diff options
Diffstat (limited to 'drivers/video/omap2/dss/hdmi.c')
| -rw-r--r-- | drivers/video/omap2/dss/hdmi.c | 1845 |
1 files changed, 1845 insertions, 0 deletions
diff --git a/drivers/video/omap2/dss/hdmi.c b/drivers/video/omap2/dss/hdmi.c new file mode 100644 index 000000000000..256f27a9064a --- /dev/null +++ b/drivers/video/omap2/dss/hdmi.c @@ -0,0 +1,1845 @@ +/* + * 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> +#endif + +#include "dss.h" +#include "hdmi.h" +#include "dss_features.h" + +static struct { + struct mutex lock; + struct omap_display_platform_data *pdata; + struct platform_device *pdev; + void __iomem *base_wp; /* HDMI wrapper */ + int code; + int mode; + u8 edid[HDMI_EDID_MAX_LENGTH]; + u8 edid_set; + bool custom_set; + struct hdmi_config cfg; + + struct clk *sys_clk; + struct clk *hdmi_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_timings cea_vesa_timings[OMAP_HDMI_TIMINGS_NB] = { + { {640, 480, 25200, 96, 16, 48, 2, 10, 33} , 0 , 0}, + { {1280, 720, 74250, 40, 440, 220, 5, 5, 20}, 1, 1}, + { {1280, 720, 74250, 40, 110, 220, 5, 5, 20}, 1, 1}, + { {720, 480, 27027, 62, 16, 60, 6, 9, 30}, 0, 0}, + { {2880, 576, 108000, 256, 48, 272, 5, 5, 39}, 0, 0}, + { {1440, 240, 27027, 124, 38, 114, 3, 4, 15}, 0, 0}, + { {1440, 288, 27000, 126, 24, 138, 3, 2, 19}, 0, 0}, + { {1920, 540, 74250, 44, 528, 148, 5, 2, 15}, 1, 1}, + { {1920, 540, 74250, 44, 88, 148, 5, 2, 15}, 1, 1}, + { {1920, 1080, 148500, 44, 88, 148, 5, 4, 36}, 1, 1}, + { {720, 576, 27000, 64, 12, 68, 5, 5, 39}, 0, 0}, + { {1440, 576, 54000, 128, 24, 136, 5, 5, 39}, 0, 0}, + { {1920, 1080, 148500, 44, 528, 148, 5, 4, 36}, 1, 1}, + { {2880, 480, 108108, 248, 64, 240, 6, 9, 30}, 0, 0}, + { {1920, 1080, 74250, 44, 638, 148, 5, 4, 36}, 1, 1}, + /* VESA From Here */ + { {640, 480, 25175, 96, 16, 48, 2 , 11, 31}, 0, 0}, + { {800, 600, 40000, 128, 40, 88, 4 , 1, 23}, 1, 1}, + { {848, 480, 33750, 112, 16, 112, 8 , 6, 23}, 1, 1}, + { {1280, 768, 79500, 128, 64, 192, 7 , 3, 20}, 1, 0}, + { {1280, 800, 83500, 128, 72, 200, 6 , 3, 22}, 1, 0}, + { {1360, 768, 85500, 112, 64, 256, 6 , 3, 18}, 1, 1}, + { {1280, 960, 108000, 112, 96, 312, 3 , 1, 36}, 1, 1}, + { {1280, 1024, 108000, 112, 48, 248, 3 , 1, 38}, 1, 1}, + { {1024, 768, 65000, 136, 24, 160, 6, 3, 29}, 0, 0}, + { {1400, 1050, 121750, 144, 88, 232, 4, 3, 32}, 1, 0}, + { {1440, 900, 106500, 152, 80, 232, 6, 3, 25}, 1, 0}, + { {1680, 1050, 146250, 176 , 104, 280, 6, 3, 30}, 1, 0}, + { {1366, 768, 85500, 143, 70, 213, 3, 3, 24}, 1, 1}, + { {1920, 1080, 148500, 44, 148, 80, 5, 4, 36}, 1, 1}, + { {1280, 768, 68250, 32, 48, 80, 7, 3, 12}, 0, 1}, + { {1400, 1050, 101000, 32, 48, 80, 4, 3, 23}, 0, 1}, + { {1680, 1050, 119000, 32, 48, 80, 6, 3, 21}, 0, 1}, + { {1280, 800, 79500, 32, 48, 80, 6, 3, 14}, 0, 1}, + { {1280, 720, 74250, 40, 110, 220, 5, 5, 20}, 1, 1} +}; + +/* + * This is a static mapping array which maps the timing values + * with corresponding CEA / VESA code + */ +static const int code_index[OMAP_HDMI_TIMINGS_NB] = { + 1, 19, 4, 2, 37, 6, 21, 20, 5, 16, 17, 29, 31, 35, 32, + /* <--15 CEA 17--> vesa*/ + 4, 9, 0xE, 0x17, 0x1C, 0x27, 0x20, 0x23, 0x10, 0x2A, + 0X2F, 0x3A, 0X51, 0X52, 0x16, 0x29, 0x39, 0x1B +}; + +/* + * This is reverse static mapping which maps the CEA / VESA code + * to the corresponding timing values + */ +static const int code_cea[39] = { + -1, 0, 3, 3, 2, 8, 5, 5, -1, -1, + -1, -1, -1, -1, -1, -1, 9, 10, 10, 1, + 7, 6, 6, -1, -1, -1, -1, -1, -1, 11, + 11, 12, 14, -1, -1, 13, 13, 4, 4 +}; + +static const int code_vesa[85] = { + -1, -1, -1, -1, 15, -1, -1, -1, -1, 16, + -1, -1, -1, -1, 17, -1, 23, -1, -1, -1, + -1, -1, 29, 18, -1, -1, -1, 32, 19, -1, + -1, -1, 21, -1, -1, 22, -1, -1, -1, 20, + -1, 30, 24, -1, -1, -1, -1, 25, -1, -1, + -1, -1, -1, -1, -1, -1, -1, 31, 26, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, 27, 28, -1, 33}; + +static const u8 edid_header[8] = {0x0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x0}; + +static inline void hdmi_write_reg(const struct hdmi_reg idx, u32 val) +{ + __raw_writel(val, hdmi.base_wp + idx.idx); +} + +static inline u32 hdmi_read_reg(const struct hdmi_reg idx) +{ + return __raw_readl(hdmi.base_wp + idx.idx); +} + +static inline int hdmi_wait_for_bit_change(const struct hdmi_reg idx, + int b2, int b1, u32 val) +{ + u32 t = 0; + while (val != REG_GET(idx, b2, b1)) { + udelay(1); + if (t++ > 10000) + return !val; + } + return val; +} + +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); + return r < 0 ? r : 0; +} + +static void hdmi_runtime_put(void) +{ + int r; + + DSSDBG("hdmi_runtime_put\n"); + + r = pm_runtime_put(&hdmi.pdev->dev); + WARN_ON(r < 0); +} + +int hdmi_init_display(struct omap_dss_device *dssdev) +{ + DSSDBG("init_display\n"); + + return 0; +} + +static int hdmi_pll_init(enum hdmi_clk_refsel refsel, int dcofreq, + struct hdmi_pll_info *fmt, u16 sd) +{ + u32 r; + + /* PLL start always use manual mode */ + REG_FLD_MOD(PLLCTRL_PLL_CONTROL, 0x0, 0, 0); + + r = hdmi_read_reg(PLLCTRL_CFG1); + r = FLD_MOD(r, fmt->regm, 20, 9); /* CFG1_PLL_REGM */ + r = FLD_MOD(r, fmt->regn, 8, 1); /* CFG1_PLL_REGN */ + + hdmi_write_reg(PLLCTRL_CFG1, r); + + r = hdmi_read_reg(PLLCTRL_CFG2); + + r = FLD_MOD(r, 0x0, 12, 12); /* PLL_HIGHFREQ divide by 2 */ + r = FLD_MOD(r, 0x1, 13, 13); /* PLL_REFEN */ + r = FLD_MOD(r, 0x0, 14, 14); /* PHY_CLKINEN de-assert during locking */ + + if (dcofreq) { + /* divider programming for frequency beyond 1000Mhz */ + REG_FLD_MOD(PLLCTRL_CFG3, sd, 17, 10); + r = FLD_MOD(r, 0x4, 3, 1); /* 1000MHz and 2000MHz */ + } else { + r = FLD_MOD(r, 0x2, 3, 1); /* 500MHz and 1000MHz */ + } + + hdmi_write_reg(PLLCTRL_CFG2, r); + + r = hdmi_read_reg(PLLCTRL_CFG4); + r = FLD_MOD(r, fmt->regm2, 24, 18); + r = FLD_MOD(r, fmt->regmf, 17, 0); + + hdmi_write_reg(PLLCTRL_CFG4, r); + + /* go now */ + REG_FLD_MOD(PLLCTRL_PLL_GO, 0x1, 0, 0); + + /* wait for bit change */ + if (hdmi_wait_for_bit_change(PLLCTRL_PLL_GO, 0, 0, 1) != 1) { + DSSERR("PLL GO bit not set\n"); + return -ETIMEDOUT; + } + + /* Wait till the lock bit is set in PLL status */ + if (hdmi_wait_for_bit_change(PLLCTRL_PLL_STATUS, 1, 1, 1) != 1) { + DSSWARN("cannot lock PLL\n"); + DSSWARN("CFG1 0x%x\n", + hdmi_read_reg(PLLCTRL_CFG1)); + DSSWARN("CFG2 0x%x\n", + hdmi_read_reg(PLLCTRL_CFG2)); + DSSWARN("CFG4 0x%x\n", + hdmi_read_reg(PLLCTRL_CFG4)); + return -ETIMEDOUT; + } + + DSSDBG("PLL locked!\n"); + + return 0; +} + +/* PHY_PWR_CMD */ +static int hdmi_set_phy_pwr(enum hdmi_phy_pwr val) +{ + /* Command for power control of HDMI PHY */ + REG_FLD_MOD(HDMI_WP_PWR_CTRL, val, 7, 6); + + /* Status of the power control of HDMI PHY */ + if (hdmi_wait_for_bit_change(HDMI_WP_PWR_CTRL, 5, 4, val) != val) { + DSSERR("Failed to set PHY power mode to %d\n", val); + return -ETIMEDOUT; + } + + return 0; +} + +/* PLL_PWR_CMD */ +static int hdmi_set_pll_pwr(enum hdmi_pll_pwr val) +{ + /* Command for power control of HDMI PLL */ + REG_FLD_MOD(HDMI_WP_PWR_CTRL, val, 3, 2); + + /* wait till PHY_PWR_STATUS is set */ + if (hdmi_wait_for_bit_change(HDMI_WP_PWR_CTRL, 1, 0, val) != val) { + DSSERR("Failed to set PHY_PWR_STATUS\n"); + return -ETIMEDOUT; + } + + return 0; +} + +static int hdmi_pll_reset(void) +{ + /* SYSRESET controlled by power FSM */ + REG_FLD_MOD(PLLCTRL_PLL_CONTROL, 0x0, 3, 3); + + /* READ 0x0 reset is in progress */ + if (hdmi_wait_for_bit_change(PLLCTRL_PLL_STATUS, 0, 0, 1) != 1) { + DSSERR("Failed to sysreset PLL\n"); + return -ETIMEDOUT; + } + + return 0; +} + +static int hdmi_phy_init(void) +{ + u16 r = 0; + + r = hdmi_set_phy_pwr(HDMI_PHYPWRCMD_LDOON); + if (r) + return r; + + r = hdmi_set_phy_pwr(HDMI_PHYPWRCMD_TXON); + if (r) + return r; + + /* + * Read address 0 in order to get the SCP reset done completed + * Dummy access performed to make sure reset is done + */ + hdmi_read_reg(HDMI_TXPHY_TX_CTRL); + + /* + * Write to phy address 0 to configure the clock + * use HFBITCLK write HDMI_TXPHY_TX_CONTROL_FREQOUT field + */ + REG_FLD_MOD(HDMI_TXPHY_TX_CTRL, 0x1, 31, 30); + + /* Write to phy address 1 to start HDMI line (TXVALID and TMDSCLKEN) */ + hdmi_write_reg(HDMI_TXPHY_DIGITAL_CTRL, 0xF0000000); + + /* Setup max LDO voltage */ + REG_FLD_MOD(HDMI_TXPHY_POWER_CTRL, 0xB, 3, 0); + + /* Write to phy address 3 to change the polarity control */ + REG_FLD_MOD(HDMI_TXPHY_PAD_CFG_CTRL, 0x1, 27, 27); + + return 0; +} + +static int hdmi_pll_program(struct hdmi_pll_info *fmt) +{ + u16 r = 0; + enum hdmi_clk_refsel refsel; + + r = hdmi_set_pll_pwr(HDMI_PLLPWRCMD_ALLOFF); + if (r) + return r; + + r = hdmi_set_pll_pwr(HDMI_PLLPWRCMD_BOTHON_ALLCLKS); + if (r) + return r; + + r = hdmi_pll_reset(); + if (r) + return r; + + refsel = HDMI_REFSEL_SYSCLK; + + r = hdmi_pll_init(refsel, fmt->dcofreq, fmt, fmt->regsd); + if (r) + return r; + + return 0; +} + +static void hdmi_phy_off(void) +{ + hdmi_set_phy_pwr(HDMI_PHYPWRCMD_OFF); +} + +static int hdmi_core_ddc_edid(u8 *pedid, int ext) +{ + u32 i, j; + char checksum = 0; + u32 offset = 0; + + /* Turn on CLK for DDC */ + REG_FLD_MOD(HDMI_CORE_AV_DPD, 0x7, 2, 0); + + /* + * SW HACK : Without the Delay DDC(i2c bus) reads 0 values / + * right shifted values( The behavior is not consistent and seen only + * with some TV's) + */ + usleep_range(800, 1000); + + if (!ext) { + /* Clk SCL Devices */ + REG_FLD_MOD(HDMI_CORE_DDC_CMD, 0xA, 3, 0); + + /* HDMI_CORE_DDC_STATUS_IN_PROG */ + if (hdmi_wait_for_bit_change(HDMI_CORE_DDC_STATUS, + 4, 4, 0) != 0) { + DSSERR("Failed to program DDC\n"); + return -ETIMEDOUT; + } + + /* Clear FIFO */ + REG_FLD_MOD(HDMI_CORE_DDC_CMD, 0x9, 3, 0); + + /* HDMI_CORE_DDC_STATUS_IN_PROG */ + if (hdmi_wait_for_bit_change(HDMI_CORE_DDC_STATUS, + 4, 4, 0) != 0) { + DSSERR("Failed to program DDC\n"); + return -ETIMEDOUT; + } + + } else { + if (ext % 2 != 0) + offset = 0x80; + } + + /* Load Segment Address Register */ + REG_FLD_MOD(HDMI_CORE_DDC_SEGM, ext/2, 7, 0); + + /* Load Slave Address Register */ + REG_FLD_MOD(HDMI_CORE_DDC_ADDR, 0xA0 >> 1, 7, 1); + + /* Load Offset Address Register */ + REG_FLD_MOD(HDMI_CORE_DDC_OFFSET, offset, 7, 0); + + /* Load Byte Count */ + REG_FLD_MOD(HDMI_CORE_DDC_COUNT1, 0x80, 7, 0); + REG_FLD_MOD(HDMI_CORE_DDC_COUNT2, 0x0, 1, 0); + + /* Set DDC_CMD */ + if (ext) + REG_FLD_MOD(HDMI_CORE_DDC_CMD, 0x4, 3, 0); + else + REG_FLD_MOD(HDMI_CORE_DDC_CMD, 0x2, 3, 0); + + /* HDMI_CORE_DDC_STATUS_BUS_LOW */ + if (REG_GET(HDMI_CORE_DDC_STATUS, 6, 6) == 1) { + DSSWARN("I2C Bus Low?\n"); + return -EIO; + } + /* HDMI_CORE_DDC_STATUS_NO_ACK */ + if (REG_GET(HDMI_CORE_DDC_STATUS, 5, 5) == 1) { + DSSWARN("I2C No Ack\n"); + return -EIO; + } + + i = ext * 128; + j = 0; + while (((REG_GET(HDMI_CORE_DDC_STATUS, 4, 4) == 1) || + (REG_GET(HDMI_CORE_DDC_STATUS, 2, 2) == 0)) && + j < 128) { + + if (REG_GET(HDMI_CORE_DDC_STATUS, 2, 2) == 0) { + /* FIFO not empty */ + pedid[i++] = REG_GET(HDMI_CORE_DDC_DATA, 7, 0); + j++; + } + } + + for (j = 0; j < 128; j++) + checksum += pedid[j]; + + if (checksum != 0) { + DSSERR("E-EDID checksum failed!!