diff options
| author | Kevin Huang <kevinh@nvidia.com> | 2012-06-20 10:34:29 -0700 |
|---|---|---|
| committer | Simone Willett <swillett@nvidia.com> | 2012-06-27 17:41:50 -0700 |
| commit | 8192e9996b7a32b8aef49f18b8d72cdc43b71ee3 (patch) | |
| tree | 834a0335376e9224b42b23903ea4f279ec4b75a8 /arch/arm/mach-tegra/board-enterprise-panel.c | |
| parent | 2706d59f63e2897959362f2f1a1be840801ada90 (diff) | |
arm: tegra: enterprise: Add support to externel pwm.
Bug 995402
Change-Id: I53e9f1801d3b37626abb89c67b4e63662dab8c65
Reviewed-on: http://git-master/r/111306
Reviewed-by: Simone Willett <swillett@nvidia.com>
Tested-by: Simone Willett <swillett@nvidia.com>
Diffstat (limited to 'arch/arm/mach-tegra/board-enterprise-panel.c')
| -rw-r--r-- | arch/arm/mach-tegra/board-enterprise-panel.c | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/arch/arm/mach-tegra/board-enterprise-panel.c b/arch/arm/mach-tegra/board-enterprise-panel.c index 97a2294e6f5b..9561e5ad0406 100644 --- a/arch/arm/mach-tegra/board-enterprise-panel.c +++ b/arch/arm/mach-tegra/board-enterprise-panel.c @@ -26,6 +26,7 @@ #include <linux/platform_device.h> #include <linux/earlysuspend.h> #include <linux/tegra_pwm_bl.h> +#include <linux/pwm_backlight.h> #include <asm/atomic.h> #include <linux/nvhost.h> #include <linux/nvmap.h> @@ -62,6 +63,8 @@ #define enterprise_lcd_te TEGRA_GPIO_PJ1 +#define enterprise_bl_pwm TEGRA_GPIO_PH3 + #ifdef CONFIG_TEGRA_DC static struct regulator *enterprise_dsi_reg; static bool dsi_regulator_status; @@ -166,6 +169,17 @@ static int enterprise_backlight_notify(struct device *unused, int brightness) static int enterprise_disp1_check_fb(struct device *dev, struct fb_info *info); +#if IS_EXTERNAL_PWM +static struct platform_pwm_backlight_data enterprise_disp1_backlight_data = { + .pwm_id = 3, + .max_brightness = 255, + .dft_brightness = 224, + .pwm_period_ns = 1000000, + .notify = enterprise_backlight_notify, + /* Only toggle backlight on fb blank notifications for disp1 */ + .check_fb = enterprise_disp1_check_fb, +}; +#else /* * In case which_pwm is TEGRA_PWM_PM0, * gpio_conf_to_sfio should be TEGRA_GPIO_PW0: set LCD_CS1_N pin to SFIO @@ -186,9 +200,15 @@ static struct platform_tegra_pwm_backlight_data enterprise_disp1_backlight_data /* Only toggle backlight on fb blank notifications for disp1 */ .check_fb = enterprise_disp1_check_fb, }; +#endif + static struct platform_device enterprise_disp1_backlight_device = { +#if IS_EXTERNAL_PWM + .name = "pwm-backlight", +#else .name = "tegra-pwm-bl", +#endif .id = -1, .dev = { .platform_data = &enterprise_disp1_backlight_data, @@ -511,8 +531,11 @@ static int enterprise_dsi_panel_enable(void) if (ret) return ret; -#if DSI_PANEL_RESET +#if IS_EXTERNAL_PWM + tegra_gpio_disable(enterprise_bl_pwm); +#endif +#if DSI_PANEL_RESET if (board_info.fab >= BOARD_FAB_A03) { if (enterprise_lcd_reg == NULL) { enterprise_lcd_reg = regulator_get(NULL, "lcd_vddio_en"); @@ -795,7 +818,11 @@ static struct platform_device *enterprise_gfx_devices[] __initdata = { #if defined(CONFIG_TEGRA_NVMAP) &enterprise_nvmap_device, #endif +#if IS_EXTERNAL_PWM + &tegra_pwfm3_device, +#else &tegra_pwfm0_device, +#endif }; static struct platform_device *enterprise_bl_devices[] = { @@ -846,7 +873,9 @@ int __init enterprise_panel_init(void) BUILD_BUG_ON(ARRAY_SIZE(enterprise_bl_output_measured_a02) != 256); if (board_info.fab >= BOARD_FAB_A03) { +#if !(IS_EXTERNAL_PWM) enterprise_disp1_backlight_data.clk_div = 0x1D; +#endif bl_output = enterprise_bl_output_measured_a03; } else bl_output = enterprise_bl_output_measured_a02; |