From 759e011e67792898799fb54340ba5bad944274a1 Mon Sep 17 00:00:00 2001 From: John Crispin Date: Thu, 2 May 2013 14:59:01 +0200 Subject: [PATCH 127/133] mmc: MIPS: ralink: add sdhci for mt7620a SoC Signed-off-by: John Crispin --- drivers/mmc/host/Kconfig | 11 + drivers/mmc/host/Makefile | 1 + drivers/mmc/host/mt6575_sd.h | 1068 ++++++++++++++++++ drivers/mmc/host/sdhci-mt7620.c | 2314 +++++++++++++++++++++++++++++++++++++++ 4 files changed, 3394 insertions(+) create mode 100644 drivers/mmc/host/mt6575_sd.h create mode 100644 drivers/mmc/host/sdhci-mt7620.c --- a/drivers/mmc/host/Kconfig +++ b/drivers/mmc/host/Kconfig @@ -260,6 +260,17 @@ config MMC_SDHCI_BCM2835 If unsure, say N. +config MMC_SDHCI_MT7620 + tristate "SDHCI platform support for the MT7620 SD/MMC Controller" + depends on SOC_MT7620 + depends on MMC_SDHCI_PLTFM + select MMC_SDHCI_IO_ACCESSORS + help + This selects the BCM2835 SD/MMC controller. If you have a BCM2835 + platform with SD or MMC devices, say Y or M here. + + If unsure, say N. + config MMC_OMAP tristate "TI OMAP Multimedia Card Interface support" depends on ARCH_OMAP --- a/drivers/mmc/host/Makefile +++ b/drivers/mmc/host/Makefile @@ -62,6 +62,7 @@ obj-$(CONFIG_MMC_SDHCI_TEGRA) += sdhci- obj-$(CONFIG_MMC_SDHCI_OF_ESDHC) += sdhci-of-esdhc.o obj-$(CONFIG_MMC_SDHCI_OF_HLWD) += sdhci-of-hlwd.o obj-$(CONFIG_MMC_SDHCI_BCM2835) += sdhci-bcm2835.o +obj-$(CONFIG_MMC_SDHCI_MT7620) += sdhci-mt7620.o ifeq ($(CONFIG_CB710_DEBUG),y) CFLAGS-cb710-mmc += -DDEBUG --- /dev/null +++ b/drivers/mmc/host/mt6575_sd.h @@ -0,0 +1,1068 @@ +/* Copyright Statement: + * + * This software/firmware and related documentation ("MediaTek Software") are + * protected under relevant copyright laws. The information contained herein + * is confidential and proprietary to MediaTek Inc. and/or its licensors. + * Without the prior written permission of MediaTek inc. and/or its licensors, + * any reproduction, modification, use or disclosure of MediaTek Software, + * and information contained herein, in whole or in part, shall be strictly prohibited. + */ +/* MediaTek Inc. (C) 2010. All rights reserved. + * + * BY OPENING THIS FILE, RECEIVER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES + * THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE") + * RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO RECEIVER ON + * AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT. + * NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE + * SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR + * SUPPLIED WITH THE MEDIATEK SOFTWARE, AND RECEIVER AGREES TO LOOK ONLY TO SUCH + * THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. RECEIVER EXPRESSLY ACKNOWLEDGES + * THAT IT IS RECEIVER'S SOLE RESPONSIBILITY TO OBTAIN FROM ANY THIRD PARTY ALL PROPER LICENSES + * CONTAINED IN MEDIATEK SOFTWARE. MEDIATEK SHALL ALSO NOT BE RESPONSIBLE FOR ANY MEDIATEK + * SOFTWARE RELEASES MADE TO RECEIVER'S SPECIFICATION OR TO CONFORM TO A PARTICULAR + * STANDARD OR OPEN FORUM. RECEIVER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND + * CUMULATIVE LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE, + * AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE, + * OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY RECEIVER TO + * MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE. + * + * The following software/firmware and/or related documentation ("MediaTek Software") + * have been modified by MediaTek Inc. All revisions are subject to any receiver's + * applicable license agreements with MediaTek Inc. + */ + +#ifndef MT6575_SD_H +#define MT6575_SD_H + +#include +#include + +// #include /* --- by chhung */ + +typedef void (*sdio_irq_handler_t)(void*); /* external irq handler */ +typedef void (*pm_callback_t)(pm_message_t state, void *data); + +#define MSDC_CD_PIN_EN (1 << 0) /* card detection pin is wired */ +#define MSDC_WP_PIN_EN (1 << 1) /* write protection pin is wired */ +#define MSDC_RST_PIN_EN (1 << 2) /* emmc reset pin is wired */ +#define MSDC_SDIO_IRQ (1 << 3) /* use internal sdio irq (bus) */ +#define MSDC_EXT_SDIO_IRQ (1 << 4) /* use external sdio irq */ +#define MSDC_REMOVABLE (1 << 5) /* removable slot */ +#define MSDC_SYS_SUSPEND (1 << 6) /* suspended by system */ +#define MSDC_HIGHSPEED (1 << 7) /* high-speed mode support */ +#define MSDC_UHS1 (1 << 8) /* uhs-1 mode support */ +#define MSDC_DDR (1 << 9) /* ddr mode support */ +#define MSDC_SPE (1 << 10) /* special support */ +#define MSDC_INTERNAL_CLK (1 << 11) /* Force Internal clock */ +#define MSDC_TABDRV (1 << 12) /* TABLET */ + + +#define MSDC_SMPL_RISING (0) +#define MSDC_SMPL_FALLING (1) + +#define MSDC_CMD_PIN (0) +#define MSDC_DAT_PIN (1) +#define MSDC_CD_PIN (2) +#define MSDC_WP_PIN (3) +#define MSDC_RST_PIN (4) + +enum { + MSDC_CLKSRC_26MHZ = 0, + MSDC_CLKSRC_197MHZ = 1, + MSDC_CLKSRC_208MHZ = 2 +}; + +struct msdc_hw { + unsigned char clk_src; /* host clock source */ + unsigned char cmd_edge; /* command latch edge */ + unsigned char data_edge; /* data latch edge */ + unsigned char clk_drv; /* clock pad driving */ + unsigned char cmd_drv; /* command pad driving */ + unsigned char dat_drv; /* data pad driving */ + unsigned long flags; /* hardware capability flags */ + unsigned long data_pins; /* data pins */ + unsigned long data_offset; /* data address offset */ + + /* config gpio pull mode */ + void (*config_gpio_pin)(int type, int pull); + + /* external power control for card */ + void (*ext_power_on)(void); + void (*ext_power_off)(void); + + /* external sdio irq operations */ + void (*request_sdio_eirq)(sdio_irq_handler_t sdio_irq_handler, void *data); + void (*enable_sdio_eirq)(void); + void (*disable_sdio_eirq)(void); + + /* external cd irq operations */ + void (*request_cd_eirq)(sdio_irq_handler_t cd_irq_handler, void *data); + void (*enable_cd_eirq)(void); + void (*disable_cd_eirq)(void); + int (*get_cd_status)(void); + + /* power management callback for external module */ + void (*register_pm)(pm_callback_t pm_cb, void *data); +}; + +extern struct msdc_hw msdc0_hw; +extern struct msdc_hw msdc1_hw; +extern struct msdc_hw msdc2_hw; +extern struct msdc_hw msdc3_hw; + + +/*--------------------------------------------------------------------------*/ +/* Common Macro */ +/*--------------------------------------------------------------------------*/ +#define REG_ADDR(x) ((volatile u32*)(base + OFFSET_##x)) + +/*--------------------------------------------------------------------------*/ +/* Common Definition */ +/*--------------------------------------------------------------------------*/ +#define MSDC_FIFO_SZ (128) +#define MSDC_FIFO_THD (64) // (128) +#define MSDC_NUM (4) + +#define MSDC_MS (0) +#define MSDC_SDMMC (1) + +#define MSDC_MODE_UNKNOWN (0) +#define MSDC_MODE_PIO (1) +#define MSDC_MODE_DMA_BASIC (2) +#define MSDC_MODE_DMA_DESC (3) +#define MSDC_MODE_DMA_ENHANCED (4) +#define MSDC_MODE_MMC_STREAM (5) + +#define MSDC_BUS_1BITS (0) +#define MSDC_BUS_4BITS (1) +#define MSDC_BUS_8BITS (2) + +#define MSDC_BRUST_8B (3) +#define MSDC_BRUST_16B (4) +#define MSDC_BRUST_32B (5) +#define MSDC_BRUST_64B (6) + +#define MSDC_PIN_PULL_NONE (0) +#define MSDC_PIN_PULL_DOWN (1) +#define MSDC_PIN_PULL_UP (2) +#define MSDC_PIN_KEEP (3) + +#define MSDC_MAX_SCLK (48000000) /* +/- by chhung */ +#define MSDC_MIN_SCLK (260000) + +#define MSDC_AUTOCMD12 (0x0001) +#define MSDC_AUTOCMD23 (0x0002) +#define MSDC_AUTOCMD19 (0x0003) + +#define MSDC_EMMC_BOOTMODE0 (0) /* Pull low CMD mode */ +#define MSDC_EMMC_BOOTMODE1 (1) /* Reset CMD mode */ + +enum { + RESP_NONE = 0, + RESP_R1, + RESP_R2, + RESP_R3, + RESP_R4, + RESP_R5, + RESP_R6, + RESP_R7, + RESP_R1B +}; + +/*--------------------------------------------------------------------------*/ +/* Register Offset */ +/*--------------------------------------------------------------------------*/ +#define OFFSET_MSDC_CFG (0x0) +#define OFFSET_MSDC_IOCON (0x04) +#define OFFSET_MSDC_PS (0x08) +#define OFFSET_MSDC_INT (0x0c) +#define OFFSET_MSDC_INTEN (0x10) +#define OFFSET_MSDC_FIFOCS (0x14) +#define OFFSET_MSDC_TXDATA (0x18) +#define OFFSET_MSDC_RXDATA (0x1c) +#define OFFSET_SDC_CFG (0x30) +#define OFFSET_SDC_CMD (0x34) +#define OFFSET_SDC_ARG (0x38) +#define OFFSET_SDC_STS (0x3c) +#define OFFSET_SDC_RESP0 (0x40) +#define OFFSET_SDC_RESP1 (0x44) +#define OFFSET_SDC_RESP2 (0x48) +#define OFFSET_SDC_RESP3 (0x4c) +#define OFFSET_SDC_BLK_NUM (0x50) +#define OFFSET_SDC_CSTS (0x58) +#define OFFSET_SDC_CSTS_EN (0x5c) +#define OFFSET_SDC_DCRC_STS (0x60) +#define OFFSET_EMMC_CFG0 (0x70) +#define OFFSET_EMMC_CFG1 (0x74) +#define OFFSET_EMMC_STS (0x78) +#define OFFSET_EMMC_IOCON (0x7c) +#define OFFSET_SDC_ACMD_RESP (0x80) +#define OFFSET_SDC_ACMD19_TRG (0x84) +#define OFFSET_SDC_ACMD19_STS (0x88) +#define OFFSET_MSDC_DMA_SA (0x90) +#define OFFSET_MSDC_DMA_CA (0x94) +#define OFFSET_MSDC_DMA_CTRL (0x98) +#define OFFSET_MSDC_DMA_CFG (0x9c) +#define OFFSET_MSDC_DBG_SEL (0xa0) +#define OFFSET_MSDC_DBG_OUT (0xa4) +#define OFFSET_MSDC_PATCH_BIT (0xb0) +#define OFFSET_MSDC_PATCH_BIT1 (0xb4) +#define OFFSET_MSDC_PAD_CTL0 (0xe0) +#define OFFSET_MSDC_PAD_CTL1 (0xe4) +#define OFFSET_MSDC_PAD_CTL2 (0xe8) +#define OFFSET_MSDC_PAD_TUNE (0xec) +#define OFFSET_MSDC_DAT_RDDLY0 (0xf0) +#define OFFSET_MSDC_DAT_RDDLY1 (0xf4) +#define OFFSET_MSDC_HW_DBG (0xf8) +#define OFFSET_MSDC_VERSION (0x100) +#define OFFSET_MSDC_ECO_VER (0x104) + +/*--------------------------------------------------------------------------*/ +/* Register Address */ +/*--------------------------------------------------------------------------*/ + +/* common register */ +#define MSDC_CFG REG_ADDR(MSDC_CFG) +#define MSDC_IOCON REG_ADDR(MSDC_IOCON) +#define MSDC_PS REG_ADDR(MSDC_PS) +#define MSDC_INT REG_ADDR(MSDC_INT) +#define MSDC_INTEN REG_ADDR(MSDC_INTEN) +#define MSDC_FIFOCS REG_ADDR(MSDC_FIFOCS) +#define MSDC_TXDATA REG_ADDR(MSDC_TXDATA) +#define MSDC_RXDATA REG_ADDR(MSDC_RXDATA) +#define MSDC_PATCH_BIT0 REG_ADDR(MSDC_PATCH_BIT) + +/* sdmmc register */ +#define SDC_CFG REG_ADDR(SDC_CFG) +#define SDC_CMD REG_ADDR(SDC_CMD) +#define SDC_ARG REG_ADDR(SDC_ARG) +#define SDC_STS REG_ADDR(SDC_STS) +#define SDC_RESP0 REG_ADDR(SDC_RESP0) +#define SDC_RESP1 REG_ADDR(SDC_RESP1) +#define SDC_RESP2 REG_ADDR(SDC_RESP2) +#define SDC_RESP3 REG_ADDR(SDC_RESP3) +#define SDC_BLK_NUM REG_ADDR(SDC_BLK_NUM) +#define SDC_CSTS REG_ADDR(SDC_CSTS) +#define SDC_CSTS_EN REG_ADDR(SDC_CSTS_EN) +#define SDC_DCRC_STS REG_ADDR(SDC_DCRC_STS) + +/* emmc register*/ +#define EMMC_CFG0 REG_ADDR(EMMC_CFG0) +#define EMMC_CFG1 REG_ADDR(EMMC_CFG1) +#define EMMC_STS REG_ADDR(EMMC_STS) +#define EMMC_IOCON REG_ADDR(EMMC_IOCON) + +/* auto command register */ +#define SDC_ACMD_RESP REG_ADDR(SDC_ACMD_RESP) +#define SDC_ACMD19_TRG REG_ADDR(SDC_ACMD19_TRG) +#define SDC_ACMD19_STS REG_ADDR(SDC_ACMD19_STS) + +/* dma register */ +#define MSDC_DMA_SA REG_ADDR(MSDC_DMA_SA) +#define MSDC_DMA_CA REG_ADDR(MSDC_DMA_CA) +#define MSDC_DMA_CTRL REG_ADDR(MSDC_DMA_CTRL) +#define MSDC_DMA_CFG REG_ADDR(MSDC_DMA_CFG) + +/* pad ctrl register */ +#define MSDC_PAD_CTL0 REG_ADDR(MSDC_PAD_CTL0) +#define MSDC_PAD_CTL1 REG_ADDR(MSDC_PAD_CTL1) +#define MSDC_PAD_CTL2 REG_ADDR(MSDC_PAD_CTL2) + +/* data read delay */ +#define MSDC_DAT_RDDLY0 REG_ADDR(MSDC_DAT_RDDLY0) +#define MSDC_DAT_RDDLY1 REG_ADDR(MSDC_DAT_RDDLY1) + +/* debug register */ +#define MSDC_DBG_SEL REG_ADDR(MSDC_DBG_SEL) +#define MSDC_DBG_OUT REG_ADDR(MSDC_DBG_OUT) + +/* misc register */ +#define MSDC_PATCH_BIT REG_ADDR(MSDC_PATCH_BIT) +#define MSDC_PATCH_BIT1 REG_ADDR(MSDC_PATCH_BIT1) +#define MSDC_PAD_TUNE REG_ADDR(MSDC_PAD_TUNE) +#define MSDC_HW_DBG REG_ADDR(MSDC_HW_DBG) +#define MSDC_VERSION REG_ADDR(MSDC_VERSION) +#define MSDC_ECO_VER REG_ADDR(MSDC_ECO_VER) /* ECO Version */ + +/*--------------------------------------------------------------------------*/ +/* Register Mask */ +/*--------------------------------------------------------------------------*/ + +/* MSDC_CFG mask */ +#define MSDC_CFG_MODE (0x1 << 0) /* RW */ +#define MSDC_CFG_CKPDN (0x1 << 1) /* RW */ +#define MSDC_CFG_RST (0x1 << 2) /* RW */ +#define MSDC_CFG_PIO (0x1 << 3) /* RW */ +#define