From 67a87638586acaf7907f94d2f0d3b09190c23880 Mon Sep 17 00:00:00 2001
From: Gregoire Gentil <gregoire@gentil.com>
Date: Fri, 12 Mar 2010 11:49:16 +0100
Subject: [PATCH 16/17] ARM: OMAP: omap3-touchbook: update boardfile

---
 arch/arm/mach-omap2/board-omap3touchbook.c |  417 +++++++++++++++++++++-------
 1 files changed, 322 insertions(+), 95 deletions(-)

diff --git a/arch/arm/mach-omap2/board-omap3touchbook.c b/arch/arm/mach-omap2/board-omap3touchbook.c
index fc3e03c..c22a3e3 100644
--- a/arch/arm/mach-omap2/board-omap3touchbook.c
+++ b/arch/arm/mach-omap2/board-omap3touchbook.c
@@ -1,7 +1,7 @@
 /*
  * linux/arch/arm/mach-omap2/board-omap3touchbook.c
  *
- * Copyright (C) 2009 Always Innovating
+ * Copyright (C) 2009-2010 Always Innovating
  *
  * Modified from mach-omap2/board-omap3beagleboard.c
  *
@@ -33,6 +33,7 @@
 #include <linux/spi/spi.h>
 
 #include <linux/spi/ads7846.h>
+#include <linux/mma7455l.h>
 
 #include <linux/regulator/machine.h>
 #include <linux/i2c/twl.h>
@@ -45,6 +46,7 @@
 
 #include <plat/board.h>
 #include <plat/common.h>
+#include <plat/display.h>
 #include <plat/gpmc.h>
 #include <plat/nand.h>
 #include <plat/usb.h>
@@ -60,18 +62,22 @@
 
 #include <asm/setup.h>
 
+#include <plat/dmtimer.h>
+#include <linux/backlight.h>
 
 #define GPMC_CS0_BASE  0x60
 #define GPMC_CS_SIZE   0x30
 
 #define NAND_BLOCK_SIZE		SZ_128K
 
+#define OMAP3_HJ_GPIO		56
 #define OMAP3_AC_GPIO		136
+#define OMAP3_TS2_GPIO		154
 #define OMAP3_TS_GPIO		162
 #define TB_BL_PWM_TIMER		9
 #define TB_KILL_POWER_GPIO	168
 
-unsigned long touchbook_revision;
+unsigned long ai_revision = 2;
 
 static struct mtd_partition omap3touchbook_nand_partitions[] = {
 	/* All the partition sizes are listed in terms of NAND block size */
@@ -126,6 +132,103 @@ static struct platform_device omap3touchbook_nand_device = {
 	.resource	= &omap3touchbook_nand_resource,
 };
 
