diff options
Diffstat (limited to 'board/freescale/mx6q_sabresd/mx6q_sabresd.c')
| -rw-r--r-- | board/freescale/mx6q_sabresd/mx6q_sabresd.c | 153 |
1 files changed, 94 insertions, 59 deletions
diff --git a/board/freescale/mx6q_sabresd/mx6q_sabresd.c b/board/freescale/mx6q_sabresd/mx6q_sabresd.c index 7be4d26dff..1b898daa15 100644 --- a/board/freescale/mx6q_sabresd/mx6q_sabresd.c +++ b/board/freescale/mx6q_sabresd/mx6q_sabresd.c @@ -1108,7 +1108,7 @@ int board_mmc_init(bd_t *bis) #ifdef CONFIG_MXC_EPDC #ifdef CONFIG_SPLASH_SCREEN -int setup_splash_img() +int setup_splash_img(void) { #ifdef CONFIG_SPLASH_IS_IN_MMC int mmc_dev = get_mmc_env_devno(); @@ -1146,6 +1146,8 @@ int setup_splash_img() return (n == blk_cnt) ? 0 : -1; #endif + + return 0; } #endif @@ -1180,7 +1182,7 @@ struct epdc_timing_params panel_timings = { .num_ce = 1, }; -static void setup_epdc_power() +static void setup_epdc_power(void) { unsigned int reg; @@ -1212,66 +1214,13 @@ static void setup_epdc_power() writel(reg, GPIO2_BASE_ADDR + GPIO_GDIR); } -void epdc_power_on() -{ - unsigned int reg; - - /* Set EPD_PWR_CTL0 to high - enable EINK_VDD (3.15) */ - reg = readl(GPIO2_BASE_ADDR + GPIO_DR); - reg |= (1 << 20); - writel(reg, GPIO2_BASE_ADDR + GPIO_DR); - - /* Set PMIC Wakeup to high - enable Display power */ - reg = readl(GPIO3_BASE_ADDR + GPIO_DR); - reg |= (1 << 20); - writel(reg, GPIO3_BASE_ADDR + GPIO_DR); - - /* Wait for PWRGOOD == 1 */ - while (1) { - reg = readl(GPIO2_BASE_ADDR + GPIO_DR); - if (!(reg & (1 << 21))) - break; - - udelay(100); - } - - /* Enable VCOM */ - reg = readl(GPIO3_BASE_ADDR + GPIO_DR); - reg |= (1 << 17); - writel(reg, GPIO3_BASE_ADDR + GPIO_DR); - - reg = readl(GPIO3_BASE_ADDR + GPIO_DR); - - udelay(500); -} - -void epdc_power_off() -{ - unsigned int reg; - /* Set PMIC Wakeup to low - disable Display power */ - reg = readl(GPIO3_BASE_ADDR + GPIO_DR); - reg &= ~(1 << 20); - writel(reg, GPIO3_BASE_ADDR + GPIO_DR); - - /* Disable VCOM */ - reg = readl(GPIO3_BASE_ADDR + GPIO_DR); - reg &= ~(1 << 17); - writel(reg, GPIO3_BASE_ADDR + GPIO_DR); - - /* Set EPD_PWR_CTL0 to low - disable EINK_VDD (3.15) */ - reg = readl(GPIO2_BASE_ADDR + GPIO_DR); - reg &= ~(1 << 20); - writel(reg, GPIO2_BASE_ADDR + GPIO_DR); -} - -int setup_waveform_file() +int setup_waveform_file(void) { #ifdef CONFIG_WAVEFORM_FILE_IN_MMC int mmc_dev = get_mmc_env_devno(); ulong offset = CONFIG_WAVEFORM_FILE_OFFSET; ulong size = CONFIG_WAVEFORM_FILE_SIZE; ulong addr = CONFIG_WAVEFORM_BUF_ADDR; - char *s = NULL; struct mmc *mmc = find_mmc_device(mmc_dev); uint blk_start, blk_cnt, n; @@ -1298,10 +1247,8 @@ int setup_waveform_file() #endif } -static void setup_epdc() +static void epdc_enable_pins(void) { - unsigned int reg; - /* epdc iomux settings */ mxc_iomux_v3_setup_pad(MX6DL_PAD_EIM_A16__EPDC_SDDO_0); mxc_iomux_v3_setup_pad(MX6DL_PAD_EIM_DA10__EPDC_SDDO_1); @@ -1323,6 +1270,36 @@ static void