Merge tag 'v2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

[mv-sheeva.git] / arch / arm / mach-omap2 / board-zoom-display.c

diff --git a/arch/arm/mach-omap2/board-zoom-display.c b/arch/arm/mach-omap2/board-zoom-display.c
new file mode 100644 (file)
index 0000000..6bcd436
--- /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();
+}
+