+static int touchbook_enable_dvi(struct omap_dss_device *dssdev)
+{
+	if (dssdev->reset_gpio != -1)
+		gpio_set_value(dssdev->reset_gpio, 1);
+
+	return 0;
+}
+
+static void touchbook_disable_dvi(struct omap_dss_device *dssdev)
+{
+	if (dssdev->reset_gpio != -1)
+		gpio_set_value(dssdev->reset_gpio, 0);
+}
+
+static struct omap_dss_device touchbook_dvi_device = {
+	.type = OMAP_DISPLAY_TYPE_DPI,
+	.name = "dvi",
+	.driver_name = "generic_panel",
+	.phy.dpi.data_lines = 24,
+	.reset_gpio = 176,
+	.platform_enable = touchbook_enable_dvi,
+	.platform_disable = touchbook_disable_dvi,
+};
+
+static int touchbook_panel_enable_tv(struct omap_dss_device *dssdev)
+{
+#define ENABLE_VDAC_DEDICATED           0x03
+#define ENABLE_VDAC_DEV_GRP             0x20
+
+	twl_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
+			ENABLE_VDAC_DEDICATED,
+			TWL4030_VDAC_DEDICATED);
+	twl_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
+			ENABLE_VDAC_DEV_GRP, TWL4030_VDAC_DEV_GRP);
+
+	return 0;
+}
+
+static void touchbook_panel_disable_tv(struct omap_dss_device *dssdev)
+{
+	twl_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, 0x00,
+			TWL4030_VDAC_DEDICATED);
+	twl_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, 0x00,
+			TWL4030_VDAC_DEV_GRP);
+}
+
+static struct omap_dss_device touchbook_tv_device = {
+	.name = "tv",
+	.driver_name = "venc",
+	.type = OMAP_DISPLAY_TYPE_VENC,
+	.phy.venc.type = OMAP_DSS_VENC_TYPE_SVIDEO,
+	.platform_enable = touchbook_panel_enable_tv,
+	.platform_disable = touchbook_panel_disable_tv,
+};
+
+static struct omap_dss_device *touchbook_dss_devices[] = {
+	&touchbook_dvi_device,
+	&touchbook_tv_device,
+};
+
+static struct omap_dss_board_info touchbook_dss_data = {
+	.num_devices = ARRAY_SIZE(touchbook_dss_devices),
+	.devices = touchbook_dss_devices,
+	.default_device = &touchbook_dvi_device,
+};
+
+static struct platform_device touchbook_dss_device = {
+	.name		= "omapdss",
+	.id		= -1,
+	.dev            = {
+		.platform_data = &touchbook_dss_data,
+	},
+};
+
+static struct regulator_consumer_supply touchbook_vdac_supply = {
+	.supply		= "vdda_dac",
+	.dev		= &touchbook_dss_device.dev,
+};
+
+static struct regulator_consumer_supply touchbook_vdvi_supply = {
+	.supply		= "vdds_dsi",
+	.dev		= &touchbook_dss_device.dev,
+};
+
+static void __init touchbook_display_init(void)
+{
+	int r;
+
+	r = gpio_request(touchbook_dvi_device.reset_gpio, "DVI reset");
+	if (r < 0) {
+		printk(KERN_ERR "Unable to get DVI reset GPIO\n");
+		return;
+	}
+
+	gpio_direction_output(touchbook_dvi_device.reset_gpio, 0);
+}
+
 #include "sdram-micron-mt46h32m32lf-6.h"
 
 static struct twl4030_hsmmc_info mmc[] = {
@@ -137,15 +240,6 @@ static struct twl4030_hsmmc_info mmc[] = {
 	{}	/* Terminator */
 };
 
-static struct platform_device omap3_touchbook_lcd_device = {
-	.name		= "omap3touchbook_lcd",
-	.id		= -1,
-};
-
-static struct omap_lcd_config omap3_touchbook_lcd_config __initdata = {
-	.ctrl_name	= "internal",
-};
-
 static struct regulator_consumer_supply touchbook_vmmc1_supply = {
 	.supply			= "vmmc",
 };
@@ -177,6 +271,7 @@ static int touchbook_twl_gpio_setup(struct device *dev,
 	 * power switch and overcurrent detect
 	 */
 
+#if 0
 	gpio_request(gpio + 1, "EHCI_nOC");
 	gpio_direction_input(gpio + 1);
 
@@ -187,6 +282,7 @@ static int touchbook_twl_gpio_setup(struct device *dev,
 	/* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
 	gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
 
+#endif
 	return 0;
 }
 
@@ -201,16 +297,6 @@ static struct twl4030_gpio_platform_data touchbook_gpio_data = {
 	.setup		= touchbook_twl_gpio_setup,
 };
 
-static struct regulator_consumer_supply touchbook_vdac_supply = {
-	.supply		= "vdac",
-	.dev		= &omap3_touchbook_lcd_device.dev,
-};
-
-static struct regulator_consumer_supply touchbook_vdvi_supply = {
-	.supply		= "vdvi",
-	.dev		= &omap3_touchbook_lcd_device.dev,
-};
-
 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
 static struct regulator_init_data touchbook_vmmc1 = {
 	.constraints = {
@@ -283,6 +369,15 @@ static struct twl4030_codec_data touchbook_codec_data = {
 	.audio = &touchbook_audio_data,
 };
 
