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Old 04-29-2010, 12:08 PM
Mike Rapoport
 
Default omap3: cm-t35: add DSS2 display support

Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
---
arch/arm/mach-omap2/board-cm-t35.c | 239 +++++++++++++++++++++++++++++++++++-
1 files changed, 238 insertions(+), 1 deletions(-)

diff --git a/arch/arm/mach-omap2/board-cm-t35.c b/arch/arm/mach-omap2/board-cm-t35.c
index 2626a9f..85b4543 100644
--- a/arch/arm/mach-omap2/board-cm-t35.c
+++ b/arch/arm/mach-omap2/board-cm-t35.c
@@ -32,6 +32,9 @@
#include <linux/i2c/twl.h>
#include <linux/regulator/machine.h>

+#include <linux/spi/spi.h>
+#include <linux/spi/tdo24m.h>
+
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
@@ -41,6 +44,7 @@
#include <plat/nand.h>
#include <plat/gpmc.h>
#include <plat/usb.h>
+#include <plat/display.h>

#include <mach/hardware.h>

@@ -248,7 +252,6 @@ static inline void cm_t35_init_nand(void) {}

#if defined(CONFIG_TOUCHSCREEN_ADS7846) ||
defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
-#include <linux/spi/spi.h>
#include <linux/spi/ads7846.h>

#include <plat/mcspi.h>
@@ -304,6 +307,193 @@ static void __init cm_t35_init_ads7846(void)
static inline void cm_t35_init_ads7846(void) {}
#endif

