| /* |
| * hdmi.c |
| * |
| * HDMI interface DSS driver setting for TI's OMAP4 family of processor. |
| * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com/ |
| * Authors: Yong Zhi |
| * Mythri pk <mythripk@ti.com> |
| * |
| * 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. |
| * |
| * This program is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| * more details. |
| * |
| * You should have received a copy of the GNU General Public License along with |
| * this program. If not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #define DSS_SUBSYS_NAME "HDMI" |
| |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/err.h> |
| #include <linux/io.h> |
| #include <linux/interrupt.h> |
| #include <linux/mutex.h> |
| #include <linux/delay.h> |
| #include <linux/string.h> |
| #include <linux/platform_device.h> |
| #include <linux/pm_runtime.h> |
| #include <linux/clk.h> |
| #include <linux/gpio.h> |
| #include <linux/regulator/consumer.h> |
| #include <video/omapdss.h> |
| |
| #include "ti_hdmi.h" |
| #include "dss.h" |
| #include "dss_features.h" |
| |
| #define HDMI_WP 0x0 |
| #define HDMI_CORE_SYS 0x400 |
| #define HDMI_CORE_AV 0x900 |
| #define HDMI_PLLCTRL 0x200 |
| #define HDMI_PHY 0x300 |
| |
| /* HDMI EDID Length move this */ |
| #define HDMI_EDID_MAX_LENGTH 256 |
| #define EDID_TIMING_DESCRIPTOR_SIZE 0x12 |
| #define EDID_DESCRIPTOR_BLOCK0_ADDRESS 0x36 |
| #define EDID_DESCRIPTOR_BLOCK1_ADDRESS 0x80 |
| #define EDID_SIZE_BLOCK0_TIMING_DESCRIPTOR 4 |
| #define EDID_SIZE_BLOCK1_TIMING_DESCRIPTOR 4 |
| |
| #define HDMI_DEFAULT_REGN 16 |
| #define HDMI_DEFAULT_REGM2 1 |
| |
| static struct { |
| struct mutex lock; |
| struct platform_device *pdev; |
| |
| struct hdmi_ip_data ip_data; |
| |
| struct clk *sys_clk; |
| struct regulator *vdda_hdmi_dac_reg; |
| |
| int ct_cp_hpd_gpio; |
| int ls_oe_gpio; |
| int hpd_gpio; |
| |
| struct omap_dss_device output; |
| } hdmi; |
| |
| /* |
| * Logic for the below structure : |
| * user enters the CEA or VESA timings by specifying the HDMI/DVI code. |
| * There is a correspondence between CEA/VESA timing and code, please |
| * refer to section 6.3 in HDMI 1.3 specification for timing code. |
| * |
| * In the below structure, cea_vesa_timings corresponds to all OMAP4 |
| * supported CEA and VESA timing values.code_cea corresponds to the CEA |
| * code, It is used to get the timing from cea_vesa_timing array.Similarly |
| * with code_vesa. Code_index is used for back mapping, that is once EDID |
| * is read from the TV, EDID is parsed to find the timing values and then |
| * map it to corresponding CEA or VESA index. |
| */ |
| |
| static const struct hdmi_config cea_timings[] = { |
| { |
| { 640, 480, 25200, 96, 16, 48, 2, 10, 33, |
| OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW, |
| false, }, |
| { 1, HDMI_HDMI }, |
| }, |
| { |
| { 720, 480, 27027, 62, 16, 60, 6, 9, 30, |
| OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW, |
| false, }, |
| { 2, HDMI_HDMI }, |
| }, |
| { |
| { 1280, 720, 74250, 40, 110, 220, 5, 5, 20, |
| OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH, |
| false, }, |
| { 4, HDMI_HDMI }, |
| }, |
| { |
| { 1920, 540, 74250, 44, 88, 148, 5, 2, 15, |
| OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH, |
| true, }, |
| { 5, HDMI_HDMI }, |
| }, |
| { |
| { 1440, 240, 27027, 124, 38, 114, 3, 4, 15, |
| OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW, |
| true, }, |
| { 6, HDMI_HDMI }, |
| }, |
| { |
| { 1920, 1080, 148500, 44, 88, 148, 5, 4, 36, |
| OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH, |
| false, }, |
| { 16, HDMI_HDMI }, |
| }, |
| { |
| { 720, 576, 27000, 64, 12, 68, 5, 5, 39, |
| OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW, |
| false, }, |
| { 17, HDMI_HDMI }, |
| }, |
| { |
| { 1280, 720, 74250, 40, 440, 220, 5, 5, 20, |
| OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH, |
| false, }, |
| { 19, HDMI_HDMI }, |
| }, |
| { |
| { 1920, 540, 74250, 44, 528, 148, 5, 2, 15, |
| OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH, |
| true, }, |
| { 20, HDMI_HDMI }, |
| }, |
| { |
| { 1440, 288, 27000, 126, 24, 138, 3, 2, 19, |
| OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW, |
| true, }, |
| { 21, HDMI_HDMI }, |
| }, |
| { |
| { 1440, 576, 54000, 128, 24, 136, 5, 5, 39, |
| OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW, |
| false, }, |
| { 29, HDMI_HDMI }, |
| }, |
| { |
| { 1920, 1080, 148500, 44, 528, 148, 5, 4, 36, |
| OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH, |
| false, }, |
| { 31, HDMI_HDMI }, |
| }, |
| { |
| { 1920, 1080, 74250, 44, 638, 148, 5, 4, 36, |
| OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH, |
| false, }, |
| { 32, HDMI_HDMI }, |
| }, |
| { |
| { 2880, 480, 108108, 248, 64, 240, 6, 9, 30, |
| OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW, |
| false, }, |
| { 35, HDMI_HDMI }, |
| }, |
| { |
| { 2880, 576, 108000, 256, 48, 272, 5, 5, 39, |
| OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW, |
| false, }, |
| { 37, HDMI_HDMI }, |
| }, |
| }; |
| |
| static const struct hdmi_config vesa_timings[] = { |
| /* VESA From Here */ |
| { |
| { 640, 480, 25175, 96, 16, 48, 2, 11, 31, |
| OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW, |
| false, }, |
| { 4, HDMI_DVI }, |
| }, |
| { |
| { 800, 600, 40000, 128, 40, 88, 4, 1, 23, |
| OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH, |
| false, }, |
| { 9, HDMI_DVI }, |
| }, |
| { |
| { 848, 480, 33750, 112, 16, 112, 8, 6, 23, |
| OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH, |
| false, }, |
| { 0xE, HDMI_DVI }, |
| }, |
| { |
| { 1280, 768, 79500, 128, 64, 192, 7, 3, 20, |
| OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_LOW, |
| false, }, |
| { 0x17, HDMI_DVI }, |
| }, |
| { |
| { 1280, 800, 83500, 128, 72, 200, 6, 3, 22, |
| OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_LOW, |
| false, }, |
| { 0x1C, HDMI_DVI }, |
| }, |
| { |
| { 1360, 768, 85500, 112, 64, 256, 6, 3, 18, |
| OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH, |
| false, }, |
| { 0x27, HDMI_DVI }, |
| }, |
| { |
| { 1280, 960, 108000, 112, 96, 312, 3, 1, 36, |
| OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH, |
| false, }, |
| { 0x20, HDMI_DVI }, |
| }, |
| { |
| { 1280, 1024, 108000, 112, 48, 248, 3, 1, 38, |
| OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH, |
| false, }, |
| { 0x23, HDMI_DVI }, |
| }, |
| { |
| { 1024, 768, 65000, 136, 24, 160, 6, 3, 29, |
| OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW, |
| false, }, |
| { 0x10, HDMI_DVI }, |
| }, |
| { |
| { 1400, 1050, 121750, 144, 88, 232, 4, 3, 32, |
| OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_LOW, |
| false, }, |
| { 0x2A, HDMI_DVI }, |
| }, |
| { |
| { 1440, 900, 106500, 152, 80, 232, 6, 3, 25, |
| OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_LOW, |
| false, }, |
| { 0x2F, HDMI_DVI }, |
| }, |
| { |
| { 1680, 1050, 146250, 176 , 104, 280, 6, 3, 30, |
| OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_LOW, |
| false, }, |
