| /* |
| * 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 <video/omapdss.h> |
| #if defined(CONFIG_SND_OMAP_SOC_OMAP4_HDMI) || \ |
| defined(CONFIG_SND_OMAP_SOC_OMAP4_HDMI_MODULE) |
| #include <sound/soc.h> |
| #include <sound/pcm_params.h> |
| #include "ti_hdmi_4xxx_ip.h" |
| #endif |
| |
| #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 omap_display_platform_data *pdata; |
| struct platform_device *pdev; |
| struct hdmi_ip_data ip_data; |
| |
| struct clk *sys_clk; |
| } 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, 0, 0, 0}, {1, HDMI_HDMI} }, |
| { {720, 480, 27027, 62, 16, 60, 6, 9, 30, 0, 0, 0}, {2, HDMI_HDMI} }, |
| { {1280, 720, 74250, 40, 110, 220, 5, 5, 20, 1, 1, 0}, {4, HDMI_HDMI} }, |
| { {1920, 540, 74250, 44, 88, 148, 5, 2, 15, 1, 1, 1}, {5, HDMI_HDMI} }, |
| { {1440, 240, 27027, 124, 38, 114, 3, 4, 15, 0, 0, 1}, {6, HDMI_HDMI} }, |
| { {1920, 1080, 148500, 44, 88, 148, 5, 4, 36, 1, 1, 0}, {16, HDMI_HDMI} }, |
| { {720, 576, 27000, 64, 12, 68, 5, 5, 39, 0, 0, 0}, {17, HDMI_HDMI} }, |
| { {1280, 720, 74250, 40, 440, 220, 5, 5, 20, 1, 1, 0}, {19, HDMI_HDMI} }, |
| { {1920, 540, 74250, 44, 528, 148, 5, 2, 15, 1, 1, 1}, {20, HDMI_HDMI} }, |
| { {1440, 288, 27000, 126, 24, 138, 3, 2, 19, 0, 0, 1}, {21, HDMI_HDMI} }, |
| { {1440, 576, 54000, 128, 24, 136, 5, 5, 39, 0, 0, 0}, {29, HDMI_HDMI} }, |
| { {1920, 1080, 148500, 44, 528, 148, 5, 4, 36, 1, 1, 0}, {31, HDMI_HDMI} }, |
| { {1920, 1080, 74250, 44, 638, 148, 5, 4, 36, 1, 1, 0}, {32, HDMI_HDMI} }, |
| { {2880, 480, 108108, 248, 64, 240, 6, 9, 30, 0, 0, 0}, {35, HDMI_HDMI} }, |
| { {2880, 576, 108000, 256, 48, 272, 5, 5, 39, 0, 0, 0}, {37, HDMI_HDMI} }, |
| }; |
| static const struct hdmi_config vesa_timings[] = { |
| /* VESA From Here */ |
| { {640, 480, 25175, 96, 16, 48, 2 , 11, 31, 0, 0, 0}, {4, HDMI_DVI} }, |
| { {800, 600, 40000, 128, 40, 88, 4 , 1, 23, 1, 1, 0}, {9, HDMI_DVI} }, |
| { {848, 480, 33750, 112, 16, 112, 8 , 6, 23, 1, 1, 0}, {0xE, HDMI_DVI} }, |
| { {1280, 768, 79500, 128, 64, 192, 7 , 3, 20, 1, 0, 0}, {0x17, HDMI_DVI} }, |
| { {1280, 800, 83500, 128, 72, 200, 6 , 3, 22, 1, 0, 0}, {0x1C, HDMI_DVI} }, |
| { {1360, 768, 85500, 112, 64, 256, 6 , 3, 18, 1, 1, 0}, {0x27, HDMI_DVI} }, |
| { {1280, 960, 108000, 112, 96, 312, 3 , 1, 36, 1, 1, 0}, {0x20, HDMI_DVI} }, |
| { {1280, 1024, 108000, 112, 48, 248, 3 , 1, 38, 1, 1, 0}, {0x23, HDMI_DVI} }, |
| { {1024, 768, 65000, 136, 24, 160, 6, 3, 29, 0, 0, 0}, {0x10, HDMI_DVI} }, |
| { {1400, 1050, 121750, 144, 88, 232, 4, 3, 32, 1, 0, 0}, {0x2A, HDMI_DVI} }, |
| { {1440, 900, 106500, 152, 80, 232, 6, 3, 25, 1, 0, 0}, {0x2F, HDMI_DVI} }, |
| { {1680, 1050, 146250, 176 , 104, 280, 6, 3, 30, 1, 0, 0}, {0x3A, HDMI_DVI} }, |