MSDC_CFG_CKDRVEN (0x1 << 4) /* RW */ +#define MSDC_CFG_BV18SDT (0x1 << 5) /* RW */ +#define MSDC_CFG_BV18PSS (0x1 << 6) /* R */ +#define MSDC_CFG_CKSTB (0x1 << 7) /* R */ +#define MSDC_CFG_CKDIV (0xff << 8) /* RW */ +#define MSDC_CFG_CKMOD (0x3 << 16) /* RW */ + +/* MSDC_IOCON mask */ +#define MSDC_IOCON_SDR104CKS (0x1 << 0) /* RW */ +#define MSDC_IOCON_RSPL (0x1 << 1) /* RW */ +#define MSDC_IOCON_DSPL (0x1 << 2) /* RW */ +#define MSDC_IOCON_DDLSEL (0x1 << 3) /* RW */ +#define MSDC_IOCON_DDR50CKD (0x1 << 4) /* RW */ +#define MSDC_IOCON_DSPLSEL (0x1 << 5) /* RW */ +#define MSDC_IOCON_D0SPL (0x1 << 16) /* RW */ +#define MSDC_IOCON_D1SPL (0x1 << 17) /* RW */ +#define MSDC_IOCON_D2SPL (0x1 << 18) /* RW */ +#define MSDC_IOCON_D3SPL (0x1 << 19) /* RW */ +#define MSDC_IOCON_D4SPL (0x1 << 20) /* RW */ +#define MSDC_IOCON_D5SPL (0x1 << 21) /* RW */ +#define MSDC_IOCON_D6SPL (0x1 << 22) /* RW */ +#define MSDC_IOCON_D7SPL (0x1 << 23) /* RW */ +#define MSDC_IOCON_RISCSZ (0x3 << 24) /* RW */ + +/* MSDC_PS mask */ +#define MSDC_PS_CDEN (0x1 << 0) /* RW */ +#define MSDC_PS_CDSTS (0x1 << 1) /* R */ +#define MSDC_PS_CDDEBOUNCE (0xf << 12) /* RW */ +#define MSDC_PS_DAT (0xff << 16) /* R */ +#define MSDC_PS_CMD (0x1 << 24) /* R */ +#define MSDC_PS_WP (0x1UL<< 31) /* R */ + +/* MSDC_INT mask */ +#define MSDC_INT_MMCIRQ (0x1 << 0) /* W1C */ +#define MSDC_INT_CDSC (0x1 << 1) /* W1C */ +#define MSDC_INT_ACMDRDY (0x1 << 3) /* W1C */ +#define MSDC_INT_ACMDTMO (0x1 << 4) /* W1C */ +#define MSDC_INT_ACMDCRCERR (0x1 << 5) /* W1C */ +#define MSDC_INT_DMAQ_EMPTY (0x1 << 6) /* W1C */ +#define MSDC_INT_SDIOIRQ (0x1 << 7) /* W1C */ +#define MSDC_INT_CMDRDY (0x1 << 8) /* W1C */ +#define MSDC_INT_CMDTMO (0x1 << 9) /* W1C */ +#define MSDC_INT_RSPCRCERR (0x1 << 10) /* W1C */ +#define MSDC_INT_CSTA (0x1 << 11) /* R */ +#define MSDC_INT_XFER_COMPL (0x1 << 12) /* W1C */ +#define MSDC_INT_DXFER_DONE (0x1 << 13) /* W1C */ +#define MSDC_INT_DATTMO (0x1 << 14) /* W1C */ +#define MSDC_INT_DATCRCERR (0x1 << 15) /* W1C */ +#define MSDC_INT_ACMD19_DONE (0x1 << 16) /* W1C */ + +/* MSDC_INTEN mask */ +#define MSDC_INTEN_MMCIRQ (0x1 << 0) /* RW */ +#define MSDC_INTEN_CDSC (0x1 << 1) /* RW */ +#define MSDC_INTEN_ACMDRDY (0x1 << 3) /* RW */ +#define MSDC_INTEN_ACMDTMO (0x1 << 4) /* RW */ +#define MSDC_INTEN_ACMDCRCERR (0x1 << 5) /* RW */ +#define MSDC_INTEN_DMAQ_EMPTY (0x1 << 6) /* RW */ +#define MSDC_INTEN_SDIOIRQ (0x1 << 7) /* RW */ +#define MSDC_INTEN_CMDRDY (0x1 << 8) /* RW */ +#define MSDC_INTEN_CMDTMO (0x1 << 9) /* RW */ +#define MSDC_INTEN_RSPCRCERR (0x1 << 10) /* RW */ +#define MSDC_INTEN_CSTA (0x1 << 11) /* RW */ +#define MSDC_INTEN_XFER_COMPL (0x1 << 12) /* RW */ +#define MSDC_INTEN_DXFER_DONE (0x1 << 13) /* RW */ +#define MSDC_INTEN_DATTMO (0x1 << 14) /* RW */ +#define MSDC_INTEN_DATCRCERR (0x1 << 15) /* RW */ +#define MSDC_INTEN_ACMD19_DONE (0x1 << 16) /* RW */ + +/* MSDC_FIFOCS mask */ +#define MSDC_FIFOCS_RXCNT (0xff << 0) /* R */ +#define MSDC_FIFOCS_TXCNT (0xff << 16) /* R */ +#define MSDC_FIFOCS_CLR (0x1UL<< 31) /* RW */ + +/* SDC_CFG mask */ +#define SDC_CFG_SDIOINTWKUP (0x1 << 0) /* RW */ +#define SDC_CFG_INSWKUP (0x1 << 1) /* RW */ +#define SDC_CFG_BUSWIDTH (0x3 << 16) /* RW */ +#define SDC_CFG_SDIO (0x1 << 19) /* RW */ +#define SDC_CFG_SDIOIDE (0x1 << 20) /* RW */ +#define SDC_CFG_INTATGAP (0x1 << 21) /* RW */ +#define SDC_CFG_DTOC (0xffUL << 24) /* RW */ + +/* SDC_CMD mask */ +#define SDC_CMD_OPC (0x3f << 0) /* RW */ +#define SDC_CMD_BRK (0x1 << 6) /* RW */ +#define SDC_CMD_RSPTYP (0x7 << 7) /* RW */ +#define SDC_CMD_DTYP (0x3 << 11) /* RW */ +#define SDC_CMD_DTYP (0x3 << 11) /* RW */ +#define SDC_CMD_RW (0x1 << 13) /* RW */ +#define SDC_CMD_STOP (0x1 << 14) /* RW */ +#define SDC_CMD_GOIRQ (0x1 << 15) /* RW */ +#define SDC_CMD_BLKLEN (0xfff<< 16) /* RW */ +#define SDC_CMD_AUTOCMD (0x3 << 28) /* RW */ +#define SDC_CMD_VOLSWTH (0x1 << 30) /* RW */ + +/* SDC_STS mask */ +#define SDC_STS_SDCBUSY (0x1 << 0) /* RW */ +#define SDC_STS_CMDBUSY (0x1 << 1) /* RW */ +#define SDC_STS_SWR_COMPL (0x1 << 31) /* RW */ + +/* SDC_DCRC_STS mask */ +#define SDC_DCRC_STS_NEG (0xf << 8) /* RO */ +#define SDC_DCRC_STS_POS (0xff << 0) /* RO */ + +/* EMMC_CFG0 mask */ +#define EMMC_CFG0_BOOTSTART (0x1 << 0) /* W */ +#define EMMC_CFG0_BOOTSTOP (0x1 << 1) /* W */ +#define EMMC_CFG0_BOOTMODE (0x1 << 2) /* RW */ +#define EMMC_CFG0_BOOTACKDIS (0x1 << 3) /* RW */ +#define EMMC_CFG0_BOOTWDLY (0x7 << 12) /* RW */ +#define EMMC_CFG0_BOOTSUPP (0x1 << 15) /* RW */ + +/* EMMC_CFG1 mask */ +#define EMMC_CFG1_BOOTDATTMC (0xfffff << 0) /* RW */ +#define EMMC_CFG1_BOOTACKTMC (0xfffUL << 20) /* RW */ + +/* EMMC_STS mask */ +#define EMMC_STS_BOOTCRCERR (0x1 << 0) /* W1C */ +#define EMMC_STS_BOOTACKERR (0x1 << 1) /* W1C */ +#define EMMC_STS_BOOTDATTMO (0x1 << 2) /* W1C */ +#define EMMC_STS_BOOTACKTMO (0x1 << 3) /* W1C */ +#define EMMC_STS_BOOTUPSTATE (0x1 << 4) /* R */ +#define EMMC_STS_BOOTACKRCV (0x1 << 5) /* W1C */ +#define EMMC_STS_BOOTDATRCV (0x1 << 6) /* R */ + +/* EMMC_IOCON mask */ +#define EMMC_IOCON_BOOTRST (0x1 << 0) /* RW */ + +/* SDC_ACMD19_TRG mask */ +#define SDC_ACMD19_TRG_TUNESEL (0xf << 0) /* RW */ + +/* MSDC_DMA_CTRL mask */ +#define MSDC_DMA_CTRL_START (0x1 << 0) /* W */ +#define MSDC_DMA_CTRL_STOP (0x1 << 1) /* W */ +#define MSDC_DMA_CTRL_RESUME (0x1 << 2) /* W */ +#define MSDC_DMA_CTRL_MODE (0x1 << 8) /* RW */ +#define MSDC_DMA_CTRL_LASTBUF (0x1 << 10) /* RW */ +#define MSDC_DMA_CTRL_BRUSTSZ (0x7 << 12) /* RW */ +#define MSDC_DMA_CTRL_XFERSZ (0xffffUL << 16)/* RW */ + +/* MSDC_DMA_CFG mask */ +#define MSDC_DMA_CFG_STS (0x1 << 0) /* R */ +#define MSDC_DMA_CFG_DECSEN (0x1 << 1) /* RW */ +#define MSDC_DMA_CFG_BDCSERR (0x1 << 4) /* R */ +#define MSDC_DMA_CFG_GPDCSERR (0x1 << 5) /* R */ + +/* MSDC_PATCH_BIT mask */ +#define MSDC_PATCH_BIT_WFLSMODE (0x1 << 0) /* RW */ +#define MSDC_PATCH_BIT_ODDSUPP (0x1 << 1) /* RW */ +#define MSDC_PATCH_BIT_CKGEN_CK (0x1 << 6) /* E2: Fixed to 1 */ +#define MSDC_PATCH_BIT_IODSSEL (0x1 << 16) /* RW */ +#define MSDC_PATCH_BIT_IOINTSEL (0x1 << 17) /* RW */ +#define MSDC_PATCH_BIT_BUSYDLY (0xf << 18) /* RW */ +#define MSDC_PATCH_BIT_WDOD (0xf << 22) /* RW */ +#define MSDC_PATCH_BIT_IDRTSEL (0x1 << 26) /* RW */ +#define MSDC_PATCH_BIT_CMDFSEL (0x1 << 27) /* RW */ +#define MSDC_PATCH_BIT_INTDLSEL (0x1 << 28) /* RW */ +#define MSDC_PATCH_BIT_SPCPUSH (0x1 << 29) /* RW */ +#define MSDC_PATCH_BIT_DECRCTMO (0x1 << 30) /* RW */ + +/* MSDC_PATCH_BIT1 mask */ +#define MSDC_PATCH_BIT1_WRDAT_CRCS (0x7 << 3) +#define MSDC_PATCH_BIT1_CMD_RSP (0x7 << 0) + +/* MSDC_PAD_CTL0 mask */ +#define MSDC_PAD_CTL0_CLKDRVN (0x7 << 0) /* RW */ +#define MSDC_PAD_CTL0_CLKDRVP (0x7 << 4) /* RW */ +#define MSDC_PAD_CTL0_CLKSR (0x1 << 8) /* RW */ +#define MSDC_PAD_CTL0_CLKPD (0x1 << 16) /* RW */ +#define MSDC_PAD_CTL0_CLKPU (0x1 << 17) /* RW */ +#define MSDC_PAD_CTL0_CLKSMT (0x1 << 18) /* RW */ +#define MSDC_PAD_CTL0_CLKIES (0x1 << 19) /* RW */ +#define MSDC_PAD_CTL0_CLKTDSEL (0xf << 20) /* RW */ +#define MSDC_PAD_CTL0_CLKRDSEL (0xffUL<< 24) /* RW */ + +/* MSDC_PAD_CTL1 mask */ +#define MSDC_PAD_CTL1_CMDDRVN (0x7 << 0) /* RW */ +#define MSDC_PAD_CTL1_CMDDRVP (0x7 << 4) /* RW */ +#define MSDC_PAD_CTL1_CMDSR (0x1 << 8) /* RW */ +#define MSDC_PAD_CTL1_CMDPD (0x1 << 16) /* RW */ +#define MSDC_PAD_CTL1_CMDPU (0x1 << 17) /* RW */ +#define MSDC_PAD_CTL1_CMDSMT (0x1 << 18) /* RW */ +#define MSDC_PAD_CTL1_CMDIES (0x1 << 19) /* RW */ +#define MSDC_PAD_CTL1_CMDTDSEL (0xf << 20) /* RW */ +#define MSDC_PAD_CTL1_CMDRDSEL (0xffUL<< 24) /* RW */ + +/* MSDC_PAD_CTL2 mask */ +#define MSDC_PAD_CTL2_DATDRVN (0x7 << 0) /* RW */ +#define MSDC_PAD_CTL2_DATDRVP (0x7 << 4) /* RW */ +#define MSDC_PAD_CTL2_DATSR (0x1 << 8) /* RW */ +#define MSDC_PAD_CTL2_DATPD (0x1 << 16) /* RW */ +#define MSDC_PAD_CTL2_DATPU (0x1 << 17) /* RW */ +#define MSDC_PAD_CTL2_DATIES (0x1 << 19) /* RW */ +#define MSDC_PAD_CTL2_DATSMT (0x1 << 18) /* RW */ +#define MSDC_PAD_CTL2_DATTDSEL (0xf << 20) /* RW */ +#define MSDC_PAD_CTL2_DATRDSEL (0xffUL<< 24) /* RW */ + +/* MSDC_PAD_TUNE mask */ +#define MSDC_PAD_TUNE_DATWRDLY (0x1F << 0) /* RW */ +#define MSDC_PAD_TUNE_DATRRDLY (0x1F << 8) /* RW */ +#define MSDC_PAD_TUNE_CMDRDLY (0x1F << 16) /* RW */ +#define MSDC_PAD_TUNE_CMDRRDLY (0x1FUL << 22) /* RW */ +#define MSDC_PAD_TUNE_CLKTXDLY (0x1FUL << 27) /* RW */ + +/* MSDC_DAT_RDDLY0/1 mask */ +#define MSDC_DAT_RDDLY0_D0 (0x1F << 0) /* RW */ +#define MSDC_DAT_RDDLY0_D1 (0x1F << 8) /* RW */ +#define MSDC_DAT_RDDLY0_D2 (0x1F << 16) /* RW */ +#define MSDC_DAT_RDDLY0_D3 (0x1F << 24) /* RW */ + +#define MSDC_DAT_RDDLY1_D4 (0x1F << 0) /* RW */ +#define MSDC_DAT_RDDLY1_D5 (0x1F << 8) /* RW */ +#define MSDC_DAT_RDDLY1_D6 (0x1F << 16) /* RW */ +#define MSDC_DAT_RDDLY1_D7 (0x1F << 24) /* RW */ + +#define MSDC_CKGEN_MSDC_DLY_SEL (0x1F<<10) +#define MSDC_INT_DAT_LATCH_CK_SEL (0x7<<7) +#define MSDC_CKGEN_MSDC_CK_SEL (0x1<<6) +#define CARD_READY_FOR_DATA (1<<8) +#define CARD_CURRENT_STATE(x) ((x&0x00001E00)>>9) + +/*--------------------------------------------------------------------------*/ +/* Descriptor Structure */ +/*--------------------------------------------------------------------------*/ +typedef struct { + u32 hwo:1; /* could be changed by hw */ + u32 bdp:1; + u32 rsv0:6; + u32 chksum:8; + u32 intr:1; + u32 rsv1:15; + void *next; + void *ptr; + u32 buflen:16; + u32 extlen:8; + u32 rsv2:8; + u32 arg; + u32 blknum; + u32 cmd; +} gpd_t; + +typedef struct { + u32 eol:1; + u32 rsv0:7; + u32 chksum:8; + u32 rsv1:1; + u32 blkpad:1; + u32 dwpad:1; + u32 rsv2:13; + void *next; + void *ptr; + u32 buflen:16; + u32 rsv3:16; +} bd_t; + +/*--------------------------------------------------------------------------*/ +/* Register Debugging Structure */ +/*--------------------------------------------------------------------------*/ + +typedef struct { + u32 msdc:1; + u32 ckpwn:1; + u32 rst:1; + u32 pio:1; + u32 ckdrven:1; + u32 start18v:1; + u32 pass18v:1; + u32 ckstb:1; + u32 ckdiv:8; + u32 ckmod:2; + u32 pad:14; +} msdc_cfg_reg; +typedef struct { + u32 sdr104cksel:1; + u32 rsmpl:1; + u32 dsmpl:1; + u32 ddlysel:1; + u32 ddr50ckd:1; + u32 dsplsel:1; + u32 pad1:10; + u32 d0spl:1; + u32 d1spl:1; + u32 d2spl:1; + u32 d3spl:1; + u32 d4spl:1; + u32 d5spl:1; + u32 d6spl:1; + u32 d7spl:1; + u32 riscsz:1; + u32 pad2:7; +} msdc_iocon_reg; +typedef struct { + u32 cden:1; + u32 cdsts:1; + u32 pad1:10; + u32 cddebounce:4; + u32 dat:8; + u32 cmd:1; + u32 pad2:6; + u32 wp:1; +} msdc_ps_reg; +typedef struct { + u32 mmcirq:1; + u32 cdsc:1; + u32 pad1:1; + u32 atocmdrdy:1; + u32 atocmdtmo:1; + u32 atocmdcrc:1; + u32 dmaqempty:1; + u32 sdioirq:1; + u32 cmdrdy:1; + u32 cmdtmo:1; + u32 rspcrc:1; + u32 csta:1; + u32 xfercomp:1; + u32 dxferdone:1; + u32 dattmo:1; + u32 datcrc:1; + u32 atocmd19done:1; + u32 pad2:15; +} msdc_int_reg; +typedef struct { + u32 mmcirq:1; + u32 cdsc:1; + u32 pad1:1; + u32 atocmdrdy:1; + u32 atocmdtmo:1; + u32 atocmdcrc:1; + u32 dmaqempty:1; + u32 sdioirq:1; + u32 cmdrdy:1; + u32 cmdtmo:1; + u32 rspcrc:1; + u32 csta:1; + u32 xfercomp:1; + u32 dxferdone:1; + u32 dattmo:1; + u32 datcrc:1; + u32 atocmd19done:1; + u32 pad2:15; +} msdc_inten_reg; +typedef struct { + u32 rxcnt:8; + u32 pad1:8; + u32 txcnt:8; + u32 pad2:7; + u32 clr:1; +} msdc_fifocs_reg; +typedef struct { + u32 val; +} msdc_txdat_reg; +typedef struct { + u32 val; +} msdc_rxdat_reg; +typedef struct { + u32 sdiowkup:1; + u32 inswkup:1; + u32 pad1:14; + u32 buswidth:2; + u32 pad2:1; + u32 sdio:1; + u32 sdioide:1; + u32 intblkgap:1; + u32 pad4:2; + u32 dtoc:8; +} sdc_cfg_reg; +typedef struct { + u32 cmd:6; + u32 brk:1; + u32 rsptyp:3; + u32 pad1:1; + u32 dtype:2; + u32 rw:1; + u32 stop:1; + u32 goirq:1; + u32 blklen:12; + u32 atocmd:2; + u32 volswth:1; + u32 pad2:1; +} sdc_cmd_reg; +typedef struct { + u32 arg; +} sdc_arg_reg; +typedef struct { + u32 sdcbusy:1; + u32 cmdbusy:1; + u32 pad:29; + u32 swrcmpl:1; +} sdc_sts_reg; +typedef struct { + u32 val; +} sdc_resp0_reg; +typedef struct { + u32 val; +} sdc_resp1_reg; +typedef struct { + u32 val; +} sdc_resp2_reg; +typedef struct { + u32 val; +} sdc_resp3_reg; +typedef struct { + u32 num; +} sdc_blknum_reg; +typedef struct { + u32 