This adds support for the 7" WVGA produced by Future Eletronics and make it dynamically detect if it is connected or not based on the touchscreen controller.
Signed-off-by: Otavio Salvador otavio@ossystems.com.br --- Changes in v2: None
board/wandboard/wandboard.c | 240 +++++++++++++++++++++++++++++++++++++++----- include/configs/wandboard.h | 35 ++++++- 2 files changed, 251 insertions(+), 24 deletions(-)
diff --git a/board/wandboard/wandboard.c b/board/wandboard/wandboard.c index 0043bc6..a4ae083 100644 --- a/board/wandboard/wandboard.c +++ b/board/wandboard/wandboard.c @@ -15,6 +15,7 @@ #include <asm/arch/sys_proto.h> #include <asm/gpio.h> #include <asm/imx-common/iomux-v3.h> +#include <asm/imx-common/mxc_i2c.h> #include <asm/imx-common/boot_mode.h> #include <asm/io.h> #include <asm/sizes.h> @@ -25,6 +26,7 @@ #include <miiphy.h> #include <netdev.h> #include <linux/fb.h> +#include <i2c.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -39,6 +41,10 @@ DECLARE_GLOBAL_DATA_PTR; #define ENET_PAD_CTRL (PAD_CTL_PUS_100K_UP | \ PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
+#define I2C_PAD_CTRL (PAD_CTL_PUS_100K_UP | \ + PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS | \ + PAD_CTL_ODE | PAD_CTL_SRE_FAST) + #define USDHC1_CD_GPIO IMX_GPIO_NR(1, 2) #define USDHC3_CD_GPIO IMX_GPIO_NR(3, 9) #define ETH_PHY_RESET IMX_GPIO_NR(3, 29) @@ -208,50 +214,236 @@ int board_phy_config(struct phy_device *phydev) }
#if defined(CONFIG_VIDEO_IPUV3) -static struct fb_videomode const hdmi = { - .name = "HDMI", - .refresh = 60, - .xres = 1024, - .yres = 768, - .pixclock = 15385, - .left_margin = 220, - .right_margin = 40, - .upper_margin = 21, - .lower_margin = 7, - .hsync_len = 60, - .vsync_len = 10, - .sync = FB_SYNC_EXT, - .vmode = FB_VMODE_NONINTERLACED +struct i2c_pads_info i2c_pad_info = { + .scl = { + .i2c_mode = MX6_PAD_KEY_COL3__I2C2_SCL + | MUX_PAD_CTRL(I2C_PAD_CTRL), + .gpio_mode = MX6_PAD_KEY_COL3__GPIO_4_12 + | MUX_PAD_CTRL(I2C_PAD_CTRL), + .gp = IMX_GPIO_NR(4, 12) + }, + .sda = { + .i2c_mode = MX6_PAD_KEY_ROW3__I2C2_SDA + | MUX_PAD_CTRL(I2C_PAD_CTRL), + .gpio_mode = MX6_PAD_KEY_ROW3__GPIO_4_13 + | MUX_PAD_CTRL(I2C_PAD_CTRL), + .gp = IMX_GPIO_NR(4, 13) + } };
-int board_video_skip(void) -{ - int ret; +static iomux_v3_cfg_t const fwadapt_7wvga_pads[] = { + MX6_PAD_DI0_DISP_CLK__IPU1_DI0_DISP_CLK, + MX6_PAD_DI0_PIN2__IPU1_DI0_PIN2, /* HSync */ + MX6_PAD_DI0_PIN3__IPU1_DI0_PIN3, /* VSync */ + MX6_PAD_DI0_PIN4__IPU1_DI0_PIN4 + | MUX_PAD_CTRL(PAD_CTL_DSE_120ohm), /* Contrast */ + MX6_PAD_DI0_PIN15__IPU1_DI0_PIN15, /* DISP0_DRDY */ + + MX6_PAD_DISP0_DAT0__IPU1_DISP0_DAT_0, + MX6_PAD_DISP0_DAT1__IPU1_DISP0_DAT_1, + MX6_PAD_DISP0_DAT2__IPU1_DISP0_DAT_2, + MX6_PAD_DISP0_DAT3__IPU1_DISP0_DAT_3, + MX6_PAD_DISP0_DAT4__IPU1_DISP0_DAT_4, + MX6_PAD_DISP0_DAT5__IPU1_DISP0_DAT_5, + MX6_PAD_DISP0_DAT6__IPU1_DISP0_DAT_6, + MX6_PAD_DISP0_DAT7__IPU1_DISP0_DAT_7, + MX6_PAD_DISP0_DAT8__IPU1_DISP0_DAT_8, + MX6_PAD_DISP0_DAT9__IPU1_DISP0_DAT_9, + MX6_PAD_DISP0_DAT10__IPU1_DISP0_DAT_10, + MX6_PAD_DISP0_DAT11__IPU1_DISP0_DAT_11, + MX6_PAD_DISP0_DAT12__IPU1_DISP0_DAT_12, + MX6_PAD_DISP0_DAT13__IPU1_DISP0_DAT_13, + MX6_PAD_DISP0_DAT14__IPU1_DISP0_DAT_14, + MX6_PAD_DISP0_DAT15__IPU1_DISP0_DAT_15, + MX6_PAD_DISP0_DAT16__IPU1_DISP0_DAT_16, + MX6_PAD_DISP0_DAT17__IPU1_DISP0_DAT_17, + + MX6_PAD_SD4_DAT2__GPIO_2_10 + | MUX_PAD_CTRL(NO_PAD_CTRL), /* DISP0_BKLEN */ + MX6_PAD_SD4_DAT3__GPIO_2_11 + | MUX_PAD_CTRL(NO_PAD_CTRL), /* DISP0_VDDEN */ +};
