OMAP3: ZOOM2/3/3630SDP: Add display board file for OMAP3

Board-zoom-display.c added as a common file for display functionality
on boards zoom2, zoom3 and 3630sdp.

Signed-off-by: Mukund Mittal <mmittal@ti.com>
Signed-off-by: Kishore Y <kishore.y@ti.com>
Signed-off-by: Rajkumar N <rajkumar.nagarajan@ti.com>
Signed-off-by: Samreen <samreen@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>

1 files changed, 168 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/board-zoom-display.c b/arch/arm/mach-omap2/board-zoom-display.c
new file mode 100644
index 00000000000..6bcd43657ae
--- /dev/null
+++ b/arch/arm/mach-omap2/board-zoom-display.c
@@ -0,0 +1,168 @@
+/*
+ * Copyright (C) 2010 Texas Instruments Inc.
+ *
+ * Modified from mach-omap2/board-zoom-peripherals.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/gpio.h>
+#include <linux/i2c/twl.h>
+#include <linux/spi/spi.h>
+#include <plat/mcspi.h>
+#include <plat/display.h>
+
+#define LCD_PANEL_RESET_GPIO_PROD	96
+#define LCD_PANEL_RESET_GPIO_PILOT	55
+#define LCD_PANEL_QVGA_GPIO		56
+
+static void zoom_lcd_panel_init(void)
+{
+	int ret;
+	unsigned char lcd_panel_reset_gpio;
+
+	lcd_panel_reset_gpio = (omap_rev() > OMAP3430_REV_ES3_0) ?
+			LCD_PANEL_RESET_GPIO_PROD :
+			LCD_PANEL_RESET_GPIO_PILOT;
+
+	ret = gpio_request(lcd_panel_reset_gpio, "lcd reset");
+	if (ret) {
+		pr_err("Failed to get LCD reset GPIO (gpio%d).\n",
+			lcd_panel_reset_gpio);
+		return;
+	}
+	gpio_direction_output(lcd_panel_reset_gpio, 1);
+
+	ret = gpio_request(LCD_PANEL_QVGA_GPIO, "lcd qvga");
+	if (ret) {
+		pr_err("Failed to get LCD_PANEL_QVGA_GPIO (gpio%d).\n",
+			LCD_PANEL_QVGA_GPIO);
+		goto err0;
+	}
+	gpio_direction_output(LCD_PANEL_QVGA_GPIO, 1);
+
+	return;
+err0:
+	gpio_free(lcd_panel_reset_gpio);
+}
+
+static int zoom_panel_enable_lcd(struct omap_dss_device *dssdev)
+{
+	return 0;
+}
+
+static void zoom_panel_disable_lcd(struct omap_dss_device *dssdev)
+{
+}
+
+/*
+ * PWMA/B register offsets (TWL4030_MODULE_PWMA)
+ */
+#define TWL_INTBR_PMBR1	0xD
+#define TWL_INTBR_GPBR1	0xC
+#define TWL_LED_PWMON	0x0
+#define TWL_LED_PWMOFF	0x1
+
+static int zoom_set_bl_intensity(struct omap_dss_device *dssdev, int level)
+{
+	unsigned char c;
+	u8 mux_pwm, enb_pwm;
+
+	if (level > 100)
+		return -1;
+
+	twl_i2c_read_u8(TWL4030_MODULE_INTBR, &mux_pwm, TWL_INTBR_PMBR1);
+	twl_i2c_read_u8(TWL4030_MODULE_INTBR, &enb_pwm, TWL_INTBR_GPBR1);
+
+	if (level == 0) {
+		/* disable pwm1 output and clock */
+		enb_pwm = enb_pwm & 0xF5;
+		/* change pwm1 pin to gpio pin */
+		mux_pwm = mux_pwm & 0xCF;
+		twl_i2c_write_u8(TWL4030_MODULE_INTBR,
+					enb_pwm, TWL_INTBR_GPBR1);
+		twl_i2c_write_u8(TWL4030_MODULE_INTBR,
+					mux_pwm, TWL_INTBR_PMBR1);
+		return 0;
+	}
+
+	if (!((enb_pwm & 0xA) && (mux_pwm & 0x30))) {
+		/* change gpio pin to pwm1 pin */
+		mux_pwm = mux_pwm | 0x30;
+		/* enable pwm1 output and clock*/
+		enb_pwm = enb_pwm | 0x0A;
+		twl_i2c_write_u8(TWL4030_MODULE_INTBR,
+					mux_pwm, TWL_INTBR_PMBR1);
+		twl_i2c_write_u8(TWL4030_MODULE_INTBR,
+					enb_pwm, TWL_INTBR_GPBR1);
+	}
+
+	c = ((50 * (100 - level)) / 100) + 1;
+	twl_i2c_write_u8(TWL4030_MODULE_PWM1, 0x7F, TWL_LED_PWMOFF);
+	twl_i2c_write_u8(TWL4030_MODULE_PWM1, c, TWL_LED_PWMON);
+
+	return 0;
+}
+
+static struct omap_dss_device zoom_lcd_device = {
+	.name			= "lcd",
+	.driver_name		= "NEC_8048_panel",
+	.type			= OMAP_DISPLAY_TYPE_DPI,
+	.phy.dpi.data_lines	= 24,
+	.platform_enable	= zoom_panel_enable_lcd,
+	.platform_disable	= zoom_panel_disable_lcd,
+	.max_backlight_level	= 100,
+	.set_backlight		= zoom_set_bl_intensity,
+};
+
+static struct omap_dss_device *zoom_dss_devices[] = {
+	&zoom_lcd_device,
+};
+
+static struct omap_dss_board_info zoom_dss_data = {
+	.num_devices		= ARRAY_SIZE(zoom_dss_devices),
+	.devices		= zoom_dss_devices,
+	.default_device		= &zoom_lcd_device,
+};
+
+static struct platform_device zoom_dss_device = {
+	.name				= "omapdss",
+	.id				= -1,
+	.dev				= {
+		.platform_data		= &zoom_dss_data,
+	},
+};
+
+static struct omap2_mcspi_device_config dss_lcd_mcspi_config = {
+	.turbo_mode		= 1,
+	.single_channel	= 1,  /* 0: slave, 1: master */
+};
+
+static struct spi_board_info nec_8048_spi_board_info[] __initdata = {
+	[0] = {
+		.modalias		= "nec_8048_spi",
+		.bus_num		= 1,
+		.chip_select		= 2,
+		.max_speed_hz		= 375000,
+		.controller_data	= &dss_lcd_mcspi_config,
+	},
+};
+
+static struct platform_device *zoom_display_devices[] __initdata = {
+	&zoom_dss_device,
+};
+
+void __init zoom_display_init(void)
+{
+	platform_add_devices(zoom_display_devices,
+				ARRAY_SIZE(zoom_display_devices));
+	spi_register_board_info(nec_8048_spi_board_info,
+				ARRAY_SIZE(nec_8048_spi_board_info));
+	zoom_lcd_panel_init();
+}
+