| { 0x3A, HDMI_DVI }, |
| }, |
| { |
| { 1366, 768, 85500, 143, 70, 213, 3, 3, 24, |
| OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH, |
| false, }, |
| { 0x51, HDMI_DVI }, |
| }, |
| { |
| { 1920, 1080, 148500, 44, 148, 80, 5, 4, 36, |
| OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH, |
| false, }, |
| { 0x52, HDMI_DVI }, |
| }, |
| { |
| { 1280, 768, 68250, 32, 48, 80, 7, 3, 12, |
| OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_HIGH, |
| false, }, |
| { 0x16, HDMI_DVI }, |
| }, |
| { |
| { 1400, 1050, 101000, 32, 48, 80, 4, 3, 23, |
| OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_HIGH, |
| false, }, |
| { 0x29, HDMI_DVI }, |
| }, |
| { |
| { 1680, 1050, 119000, 32, 48, 80, 6, 3, 21, |
| OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_HIGH, |
| false, }, |
| { 0x39, HDMI_DVI }, |
| }, |
| { |
| { 1280, 800, 79500, 32, 48, 80, 6, 3, 14, |
| OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_HIGH, |
| false, }, |
| { 0x1B, HDMI_DVI }, |
| }, |
| { |
| { 1280, 720, 74250, 40, 110, 220, 5, 5, 20, |
| OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH, |
| false, }, |
| { 0x55, HDMI_DVI }, |
| }, |
| { |
| { 1920, 1200, 154000, 32, 48, 80, 6, 3, 26, |
| OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_HIGH, |
| false, }, |
| { 0x44, HDMI_DVI }, |
| }, |
| }; |
| |
| static int hdmi_runtime_get(void) |
| { |
| int r; |
| |
| DSSDBG("hdmi_runtime_get\n"); |
| |
| r = pm_runtime_get_sync(&hdmi.pdev->dev); |
| WARN_ON(r < 0); |
| if (r < 0) |
| return r; |
| |
| return 0; |
| } |
| |
| static void hdmi_runtime_put(void) |
| { |
| int r; |
| |
| DSSDBG("hdmi_runtime_put\n"); |
| |
| r = pm_runtime_put_sync(&hdmi.pdev->dev); |
| WARN_ON(r < 0 && r != -ENOSYS); |
| } |
| |
| static int hdmi_init_regulator(void) |
| { |
| struct regulator *reg; |
| |
| if (hdmi.vdda_hdmi_dac_reg != NULL) |
| return 0; |
| |
| reg = devm_regulator_get(&hdmi.pdev->dev, "vdda_hdmi_dac"); |
| |
| /* DT HACK: try VDAC to make omapdss work for o4 sdp/panda */ |
| if (IS_ERR(reg)) |
| reg = devm_regulator_get(&hdmi.pdev->dev, "VDAC"); |
| |
| if (IS_ERR(reg)) { |
| DSSERR("can't get VDDA_HDMI_DAC regulator\n"); |
| return PTR_ERR(reg); |
| } |
| |
| hdmi.vdda_hdmi_dac_reg = reg; |
| |
| return 0; |
| } |
| |
| static int hdmi_init_display(struct omap_dss_device *dssdev) |
| { |
| int r; |
| |
| struct gpio gpios[] = { |
| { hdmi.ct_cp_hpd_gpio, GPIOF_OUT_INIT_LOW, "hdmi_ct_cp_hpd" }, |
| { hdmi.ls_oe_gpio, GPIOF_OUT_INIT_LOW, "hdmi_ls_oe" }, |
| { hdmi.hpd_gpio, GPIOF_DIR_IN, "hdmi_hpd" }, |
| }; |
| |
| DSSDBG("init_display\n"); |
| |
| dss_init_hdmi_ip_ops(&hdmi.ip_data, omapdss_get_version()); |
| |
| r = hdmi_init_regulator(); |
| if (r) |
| return r; |
| |
| r = gpio_request_array(gpios, ARRAY_SIZE(gpios)); |
| if (r) |
| return r; |
| |
| return 0; |
| } |
| |
| static void hdmi_uninit_display(struct omap_dss_device *dssdev) |
| { |
| DSSDBG("uninit_display\n"); |
| |
| gpio_free(hdmi.ct_cp_hpd_gpio); |
| gpio_free(hdmi.ls_oe_gpio); |
| gpio_free(hdmi.hpd_gpio); |
| } |
| |
| static const struct hdmi_config *hdmi_find_timing( |
| const struct hdmi_config *timings_arr, |
| int len) |
| { |
| int i; |
| |
| for (i = 0; i < len; i++) { |
| if (timings_arr[i].cm.code == hdmi.ip_data.cfg.cm.code) |
| return &timings_arr[i]; |
| } |
| return NULL; |
| } |
| |
| static const struct hdmi_config *hdmi_get_timings(void) |
| { |
| const struct hdmi_config *arr; |
| int len; |
| |
| if (hdmi.ip_data.cfg.cm.mode == HDMI_DVI) { |
| arr = vesa_timings; |
