diff options
| author | Min-wuk Lee <mlee@nvidia.com> | 2011-09-21 17:39:36 +0900 |
|---|---|---|
| committer | Simone Willett <swillett@nvidia.com> | 2011-09-26 14:55:12 -0700 |
| commit | 8d3412cfe2dd1d135209f8060f883fdc85571d8e (patch) | |
| tree | f69b43ad56e1aba16265759a786578ef1ddd223c /arch | |
| parent | 2fef30499bee214825cceece9b7a9dba3751fba5 (diff) | |
ARM: tegra: enterprise: remove panel reset in first kernel boot
Panel reset in the first kernel boot is removed because
this makes short flicker in transition from bootloader display
to kernel display.
Panel reset in system resume is still remained.
Bug 874071
Change-Id: I0188ba75cb3c63f798a4a3689b85728ae66e9c44
Reviewed-on: http://git-master/r/53695
Reviewed-by: Simone Willett <swillett@nvidia.com>
Tested-by: Simone Willett <swillett@nvidia.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-tegra/board-enterprise-panel.c | 37 |
1 files changed, 22 insertions, 15 deletions
diff --git a/arch/arm/mach-tegra/board-enterprise-panel.c b/arch/arm/mach-tegra/board-enterprise-panel.c index f37b5f2e32b8..01de08299e2b 100644 --- a/arch/arm/mach-tegra/board-enterprise-panel.c +++ b/arch/arm/mach-tegra/board-enterprise-panel.c @@ -106,6 +106,8 @@ static tegra_dc_bl_output enterprise_bl_output_measured = { static p_tegra_dc_bl_output bl_output; +static bool kernel_1st_panel_init = true; + static int enterprise_backlight_notify(struct device *unused, int brightness) { int cur_sd_brightness = atomic_read(&sd_brightness); @@ -436,21 +438,23 @@ static int enterprise_dsi_panel_enable(void) } #if DSI_PANEL_RESET - ret = gpio_request(enterprise_dsi_panel_reset, "panel reset"); - if (ret < 0) - return ret; + if (kernel_1st_panel_init != true) { + ret = gpio_request(enterprise_dsi_panel_reset, "panel reset"); + if (ret < 0) + return ret; - ret = gpio_direction_output(enterprise_dsi_panel_reset, 0); - if (ret < 0) { - gpio_free(enterprise_dsi_panel_reset); - return ret; - } - tegra_gpio_enable(enterprise_dsi_panel_reset); + ret = gpio_direction_output(enterprise_dsi_panel_reset, 0); + if (ret < 0) { + gpio_free(enterprise_dsi_panel_reset); + return ret; + } + tegra_gpio_enable(enterprise_dsi_panel_reset); - gpio_set_value(enterprise_dsi_panel_reset, 0); - udelay(2000); - gpio_set_value(enterprise_dsi_panel_reset, 1); - mdelay(20); + gpio_set_value(enterprise_dsi_panel_reset, 0); + udelay(2000); + gpio_set_value(enterprise_dsi_panel_reset, 1); + mdelay(20); + } #endif return ret; @@ -459,8 +463,11 @@ static int enterprise_dsi_panel_enable(void) static int enterprise_dsi_panel_disable(void) { #if DSI_PANEL_RESET - tegra_gpio_disable(enterprise_dsi_panel_reset); - gpio_free(enterprise_dsi_panel_reset); + if (kernel_1st_panel_init != true) { + tegra_gpio_disable(enterprise_dsi_panel_reset); + gpio_free(enterprise_dsi_panel_reset); + } else + kernel_1st_panel_init = false; #endif return 0; } |