+static struct twl4030_bci_platform_data touchbook_bci_data = {
+	.tblsize		= 0,
+	.no_backup_battery	= 1,
+};
+
+static struct twl4030_madc_platform_data touchbook_madc_data = {
+	.irq_line	= 1,
+};
+
 static struct twl4030_platform_data touchbook_twldata = {
 	.irq_base	= TWL4030_IRQ_BASE,
 	.irq_end	= TWL4030_IRQ_END,
@@ -291,10 +386,15 @@ static struct twl4030_platform_data touchbook_twldata = {
 	.usb		= &touchbook_usb_data,
 	.gpio		= &touchbook_gpio_data,
 	.codec		= &touchbook_codec_data,
+	.madc		= &touchbook_madc_data,
 	.vmmc1		= &touchbook_vmmc1,
 	.vsim		= &touchbook_vsim,
 	.vdac		= &touchbook_vdac,
 	.vpll2		= &touchbook_vpll2,
+
+	/* TouchBook BCI */
+	.bci		= &touchbook_bci_data,
+	.madc		= &touchbook_madc_data,
 };
 
 static struct i2c_board_info __initdata touchbook_i2c_boardinfo[] = {
@@ -310,10 +410,18 @@ static struct i2c_board_info __initdata touchBook_i2c_boardinfo[] = {
 	{
 		I2C_BOARD_INFO("bq27200", 0x55),
 	},
+	{
+		I2C_BOARD_INFO("chacha", 0x40),
+		.irq = OMAP_GPIO_IRQ(OMAP3_TS2_GPIO),
+	},
+	{
+		I2C_BOARD_INFO("ds1307", 0x68),
+	},
 };
 
 static int __init omap3_touchbook_i2c_init(void)
 {
+	int ret;
 	/* Standard TouchBook bus */
 	omap_register_i2c_bus(1, 2600, touchbook_i2c_boardinfo,
 			ARRAY_SIZE(touchbook_i2c_boardinfo));
@@ -322,53 +430,16 @@ static int __init omap3_touchbook_i2c_init(void)
 	omap_register_i2c_bus(3, 100, touchBook_i2c_boardinfo,
 			ARRAY_SIZE(touchBook_i2c_boardinfo));
 
-	return 0;
-}
-
-static void __init omap3_ads7846_init(void)
-{
-	if (gpio_request(OMAP3_TS_GPIO, "ads7846_pen_down")) {
-		printk(KERN_ERR "Failed to request GPIO %d for "
-				"ads7846 pen down IRQ\n", OMAP3_TS_GPIO);
-		return;
+	ret = gpio_request(OMAP3_TS2_GPIO, "chacha");
+	if (ret < 0) {
+		printk(KERN_ERR "Failed to request GPIO %d for chacha IRQ\n", OMAP3_TS2_GPIO);
+		return 0;
 	}
+	gpio_direction_input(OMAP3_TS2_GPIO);
 
-	gpio_direction_input(OMAP3_TS_GPIO);
-	omap_set_gpio_debounce(OMAP3_TS_GPIO, 1);
-	omap_set_gpio_debounce_time(OMAP3_TS_GPIO, 0xa);
+	return 0;
 }
 
