1060 lines
27 KiB
C
1060 lines
27 KiB
C
/*
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* Copyright (C) 2009
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* Guennadi Liakhovetski, DENX Software Engineering, <lg@denx.de>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <common.h>
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#include <init.h>
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#include <io.h>
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#include <mach/imx35-regs.h>
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#include <fb.h>
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#include <mach/imxfb.h>
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#include <malloc.h>
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#include <errno.h>
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#include <asm-generic/div64.h>
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#include <asm/mmu.h>
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#include <mach/imx-ipu-fb.h>
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#include <linux/clk.h>
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#include <linux/err.h>
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struct ipu_fb_info {
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void __iomem *regs;
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struct clk *clk;
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void (*enable)(int enable);
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enum disp_data_mapping disp_data_fmt;
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struct fb_info info;
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struct fb_info overlay;
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struct device_d *dev;
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unsigned int alpha;
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int disable_fractional_divider;
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};
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/* IPU DMA Controller channel definitions. */
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enum ipu_channel {
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IDMAC_IC_0 = 0, /* IC (encoding task) to memory */
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IDMAC_IC_1 = 1, /* IC (viewfinder task) to memory */
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IDMAC_ADC_0 = 1,
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IDMAC_IC_2 = 2,
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IDMAC_ADC_1 = 2,
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IDMAC_IC_3 = 3,
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IDMAC_IC_4 = 4,
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IDMAC_IC_5 = 5,
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IDMAC_IC_6 = 6,
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IDMAC_IC_7 = 7, /* IC (sensor data) to memory */
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IDMAC_IC_8 = 8,
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IDMAC_IC_9 = 9,
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IDMAC_IC_10 = 10,
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IDMAC_IC_11 = 11,
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IDMAC_IC_12 = 12,
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IDMAC_IC_13 = 13,
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IDMAC_SDC_0 = 14, /* Background synchronous display data */
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IDMAC_SDC_1 = 15, /* Foreground data (overlay) */
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IDMAC_SDC_2 = 16,
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IDMAC_SDC_3 = 17,
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IDMAC_ADC_2 = 18,
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IDMAC_ADC_3 = 19,
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IDMAC_ADC_4 = 20,
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IDMAC_ADC_5 = 21,
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IDMAC_ADC_6 = 22,
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IDMAC_ADC_7 = 23,
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IDMAC_PF_0 = 24,
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IDMAC_PF_1 = 25,
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IDMAC_PF_2 = 26,
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IDMAC_PF_3 = 27,
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IDMAC_PF_4 = 28,
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IDMAC_PF_5 = 29,
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IDMAC_PF_6 = 30,
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IDMAC_PF_7 = 31,
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};
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/* More formats can be copied from the Linux driver if needed */
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enum pixel_fmt {
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/* 2 bytes */
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IPU_PIX_FMT_RGB565,
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IPU_PIX_FMT_RGB666,
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IPU_PIX_FMT_BGR666,
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/* 3 bytes */
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IPU_PIX_FMT_RGB24,
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/* 3 bytes */
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IPU_PIX_FMT_RGB32,
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};
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struct di_mapping {
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uint32_t b0, b1, b2;
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};
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static const struct di_mapping di_mappings[] = {
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[IPU_DISP_DATA_MAPPING_RGB666] = { 0x0005000f, 0x000b000f, 0x0011000f },
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[IPU_DISP_DATA_MAPPING_RGB565] = { 0x0004003f, 0x000a000f, 0x000f003f },
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[IPU_DISP_DATA_MAPPING_RGB888] = { 0x00070000, 0x000f0000, 0x00170000 },
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};
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enum ipu_panel {
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IPU_PANEL_SHARP_TFT,
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IPU_PANEL_TFT,
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};
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/* IPU Common registers */
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#define IPU_CONF 0x00
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#define IPU_CHA_BUF0_RDY 0x04
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#define IPU_CHA_BUF1_RDY 0x08
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#define IPU_CHA_DB_MODE_SEL 0x0C
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#define IPU_CHA_CUR_BUF 0x10
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#define IPU_FS_PROC_FLOW 0x14
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#define IPU_FS_DISP_FLOW 0x18
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#define IPU_TASKS_STAT 0x1C
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#define IPU_IMA_ADDR 0x20
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#define IPU_IMA_DATA 0x24
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#define IPU_INT_CTRL_1 0x28
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#define IPU_INT_CTRL_2 0x2C
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#define IPU_INT_CTRL_3 0x30
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#define IPU_INT_CTRL_4 0x34
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#define IPU_INT_CTRL_5 0x38
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#define IPU_INT_STAT_1 0x3C
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#define IPU_INT_STAT_2 0x40
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#define IPU_INT_STAT_3 0x44
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#define IPU_INT_STAT_4 0x48
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#define IPU_INT_STAT_5 0x4C
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#define IPU_BRK_CTRL_1 0x50
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#define IPU_BRK_CTRL_2 0x54
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#define IPU_BRK_STAT 0x58
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#define IPU_DIAGB_CTRL 0x5C
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#define IPU_CONF_PXL_ENDIAN (1<<8)
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#define IPU_CONF_DU_EN (1<<7)
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#define IPU_CONF_DI_EN (1<<6)
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#define IPU_CONF_ADC_EN (1<<5)
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#define IPU_CONF_SDC_EN (1<<4)
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#define IPU_CONF_PF_EN (1<<3)
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#define IPU_CONF_ROT_EN (1<<2)
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#define IPU_CONF_IC_EN (1<<1)
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#define IPU_CONF_SCI_EN (1<<0)