+#define CM_T35_LCD_EN_GPIO 157
+#define CM_T35_LCD_BL_GPIO 58
+#define CM_T35_DVI_EN_GPIO 54
+
+static int lcd_bl_gpio;
+static int lcd_en_gpio;
+static int dvi_en_gpio;
+
+static int lcd_enabled;
+static int dvi_enabled;
+
+static int cm_t35_panel_enable_lcd(struct omap_dss_device *dssdev)
+{
+ if (dvi_enabled) {
+ printk(KERN_ERR "cannot enable LCD, DVI is enabled
");
+ return -EINVAL;
+ }
+
+ gpio_set_value(lcd_en_gpio, 1);
+ gpio_set_value(lcd_bl_gpio, 1);
+
+ lcd_enabled = 1;
+
+ return 0;
+}
+
+static void cm_t35_panel_disable_lcd(struct omap_dss_device *dssdev)
+{
+ lcd_enabled = 0;
+
+ gpio_set_value(lcd_bl_gpio, 0);
+ gpio_set_value(lcd_en_gpio, 0);
+}
+
+static int cm_t35_panel_enable_dvi(struct omap_dss_device *dssdev)
+{
+ if (lcd_enabled) {
+ printk(KERN_ERR "cannot enable DVI, LCD is enabled
");
+ return -EINVAL;
+ }
+
+ gpio_set_value(dvi_en_gpio, 0);
+ dvi_enabled = 1;
+
+ return 0;
+}
+
+static void cm_t35_panel_disable_dvi(struct omap_dss_device *dssdev)
+{
+ gpio_set_value(dvi_en_gpio, 1);
+ dvi_enabled = 0;
+}
+
+static int cm_t35_panel_enable_tv(struct omap_dss_device *dssdev)
+{
+ return 0;
+}
+
+static void cm_t35_panel_disable_tv(struct omap_dss_device *dssdev)
+{
+}
+
+static struct omap_dss_device cm_t35_lcd_device = {
+ .name = "lcd",
+ .driver_name = "toppoly_tdo35s_panel",
+ .type = OMAP_DISPLAY_TYPE_DPI,
+ .phy.dpi.data_lines = 18,
+ .platform_enable = cm_t35_panel_enable_lcd,
+ .platform_disable = cm_t35_panel_disable_lcd,
+};
+
+static struct omap_dss_device cm_t35_dvi_device = {
+ .name = "dvi",
+ .driver_name = "generic_panel",
+ .type = OMAP_DISPLAY_TYPE_DPI,
+ .phy.dpi.data_lines = 24,
+ .platform_enable = cm_t35_panel_enable_dvi,
+ .platform_disable = cm_t35_panel_disable_dvi,
+};
+
+static struct omap_dss_device cm_t35_tv_device = {
+ .name = "tv",
+ .driver_name = "venc",
+ .type = OMAP_DISPLAY_TYPE_VENC,
+ .phy.venc.type = OMAP_DSS_VENC_TYPE_SVIDEO,
+ .platform_enable = cm_t35_panel_enable_tv,
+ .platform_disable = cm_t35_panel_disable_tv,
+};
+
+static struct omap_dss_device *cm_t35_dss_devices[] = {
+ &cm_t35_lcd_device,
+ &cm_t35_dvi_device,
+ &cm_t35_tv_device,
+};
+
+static struct omap_dss_board_info cm_t35_dss_data = {
+ .num_devices = ARRAY_SIZE(cm_t35_dss_devices),
+ .devices = cm_t35_dss_devices,
+ .default_device = &cm_t35_dvi_device,
+};
+
+static struct platform_device cm_t35_dss_device = {
+ .name = "omapdss",
+ .id = -1,
+ .dev = {
+ .platform_data = &cm_t35_dss_data,
+ },
+};
+
+static struct omap2_mcspi_device_config tdo24m_mcspi_config = {
+ .turbo_mode = 0,
+ .single_channel = 1, /* 0: slave, 1: master */
+};
+
+static struct tdo24m_platform_data tdo24m_config = {
+ .model = TDO35S,
+};
+
+static struct spi_board_info cm_t35_lcd_spi_board_info[] __initdata = {
+ {
+ .modalias = "tdo24m",
+ .bus_num = 4,
+ .chip_select = 0,
+ .max_speed_hz = 1000000,
+ .controller_data = &tdo24m_mcspi_config,
+ .platform_data = &tdo24m_config,
+ },
+};
+
+static void __init cm_t35_init_display(void)
+{
+ int err;
+
+ lcd_en_gpio = CM_T35_LCD_EN_GPIO;
+ lcd_bl_gpio = CM_T35_LCD_BL_GPIO;
+ dvi_en_gpio = CM_T35_DVI_EN_GPIO;
+
+ spi_register_board_info(cm_t35_lcd_spi_board_info,
+ ARRAY_SIZE(cm_t35_lcd_spi_board_info));
+
+ err = gpio_request(lcd_en_gpio, "LCD RST");
+ if (err) {
+ pr_err("CM-T35: failed to get LCD reset GPIO
");
+ goto out;
+ }
+
+ err = gpio_request(lcd_bl_gpio, "LCD BL");
+ if (err) {
+ pr_err("CM-T35: failed to get LCD backlight control GPIO
");
+ goto err_lcd_bl;
+ }
+
+ err = gpio_request(dvi_en_gpio, "DVI EN");
+ if (err) {
+ pr_err("CM-T35: failed to get DVI reset GPIO
");
+ goto err_dvi_en;
+ }
+
+ gpio_export(lcd_en_gpio, 0);
+ gpio_export(lcd_bl_gpio, 0);
+ gpio_export(dvi_en_gpio, 0);
+ gpio_direction_output(lcd_en_gpio, 0);
+ gpio_direction_output(lcd_bl_gpio, 0);
+ gpio_direction_output(dvi_en_gpio, 1);
+
+ msleep(50);
+ gpio_set_value(lcd_en_gpio, 1);
+
+ err = platform_device_register(&cm_t35_dss_device);
+ if (err) {
+ pr_err("CM-T35: failed to register DSS device
");
+ goto err_dev_reg;
+ }
+
+ return;
+
+err_dev_reg:
+ gpio_free(dvi_en_gpio);
+err_dvi_en:
+ gpio_free(lcd_bl_gpio);
+err_lcd_bl:
+ gpio_free(lcd_en_gpio);
+out:
+
+ return;
+}
+
static struct regulator_consumer_supply cm_t35_vmmc1_supply = {
.supply = "vmmc",
};
@@ -312,6 +502,16 @@ static struct regulator_consumer_supply cm_t35_vsim_supply = {
.supply = "vmmc_aux",
};