sts; +} sdc_csts_reg; +typedef struct { + u32 sts; +} sdc_cstsen_reg; +typedef struct { + u32 datcrcsts:8; + u32 ddrcrcsts:4; + u32 pad:20; +} sdc_datcrcsts_reg; +typedef struct { + u32 bootstart:1; + u32 bootstop:1; + u32 bootmode:1; + u32 pad1:9; + u32 bootwaidly:3; + u32 bootsupp:1; + u32 pad2:16; +} emmc_cfg0_reg; +typedef struct { + u32 bootcrctmc:16; + u32 pad:4; + u32 bootacktmc:12; +} emmc_cfg1_reg; +typedef struct { + u32 bootcrcerr:1; + u32 bootackerr:1; + u32 bootdattmo:1; + u32 bootacktmo:1; + u32 bootupstate:1; + u32 bootackrcv:1; + u32 bootdatrcv:1; + u32 pad:25; +} emmc_sts_reg; +typedef struct { + u32 bootrst:1; + u32 pad:31; +} emmc_iocon_reg; +typedef struct { + u32 val; +} msdc_acmd_resp_reg; +typedef struct { + u32 tunesel:4; + u32 pad:28; +} msdc_acmd19_trg_reg; +typedef struct { + u32 val; +} msdc_acmd19_sts_reg; +typedef struct { + u32 addr; +} msdc_dma_sa_reg; +typedef struct { + u32 addr; +} msdc_dma_ca_reg; +typedef struct { + u32 start:1; + u32 stop:1; + u32 resume:1; + u32 pad1:5; + u32 mode:1; + u32 pad2:1; + u32 lastbuf:1; + u32 pad3:1; + u32 brustsz:3; + u32 pad4:1; + u32 xfersz:16; +} msdc_dma_ctrl_reg; +typedef struct { + u32 status:1; + u32 decsen:1; + u32 pad1:2; + u32 bdcsen:1; + u32 gpdcsen:1; + u32 pad2:26; +} msdc_dma_cfg_reg; +typedef struct { + u32 sel:16; + u32 pad2:16; +} msdc_dbg_sel_reg; +typedef struct { + u32 val; +} msdc_dbg_out_reg; +typedef struct { + u32 clkdrvn:3; + u32 rsv0:1; + u32 clkdrvp:3; + u32 rsv1:1; + u32 clksr:1; + u32 rsv2:7; + u32 clkpd:1; + u32 clkpu:1; + u32 clksmt:1; + u32 clkies:1; + u32 clktdsel:4; + u32 clkrdsel:8; +} msdc_pad_ctl0_reg; +typedef struct { + u32 cmddrvn:3; + u32 rsv0:1; + u32 cmddrvp:3; + u32 rsv1:1; + u32 cmdsr:1; + u32 rsv2:7; + u32 cmdpd:1; + u32 cmdpu:1; + u32 cmdsmt:1; + u32 cmdies:1; + u32 cmdtdsel:4; + u32 cmdrdsel:8; +} msdc_pad_ctl1_reg; +typedef struct { + u32 datdrvn:3; + u32 rsv0:1; + u32 datdrvp:3; + u32 rsv1:1; + u32 datsr:1; + u32 rsv2:7; + u32 datpd:1; + u32 datpu:1; + u32 datsmt:1; + u32 daties:1; + u32 dattdsel:4; + u32 datrdsel:8; +} msdc_pad_ctl2_reg; +typedef struct { + u32 wrrxdly:3; + u32 pad1:5; + u32 rdrxdly:8; + u32 pad2:16; +} msdc_pad_tune_reg; +typedef struct { + u32 dat0:5; + u32 rsv0:3; + u32 dat1:5; + u32 rsv1:3; + u32 dat2:5; + u32 rsv2:3; + u32 dat3:5; + u32 rsv3:3; +} msdc_dat_rddly0; +typedef struct { + u32 dat4:5; + u32 rsv4:3; + u32 dat5:5; + u32 rsv5:3; + u32 dat6:5; + u32 rsv6:3; + u32 dat7:5; + u32 rsv7:3; +} msdc_dat_rddly1; +typedef struct { + u32 dbg0sel:8; + u32 dbg1sel:6; + u32 pad1:2; + u32 dbg2sel:6; + u32 pad2:2; + u32 dbg3sel:6; + u32 pad3:2; +} msdc_hw_dbg_reg; +typedef struct { + u32 val; +} msdc_version_reg; +typedef struct { + u32 val; +} msdc_eco_ver_reg; + +struct msdc_regs { + msdc_cfg_reg msdc_cfg; /* base+0x00h */ + msdc_iocon_reg msdc_iocon; /* base+0x04h */ + msdc_ps_reg msdc_ps; /* base+0x08h */ + msdc_int_reg msdc_int; /* base+0x0ch */ + msdc_inten_reg msdc_inten; /* base+0x10h */ + msdc_fifocs_reg msdc_fifocs; /* base+0x14h */ + msdc_txdat_reg msdc_txdat; /* base+0x18h */ + msdc_rxdat_reg msdc_rxdat; /* base+0x1ch */ + u32 rsv1[4]; + sdc_cfg_reg sdc_cfg; /* base+0x30h */ + sdc_cmd_reg sdc_cmd; /* base+0x34h */ + sdc_arg_reg sdc_arg; /* base+0x38h */ + sdc_sts_reg sdc_sts; /* base+0x3ch */ + sdc_resp0_reg sdc_resp0; /* base+0x40h */ + sdc_resp1_reg sdc_resp1; /* base+0x44h */ + sdc_resp2_reg sdc_resp2; /* base+0x48h */ + sdc_resp3_reg sdc_resp3; /* base+0x4ch */ + sdc_blknum_reg sdc_blknum; /* base+0x50h */ + u32 rsv2[1]; + sdc_csts_reg sdc_csts; /* base+0x58h */ + sdc_cstsen_reg sdc_cstsen; /* base+0x5ch */ + sdc_datcrcsts_reg sdc_dcrcsta; /* base+0x60h */ + u32 rsv3[3]; + emmc_cfg0_reg emmc_cfg0; /* base+0x70h */ + emmc_cfg1_reg emmc_cfg1; /* base+0x74h */ + emmc_sts_reg emmc_sts; /* base+0x78h */ + emmc_iocon_reg emmc_iocon; /* base+0x7ch */ + msdc_acmd_resp_reg acmd_resp; /* base+0x80h */ + msdc_acmd19_trg_reg acmd19_trg; /* base+0x84h */ + msdc_acmd19_sts_reg acmd19_sts; /* base+0x88h */ + u32 rsv4[1]; + msdc_dma_sa_reg dma_sa; /* base+0x90h */ + msdc_dma_ca_reg dma_ca; /* base+0x94h */ + msdc_dma_ctrl_reg dma_ctrl; /* base+0x98h */ + msdc_dma_cfg_reg dma_cfg; /* base+0x9ch */ + msdc_dbg_sel_reg dbg_sel; /* base+0xa0h */ + msdc_dbg_out_reg dbg_out; /* base+0xa4h */ + u32 rsv5[2]; + u32 patch0; /* base+0xb0h */ + u32 patch1; /* base+0xb4h */ + u32 rsv6[10]; + msdc_pad_ctl0_reg pad_ctl0; /* base+0xe0h */ + msdc_pad_ctl1_reg pad_ctl1; /* base+0xe4h */ + msdc_pad_ctl2_reg pad_ctl2; /* base+0xe8h */ + msdc_pad_tune_reg pad_tune; /* base+0xech */ + msdc_dat_rddly0 dat_rddly0; /* base+0xf0h */ + msdc_dat_rddly1 dat_rddly1; /* base+0xf4h */ + msdc_hw_dbg_reg hw_dbg; /* base+0xf8h */ + u32 rsv7[1]; + msdc_version_reg version; /* base+0x100h */ + msdc_eco_ver_reg eco_ver; /* base+0x104h */ +}; + +struct scatterlist_ex { + u32 cmd; + u32 arg; + u32 sglen; + struct scatterlist *sg; +}; + +#define DMA_FLAG_NONE (0x00000000) +#define DMA_FLAG_EN_CHKSUM (0x00000001) +#define DMA_FLAG_PAD_BLOCK (0x00000002) +#define DMA_FLAG_PAD_DWORD (0x00000004) + +struct msdc_dma { + u32 flags; /* flags */ + u32 xfersz; /* xfer size in bytes */ + u32 sglen; /* size of scatter list */ + u32 blklen; /* block size */ + struct scatterlist *sg; /* I/O scatter list */ + struct scatterlist_ex *esg; /* extended I/O scatter list */ + u8 mode; /* dma mode */ + u8 burstsz; /* burst size */ + u8 intr; /* dma done interrupt */ + u8 padding; /* padding */ + u32 cmd; /* enhanced mode command */ + u32 arg; /* enhanced mode arg */ + u32 rsp; /* enhanced mode command response */ + u32 autorsp; /* auto command response */ + + gpd_t *gpd; /* pointer to gpd array */ + bd_t *bd; /* pointer to bd array */ + dma_addr_t gpd_addr; /* the physical address of gpd array */ + dma_addr_t bd_addr; /* the physical address of bd array */ + u32 used_gpd; /* the number of used gpd elements */ + u32 used_bd; /* the number of used bd elements */ +}; + +struct msdc_host +{ + struct msdc_hw *hw; + + struct mmc_host *mmc; /* mmc structure */ + struct mmc_command *cmd; + struct mmc_data *data; + struct mmc_request *mrq; + int cmd_rsp; + int cmd_rsp_done; + int cmd_r1b_done; + + int error; + spinlock_t lock; /* mutex */ + struct semaphore sem; + + u32 blksz; /* host block size */ + u32 base; /* host base address */ + int id; /* host id */ + int pwr_ref; /* core power reference count */ + + u32 xfer_size; /* total transferred size */ + + struct msdc_dma dma; /* dma channel */ + u32 dma_addr; /* dma transfer address */ + u32 dma_left_size; /* dma transfer left size */ + u32 dma_xfer_size; /* dma transfer size in bytes */ + int dma_xfer; /* dma transfer mode */ + + u32 timeout_ns; /* data timeout ns */ + u32 timeout_clks; /* data timeout clks */ + + atomic_t abort; /* abort transfer */ + + int irq; /* host interrupt */ + + struct tasklet_struct card_tasklet; + + struct completion cmd_done; + struct completion xfer_done; + struct pm_message pm_state; + + u32 mclk; /* mmc subsystem clock */ + u32 hclk; /* host clock speed */ + u32 sclk; /* SD/MS clock speed */ + u8 core_clkon; /* Host core clock on ? */ + u8 card_clkon; /* Card clock on ? */ + u8 core_power; /* core power */ + u8 power_mode; /* host power mode */ + u8 card_inserted; /* card inserted ? */ + u8 suspend; /* host suspended ? */ + u8 reserved; + u8 app_cmd; /* for app command */ + u32 app_cmd_arg; + u64 starttime; +}; + +static inline unsigned int uffs(unsigned int x) +{ + unsigned int r = 1; + + if (!x) + return 0; + if (!(x & 0xffff)) { + x >>= 16; + r += 16; + } + if (!(x & 0xff)) { + x >>= 8; + r += 8; + } + if (!(x & 0xf)) { + x >>= 4; + r += 4; + } + if (!(x & 3)) { + x >>= 2; + r += 2; + } + if (!(x & 1)) { + x >>= 1; + r += 1; + } + return r; +} +#define sdr_read8(reg) __raw_readb(reg) +#define sdr_read16(reg) __raw_readw(reg) +#define sdr_read32(reg) __raw_readl(reg) +#define sdr_write8(reg,val) __raw_writeb(val,reg) +#define sdr_write16(reg,val) __raw_writew(val,reg) +#define sdr_write32(reg,val) __raw_writel(val,reg) + +#define sdr_set_bits(reg,bs) ((*(volatile u32*)(reg)) |= (u32)(bs)) +#define sdr_clr_bits(reg,bs) ((*(volatile u32*)(reg)) &= ~((u32)(bs))) + +#define sdr_set_field(reg,field,val) \ + do { \ + volatile unsigned int tv = sdr_read32(reg); \ + tv &= ~(field); \ + tv |= ((val) << (uffs((unsigned int)field) - 1)); \ + sdr_write32(reg,tv); \ + } while(0) +#define sdr_get_field(reg,field,val) \ + do { \ + volatile unsigned int tv = sdr_read32(reg); \ + val = ((tv & (field)) >> (uffs((unsigned int)field) - 1)); \ + } while(0) + +#endif + --- /dev/null +++ b/drivers/mmc/host/sdhci-mt7620.c @@ -0,0 +1,2314 @@ +/* Copyright Statement: + * + * This software/firmware and related documentation ("MediaTek Software") are + * protected under relevant copyright laws. The information contained herein + * is confidential and proprietary to MediaTek Inc. and/or its licensors. + * Without the prior written permission of MediaTek inc. and/or its licensors, + * any reproduction, modification, use or disclosure of MediaTek Software, + * and information contained herein, in whole or in part, shall be strictly prohibited. + * + * MediaTek Inc. (C) 2010. All rights reserved. + * + * BY OPENING THIS FILE, RECEIVER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES + * THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE") + * RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO RECEIVER ON + * AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT. + * NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE + * SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR + * SUPPLIED WITH THE MEDIATEK SOFTWARE, AND RECEIVER AGREES TO LOOK ONLY TO SUCH + * THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. RECEIVER EXPRESSLY ACKNOWLEDGES + * THAT IT IS RECEIVER'S SOLE RESPONSIBILITY TO OBTAIN FROM ANY THIRD PARTY ALL PROPER LICENSES + * CONTAINED IN MEDIATEK SOFTWARE. MEDIATEK SHALL ALSO NOT BE RESPONSIBLE FOR ANY MEDIATEK + * SOFTWARE RELEASES MADE TO RECEIVER'S SPECIFICATION OR TO CONFORM TO A PARTICULAR + * STANDARD OR OPEN FORUM. RECEIVER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND + * CUMULATIVE LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE, + * AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE, + * OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY RECEIVER TO + * MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE. + * + * The following software/firmware and/or related documentation ("MediaTek Software") + * have been modified by MediaTek Inc. All revisions are subject to any receiver's + * applicable license agreements with MediaTek Inc. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +#define MSDC_SMPL_FALLING (1) +#define MSDC_CD_PIN_EN (1 << 0) /* card detection pin is wired */ +#define MSDC_WP_PIN_EN (1 << 1) /* write protection pin is wired */ +#define MSDC_REMOVABLE (1 << 5) /* removable slot */ +#define MSDC_SYS_SUSPEND (1 << 6) /* suspended by system */ +#define MSDC_HIGHSPEED (1 << 7) + +#define IRQ_SDC 22 + +#include + +#include "mt6575_sd.h" + +#define DRV_NAME "mtk-sd" + +#define HOST_MAX_NUM (1) /* +/- by chhung */ + +#define HOST_MAX_MCLK (48000000) /* +/- by chhung */ +#define HOST_MIN_MCLK (260000) + +#define HOST_MAX_BLKSZ (2048) + +#define MSDC_OCR_AVAIL (MMC_VDD_28_29 | MMC_VDD_29_30 | MMC_VDD_30_31 | MMC_VDD_31_32 | MMC_VDD_32_33) + +#define GPIO_PULL_DOWN (0) +#define GPIO_PULL_UP (1) + +#define DEFAULT_DEBOUNCE (8) /* 8 cycles */ +#define DEFAULT_DTOC (40) /* data timeout counter. 