From 31a49bec5f107b4cb9fdf552276386a11db687b7 Mon Sep 17 00:00:00 2001 From: Otavio Salvador Date: Wed, 16 Oct 2013 04:55:09 -0300 Subject: [PATCH] wandboard: add Future Eletronics 7" WVGA LCD extension board 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 --- board/wandboard/wandboard.c | 231 ++++++++++++++++++++++++++++++++---- include/configs/wandboard.h | 35 +++++- 2 files changed, 244 insertions(+), 22 deletions(-) diff --git a/board/wandboard/wandboard.c b/board/wandboard/wandboard.c index 23a78c1663..d5837b090a 100644 --- a/board/wandboard/wandboard.c +++ b/board/wandboard/wandboard.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include #include @@ -25,6 +26,7 @@ #include #include #include +#include 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) @@ -208,48 +214,229 @@ 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_pcap_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); +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_pcap(struct display_info_t const *dev) +{ + imx_iomux_v3_setup_multiple_pads(fwadapt_7wvga_pcap_pads, + ARRAY_SIZE(fwadapt_7wvga_pcap_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_pcap, + .mode = { + .name = "FWBADAPT-7WVGA-PCAP-LCD-F07A-0102", + .refresh = 60, + .xres = 800, + .yres = 480, + .pixclock = 33260, + .left_margin = 128, + .right_margin = 128, // 800 + 127 + 127 = 1055 + .upper_margin = 22, + .lower_margin = 22, // 480 + 22 + 22 = 480 + 44 = 524 + .hsync_len = 1, /* note: DE only display */ + .vsync_len = 1, /* note: DE only display */ + .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 */ @@ -307,6 +494,8 @@ 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 442a9841ca..29aab40238 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-PCAP-LCD-F07A-0102 display';" \ + "fi; " \ + "setenv bootargs ${bootargs} ${fbmem}\0" \ "loadbootscript=" \ "fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} ${script};\0" \ "bootscript=echo Running bootscript from mmc ...; " \ -- 2.40.1