| len = ARRAY_SIZE(vesa_timings); |
| } else { |
| arr = cea_timings; |
| len = ARRAY_SIZE(cea_timings); |
| } |
| |
| return hdmi_find_timing(arr, len); |
| } |
| |
| static bool hdmi_timings_compare(struct omap_video_timings *timing1, |
| const struct omap_video_timings *timing2) |
| { |
| int timing1_vsync, timing1_hsync, timing2_vsync, timing2_hsync; |
| |
| if ((DIV_ROUND_CLOSEST(timing2->pixel_clock, 1000) == |
| DIV_ROUND_CLOSEST(timing1->pixel_clock, 1000)) && |
| (timing2->x_res == timing1->x_res) && |
| (timing2->y_res == timing1->y_res)) { |
| |
| timing2_hsync = timing2->hfp + timing2->hsw + timing2->hbp; |
| timing1_hsync = timing1->hfp + timing1->hsw + timing1->hbp; |
| timing2_vsync = timing2->vfp + timing2->vsw + timing2->vbp; |
| timing1_vsync = timing2->vfp + timing2->vsw + timing2->vbp; |
| |
| DSSDBG("timing1_hsync = %d timing1_vsync = %d"\ |
| "timing2_hsync = %d timing2_vsync = %d\n", |
| timing1_hsync, timing1_vsync, |
| timing2_hsync, timing2_vsync); |
| |
| if ((timing1_hsync == timing2_hsync) && |
| (timing1_vsync == timing2_vsync)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| static struct hdmi_cm hdmi_get_code(struct omap_video_timings *timing) |
| { |
| int i; |
| struct hdmi_cm cm = {-1}; |
| DSSDBG("hdmi_get_code\n"); |
| |
| for (i = 0; i < ARRAY_SIZE(cea_timings); i++) { |
| if (hdmi_timings_compare(timing, &cea_timings[i].timings)) { |
| cm = cea_timings[i].cm; |
| goto end; |
| } |
| } |
| for (i = 0; i < ARRAY_SIZE(vesa_timings); i++) { |
| if (hdmi_timings_compare(timing, &vesa_timings[i].timings)) { |
| cm = vesa_timings[i].cm; |
| goto end; |
| } |
| } |
| |
| end: return cm; |
| |
| } |
| |
| unsigned long hdmi_get_pixel_clock(void) |
| { |
| /* HDMI Pixel Clock in Mhz */ |
| return hdmi.ip_data.cfg.timings.pixel_clock * 1000; |
| } |
| |
| static void hdmi_compute_pll(struct omap_dss_device *dssdev, int phy, |
| struct hdmi_pll_info *pi) |
| { |
| unsigned long clkin, refclk; |
| u32 mf; |
| |
| clkin = clk_get_rate(hdmi.sys_clk) / 10000; |
| /* |
| * Input clock is predivided by N + 1 |
| * out put of which is reference clk |
| */ |
| |
| pi->regn = HDMI_DEFAULT_REGN; |
| |
| refclk = clkin / pi->regn; |
| |
| pi->regm2 = HDMI_DEFAULT_REGM2; |
| |
| /* |
| * multiplier is pixel_clk/ref_clk |
| * Multiplying by 100 to avoid fractional part removal |
| */ |
| pi->regm = phy * pi->regm2 / refclk; |
| |
| /* |
| * fractional multiplier is remainder of the difference between |
| * multiplier and actual phy(required pixel clock thus should be |
| * multiplied by 2^18(262144) divided by the reference clock |
| */ |
| mf = (phy - pi->regm / pi->regm2 * refclk) * 262144; |
| pi->regmf = pi->regm2 * mf / refclk; |
| |
| /* |
| * Dcofreq should be set to 1 if required pixel clock |
| * is greater than 1000MHz |
| */ |
| pi->dcofreq = phy > 1000 * 100; |
| pi->regsd = ((pi->regm * clkin / 10) / (pi->regn * 250) + 5) / 10; |
| |
| /* Set the reference clock to sysclk reference */ |
| pi->refsel = HDMI_REFSEL_SYSCLK; |
| |
| DSSDBG("M = %d Mf = %d\n", pi->regm, pi->regmf); |
| DSSDBG("range = %d sd = %d\n", pi->dcofreq, pi->regsd); |
| } |
| |
| static int hdmi_power_on_core(struct omap_dss_device *dssdev) |
| { |
| int r; |
| |
| gpio_set_value(hdmi.ct_cp_hpd_gpio, 1); |
| gpio_set_value(hdmi.ls_oe_gpio, 1); |
| |
| /* wait 300us after CT_CP_HPD for the 5V power output to reach 90% */ |
| udelay(300); |
| |
| r = regulator_enable(hdmi.vdda_hdmi_dac_reg); |
| if (r) |
| goto err_vdac_enable; |
| |
| r = hdmi_runtime_get(); |
| if (r) |
