diff options
| author | ankishore <ankishore@nvidia.com> | 2011-05-16 14:50:53 +0530 |
|---|---|---|
| committer | Niket Sirsi <nsirsi@nvidia.com> | 2011-05-23 16:58:23 -0700 |
| commit | 3b69179f86cab99dc0aff9b68531d54a718b8411 (patch) | |
| tree | d7cf61a1ea0dad5164c72cf87003720de00ded2a /arch/arm/mach-tegra/board-cardhu-panel.c | |
| parent | 6ed528694ecc338c75cc33d768ab8c41bb51b47c (diff) | |
ARM: tegra: cardhu: Panel power management
Added power management support for dsi panels
Bug 793857
Change-Id: I96df03cefc023efef36812ab2bc504f222476160
Reviewed-on: http://git-master/r/31546
Reviewed-by: Animesh Kishore <ankishore@nvidia.com>
Tested-by: Animesh Kishore <ankishore@nvidia.com>
Reviewed-by: Bitan Biswas <bbiswas@nvidia.com>
Reviewed-by: Narendra Damahe <ndamahe@nvidia.com>
Diffstat (limited to 'arch/arm/mach-tegra/board-cardhu-panel.c')
| -rw-r--r-- | arch/arm/mach-tegra/board-cardhu-panel.c | 89 |
1 files changed, 79 insertions, 10 deletions
diff --git a/arch/arm/mach-tegra/board-cardhu-panel.c b/arch/arm/mach-tegra/board-cardhu-panel.c index 34d7c5cc0c8b..b65f345f9497 100644 --- a/arch/arm/mach-tegra/board-cardhu-panel.c +++ b/arch/arm/mach-tegra/board-cardhu-panel.c @@ -56,6 +56,8 @@ #define cardhu_dsi_panel_reset TEGRA_GPIO_PD2 #endif +static struct regulator *cardhu_dsi_reg = NULL; + static struct regulator *cardhu_hdmi_reg = NULL; static struct regulator *cardhu_hdmi_pll = NULL; static struct regulator *cardhu_hdmi_vddio = NULL; @@ -312,7 +314,6 @@ static int cardhu_hdmi_enable(void) static int cardhu_hdmi_disable(void) { - regulator_disable(cardhu_hdmi_reg); regulator_put(cardhu_hdmi_reg); cardhu_hdmi_reg = NULL; @@ -320,7 +321,6 @@ static int cardhu_hdmi_disable(void) regulator_disable(cardhu_hdmi_pll); regulator_put(cardhu_hdmi_pll); cardhu_hdmi_pll = NULL; - return 0; } static struct resource cardhu_disp1_resources[] = { @@ -478,18 +478,28 @@ static struct tegra_dc_platform_data cardhu_disp2_pdata = { static int cardhu_dsi_panel_enable(void) { - static struct regulator *reg = NULL; int ret; - if (reg == NULL) { - reg = regulator_get(NULL, "avdd_dsi_csi"); - if (IS_ERR_OR_NULL(reg)) { + if (cardhu_dsi_reg == NULL) { + cardhu_dsi_reg = regulator_get(NULL, "avdd_dsi_csi"); + if (IS_ERR_OR_NULL(cardhu_dsi_reg)) { pr_err("dsi: Could not get regulator avdd_dsi_csi\n"); - reg = NULL; - return PTR_ERR(reg); + cardhu_dsi_reg = NULL; + return PTR_ERR(cardhu_dsi_reg); } } - regulator_enable(reg); + regulator_enable(cardhu_dsi_reg); + + ret = gpio_request(TEGRA_GPIO_PJ1, "DSI TE"); + if (ret < 0) + return ret; + + ret = gpio_direction_input(TEGRA_GPIO_PJ1); + if (ret < 0) { + gpio_free(TEGRA_GPIO_PJ1); + return ret; + } + tegra_gpio_enable(TEGRA_GPIO_PJ1); #if DSI_PANEL_219 ret = gpio_request(TEGRA_GPIO_PL2, "pl2"); @@ -588,7 +598,52 @@ static int cardhu_dsi_panel_enable(void) static int cardhu_dsi_panel_disable(void) { - return 0; + int err; + + err = 0; + printk(KERN_INFO "DSI panel disable\n"); + +#if DSI_PANEL_219 + tegra_gpio_disable(TEGRA_GPIO_PU2); + gpio_free(TEGRA_GPIO_PU2); + tegra_gpio_disable(TEGRA_GPIO_PH2); + gpio_free(TEGRA_GPIO_PH2); + tegra_gpio_disable(TEGRA_GPIO_PH0); + gpio_free(TEGRA_GPIO_PH0); + tegra_gpio_disable(TEGRA_GPIO_PL2); + gpio_free(TEGRA_GPIO_PL2); +#endif + +#if DSI_PANEL_218 + tegra_gpio_disable(TEGRA_GPIO_PD2); + gpio_free(TEGRA_GPIO_PD2); +#endif + + return err; +} + +static int cardhu_dsi_panel_postsuspend(void) +{ + int err; + + err = 0; + printk(KERN_INFO "DSI panel postsuspend\n"); + + if (cardhu_dsi_reg) { + err = regulator_disable(cardhu_dsi_reg); + if (err < 0) + printk(KERN_ERR + "DSI regulator avdd_dsi_csi disable failed\n"); + regulator_put(cardhu_dsi_reg); + cardhu_dsi_reg = NULL; + } + +#if DSI_PANEL_218 + tegra_gpio_disable(AVDD_LCD); + gpio_free(AVDD_LCD); +#endif + + return err; } static struct tegra_dsi_cmd dsi_init_cmd[]= { @@ -598,6 +653,13 @@ static struct tegra_dsi_cmd dsi_init_cmd[]= { DSI_DLY_MS(20), }; +static struct tegra_dsi_cmd dsi_suspend_cmd[] = { + DSI_CMD_SHORT(0x05, 0x28, 0x00), + DSI_DLY_MS(20), + DSI_CMD_SHORT(0x05, 0x10, 0x00), + DSI_DLY_MS(5), +}; + struct tegra_dsi_out cardhu_dsi = { .n_data_lanes = 2, .pixel_format = TEGRA_DSI_PIXEL_FORMAT_24BIT_P, @@ -610,10 +672,16 @@ struct tegra_dsi_out cardhu_dsi = { #else .dsi_instance = 0, #endif + .panel_reset = DSI_PANEL_RESET, + .n_init_cmd = ARRAY_SIZE(dsi_init_cmd), .dsi_init_cmd = dsi_init_cmd, + .n_suspend_cmd = ARRAY_SIZE(dsi_suspend_cmd), + .dsi_suspend_cmd = dsi_suspend_cmd, + .video_data_type = TEGRA_DSI_VIDEO_TYPE_COMMAND_MODE, + .lp_cmd_mode_freq_khz = 430000, }; static struct tegra_dc_mode cardhu_dsi_modes[] = { @@ -692,6 +760,7 @@ static struct tegra_dc_out cardhu_disp1_out = { .enable = cardhu_dsi_panel_enable, .disable = cardhu_dsi_panel_disable, + .postsuspend = cardhu_dsi_panel_postsuspend, #endif }; static struct tegra_dc_platform_data cardhu_disp1_pdata = { |