| { {1366, 768, 85500, 143, 70, 213, 3, 3, 24, 1, 1, 0}, {0x51, HDMI_DVI} }, |
| { {1920, 1080, 148500, 44, 148, 80, 5, 4, 36, 1, 1, 0}, {0x52, HDMI_DVI} }, |
| { {1280, 768, 68250, 32, 48, 80, 7, 3, 12, 0, 1, 0}, {0x16, HDMI_DVI} }, |
| { {1400, 1050, 101000, 32, 48, 80, 4, 3, 23, 0, 1, 0}, {0x29, HDMI_DVI} }, |
| { {1680, 1050, 119000, 32, 48, 80, 6, 3, 21, 0, 1, 0}, {0x39, HDMI_DVI} }, |
| { {1280, 800, 79500, 32, 48, 80, 6, 3, 14, 0, 1, 0}, {0x1B, HDMI_DVI} }, |
| { {1280, 720, 74250, 40, 110, 220, 5, 5, 20, 1, 1, 0}, {0x55, HDMI_DVI} } |
| }; |
| |
| static int hdmi_runtime_get(void) |
| { |
| int r; |
| |
| DSSDBG("hdmi_runtime_get\n"); |
| |
| /* |
| * HACK: Add dss_runtime_get() to ensure DSS clock domain is enabled. |
| * This should be removed later. |
| */ |
| r = dss_runtime_get(); |
| if (r < 0) |
| goto err_get_dss; |
| |
| r = pm_runtime_get_sync(&hdmi.pdev->dev); |
| WARN_ON(r < 0); |
| if (r < 0) |
| goto err_get_hdmi; |
| |
| return 0; |
| |
| err_get_hdmi: |
| dss_runtime_put(); |
| err_get_dss: |
| return r; |
| } |
| |
| 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); |
| |
| /* |
| * HACK: This is added to complement the dss_runtime_get() call in |
| * hdmi_runtime_get(). This should be removed later. |
| */ |
| dss_runtime_put(); |
| } |
| |
| int hdmi_init_display(struct omap_dss_device *dssdev) |
| { |
| DSSDBG("init_display\n"); |
| |
| dss_init_hdmi_ip_ops(&hdmi.ip_data); |
| 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 hdmi_video_timings *timing2) |
| { |
| int timing1_vsync, timing1_hsync, timing2_vsync, timing2_hsync; |
| |
| if ((timing2->pixel_clock == timing1->pixel_clock) && |
| (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 |
| */ |
| if (dssdev->clocks.hdmi.regn == 0) |
| pi->regn = HDMI_DEFAULT_REGN; |
| else |
| pi->regn = dssdev->clocks.hdmi.regn; |
| |
| refclk = clkin / pi->regn; |
| |
| /* |
| * multiplier is pixel_clk/ref_clk |
| * Multiplying by 100 to avoid fractional part removal |
| */ |
| pi->regm = (phy * 100 / (refclk)) / 100; |
| |
| if (dssdev->clocks.hdmi.regm2 == 0) |
| pi->regm2 = HDMI_DEFAULT_REGM2; |
| else |
| pi->regm2 = dssdev->clocks.hdmi.regm2; |
| |
| /* |
| * 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 * refclk) * 262144; |
| pi->regmf = 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(struct omap_dss_device *dssdev) |
| { |
| int r; |
| const struct hdmi_config *timing; |
| struct omap_video_timings *p; |
| unsigned long phy; |
| |
| r = hdmi_runtime_get(); |
| if (r) |
| return r; |
| |
| dss_mgr_disable(dssdev->manager); |
| |
| p = &dssdev->panel.timings; |
| |
| DSSDBG("hdmi_power_on x_res= %d y_res = %d\n", |
| dssdev->panel.timings.x_res, |
| dssdev->panel.timings.y_res); |
| |
| timing = hdmi_get_timings(); |
| if (timing == NULL) { |