| goto err_runtime_get; |
| |
| /* Make selection of HDMI in DSS */ |
| dss_select_hdmi_venc_clk_source(DSS_HDMI_M_PCLK); |
| |
| return 0; |
| |
| err_runtime_get: |
| regulator_disable(hdmi.vdda_hdmi_dac_reg); |
| err_vdac_enable: |
| gpio_set_value(hdmi.ct_cp_hpd_gpio, 0); |
| gpio_set_value(hdmi.ls_oe_gpio, 0); |
| return r; |
| } |
| |
| static void hdmi_power_off_core(struct omap_dss_device *dssdev) |
| { |
| hdmi_runtime_put(); |
| regulator_disable(hdmi.vdda_hdmi_dac_reg); |
| gpio_set_value(hdmi.ct_cp_hpd_gpio, 0); |
| gpio_set_value(hdmi.ls_oe_gpio, 0); |
| } |
| |
| static int hdmi_power_on_full(struct omap_dss_device *dssdev) |
| { |
| int r; |
| struct omap_video_timings *p; |
| struct omap_overlay_manager *mgr = hdmi.output.manager; |
| unsigned long phy; |
| |
| r = hdmi_power_on_core(dssdev); |
| if (r) |
| return r; |
| |
| dss_mgr_disable(mgr); |
| |
| p = &hdmi.ip_data.cfg.timings; |
| |
| DSSDBG("hdmi_power_on x_res= %d y_res = %d\n", p->x_res, p->y_res); |
| |
| phy = p->pixel_clock; |
| |
| hdmi_compute_pll(dssdev, phy, &hdmi.ip_data.pll_data); |
| |
| hdmi.ip_data.ops->video_disable(&hdmi.ip_data); |
| |
| /* config the PLL and PHY hdmi_set_pll_pwrfirst */ |
| r = hdmi.ip_data.ops->pll_enable(&hdmi.ip_data); |
| if (r) { |
| DSSDBG("Failed to lock PLL\n"); |
| goto err_pll_enable; |
| } |
| |
| r = hdmi.ip_data.ops->phy_enable(&hdmi.ip_data); |
| if (r) { |
| DSSDBG("Failed to start PHY\n"); |
| goto err_phy_enable; |
| } |
| |
| hdmi.ip_data.ops->video_configure(&hdmi.ip_data); |
| |
| /* bypass TV gamma table */ |
| dispc_enable_gamma_table(0); |
| |
| /* tv size */ |
| dss_mgr_set_timings(mgr, p); |
| |
| r = hdmi.ip_data.ops->video_enable(&hdmi.ip_data); |
| if (r) |
| goto err_vid_enable; |
| |
| r = dss_mgr_enable(mgr); |
| if (r) |
| goto err_mgr_enable; |
| |
| return 0; |
| |
| err_mgr_enable: |
| hdmi.ip_data.ops->video_disable(&hdmi.ip_data); |
| err_vid_enable: |
| hdmi.ip_data.ops->phy_disable(&hdmi.ip_data); |
| err_phy_enable: |
| hdmi.ip_data.ops->pll_disable(&hdmi.ip_data); |
| err_pll_enable: |
| hdmi_power_off_core(dssdev); |
| return -EIO; |
| } |
| |
| static void hdmi_power_off_full(struct omap_dss_device *dssdev) |
| { |
| struct omap_overlay_manager *mgr = hdmi.output.manager; |
| |
| dss_mgr_disable(mgr); |
| |
| hdmi.ip_data.ops->video_disable(&hdmi.ip_data); |
| hdmi.ip_data.ops->phy_disable(&hdmi.ip_data); |
| hdmi.ip_data.ops->pll_disable(&hdmi.ip_data); |
| |
| hdmi_power_off_core(dssdev); |
| } |
| |
| int omapdss_hdmi_display_check_timing(struct omap_dss_device *dssdev, |
| struct omap_video_timings *timings) |
| { |
| struct hdmi_cm cm; |
| |
| cm = hdmi_get_code(timings); |
| if (cm.code == -1) { |
| return -EINVAL; |
| } |
| |
| return 0; |
| |
| } |
| |
| void omapdss_hdmi_display_set_timing(struct omap_dss_device *dssdev, |
| struct omap_video_timings *timings) |
| { |
| struct hdmi_cm cm; |
| const struct hdmi_config *t; |
| |
| mutex_lock(&hdmi.lock); |
| |
| cm = hdmi_get_code(timings); |
| hdmi.ip_data.cfg.cm = cm; |
| |
| t = hdmi_get_timings(); |
| if (t != NULL) |
| hdmi.ip_data.cfg = *t; |
| |
| mutex_unlock(&hdmi.lock); |
| } |
| |
| static void hdmi_dump_regs(struct seq_file *s) |
| { |
| mutex_lock(&hdmi.lock); |
| |
| if (hdmi_runtime_get()) { |
| mutex_unlock(&hdmi.lock); |
| return; |
| } |
| |
| hdmi.ip_data.ops->dump_wrapper(&hdmi.ip_data, s); |
| hdmi.ip_data.ops->dump_pll(&hdmi.ip_data, s); |
| hdmi.ip_data.ops->dump_phy(&hdmi.ip_data, s); |
| hdmi.ip_data.ops->dump_core(&hdmi.ip_data, s); |