+static struct regulator_consumer_supply cm_t35_vdac_supply = {
+ .supply = "vdda_dac",
+ .dev = &cm_t35_dss_device.dev,
+};
+
+static struct regulator_consumer_supply cm_t35_vdvi_supply = {
+ .supply = "vdvi",
+ .dev = &cm_t35_dss_device.dev,
+};
+
/* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
static struct regulator_init_data cm_t35_vmmc1 = {
.constraints = {
@@ -342,6 +542,35 @@ static struct regulator_init_data cm_t35_vsim = {
.consumer_supplies = &cm_t35_vsim_supply,
};

+/* VDAC for DSS driving S-Video (8 mA unloaded, max 65 mA) */
+static struct regulator_init_data cm_t35_vdac = {
+ .constraints = {
+ .min_uV = 1800000,
+ .max_uV = 1800000,
+ .valid_modes_mask = REGULATOR_MODE_NORMAL
+ | REGULATOR_MODE_STANDBY,
+ .valid_ops_mask = REGULATOR_CHANGE_MODE
+ | REGULATOR_CHANGE_STATUS,
+ },
+ .num_consumer_supplies = 1,
+ .consumer_supplies = &cm_t35_vdac_supply,
+};
+
+/* VPLL2 for digital video outputs */
+static struct regulator_init_data cm_t35_vpll2 = {
+ .constraints = {
+ .name = "VDVI",
+ .min_uV = 1800000,
+ .max_uV = 1800000,
+ .valid_modes_mask = REGULATOR_MODE_NORMAL
+ | REGULATOR_MODE_STANDBY,
+ .valid_ops_mask = REGULATOR_CHANGE_MODE
+ | REGULATOR_CHANGE_STATUS,
+ },
+ .num_consumer_supplies = 1,
+ .consumer_supplies = &cm_t35_vdvi_supply,
+};
+
static struct twl4030_usb_data cm_t35_usb_data = {
.usb_mode = T2_USB_MODE_ULPI,
};
@@ -445,6 +674,8 @@ static struct twl4030_platform_data cm_t35_twldata = {
.gpio = &cm_t35_gpio_data,
.vmmc1 = &cm_t35_vmmc1,
.vsim = &cm_t35_vsim,
+ .vdac = &cm_t35_vdac,
+ .vpll2 = &cm_t35_vpll2,
};

static struct i2c_board_info __initdata cm_t35_i2c_boardinfo[] = {
@@ -568,6 +799,11 @@ static struct omap_board_mux board_mux[] __initdata = {
OMAP3_MUX(DSS_DATA22, OMAP_MUX_MODE0 | OMAP_PIN_OUTPUT),
OMAP3_MUX(DSS_DATA23, OMAP_MUX_MODE0 | OMAP_PIN_OUTPUT),

+ /* display controls */
+ OMAP3_MUX(MCBSP1_FSR, OMAP_MUX_MODE4 | OMAP_PIN_OUTPUT),
+ OMAP3_MUX(GPMC_NCS7, OMAP_MUX_MODE4 | OMAP_PIN_OUTPUT),
+ OMAP3_MUX(GPMC_NCS3, OMAP_MUX_MODE4 | OMAP_PIN_OUTPUT),
+
/* TPS IRQ */
OMAP3_MUX(SYS_NIRQ, OMAP_MUX_MODE0 | OMAP_WAKEUP_EN |
OMAP_PIN_INPUT_PULLUP),
@@ -584,6 +820,7 @@ static void __init cm_t35_init(void)
cm_t35_init_ads7846();
cm_t35_init_ethernet();
cm_t35_init_led();
+ cm_t35_init_display();

usb_musb_init();
}
--
1.6.6.2


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