| /* HDMI code 4 corresponds to 640 * 480 VGA */ |
| hdmi.ip_data.cfg.cm.code = 4; |
| /* DVI mode 1 corresponds to HDMI 0 to DVI */ |
| hdmi.ip_data.cfg.cm.mode = HDMI_DVI; |
| hdmi.ip_data.cfg = vesa_timings[0]; |
| } else { |
| hdmi.ip_data.cfg = *timing; |
| } |
| phy = p->pixel_clock; |
| |
| hdmi_compute_pll(dssdev, phy, &hdmi.ip_data.pll_data); |
| |
| hdmi.ip_data.ops->video_enable(&hdmi.ip_data, 0); |
| |
| /* 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; |
| } |
| |
| r = hdmi.ip_data.ops->phy_enable(&hdmi.ip_data); |
| if (r) { |
| DSSDBG("Failed to start PHY\n"); |
| goto err; |
| } |
| |
| hdmi.ip_data.ops->video_configure(&hdmi.ip_data); |
| |
| /* Make selection of HDMI in DSS */ |
| dss_select_hdmi_venc_clk_source(DSS_HDMI_M_PCLK); |
| |
| /* Select the dispc clock source as PRCM clock, to ensure that it is not |
| * DSI PLL source as the clock selected by DSI PLL might not be |
| * sufficient for the resolution selected / that can be changed |
| * dynamically by user. This can be moved to single location , say |
| * Boardfile. |
| */ |
| dss_select_dispc_clk_source(dssdev->clocks.dispc.dispc_fclk_src); |
| |
| /* bypass TV gamma table */ |
| dispc_enable_gamma_table(0); |
| |
| /* tv size */ |
| dispc_set_digit_size(dssdev->panel.timings.x_res, |
| dssdev->panel.timings.y_res); |
| |
| hdmi.ip_data.ops->video_enable(&hdmi.ip_data, 1); |
| |
| r = dss_mgr_enable(dssdev->manager); |
| if (r) |
| goto err_mgr_enable; |
| |
| return 0; |
| |
| err_mgr_enable: |
| hdmi.ip_data.ops->video_enable(&hdmi.ip_data, 0); |
| hdmi.ip_data.ops->phy_disable(&hdmi.ip_data); |
| hdmi.ip_data.ops->pll_disable(&hdmi.ip_data); |
| err: |
| hdmi_runtime_put(); |
| return -EIO; |
| } |
| |
| static void hdmi_power_off(struct omap_dss_device *dssdev) |
| { |
| dss_mgr_disable(dssdev->manager); |
| |
| hdmi.ip_data.ops->video_enable(&hdmi.ip_data, 0); |
| hdmi.ip_data.ops->phy_disable(&hdmi.ip_data); |
| hdmi.ip_data.ops->pll_disable(&hdmi.ip_data); |
| hdmi_runtime_put(); |
| } |
| |
| 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 hdmi_cm cm; |
| |
| cm = hdmi_get_code(&dssdev->panel.timings); |
| hdmi.ip_data.cfg.cm.code = cm.code; |
| hdmi.ip_data.cfg.cm.mode = cm.mode; |
| |
| if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) { |
| int r; |
| |
| hdmi_power_off(dssdev); |
| |
| r = hdmi_power_on(dssdev); |
| if (r) |
| DSSERR("failed to power on device\n"); |
| } |
| } |
| |
| void hdmi_dump_regs(struct seq_file *s) |
| { |
| mutex_lock(&hdmi.lock); |
| |
| if (hdmi_runtime_get()) |
| 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_hdmi_data *priv = dssdev->data; |
| int r = 0; |
| |
| DSSDBG("ENTER hdmi_display_enable\n"); |
| |
| mutex_lock(&hdmi.lock); |