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/* Image Converter Registers */
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#define IC_CONF 0x88
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#define IC_PRP_ENC_RSC 0x8C
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#define IC_PRP_VF_RSC 0x90
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#define IC_PP_RSC 0x94
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#define IC_CMBP_1 0x98
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#define IC_CMBP_2 0x9C
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#define PF_CONF 0xA0
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#define IDMAC_CONF 0xA4
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#define IDMAC_CHA_EN 0xA8
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#define IDMAC_CHA_PRI 0xAC
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#define IDMAC_CHA_BUSY 0xB0
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/* Image Converter Register bits */
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#define IC_CONF_PRPENC_EN 0x00000001
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#define IC_CONF_PRPENC_CSC1 0x00000002
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#define IC_CONF_PRPENC_ROT_EN 0x00000004
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#define IC_CONF_PRPVF_EN 0x00000100
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#define IC_CONF_PRPVF_CSC1 0x00000200
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#define IC_CONF_PRPVF_CSC2 0x00000400
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#define IC_CONF_PRPVF_CMB 0x00000800
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#define IC_CONF_PRPVF_ROT_EN 0x00001000
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#define IC_CONF_PP_EN 0x00010000
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#define IC_CONF_PP_CSC1 0x00020000
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#define IC_CONF_PP_CSC2 0x00040000
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#define IC_CONF_PP_CMB 0x00080000
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#define IC_CONF_PP_ROT_EN 0x00100000
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#define IC_CONF_IC_GLB_LOC_A 0x10000000
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#define IC_CONF_KEY_COLOR_EN 0x20000000
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#define IC_CONF_RWS_EN 0x40000000
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#define IC_CONF_CSI_MEM_WR_EN 0x80000000
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/* SDC Registers */
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#define SDC_COM_CONF 0xB4
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#define SDC_GW_CTRL 0xB8
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#define SDC_FG_POS 0xBC
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#define SDC_BG_POS 0xC0
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#define SDC_CUR_POS 0xC4
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#define SDC_PWM_CTRL 0xC8
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#define SDC_CUR_MAP 0xCC
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#define SDC_HOR_CONF 0xD0
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#define SDC_VER_CONF 0xD4
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#define SDC_SHARP_CONF_1 0xD8
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#define SDC_SHARP_CONF_2 0xDC
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/* Register bits */
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#define SDC_COM_TFT_COLOR 0x00000001UL
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#define SDC_COM_FG_EN 0x00000010UL
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#define SDC_COM_GWSEL 0x00000020UL
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#define SDC_COM_GLB_A 0x00000040UL
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#define SDC_COM_KEY_COLOR_G 0x00000080UL
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#define SDC_COM_BG_EN 0x00000200UL
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#define SDC_COM_SHARP 0x00001000UL
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#define SDC_V_SYNC_WIDTH_L 0x00000001UL
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/* Display Interface registers */
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#define DI_DISP_IF_CONF 0x0124
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#define DI_DISP_SIG_POL 0x0128
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#define DI_SER_DISP1_CONF 0x012C
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#define DI_SER_DISP2_CONF 0x0130
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#define DI_HSP_CLK_PER 0x0134
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#define DI_DISP0_TIME_CONF_1 0x0138
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#define DI_DISP0_TIME_CONF_2 0x013C
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#define DI_DISP0_TIME_CONF_3 0x0140
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#define DI_DISP1_TIME_CONF_1 0x0144
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#define DI_DISP1_TIME_CONF_2 0x0148
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#define DI_DISP1_TIME_CONF_3 0x014C
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#define DI_DISP2_TIME_CONF_1 0x0150
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#define DI_DISP2_TIME_CONF_2 0x0154
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#define DI_DISP2_TIME_CONF_3 0x0158
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#define DI_DISP3_TIME_CONF 0x015C
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#define DI_DISP0_DB0_MAP 0x0160
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#define DI_DISP0_DB1_MAP 0x0164
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#define DI_DISP0_DB2_MAP 0x0168
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#define DI_DISP0_CB0_MAP 0x016C
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#define DI_DISP0_CB1_MAP 0x0170
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#define DI_DISP0_CB2_MAP 0x0174
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#define DI_DISP1_DB0_MAP 0x0178
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#define DI_DISP1_DB1_MAP 0x017C
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#define DI_DISP1_DB2_MAP 0x0180
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#define DI_DISP1_CB0_MAP 0x0184
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#define DI_DISP1_CB1_MAP 0x0188
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#define DI_DISP1_CB2_MAP 0x018C
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#define DI_DISP2_DB0_MAP 0x0190
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#define DI_DISP2_DB1_MAP 0x0194
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#define DI_DISP2_DB2_MAP 0x0198
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#define DI_DISP2_CB0_MAP 0x019C
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#define DI_DISP2_CB1_MAP 0x01A0
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#define DI_DISP2_CB2_MAP 0x01A4
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#define DI_DISP3_B0_MAP 0x01A8
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#define DI_DISP3_B1_MAP 0x01AC
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#define DI_DISP3_B2_MAP 0x01B0
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#define DI_DISP_ACC_CC 0x01B4
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#define DI_DISP_LLA_CONF 0x01B8
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#define DI_DISP_LLA_DATA 0x01BC
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/* DI_DISP_SIG_POL bits */
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#define DI_D3_VSYNC_POL (1 << 28)
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#define DI_D3_HSYNC_POL (1 << 27)
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#define DI_D3_DRDY_SHARP_POL (1 << 26)
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#define DI_D3_CLK_POL (1 << 25)
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#define DI_D3_DATA_POL (1 << 24)
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/* DI_DISP_IF_CONF bits */
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#define DI_D3_CLK_IDLE (1 << 26)
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#define DI_D3_CLK_SEL (1 << 25)
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#define DI_D3_DATAMSK (1 << 24)
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struct imx_ipu_fb_rgb {
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struct fb_bitfield red;
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struct fb_bitfield green;
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struct fb_bitfield blue;
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struct fb_bitfield transp;
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int bits_per_pixel;
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};
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static struct imx_ipu_fb_rgb def_rgb_16 = {
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.red = {.offset = 11, .length = 5,},
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.green = {.offset = 5, .length = 6,},
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.blue = {.offset = 0, .length = 5,},