\n"); + return -EIO; + } + + return 0; +} + +static int read_edid(u8 *pedid, u16 max_length) +{ + int r = 0, n = 0, i = 0; + int max_ext_blocks = (max_length / 128) - 1; + + r = hdmi_core_ddc_edid(pedid, 0); + if (r) { + return r; + } else { + n = pedid[0x7e]; + + /* + * README: need to comply with max_length set by the caller. + * Better implementation should be to allocate necessary + * memory to store EDID according to nb_block field found + * in first block + */ + if (n > max_ext_blocks) + n = max_ext_blocks; + + for (i = 1; i <= n; i++) { + r = hdmi_core_ddc_edid(pedid, i); + if (r) + return r; + } + } + return 0; +} + +static int get_timings_index(void) +{ + int code; + + if (hdmi.mode == 0) + code = code_vesa[hdmi.code]; + else + code = code_cea[hdmi.code]; + + if (code == -1) { + /* HDMI code 4 corresponds to 640 * 480 VGA */ + hdmi.code = 4; + /* DVI mode 1 corresponds to HDMI 0 to DVI */ + hdmi.mode = HDMI_DVI; + + code = code_vesa[hdmi.code]; + } + return code; +} + +static struct hdmi_cm hdmi_get_code(struct omap_video_timings *timing) +{ + int i = 0, code = -1, temp_vsync = 0, temp_hsync = 0; + int timing_vsync = 0, timing_hsync = 0; + struct omap_video_timings temp; + struct hdmi_cm cm = {-1}; + DSSDBG("hdmi_get_code\n"); + + for (i = 0; i < OMAP_HDMI_TIMINGS_NB; i++) { + temp = cea_vesa_timings[i].timings; + if ((temp.pixel_clock == timing->pixel_clock) && + (temp.x_res == timing->x_res) && + (temp.y_res == timing->y_res)) { + + temp_hsync = temp.hfp + temp.hsw + temp.hbp; + timing_hsync = timing->hfp + timing->hsw + timing->hbp; + temp_vsync = temp.vfp + temp.vsw + temp.vbp; + timing_vsync = timing->vfp + timing->vsw + timing->vbp; + + DSSDBG("temp_hsync = %d , temp_vsync = %d" + "timing_hsync = %d, timing_vsync = %d\n", + temp_hsync, temp_hsync, + timing_hsync, timing_vsync); + + if ((temp_hsync == timing_hsync) && + (temp_vsync == timing_vsync)) { + code = i; + cm.code = code_index[i]; + if (code < 14) + cm.mode = HDMI_HDMI; + else + cm.mode = HDMI_DVI; + DSSDBG("Hdmi_code = %d mode = %d\n", + cm.code, cm.mode); + break; + } + } + } + + return cm; +} + +static void get_horz_vert_timing_info(int current_descriptor_addrs, u8 *edid , + struct omap_video_timings *timings) +{ + /* X and Y resolution */ + timings->x_res = (((edid[current_descriptor_addrs + 4] & 0xF0) << 4) | + edid[current_descriptor_addrs + 2]); + timings->y_res = (((edid[current_descriptor_addrs + 7] & 0xF0) << 4) | + edid[current_descriptor_addrs + 5]); + + timings->pixel_clock = ((edid[current_descriptor_addrs + 1] << 8) | + edid[current_descriptor_addrs]); + + timings->pixel_clock = 10 * timings->pixel_clock; + + /* HORIZONTAL FRONT PORCH */ + timings->hfp = edid[current_descriptor_addrs + 8] | + ((edid[current_descriptor_addrs + 11] & 0xc0) << 2); + /* HORIZONTAL SYNC WIDTH */ + timings->hsw = edid[current_descriptor_addrs + 9] | + ((edid[current_descriptor_addrs + 11] & 0x30) << 4); + /* HORIZONTAL BACK PORCH */ + timings->hbp = (((edid[current_descriptor_addrs + 4] & 0x0F) << 8) | + edid[current_descriptor_addrs + 3]) - + (timings->hfp + timings->hsw); + /* VERTICAL FRONT PORCH */ + timings->vfp = ((edid[current_descriptor_addrs + 10] & 0xF0) >> 4) | + ((edid[current_descriptor_addrs + 11] & 0x0f) << 2); + /* VERTICAL SYNC WIDTH */ + timings->vsw = (edid[current_descriptor_addrs + 10] & 0x0F) | + ((edid[current_descriptor_addrs + 11] & 0x03) << 4); + /* VERTICAL BACK PORCH */ + timings->vbp = (((edid[current_descriptor_addrs + 7] & 0x0F) << 8) | + edid[current_descriptor_addrs + 6]) - + (timings->vfp + timings->vsw); + +} + +/* Description : This function gets the resolution information from EDID */ +static void get_edid_timing_data(u8 *edid) +{ + u8 count; + u16 current_descriptor_addrs; + struct hdmi_cm cm; + struct omap_video_timings edid_timings; + + /* search block 0, there are 4 DTDs arranged in priority order */ + for (count = 0; count < EDID_SIZE_BLOCK0_TIMING_DESCRIPTOR; count++) { + current_descriptor_addrs = + EDID_DESCRIPTOR_BLOCK0_ADDRESS + + count * EDID_TIMING_DESCRIPTOR_SIZE; + get_horz_vert_timing_info(current_descriptor_addrs, + edid, &edid_timings); + cm = hdmi_get_code(&edid_timings); + DSSDBG("Block0[%d] value matches code = %d , mode = %d\n", + count, cm.code, cm.mode); + if (cm.code == -1) { + continue; + } else { + hdmi.code = cm.code; + hdmi.mode = cm.mode; + DSSDBG("code = %d , mode = %d\n", + hdmi.code, hdmi.mode); + return; + } + } + if (edid[0x7e] != 0x00) { + for (count = 0; count < EDID_SIZE_BLOCK1_TIMING_DESCRIPTOR; + count++) { + current_descriptor_addrs = + EDID_DESCRIPTOR_BLOCK1_ADDRESS + + count * EDID_TIMING_DESCRIPTOR_SIZE; + get_horz_vert_timing_info(current_descriptor_addrs, + edid, &edid_timings); + cm = hdmi_get_code(&edid_timings); + DSSDBG("Block1[%d] value matches code = %d, mode = %d", + count, cm.code, cm.mode); + if (cm.code == -1) { + continue; + } else { + hdmi.code = cm.code; + hdmi.mode = cm.mode; + DSSDBG("code = %d , mode = %d\n", + hdmi.code, hdmi.mode); + return; + } + } + } + + DSSINFO("no valid timing found , falling back to VGA\n"); + hdmi.code = 4; /* setting default value of 640 480 VGA */ + hdmi.mode = HDMI_DVI; +} + +static void hdmi_read_edid(struct omap_video_timings *dp) +{ + int ret = 0, code; + + memset(hdmi.edid, 0, HDMI_EDID_MAX_LENGTH); + + if (!hdmi.edid_set) + ret = read_edid(hdmi.edid, HDMI_EDID_MAX_LENGTH); + + if (!ret) { + if (!memcmp(hdmi.edid, edid_header, sizeof(edid_header))) { + /* search for timings of default resolution */ + get_edid_timing_data(hdmi.edid); + hdmi.edid_set = true; + } + } else { + DSSWARN("failed to read E-EDID\n"); + } + + if (!hdmi.edid_set) { + DSSINFO("fallback to VGA\n"); + hdmi.code = 4; /* setting default value of 640 480 VGA */ + hdmi.mode = HDMI_DVI; + } + + code = get_timings_index(); + + *dp = cea_vesa_timings[code].timings; +} + +static void hdmi_core_init(struct hdmi_core_video_config *video_cfg, + struct hdmi_core_infoframe_avi *avi_cfg, + struct hdmi_core_packet_enable_repeat *repeat_cfg) +{ + DSSDBG("Enter hdmi_core_init\n"); + + /* video core */ + video_cfg->ip_bus_width = HDMI_INPUT_8BIT; + video_cfg->op_dither_truc = HDMI_OUTPUTTRUNCATION_8BIT; + video_cfg->deep_color_pkt = HDMI_DEEPCOLORPACKECTDISABLE; + video_cfg->pkt_mode = HDMI_PACKETMODERESERVEDVALUE; + video_cfg->hdmi_dvi = HDMI_DVI; + video_cfg->tclk_sel_clkmult = HDMI_FPLL10IDCK; + + /* info frame */ + avi_cfg->db1_format = 0; + avi_cfg->db1_active_info = 0; + avi_cfg->db1_bar_info_dv = 0; + avi_cfg->db1_scan_info = 0; + avi_cfg->db2_colorimetry = 0; + avi_cfg->db2_aspect_ratio = 0; + avi_cfg->db2_active_fmt_ar = 0; + avi_cfg->db3_itc = 0; + avi_cfg->db3_ec = 0; + avi_cfg->db3_q_range = 0; + avi_cfg->db3_nup_scaling = 0; + avi_cfg->db4_videocode = 0; + avi_cfg->db5_pixel_repeat = 0; + avi_cfg->db6_7_line_eoftop = 0 ; + avi_cfg->db8_9_line_sofbottom = 0; + avi_cfg->db10_11_pixel_eofleft = 0; + avi_cfg->db12_13_pixel_sofright = 0; + + /* packet enable and repeat */ + repeat_cfg->audio_pkt = 0; + repeat_cfg->audio_pkt_repeat = 0; + repeat_cfg->avi_infoframe = 0; + repeat_cfg->avi_infoframe_repeat = 0; + repeat_cfg->gen_cntrl_pkt = 0; + repeat_cfg->gen_cntrl_pkt_repeat = 0; + repeat_cfg->generic_pkt = 0; + repeat_cfg->generic_pkt_repeat = 0; +} + +static void hdmi_core_powerdown_disable(void) +{ + DSSDBG("Enter hdmi_core_powerdown_disable\n"); + REG_FLD_MOD(HDMI_CORE_CTRL1, 0x0, 0, 0); +} + +static void hdmi_core_swreset_release(void) +{ + DSSDBG("Enter hdmi_core_swreset_release\n"); + REG_FLD_MOD(HDMI_CORE_SYS_SRST, 0x0, 0, 0); +} + +static void hdmi_core_swreset_assert(void) +{ + DSSDBG("Enter hdmi_core_swreset_assert\n"); + REG_FLD_MOD(HDMI_CORE_SYS_SRST, 0x1, 0, 0); +} + +/* DSS_HDMI_CORE_VIDEO_CONFIG */ +static void hdmi_core_video_config(struct hdmi_core_video_config *cfg) +{ + u32 r = 0; + + /* sys_ctrl1 default configuration not tunable */ + r = hdmi_read_reg(HDMI_CORE_CTRL1); + r = FLD_MOD(r, HDMI_CORE_CTRL1_VEN_FOLLOWVSYNC, 5, 5); + r = FLD_MOD(r, HDMI_CORE_CTRL1_HEN_FOLLOWHSYNC, 4, 4); + r = FLD_MOD(r, HDMI_CORE_CTRL1_BSEL_24BITBUS, 2, 2); + r = FLD_MOD(r, HDMI_CORE_CTRL1_EDGE_RISINGEDGE, 1, 1); + hdmi_write_reg(HDMI_CORE_CTRL1, r); + + REG_FLD_MOD(HDMI_CORE_SYS_VID_ACEN, cfg->ip_bus_width, 7, 6); + + /* Vid_Mode */ + r = hdmi_read_reg(HDMI_CORE_SYS_VID_MODE); + + /* dither truncation configuration */ + if (cfg->op_dither_truc > HDMI_OUTPUTTRUNCATION_12BIT) { + r = FLD_MOD(r, cfg->op_dither_truc - 3, 7, 6); + r = FLD_MOD(r, 1, 5, 5); + } else { + r = FLD_MOD(r, cfg->op_dither_truc, 7, 6); + r = FLD_MOD(r, 0, 5, 5); + } + hdmi_write_reg(HDMI_CORE_SYS_VID_MODE, r); + + /* HDMI_Ctrl */ + r = hdmi_read_reg(HDMI_CORE_AV_HDMI_CTRL); + r = FLD_MOD(r, cfg->deep_color_pkt, 6, 6); + r = FLD_MOD(r, cfg->pkt_mode, 5, 3); + r = FLD_MOD(r, cfg->hdmi_dvi, 0, 0); + hdmi_write_reg(HDMI_CORE_AV_HDMI_CTRL, r); + + /* TMDS_CTRL */ + REG_FLD_MOD(HDMI_CORE_SYS_TMDS_CTRL, + cfg->tclk_sel_clkmult, 6, 5); +} + +static void hdmi_core_aux_infoframe_avi_config( + struct hdmi_core_infoframe_avi info_avi) +{ + u32 val; + char sum = 0, checksum = 0; + + sum += 0x82 + 0x002 + 0x00D; + hdmi_write_reg(HDMI_CORE_AV_AVI_TYPE, 0x082); + hdmi_write_reg(HDMI_CORE_AV_AVI_VERS, 0x002); + hdmi_write_reg(HDMI_CORE_AV_AVI_LEN, 0x00D); + + val = (info_avi.db1_format << 5) | + (info_avi.db1_active_info << 4) | + (info_avi.db1_bar_info_dv << 2) | + (info_avi.db1_scan_info); + hdmi_write_reg(HDMI_CORE_AV_AVI_DBYTE(0), val); + sum += val; + + val = (info_avi.db2_colorimetry << 6) | + (info_avi.db2_aspect_ratio << 4) | + (info_avi.db2_active_fmt_ar); + hdmi_write_reg(HDMI_CORE_AV_AVI_DBYTE(1), val); + sum += val; + + val = (info_avi.db3_itc << 7) | + (info_avi.db3_ec << 4) | + (info_avi.db3_q_range << 2) | + (info_avi.db3_nup_scaling); + hdmi_write_reg(HDMI_CORE_AV_AVI_DBYTE(2), val); + sum += val; + + hdmi_write_reg(HDMI_CORE_AV_AVI_DBYTE(3), info_avi.db4_videocode); + sum += info_avi.db4_videocode; + + val = info_avi.db5_pixel_repeat; + hdmi_write_reg(HDMI_CORE_AV_AVI_DBYTE(4), val); + sum += val; + + val = info_avi.db6_7_line_eoftop & 0x00FF; + hdmi_write_reg(HDMI_CORE_AV_AVI_DBYTE(5), val); + sum += val; + + val = ((info_avi.db6_7_line_eoftop >> 8) & 0x00FF); + hdmi_write_reg(HDMI_CORE_AV_AVI_DBYTE(6), val); + sum += val; + + val = info_avi.db8_9_line_sofbottom & 0x00FF; + hdmi_write_reg(HDMI_CORE_AV_AVI_DBYTE(7), val); + sum += val; + + val = ((info_avi.db8_9_line_sofbottom >> 8) & 0x00FF); + hdmi_write_reg(HDMI_CORE_AV_AVI_DBYTE(8), val); + sum += val; + + val = info_avi.db10_11_pixel_eofleft & 0x00FF; + hdmi_write_reg(HDMI_CORE_AV_AVI_DBYTE(9), val); + sum += val; + + val = ((info_avi.db10_11_pixel_eofleft >> 8) & 0x00FF); + hdmi_write_reg(HDMI_CORE_AV_AVI_DBYTE(10), val); + sum += val; + + val = info_avi.db12_13_pixel_sofright & 0x00FF; + hdmi_write_reg(HDMI_CORE_AV_AVI_DBYTE(11), val); + sum += val; + + val = ((info_avi.db12_13_pixel_sofright >> 8) & 0x00FF); + hdmi_write_reg(HDMI_CORE_AV_AVI_DBYTE(12), val); + sum += val; + + checksum = 0x100 - sum; + hdmi_write_reg(HDMI_CORE_AV_AVI_CHSUM, checksum); +} + +static void hdmi_core_av_packet_config( + struct hdmi_core_packet_enable_repeat repeat_cfg) +{ + /* enable/repeat the infoframe */ + hdmi_write_reg(HDMI_CORE_AV_PB_CTRL1, + (repeat_cfg.audio_pkt << 5) | + (repeat_cfg.audio_pkt_repeat << 4) | + (repeat_cfg.avi_infoframe << 1) | + (repeat_cfg.avi_infoframe_repeat)); + + /* enable/repeat the packet */ + hdmi_write_reg(HDMI_CORE_AV_PB_CTRL2, + (repeat_cfg.gen_cntrl_pkt << 3) | + (repeat_cfg.gen_cntrl_pkt_repeat << 2) | + (repeat_cfg.generic_pkt << 1) | + (repeat_cfg.generic_pkt_repeat)); +} + +static void hdmi_wp_init(struct omap_video_timings *timings, + struct hdmi_video_format *video_fmt, + struct hdmi_video_interface *video_int) +{ + DSSDBG("Enter hdmi_wp_init\n"); + + timings->hbp = 0; + timings->hfp = 