- ret = ipuv3_fb_init(&hdmi, 0, IPU_PIX_FMT_RGB24); +struct display_info_t { + int bus; + int addr; + int pixfmt; + int (*detect)(struct display_info_t const *dev); + void (*enable)(struct display_info_t const *dev); + struct fb_videomode mode; +};
- if (ret) { - printf("HDMI cannot be configured: %d\n", ret); - return ret; - } +static int detect_hdmi(struct display_info_t const *dev) +{ + struct hdmi_regs *hdmi = (struct hdmi_regs *)HDMI_ARB_BASE_ADDR; + return readb(&hdmi->phy_stat0) & HDMI_DVI_STAT; +}
+static void do_enable_hdmi(struct display_info_t const *dev) +{ imx_enable_hdmi_phy(); +}
- return ret; +static int detect_i2c(struct display_info_t const *dev) +{ + return ((0 == i2c_set_bus_num(dev->bus)) && + (0 == i2c_probe(dev->addr))); +} + +static void enable_fwadapt_7wvga(struct display_info_t const *dev) +{ + imx_iomux_v3_setup_multiple_pads( + fwadapt_7wvga_pads, + ARRAY_SIZE(fwadapt_7wvga_pads)); + + gpio_direction_output(IMX_GPIO_NR(2, 10), 1); + gpio_direction_output(IMX_GPIO_NR(2, 11), 1); +} + +static struct display_info_t const displays[] = {{ + .bus = -1, + .addr = 0, + .pixfmt = IPU_PIX_FMT_RGB24, + .detect = detect_hdmi, + .enable = do_enable_hdmi, + .mode = { + .name = "HDMI", + .refresh = 60, + .xres = 1024, + .yres = 768, + .pixclock = 15385, + .left_margin = 220, + .right_margin = 40, + .upper_margin = 21, + .lower_margin = 7, + .hsync_len = 60, + .vsync_len = 10, + .sync = FB_SYNC_EXT, + .vmode = FB_VMODE_NONINTERLACED +} }, { + .bus = 0, + .addr = 0x10, + .pixfmt = IPU_PIX_FMT_RGB666, + .detect = detect_i2c, + .enable = enable_fwadapt_7wvga, + .mode = { + .name = "FWBADAPT-LCD-F07A-0102", + .refresh = 60, + .xres = 800, + .yres = 480, + .pixclock = 33260, + .left_margin = 128, + .right_margin = 128, + .upper_margin = 22, + .lower_margin = 22, + .hsync_len = 1, + .vsync_len = 1, + .sync = 0, + .vmode = FB_VMODE_NONINTERLACED +} } }; + +int board_video_skip(void) +{ + int i; + int ret; + int detected = 0; + char const *panel = getenv("panel"); + if (!panel) { + for (i = 0; i < ARRAY_SIZE(displays); i++) { + struct display_info_t const *dev = displays+i; + if (dev->detect && dev->detect(dev)) { + panel = dev->mode.name; + detected = 1; + break; + } + } + if (!panel) { + panel = displays[0].mode.name; + printf("No panel detected: default to %s\n", panel); + i = 0; + } + } else { + for (i = 0; i < ARRAY_SIZE(displays); i++) { + if (!strcmp(panel, displays[i].mode.name)) + break; + } + } + if (i < ARRAY_SIZE(displays)) { + ret = ipuv3_fb_init(&displays[i].mode, 0, + displays[i].pixfmt); + + if (!ret) { + displays[i].enable(displays+i); + printf("Display: %s (%ux%u) %s\n", + displays[i].mode.name, + displays[i].mode.xres, + displays[i].mode.yres, + (detected ? "[auto]" : "")); + } else + printf("LCD %s cannot be configured: %d\n", + displays[i].mode.name, ret); + } else { + printf("unsupported panel %s\n", panel); + return -EINVAL; + } + + return 0; }
static void setup_display(void) { struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR; + struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR; int reg;
enable_ipu_clock(); imx_setup_hdmi();