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.transp = {.offset = 0, .length = 0,},
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.bits_per_pixel = 16,
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};
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static struct imx_ipu_fb_rgb def_rgb_24 = {
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.red = {.offset = 16, .length = 8,},
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.green = {.offset = 8, .length = 8,},
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.blue = {.offset = 0, .length = 8,},
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.transp = {.offset = 0, .length = 0,},
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.bits_per_pixel = 24,
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};
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static struct imx_ipu_fb_rgb def_rgb_32 = {
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.red = {.offset = 16, .length = 8,},
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.green = {.offset = 8, .length = 8,},
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.blue = {.offset = 0, .length = 8,},
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.transp = {.offset = 24, .length = 8,},
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.bits_per_pixel = 32,
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};
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#define IPU_CPMEM_WORD(word, ofs, size) ((((word) * 160 + (ofs)) << 8) | (size))
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#define IPU_FIELD_XV IPU_CPMEM_WORD(0, 0, 10)
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#define IPU_FIELD_YV IPU_CPMEM_WORD(0, 10, 10)
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#define IPU_FIELD_XB IPU_CPMEM_WORD(0, 20, 12)
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#define IPU_FIELD_YB IPU_CPMEM_WORD(0, 32, 12)
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#define IPU_FIELD_SCE IPU_CPMEM_WORD(0, 44, 1)
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#define IPU_FIELD_RES1 IPU_CPMEM_WORD(0, 45, 1)
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#define IPU_FIELD_NSB IPU_CPMEM_WORD(0, 46, 1)
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#define IPU_FIELD_LNPB IPU_CPMEM_WORD(0, 47, 6)
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#define IPU_FIELD_SX IPU_CPMEM_WORD(0, 53, 10)
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#define IPU_FIELD_SY_L IPU_CPMEM_WORD(0, 63, 1)
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#define IPU_FIELD_SY_H IPU_CPMEM_WORD(0, 64, 9)
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#define IPU_FIELD_NS IPU_CPMEM_WORD(0, 73, 10)
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#define IPU_FIELD_SM IPU_CPMEM_WORD(0, 83, 10)
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#define IPU_FIELD_SDX_L IPU_CPMEM_WORD(0, 93, 3)
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#define IPU_FIELD_SDX_H IPU_CPMEM_WORD(0, 96, 2)
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#define IPU_FIELD_SDY IPU_CPMEM_WORD(0, 98, 5)
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#define IPU_FIELD_SDRX IPU_CPMEM_WORD(0, 103, 1)
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#define IPU_FIELD_SDRY IPU_CPMEM_WORD(0, 104, 1)
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#define IPU_FIELD_SDR1 IPU_CPMEM_WORD(0, 105, 1)
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#define IPU_FIELD_RES2 IPU_CPMEM_WORD(0, 106, 2)
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#define IPU_FIELD_FW IPU_CPMEM_WORD(0, 108, 12)
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#define IPU_FIELD_FH_L IPU_CPMEM_WORD(0, 120, 8)
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#define IPU_FIELD_FH_H IPU_CPMEM_WORD(0, 128, 4)
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#define IPU_FIELD_RES3 IPU_CPMEM_WORD(0, 132, 28)
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#define IPU_FIELD_EBA0 IPU_CPMEM_WORD(1, 0, 32)
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#define IPU_FIELD_EBA1 IPU_CPMEM_WORD(1, 32, 32)
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#define IPU_FIELD_BPP IPU_CPMEM_WORD(1, 64, 3)
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#define IPU_FIELD_SL IPU_CPMEM_WORD(1, 67, 14)
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#define IPU_FIELD_PFS IPU_CPMEM_WORD(1, 81, 3)
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#define IPU_FIELD_BAM IPU_CPMEM_WORD(1, 84, 3)
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#define IPU_FIELD_RES4 IPU_CPMEM_WORD(1, 87, 2)
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#define IPU_FIELD_NPB IPU_CPMEM_WORD(1, 89, 6)
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#define IPU_FIELD_RES5 IPU_CPMEM_WORD(1, 95, 1)
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#define IPU_FIELD_SAT IPU_CPMEM_WORD(1, 96, 2)
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#define IPU_FIELD_SCC IPU_CPMEM_WORD(1, 98, 1)
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#define IPU_FIELD_OFS0 IPU_CPMEM_WORD(1, 99, 5)
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#define IPU_FIELD_OFS1 IPU_CPMEM_WORD(1, 104, 5)
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#define IPU_FIELD_OFS2 IPU_CPMEM_WORD(1, 109, 5)
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#define IPU_FIELD_OFS3 IPU_CPMEM_WORD(1, 114, 5)
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#define IPU_FIELD_WID0 IPU_CPMEM_WORD(1, 119, 3)
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#define IPU_FIELD_WID1 IPU_CPMEM_WORD(1, 122, 3)
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#define IPU_FIELD_WID2 IPU_CPMEM_WORD(1, 125, 3)
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#define IPU_FIELD_WID3 IPU_CPMEM_WORD(1, 128, 3)
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#define IPU_FIELD_DEC_SEL IPU_CPMEM_WORD(1, 131, 1)
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#define IPU_FIELD_RES6 IPU_CPMEM_WORD(1, 132, 28)
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struct ipu_cpmem_word {
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u32 data[5];
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};
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struct ipu_ch_param {
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struct ipu_cpmem_word word[2];
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};
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void ipu_ch_param_write_field(struct ipu_ch_param __iomem *base, u32 wbs, u32 v)
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{
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u32 bit = (wbs >> 8) % 160;
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u32 size = wbs & 0xff;
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u32 word = (wbs >> 8) / 160;
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u32 i = bit / 32;
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u32 ofs = bit % 32;
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u32 mask = (1 << size) - 1;
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u32 val;
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pr_debug("%s %d %d %d\n", __func__, word, bit , size);
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val = readl(&base->word[word].data[i]);
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val &= ~(mask << ofs);
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val |= v << ofs;
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writel(val, &base->word[word].data[i]);
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if ((bit + size - 1) / 32 > i) {
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val = readl(&base->word[word].data[i + 1]);
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val &= ~(mask >> (ofs ? (32 - ofs) : 0));
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val |= v >> (ofs ? (32 - ofs) : 0);
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writel(val, &base->word[word].data[i + 1]);
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}
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}
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static inline u32 reg_read(struct ipu_fb_info *fbi, unsigned long reg)
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{
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u32 val;
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val = readl(fbi->regs + reg);
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debug("%s: %p 0x%08x\n", __func__, fbi->regs + reg, val);
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return val;
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}
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static inline void reg_write(struct ipu_fb_info *fbi, u32 value,
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unsigned long reg)
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{
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debug("%s: %p 0x%08x\n", __func__, fbi->regs + reg, value);
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writel(value, fbi->regs + reg);
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}
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/*
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* sdc_init_panel() - initialize a synchronous LCD panel.