65536x40 sclk. */ + +#define CMD_TIMEOUT (HZ/10) /* 100ms */ +#define DAT_TIMEOUT (HZ/2 * 5) /* 500ms x5 */ + +#define MAX_DMA_CNT (64 * 1024 - 512) /* a single transaction for WIFI may be 50K*/ + +#define MAX_GPD_NUM (1 + 1) /* one null gpd */ +#define MAX_BD_NUM (1024) +#define MAX_BD_PER_GPD (MAX_BD_NUM) + +#define MAX_HW_SGMTS (MAX_BD_NUM) +#define MAX_PHY_SGMTS (MAX_BD_NUM) +#define MAX_SGMT_SZ (MAX_DMA_CNT) +#define MAX_REQ_SZ (MAX_SGMT_SZ * 8) + +#ifdef MT6575_SD_DEBUG +static struct msdc_regs *msdc_reg[HOST_MAX_NUM]; +#endif + +//================================= +#define PERI_MSDC0_PDN (15) +//#define PERI_MSDC1_PDN (16) +//#define PERI_MSDC2_PDN (17) +//#define PERI_MSDC3_PDN (18) + +struct msdc_host *msdc_6575_host[] = {NULL,NULL,NULL,NULL}; + +struct msdc_hw msdc0_hw = { + .clk_src = 0, + .cmd_edge = MSDC_SMPL_FALLING, + .data_edge = MSDC_SMPL_FALLING, + .clk_drv = 4, + .cmd_drv = 4, + .dat_drv = 4, + .data_pins = 4, + .data_offset = 0, + .flags = MSDC_SYS_SUSPEND | MSDC_WP_PIN_EN | MSDC_CD_PIN_EN | MSDC_REMOVABLE | MSDC_HIGHSPEED, +}; + +static struct resource mtk_sd_resources[] = { + [0] = { + .start = 0xb0130000, + .end = 0xb0133fff, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = IRQ_SDC, /*FIXME*/ + .end = IRQ_SDC, /*FIXME*/ + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device mtk_sd_device = { + .name = "mtk-sd", + .id = 0, + .num_resources = ARRAY_SIZE(mtk_sd_resources), + .resource = mtk_sd_resources, +}; +/* end of +++ */ + +static int msdc_rsp[] = { + 0, /* RESP_NONE */ + 1, /* RESP_R1 */ + 2, /* RESP_R2 */ + 3, /* RESP_R3 */ + 4, /* RESP_R4 */ + 1, /* RESP_R5 */ + 1, /* RESP_R6 */ + 1, /* RESP_R7 */ + 7, /* RESP_R1b */ +}; + +/* For Inhanced DMA */ +#define msdc_init_gpd_ex(gpd,extlen,cmd,arg,blknum) \ + do { \ + ((gpd_t*)gpd)->extlen = extlen; \ + ((gpd_t*)gpd)->cmd = cmd; \ + ((gpd_t*)gpd)->arg = arg; \ + ((gpd_t*)gpd)->blknum = blknum; \ + }while(0) + +#define msdc_init_bd(bd, blkpad, dwpad, dptr, dlen) \ + do { \ + BUG_ON(dlen > 0xFFFFUL); \ + ((bd_t*)bd)->blkpad = blkpad; \ + ((bd_t*)bd)->dwpad = dwpad; \ + ((bd_t*)bd)->ptr = (void*)dptr; \ + ((bd_t*)bd)->buflen = dlen; \ + }while(0) + +#define msdc_txfifocnt() ((sdr_read32(MSDC_FIFOCS) & MSDC_FIFOCS_TXCNT) >> 16) +#define msdc_rxfifocnt() ((sdr_read32(MSDC_FIFOCS) & MSDC_FIFOCS_RXCNT) >> 0) +#define msdc_fifo_write32(v) sdr_write32(MSDC_TXDATA, (v)) +#define msdc_fifo_write8(v) sdr_write8(MSDC_TXDATA, (v)) +#define msdc_fifo_read32() sdr_read32(MSDC_RXDATA) +#define msdc_fifo_read8() sdr_read8(MSDC_RXDATA) + + +#define msdc_dma_on() sdr_clr_bits(MSDC_CFG, MSDC_CFG_PIO) +#define msdc_dma_off() sdr_set_bits(MSDC_CFG, MSDC_CFG_PIO) + +#define msdc_retry(expr,retry,cnt) \ + do { \ + int backup = cnt; \ + while (retry) { \ + if (!(expr)) break; \ + if (cnt-- == 0) { \ + retry--; mdelay(1); cnt = backup; \ + } \ + } \ + WARN_ON(retry == 0); \ + } while(0) + +#if 0 /* +/- chhung */ +#define msdc_reset() \ + do { \ + int retry = 3, cnt = 1000; \ + sdr_set_bits(MSDC_CFG, MSDC_CFG_RST); \ + dsb(); \ + msdc_retry(sdr_read32(MSDC_CFG) & MSDC_CFG_RST, retry, cnt); \ + } while(0) +#else +#define msdc_reset() \ + do { \ + int retry = 3, cnt = 1000; \ + sdr_set_bits(MSDC_CFG, MSDC_CFG_RST); \ + msdc_retry(sdr_read32(MSDC_CFG) & MSDC_CFG_RST, retry, cnt); \ + } while(0) +#endif /* end of +/- */ + +#define msdc_clr_int() \ + do { \ + volatile u32 val = sdr_read32(MSDC_INT); \ + sdr_write32(MSDC_INT, val); \ + } while(0) + +#define msdc_clr_fifo() \ + do { \ + int retry = 3, cnt = 1000; \ + sdr_set_bits(MSDC_FIFOCS, MSDC_FIFOCS_CLR); \ + msdc_retry(sdr_read32(MSDC_FIFOCS) & MSDC_FIFOCS_CLR, retry, cnt); \ + } while(0) + +#define msdc_irq_save(val) \ + do { \ + val = sdr_read32(MSDC_INTEN); \ + sdr_clr_bits(MSDC_INTEN, val); \ + } while(0) + +#define msdc_irq_restore(val) \ + do { \ + sdr_set_bits(MSDC_INTEN, val); \ + } while(0) + +/* clock source for host: global */ +static u32 hclks[] = {48000000}; /* +/- by chhung */ + +//============================================ +// the power for msdc host controller: global +// always keep the VMC on. +//============================================ +#define msdc_vcore_on(host) \ + do { \ + printk("[+]VMC ref. count<%d>\n", ++host->pwr_ref); \ + (void)hwPowerOn(MT65XX_POWER_LDO_VMC, VOL_3300, "SD"); \ + } while (0) +#define msdc_vcore_off(host) \ + do { \ + printk("[-]VMC ref. count<%d>\n", --host->pwr_ref); \ + (void)hwPowerDown(MT65XX_POWER_LDO_VMC, "SD"); \ + } while (0) + +//==================================== +// the vdd output for card: global +// always keep the VMCH on. +//==================================== +#define msdc_vdd_on(host) \ + do { \ + (void)hwPowerOn(MT65XX_POWER_LDO_VMCH, VOL_3300, "SD"); \ + } while (0) +#define msdc_vdd_off(host) \ + do { \ + (void)hwPowerDown(MT65XX_POWER_LDO_VMCH, "SD"); \ + } while (0) + +#define sdc_is_busy() (sdr_read32(SDC_STS) & SDC_STS_SDCBUSY) +#define sdc_is_cmd_busy() (sdr_read32(SDC_STS) & SDC_STS_CMDBUSY) + +#define sdc_send_cmd(cmd,arg) \ + do { \ + sdr_write32(SDC_ARG, (arg)); \ + sdr_write32(SDC_CMD, (cmd)); \ + } while(0) + +// can modify to read h/w register. +//#define is_card_present(h) ((sdr_read32(MSDC_PS) & MSDC_PS_CDSTS) ? 0 : 1); +#define is_card_present(h) (((struct msdc_host*)(h))->card_inserted) + +/* +++ chhung */ +#ifndef __ASSEMBLY__ +#define PHYSADDR(a) (((unsigned long)(a)) & 0x1fffffff) +#else +#define PHYSADDR(a) ((a) & 0x1fffffff) +#endif +/* end of +++ */ +static unsigned int msdc_do_command(struct msdc_host *host, + struct mmc_command *cmd, + int tune, + unsigned long timeout); + +static int msdc_tune_cmdrsp(struct msdc_host*host,struct mmc_command *cmd); + +#ifdef MT6575_SD_DEBUG +static void msdc_dump_card_status(struct msdc_host *host, u32 status) +{ + static char *state[] = { + "Idle", /* 0 */ + "Ready", /* 1 */ + "Ident", /* 2 */ + "Stby", /* 3 */ + "Tran", /* 4 */ + "Data", /* 5 */ + "Rcv", /* 6 */ + "Prg", /* 7 */ + "Dis", /* 8 */ + "Reserved", /* 9 */ + "Reserved", /* 10 */ + "Reserved", /* 11 */ + "Reserved", /* 12 */ + "Reserved", /* 13 */ + "Reserved", /* 14 */ + "I/O mode", /* 15 */ + }; + if (status & R1_OUT_OF_RANGE) + printk("[CARD_STATUS] Out of Range\n"); + if (status & R1_ADDRESS_ERROR) + printk("[CARD_STATUS] Address Error\n"); + if (status & R1_BLOCK_LEN_ERROR) + printk("[CARD_STATUS] Block Len Error\n"); + if (status & R1_ERASE_SEQ_ERROR) + printk("[CARD_STATUS] Erase Seq Error\n"); + if (status & R1_ERASE_PARAM) + printk("[CARD_STATUS] Erase Param\n"); + if (status & R1_WP_VIOLATION) + printk("[CARD_STATUS] WP Violation\n"); + if (status & R1_CARD_IS_LOCKED) + printk("[CARD_STATUS] Card is Locked\n"); + if (status & R1_LOCK_UNLOCK_FAILED) + printk("[CARD_STATUS] Lock/Unlock Failed\n"); + if (status & R1_COM_CRC_ERROR) + printk("[CARD_STATUS] Command CRC Error\n"); + if (status & R1_ILLEGAL_COMMAND) + printk("[CARD_STATUS] Illegal Command\n"); + if (status & R1_CARD_ECC_FAILED) + printk("[CARD_STATUS] Card ECC Failed\n"); + if (status & R1_CC_ERROR) + printk("[CARD_STATUS] CC Error\n"); + if (status & R1_ERROR) + printk("[CARD_STATUS] Error\n"); + if (status & R1_UNDERRUN) + printk("[CARD_STATUS] Underrun\n"); + if (status & R1_OVERRUN) + printk("[CARD_STATUS] Overrun\n"); + if (status & R1_CID_CSD_OVERWRITE) + printk("[CARD_STATUS] CID/CSD Overwrite\n"); + if (status & R1_WP_ERASE_SKIP) + printk("[CARD_STATUS] WP Eraser Skip\n"); + if (status & R1_CARD_ECC_DISABLED) + printk("[CARD_STATUS] Card ECC Disabled\n"); + if (status & R1_ERASE_RESET) + printk("[CARD_STATUS] Erase Reset\n"); + if (status & R1_READY_FOR_DATA) + printk("[CARD_STATUS] Ready for Data\n"); + if (status & R1_SWITCH_ERROR) + printk("[CARD_STATUS] Switch error\n"); + if (status & R1_APP_CMD) + printk("[CARD_STATUS] App Command\n"); + + printk("[CARD_STATUS] '%s' State\n", state[R1_CURRENT_STATE(status)]); +} + +static void msdc_dump_ocr_reg(struct msdc_host *host, u32 resp) +{ + if (resp & (1 << 7)) + printk("[OCR] Low Voltage Range\n"); + if (resp & (1 << 15)) + printk("[OCR] 2.7-2.8 volt\n"); + if (resp & (1 << 16)) + printk("[OCR] 2.8-2.9 volt\n"); + if (resp & (1 << 17)) + printk("[OCR] 2.9-3.0 volt\n"); + if (resp & (1 << 18)) + printk("[OCR] 3.0-3.1 volt\n"); + if (resp & (1 << 19)) + printk("[OCR] 3.1-3.2 volt\n"); + if (resp & (1 << 20)) + printk("[OCR] 3.2-3.3 volt\n"); + if (resp & (1 << 21)) + printk("[OCR] 3.3-3.4 volt\n"); + if (resp & (1 << 22)) + printk("[OCR] 3.4-3.5 volt\n"); + if (resp & (1 << 23)) + printk("[OCR] 3.5-3.6 volt\n"); + if (resp & (1 << 24)) + printk("[OCR] Switching to 1.8V Accepted (S18A)\n"); + if (resp & (1 << 30)) + printk("[OCR] Card Capacity Status (CCS)\n"); + if (resp & (1 << 31)) + printk("[OCR] Card Power Up Status (Idle)\n"); + else + printk("[OCR] Card Power Up Status (Busy)\n"); +} + +static void msdc_dump_rca_resp(struct msdc_host *host, u32 resp) +{ + u32 status = (((resp >> 15) & 0x1) << 23) | + (((resp >> 14) & 0x1) << 22) | + (((resp >> 13) & 0x1) << 19) | + (resp & 0x1fff); + + printk("[RCA] 0x%.4x\n", resp >> 16); + + msdc_dump_card_status(host, status); +} + +static void msdc_dump_io_resp(struct msdc_host *host, u32 resp) +{ + u32 flags = (resp >> 8) & 0xFF; + char *state[] = {"DIS", "CMD", "TRN", "RFU"}; + + if (flags & (1 << 7)) + printk("[IO] COM_CRC_ERR\n"); + if (flags & (1 << 6)) + printk("[IO] Illgal command\n"); + if (flags & (1 << 3)) + printk("[IO] Error\n"); + if (flags & (1 << 2)) + printk("[IO] RFU\n"); + if (flags & (1 << 1)) + printk("[IO] Function number error\n"); + if (flags & (1 << 0)) + printk("[IO] Out of range\n"); + + printk("[IO] State: %s, Data:0x%x\n", state[(resp >> 12) & 0x3], resp & 0xFF); +} +#endif + +static void msdc_set_timeout(struct msdc_host *host, u32 ns, u32 clks) +{ + u32 base = host->base; + u32 timeout, clk_ns; + + host->timeout_ns = ns; + host->timeout_clks = clks; + + clk_ns = 1000000000UL / host->sclk; + timeout = ns / clk_ns + clks; + timeout = timeout >> 16; /* in 65536 sclk cycle unit */ + timeout = timeout > 1 ? timeout - 1 : 0; + timeout = timeout > 255 ? 255 : timeout; + + sdr_set_field(SDC_CFG, SDC_CFG_DTOC, timeout); + +/* printk("Set read data timeout: %dns %dclks -> %d x 65536 cycles\n", + ns, clks, timeout + 1);*/ +} + +static void msdc_eirq_sdio(void *data) +{ + struct msdc_host *host = (struct msdc_host *)data; + +// printk("SDIO EINT\n"); + + mmc_signal_sdio_irq(host->mmc); +} + +static void msdc_eirq_cd(void *data) +{ + struct msdc_host *host = (struct msdc_host *)data; + +// printk("CD EINT\n"); + + tasklet_hi_schedule(&host->card_tasklet); +} + +static void msdc_tasklet_card(unsigned long arg) +{ + struct msdc_host *host = (struct msdc_host *)arg; + struct msdc_hw *hw = host->hw; + u32 base = host->base; + u32 inserted; + u32 status = 0; + + spin_lock(&host->lock); + + if (hw->get_cd_status) { + inserted = hw->get_cd_status(); + } else { + status = sdr_read32(MSDC_PS); + inserted = (status & MSDC_PS_CDSTS) ? 0 : 1; + } + + host->card_inserted = inserted; + + if (!host->suspend) { + host->mmc->f_max = HOST_MAX_MCLK; + mmc_detect_change(host->mmc, msecs_to_jiffies(20)); + } + +// printk("card found<%s>\n", inserted ? "inserted" : "removed"); + + spin_unlock(&host->lock); +} + +static void msdc_set_mclk(struct msdc_host *host, int ddr, unsigned int hz) +{ + u32 base = host->base; + u32 hclk = host->hclk; + u32 mode, flags, div, sclk; + + if (!hz) { +// printk("set mclk to 0!!!\n"); + msdc_reset(); + return; + } + + msdc_irq_save(flags); + + if (ddr) { + mode = 0x2; + if (hz >= (hclk >> 2)) { + div = 1; + sclk = hclk >> 2; + } else { + div = (hclk + ((hz << 2) - 1)) / (hz << 2); + sclk = (hclk >> 2) / div; + } + } else if (hz >= hclk) { + mode = 0x1; + div = 0; + sclk = hclk; + } else { + mode = 0x0; + if (hz >= (hclk >> 1)) { + div = 0; + sclk = hclk >> 1; + } else { + div = (hclk + ((hz << 2) - 1)) / (hz << 2); + sclk = (hclk >> 2) / div; + } + } + + sdr_set_field(MSDC_CFG, MSDC_CFG_CKMOD, mode); + sdr_set_field(MSDC_CFG, MSDC_CFG_CKDIV, div); + + while (!