| |
| hdmi_runtime_put(); |
| mutex_unlock(&hdmi.lock); |
| } |
| |
| int omapdss_hdmi_read_edid(u8 *buf, int len) |
| { |
| int r; |
| |
| mutex_lock(&hdmi.lock); |
| |
| r = hdmi_runtime_get(); |
| BUG_ON(r); |
| |
| r = hdmi.ip_data.ops->read_edid(&hdmi.ip_data, buf, len); |
| |
| hdmi_runtime_put(); |
| mutex_unlock(&hdmi.lock); |
| |
| return r; |
| } |
| |
| bool omapdss_hdmi_detect(void) |
| { |
| int r; |
| |
| mutex_lock(&hdmi.lock); |
| |
| r = hdmi_runtime_get(); |
| BUG_ON(r); |
| |
| r = hdmi.ip_data.ops->detect(&hdmi.ip_data); |
| |
| hdmi_runtime_put(); |
| mutex_unlock(&hdmi.lock); |
| |
| return r == 1; |
| } |
| |
| int omapdss_hdmi_display_enable(struct omap_dss_device *dssdev) |
| { |
| struct omap_dss_device *out = &hdmi.output; |
| int r = 0; |
| |
| DSSDBG("ENTER hdmi_display_enable\n"); |
| |
| mutex_lock(&hdmi.lock); |
| |
| if (out == NULL || out->manager == NULL) { |
| DSSERR("failed to enable display: no output/manager\n"); |
| r = -ENODEV; |
| goto err0; |
| } |
| |
| hdmi.ip_data.hpd_gpio = hdmi.hpd_gpio; |
| |
| r = hdmi_power_on_full(dssdev); |
| if (r) { |
| DSSERR("failed to power on device\n"); |
| goto err0; |
| } |
| |
| mutex_unlock(&hdmi.lock); |
| return 0; |
| |
| err0: |
| mutex_unlock(&hdmi.lock); |
| return r; |
| } |
| |
| void omapdss_hdmi_display_disable(struct omap_dss_device *dssdev) |
| { |
| DSSDBG("Enter hdmi_display_disable\n"); |
| |
| mutex_lock(&hdmi.lock); |
| |
| hdmi_power_off_full(dssdev); |
| |
| mutex_unlock(&hdmi.lock); |
| } |
| |
| int omapdss_hdmi_core_enable(struct omap_dss_device *dssdev) |
| { |
| int r = 0; |
| |
| DSSDBG("ENTER omapdss_hdmi_core_enable\n"); |
| |
| mutex_lock(&hdmi.lock); |
| |
| hdmi.ip_data.hpd_gpio = hdmi.hpd_gpio; |
| |
| r = hdmi_power_on_core(dssdev); |
| if (r) { |
| DSSERR("failed to power on device\n"); |
| goto err0; |
| } |
| |
| mutex_unlock(&hdmi.lock); |
| return 0; |
| |
| err0: |
| mutex_unlock(&hdmi.lock); |
| return r; |
| } |
| |
| void omapdss_hdmi_core_disable(struct omap_dss_device *dssdev) |
| { |
| DSSDBG("Enter omapdss_hdmi_core_disable\n"); |
| |
| mutex_lock(&hdmi.lock); |
| |
| hdmi_power_off_core(dssdev); |
| |
| mutex_unlock(&hdmi.lock); |
| } |
| |
| static int hdmi_get_clocks(struct platform_device *pdev) |
| { |
| struct clk *clk; |
| |
| clk = devm_clk_get(&pdev->dev, "sys_clk"); |
| if (IS_ERR(clk)) { |
| DSSERR("can't get sys_clk\n"); |
| return PTR_ERR(clk); |
| } |
| |
| hdmi.sys_clk = clk; |
| |
| return 0; |
| } |
| |
| #if defined(CONFIG_OMAP4_DSS_HDMI_AUDIO) |
| int hdmi_compute_acr(u32 sample_freq, u32 *n, u32 *cts) |
| { |
| u32 deep_color; |
| bool deep_color_correct = false; |
| u32 pclk = hdmi.ip_data.cfg.timings.pixel_clock; |
| |
| if (n == NULL || cts == NULL) |
| return -EINVAL; |
| |
| /* TODO: When implemented, query deep color mode here. */ |
| deep_color = 100; |
| |
| /* |
| * When using deep color, the default N value (as in the HDMI |
| * specification) yields to an non-integer CTS. Hence, we |
| * modify it while keeping the restrictions described in |
| * section 7.2.1 of the HDMI 1.4a specification. |
| */ |
| switch (sample_freq) { |
| case 32000: |
| case 48000: |
| case 96000: |
| case 192000: |
| if (deep_color == 125) |
| if (pclk == 27027 || pclk == 74250) |
| deep_color_correct = true; |
| if (deep_color == 150) |
| if (pclk == 27027) |
| deep_color_correct = true; |
| break; |
| case 44100: |
| case 88200: |
| case 176400: |
| if (deep_color == 125) |
| if (pclk == 27027) |