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* @width: width of panel in pixels.
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* @height: height of panel in pixels.
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* @pixel_fmt: pixel format of buffer as FOURCC ASCII code.
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* @return: 0 on success or negative error code on failure.
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*/
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static int sdc_init_panel(struct fb_info *info, enum disp_data_mapping fmt)
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{
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struct ipu_fb_info *fbi = info->priv;
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struct fb_videomode *mode = info->mode;
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u32 reg, old_conf, div;
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enum ipu_panel panel = IPU_PANEL_TFT;
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unsigned long pixel_clk, rate;
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/* Init panel size and blanking periods */
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reg = ((mode->hsync_len - 1) << 26) |
|
|
((info->xres + mode->left_margin + mode->right_margin +
|
|
mode->hsync_len - 1) << 16);
|
|
reg_write(fbi, reg, SDC_HOR_CONF);
|
|
|
|
reg = ((mode->vsync_len - 1) << 26) | SDC_V_SYNC_WIDTH_L |
|
|
((info->yres + mode->upper_margin + mode->lower_margin +
|
|
mode->vsync_len - 1) << 16);
|
|
reg_write(fbi, reg, SDC_VER_CONF);
|
|
|
|
old_conf = reg_read(fbi, DI_DISP_SIG_POL) & 0xE0FFFFFF;
|
|
if (mode->sync & FB_SYNC_HOR_HIGH_ACT)
|
|
old_conf |= DI_D3_HSYNC_POL;
|
|
if (mode->sync & FB_SYNC_VERT_HIGH_ACT)
|
|
old_conf |= DI_D3_VSYNC_POL;
|
|
if (mode->sync & FB_SYNC_CLK_INVERT)
|
|
old_conf |= DI_D3_CLK_POL;
|
|
if (mode->sync & FB_SYNC_DATA_INVERT)
|
|
old_conf |= DI_D3_DATA_POL;
|
|
if (mode->sync & FB_SYNC_OE_ACT_HIGH)
|
|
old_conf |= DI_D3_DRDY_SHARP_POL;
|
|
reg_write(fbi, old_conf, DI_DISP_SIG_POL);
|
|
|
|
old_conf = reg_read(fbi, DI_DISP_IF_CONF) & 0x78FFFFFF;
|
|
if (mode->sync & FB_SYNC_CLK_IDLE_EN)
|
|
old_conf |= DI_D3_CLK_IDLE;
|
|
if (mode->sync & FB_SYNC_CLK_SEL_EN)
|
|
old_conf |= DI_D3_CLK_SEL;
|
|
if (mode->sync & FB_SYNC_SHARP_MODE)
|
|
panel = IPU_PANEL_SHARP_TFT;
|
|
reg_write(fbi, old_conf, DI_DISP_IF_CONF);
|
|
|
|
switch (panel) {
|
|
case IPU_PANEL_SHARP_TFT:
|
|
reg_write(fbi, 0x00FD0102L, SDC_SHARP_CONF_1);
|
|
reg_write(fbi, 0x00F500F4L, SDC_SHARP_CONF_2);
|
|
reg = reg_read(fbi, SDC_COM_CONF);
|
|
reg_write(fbi, reg | SDC_COM_SHARP | SDC_COM_TFT_COLOR,
|
|
SDC_COM_CONF);
|
|
break;
|
|
case IPU_PANEL_TFT:
|
|
reg = reg_read(fbi, SDC_COM_CONF) & ~SDC_COM_SHARP;
|
|
reg_write(fbi, reg | SDC_COM_TFT_COLOR, SDC_COM_CONF);
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* Calculate divider: fractional part is 4 bits so simply multiple by
|
|
* 2^4 to get fractional part, as long as we stay under ~250MHz and on
|
|
* i.MX31 it (HSP_CLK) is <= 178MHz. Currently 128.267MHz
|
|
*/
|
|
pixel_clk = PICOS2KHZ(mode->pixclock) * 1000UL;
|
|
rate = clk_get_rate(fbi->clk);
|
|
|
|
if (fbi->disable_fractional_divider)
|
|
div = DIV_ROUND_CLOSEST(rate, pixel_clk) * 16;
|
|
else
|
|
div = rate * 16 / pixel_clk;
|
|
|
|
if (div < 0x40) { /* Divider less than 4 */
|
|
dev_dbg(&info->dev,
|
|
"InitPanel() - Pixel clock divider less than 4\n");
|
|
div = 0x40;
|
|
}
|
|
|
|
dev_dbg(&info->dev, "pixel clk = %lu, divider %u.%u\n",
|
|
pixel_clk, div >> 4, (div & 0xf) * (1000 / 16));
|
|
|
|
/*
|
|