-static struct ads7846_platform_data ads7846_config = {
-	.x_min			= 100,
-	.y_min			= 265,
-	.x_max			= 3950,
-	.y_max			= 3750,
-	.x_plate_ohms		= 40,
-	.pressure_max		= 255,
-	.debounce_max		= 10,
-	.debounce_tol		= 5,
-	.debounce_rep		= 1,
-	.gpio_pendown		= OMAP3_TS_GPIO,
-	.keep_vref_on		= 1,
-};
-
-static struct omap2_mcspi_device_config ads7846_mcspi_config = {
-	.turbo_mode	= 0,
-	.single_channel	= 1,	/* 0: slave, 1: master */
-};
-
-static struct spi_board_info omap3_ads7846_spi_board_info[] __initdata = {
-	{
-		.modalias		= "ads7846",
-		.bus_num		= 4,
-		.chip_select		= 0,
-		.max_speed_hz		= 1500000,
-		.controller_data	= &ads7846_mcspi_config,
-		.irq			= OMAP_GPIO_IRQ(OMAP3_TS_GPIO),
-		.platform_data		= &ads7846_config,
-	}
-};
-
 static struct gpio_led gpio_leds[] = {
 	{
 		.name			= "touchbook::usr0",
@@ -412,6 +483,7 @@ static struct gpio_keys_button gpio_buttons[] = {
 		.gpio			= 183,
 		.desc			= "power",
 		.wakeup			= 1,
+		.active_low		= 1,
 	},
 };
 
@@ -428,23 +500,8 @@ static struct platform_device keys_gpio = {
 	},
 };
 
-static struct omap_board_config_kernel omap3_touchbook_config[] __initdata = {
-	{ OMAP_TAG_LCD,		&omap3_touchbook_lcd_config },
-};
-
-#ifdef CONFIG_OMAP_MUX
-static struct omap_board_mux board_mux[] __initdata = {
-	{ .reg_offset = OMAP_MUX_TERMINATOR },
-};
-#else
-#define board_mux	NULL
-#endif
-
 static void __init omap3_touchbook_init_irq(void)
 {
-	omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
-	omap_board_config = omap3_touchbook_config;
-	omap_board_config_size = ARRAY_SIZE(omap3_touchbook_config);
 	omap2_init_common_hw(mt46h32m32lf6_sdrc_params,
 			     mt46h32m32lf6_sdrc_params, omap35x_mpu_rate_table,
 			     omap35x_dsp_rate_table, omap35x_l3_rate_table);
@@ -456,9 +513,9 @@ static void __init omap3_touchbook_init_irq(void)
 }
 
 static struct platform_device *omap3_touchbook_devices[] __initdata = {
-	&omap3_touchbook_lcd_device,
 	&leds_gpio,
 	&keys_gpio,
+	&touchbook_dss_device,
 };
 
 static void __init omap3touchbook_flash_init(void)
@@ -500,7 +557,7 @@ static void __init omap3touchbook_flash_init(void)
 	}
 }
 
-static struct ehci_hcd_omap_platform_data ehci_pdata __initconst = {
+static struct ehci_hcd_omap_platform_data ehci_pdata __initdata = {
 
 	.port_mode[0] = EHCI_HCD_OMAP_MODE_PHY,
 	.port_mode[1] = EHCI_HCD_OMAP_MODE_PHY,
@@ -512,6 +569,170 @@ static struct ehci_hcd_omap_platform_data ehci_pdata __initconst = {
 	.reset_gpio_port[2]  = -EINVAL
 };
 