+ /* Turn on LDB0, LDB1, IPU,IPU DI0 clocks */ + reg = __raw_readl(&mxc_ccm->CCGR3); + reg |= MXC_CCM_CCGR3_LDB_DI0_MASK | MXC_CCM_CCGR3_LDB_DI1_MASK; + writel(reg, &mxc_ccm->CCGR3); + + /* set LDB0, LDB1 clk select to 011/011 */ + reg = readl(&mxc_ccm->cs2cdr); + reg &= ~(MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_MASK + | MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_MASK); + reg |= (3 << MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_OFFSET) + | (3 << MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_OFFSET); + writel(reg, &mxc_ccm->cs2cdr); + + reg = readl(&mxc_ccm->cscmr2); + reg |= MXC_CCM_CSCMR2_LDB_DI0_IPU_DIV | MXC_CCM_CSCMR2_LDB_DI1_IPU_DIV; + writel(reg, &mxc_ccm->cscmr2); + reg = readl(&mxc_ccm->chsccdr); reg |= (CHSCCDR_CLK_SEL_LDB_DI0 << MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET); + reg |= (CHSCCDR_CLK_SEL_LDB_DI0 + << MXC_CCM_CHSCCDR_IPU1_DI1_CLK_SEL_OFFSET); writel(reg, &mxc_ccm->chsccdr); + + reg = IOMUXC_GPR2_BGREF_RRMODE_EXTERNAL_RES + | IOMUXC_GPR2_DI1_VS_POLARITY_ACTIVE_LOW + | IOMUXC_GPR2_DI0_VS_POLARITY_ACTIVE_LOW + | IOMUXC_GPR2_BIT_MAPPING_CH1_SPWG + | IOMUXC_GPR2_DATA_WIDTH_CH1_18BIT + | IOMUXC_GPR2_BIT_MAPPING_CH0_SPWG + | IOMUXC_GPR2_DATA_WIDTH_CH0_18BIT + | IOMUXC_GPR2_LVDS_CH0_MODE_DISABLED + | IOMUXC_GPR2_LVDS_CH1_MODE_ENABLED_DI0; + writel(reg, &iomux->gpr[2]); + + reg = readl(&iomux->gpr[3]); + reg = (reg & ~(IOMUXC_GPR3_LVDS1_MUX_CTL_MASK + | IOMUXC_GPR3_HDMI_MUX_CTL_MASK)) + | (IOMUXC_GPR3_MUX_SRC_IPU1_DI0 + << IOMUXC_GPR3_LVDS1_MUX_CTL_OFFSET); + writel(reg, &iomux->gpr[3]); + + /* Disable LCD backlight */ + imx_iomux_v3_setup_pad(MX6_PAD_DI0_PIN4__GPIO_4_20); + gpio_direction_input(IMX_GPIO_NR(4, 20)); } #endif /* CONFIG_VIDEO_IPUV3 */
@@ -309,6 +501,8 @@ int board_init(void) /* address of boot parameters */ gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
+ setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info); + return 0; }
diff --git a/include/configs/wandboard.h b/include/configs/wandboard.h index e9c7e64..f9a955d 100644 --- a/include/configs/wandboard.h +++ b/include/configs/wandboard.h @@ -55,6 +55,12 @@ #define CONFIG_LOADADDR 0x12000000 #define CONFIG_SYS_TEXT_BASE 0x17800000
+/* I2C Configs */ +#define CONFIG_CMD_I2C +#define CONFIG_I2C_MULTI_BUS +#define CONFIG_I2C_MXC +#define CONFIG_SYS_I2C_SPEED 100000 + /* MMC Configuration */ #define CONFIG_FSL_ESDHC #define CONFIG_FSL_USDHC @@ -97,6 +103,7 @@ #define CONFIG_VIDEO_LOGO #define CONFIG_VIDEO_BMP_LOGO #define CONFIG_IPUV3_CLK 260000000 +#define CONFIG_CMD_HDMIDETECT #define CONFIG_IMX_HDMI
#if defined(CONFIG_MX6DL) || defined(CONFIG_MX6S) @@ -134,7 +141,33 @@ "fi; " \ "fi\0" \ "mmcargs=setenv bootargs console=${console},${baudrate} " \ - "root=${mmcroot}\0" \ + "root=${mmcroot}; run videoargs\0" \ + "videoargs=" \ + "setenv nextcon 0; " \ + "if hdmidet; then " \ + "setenv bootargs ${bootargs} " \ + "video=mxcfb${nextcon}:dev=hdmi,1280x720M@60," \ + "if=RGB24; " \ + "setenv fbmen fbmem=28M; " \ + "setexpr nextcon ${nextcon} + 1; " \ + "else " \ + "echo - no HDMI monitor;" \ + "fi; " \ + "i2c dev 0; " \ + "if i2c probe 0x10; then " \ + "setenv bootargs ${bootargs} " \ + "video=mxcfb${nextcon}:dev=lcd,800x480@60," \ + "if=RGB666; " \ + "if test 0 -eq ${nextcon}; then " \ + "setenv fbmem fbmem=10M; " \ + "else " \ + "setenv fbmem ${fbmem},10M; " \ + "fi; " \ + "setexpr nextcon ${nextcon} + 1; " \ + "else " \ + "echo '- no FWBADAPT-7WVGA-LCD-F07A-0102 display';" \ + "fi; " \ + "setenv bootargs ${bootargs} ${fbmem}\0" \ "loadbootscript=" \ "fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} ${script};\0" \ "bootscript=echo Running bootscript from mmc ...; " \