* DISP3_IF_CLK_DOWN_WR is half the divider value and 2 fraction bits
|
|
* fewer. Subtract 1 extra from DISP3_IF_CLK_DOWN_WR based on timing
|
|
* debug. DISP3_IF_CLK_UP_WR is 0
|
|
*/
|
|
reg_write(fbi, (((div / 8) - 1) << 22) | div, DI_DISP3_TIME_CONF);
|
|
|
|
reg_write(fbi, di_mappings[fmt].b0, DI_DISP3_B0_MAP);
|
|
reg_write(fbi, di_mappings[fmt].b1, DI_DISP3_B1_MAP);
|
|
reg_write(fbi, di_mappings[fmt].b2, DI_DISP3_B2_MAP);
|
|
reg_write(fbi, 0, DI_DISP_ACC_CC);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ipu_cpmem_set_format_rgb(struct ipu_ch_param *p, struct imx_ipu_fb_rgb *rgb)
|
|
{
|
|
int bpp = 0, npb = 0, ro, go, bo, to;
|
|
|
|
ro = rgb->bits_per_pixel - rgb->red.length - rgb->red.offset;
|
|
go = rgb->bits_per_pixel - rgb->green.length - rgb->green.offset;
|
|
bo = rgb->bits_per_pixel - rgb->blue.length - rgb->blue.offset;
|
|
to = rgb->bits_per_pixel - rgb->transp.length - rgb->transp.offset;
|
|
|
|
ipu_ch_param_write_field(p, IPU_FIELD_WID0, rgb->red.length - 1);
|
|
ipu_ch_param_write_field(p, IPU_FIELD_OFS0, ro);
|
|
ipu_ch_param_write_field(p, IPU_FIELD_WID1, rgb->green.length - 1);
|
|
ipu_ch_param_write_field(p, IPU_FIELD_OFS1, go);
|
|
ipu_ch_param_write_field(p, IPU_FIELD_WID2, rgb->blue.length - 1);
|
|
ipu_ch_param_write_field(p, IPU_FIELD_OFS2, bo);
|
|
|
|
if (rgb->transp.length) {
|
|
ipu_ch_param_write_field(p, IPU_FIELD_WID3, rgb->transp.length - 1);
|
|
ipu_ch_param_write_field(p, IPU_FIELD_OFS3, to);
|
|
} else {
|
|
ipu_ch_param_write_field(p, IPU_FIELD_WID3, 7);
|
|
ipu_ch_param_write_field(p, IPU_FIELD_OFS3, rgb->bits_per_pixel);
|
|
}
|
|
|
|
switch (rgb->bits_per_pixel) {
|
|
case 32:
|
|
bpp = 0;
|
|
npb = 7;
|
|
break;
|
|
case 24:
|
|
bpp = 1;
|
|
npb = 7;
|
|
break;
|
|
case 16:
|
|
bpp = 2;
|
|
npb = 15;
|
|
break;
|
|
case 8:
|
|
bpp = 3;
|
|
npb = 31;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
ipu_ch_param_write_field(p, IPU_FIELD_BPP, bpp);
|
|
ipu_ch_param_write_field(p, IPU_FIELD_PFS, 4);
|
|
ipu_ch_param_write_field(p, IPU_FIELD_NPB, npb);
|
|
ipu_ch_param_write_field(p, IPU_FIELD_SAT, 2);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void ipu_ch_param_set_size(struct ipu_ch_param *p,
|
|
u32 pixel_fmt, uint16_t width,
|
|
uint16_t height, uint16_t stride)
|
|
{
|
|
ipu_ch_param_write_field(p, IPU_FIELD_FW, width - 1);
|
|
ipu_ch_param_write_field(p, IPU_FIELD_FH_L, height - 1);
|
|
ipu_ch_param_write_field(p, IPU_FIELD_FH_H, (height - 1) >> 8);
|
|
ipu_ch_param_write_field(p, IPU_FIELD_SL, stride - 1);
|
|
|
|
/* See above, for further formats see the Linux driver */
|
|
switch (pixel_fmt) {
|
|
case IPU_PIX_FMT_RGB565:
|
|
ipu_cpmem_set_format_rgb(p, &def_rgb_16);
|
|
break;
|
|
case IPU_PIX_FMT_RGB24:
|
|
ipu_cpmem_set_format_rgb(p, &def_rgb_24);
|
|
break;
|
|
case IPU_PIX_FMT_RGB32:
|
|
ipu_cpmem_set_format_rgb(p, &def_rgb_32);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ipu_ch_param_write_field(p, IPU_FIELD_NSB, 1);
|
|
}
|
|
|
|
static void ipu_ch_param_set_buffer(struct ipu_ch_param *p, void *buf0, void *buf1)
|
|
{
|
|
ipu_ch_param_write_field(p, IPU_FIELD_EBA0, (u32)buf0);
|
|
ipu_ch_param_write_field(p, IPU_FIELD_EBA1, (u32)buf1);
|
|
}
|
|
|
|
static void ipu_write_param_mem(struct ipu_fb_info *fbi, u32 addr,
|
|
struct ipu_ch_param *p, u32 num_words)
|
|
{
|
|
u32 *data = (void *)p;
|
|
|
|
for (; num_words > 0; num_words--) {
|
|
reg_write(fbi, addr, IPU_IMA_ADDR);
|
|
reg_write(fbi, *data++, IPU_IMA_DATA);
|
|
addr++;
|
|
if ((addr & 0x7) == 5) {
|
|
addr &= ~0x7; /* set to word 0 */
|
|
addr += 8; /* increment to next row */
|
|
}
|
|
}
|
|
}
|
|
|
|
static u32 bpp_to_pixfmt(int bpp)
|
|
{
|
|
switch (bpp) {
