diff options
Diffstat (limited to 'drivers/video/omap2/dss/hdmi.c')
| -rw-r--r-- | drivers/video/omap2/dss/hdmi.c | 1184 |
1 files changed, 0 insertions, 1184 deletions
diff --git a/drivers/video/omap2/dss/hdmi.c b/drivers/video/omap2/dss/hdmi.c deleted file mode 100644 index 82a96407499..00000000000 --- a/drivers/video/omap2/dss/hdmi.c +++ /dev/null @@ -1,1184 +0,0 @@ -/* - * 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; - - bool core_enabled; - - 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 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; - -} - -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; - - r = regulator_enable(hdmi.vdda_hdmi_dac_reg); - if (r) - return r; - - 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); - - hdmi.core_enabled = true; - - return 0; - -err_runtime_get: - regulator_disable(hdmi.vdda_hdmi_dac_reg); - - return r; -} - -static void hdmi_power_off_core(struct omap_dss_device *dssdev) -{ - hdmi.core_enabled = false; - - hdmi_runtime_put(); - regulator_disable(hdmi.vdda_hdmi_dac_reg); -} - -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); -} - -static int 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; - -} - -static void 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; - - dispc_set_tv_pclk(t->timings.pixel_clock * 1000); - } - - mutex_unlock(&hdmi.lock); -} - -static void hdmi_display_get_timings(struct omap_dss_device *dssdev, - struct omap_video_timings *timings) -{ - const struct hdmi_config *cfg; - - cfg = hdmi_get_timings(); - if (cfg == NULL) - cfg = &vesa_timings[0]; - - memcpy(timings, &cfg->timings, sizeof(cfg->timings)); -} - -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); -} - -static int 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; -} - -static int 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; - } - - 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; -} - -static void 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); -} - -static int hdmi_core_enable(struct omap_dss_device *dssdev) -{ - int r = 0; - - DSSDBG("ENTER omapdss_hdmi_core_enable\n"); - - mutex_lock(&hdmi.lock); - - 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; -} - -static void 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; -} - -static bool hdmi_mode_has_audio(void) -{ - if (hdmi.ip_data.cfg.cm.mode == HDMI_HDMI) - return true; - else - return false; -} - -#endif - -static int hdmi_connect(struct omap_dss_device *dssdev, - struct omap_dss_device *dst) -{ - struct omap_overlay_manager *mgr; - int r; - - dss_init_hdmi_ip_ops(&hdmi.ip_data, omapdss_get_version()); - - r = hdmi_init_regulator(); - if (r) - return r; - - mgr = omap_dss_get_overlay_manager(dssdev->dispc_channel); - if (!mgr) - return -ENODEV; - - r = dss_mgr_connect(mgr, dssdev); - if (r) - return r; - - r = omapdss_output_set_device(dssdev, dst); - if (r) { - DSSERR("failed to connect output to new device: %s\n", - dst->name); - dss_mgr_disconnect(mgr, dssdev); - return r; - } - - return 0; -} - -static void hdmi_disconnect(struct omap_dss_device *dssdev, - struct omap_dss_device *dst) -{ - WARN_ON(dst != dssdev->dst); - - if (dst != dssdev->dst) - return; - - omapdss_output_unset_device(dssdev); - - if (dssdev->manager) - dss_mgr_disconnect(dssdev->manager, dssdev); -} - -static int hdmi_read_edid(struct omap_dss_device *dssdev, - u8 *edid, int len) -{ - bool need_enable; - int r; - - need_enable = hdmi.core_enabled == false; - - if (need_enable) { - r = hdmi_core_enable(dssdev); - if (r) - return r; - } - - r = read_edid(edid, len); - - if (need_enable) - hdmi_core_disable(dssdev); - - return r; -} - -#if defined(CONFIG_OMAP4_DSS_HDMI_AUDIO) -static int hdmi_audio_enable(struct omap_dss_device *dssdev) -{ - int r; - - mutex_lock(&hdmi.lock); - - if (!hdmi_mode_has_audio()) { - r = -EPERM; - goto err; - } - - - r = hdmi.ip_data.ops->audio_enable(&hdmi.ip_data); - if (r) - goto err; - - mutex_unlock(&hdmi.lock); - return 0; - -err: - mutex_unlock(&hdmi.lock); - return r; -} - -static void hdmi_audio_disable(struct omap_dss_device *dssdev) -{ - hdmi.ip_data.ops->audio_disable(&hdmi.ip_data); -} - -static int hdmi_audio_start(struct omap_dss_device *dssdev) -{ - return hdmi.ip_data.ops->audio_start(&hdmi.ip_data); -} - -static void hdmi_audio_stop(struct omap_dss_device *dssdev) -{ - hdmi.ip_data.ops->audio_stop(&hdmi.ip_data); -} - -static bool hdmi_audio_supported(struct omap_dss_device *dssdev) -{ - bool r; - - mutex_lock(&hdmi.lock); - - r = hdmi_mode_has_audio(); - - mutex_unlock(&hdmi.lock); - return r; -} - -static int hdmi_audio_config(struct omap_dss_device *dssdev, - struct omap_dss_audio *audio) -{ - int r; - - mutex_lock(&hdmi.lock); - - if (!hdmi_mode_has_audio()) { - r = -EPERM; - goto err; - } - - r = hdmi.ip_data.ops->audio_config(&hdmi.ip_data, audio); - if (r) - goto err; - - mutex_unlock(&hdmi.lock); - return 0; - -err: - mutex_unlock(&hdmi.lock); - return r; -} -#else -static int hdmi_audio_enable(struct omap_dss_device *dssdev) -{ - return -EPERM; -} - -static void hdmi_audio_disable(struct omap_dss_device *dssdev) -{ -} - -static int hdmi_audio_start(struct omap_dss_device *dssdev) -{ - return -EPERM; -} - -static void hdmi_audio_stop(struct omap_dss_device *dssdev) -{ -} - -static bool hdmi_audio_supported(struct omap_dss_device *dssdev) -{ - return false; -} - -static int hdmi_audio_config(struct omap_dss_device *dssdev, - struct omap_dss_audio *audio) -{ - return -EPERM; -} -#endif - -static const struct omapdss_hdmi_ops hdmi_ops = { - .connect = hdmi_connect, - .disconnect = hdmi_disconnect, - - .enable = hdmi_display_enable, - .disable = hdmi_display_disable, - - .check_timings = hdmi_display_check_timing, - .set_timings = hdmi_display_set_timing, - .get_timings = hdmi_display_get_timings, - - .read_edid = hdmi_read_edid, - - .audio_enable = hdmi_audio_enable, - .audio_disable = hdmi_audio_disable, - .audio_start = hdmi_audio_start, - .audio_stop = hdmi_audio_stop, - .audio_supported = hdmi_audio_supported, - .audio_config = hdmi_audio_config, -}; - -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; - out->ops.hdmi = &hdmi_ops; - out->owner = THIS_MODULE; - - omapdss_register_output(out); -} - -static void __exit hdmi_uninit_output(struct platform_device *pdev) -{ - struct omap_dss_device *out = &hdmi.output; - - omapdss_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); - - hdmi.ip_data.irq = platform_get_irq(pdev, 0); - if (hdmi.ip_data.irq < 0) { - DSSERR("platform_get_irq failed\n"); - return -ENODEV; - } - - 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); - - dss_debugfs_create_file("hdmi", hdmi_dump_regs); - - return 0; -} - -static int __exit omapdss_hdmihw_remove(struct platform_device *pdev) -{ - 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); -} |