| |
| if (dssdev->manager == NULL) { |
| DSSERR("failed to enable display: no manager\n"); |
| r = -ENODEV; |
| goto err0; |
| } |
| |
| hdmi.ip_data.hpd_gpio = priv->hpd_gpio; |
| |
| r = omap_dss_start_device(dssdev); |
| if (r) { |
| DSSERR("failed to start device\n"); |
| goto err0; |
| } |
| |
| if (dssdev->platform_enable) { |
| r = dssdev->platform_enable(dssdev); |
| if (r) { |
| DSSERR("failed to enable GPIO's\n"); |
| goto err1; |
| } |
| } |
| |
| r = hdmi_power_on(dssdev); |
| if (r) { |
| DSSERR("failed to power on device\n"); |
| goto err2; |
| } |
| |
| mutex_unlock(&hdmi.lock); |
| return 0; |
| |
| err2: |
| if (dssdev->platform_disable) |
| dssdev->platform_disable(dssdev); |
| err1: |
| omap_dss_stop_device(dssdev); |
| 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(dssdev); |
| |
| if (dssdev->platform_disable) |
| dssdev->platform_disable(dssdev); |
| |
| omap_dss_stop_device(dssdev); |
| |
| mutex_unlock(&hdmi.lock); |
| } |
| |
| #if defined(CONFIG_SND_OMAP_SOC_OMAP4_HDMI) || \ |
| defined(CONFIG_SND_OMAP_SOC_OMAP4_HDMI_MODULE) |
| |
| static int hdmi_audio_trigger(struct snd_pcm_substream *substream, int cmd, |
| struct snd_soc_dai *dai) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_codec *codec = rtd->codec; |
| struct platform_device *pdev = to_platform_device(codec->dev); |
| struct hdmi_ip_data *ip_data = snd_soc_codec_get_drvdata(codec); |
| int err = 0; |
| |
| if (!(ip_data->ops) && !(ip_data->ops->audio_enable)) { |
| dev_err(&pdev->dev, "Cannot enable/disable audio\n"); |
| return -ENODEV; |
| } |
| |
| switch (cmd) { |
| case SNDRV_PCM_TRIGGER_START: |
| case SNDRV_PCM_TRIGGER_RESUME: |
| case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
| ip_data->ops->audio_enable(ip_data, true); |
| break; |
| case SNDRV_PCM_TRIGGER_STOP: |
| case SNDRV_PCM_TRIGGER_SUSPEND: |
| case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
| ip_data->ops->audio_enable(ip_data, false); |
| break; |
| default: |
| err = -EINVAL; |
| } |
| return err; |
| } |
| |
| static int hdmi_audio_hw_params(struct snd_pcm_substream *substream, |
| struct snd_pcm_hw_params *params, |
| struct snd_soc_dai *dai) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_codec *codec = rtd->codec; |
| struct hdmi_ip_data *ip_data = snd_soc_codec_get_drvdata(codec); |
| struct hdmi_audio_format audio_format; |
| struct hdmi_audio_dma audio_dma; |
| struct hdmi_core_audio_config core_cfg; |
| struct hdmi_core_infoframe_audio aud_if_cfg; |
| int err, n, cts; |
| enum hdmi_core_audio_sample_freq sample_freq; |
| |
| switch (params_format(params)) { |
| case SNDRV_PCM_FORMAT_S16_LE: |
| core_cfg.i2s_cfg.word_max_length = |
| HDMI_AUDIO_I2S_MAX_WORD_20BITS; |
