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powerpc/t1040qds: Add Video - HDMI support 

T1040 has internal display interface unit (DIU) for driving video.
T1040QDS supports video mode via
-LCD using TI enconder
-HDMI type interface via HDMI encoder

Chrontel, CH7301C encoder which is I2C programmable is used as
HDMI connector on T1040QDS.
This patch add support to
-enable Video interface for T1040QDS
-route qixis multiplexing to enable DIU-HDMI interface on board
-program DIU pixel clock gerenartor for T1040
-program HDMI encoder via I2C on board

Signed-off-by: Priyanka Jain <Priyanka.Jain@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
This commit is contained in:
Priyanka Jain 2014-02-26 16:11:53 +05:30 committed by York Sun
parent bf4699db85
commit 337b0c52b3
5 changed files with 255 additions and 1 deletions
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1
board/freescale/t1040qds/Makefile
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@ -10,3 +10,4 @@ obj-$(CONFIG_PCI) += pci.o
obj-y += law.o
obj-y += tlb.o
obj-y += eth.o
obj-y += diu.o

215
board/freescale/t1040qds/diu.c Normal file
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@ -0,0 +1,215 @@
/*
* Copyright 2014 Freescale Semiconductor, Inc.
* Author: Priyanka Jain <Priyanka.Jain@freescale.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <command.h>
#include <linux/ctype.h>
#include <asm/io.h>
#include <stdio_dev.h>
#include <video_fb.h>
#include <fsl_diu_fb.h>
#include "../common/qixis.h"
#include "t1040qds.h"
#include "t1040qds_qixis.h"
#include <i2c.h>
#define I2C_DVI_INPUT_DATA_FORMAT_REG 0x1F
#define I2C_DVI_PLL_CHARGE_CNTL_REG 0x33
#define I2C_DVI_PLL_DIVIDER_REG 0x34
#define I2C_DVI_PLL_SUPPLY_CNTL_REG 0x35
#define I2C_DVI_PLL_FILTER_REG 0x36
#define I2C_DVI_TEST_PATTERN_REG 0x48
#define I2C_DVI_POWER_MGMT_REG 0x49
#define I2C_DVI_LOCK_STATE_REG 0x4D
#define I2C_DVI_SYNC_POLARITY_REG 0x56
/*
* Set VSYNC/HSYNC to active high. This is polarity of sync signals
* from DIU->DVI. The DIU default is active igh, so DVI is set to
* active high.
*/
#define I2C_DVI_INPUT_DATA_FORMAT_VAL 0x98
#define I2C_DVI_PLL_CHARGE_CNTL_HIGH_SPEED_VAL 0x06
#define I2C_DVI_PLL_DIVIDER_HIGH_SPEED_VAL 0x26
#define I2C_DVI_PLL_FILTER_HIGH_SPEED_VAL 0xA0
#define I2C_DVI_PLL_CHARGE_CNTL_LOW_SPEED_VAL 0x08
#define I2C_DVI_PLL_DIVIDER_LOW_SPEED_VAL 0x16
#define I2C_DVI_PLL_FILTER_LOW_SPEED_VAL 0x60
/* Clear test pattern */
#define I2C_DVI_TEST_PATTERN_VAL 0x18
/* Exit Power-down mode */
#define I2C_DVI_POWER_MGMT_VAL 0xC0
/* Monitor polarity is handled via DVI Sync Polarity Register */
#define I2C_DVI_SYNC_POLARITY_VAL 0x00
/*
* DIU Area Descriptor
*
* Note that we need to byte-swap the value before it's written to the AD
* register. So even though the registers don't look like they're in the same
* bit positions as they are on the MPC8610, the same value is written to the
* AD register on the MPC8610 and on the P1022.
*/
#define AD_BYTE_F 0x10000000
#define AD_ALPHA_C_SHIFT 25
#define AD_BLUE_C_SHIFT 23
#define AD_GREEN_C_SHIFT 21
#define AD_RED_C_SHIFT 19
#define AD_PIXEL_S_SHIFT 16
#define AD_COMP_3_SHIFT 12
#define AD_COMP_2_SHIFT 8
#define AD_COMP_1_SHIFT 4
#define AD_COMP_0_SHIFT 0
/* Programming of HDMI Chrontel CH7301 connector */
int diu_set_dvi_encoder(unsigned int pixclock)
{
int ret;
u8 temp;
select_i2c_ch_pca9547(I2C_MUX_CH_DIU);
temp = I2C_DVI_TEST_PATTERN_VAL;
ret = i2c_write(CONFIG_SYS_I2C_DVI_ADDR, I2C_DVI_TEST_PATTERN_REG, 1,
