[U-Boot] [PATCH 6/6] arm: exynos4: universal_C210: add display support
Minkyu Kang
promsoft at gmail.com
Sat Sep 15 10:45:40 CEST 2012
Dear Piotr,
On 13 September 2012 16:45, Piotr Wilczek <p.wilczek at samsung.com> wrote:
> This patch add support for display on Universal C210 board.
> Width of displayed logo must be not bigger than 480 pixel and
> is limited by width of the screen.
> Tizen logo size is 520x120 pixels should be reseized to be
> displayed corectly on Universal C210.
>
> Signed-off-by: Piotr Wilczek <p.wilczek at samsung.com>
> Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
> CC: Minkyu Kang <mk7.kang at samsung.com>
> ---
> board/samsung/universal_c210/universal.c | 225 +++++++++++++++++++++++++++---
> include/configs/s5pc210_universal.h | 13 ++
> 2 files changed, 220 insertions(+), 18 deletions(-)
>
> diff --git a/board/samsung/universal_c210/universal.c b/board/samsung/universal_c210/universal.c
> index 772ade5..da28f7a 100644
> --- a/board/samsung/universal_c210/universal.c
> +++ b/board/samsung/universal_c210/universal.c
>
> +static void init_pmic_lcd(void)
> +{
> + unsigned char val;
> + int ret = 0;
> +
> + struct pmic *p = get_pmic();
> +
> + if (pmic_probe(p))
> + return;
> +
> + /* LDO7 1.8V */
> + val = 0x02; /* (1800 - 1600) / 100; */
> + ret |= pmic_reg_write(p, MAX8998_REG_LDO7, val);
> +
> + /* LDO17 3.0V */
> + val = 0xe; /* (3000 - 1600) / 100; */
> + ret |= pmic_reg_write(p, MAX8998_REG_LDO17, val);
> +
> + /* Disable unneeded regulators */
> + /*
> + * ONOFF1
> + * Buck1 ON, Buck2 OFF, Buck3 ON, Buck4 ON
> + * LDO2 ON, LDO3 OFF, LDO4 OFF, LDO5 ON
> + */
> + val = 0xB9;
> + ret |= pmic_reg_write(p, MAX8998_REG_ONOFF1, val);
> +
> + /* ONOFF2
> + * LDO6 OFF, LDO7 ON, LDO8 OFF, LDO9 ON,
> + * LDO10 OFF, LDO11 OFF, LDO12 OFF, LDO13 OFF
> + */
> + val = 0x50;
> + ret |= pmic_reg_write(p, MAX8998_REG_ONOFF2, val);
> +
> + /* ONOFF3
> + * LDO14 OFF, LDO15 OFF, LGO16 OFF, LDO17 OFF
> + * EPWRHOLD OFF, EBATTMON OFF, ELBCNFG2 OFF, ELBCNFG1 OFF
> + */
> + val = 0x00;
> + ret |= pmic_reg_write(p, MAX8998_REG_ONOFF3, val);
> +
> + if (ret)
> + puts("LCD pmic initialisation error!\n");
> +}
> +
> +static void fimd_clk_set(void)
> +{
> + unsigned int cfg = 0;
> +
> + /* LCD0_BLK FIFO S/W reset */
> + cfg = readl(EXYNOS4_DISPLAY_CONTROL);
> + cfg |= EXYNOS_DISPLAYCONTROL_FIFORST_LBLK0;
> + writel(cfg, EXYNOS4_DISPLAY_CONTROL);
> +
> + cfg = 0;
> +
> + /* FIMD of LBLK0 Bypass Selection */
> + cfg = readl(EXYNOS4_DISPLAY_CONTROL);
> + cfg &= ~EXYNOS_DISPLAYCONTROL_FIFORST_LBLK0;
> + cfg |= EXYNOS_DISPLAYCONTROL_FIMDBYPASS_LBLK0;
> + writel(cfg, EXYNOS4_DISPLAY_CONTROL);
No..
We don't allow direct access.
And this function looks same with exynos4_set_system_display.