|
|
case 16:
|
|
return IPU_PIX_FMT_RGB565;
|
|
case 24:
|
|
return IPU_PIX_FMT_RGB24;
|
|
case 32:
|
|
return IPU_PIX_FMT_RGB32;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static u32 dma_param_addr(enum ipu_channel channel)
|
|
{
|
|
/* Channel Parameter Memory */
|
|
return 0x10000 | (channel << 4);
|
|
}
|
|
|
|
static void ipu_init_channel_buffer(struct ipu_fb_info *fbi,
|
|
enum ipu_channel channel, void *fbmem)
|
|
{
|
|
struct ipu_ch_param p = {};
|
|
u32 reg;
|
|
u32 stride_bytes;
|
|
|
|
stride_bytes = fbi->info.xres * ((fbi->info.bits_per_pixel + 7) / 8);
|
|
stride_bytes = (stride_bytes + 3) & ~3;
|
|
|
|
/* Build parameter memory data for DMA channel */
|
|
ipu_ch_param_set_size(&p, bpp_to_pixfmt(fbi->info.bits_per_pixel),
|
|
fbi->info.xres, fbi->info.yres, stride_bytes);
|
|
|
|
ipu_ch_param_set_buffer(&p, fbmem, NULL);
|
|
|
|
ipu_write_param_mem(fbi, dma_param_addr(channel), &p, 10);
|
|
|
|
/* Disable double-buffering */
|
|
reg = reg_read(fbi, IPU_CHA_DB_MODE_SEL);
|
|
reg &= ~(1UL << channel);
|
|
reg_write(fbi, reg, IPU_CHA_DB_MODE_SEL);
|
|
}
|
|
|
|
static void ipu_channel_set_priority(struct ipu_fb_info *fbi,
|
|
enum ipu_channel channel, int prio)
|
|
{
|
|
u32 reg;
|
|
|
|
reg = reg_read(fbi, IDMAC_CHA_PRI);
|
|
|
|
if (prio)
|
|
reg |= 1UL << channel;
|
|
else
|
|
reg &= ~(1UL << channel);
|
|
|
|
reg_write(fbi, reg, IDMAC_CHA_PRI);
|
|
}
|
|
|
|
/*
|
|
* ipu_enable_channel() - enable an IPU channel.
|
|
* @channel: channel ID.
|
|
* @return: 0 on success or negative error code on failure.
|
|
*/
|
|
static int ipu_enable_channel(struct ipu_fb_info *fbi, enum ipu_channel channel)
|
|
{
|
|
u32 reg;
|
|
|
|
/* Reset to buffer 0 */
|
|
reg_write(fbi, 1UL << channel, IPU_CHA_CUR_BUF);
|
|
|
|
switch (channel) {
|
|
case IDMAC_SDC_0:
|
|
case IDMAC_SDC_1:
|
|
ipu_channel_set_priority(fbi, channel, 1);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
reg = reg_read(fbi, IDMAC_CHA_EN);
|
|
reg_write(fbi, reg | (1UL << channel), IDMAC_CHA_EN);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ipu_update_channel_buffer(struct ipu_fb_info *fbi,
|
|
enum ipu_channel channel, void *buf)
|
|
{
|
|
u32 reg;
|
|
|
|
reg = reg_read(fbi, IPU_CHA_BUF0_RDY);
|
|
if (reg & (1UL << channel))
|
|
return -EACCES;
|
|
|
|
/* 44.3.3.1.9 - Row Number 1 (WORD1, offset 0) */
|
|
reg_write(fbi, dma_param_addr(channel) + 0x0008UL, IPU_IMA_ADDR);
|
|
reg_write(fbi, (u32)buf, IPU_IMA_DATA);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int idmac_tx_submit(struct ipu_fb_info *fbi, enum ipu_channel channel,
|
|
void *buf)
|
|
{
|
|
int ret;
|
|
|
|
ipu_init_channel_buffer(fbi, channel, buf);
|
|
|
|
|
|
/* ipu_idmac.c::ipu_submit_channel_buffers() */
|
|
ret = ipu_update_channel_buffer(fbi, channel, buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* ipu_idmac.c::ipu_select_buffer() */
|
|
/* Mark buffer 0 as ready. */
|
|
reg_write(fbi, 1UL << channel, IPU_CHA_BUF0_RDY);
|
|
|
|
|
|
ret = ipu_enable_channel(fbi, channel);
|
|
return ret;
|
|
}
|
|
|
|
static void sdc_enable_channel(struct ipu_fb_info *fbi, void *fbmem,
|
|
enum ipu_channel channel)
|
|
{
|
|
int ret = 0;
|
|
u32 reg;
|
|
|
|
ret = idmac_tx_submit(fbi, channel, fbmem);
|
|
|
|
/* mx3fb.c::sdc_fb_init() */
|
|
if (ret >= 0) {
|
|
reg = reg_read(fbi, SDC_COM_CONF);
|
|
if (channel == IDMAC_SDC_1)
|
|
reg_write(fbi, reg | SDC_COM_FG_EN, SDC_COM_CONF);
|
|
else
|
|
reg_write(fbi, reg | SDC_COM_BG_EN, SDC_COM_CONF);
|
|
}
|
|
|
|
/*
|
|
* Attention! Without this mdelay the channel keeps generating
|
|
* interrupts. Next sdc_set_brightness() is going to be called
|
|
* from mx3fb_blank().