setup_epdc() mxc_iomux_v3_setup_pad(MX6DL_PAD_EIM_DA4__EPDC_SDCE_0); mxc_iomux_v3_setup_pad(MX6DL_PAD_EIM_DA5__EPDC_SDCE_1); mxc_iomux_v3_setup_pad(MX6DL_PAD_EIM_DA6__EPDC_SDCE_2); +} + +static void epdc_disable_pins(void) +{ + /* Configure MUX settings for EPDC pins to GPIO */ + mxc_iomux_v3_setup_pad(MX6DL_PAD_EIM_A16__GPIO_2_22); + mxc_iomux_v3_setup_pad(MX6DL_PAD_EIM_DA10__GPIO_3_10); + mxc_iomux_v3_setup_pad(MX6DL_PAD_EIM_DA12__GPIO_3_12); + mxc_iomux_v3_setup_pad(MX6DL_PAD_EIM_DA11__GPIO_3_11); + mxc_iomux_v3_setup_pad(MX6DL_PAD_EIM_LBA__GPIO_2_27); + mxc_iomux_v3_setup_pad(MX6DL_PAD_EIM_EB2__GPIO_2_30); + mxc_iomux_v3_setup_pad(MX6DL_PAD_EIM_CS0__GPIO_2_23); + mxc_iomux_v3_setup_pad(MX6DL_PAD_EIM_RW__GPIO_2_26); + mxc_iomux_v3_setup_pad(MX6DL_PAD_EIM_A21__GPIO_2_17); + mxc_iomux_v3_setup_pad(MX6DL_PAD_EIM_A22__GPIO_2_16); + mxc_iomux_v3_setup_pad(MX6DL_PAD_EIM_A23__GPIO_6_6); + mxc_iomux_v3_setup_pad(MX6DL_PAD_EIM_A24__GPIO_5_4); + mxc_iomux_v3_setup_pad(MX6DL_PAD_EIM_D31__GPIO_3_31); + mxc_iomux_v3_setup_pad(MX6DL_PAD_EIM_D27__GPIO_3_27); + mxc_iomux_v3_setup_pad(MX6DL_PAD_EIM_DA1__GPIO_3_1); + mxc_iomux_v3_setup_pad(MX6DL_PAD_EIM_EB1__GPIO_2_29); + mxc_iomux_v3_setup_pad(MX6DL_PAD_EIM_DA2__GPIO_3_2); + mxc_iomux_v3_setup_pad(MX6DL_PAD_EIM_DA4__GPIO_3_4); + mxc_iomux_v3_setup_pad(MX6DL_PAD_EIM_DA5__GPIO_3_5); + mxc_iomux_v3_setup_pad(MX6DL_PAD_EIM_DA6__GPIO_3_6); +} + +static void setup_epdc(void) +{ + unsigned int reg; /*** epdc Maxim PMIC settings ***/ @@ -1385,6 +1362,64 @@ static void setup_epdc() /* Assign fb_base */ gd->fb_base = CONFIG_FB_BASE; } + +void epdc_power_on() +{ + unsigned int reg; + + /* Set EPD_PWR_CTL0 to high - enable EINK_VDD (3.15) */ + reg = readl(GPIO2_BASE_ADDR + GPIO_DR); + reg |= (1 << 20); + writel(reg, GPIO2_BASE_ADDR + GPIO_DR); + udelay(1000); + + /* Enable epdc signal pin */ + epdc_enable_pins(); + + /* Set PMIC Wakeup to high - enable Display power */ + reg = readl(GPIO3_BASE_ADDR + GPIO_DR); + reg |= (1 << 20); + writel(reg, GPIO3_BASE_ADDR + GPIO_DR); + + /* Wait for PWRGOOD == 1 */ + while (1) { + reg = readl(GPIO2_BASE_ADDR + GPIO_DR); + if (!(reg & (1 << 21))) + break; + + udelay(100); + } + + /* Enable VCOM */ + reg = readl(GPIO3_BASE_ADDR + GPIO_DR); + reg |= (1 << 17); + writel(reg, GPIO3_BASE_ADDR + GPIO_DR); + + reg = readl(GPIO3_BASE_ADDR + GPIO_DR); + + udelay(500); +} + +void epdc_power_off() +{ + unsigned int reg; + /* Set PMIC Wakeup to low - disable Display power */ + reg = readl(GPIO3_BASE_ADDR + GPIO_DR); + reg &= ~(1 << 20); + writel(reg, GPIO3_BASE_ADDR + GPIO_DR); + + /* Disable VCOM */ + reg = readl(GPIO3_BASE_ADDR + GPIO_DR); + reg &= ~(1 << 17); + writel(reg, GPIO3_BASE_ADDR + GPIO_DR); + + epdc_disable_pins(); + + /* Set EPD_PWR_CTL0 to low - disable EINK_VDD (3.15) */ + reg = readl(GPIO2_BASE_ADDR + GPIO_DR); + reg &= ~(1 << 20); + writel(reg, GPIO2_BASE_ADDR + GPIO_DR); +} #endif /* For DDR mode operation, provide target delay parameter for each SD port. |