(sdr_read32(MSDC_CFG) & MSDC_CFG_CKSTB)); + + host->sclk = sclk; + host->mclk = hz; + msdc_set_timeout(host, host->timeout_ns, host->timeout_clks); + +/* printk("!!! Set<%dKHz> Source<%dKHz> -> sclk<%dKHz>\n", + hz / 1000, hclk / 1000, sclk / 1000); +*/ + msdc_irq_restore(flags); +} + +static void msdc_abort_data(struct msdc_host *host) +{ + u32 base = host->base; + struct mmc_command *stop = host->mrq->stop; + +// printk("Need to Abort. dma<%d>\n", host->dma_xfer); + + msdc_reset(); + msdc_clr_fifo(); + msdc_clr_int(); + + if (stop) { +// printk("stop when abort CMD<%d>\n", stop->opcode); + msdc_do_command(host, stop, 0, CMD_TIMEOUT); + } +} + +static unsigned int msdc_command_start(struct msdc_host *host, + struct mmc_command *cmd, int tune, unsigned long timeout) +{ + u32 wints = MSDC_INT_CMDRDY | MSDC_INT_RSPCRCERR | MSDC_INT_CMDTMO | + MSDC_INT_ACMDRDY | MSDC_INT_ACMDCRCERR | MSDC_INT_ACMDTMO | + MSDC_INT_ACMD19_DONE; + u32 base = host->base; + u32 opcode = cmd->opcode; + u32 rawcmd; + u32 resp; + unsigned long tmo; + + if (opcode == MMC_SEND_OP_COND || opcode == SD_APP_OP_COND) + resp = RESP_R3; + else if (opcode == MMC_SET_RELATIVE_ADDR || opcode == SD_SEND_RELATIVE_ADDR) + resp = (mmc_cmd_type(cmd) == MMC_CMD_BCR) ? RESP_R6 : RESP_R1; + else if (opcode == MMC_FAST_IO) + resp = RESP_R4; + else if (opcode == MMC_GO_IRQ_STATE) + resp = RESP_R5; + else if (opcode == MMC_SELECT_CARD) + resp = (cmd->arg != 0) ? RESP_R1B : RESP_NONE; + else if (opcode == SD_IO_RW_DIRECT || opcode == SD_IO_RW_EXTENDED) + resp = RESP_R1; + else if (opcode == SD_SEND_IF_COND && (mmc_cmd_type(cmd) == MMC_CMD_BCR)) + resp = RESP_R1; + else { + switch (mmc_resp_type(cmd)) { + case MMC_RSP_R1: + resp = RESP_R1; + break; + case MMC_RSP_R1B: + resp = RESP_R1B; + break; + case MMC_RSP_R2: + resp = RESP_R2; + break; + case MMC_RSP_R3: + resp = RESP_R3; + break; + case MMC_RSP_NONE: + default: + resp = RESP_NONE; + break; + } + } + + cmd->error = 0; + rawcmd = opcode | msdc_rsp[resp] << 7 | host->blksz << 16; + + if (opcode == MMC_READ_MULTIPLE_BLOCK) { + rawcmd |= (2 << 11); + } else if (opcode == MMC_READ_SINGLE_BLOCK) { + rawcmd |= (1 << 11); + } else if (opcode == MMC_WRITE_MULTIPLE_BLOCK) { + rawcmd |= ((2 << 11) | (1 << 13)); + } else if (opcode == MMC_WRITE_BLOCK) { + rawcmd |= ((1 << 11) | (1 << 13)); + } else if (opcode == SD_IO_RW_EXTENDED) { + if (cmd->data->flags & MMC_DATA_WRITE) + rawcmd |= (1 << 13); + if (cmd->data->blocks > 1) + rawcmd |= (2 << 11); + else + rawcmd |= (1 << 11); + } else if (opcode == SD_IO_RW_DIRECT && cmd->flags == (unsigned int)-1) { + rawcmd |= (1 << 14); + } else if ((opcode == SD_APP_SEND_SCR) || + (opcode == SD_APP_SEND_NUM_WR_BLKS) || + (opcode == SD_SWITCH && (mmc_cmd_type(cmd) == MMC_CMD_ADTC)) || + (opcode == SD_APP_SD_STATUS && (mmc_cmd_type(cmd) == MMC_CMD_ADTC)) || + (opcode == MMC_SEND_EXT_CSD && (mmc_cmd_type(cmd) == MMC_CMD_ADTC))) { + rawcmd |= (1 << 11); + } else if (opcode == MMC_STOP_TRANSMISSION) { + rawcmd |= (1 << 14); + rawcmd &= ~(0x0FFF << 16); + } + +// printk("CMD<%d><0x%.8x> Arg<0x%.8x>\n", opcode , rawcmd, cmd->arg); + + tmo = jiffies + timeout; + + if (opcode == MMC_SEND_STATUS) { + for (;;) { + if (!sdc_is_cmd_busy()) + break; + + if (time_after(jiffies, tmo)) { + //printk("XXX cmd_busy timeout: before CMD<%d>\n", opcode); + cmd->error = (unsigned int)-ETIMEDOUT; + msdc_reset(); + goto end; + } + } + } else { + for (;;) { + if (!sdc_is_busy()) + break; + if (time_after(jiffies, tmo)) { + //printk("XXX sdc_busy timeout: before CMD<%d>\n", opcode); + cmd->error = (unsigned int)-ETIMEDOUT; + msdc_reset(); + goto end; + } + } + } + + //BUG_ON(in_interrupt()); + host->cmd = cmd; + host->cmd_rsp = resp; + init_completion(&host->cmd_done); + sdr_set_bits(MSDC_INTEN, wints); + sdc_send_cmd(rawcmd, cmd->arg); + +end: + return cmd->error; +} + +static unsigned int msdc_command_resp(struct msdc_host *host, struct mmc_command *cmd, + int tune, unsigned long timeout) +{ + u32 base = host->base; + //u32 opcode = cmd->opcode; + u32 resp; + u32 wints = MSDC_INT_CMDRDY | MSDC_INT_RSPCRCERR | MSDC_INT_CMDTMO | + MSDC_INT_ACMDRDY | MSDC_INT_ACMDCRCERR | MSDC_INT_ACMDTMO | + MSDC_INT_ACMD19_DONE; + + resp = host->cmd_rsp; + + BUG_ON(in_interrupt()); + spin_unlock(&host->lock); + if (!wait_for_completion_timeout(&host->cmd_done, 10*timeout)) { + //printk("XXX CMD<%d> wait_for_completion timeout ARG<0x%.8x>\n", opcode, cmd->arg); + cmd->error = (unsigned int)-ETIMEDOUT; + msdc_reset(); + } + spin_lock(&host->lock); + + sdr_clr_bits(MSDC_INTEN, wints); + host->cmd = NULL; + + if (!tune) + return cmd->error; + + /* memory card CRC */ + if (host->hw->flags & MSDC_REMOVABLE && cmd->error == (unsigned int)(-EIO) ) { + if (sdr_read32(SDC_CMD) & 0x1800) { + msdc_abort_data(host); + } else { + msdc_reset(); + msdc_clr_fifo(); + msdc_clr_int(); + } + cmd->error = msdc_tune_cmdrsp(host,cmd); + } + + return cmd->error; +} + +static unsigned int msdc_do_command(struct msdc_host *host, struct mmc_command *cmd, + int tune, unsigned long timeout) +{ + if (!msdc_command_start(host, cmd, tune, timeout)) + msdc_command_resp(host, cmd, tune, timeout); + + //printk(" return<%d> resp<0x%.8x>\n", cmd->error, cmd->resp[0]); + return cmd->error; +} + +static int msdc_pio_abort(struct msdc_host *host, struct mmc_data *data, unsigned long tmo) +{ + u32 base = host->base; + int ret = 0; + + if (atomic_read(&host->abort)) + ret = 1; + + if (time_after(jiffies, tmo)) { + data->error = (unsigned int)-ETIMEDOUT; + //printk("XXX PIO Data Timeout: CMD<%d>\n", host->mrq->cmd->opcode); + ret = 1; + } + + if (ret) { + msdc_reset(); + msdc_clr_fifo(); + msdc_clr_int(); + //printk("msdc pio find abort\n"); + } + + return ret; +} + +static int msdc_pio_read(struct msdc_host *host, struct mmc_data *data) +{ + struct scatterlist *sg = data->sg; + u32 base = host->base; + u32 num = data->sg_len; + u32 *ptr; + u8 *u8ptr; + u32 left; + u32 count, size = 0; + u32 wints = MSDC_INTEN_DATTMO | MSDC_INTEN_DATCRCERR; + unsigned long tmo = jiffies + DAT_TIMEOUT; + + sdr_set_bits(MSDC_INTEN, wints); + while (num) { + left = sg_dma_len(sg); + ptr = sg_virt(sg); + while (left) { + if ((left >= MSDC_FIFO_THD) && (msdc_rxfifocnt() >= MSDC_FIFO_THD)) { + count = MSDC_FIFO_THD >> 2; + do { + *ptr++ = msdc_fifo_read32(); + } while (--count); + left -= MSDC_FIFO_THD; + } else if ((left < MSDC_FIFO_THD) && msdc_rxfifocnt() >= left) { + while (left > 3) { + *ptr++ = msdc_fifo_read32(); + left -= 4; + } + + u8ptr = (u8 *)ptr; + while(left) { + * u8ptr++ = msdc_fifo_read8(); + left--; + } + } + + if (msdc_pio_abort(host, data, tmo)) + goto end; + } + size += sg_dma_len(sg); + sg = sg_next(sg); num--; + } +end: + data->bytes_xfered += size; + //printk(" PIO Read<%d>bytes\n", size); + + sdr_clr_bits(MSDC_INTEN, wints); + if(data->error) + printk("read pio data->error<%d> left<%d> size<%d>\n", data->error, left, size); + + return data->error; +} + +static int msdc_pio_write(struct msdc_host* host, struct mmc_data *data) +{ + u32 base = host->base; + struct scatterlist *sg = data->sg; + u32 num = data->sg_len; + u32 *ptr; + u8 *u8ptr; + u32 left; + u32 count, size = 0; + u32 wints = MSDC_INTEN_DATTMO | MSDC_INTEN_DATCRCERR; + unsigned long tmo = jiffies + DAT_TIMEOUT; + + sdr_set_bits(MSDC_INTEN, wints); + while (num) { + left = sg_dma_len(sg); + ptr = sg_virt(sg); + + while (left) { + if (left >= MSDC_FIFO_SZ && msdc_txfifocnt() == 0) { + count = MSDC_FIFO_SZ >> 2; + do { + msdc_fifo_write32(*ptr); ptr++; + } while (--count); + left -= MSDC_FIFO_SZ; + } else if (left < MSDC_FIFO_SZ && msdc_txfifocnt() == 0) { + while (left > 3) { + msdc_fifo_write32(*ptr); ptr++; + left -= 4; + } + + u8ptr = (u8*)ptr; + while( left) { + msdc_fifo_write8(*u8ptr); + u8ptr++; + left--; + } + } + + if (msdc_pio_abort(host, data, tmo)) + goto end; + } + size += sg_dma_len(sg); + sg = sg_next(sg); num--; + } +end: + data->bytes_xfered += size; + //printk(" PIO Write<%d>bytes\n", size); + if(data->error) + printk("write pio data->error<%d>\n", data->error); + + sdr_clr_bits(MSDC_INTEN, wints); + + return data->error; +} + +static void msdc_dma_start(struct msdc_host *host) +{ + u32 base = host->base; + u32 wints = MSDC_INTEN_XFER_COMPL | MSDC_INTEN_DATTMO | MSDC_INTEN_DATCRCERR; + + sdr_set_bits(MSDC_INTEN, wints); + sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_START, 1); + + //printk("DMA start\n"); +} + +static void msdc_dma_stop(struct msdc_host *host) +{ + u32 base = host->base; + u32 wints = MSDC_INTEN_XFER_COMPL | MSDC_INTEN_DATTMO | MSDC_INTEN_DATCRCERR; + + //printk("DMA status: 0x%.8x\n",sdr_read32(MSDC_DMA_CFG)); + + sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_STOP, 1); + while (sdr_read32(MSDC_DMA_CFG) & MSDC_DMA_CFG_STS); + sdr_clr_bits(MSDC_INTEN, wints); /* Not just xfer_comp */ + + //printk("DMA stop\n"); +} + +static u8 msdc_dma_calcs(u8 *buf, u32 len) +{ + u32 i, sum = 0; + + for (i = 0; i < len; i++) + sum += buf[i]; + + return 0xFF - (u8)sum; +} + +static int msdc_dma_config(struct msdc_host *host, struct msdc_dma *dma) +{ + u32 base = host->base; + u32 sglen = dma->sglen; + u32 j, num, bdlen; + u8 blkpad, dwpad, chksum; + struct scatterlist *sg = dma->sg; + gpd_t *gpd; + bd_t *bd; + + switch (dma->mode) { + case MSDC_MODE_DMA_BASIC: + BUG_ON(dma->xfersz > 65535); + BUG_ON(dma->sglen != 1); + sdr_write32(MSDC_DMA_SA, PHYSADDR(sg_dma_address(sg))); + sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_LASTBUF, 1); + sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_XFERSZ, sg_dma_len(sg)); + sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_BRUSTSZ, dma->burstsz); + sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_MODE, 0); + break; + + case MSDC_MODE_DMA_DESC: + blkpad = (dma->flags & DMA_FLAG_PAD_BLOCK) ? 1 : 0; + dwpad = (dma->flags & DMA_FLAG_PAD_DWORD) ? 1 : 0; + chksum = (dma->flags & DMA_FLAG_EN_CHKSUM) ? 1 : 0; + + num = (sglen + MAX_BD_PER_GPD - 1) / MAX_BD_PER_GPD; + BUG_ON(num !=1 ); + + gpd = dma->gpd; + bd = dma->bd; + bdlen = sglen; + + gpd->hwo = 1; /* hw will clear it */ + gpd->bdp = 1; + gpd->chksum = 0; /* need to clear first. */ + gpd->chksum = (chksum ? msdc_dma_calcs((u8 *)gpd, 16) : 0); + + for (j = 0; j < bdlen; j++) { + msdc_init_bd(&bd[j], blkpad, dwpad, sg_dma_address(sg), sg_dma_len(sg)); + if( j == bdlen - 1) + bd[j].eol = 1; + else + bd[j].eol = 0; + bd[j].chksum = 0; /* checksume need to clear first */ + bd[j].chksum = (chksum ? msdc_dma_calcs((u8 *)(&bd[j]), 16) : 0); + sg++; + } + + dma->used_gpd += 2; + dma->used_bd += bdlen; + + sdr_set_field(MSDC_DMA_CFG, MSDC_DMA_CFG_DECSEN, chksum); + sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_BRUSTSZ, dma->burstsz); + sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_MODE, 1); + sdr_write32(MSDC_DMA_SA, PHYSADDR((u32)dma->gpd_addr)); + break; + } + +// printk("DMA_CTRL = 0x%x\n", sdr_read32(MSDC_DMA_CTRL)); +// printk("DMA_CFG = 0x%x\n", sdr_read32(MSDC_DMA_CFG)); +// printk("DMA_SA = 0x%x\n", sdr_read32(MSDC_DMA_SA)); + + return 0; +} + +static void msdc_dma_setup(struct msdc_host *host, struct msdc_dma *dma, + struct scatterlist *sg, unsigned int sglen) +{ + BUG_ON(sglen > MAX_BD_NUM); + + dma->sg = sg; + dma->flags = DMA_FLAG_EN_CHKSUM; + dma->sglen = sglen; + dma->xfersz = host->xfer_size; + dma->burstsz = MSDC_BRUST_64B; + + if (sglen == 1 && sg_dma_len(sg) <= MAX_DMA_CNT) + dma->mode = MSDC_MODE_DMA_BASIC; + else + dma->mode = MSDC_MODE_DMA_DESC; + +// printk("DMA mode<%d> sglen<%d> xfersz<%d>\n", dma->mode, dma->sglen, dma->xfersz); + + msdc_dma_config(host, dma); +} + +static void msdc_set_blknum(struct msdc_host *host, u32 blknum) +{ + u32 base = host->base; + + sdr_write32(SDC_BLK_NUM, blknum); +} + +static int msdc_do_request(struct mmc_host*mmc, struct mmc_request*mrq) +{ + struct msdc_host *host = mmc_priv(mmc); + struct mmc_command *cmd; + struct mmc_data *data; + u32 base = host->base; + unsigned int left=0; + int dma = 0, read = 1, dir = DMA_FROM_DEVICE, send_type=0; + +#define SND_DAT 0 +#define SND_CMD 1 + + BUG_ON(mmc == NULL); + BUG_ON(mrq == NULL); + + host->error = 0; + atomic_set(&host->abort, 0); + + cmd = mrq->cmd; + data = mrq->cmd->data; + + if (!data) { + send_type = SND_CMD; + if (msdc_do_command(host, cmd, 1, CMD_TIMEOUT) != 0) + goto done; + } else { + BUG_ON(data->blksz > HOST_MAX_BLKSZ); + send_type=SND_DAT; + + data->error = 0; + read = data->flags & MMC_DATA_READ ? 1 : 0; + host->data = data; + host->xfer_size = data->blocks * data->blksz; + host->blksz = data->blksz; + + host->dma_xfer = dma = ((host->xfer_size >= 512) ? 