> +}
> +
> +static void lcd_cfg_gpio(void)
> +{
> + unsigned int i, f3_end = 4;
> +
> + for (i = 0; i < 8; i++) {
> + /* set GPF0,1,2[0:7] for RGB Interface and Data lines (32bit) */
> + s5p_gpio_cfg_pin(&gpio1->f0, i, GPIO_FUNC(2));
> + s5p_gpio_cfg_pin(&gpio1->f1, i, GPIO_FUNC(2));
> + s5p_gpio_cfg_pin(&gpio1->f2, i, GPIO_FUNC(2));
> + /* pull-up/down disable */
> + s5p_gpio_set_pull(&gpio1->f0, i, GPIO_PULL_NONE);
> + s5p_gpio_set_pull(&gpio1->f1, i, GPIO_PULL_NONE);
> + s5p_gpio_set_pull(&gpio1->f2, i, GPIO_PULL_NONE);
> +
> + /* drive strength to max (24bit) */
> + s5p_gpio_set_drv(&gpio1->f0, i, GPIO_DRV_4X);
> + s5p_gpio_set_rate(&gpio1->f0, i, GPIO_DRV_SLOW);
> + s5p_gpio_set_drv(&gpio1->f1, i, GPIO_DRV_4X);
> + s5p_gpio_set_rate(&gpio1->f1, i, GPIO_DRV_SLOW);
> + s5p_gpio_set_drv(&gpio1->f2, i, GPIO_DRV_4X);
> + s5p_gpio_set_rate(&gpio1->f0, i, GPIO_DRV_SLOW);
> + }
> +
> + for (i = 0; i < f3_end; i++) {
> + /* set GPF3[0:3] for RGB Interface and Data lines (32bit) */
> + s5p_gpio_cfg_pin(&gpio1->f3, i, GPIO_FUNC(2));
> + /* pull-up/down disable */
> + s5p_gpio_set_pull(&gpio1->f3, i, GPIO_PULL_NONE);
> + /* drive strength to max (24bit) */
> + s5p_gpio_set_drv(&gpio1->f3, i, GPIO_DRV_4X);
> + s5p_gpio_set_rate(&gpio1->f3, i, GPIO_DRV_SLOW);
> + }
> +
> + /* gpio pad configuration for LCD reset. */
> + s5p_gpio_cfg_pin(&gpio2->y4, 5, GPIO_OUTPUT);
> +
> + spi_init();
> +
> + return;
Please remove this return.
> +}
> +
> +static void reset_lcd(void)
> +{
> + s5p_gpio_set_value(&gpio2->y4, 5, 1);
> + udelay(10000);
> + s5p_gpio_set_value(&gpio2->y4, 5, 0);
> + udelay(10000);
> + s5p_gpio_set_value(&gpio2->y4, 5, 1);
> + udelay(100);
> +}
> +
> +static void lcd_power_on(void)
> +{
> + struct pmic *p = get_pmic();
> +
> + if (pmic_probe(p))
> + return;
> +
> + pmic_set_output(p, MAX8998_REG_ONOFF3, MAX8998_LDO17, LDO_ON);
> + pmic_set_output(p, MAX8998_REG_ONOFF2, MAX8998_LDO7, LDO_ON);
> +}
> +
> +vidinfo_t panel_info = {
> + .vl_freq = 60,
> + .vl_col = 480,
> + .vl_row = 800,
> + .vl_width = 480,
> + .vl_height = 800,
> + .vl_clkp = CONFIG_SYS_HIGH,
> + .vl_hsp = CONFIG_SYS_HIGH,
> + .vl_vsp = CONFIG_SYS_HIGH,
> + .vl_dp = CONFIG_SYS_HIGH,
> +
> + .vl_bpix = 5, /* Bits per pixel */
> +
> + /* LD9040 LCD Panel */
> + .vl_hspw = 2,
> + .vl_hbpd = 16,
> + .vl_hfpd = 16,
> +
> + .vl_vspw = 2,
> + .vl_vbpd = 8,
> + .vl_vfpd = 8,
> + .vl_cmd_allow_len = 0xf,
> +
> + .win_id = 0,
> + .cfg_gpio = lcd_cfg_gpio,
> + .backlight_on = NULL,
> + .lcd_power_on = lcd_power_on,
> + .reset_lcd = reset_lcd,
> + .dual_lcd_enabled = 0,
> +
> + .init_delay = 0,
> + .power_on_delay = 10000,
> + .reset_delay = 10000,
> + .interface_mode = FIMD_RGB_INTERFACE,
> + .mipi_enabled = 0,
> +};
> +
> +void init_panel_info(vidinfo_t *vid)
> +{
> + fimd_clk_set();
> +
> + vid->logo_on = 1;
> + vid->resolution = HD_RESOLUTION;
> + vid->rgb_mode = MODE_RGB_P;
> +
> +#ifdef CONFIG_TIZEN
> + get_tizen_logo_info(vid);
> +#endif
> +
> + /* for LD9040. */
> + vid->pclk_name = 1; /* MPLL */
> + vid->sclk_div = 1;
> +
> + vid->cfg_ldo = ld9040_cfg_ldo;
> + vid->enable_ldo = ld9040_enable_ldo;
> +
> + setenv("lcdinfo", "lcd=ld9040");
> +}
> +
> +int board_init(void)
> +{
> + gpio1 = (struct exynos4_gpio_part1 *) EXYNOS4_GPIO_PART1_BASE;
> + gpio2 = (struct exynos4_gpio_part2 *) EXYNOS4_GPIO_PART2_BASE;
> +
> + gd->bd->bi_arch_number = MACH_TYPE_UNIVERSAL_C210;
> + gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
> +
> +#if defined(CONFIG_PMIC)
> + pmic_init();
> +#endif
> +
> + init_pmic_lcd();
move this function into CONFIG_PMIC?
> +
> + check_hw_revision();
> + printf("HW Revision:\t0x%x\n", board_rev);
> +
> + return 0;
> +}
Thanks.
Minkyu Kang.
--
from. prom.
www.promsoft.net
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