+#ifdef CONFIG_OMAP_MUX
+static struct omap_board_mux board_mux[] __initdata = {
+	{ .reg_offset = OMAP_MUX_TERMINATOR },
+};
+#else
+#define board_mux	NULL
+#endif
+
+static struct ads7846_platform_data ads7846_config = {
+	.x_min			= 100,
+	.y_min			= 265,
+	.x_max			= 3950,
+	.y_max			= 3750,
+	.x_plate_ohms		= 40,
+	.pressure_max		= 255,
+	.debounce_max		= 10,
+	.debounce_tol		= 5,
+	.debounce_rep		= 1,
+	.gpio_pendown		= OMAP3_TS_GPIO,
+	.keep_vref_on		= 1,
+};
+
+static struct omap2_mcspi_device_config ads7846_mcspi_config = {
+	.turbo_mode	= 0,
+	.single_channel	= 1,	/* 0: slave, 1: master */
+};
+
+static struct spi_board_info omap3_ads7846_spi_board_info[] __initdata = {
+	{
+		.modalias		= "ads7846",
+		.bus_num		= 4,
+		.chip_select		= 0,
+		.max_speed_hz		= 1500000,
+		.controller_data	= &ads7846_mcspi_config,
+		.irq			= OMAP_GPIO_IRQ(OMAP3_TS_GPIO),
+		.platform_data		= &ads7846_config,
+	}
+};
+
+static void __init omap3_ads7846_init(void)
+{
+	if (gpio_request(OMAP3_TS_GPIO, "ads7846_pen_down")) {
+		printk(KERN_ERR "Failed to request GPIO %d for "
+				"ads7846 pen down IRQ\n", OMAP3_TS_GPIO);
+		return;
+	}
+
+	gpio_direction_input(OMAP3_TS_GPIO);
+	omap_set_gpio_debounce(OMAP3_TS_GPIO, 1);
+	omap_set_gpio_debounce_time(OMAP3_TS_GPIO, 0xa);
+}
+
+static struct mma7455l_platform_data mma7455l_config = {
+	.calibration_x = -4,
+	.calibration_y = 28,
+	.calibration_z = -28,
+};
+
+static struct omap2_mcspi_device_config mma7455l_mcspi_config = {
+	.turbo_mode	= 0,
+	.single_channel	= 1,	/* 0: slave, 1: master */
+};
+
+static struct spi_board_info omap3_mma7455l_spi_board_info[] __initdata = {
+	{
+		.modalias		= "mma7455l",
+		.bus_num		= 3,
+		.chip_select		= 0,
+		.max_speed_hz		= 200000,
+		.irq			= OMAP_GPIO_IRQ(OMAP3_AC_GPIO),
+		.controller_data	= &mma7455l_mcspi_config, //(void *) 135,
+		.platform_data		= &mma7455l_config,
+	}
+};
+
+static void __init omap3_mma7455l_init(void)
+{
+	int ret;
+
+	ret = gpio_request(OMAP3_AC_GPIO, "mma7455l");
+	if (ret < 0) {
+		printk(KERN_ERR "Failed to request GPIO %d for mma7455l IRQ\n", OMAP3_AC_GPIO);
+		return;
+	}
+
+	gpio_direction_input(OMAP3_AC_GPIO);
+}
+
+static int touchbook_backlight_brightness = 50;
+static struct omap_dm_timer *touchbook_backlight_pwm;
+
+static int touchbook_backlight_read(struct backlight_device *bd)
+{
+	return touchbook_backlight_brightness;
+}
+
+static int touchbook_backlight_update(struct backlight_device *bd)
+{
+	int value = bd->props.brightness;
+	touchbook_backlight_brightness = value;
+
+	/* Frequency calculation:
+	   - For 200Hz PWM, you want to load -164 (=> -32768Hz / 200Hz).
+	   - Minimum duty cycle for the backlight is 15%.
+	   - You have (164*0.85) => ~140 levels of brightness.
+	*/
+
+	/* Halve input brightness */
+	if (!bd->props.boost)
+		value /= 2;
+
+	/* For maximum brightness, just stop the timer... */
+	if(value != bd->props.max_brightness)
+	{
+		/* Load the appropriate value for 200Hz PWM */
+		u32 period = clk_get_rate(omap_dm_timer_get_fclk(touchbook_backlight_pwm)) / bd->props.pwm_fq;
+
+		/* Minimum duty cycle is 15% */
+		u32 minimum = (period * bd->props.min_duty) / 100;
+		u32 maximum = (period * 17) / 20;
+
+		/* Work out match value */
+		u32 match = (maximum * value) / 100;
+
+		/* Start... */
+		omap_dm_timer_set_load(touchbook_backlight_pwm, 1, 0xFFFFFFFF - period - 1);
+		omap_dm_timer_set_match(touchbook_backlight_pwm, 1, 0xFFFFFFFF - minimum - match);
+		omap_dm_timer_write_counter(touchbook_backlight_pwm, -1);
+		omap_dm_timer_start(touchbook_backlight_pwm);
+	}
+	else
+		omap_dm_timer_stop(touchbook_backlight_pwm);
+
+
+	return 0;
+}
+
+static struct backlight_ops touchbook_backlight_properties = {
+	.get_brightness = touchbook_backlight_read,
+	.update_status = touchbook_backlight_update,
+};
+
+static void __init omap3_touchbook_backlight_init(void)
+{
+	static struct backlight_device *bd;
+	bd = backlight_device_register("touchbook", NULL, NULL, &touchbook_backlight_properties);
+
+	if(bd)
+	{
+		touchbook_backlight_pwm = omap_dm_timer_request_specific(TB_BL_PWM_TIMER);
+		omap_dm_timer_enable(touchbook_backlight_pwm);
+		omap_dm_timer_set_source(touchbook_backlight_pwm, OMAP_TIMER_SRC_SYS_CLK);
+		omap_dm_timer_set_pwm(touchbook_backlight_pwm, 1, 1, OMAP_TIMER_TRIGGER_OVERFLOW_AND_COMPARE);
+
+		bd->props.max_brightness = 100;
+		bd->props.brightness = touchbook_backlight_brightness;
+		bd->props.boost = 0;
+		bd->props.min_duty = 15;
+		bd->props.pwm_fq = 200;
+	}
+
+	touchbook_backlight_update(bd);
+}
+
 static void omap3_touchbook_poweroff(void)
 {
 	int r;
@@ -525,33 +746,26 @@ static void omap3_touchbook_poweroff(void)
 	gpio_direction_output(TB_KILL_POWER_GPIO, 0);
 }
 