1 : 0); + + if (read) + if ((host->timeout_ns != data->timeout_ns) || + (host->timeout_clks != data->timeout_clks)) + msdc_set_timeout(host, data->timeout_ns, data->timeout_clks); + + msdc_set_blknum(host, data->blocks); + + if (dma) { + msdc_dma_on(); + init_completion(&host->xfer_done); + + if (msdc_command_start(host, cmd, 1, CMD_TIMEOUT) != 0) + goto done; + + dir = read ? DMA_FROM_DEVICE : DMA_TO_DEVICE; + dma_map_sg(mmc_dev(mmc), data->sg, data->sg_len, dir); + msdc_dma_setup(host, &host->dma, data->sg, data->sg_len); + + if (msdc_command_resp(host, cmd, 1, CMD_TIMEOUT) != 0) + goto done; + + msdc_dma_start(host); + + spin_unlock(&host->lock); + if (!wait_for_completion_timeout(&host->xfer_done, DAT_TIMEOUT)) { + /*printk("XXX CMD<%d> wait xfer_done<%d> timeout!!\n", cmd->opcode, data->blocks * data->blksz); + printk(" DMA_SA = 0x%x\n", sdr_read32(MSDC_DMA_SA)); + printk(" DMA_CA = 0x%x\n", sdr_read32(MSDC_DMA_CA)); + printk(" DMA_CTRL = 0x%x\n", sdr_read32(MSDC_DMA_CTRL)); + printk(" DMA_CFG = 0x%x\n", sdr_read32(MSDC_DMA_CFG));*/ + data->error = (unsigned int)-ETIMEDOUT; + + msdc_reset(); + msdc_clr_fifo(); + msdc_clr_int(); + } + spin_lock(&host->lock); + msdc_dma_stop(host); + } else { + if (msdc_do_command(host, cmd, 1, CMD_TIMEOUT) != 0) + goto done; + + if (read) { + if (msdc_pio_read(host, data)) + goto done; + } else { + if (msdc_pio_write(host, data)) + goto done; + } + + if (!read) { + while (1) { + left = msdc_txfifocnt(); + if (left == 0) { + break; + } + if (msdc_pio_abort(host, data, jiffies + DAT_TIMEOUT)) { + break; + /* Fix me: what about if data error, when stop ? how to? */ + } + } + } else { + /* Fix me: read case: need to check CRC error */ + } + + /* For write case: SDCBUSY and Xfer_Comp will assert when DAT0 not busy. + For read case : SDCBUSY and Xfer_Comp will assert when last byte read out from FIFO. + */ + + /* try not to wait xfer_comp interrupt. + the next command will check SDC_BUSY. + SDC_BUSY means xfer_comp assert + */ + + } // PIO mode + + /* Last: stop transfer */ + if (data->stop){ + if (msdc_do_command(host, data->stop, 0, CMD_TIMEOUT) != 0) { + goto done; + } + } + } + +done: + if (data != NULL) { + host->data = NULL; + host->dma_xfer = 0; + if (dma != 0) { + msdc_dma_off(); + host->dma.used_bd = 0; + host->dma.used_gpd = 0; + dma_unmap_sg(mmc_dev(mmc), data->sg, data->sg_len, dir); + } + host->blksz = 0; + + // printk("CMD<%d> data<%s %s> blksz<%d> block<%d> error<%d>",cmd->opcode, (dma? "dma":"pio\n"), + // (read ? "read ":"write") ,data->blksz, data->blocks, data->error); + } + + if (mrq->cmd->error) host->error = 0x001; + if (mrq->data && mrq->data->error) host->error |= 0x010; + if (mrq->stop && mrq->stop->error) host->error |= 0x100; + + //if (host->error) printk("host->error<%d>\n", host->error); + + return host->error; +} + +static int msdc_app_cmd(struct mmc_host *mmc, struct msdc_host *host) +{ + struct mmc_command cmd; + struct mmc_request mrq; + u32 err; + + memset(&cmd, 0, sizeof(struct mmc_command)); + cmd.opcode = MMC_APP_CMD; +#if 0 /* bug: we meet mmc->card is null when ACMD6 */ + cmd.arg = mmc->card->rca << 16; +#else + cmd.arg = host->app_cmd_arg; +#endif + cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC; + + memset(&mrq, 0, sizeof(struct mmc_request)); + mrq.cmd = &cmd; cmd.mrq = &mrq; + cmd.data = NULL; + + err = msdc_do_command(host, &cmd, 0, CMD_TIMEOUT); + return err; +} + +static int msdc_tune_cmdrsp(struct msdc_host*host, struct mmc_command *cmd) +{ + int result = -1; + u32 base = host->base; + u32 rsmpl, cur_rsmpl, orig_rsmpl; + u32 rrdly, cur_rrdly = 0, orig_rrdly; + u32 skip = 1; + + /* ==== don't support 3.0 now ==== + 1: R_SMPL[1] + 2: PAD_CMD_RESP_RXDLY[26:22] + ==========================*/ + + // save the previous tune result + sdr_get_field(MSDC_IOCON, MSDC_IOCON_RSPL, orig_rsmpl); + sdr_get_field(MSDC_PAD_TUNE, MSDC_PAD_TUNE_CMDRRDLY, orig_rrdly); + + rrdly = 0; + do { + for (rsmpl = 0; rsmpl < 2; rsmpl++) { + /* Lv1: R_SMPL[1] */ + cur_rsmpl = (orig_rsmpl + rsmpl) % 2; + if (skip == 1) { + skip = 0; + continue; + } + sdr_set_field(MSDC_IOCON, MSDC_IOCON_RSPL, cur_rsmpl); + + if (host->app_cmd) { + result = msdc_app_cmd(host->mmc, host); + if (result) { + //printk("TUNE_CMD app_cmd<%d> failed: RESP_RXDLY<%d>,R_SMPL<%d>\n", + // host->mrq->cmd->opcode, cur_rrdly, cur_rsmpl); + continue; + } + } + result = msdc_do_command(host, cmd, 0, CMD_TIMEOUT); // not tune. + //printk("TUNE_CMD<%d> %s PAD_CMD_RESP_RXDLY[26:22]<%d> R_SMPL[1]<%d>\n", cmd->opcode, +// (result == 0) ? "PASS" : "FAIL", cur_rrdly, cur_rsmpl); + + if (result == 0) { + return 0; + } + if (result != (unsigned int)(-EIO)) { + // printk("TUNE_CMD<%d> Error<%d> not -EIO\n", cmd->opcode, result); + return result; + } + + /* should be EIO */ + if (sdr_read32(SDC_CMD) & 0x1800) { /* check if has data phase */ + msdc_abort_data(host); + } + } + + /* Lv2: PAD_CMD_RESP_RXDLY[26:22] */ + cur_rrdly = (orig_rrdly + rrdly + 1) % 32; + sdr_set_field(MSDC_PAD_TUNE, MSDC_PAD_TUNE_CMDRRDLY, cur_rrdly); + }while (++rrdly < 32); + + return result; +} + +/* Support SD2.0 Only */ +static int msdc_tune_bread(struct mmc_host *mmc, struct mmc_request *mrq) +{ + struct msdc_host *host = mmc_priv(mmc); + u32 base = host->base; + u32 ddr=0; + u32 dcrc = 0; + u32 rxdly, cur_rxdly0, cur_rxdly1; + u32 dsmpl, cur_dsmpl, orig_dsmpl; + u32 cur_dat0, cur_dat1, cur_dat2, cur_dat3; + u32 cur_dat4, cur_dat5, cur_dat6, cur_dat7; + u32 orig_dat0, orig_dat1, orig_dat2, orig_dat3; + u32 orig_dat4, orig_dat5, orig_dat6, orig_dat7; + int result = -1; + u32 skip = 1; + + sdr_get_field(MSDC_IOCON, MSDC_IOCON_DSPL, orig_dsmpl); + + /* Tune Method 2. */ + sdr_set_field(MSDC_IOCON, MSDC_IOCON_DDLSEL, 1); + + rxdly = 0; + do { + for (dsmpl = 0; dsmpl < 2; dsmpl++) { + cur_dsmpl = (orig_dsmpl + dsmpl) % 2; + if (skip == 1) { + skip = 0; + continue; + } + sdr_set_field(MSDC_IOCON, MSDC_IOCON_DSPL, cur_dsmpl); + + if (host->app_cmd) { + result = msdc_app_cmd(host->mmc, host); + if (result) { + //printk("TUNE_BREAD app_cmd<%d> failed\n", host->mrq->cmd->opcode); + continue; + } + } + result = msdc_do_request(mmc,mrq); + + sdr_get_field(SDC_DCRC_STS, SDC_DCRC_STS_POS|SDC_DCRC_STS_NEG, dcrc); /* RO */ + if (!ddr) dcrc &= ~SDC_DCRC_STS_NEG; + //printk("TUNE_BREAD<%s> dcrc<0x%x> DATRDDLY0/1<0x%x><0x%x> dsmpl<0x%x>\n", + // (result == 0 && dcrc == 0) ? "PASS" : "FAIL", dcrc, + // sdr_read32(MSDC_DAT_RDDLY0), sdr_read32(MSDC_DAT_RDDLY1), cur_dsmpl); + + /* Fix me: result is 0, but dcrc is still exist */ + if (result == 0 && dcrc == 0) { + goto done; + } else { + /* there is a case: command timeout, and data phase not processed */ + if (mrq->data->error != 0 && mrq->data->error != (unsigned int)(-EIO)) { + //printk("TUNE_READ: result<0x%x> cmd_error<%d> data_error<%d>\n", + // result, mrq->cmd->error, mrq->data->error); + goto done; + } + } + } + + cur_rxdly0 = sdr_read32(MSDC_DAT_RDDLY0); + cur_rxdly1 = sdr_read32(MSDC_DAT_RDDLY1); + + /* E1 ECO. YD: Reverse */ + if (sdr_read32(MSDC_ECO_VER) >= 4) { + orig_dat0 = (cur_rxdly0 >> 24) & 0x1F; + orig_dat1 = (cur_rxdly0 >> 16) & 0x1F; + orig_dat2 = (cur_rxdly0 >> 8) & 0x1F; + orig_dat3 = (cur_rxdly0 >> 0) & 0x1F; + orig_dat4 = (cur_rxdly1 >> 24) & 0x1F; + orig_dat5 = (cur_rxdly1 >> 16) & 0x1F; + orig_dat6 = (cur_rxdly1 >> 8) & 0x1F; + orig_dat7 = (cur_rxdly1 >> 0) & 0x1F; + } else { + orig_dat0 = (cur_rxdly0 >> 0) & 0x1F; + orig_dat1 = (cur_rxdly0 >> 8) & 0x1F; + orig_dat2 = (cur_rxdly0 >> 16) & 0x1F; + orig_dat3 = (cur_rxdly0 >> 24) & 0x1F; + orig_dat4 = (cur_rxdly1 >> 0) & 0x1F; + orig_dat5 = (cur_rxdly1 >> 8) & 0x1F; + orig_dat6 = (cur_rxdly1 >> 16) & 0x1F; + orig_dat7 = (cur_rxdly1 >> 24) & 0x1F; + } + + if (ddr) { + cur_dat0 = (dcrc & (1 << 0) || dcrc & (1 << 8)) ? ((orig_dat0 + 1) % 32) : orig_dat0; + cur_dat1 = (dcrc & (1 << 1) || dcrc & (1 << 9)) ? ((orig_dat1 + 1) % 32) : orig_dat1; + cur_dat2 = (dcrc & (1 << 2) || dcrc & (1 << 10)) ? ((orig_dat2 + 1) % 32) : orig_dat2; + cur_dat3 = (dcrc & (1 << 3) || dcrc & (1 << 11)) ? ((orig_dat3 + 1) % 32) : orig_dat3; + } else { + cur_dat0 = (dcrc & (1 << 0)) ? ((orig_dat0 + 1) % 32) : orig_dat0; + cur_dat1 = (dcrc & (1 << 1)) ? ((orig_dat1 + 1) % 32) : orig_dat1; + cur_dat2 = (dcrc & (1 << 2)) ? ((orig_dat2 + 1) % 32) : orig_dat2; + cur_dat3 = (dcrc & (1 << 3)) ? ((orig_dat3 + 1) % 32) : orig_dat3; + } + cur_dat4 = (dcrc & (1 << 4)) ? ((orig_dat4 + 1) % 32) : orig_dat4; + cur_dat5 = (dcrc & (1 << 5)) ? ((orig_dat5 + 1) % 32) : orig_dat5; + cur_dat6 = (dcrc & (1 << 6)) ? ((orig_dat6 + 1) % 32) : orig_dat6; + cur_dat7 = (dcrc & (1 << 7)) ? ((orig_dat7 + 1) % 32) : orig_dat7; + + cur_rxdly0 = (cur_dat0 << 24) | (cur_dat1 << 16) | (cur_dat2 << 8) | (cur_dat3 << 0); + cur_rxdly1 = (cur_dat4 << 24) | (cur_dat5 << 16) | (cur_dat6 << 8) | (cur_dat7 << 0); + + sdr_write32(MSDC_DAT_RDDLY0, cur_rxdly0); + sdr_write32(MSDC_DAT_RDDLY1, cur_rxdly1); + + } while (++rxdly < 32); + +done: + return result; +} + +static int msdc_tune_bwrite(struct mmc_host *mmc,struct mmc_request *mrq) +{ + struct msdc_host *host = mmc_priv(mmc); + u32 base = host->base; + + u32 wrrdly, cur_wrrdly = 0, orig_wrrdly; + u32 dsmpl, cur_dsmpl, orig_dsmpl; + u32 rxdly, cur_rxdly0; + u32 orig_dat0, orig_dat1, orig_dat2, orig_dat3; + u32 cur_dat0, cur_dat1, cur_dat2, cur_dat3; + int result = -1; + u32 skip = 1; + + // MSDC_IOCON_DDR50CKD need to check. [Fix me] + + sdr_get_field(MSDC_PAD_TUNE, MSDC_PAD_TUNE_DATWRDLY, orig_wrrdly); + sdr_get_field(MSDC_IOCON, MSDC_IOCON_DSPL, orig_dsmpl ); + + /* Tune Method 2. just DAT0 */ + sdr_set_field(MSDC_IOCON, MSDC_IOCON_DDLSEL, 1); + cur_rxdly0 = sdr_read32(MSDC_DAT_RDDLY0); + + /* E1 ECO. YD: Reverse */ + if (sdr_read32(MSDC_ECO_VER) >= 4) { + orig_dat0 = (cur_rxdly0 >> 24) & 0x1F; + orig_dat1 = (cur_rxdly0 >> 16) & 0x1F; + orig_dat2 = (cur_rxdly0 >> 8) & 0x1F; + orig_dat3 = (cur_rxdly0 >> 0) & 0x1F; + } else { + orig_dat0 = (cur_rxdly0 >> 0) & 0x1F; + orig_dat1 = (cur_rxdly0 >> 8) & 0x1F; + orig_dat2 = (cur_rxdly0 >> 16) & 0x1F; + orig_dat3 = (cur_rxdly0 >> 24) & 0x1F; + } + + rxdly = 0; + do { + wrrdly = 0; + do { + for (dsmpl = 0; dsmpl < 2; dsmpl++) { + cur_dsmpl = (orig_dsmpl + dsmpl) % 2; + if (skip == 1) { + skip = 0; + continue; + } + sdr_set_field(MSDC_IOCON, MSDC_IOCON_DSPL, cur_dsmpl); + + if (host->app_cmd) { + result = msdc_app_cmd(host->mmc, host); + if (result) { + //printk("TUNE_BWRITE app_cmd<%d> failed\n", host->mrq->cmd->opcode); + continue; + } + } + result = msdc_do_request(mmc,mrq); + + //printk("TUNE_BWRITE<%s> DSPL<%d> DATWRDLY<%d> MSDC_DAT_RDDLY0<0x%x>\n", + // result == 0 ? "PASS" : "FAIL", + // cur_dsmpl, cur_wrrdly, cur_rxdly0); + + if (result == 0) { + goto done; + } + else { + /* there is a case: command timeout, and data phase not processed */ + if (mrq->data->error != (unsigned int)(-EIO)) { + //printk("TUNE_READ: result<0x%x> cmd_error<%d> data_error<%d>\n", + // && result, mrq->cmd->error, mrq->data->error); + goto done; + } + } + } + cur_wrrdly = (orig_wrrdly + wrrdly + 1) % 32; + sdr_set_field(MSDC_PAD_TUNE, MSDC_PAD_TUNE_DATWRDLY, cur_wrrdly); + } while (++wrrdly < 32); + + cur_dat0 = (orig_dat0 + rxdly) % 32; /* only adjust bit-1 for crc */ + cur_dat1 = orig_dat1; + cur_dat2 = orig_dat2; + cur_dat3 = orig_dat3; + + cur_rxdly0 = (cur_dat0 << 24) | (cur_dat1 << 16) | (cur_dat2 << 8) | (cur_dat3 << 0); + sdr_write32(MSDC_DAT_RDDLY0, cur_rxdly0); + } while (++rxdly < 32); + +done: + return result; +} + +static int msdc_get_card_status(struct mmc_host *mmc, struct msdc_host *host, u32 *status) +{ + struct mmc_command cmd; + struct mmc_request mrq; + u32 err; + + memset(&cmd, 0, sizeof(struct mmc_command)); + cmd.opcode = MMC_SEND_STATUS; + if (mmc->card) { + cmd.arg = mmc->card->rca << 16; + } else { + //printk("cmd13 mmc card is null\n"); + cmd.arg = host->app_cmd_arg; + } + cmd.flags = MMC_RSP_SPI_R2 | MMC_RSP_R1 | MMC_CMD_AC; + + memset(&mrq, 0, sizeof(struct mmc_request)); + mrq.cmd = &cmd; cmd.mrq = &mrq; + cmd.data = NULL; + + err = msdc_do_command(host, &cmd, 1, CMD_TIMEOUT); + + if (status) + *status = cmd.resp[0]; + + return err; +} + +static int msdc_check_busy(struct mmc_host *mmc, struct msdc_host *host) +{ + u32 err = 0; + u32 status = 0; + + do { + err = msdc_get_card_status(mmc, host, &status); + if (err) + return err; + /* need cmd12? */ + //printk("cmd<13> resp<0x%x>\n", status); + } while (R1_CURRENT_STATE(status) == 7); + + return err; +} + +static int msdc_tune_request(struct mmc_host *mmc, struct mmc_request *mrq) +{ + struct msdc_host *host = mmc_priv(mmc); + struct mmc_command *cmd; + struct mmc_data *data; + int ret=0, read; + + cmd = mrq->cmd; + data = mrq->cmd->data; + + read = data->flags & MMC_DATA_READ ? 