|
|
*/
|
|
mdelay(2);
|
|
}
|
|
|
|
/* References in this function refer to respective Linux kernel sources */
|
|
static void ipu_fb_enable(struct fb_info *info)
|
|
{
|
|
struct ipu_fb_info *fbi = info->priv;
|
|
struct fb_videomode *mode = info->mode;
|
|
u32 reg;
|
|
|
|
/* pcm037.c::mxc_board_init() */
|
|
|
|
/* ipu_idmac.c::ipu_probe() */
|
|
|
|
/* Start the clock */
|
|
reg = readl(MX35_CCM_BASE_ADDR + MX35_CCM_CGR1);
|
|
reg |= (3 << 18);
|
|
writel(reg, MX35_CCM_BASE_ADDR + MX35_CCM_CGR1);
|
|
|
|
/* ipu_idmac.c::ipu_idmac_init() */
|
|
|
|
/* Service request counter to maximum - shouldn't be needed */
|
|
reg_write(fbi, 0x00000070, IDMAC_CONF);
|
|
|
|
/* ipu_idmac.c::ipu_init_channel() */
|
|
|
|
/* Enable IPU sub modules */
|
|
reg = reg_read(fbi, IPU_CONF) | IPU_CONF_SDC_EN | IPU_CONF_DI_EN;
|
|
reg_write(fbi, reg, IPU_CONF);
|
|
|
|
/* mx3fb.c::init_fb_chan() */
|
|
|
|
/* set Display Interface clock period */
|
|
reg_write(fbi, 0x00100010L, DI_HSP_CLK_PER);
|
|
/* Might need to trigger HSP clock change - see 44.3.3.8.5 */
|
|
|
|
/* mx3fb.c::sdc_set_global_alpha() */
|
|
|
|
/* Use global - not per-pixel - Alpha-blending */
|
|
reg = reg_read(fbi, SDC_GW_CTRL) & 0x00FFFFFFL;
|
|
reg_write(fbi, reg | ((u32) 0xff << 24), SDC_GW_CTRL);
|
|
|
|
reg = reg_read(fbi, SDC_COM_CONF);
|
|
reg_write(fbi, reg | SDC_COM_GLB_A, SDC_COM_CONF);
|
|
|
|
/* mx3fb.c::sdc_set_color_key() */
|
|
|
|
/* Disable colour-keying for background */
|
|
reg = reg_read(fbi, SDC_COM_CONF) &
|
|
~(SDC_COM_KEY_COLOR_G);
|
|
reg_write(fbi, reg, SDC_COM_CONF);
|
|
|
|
sdc_init_panel(info, fbi->disp_data_fmt);
|
|
|
|
reg_write(fbi, (mode->left_margin << 16) | mode->upper_margin,
|
|
SDC_BG_POS);
|
|
|
|
sdc_enable_channel(fbi, info->screen_base, IDMAC_SDC_0);
|
|
|
|
/*
|
|
* Linux driver calls sdc_set_brightness() here again,
|
|
* once is enough for us
|
|
*/
|
|
if (fbi->enable)
|
|
fbi->enable(1);
|
|
}
|
|
|
|
static void ipu_fb_disable(struct fb_info *info)
|
|
{
|
|
struct ipu_fb_info *fbi = info->priv;
|
|
u32 reg;
|
|
|
|
if (fbi->enable)
|
|
fbi->enable(0);
|
|
|
|
reg = reg_read(fbi, SDC_COM_CONF);
|
|
reg &= ~SDC_COM_BG_EN;
|
|
reg_write(fbi, reg, SDC_COM_CONF);
|
|
}
|
|
|
|
static int ipu_fb_activate_var(struct fb_info *info)
|
|
{
|
|
#ifdef CONFIG_DRIVER_VIDEO_IMX_IPU_OVERLAY
|
|
struct ipu_fb_info *fbi = info->priv;
|
|
struct fb_info *overlay = &fbi->overlay;
|
|
|
|
/* overlay also needs to know the new values */
|
|
overlay->mode = info->mode;
|
|
overlay->xres = info->xres;
|
|
overlay->yres = info->yres;
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct fb_ops imxfb_ops = {
|
|
.fb_enable = ipu_fb_enable,
|
|
.fb_disable = ipu_fb_disable,
|
|
.fb_activate_var = ipu_fb_activate_var,
|
|
};
|
|
|
|
static void imxfb_init_info(struct fb_info *info, struct fb_videomode *mode,
|
|
int bpp)
|
|
{
|
|
struct imx_ipu_fb_rgb *rgb;
|
|
|
|
info->mode = mode;
|
|
info->xres = mode->xres;
|
|
info->yres = mode->yres;
|
|
info->bits_per_pixel = bpp;
|
|
|
|
switch (info->bits_per_pixel) {
|
|
case 32:
|
|
rgb = &def_rgb_32;
|
|
break;
|
|
case 24:
|
|
rgb = &def_rgb_24;
|
|
break;
|
|
case 16:
|
|
default:
|
|
rgb = &def_rgb_16;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Copy the RGB parameters for this display
|
|
* from the machine specific parameters.