| deep_color_correct = true; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| if (deep_color_correct) { |
| switch (sample_freq) { |
| case 32000: |
| *n = 8192; |
| break; |
| case 44100: |
| *n = 12544; |
| break; |
| case 48000: |
| *n = 8192; |
| break; |
| case 88200: |
| *n = 25088; |
| break; |
| case 96000: |
| *n = 16384; |
| break; |
| case 176400: |
| *n = 50176; |
| break; |
| case 192000: |
| *n = 32768; |
| break; |
| default: |
| return -EINVAL; |
| } |
| } else { |
| switch (sample_freq) { |
| case 32000: |
| *n = 4096; |
| break; |
| case 44100: |
| *n = 6272; |
| break; |
| case 48000: |
| *n = 6144; |
| break; |
| case 88200: |
| *n = 12544; |
| break; |
| case 96000: |
| *n = 12288; |
| break; |
| case 176400: |
| *n = 25088; |
| break; |
| case 192000: |
| *n = 24576; |
| break; |
| default: |
| return -EINVAL; |
| } |
| } |
| /* Calculate CTS. See HDMI 1.3a or 1.4a specifications */ |
| *cts = pclk * (*n / 128) * deep_color / (sample_freq / 10); |
| |
| return 0; |
| } |
| |
| int hdmi_audio_enable(void) |
| { |
| DSSDBG("audio_enable\n"); |
| |
| return hdmi.ip_data.ops->audio_enable(&hdmi.ip_data); |
| } |
| |
| void hdmi_audio_disable(void) |
| { |
| DSSDBG("audio_disable\n"); |
| |
| hdmi.ip_data.ops->audio_disable(&hdmi.ip_data); |
| } |
| |
| int hdmi_audio_start(void) |
| { |
| DSSDBG("audio_start\n"); |
| |
| return hdmi.ip_data.ops->audio_start(&hdmi.ip_data); |
| } |
| |
| void hdmi_audio_stop(void) |
| { |
| DSSDBG("audio_stop\n"); |
| |
| hdmi.ip_data.ops->audio_stop(&hdmi.ip_data); |
| } |
| |
| bool hdmi_mode_has_audio(void) |
| { |
| if (hdmi.ip_data.cfg.cm.mode == HDMI_HDMI) |
| return true; |
| else |
| return false; |
| } |
| |
| int hdmi_audio_config(struct omap_dss_audio *audio) |
| { |
| return hdmi.ip_data.ops->audio_config(&hdmi.ip_data, audio); |
| } |
| |
| #endif |
| |
| static struct omap_dss_device *hdmi_find_dssdev(struct platform_device *pdev) |
| { |
| struct omap_dss_board_info *pdata = pdev->dev.platform_data; |
| const char *def_disp_name = omapdss_get_default_display_name(); |
| struct omap_dss_device *def_dssdev; |
| int i; |
| |
| def_dssdev = NULL; |
| |
| for (i = 0; i < pdata->num_devices; ++i) { |
| struct omap_dss_device *dssdev = pdata->devices[i]; |
| |
| if (dssdev->type != OMAP_DISPLAY_TYPE_HDMI) |
| continue; |
| |
| if (def_dssdev == NULL) |
| def_dssdev = dssdev; |
| |
| if (def_disp_name != NULL && |
| strcmp(dssdev->name, def_disp_name) == 0) { |
| def_dssdev = dssdev; |
| break; |
| } |
| } |
| |
| return def_dssdev; |
| } |
| |
| static int hdmi_probe_pdata(struct platform_device *pdev) |
| { |
| struct omap_dss_device *plat_dssdev; |
| struct omap_dss_device *dssdev; |
| struct omap_dss_hdmi_data *priv; |
| int r; |
| |
| plat_dssdev = hdmi_find_dssdev(pdev); |
| |
| if (!plat_dssdev) |
| return 0; |
| |
| dssdev = dss_alloc_and_init_device(&pdev->dev); |
| if (!dssdev) |
| return -ENOMEM; |
| |
| dss_copy_device_pdata(dssdev, plat_dssdev); |
| |
| priv = dssdev->data; |
| |
| hdmi.ct_cp_hpd_gpio = priv->ct_cp_hpd_gpio; |
| hdmi.ls_oe_gpio = priv->ls_oe_gpio; |
| hdmi.hpd_gpio = priv->hpd_gpio; |
| |
| r = hdmi_init_display(dssdev); |
| if (r) { |
| DSSERR("device %s init failed: %d\n", dssdev->name, r); |
| dss_put_device(dssdev); |
| return r; |
| } |
| |
| r = omapdss_output_set_device(&hdmi.output, dssdev); |
| if (r) { |
| DSSERR("failed to connect output to new device: %s\n", |
| dssdev->name); |
| dss_put_device(dssdev); |
| return r; |
| } |
| |
| r = dss_add_device(dssdev); |
| if (r) { |