| core_cfg.i2s_cfg.word_length = HDMI_AUDIO_I2S_CHST_WORD_16_BITS; |
| core_cfg.i2s_cfg.in_length_bits = |
| HDMI_AUDIO_I2S_INPUT_LENGTH_16; |
| core_cfg.i2s_cfg.justification = HDMI_AUDIO_JUSTIFY_LEFT; |
| audio_format.samples_per_word = HDMI_AUDIO_ONEWORD_TWOSAMPLES; |
| audio_format.sample_size = HDMI_AUDIO_SAMPLE_16BITS; |
| audio_format.justification = HDMI_AUDIO_JUSTIFY_LEFT; |
| audio_dma.transfer_size = 0x10; |
| break; |
| case SNDRV_PCM_FORMAT_S24_LE: |
| core_cfg.i2s_cfg.word_max_length = |
| HDMI_AUDIO_I2S_MAX_WORD_24BITS; |
| core_cfg.i2s_cfg.word_length = HDMI_AUDIO_I2S_CHST_WORD_24_BITS; |
| core_cfg.i2s_cfg.in_length_bits = |
| HDMI_AUDIO_I2S_INPUT_LENGTH_24; |
| audio_format.samples_per_word = HDMI_AUDIO_ONEWORD_ONESAMPLE; |
| audio_format.sample_size = HDMI_AUDIO_SAMPLE_24BITS; |
| audio_format.justification = HDMI_AUDIO_JUSTIFY_RIGHT; |
| core_cfg.i2s_cfg.justification = HDMI_AUDIO_JUSTIFY_RIGHT; |
| audio_dma.transfer_size = 0x20; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| switch (params_rate(params)) { |
| case 32000: |
| sample_freq = HDMI_AUDIO_FS_32000; |
| break; |
| case 44100: |
| sample_freq = HDMI_AUDIO_FS_44100; |
| break; |
| case 48000: |
| sample_freq = HDMI_AUDIO_FS_48000; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| err = hdmi_config_audio_acr(ip_data, params_rate(params), &n, &cts); |
| if (err < 0) |
| return err; |
| |
| /* Audio wrapper config */ |
| audio_format.stereo_channels = HDMI_AUDIO_STEREO_ONECHANNEL; |
| audio_format.active_chnnls_msk = 0x03; |
| audio_format.type = HDMI_AUDIO_TYPE_LPCM; |
| audio_format.sample_order = HDMI_AUDIO_SAMPLE_LEFT_FIRST; |
| /* Disable start/stop signals of IEC 60958 blocks */ |
| audio_format.en_sig_blk_strt_end = HDMI_AUDIO_BLOCK_SIG_STARTEND_OFF; |
| |
| audio_dma.block_size = 0xC0; |
| audio_dma.mode = HDMI_AUDIO_TRANSF_DMA; |
| audio_dma.fifo_threshold = 0x20; /* in number of samples */ |
| |
| hdmi_wp_audio_config_dma(ip_data, &audio_dma); |
| hdmi_wp_audio_config_format(ip_data, &audio_format); |
| |
| /* |
| * I2S config |
| */ |
| core_cfg.i2s_cfg.en_high_bitrate_aud = false; |
| /* Only used with high bitrate audio */ |
| core_cfg.i2s_cfg.cbit_order = false; |
| /* Serial data and word select should change on sck rising edge */ |
| core_cfg.i2s_cfg.sck_edge_mode = HDMI_AUDIO_I2S_SCK_EDGE_RISING; |
| core_cfg.i2s_cfg.vbit = HDMI_AUDIO_I2S_VBIT_FOR_PCM; |
| /* Set I2S word select polarity */ |
| core_cfg.i2s_cfg.ws_polarity = HDMI_AUDIO_I2S_WS_POLARITY_LOW_IS_LEFT; |
| core_cfg.i2s_cfg.direction = HDMI_AUDIO_I2S_MSB_SHIFTED_FIRST; |
| /* Set serial data to word select shift. See Phillips spec. */ |
| core_cfg.i2s_cfg.shift = HDMI_AUDIO_I2S_FIRST_BIT_SHIFT; |
| /* Enable one of the four available serial data channels */ |