1 : 0; + + if (read) { + if (data->error == (unsigned int)(-EIO)) + ret = msdc_tune_bread(mmc,mrq); + } else { + ret = msdc_check_busy(mmc, host); + if (ret){ + //printk("XXX cmd13 wait program done failed\n"); + return ret; + } + /* CRC and TO */ + /* Fix me: don't care card status? */ + ret = msdc_tune_bwrite(mmc,mrq); + } + + return ret; +} + +static void msdc_ops_request(struct mmc_host *mmc,struct mmc_request *mrq) +{ + struct msdc_host *host = mmc_priv(mmc); + + if (host->mrq) { + //printk("XXX host->mrq<0x%.8x>\n", (int)host->mrq); + BUG(); + } + if (!is_card_present(host) || host->power_mode == MMC_POWER_OFF) { + //printk("cmd<%d> card<%d> power<%d>\n", mrq->cmd->opcode, is_card_present(host), host->power_mode); + mrq->cmd->error = (unsigned int)-ENOMEDIUM; + mrq->done(mrq); + return; + } + spin_lock(&host->lock); + + host->mrq = mrq; + + if (msdc_do_request(mmc,mrq)) + if(host->hw->flags & MSDC_REMOVABLE && mrq->data && mrq->data->error) + msdc_tune_request(mmc,mrq); + + if (mrq->cmd->opcode == MMC_APP_CMD) { + host->app_cmd = 1; + host->app_cmd_arg = mrq->cmd->arg; /* save the RCA */ + } else { + host->app_cmd = 0; + } + + host->mrq = NULL; + + spin_unlock(&host->lock); + + mmc_request_done(mmc, mrq); +} + +/* called by ops.set_ios */ +static void msdc_set_buswidth(struct msdc_host *host, u32 width) +{ + u32 base = host->base; + u32 val = sdr_read32(SDC_CFG); + + val &= ~SDC_CFG_BUSWIDTH; + + switch (width) { + default: + case MMC_BUS_WIDTH_1: + width = 1; + val |= (MSDC_BUS_1BITS << 16); + break; + case MMC_BUS_WIDTH_4: + val |= (MSDC_BUS_4BITS << 16); + break; + case MMC_BUS_WIDTH_8: + val |= (MSDC_BUS_8BITS << 16); + break; + } + + sdr_write32(SDC_CFG, val); + + //printk("Bus Width = %d\n", width); +} + +/* ops.set_ios */ +static void msdc_ops_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) +{ + struct msdc_host *host = mmc_priv(mmc); + struct msdc_hw *hw=host->hw; + u32 base = host->base; + u32 ddr = 0; + +#ifdef MT6575_SD_DEBUG + static char *vdd[] = { + "1.50v", "1.55v", "1.60v", "1.65v", "1.70v", "1.80v", "1.90v", + "2.00v", "2.10v", "2.20v", "2.30v", "2.40v", "2.50v", "2.60v", + "2.70v", "2.80v", "2.90v", "3.00v", "3.10v", "3.20v", "3.30v", + "3.40v", "3.50v", "3.60v" + }; + static char *power_mode[] = { + "OFF", "UP", "ON" + }; + static char *bus_mode[] = { + "UNKNOWN", "OPENDRAIN", "PUSHPULL" + }; + static char *timing[] = { + "LEGACY", "MMC_HS", "SD_HS" + }; + + /*printk("SET_IOS: CLK(%dkHz), BUS(%s), BW(%u), PWR(%s), VDD(%s), TIMING(%s)\n", + ios->clock / 1000, bus_mode[ios->bus_mode], + (ios->bus_width == MMC_BUS_WIDTH_4) ? 4 : 1, + power_mode[ios->power_mode], vdd[ios->vdd], timing[ios->timing]);*/ +#endif + + msdc_set_buswidth(host, ios->bus_width); + + /* Power control ??? */ + switch (ios->power_mode) { + case MMC_POWER_OFF: + case MMC_POWER_UP: + // msdc_set_power_mode(host, ios->power_mode); /* --- by chhung */ + break; + case MMC_POWER_ON: + host->power_mode = MMC_POWER_ON; + break; + default: + break; + } + + /* Clock control */ + if (host->mclk != ios->clock) { + if(ios->clock > 25000000) { + //printk("SD data latch edge<%d>\n", hw->data_edge); + sdr_set_field(MSDC_IOCON, MSDC_IOCON_RSPL, hw->cmd_edge); + sdr_set_field(MSDC_IOCON, MSDC_IOCON_DSPL, hw->data_edge); + } else { + sdr_write32(MSDC_IOCON, 0x00000000); + sdr_write32(MSDC_DAT_RDDLY0, 0x10101010); // for MT7620 E2 and afterward + sdr_write32(MSDC_DAT_RDDLY1, 0x00000000); + sdr_write32(MSDC_PAD_TUNE, 0x84101010); // for MT7620 E2 and afterward + } + msdc_set_mclk(host, ddr, ios->clock); + } +} + +/* ops.get_ro */ +static int msdc_ops_get_ro(struct mmc_host *mmc) +{ + struct msdc_host *host = mmc_priv(mmc); + u32 base = host->base; + unsigned long flags; + int ro = 0; + + if (host->hw->flags & MSDC_WP_PIN_EN) { /* set for card */ + spin_lock_irqsave(&host->lock, flags); + ro = (sdr_read32(MSDC_PS) >> 31); + spin_unlock_irqrestore(&host->lock, flags); + } + return ro; +} + +/* ops.get_cd */ +static int msdc_ops_get_cd(struct mmc_host *mmc) +{ + struct msdc_host *host = mmc_priv(mmc); + u32 base = host->base; + unsigned long flags; + int present = 1; + + /* for sdio, MSDC_REMOVABLE not set, always return 1 */ + if (!(host->hw->flags & MSDC_REMOVABLE)) { + /* For sdio, read H/W always get<1>, but may timeout some times */ +#if 1 + host->card_inserted = 1; + return 1; +#else + host->card_inserted = (host->pm_state.event == PM_EVENT_USER_RESUME) ? 1 : 0; + printk("sdio ops_get_cd<%d>\n", host->card_inserted); + return host->card_inserted; +#endif + } + + /* MSDC_CD_PIN_EN set for card */ + if (host->hw->flags & MSDC_CD_PIN_EN) { + spin_lock_irqsave(&host->lock, flags); +#if 0 + present = host->card_inserted; /* why not read from H/W: Fix me*/ +#else + present = (sdr_read32(MSDC_PS) & MSDC_PS_CDSTS) ? 0 : 1; + host->card_inserted = present; +#endif + spin_unlock_irqrestore(&host->lock, flags); + } else { + present = 0; /* TODO? Check DAT3 pins for card detection */ + } + + //printk("ops_get_cd return<%d>\n", present); + return present; +} + +/* ops.enable_sdio_irq */ +static void msdc_ops_enable_sdio_irq(struct mmc_host *mmc, int enable) +{ + struct msdc_host *host = mmc_priv(mmc); + struct msdc_hw *hw = host->hw; + u32 base = host->base; + u32 tmp; + + if (hw->flags & MSDC_EXT_SDIO_IRQ) { /* yes for sdio */ + if (enable) { + hw->enable_sdio_eirq(); /* combo_sdio_enable_eirq */ + } else { + hw->disable_sdio_eirq(); /* combo_sdio_disable_eirq */ + } + } else { + //printk("XXX \n"); /* so never enter here */ + tmp = sdr_read32(SDC_CFG); + /* FIXME. Need to interrupt gap detection */ + if (enable) { + tmp |= (SDC_CFG_SDIOIDE | SDC_CFG_SDIOINTWKUP); + } else { + tmp &= ~(SDC_CFG_SDIOIDE | SDC_CFG_SDIOINTWKUP); + } + sdr_write32(SDC_CFG, tmp); + } +} + +static struct mmc_host_ops mt_msdc_ops = { + .request = msdc_ops_request, + .set_ios = msdc_ops_set_ios, + .get_ro = msdc_ops_get_ro, + .get_cd = msdc_ops_get_cd, + .enable_sdio_irq = msdc_ops_enable_sdio_irq, +}; + +/*--------------------------------------------------------------------------*/ +/* interrupt handler */ +/*--------------------------------------------------------------------------*/ +static irqreturn_t msdc_irq(int irq, void *dev_id) +{ + struct msdc_host *host = (struct msdc_host *)dev_id; + struct mmc_data *data = host->data; + struct mmc_command *cmd = host->cmd; + u32 base = host->base; + + u32 cmdsts = MSDC_INT_RSPCRCERR | MSDC_INT_CMDTMO | MSDC_INT_CMDRDY | + MSDC_INT_ACMDCRCERR | MSDC_INT_ACMDTMO | MSDC_INT_ACMDRDY | + MSDC_INT_ACMD19_DONE; + u32 datsts = MSDC_INT_DATCRCERR |MSDC_INT_DATTMO; + + u32 intsts = sdr_read32(MSDC_INT); + u32 inten = sdr_read32(MSDC_INTEN); inten &= intsts; + + sdr_write32(MSDC_INT, intsts); /* clear interrupts */ + /* MSG will cause fatal error */ + + /* card change interrupt */ + if (intsts & MSDC_INT_CDSC){ + //printk("MSDC_INT_CDSC irq<0x%.8x>\n", intsts); + tasklet_hi_schedule(&host->card_tasklet); + /* tuning when plug card ? */ + } + + /* sdio interrupt */ + if (intsts & MSDC_INT_SDIOIRQ){ + //printk("XXX MSDC_INT_SDIOIRQ\n"); /* seems not sdio irq */ + //mmc_signal_sdio_irq(host->mmc); + } + + /* transfer complete interrupt */ + if (data != NULL) { + if (inten & MSDC_INT_XFER_COMPL) { + data->bytes_xfered = host->dma.xfersz; + complete(&host->xfer_done); + } + + if (intsts & datsts) { + /* do basic reset, or stop command will sdc_busy */ + msdc_reset(); + msdc_clr_fifo(); + msdc_clr_int(); + atomic_set(&host->abort, 1); /* For PIO mode exit */ + + if (intsts & MSDC_INT_DATTMO){ + //printk("XXX CMD<%d> MSDC_INT_DATTMO\n", host->mrq->cmd->opcode); + data->error = (unsigned int)-ETIMEDOUT; + } + else if (intsts & MSDC_INT_DATCRCERR){ + //printk("XXX CMD<%d> MSDC_INT_DATCRCERR, SDC_DCRC_STS<0x%x>\n", host->mrq->cmd->opcode, sdr_read32(SDC_DCRC_STS)); + data->error = (unsigned int)-EIO; + } + + //if(sdr_read32(MSDC_INTEN) & MSDC_INT_XFER_COMPL) { + if (host->dma_xfer) { + complete(&host->xfer_done); /* Read CRC come fast, XFER_COMPL not enabled */ + } /* PIO mode can't do complete, because not init */ + } + } + + /* command interrupts */ + if ((cmd != NULL) && (intsts & cmdsts)) { + if ((intsts & MSDC_INT_CMDRDY) || (intsts & MSDC_INT_ACMDRDY) || + (intsts & MSDC_INT_ACMD19_DONE)) { + u32 *rsp = &cmd->resp[0]; + + switch (host->cmd_rsp) { + case RESP_NONE: + break; + case RESP_R2: + *rsp++ = sdr_read32(SDC_RESP3); *rsp++ = sdr_read32(SDC_RESP2); + *rsp++ = sdr_read32(SDC_RESP1); *rsp++ = sdr_read32(SDC_RESP0); + break; + default: /* Response types 1, 3, 4, 5, 6, 7(1b) */ + if ((intsts & MSDC_INT_ACMDRDY) || (intsts & MSDC_INT_ACMD19_DONE)) { + *rsp = sdr_read32(SDC_ACMD_RESP); + } else { + *rsp = sdr_read32(SDC_RESP0); + } + break; + } + } else if ((intsts & MSDC_INT_RSPCRCERR) || (intsts & MSDC_INT_ACMDCRCERR)) { + if(intsts & MSDC_INT_ACMDCRCERR){ + //printk("XXX CMD<%d> MSDC_INT_ACMDCRCERR\n",cmd->opcode); + } + else { + //printk("XXX CMD<%d> MSDC_INT_RSPCRCERR\n",cmd->opcode); + } + cmd->error = (unsigned int)-EIO; + } else if ((intsts & MSDC_INT_CMDTMO) || (intsts & MSDC_INT_ACMDTMO)) { + if(intsts & MSDC_INT_ACMDTMO){ + //printk("XXX CMD<%d> MSDC_INT_ACMDTMO\n",cmd->opcode); + } + else { + //printk("XXX CMD<%d> MSDC_INT_CMDTMO\n",cmd->opcode); + } + cmd->error = (unsigned int)-ETIMEDOUT; + msdc_reset(); + msdc_clr_fifo(); + msdc_clr_int(); + } + complete(&host->cmd_done); + } + + /* mmc irq interrupts */ + if (intsts & MSDC_INT_MMCIRQ) { + //printk(KERN_INFO "msdc[%d] MMCIRQ: SDC_CSTS=0x%.8x\r\n", host->id, sdr_read32(SDC_CSTS)); + } + +#ifdef MT6575_SD_DEBUG + { + msdc_int_reg *int_reg = (msdc_int_reg*)&intsts; + /*printk("IRQ_EVT(0x%x): MMCIRQ(%d) CDSC(%d), ACRDY(%d), ACTMO(%d), ACCRE(%d) AC19DN(%d)\n", + intsts, + int_reg->mmcirq, + int_reg->cdsc, + int_reg->atocmdrdy, + int_reg->atocmdtmo, + int_reg->atocmdcrc, + int_reg->atocmd19done); + printk("IRQ_EVT(0x%x): SDIO(%d) CMDRDY(%d), CMDTMO(%d), RSPCRC(%d), CSTA(%d)\n", + intsts, + int_reg->sdioirq, + int_reg->cmdrdy, + int_reg->cmdtmo, + int_reg->rspcrc, + int_reg->csta); + printk("IRQ_EVT(0x%x): XFCMP(%d) DXDONE(%d), DATTMO(%d), DATCRC(%d), DMAEMP(%d)\n", + intsts, + int_reg->xfercomp, + int_reg->dxferdone, + int_reg->dattmo, + int_reg->datcrc, + int_reg->dmaqempty);*/ + + } +#endif + + return IRQ_HANDLED; +} + +/*--------------------------------------------------------------------------*/ +/* platform_driver members */ +/*--------------------------------------------------------------------------*/ +/* called by msdc_drv_probe/remove */ +static void msdc_enable_cd_irq(struct msdc_host *host, int enable) +{ + struct msdc_hw *hw = host->hw; + u32 base = host->base; + + /* for sdio, not set */ + if ((hw->flags & MSDC_CD_PIN_EN) == 0) { + /* Pull down card detection pin since it is not avaiable */ + /* + if (hw->config_gpio_pin) + hw->config_gpio_pin(MSDC_CD_PIN, GPIO_PULL_DOWN); + */ + sdr_clr_bits(MSDC_PS, MSDC_PS_CDEN); + sdr_clr_bits(MSDC_INTEN, MSDC_INTEN_CDSC); + sdr_clr_bits(SDC_CFG, SDC_CFG_INSWKUP); + return; + } + + //printk("CD IRQ Eanable(%d)\n", enable); + + if (enable) { + if (hw->enable_cd_eirq) { /* not set, never enter */ + hw->enable_cd_eirq(); + } else { + /* card detection circuit relies on the core power so that the core power + * shouldn't be turned off. Here adds a reference count to keep + * the core power alive. + */ + //msdc_vcore_on(host); //did in msdc_init_hw() + + if (hw->config_gpio_pin) /* NULL */ + hw->config_gpio_pin(MSDC_CD_PIN, GPIO_PULL_UP); + + sdr_set_field(MSDC_PS, MSDC_PS_CDDEBOUNCE, DEFAULT_DEBOUNCE); + sdr_set_bits(MSDC_PS, MSDC_PS_CDEN); + sdr_set_bits(MSDC_INTEN, MSDC_INTEN_CDSC); + sdr_set_bits(SDC_CFG, SDC_CFG_INSWKUP); /* not in document! Fix me */ + } + } else { + if (hw->disable_cd_eirq) { + hw->disable_cd_eirq(); + } else { + if (hw->config_gpio_pin) /* NULL */ + hw->config_gpio_pin(MSDC_CD_PIN, GPIO_PULL_DOWN); + + sdr_clr_bits(SDC_CFG, SDC_CFG_INSWKUP); + sdr_clr_bits(MSDC_PS, MSDC_PS_CDEN); + sdr_clr_bits(MSDC_INTEN, MSDC_INTEN_CDSC); + + /* Here