| DSSERR("device %s register failed: %d\n", dssdev->name, r); |
| omapdss_output_unset_device(&hdmi.output); |
| hdmi_uninit_display(dssdev); |
| dss_put_device(dssdev); |
| return r; |
| } |
| |
| return 0; |
| } |
| |
| static void hdmi_init_output(struct platform_device *pdev) |
| { |
| struct omap_dss_device *out = &hdmi.output; |
| |
| out->dev = &pdev->dev; |
| out->id = OMAP_DSS_OUTPUT_HDMI; |
| out->output_type = OMAP_DISPLAY_TYPE_HDMI; |
| out->name = "hdmi.0"; |
| out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT; |
| |
| dss_register_output(out); |
| } |
| |
| static void __exit hdmi_uninit_output(struct platform_device *pdev) |
| { |
| struct omap_dss_device *out = &hdmi.output; |
| |
| dss_unregister_output(out); |
| } |
| |
| /* HDMI HW IP initialisation */ |
| static int omapdss_hdmihw_probe(struct platform_device *pdev) |
| { |
| struct resource *res; |
| int r; |
| |
| hdmi.pdev = pdev; |
| |
| mutex_init(&hdmi.lock); |
| mutex_init(&hdmi.ip_data.lock); |
| |
| res = platform_get_resource(hdmi.pdev, IORESOURCE_MEM, 0); |
| |
| /* Base address taken from platform */ |
| hdmi.ip_data.base_wp = devm_ioremap_resource(&pdev->dev, res); |
| if (IS_ERR(hdmi.ip_data.base_wp)) |
| return PTR_ERR(hdmi.ip_data.base_wp); |
| |
| r = hdmi_get_clocks(pdev); |
| if (r) { |
| DSSERR("can't get clocks\n"); |
| return r; |
| } |
| |
| pm_runtime_enable(&pdev->dev); |
| |
| hdmi.ip_data.core_sys_offset = HDMI_CORE_SYS; |
| hdmi.ip_data.core_av_offset = HDMI_CORE_AV; |
| hdmi.ip_data.pll_offset = HDMI_PLLCTRL; |
| hdmi.ip_data.phy_offset = HDMI_PHY; |
| |
| hdmi_init_output(pdev); |
| |
| r = hdmi_panel_init(); |
| if (r) { |
| DSSERR("can't init panel\n"); |
| return r; |
| } |
| |
| dss_debugfs_create_file("hdmi", hdmi_dump_regs); |
| |
| if (pdev->dev.platform_data) { |
| r = hdmi_probe_pdata(pdev); |
| if (r) |
| goto err_probe; |
| } |
| |
| return 0; |
| |
| err_probe: |
| hdmi_panel_exit(); |
| hdmi_uninit_output(pdev); |
| pm_runtime_disable(&pdev->dev); |
| return r; |
| } |
| |
| static int __exit hdmi_remove_child(struct device *dev, void *data) |
| { |
| struct omap_dss_device *dssdev = to_dss_device(dev); |
| hdmi_uninit_display(dssdev); |
| return 0; |
| } |
| |
| static int __exit omapdss_hdmihw_remove(struct platform_device *pdev) |
| { |
| device_for_each_child(&pdev->dev, NULL, hdmi_remove_child); |
| |
| dss_unregister_child_devices(&pdev->dev); |
| |
| hdmi_panel_exit(); |
| |
| hdmi_uninit_output(pdev); |
| |
| pm_runtime_disable(&pdev->dev); |
| |
| return 0; |
| } |
| |
| static int hdmi_runtime_suspend(struct device *dev) |
| { |
| clk_disable_unprepare(hdmi.sys_clk); |
| |
| dispc_runtime_put(); |
| |
| return 0; |
| } |
| |
| static int hdmi_runtime_resume(struct device *dev) |
| { |
| int r; |
| |
| r = dispc_runtime_get(); |
| if (r < 0) |
| return r; |
| |
| clk_prepare_enable(hdmi.sys_clk); |
| |
| return 0; |
| } |
| |
| static const struct dev_pm_ops hdmi_pm_ops = { |
| .runtime_suspend = hdmi_runtime_suspend, |
| .runtime_resume = hdmi_runtime_resume, |
| }; |
| |
| static struct platform_driver omapdss_hdmihw_driver = { |
| .probe = omapdss_hdmihw_probe, |
| .remove = __exit_p(omapdss_hdmihw_remove), |
| .driver = { |
| .name = "omapdss_hdmi", |
| .owner = THIS_MODULE, |
| .pm = &hdmi_pm_ops, |
| }, |
| }; |
| |
| int __init hdmi_init_platform_driver(void) |
| { |
| return platform_driver_register(&omapdss_hdmihw_driver); |
| } |
| |
| void __exit hdmi_uninit_platform_driver(void) |
| { |
| platform_driver_unregister(&omapdss_hdmihw_driver); |
| } |