-static void __init early_touchbook_revision(char **p)
+static int __init ai_revision_instance(char *str)
 {
-	if (!*p)
-		return;
+	if (!str)
+		return -EINVAL;
+
+	ai_revision = simple_strtoul(str, NULL, 10);
 
-	strict_strtoul(*p, 10, &touchbook_revision);
+	return 0;
 }
-__early_param("tbr=", early_touchbook_revision);
 
 static void __init omap3_touchbook_init(void)
 {
 	pm_power_off = omap3_touchbook_poweroff;
 
+	omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 	omap3_touchbook_i2c_init();
 	platform_add_devices(omap3_touchbook_devices,
 			ARRAY_SIZE(omap3_touchbook_devices));
 	omap_serial_init();
 
-	omap_mux_init_gpio(170, OMAP_PIN_INPUT);
-	gpio_request(176, "DVI_nPD");
-	/* REVISIT leave DVI powered down until it's needed ... */
-	gpio_direction_output(176, true);
-
-	/* Touchscreen and accelerometer */
-	spi_register_board_info(omap3_ads7846_spi_board_info,
-				ARRAY_SIZE(omap3_ads7846_spi_board_info));
-	omap3_ads7846_init();
 	usb_musb_init();
 	usb_ehci_init(&ehci_pdata);
 	omap3touchbook_flash_init();
@@ -559,6 +773,17 @@ static void __init omap3_touchbook_init(void)
 	/* Ensure SDRC pins are mux'd for self-refresh */
 	omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
 	omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
+
+	touchbook_display_init();
+	omap3_touchbook_backlight_init();
+
+	/* Touchscreen and accelerometer */
+	spi_register_board_info(omap3_ads7846_spi_board_info,
+				ARRAY_SIZE(omap3_ads7846_spi_board_info));
+	spi_register_board_info(omap3_mma7455l_spi_board_info,
+				ARRAY_SIZE(omap3_mma7455l_spi_board_info));
+	omap3_ads7846_init();
+	omap3_mma7455l_init();
 }
 
 static void __init omap3_touchbook_map_io(void)
@@ -567,6 +792,8 @@ static void __init omap3_touchbook_map_io(void)
 	omap2_map_common_io();
 }
 
+early_param("air", ai_revision_instance);
+
 MACHINE_START(TOUCHBOOK, "OMAP3 touchbook Board")
 	/* Maintainer: Gregoire Gentil - http://www.alwaysinnovating.com */
 	.phys_io	= 0x48000000,
-- 
1.6.6.1