decreases a reference count to core power since card + * detection circuit is shutdown. + */ + //msdc_vcore_off(host); + } + } +} + +/* called by msdc_drv_probe */ +static void msdc_init_hw(struct msdc_host *host) +{ + u32 base = host->base; + struct msdc_hw *hw = host->hw; + +#ifdef MT6575_SD_DEBUG + msdc_reg[host->id] = (struct msdc_regs *)host->base; +#endif + + /* Power on */ +#if 0 /* --- chhung */ + msdc_vcore_on(host); + msdc_pin_reset(host, MSDC_PIN_PULL_UP); + msdc_select_clksrc(host, hw->clk_src); + enable_clock(PERI_MSDC0_PDN + host->id, "SD"); + msdc_vdd_on(host); +#endif /* end of --- */ + /* Configure to MMC/SD mode */ + sdr_set_field(MSDC_CFG, MSDC_CFG_MODE, MSDC_SDMMC); + + /* Reset */ + msdc_reset(); + msdc_clr_fifo(); + + /* Disable card detection */ + sdr_clr_bits(MSDC_PS, MSDC_PS_CDEN); + + /* Disable and clear all interrupts */ + sdr_clr_bits(MSDC_INTEN, sdr_read32(MSDC_INTEN)); + sdr_write32(MSDC_INT, sdr_read32(MSDC_INT)); + +#if 1 + /* reset tuning parameter */ + sdr_write32(MSDC_PAD_CTL0, 0x00090000); + sdr_write32(MSDC_PAD_CTL1, 0x000A0000); + sdr_write32(MSDC_PAD_CTL2, 0x000A0000); + // sdr_write32(MSDC_PAD_TUNE, 0x00000000); + sdr_write32(MSDC_PAD_TUNE, 0x84101010); // for MT7620 E2 and afterward + // sdr_write32(MSDC_DAT_RDDLY0, 0x00000000); + sdr_write32(MSDC_DAT_RDDLY0, 0x10101010); // for MT7620 E2 and afterward + sdr_write32(MSDC_DAT_RDDLY1, 0x00000000); + sdr_write32(MSDC_IOCON, 0x00000000); +#if 0 // use MT7620 default value: 0x403c004f + sdr_write32(MSDC_PATCH_BIT0, 0x003C000F); /* bit0 modified: Rx Data Clock Source: 1 -> 2.0*/ +#endif + + if (sdr_read32(MSDC_ECO_VER) >= 4) { + if (host->id == 1) { + sdr_set_field(MSDC_PATCH_BIT1, MSDC_PATCH_BIT1_WRDAT_CRCS, 1); + sdr_set_field(MSDC_PATCH_BIT1, MSDC_PATCH_BIT1_CMD_RSP, 1); + + /* internal clock: latch read data */ + sdr_set_bits(MSDC_PATCH_BIT0, MSDC_PATCH_BIT_CKGEN_CK); + } + } +#endif + + /* for safety, should clear SDC_CFG.SDIO_INT_DET_EN & set SDC_CFG.SDIO in + pre-loader,uboot,kernel drivers. and SDC_CFG.SDIO_INT_DET_EN will be only + set when kernel driver wants to use SDIO bus interrupt */ + /* Configure to enable SDIO mode. it's must otherwise sdio cmd5 failed */ + sdr_set_bits(SDC_CFG, SDC_CFG_SDIO); + + /* disable detect SDIO device interupt function */ + sdr_clr_bits(SDC_CFG, SDC_CFG_SDIOIDE); + + /* eneable SMT for glitch filter */ + sdr_set_bits(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKSMT); + sdr_set_bits(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDSMT); + sdr_set_bits(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATSMT); + +#if 1 + /* set clk, cmd, dat pad driving */ + sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKDRVN, hw->clk_drv); + sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKDRVP, hw->clk_drv); + sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDDRVN, hw->cmd_drv); + sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDDRVP, hw->cmd_drv); + sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATDRVN, hw->dat_drv); + sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATDRVP, hw->dat_drv); +#else + sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKDRVN, 0); + sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKDRVP, 0); + sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDDRVN, 0); + sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDDRVP, 0); + sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATDRVN, 0); + sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATDRVP, 0); +#endif + + /* set sampling edge */ + + /* write crc timeout detection */ + sdr_set_field(MSDC_PATCH_BIT0, 1 << 30, 1); + + /* Configure to default data timeout */ + sdr_set_field(SDC_CFG, SDC_CFG_DTOC, DEFAULT_DTOC); + + msdc_set_buswidth(host, MMC_BUS_WIDTH_1); + + //printk("init hardware done!\n"); +} + +/* called by msdc_drv_remove */ +static void msdc_deinit_hw(struct msdc_host *host) +{ + u32 base = host->base; + + /* Disable and clear all interrupts */ + sdr_clr_bits(MSDC_INTEN, sdr_read32(MSDC_INTEN)); + sdr_write32(MSDC_INT, sdr_read32(MSDC_INT)); + + /* Disable card detection */ + msdc_enable_cd_irq(host, 0); + // msdc_set_power_mode(host, MMC_POWER_OFF); /* make sure power down */ /* --- by chhung */ +} + +/* init gpd and bd list in msdc_drv_probe */ +static void msdc_init_gpd_bd(struct msdc_host *host, struct msdc_dma *dma) +{ + gpd_t *gpd = dma->gpd; + bd_t *bd = dma->bd; + bd_t *ptr, *prev; + + /* we just support one gpd */ + int bdlen = MAX_BD_PER_GPD; + + /* init the 2 gpd */ + memset(gpd, 0, sizeof(gpd_t) * 2); + //gpd->next = (void *)virt_to_phys(gpd + 1); /* pointer to a null gpd, bug! kmalloc <-> virt_to_phys */ + //gpd->next = (dma->gpd_addr + 1); /* bug */ + gpd->next = (void *)((u32)dma->gpd_addr + sizeof(gpd_t)); + + //gpd->intr = 0; + gpd->bdp = 1; /* hwo, cs, bd pointer */ + //gpd->ptr = (void*)virt_to_phys(bd); + gpd->ptr = (void *)dma->bd_addr; /* physical address */ + + memset(bd, 0, sizeof(bd_t) * bdlen); + ptr = bd + bdlen - 1; + //ptr->eol = 1; /* 0 or 1 [Fix me]*/ + //ptr->next = 0; + + while (ptr != bd) { + prev = ptr - 1; + prev->next = (void *)(dma->bd_addr + sizeof(bd_t) *(ptr - bd)); + ptr = prev; + } +} + +static int msdc_drv_probe(struct platform_device *pdev) +{ + struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + __iomem void *base; + struct mmc_host *mmc; + struct resource *mem; + struct msdc_host *host; + struct msdc_hw *hw; + int ret, irq; + pdev->dev.platform_data = &msdc0_hw; + + /* Allocate MMC host for this device */ + mmc = mmc_alloc_host(sizeof(struct msdc_host), &pdev->dev); + if (!mmc) return -ENOMEM; + + hw = (struct msdc_hw*)pdev->dev.platform_data; + mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + irq = platform_get_irq(pdev, 0); + + //BUG_ON((!hw) || (!mem) || (irq < 0)); /* --- by chhung */ + + base = devm_request_and_ioremap(&pdev->dev, res); + if (IS_ERR(base)) + return PTR_ERR(base); + +/* mem = request_mem_region(mem->start - 0xa0000000, (mem->end - mem->start + 1) - 0xa0000000, dev_name(&pdev->dev)); + if (mem == NULL) { + mmc_free_host(mmc); + return -EBUSY; + } +*/ + /* Set host parameters to mmc */ + mmc->ops = &mt_msdc_ops; + mmc->f_min = HOST_MIN_MCLK; + mmc->f_max = HOST_MAX_MCLK; + mmc->ocr_avail = MSDC_OCR_AVAIL; + + /* For sd card: MSDC_SYS_SUSPEND | MSDC_WP_PIN_EN | MSDC_CD_PIN_EN | MSDC_REMOVABLE | MSDC_HIGHSPEED, + For sdio : MSDC_EXT_SDIO_IRQ | MSDC_HIGHSPEED */ + if (hw->flags & MSDC_HIGHSPEED) { + mmc->caps = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED; + } + if (hw->data_pins == 4) { /* current data_pins are all 4*/ + mmc->caps |= MMC_CAP_4_BIT_DATA; + } else if (hw->data_pins == 8) { + mmc->caps |= MMC_CAP_8_BIT_DATA; + } + if ((hw->flags & MSDC_SDIO_IRQ) || (hw->flags & MSDC_EXT_SDIO_IRQ)) + mmc->caps |= MMC_CAP_SDIO_IRQ; /* yes for sdio */ + + /* MMC core transfer sizes tunable parameters */ + // mmc->max_hw_segs = MAX_HW_SGMTS; +// mmc->max_phys_segs = MAX_PHY_SGMTS; + mmc->max_seg_size = MAX_SGMT_SZ; + mmc->max_blk_size = HOST_MAX_BLKSZ; + mmc->max_req_size = MAX_REQ_SZ; + mmc->max_blk_count = mmc->max_req_size; + + host = mmc_priv(mmc); + host->hw = hw; + host->mmc = mmc; + host->id = pdev->id; + host->error = 0; + host->irq = irq; + host->base = (unsigned long) base; + host->mclk = 0; /* mclk: the request clock of mmc sub-system */ + host->hclk = hclks[hw->clk_src]; /* hclk: clock of clock source to msdc controller */ + host->sclk = 0; /* sclk: the really clock after divition */ + host->pm_state = PMSG_RESUME; + host->suspend = 0; + host->core_clkon = 0; + host->card_clkon = 0; + host->core_power = 0; + host->power_mode = MMC_POWER_OFF; +// host->card_inserted = hw->flags & MSDC_REMOVABLE ? 0 : 1; + host->timeout_ns = 0; + host->timeout_clks = DEFAULT_DTOC * 65536; + + host->mrq = NULL; + //init_MUTEX(&host->sem); /* we don't need to support multiple threads access */ + + host->dma.used_gpd = 0; + host->dma.used_bd = 0; + + /* using dma_alloc_coherent*/ /* todo: using 1, for all 4 slots */ + host->dma.gpd = dma_alloc_coherent(NULL, MAX_GPD_NUM * sizeof(gpd_t), &host->dma.gpd_addr, GFP_KERNEL); + host->dma.bd = dma_alloc_coherent(NULL, MAX_BD_NUM * sizeof(bd_t), &host->dma.bd_addr, GFP_KERNEL); + BUG_ON((!host->dma.gpd) || (!host->dma.bd)); + msdc_init_gpd_bd(host, &host->dma); + /*for emmc*/ + msdc_6575_host[pdev->id] = host; + + tasklet_init(&host->card_tasklet, msdc_tasklet_card, (ulong)host); + spin_lock_init(&host->lock); + msdc_init_hw(host); + + ret = request_irq((unsigned int)irq, msdc_irq, IRQF_TRIGGER_LOW, dev_name(&pdev->dev), host); + if (ret) goto release; + // mt65xx_irq_unmask(irq); /* --- by chhung */ + + if (hw->flags & MSDC_CD_PIN_EN) { /* not set for sdio */ + if (hw->request_cd_eirq) { /* not set for MT6575 */ + hw->request_cd_eirq(msdc_eirq_cd, (void*)host); /* msdc_eirq_cd will not be used! */ + } + } + + if (hw->request_sdio_eirq) /* set to combo_sdio_request_eirq() for WIFI */ + hw->request_sdio_eirq(msdc_eirq_sdio, (void*)host); /* msdc_eirq_sdio() will be called when EIRQ */ + + if (hw->register_pm) {/* yes for sdio */ + if(hw->flags & MSDC_SYS_SUSPEND) { /* will not set for WIFI */ + //printk("MSDC_SYS_SUSPEND and register_pm both set\n"); + } + //mmc->pm_flags |= MMC_PM_IGNORE_PM_NOTIFY; /* pm not controlled by system but by client. */ /* --- by chhung */ + } + + platform_set_drvdata(pdev, mmc); + + ret = mmc_add_host(mmc); + if (ret) goto free_irq; + + /* Config card detection pin and enable interrupts */ + if (hw->flags & MSDC_CD_PIN_EN) { /* set for card */ + msdc_enable_cd_irq(host, 1); + } else { + msdc_enable_cd_irq(host, 0); + } + + return 0; + +free_irq: + free_irq(irq, host); +release: + platform_set_drvdata(pdev, NULL); + msdc_deinit_hw(host); + + tasklet_kill(&host->card_tasklet); + +/* if (mem) + release_mem_region(mem->start, mem->end - mem->start + 1); +*/ + mmc_free_host(mmc); + + return ret; +} + +/* 4 device share one driver, using "drvdata" to show difference */ +static int msdc_drv_remove(struct platform_device *pdev) +{ + struct mmc_host *mmc; + struct msdc_host *host; + struct resource *mem; + + + mmc = platform_get_drvdata(pdev); + BUG_ON(!mmc); + + host = mmc_priv(mmc); + BUG_ON(!host); + + //printk("removed !!!\n"); + + platform_set_drvdata(pdev, NULL); + mmc_remove_host(host->mmc); + msdc_deinit_hw(host); + + tasklet_kill(&host->card_tasklet); + free_irq(host->irq, host); + + dma_free_coherent(NULL, MAX_GPD_NUM * sizeof(gpd_t), host->dma.gpd, host->dma.gpd_addr); + dma_free_coherent(NULL, MAX_BD_NUM * sizeof(bd_t), host->dma.bd, host->dma.bd_addr); + + mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + + if (mem) + release_mem_region(mem->start, mem->end - mem->start + 1); + + mmc_free_host(host->mmc); + + return 0; +} + +static const struct of_device_id mt7620a_sdhci_match[] = { + { .compatible = "ralink,mt7620a-sdhci" }, + {}, +}; +MODULE_DEVICE_TABLE(of, rt288x_wdt_match); + +/* Fix me: Power Flow */ +static struct platform_driver mt_msdc_driver = { + .probe = msdc_drv_probe, + .remove = msdc_drv_remove, + .driver = { + .name = DRV_NAME, + .owner = THIS_MODULE, + .of_match_table = mt7620a_sdhci_match, + + }, +}; + +static int __init mt_msdc_init(void) +{ + int ret; +/* +++ chhung */ + unsigned int reg; + + mtk_sd_device.dev.platform_data = &msdc0_hw; + printk("MTK MSDC device init.\n"); + reg = sdr_read32((__iomem void *) 0xb0000060) & ~(0x3<<18); + reg |= 0x1 << 18; + sdr_write32((__iomem void *) 0xb0000060, reg); +/* end of +++ */ + ret = platform_driver_register(&mt_msdc_driver); + if (ret) { + printk(KERN_ERR DRV_NAME ": Can't register driver"); + return ret; + } + printk(KERN_INFO DRV_NAME ": MediaTek MT6575 MSDC Driver\n"); + + //msdc_debug_proc_init(); + return 0; +} + +static void __exit mt_msdc_exit(void) +{ + platform_driver_unregister(&mt_msdc_driver); +} + +module_init(mt_msdc_init); +module_exit(mt_msdc_exit); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("MediaTek MT6575 SD/MMC Card Driver"); +MODULE_AUTHOR("Infinity Chen "); + +EXPORT_SYMBOL(msdc_6575_host);