&temp, 1);
if (ret) {
puts("I2C: failed to select proper dvi test pattern\n");
return ret;
}
temp = I2C_DVI_INPUT_DATA_FORMAT_VAL;
ret = i2c_write(CONFIG_SYS_I2C_DVI_ADDR, I2C_DVI_INPUT_DATA_FORMAT_REG,
1, &temp, 1);
if (ret) {
puts("I2C: failed to select dvi input data format\n");
return ret;
}
/* Set Sync polarity register */
temp = I2C_DVI_SYNC_POLARITY_VAL;
ret = i2c_write(CONFIG_SYS_I2C_DVI_ADDR, I2C_DVI_SYNC_POLARITY_REG, 1,
&temp, 1);
if (ret) {
puts("I2C: failed to select dvi syc polarity\n");
return ret;
}
/* Set PLL registers based on pixel clock rate*/
if (pixclock > 65000000) {
temp = I2C_DVI_PLL_CHARGE_CNTL_HIGH_SPEED_VAL;
ret = i2c_write(CONFIG_SYS_I2C_DVI_ADDR,
I2C_DVI_PLL_CHARGE_CNTL_REG, 1, &temp, 1);
if (ret) {
puts("I2C: failed to select dvi pll charge_cntl\n");
return ret;
}
temp = I2C_DVI_PLL_DIVIDER_HIGH_SPEED_VAL;
ret = i2c_write(CONFIG_SYS_I2C_DVI_ADDR,
I2C_DVI_PLL_DIVIDER_REG, 1, &temp, 1);
if (ret) {
puts("I2C: failed to select dvi pll divider\n");
return ret;
}
temp = I2C_DVI_PLL_FILTER_HIGH_SPEED_VAL;
ret = i2c_write(CONFIG_SYS_I2C_DVI_ADDR,
I2C_DVI_PLL_FILTER_REG, 1, &temp, 1);
if (ret) {
puts("I2C: failed to select dvi pll filter\n");
return ret;
}
} else {
temp = I2C_DVI_PLL_CHARGE_CNTL_LOW_SPEED_VAL;
ret = i2c_write(CONFIG_SYS_I2C_DVI_ADDR,
I2C_DVI_PLL_CHARGE_CNTL_REG, 1, &temp, 1);
if (ret) {
puts("I2C: failed to select dvi pll charge_cntl\n");
return ret;
}
temp = I2C_DVI_PLL_DIVIDER_LOW_SPEED_VAL;
ret = i2c_write(CONFIG_SYS_I2C_DVI_ADDR,
I2C_DVI_PLL_DIVIDER_REG, 1, &temp, 1);
if (ret) {
puts("I2C: failed to select dvi pll divider\n");
return ret;
}
temp = I2C_DVI_PLL_FILTER_LOW_SPEED_VAL;
ret = i2c_write(CONFIG_SYS_I2C_DVI_ADDR,
I2C_DVI_PLL_FILTER_REG, 1, &temp, 1);
if (ret) {
puts("I2C: failed to select dvi pll filter\n");
return ret;
}
}
temp = I2C_DVI_POWER_MGMT_VAL;
ret = i2c_write(CONFIG_SYS_I2C_DVI_ADDR, I2C_DVI_POWER_MGMT_REG, 1,
&temp, 1);
if (ret) {
puts("I2C: failed to select dvi power mgmt\n");
return ret;
}
udelay(500);
select_i2c_ch_pca9547(I2C_MUX_CH_DEFAULT);
return 0;
}
void diu_set_pixel_clock(unsigned int pixclock)
{
unsigned long speed_ccb, temp;
u32 pixval;
int ret = 0;
speed_ccb = get_bus_freq(0);
temp = 1000000000 / pixclock;
temp *= 1000;
pixval = speed_ccb / temp;
/* Program HDMI encoder */
ret = diu_set_dvi_encoder(temp);
if (ret) {
puts("Failed to set DVI encoder\n");
return;
}
/* Program pixel clock */
out_be32((unsigned *)CONFIG_SYS_FSL_SCFG_PIXCLK_ADDR,
((pixval << PXCK_BITS_START) & PXCK_MASK));
/* enable clock*/
out_be32((unsigned *)CONFIG_SYS_FSL_SCFG_PIXCLK_ADDR, PXCKEN_MASK |
((pixval << PXCK_BITS_START) & PXCK_MASK));
}
int platform_diu_init(unsigned int xres, unsigned int yres, const char *port)
{
u32 pixel_format;
u8 sw;
/*Route I2C4 to DIU system as HSYNC/VSYNC*/
sw = QIXIS_READ(brdcfg[5]);
QIXIS_WRITE(brdcfg[5],
((sw & ~(BRDCFG5_IMX_MASK)) | (BRDCFG5_IMX_DIU)));
/*Configure Display ouput port as HDMI*/
sw = QIXIS_READ(brdcfg[15]);
QIXIS_WRITE(brdcfg[15],
((sw & ~(BRDCFG15_LCDPD_MASK | BRDCFG15_DIUSEL_MASK))
| (BRDCFG15_LCDPD_ENABLED | BRDCFG15_DIUSEL_HDMI)));
pixel_format = cpu_to_le32(AD_BYTE_F | (3 << AD_ALPHA_C_SHIFT) |
(0 << AD_BLUE_C_SHIFT) | (1 << AD_GREEN_C_SHIFT) |
(2 << AD_RED_C_SHIFT) | (8 << AD_COMP_3_SHIFT) |
(8 << AD_COMP_2_SHIFT) | (8 << AD_COMP_1_SHIFT) |
(8 << AD_COMP_0_SHIFT) | (3 << AD_PIXEL_S_SHIFT));
printf("DIU: Switching to monitor @ %ux%u\n", xres, yres);
return fsl_diu_init(xres, yres, pixel_format, 0);
}