| core_cfg.i2s_cfg.active_sds = HDMI_AUDIO_I2S_SD0_EN; |
| |
| /* Core audio config */ |
| core_cfg.freq_sample = sample_freq; |
| core_cfg.n = n; |
| core_cfg.cts = cts; |
| if (dss_has_feature(FEAT_HDMI_CTS_SWMODE)) { |
| core_cfg.aud_par_busclk = 0; |
| core_cfg.cts_mode = HDMI_AUDIO_CTS_MODE_SW; |
| core_cfg.use_mclk = dss_has_feature(FEAT_HDMI_AUDIO_USE_MCLK); |
| } else { |
| core_cfg.aud_par_busclk = (((128 * 31) - 1) << 8); |
| core_cfg.cts_mode = HDMI_AUDIO_CTS_MODE_HW; |
| core_cfg.use_mclk = true; |
| } |
| |
| if (core_cfg.use_mclk) |
| core_cfg.mclk_mode = HDMI_AUDIO_MCLK_128FS; |
| core_cfg.layout = HDMI_AUDIO_LAYOUT_2CH; |
| core_cfg.en_spdif = false; |
| /* Use sample frequency from channel status word */ |
| core_cfg.fs_override = true; |
| /* Enable ACR packets */ |
| core_cfg.en_acr_pkt = true; |
| /* Disable direct streaming digital audio */ |
| core_cfg.en_dsd_audio = false; |
| /* Use parallel audio interface */ |
| core_cfg.en_parallel_aud_input = true; |
| |
| hdmi_core_audio_config(ip_data, &core_cfg); |
| |
| /* |
| * Configure packet |
| * info frame audio see doc CEA861-D page 74 |
| */ |
| aud_if_cfg.db1_coding_type = HDMI_INFOFRAME_AUDIO_DB1CT_FROM_STREAM; |
| aud_if_cfg.db1_channel_count = 2; |
| aud_if_cfg.db2_sample_freq = HDMI_INFOFRAME_AUDIO_DB2SF_FROM_STREAM; |
| aud_if_cfg.db2_sample_size = HDMI_INFOFRAME_AUDIO_DB2SS_FROM_STREAM; |
| aud_if_cfg.db4_channel_alloc = 0x00; |
| aud_if_cfg.db5_downmix_inh = false; |
| aud_if_cfg.db5_lsv = 0; |
| |
| hdmi_core_audio_infoframe_config(ip_data, &aud_if_cfg); |
| return 0; |
| } |
| |
| static int hdmi_audio_startup(struct snd_pcm_substream *substream, |
| struct snd_soc_dai *dai) |
| { |
| if (!hdmi.ip_data.cfg.cm.mode) { |
| pr_err("Current video settings do not support audio.\n"); |
| return -EIO; |
| } |
| return 0; |
| } |
| |
| static int hdmi_audio_codec_probe(struct snd_soc_codec *codec) |
| { |
| struct hdmi_ip_data *priv = &hdmi.ip_data; |
| |
| snd_soc_codec_set_drvdata(codec, priv); |
| return 0; |
| } |
| |
| static struct snd_soc_codec_driver hdmi_audio_codec_drv = { |
| .probe = hdmi_audio_codec_probe, |
| }; |
| |
| static struct snd_soc_dai_ops hdmi_audio_codec_ops = { |
| .hw_params = hdmi_audio_hw_params, |
| .trigger = hdmi_audio_trigger, |
| .startup = hdmi_audio_startup, |
| }; |
| |
| static struct snd_soc_dai_driver hdmi_codec_dai_drv = { |
| .name = "hdmi-audio-codec", |
| .playback = { |
| .channels_min = 2, |
| .channels_max = 2, |
| .rates = SNDRV_PCM_RATE_32000 | |
| SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000, |
| .formats = SNDRV_PCM_FMTBIT_S16_LE | |
| SNDRV_PCM_FMTBIT_S24_LE, |
| }, |
| .ops = &hdmi_audio_codec_ops, |
| }; |
| #endif |
| |