|
|
*/
|
|
info->red = rgb->red;
|
|
info->green = rgb->green;
|
|
info->blue = rgb->blue;
|
|
info->transp = rgb->transp;
|
|
}
|
|
|
|
#ifdef CONFIG_DRIVER_VIDEO_IMX_IPU_OVERLAY
|
|
|
|
static void ipu_fb_overlay_enable_controller(struct fb_info *overlay)
|
|
{
|
|
struct ipu_fb_info *fbi = overlay->priv;
|
|
struct fb_videomode *mode = overlay->mode;
|
|
int reg;
|
|
|
|
sdc_init_panel(overlay, fbi->disp_data_fmt);
|
|
|
|
reg_write(fbi, (mode->left_margin << 16) | mode->upper_margin,
|
|
SDC_FG_POS);
|
|
|
|
reg = reg_read(fbi, SDC_COM_CONF);
|
|
reg_write(fbi, reg | SDC_COM_GWSEL, SDC_COM_CONF);
|
|
|
|
if (fbi->enable)
|
|
fbi->enable(1);
|
|
|
|
sdc_enable_channel(fbi, overlay->screen_base, IDMAC_SDC_1);
|
|
}
|
|
|
|
static void ipu_fb_overlay_disable_controller(struct fb_info *overlay)
|
|
{
|
|
struct ipu_fb_info *fbi = overlay->priv;
|
|
u32 reg;
|
|
|
|
if (fbi->enable)
|
|
fbi->enable(0);
|
|
|
|
/* Disable foreground and set graphic window to background */
|
|
reg = reg_read(fbi, SDC_COM_CONF);
|
|
reg &= ~(SDC_COM_FG_EN | SDC_COM_GWSEL);
|
|
reg_write(fbi, reg, SDC_COM_CONF);
|
|
}
|
|
|
|
static int ipu_fb_overlay_setcolreg(u_int regno, u_int red, u_int green,
|
|
u_int blue, u_int trans, struct fb_info *info)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static struct fb_ops ipu_fb_overlay_ops = {
|
|
.fb_setcolreg = ipu_fb_overlay_setcolreg,
|
|
.fb_enable = ipu_fb_overlay_enable_controller,
|
|
.fb_disable = ipu_fb_overlay_disable_controller,
|
|
};
|
|
|
|
static int sdc_alpha_set(struct param_d *param, void *priv)
|
|
{
|
|
struct fb_info *info = priv;
|
|
struct ipu_fb_info *fbi = info->priv;
|
|
unsigned int tmp;
|
|
|
|
if (fbi->alpha > 0xff)
|
|
fbi->alpha = 0xff;
|
|
|
|
tmp = reg_read(fbi, SDC_GW_CTRL) & 0x00FFFFFFL;
|
|
reg_write(fbi, tmp | ((u32) fbi->alpha << 24), SDC_GW_CTRL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sdc_fb_register_overlay(struct ipu_fb_info *fbi, void *fb)
|
|
{
|
|
struct fb_info *overlay;
|
|
const struct imx_ipu_fb_platform_data *pdata = fbi->dev->platform_data;
|
|
int ret;
|
|
|
|
overlay = &fbi->overlay;
|
|
overlay->priv = fbi;
|
|
overlay->fbops = &ipu_fb_overlay_ops;
|
|
|
|
imxfb_init_info(overlay, pdata->mode, pdata->bpp);
|
|
|
|
if (fb)
|
|
overlay->screen_base = fb;
|
|
else
|
|
overlay->screen_base = xzalloc(overlay->xres * overlay->yres *
|
|
(overlay->bits_per_pixel >> 3));
|
|
|
|
if (!overlay->screen_base)
|
|
return -ENOMEM;
|
|
|
|
overlay->screen_size = pdata->framebuffer_ovl_size;
|
|
|
|
sdc_enable_channel(fbi, overlay->screen_base, IDMAC_SDC_1);
|
|
|
|
ret = register_framebuffer(&fbi->overlay);
|
|
if (ret < 0) {
|
|
dev_err(fbi->dev, "failed to register framebuffer\n");
|
|
return ret;
|
|
}
|
|
|
|
dev_add_param_int(&overlay->dev, "alpha", sdc_alpha_set,
|
|
NULL, &fbi->alpha, "%u", overlay);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#endif
|
|
|
|
static int imxfb_probe(struct device_d *dev)
|
|
{
|
|
struct ipu_fb_info *fbi;
|
|
struct fb_info *info;
|
|
const struct imx_ipu_fb_platform_data *pdata = dev->platform_data;
|
|
int ret = 0;
|
|
|
|
if (!pdata)
|
|
return -ENODEV;
|
|
|
|
fbi = xzalloc(sizeof(*fbi));
|
|
info = &fbi->info;
|
|
|
|
fbi->clk = clk_get(dev, NULL);
|
|
if (IS_ERR(fbi->clk))
|
|
return PTR_ERR(fbi->clk);
|
|
|
|
fbi->regs = dev_request_mem_region(dev, 0);
|
|
fbi->dev = dev;
|
|
fbi->enable = pdata->enable;
|
|
fbi->disp_data_fmt = pdata->disp_data_fmt;
|
|
fbi->disable_fractional_divider = pdata->disable_fractional_divider;
|
|
info->priv = fbi;
|
|
info->fbops = &imxfb_ops;
|
|
info->modes.modes = pdata->mode;
|
|
info->modes.num_modes = pdata->num_modes;
|
|
|
|
imxfb_init_info(info, pdata->mode, pdata->bpp);
|
|
|
|
dev_info(dev, "i.MX Framebuffer driver\n");
|
|
|
|
fbi->info.screen_size = pdata->framebuffer_size;
|
|
if (!fbi->info.screen_size)
|
|
fbi->info.screen_size = info->xres * info->yres *
|
|
(info->bits_per_pixel >> 3);
|
|
/*
|
|
* Use a given frambuffer or reserve some
|
|
* memory for screen usage
|
|
*/
|
|
fbi->info.screen_base = pdata->framebuffer;
|
|
if (fbi->info.screen_base) {
|
|
remap_range(fbi->info.screen_base,
|
|
fbi->info.screen_size,
|
|
mmu_get_pte_uncached_flags());
|
|
} else {
|
|
fbi->info.screen_base = dma_alloc_coherent(fbi->info.screen_size);
|
|
if (!fbi->info.screen_base)
|
|
return -ENOMEM;
|
|
}
|
|
|
|
sdc_enable_channel(fbi, info->screen_base, IDMAC_SDC_0);
|
|
|
|
ret = register_framebuffer(&fbi->info);
|
|
if (ret < 0) {
|
|
dev_err(dev, "failed to register framebuffer\n");
|
|
return ret;
|
|
}
|
|
|
|
#ifdef CONFIG_DRIVER_VIDEO_IMX_IPU_OVERLAY
|
|
ret = sdc_fb_register_overlay(fbi, pdata->framebuffer_ovl);
|
|
#endif
|
|
return ret;
|
|
}
|
|
|
|
static struct driver_d imx3fb_driver = {
|
|
.name = "imx-ipu-fb",
|
|
.probe = imxfb_probe,
|
|
};
|
|
device_platform_driver(imx3fb_driver);
|
|
|
|
/**
|
|
* @file
|
|
* @brief Programming the video controller in the i.MX35 CPU
|
|
*/
|