1
board/freescale/t1040qds/t1040qds.h
View File

@ -9,5 +9,6 @@
void fdt_fixup_board_enet(void *blob);
void pci_of_setup(void *blob, bd_t *bd);
int select_i2c_ch_pca9547(u8 ch);
#endif

12
board/freescale/t1040qds/t1040qds_qixis.h
View File

@ -13,6 +13,18 @@
#define BRDCFG4_EMISEL_MASK 0xE0
#define BRDCFG4_EMISEL_SHIFT 5
/* BRDCFG5[0:1] controls routing and use of I2C3 & I2C4 ports*/
#define BRDCFG5_IMX_MASK 0xC0
#define BRDCFG5_IMX_DIU 0x80
/* BRDCFG15[3] controls LCD Panel Powerdown*/
#define BRDCFG15_LCDPD_MASK 0x10
#define BRDCFG15_LCDPD_ENABLED 0x00
/* BRDCFG15[6:7] controls DIU MUX selction*/
#define BRDCFG15_DIUSEL_MASK 0x03
#define BRDCFG15_DIUSEL_HDMI 0x00
/* SYSCLK */
#define QIXIS_SYSCLK_66 0x0
#define QIXIS_SYSCLK_83 0x1

27
include/configs/T1040QDS.h
View File

@ -375,7 +375,7 @@ unsigned long get_board_ddr_clk(void);
#define CONFIG_SYS_INIT_SP_OFFSET CONFIG_SYS_GBL_DATA_OFFSET
#define CONFIG_SYS_MONITOR_LEN (512 * 1024)
#define CONFIG_SYS_MALLOC_LEN (4 * 1024 * 1024)
#define CONFIG_SYS_MALLOC_LEN (10 * 1024 * 1024)
/* Serial Port - controlled on board with jumper J8
* open - index 2
@ -401,6 +401,25 @@ unsigned long get_board_ddr_clk(void);
#define CONFIG_SYS_HUSH_PARSER
#define CONFIG_SYS_PROMPT_HUSH_PS2 "> "
/* Video */
#define CONFIG_FSL_DIU_FB
#ifdef CONFIG_FSL_DIU_FB
#define CONFIG_SYS_DIU_ADDR (CONFIG_SYS_CCSRBAR + 0x180000)
#define CONFIG_VIDEO
#define CONFIG_CMD_BMP
#define CONFIG_CFB_CONSOLE
#define CONFIG_VIDEO_SW_CURSOR
#define CONFIG_VGA_AS_SINGLE_DEVICE
#define CONFIG_VIDEO_LOGO
#define CONFIG_VIDEO_BMP_LOGO
#define CONFIG_CFI_FLASH_USE_WEAK_ACCESSORS
/*
* With CONFIG_CFI_FLASH_USE_WEAK_ACCESSORS, flash I/O is really slow, so
* disable empty flash sector detection, which is I/O-intensive.
*/
#undef CONFIG_SYS_FLASH_EMPTY_INFO
#endif
/* pass open firmware flat tree */
#define CONFIG_OF_LIBFDT
#define CONFIG_OF_BOARD_SETUP
@ -426,6 +445,11 @@ unsigned long get_board_ddr_clk(void);
/* I2C bus multiplexer */
#define I2C_MUX_CH_DEFAULT 0x8
#define I2C_MUX_CH_DIU 0xC
/* LDI/DVI Encoder for display */
#define CONFIG_SYS_I2C_LDI_ADDR 0x38
#define CONFIG_SYS_I2C_DVI_ADDR 0x75
/*
* RTC configuration
@ -703,6 +727,7 @@ unsigned long get_board_ddr_clk(void);
"bank_intlv=cs0_cs1;" \
"usb1:dr_mode=host,phy_type=" __stringify(__USB_PHY_TYPE) "\0"\
"netdev=eth0\0" \
"video-mode=fslfb:1024x768-32@60,monitor=dvi\0" \
"uboot=" __stringify(CONFIG_UBOOTPATH) "\0" \
"ubootaddr=" __stringify(CONFIG_SYS_TEXT_BASE) "\0" \
"tftpflash=tftpboot $loadaddr $uboot && " \