| static int hdmi_get_clocks(struct platform_device *pdev) |
| { |
| struct clk *clk; |
| |
| clk = 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; |
| } |
| |
| static void hdmi_put_clocks(void) |
| { |
| if (hdmi.sys_clk) |
| clk_put(hdmi.sys_clk); |
| } |
| |
| /* HDMI HW IP initialisation */ |
| static int omapdss_hdmihw_probe(struct platform_device *pdev) |
| { |
| struct resource *hdmi_mem; |
| int r; |
| |
| hdmi.pdata = pdev->dev.platform_data; |
| hdmi.pdev = pdev; |
| |
| mutex_init(&hdmi.lock); |
| |
| hdmi_mem = platform_get_resource(hdmi.pdev, IORESOURCE_MEM, 0); |
| if (!hdmi_mem) { |
| DSSERR("can't get IORESOURCE_MEM HDMI\n"); |
| return -EINVAL; |
| } |
| |
| /* Base address taken from platform */ |
| hdmi.ip_data.base_wp = ioremap(hdmi_mem->start, |
| resource_size(hdmi_mem)); |
| if (!hdmi.ip_data.base_wp) { |
| DSSERR("can't ioremap WP\n"); |
| return -ENOMEM; |
| } |
| |
| r = hdmi_get_clocks(pdev); |
| if (r) { |
| iounmap(hdmi.ip_data.base_wp); |
| 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_panel_init(); |
| |
| #if defined(CONFIG_SND_OMAP_SOC_OMAP4_HDMI) || \ |
| defined(CONFIG_SND_OMAP_SOC_OMAP4_HDMI_MODULE) |
| |
| /* Register ASoC codec DAI */ |
| r = snd_soc_register_codec(&pdev->dev, &hdmi_audio_codec_drv, |
| &hdmi_codec_dai_drv, 1); |
| if (r) { |
| DSSERR("can't register ASoC HDMI audio codec\n"); |
| return r; |
| } |
| #endif |
| return 0; |
| } |
| |
| static int omapdss_hdmihw_remove(struct platform_device *pdev) |
| { |
| hdmi_panel_exit(); |
| |
| #if defined(CONFIG_SND_OMAP_SOC_OMAP4_HDMI) || \ |
| defined(CONFIG_SND_OMAP_SOC_OMAP4_HDMI_MODULE) |
| snd_soc_unregister_codec(&pdev->dev); |
| #endif |
| |
| pm_runtime_disable(&pdev->dev); |
| |
| hdmi_put_clocks(); |
| |
| iounmap(hdmi.ip_data.base_wp); |
| |
| return 0; |
| } |
| |
| static int hdmi_runtime_suspend(struct device *dev) |
| { |
| clk_disable(hdmi.sys_clk); |
| |
| dispc_runtime_put(); |
| dss_runtime_put(); |
| |
| return 0; |
| } |
| |
| static int hdmi_runtime_resume(struct device *dev) |
| { |
| int r; |
| |
| r = dss_runtime_get(); |
| if (r < 0) |
| goto err_get_dss; |
| |
| r = dispc_runtime_get(); |
| if (r < 0) |
| goto err_get_dispc; |
| |
| |
| clk_enable(hdmi.sys_clk); |
| |
| return 0; |
| |
| err_get_dispc: |
| dss_runtime_put(); |
| err_get_dss: |
| return r; |
| } |
| |
| 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 = omapdss_hdmihw_remove, |
| .driver = { |
| .name = "omapdss_hdmi", |
| .owner = THIS_MODULE, |
| .pm = &hdmi_pm_ops, |
| }, |
| }; |
| |
| int hdmi_init_platform_driver(void) |
| { |
| return platform_driver_register(&omapdss_hdmihw_driver); |
| } |
| |
| void hdmi_uninit_platform_driver(void) |
| { |
| return platform_driver_unregister(&omapdss_hdmihw_driver); |
| } |