0; + timings->hsw = 0; + timings->vbp = 0; + timings->vfp = 0; + timings->vsw = 0; + + video_fmt->packing_mode = HDMI_PACK_10b_RGB_YUV444; + video_fmt->y_res = 0; + video_fmt->x_res = 0; + + video_int->vsp = 0; + video_int->hsp = 0; + + video_int->interlacing = 0; + video_int->tm = 0; /* HDMI_TIMING_SLAVE */ + +} + +static void hdmi_wp_video_start(bool start) +{ + REG_FLD_MOD(HDMI_WP_VIDEO_CFG, start, 31, 31); +} + +static void hdmi_wp_video_init_format(struct hdmi_video_format *video_fmt, + struct omap_video_timings *timings, struct hdmi_config *param) +{ + DSSDBG("Enter hdmi_wp_video_init_format\n"); + + video_fmt->y_res = param->timings.timings.y_res; + video_fmt->x_res = param->timings.timings.x_res; + + timings->hbp = param->timings.timings.hbp; + timings->hfp = param->timings.timings.hfp; + timings->hsw = param->timings.timings.hsw; + timings->vbp = param->timings.timings.vbp; + timings->vfp = param->timings.timings.vfp; + timings->vsw = param->timings.timings.vsw; +} + +static void hdmi_wp_video_config_format( + struct hdmi_video_format *video_fmt) +{ + u32 l = 0; + + REG_FLD_MOD(HDMI_WP_VIDEO_CFG, video_fmt->packing_mode, 10, 8); + + l |= FLD_VAL(video_fmt->y_res, 31, 16); + l |= FLD_VAL(video_fmt->x_res, 15, 0); + hdmi_write_reg(HDMI_WP_VIDEO_SIZE, l); +} + +static void hdmi_wp_video_config_interface( + struct hdmi_video_interface *video_int) +{ + u32 r; + DSSDBG("Enter hdmi_wp_video_config_interface\n"); + + r = hdmi_read_reg(HDMI_WP_VIDEO_CFG); + r = FLD_MOD(r, video_int->vsp, 7, 7); + r = FLD_MOD(r, video_int->hsp, 6, 6); + r = FLD_MOD(r, video_int->interlacing, 3, 3); + r = FLD_MOD(r, video_int->tm, 1, 0); + hdmi_write_reg(HDMI_WP_VIDEO_CFG, r); +} + +static void hdmi_wp_video_config_timing( + struct omap_video_timings *timings) +{ + u32 timing_h = 0; + u32 timing_v = 0; + + DSSDBG("Enter hdmi_wp_video_config_timing\n"); + + timing_h |= FLD_VAL(timings->hbp, 31, 20); + timing_h |= FLD_VAL(timings->hfp, 19, 8); + timing_h |= FLD_VAL(timings->hsw, 7, 0); + hdmi_write_reg(HDMI_WP_VIDEO_TIMING_H, timing_h); + + timing_v |= FLD_VAL(timings->vbp, 31, 20); + timing_v |= FLD_VAL(timings->vfp, 19, 8); + timing_v |= FLD_VAL(timings->vsw, 7, 0); + hdmi_write_reg(HDMI_WP_VIDEO_TIMING_V, timing_v); +} + +static void hdmi_basic_configure(struct hdmi_config *cfg) +{ + /* HDMI */ + struct omap_video_timings video_timing; + struct hdmi_video_format video_format; + struct hdmi_video_interface video_interface; + /* HDMI core */ + struct hdmi_core_infoframe_avi avi_cfg; + struct hdmi_core_video_config v_core_cfg; + struct hdmi_core_packet_enable_repeat repeat_cfg; + + hdmi_wp_init(&video_timing, &video_format, + &video_interface); + + hdmi_core_init(&v_core_cfg, + &avi_cfg, + &repeat_cfg); + + hdmi_wp_video_init_format(&video_format, + &video_timing, cfg); + + hdmi_wp_video_config_timing(&video_timing); + + /* video config */ + video_format.packing_mode = HDMI_PACK_24b_RGB_YUV444_YUV422; + + hdmi_wp_video_config_format(&video_format); + + video_interface.vsp = cfg->timings.vsync_pol; + video_interface.hsp = cfg->timings.hsync_pol; + video_interface.interlacing = cfg->interlace; + video_interface.tm = 1 ; /* HDMI_TIMING_MASTER_24BIT */ + + hdmi_wp_video_config_interface(&video_interface); + + /* + * configure core video part + * set software reset in the core + */ + hdmi_core_swreset_assert(); + + /* power down off */ + hdmi_core_powerdown_disable(); + + v_core_cfg.pkt_mode = HDMI_PACKETMODE24BITPERPIXEL; + v_core_cfg.hdmi_dvi = cfg->cm.mode; + + hdmi_core_video_config(&v_core_cfg); + + /* release software reset in the core */ + hdmi_core_swreset_release(); + + /* + * configure packet + * info frame video see doc CEA861-D page 65 + */ + avi_cfg.db1_format = HDMI_INFOFRAME_AVI_DB1Y_RGB; + avi_cfg.db1_active_info = + HDMI_INFOFRAME_AVI_DB1A_ACTIVE_FORMAT_OFF; + avi_cfg.db1_bar_info_dv = HDMI_INFOFRAME_AVI_DB1B_NO; + avi_cfg.db1_scan_info = HDMI_INFOFRAME_AVI_DB1S_0; + avi_cfg.db2_colorimetry = HDMI_INFOFRAME_AVI_DB2C_NO; + avi_cfg.db2_aspect_ratio = HDMI_INFOFRAME_AVI_DB2M_NO; + avi_cfg.db2_active_fmt_ar = HDMI_INFOFRAME_AVI_DB2R_SAME; + avi_cfg.db3_itc = HDMI_INFOFRAME_AVI_DB3ITC_NO; + avi_cfg.db3_ec = HDMI_INFOFRAME_AVI_DB3EC_XVYUV601; + avi_cfg.db3_q_range = HDMI_INFOFRAME_AVI_DB3Q_DEFAULT; + avi_cfg.db3_nup_scaling = HDMI_INFOFRAME_AVI_DB3SC_NO; + avi_cfg.db4_videocode = cfg->cm.code; + avi_cfg.db5_pixel_repeat = HDMI_INFOFRAME_AVI_DB5PR_NO; + avi_cfg.db6_7_line_eoftop = 0; + avi_cfg.db8_9_line_sofbottom = 0; + avi_cfg.db10_11_pixel_eofleft = 0; + avi_cfg.db12_13_pixel_sofright = 0; + + hdmi_core_aux_infoframe_avi_config(avi_cfg); + + /* enable/repeat the infoframe */ + repeat_cfg.avi_infoframe = HDMI_PACKETENABLE; + repeat_cfg.avi_infoframe_repeat = HDMI_PACKETREPEATON; + /* wakeup */ + repeat_cfg.audio_pkt = HDMI_PACKETENABLE; + repeat_cfg.audio_pkt_repeat = HDMI_PACKETREPEATON; + hdmi_core_av_packet_config(repeat_cfg); +} + +static void update_hdmi_timings(struct hdmi_config *cfg, + struct omap_video_timings *timings, int code) +{ + cfg->timings.timings.x_res = timings->x_res; + cfg->timings.timings.y_res = timings->y_res; + cfg->timings.timings.hbp = timings->hbp; + cfg->timings.timings.hfp = timings->hfp; + cfg->timings.timings.hsw = timings->hsw; + cfg->timings.timings.vbp = timings->vbp; + cfg->timings.timings.vfp = timings->vfp; + cfg->timings.timings.vsw = timings->vsw; + cfg->timings.timings.pixel_clock = timings->pixel_clock; + cfg->timings.vsync_pol = cea_vesa_timings[code].vsync_pol; + cfg->timings.hsync_pol = cea_vesa_timings[code].hsync_pol; +} + +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 = dssdev->clocks.hdmi.regn; + refclk = clkin / (pi->regn + 1); + + /* + * multiplier is pixel_clk/ref_clk + * Multiplying by 100 to avoid fractional part removal + */ + pi->regm = (phy * 100 / (refclk)) / 100; + 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 + 1) * 250) + 5) / 10; + + 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, code = 0; + struct hdmi_pll_info pll_data; + struct omap_video_timings *p; + unsigned long phy; + + r = hdmi_runtime_get(); + if (r) + return r; + + dispc_enable_channel(OMAP_DSS_CHANNEL_DIGIT, 0); + + 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); + + if (!hdmi.custom_set) { + DSSDBG("Read EDID as no EDID is not set on poweron\n"); + hdmi_read_edid(p); + } + code = get_timings_index(); + dssdev->panel.timings = cea_vesa_timings[code].timings; + update_hdmi_timings(&hdmi.cfg, p, code); + + phy = p->pixel_clock; + + hdmi_compute_pll(dssdev, phy, &pll_data); + + hdmi_wp_video_start(0); + + /* config the PLL and PHY first */ + r = hdmi_pll_program(&pll_data); + if (r) { + DSSDBG("Failed to lock PLL\n"); + goto err; + } + + r = hdmi_phy_init(); + if (r) { + DSSDBG("Failed to start PHY\n"); + goto err; + } + + hdmi.cfg.cm.mode = hdmi.mode; + hdmi.cfg.cm.code = hdmi.code; + hdmi_basic_configure(&hdmi.cfg); + + /* 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); + + dispc_enable_channel(OMAP_DSS_CHANNEL_DIGIT, 1); + + hdmi_wp_video_start(1); + + return 0; +err: + hdmi_runtime_put(); + return -EIO; +} + +static void hdmi_power_off(struct omap_dss_device *dssdev) +{ + dispc_enable_channel(OMAP_DSS_CHANNEL_DIGIT, 0); + + hdmi_wp_video_start(0); + hdmi_phy_off(); + hdmi_set_pll_pwr(HDMI_PLLPWRCMD_ALLOFF); + hdmi_runtime_put(); + + hdmi.edid_set = 0; +} + +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) { + DSSERR("Invalid timing entered\n"); + return -EINVAL; + } + + return 0; + +} + +void omapdss_hdmi_display_set_timing(struct omap_dss_device *dssdev) +{ + struct hdmi_cm cm; + + hdmi.custom_set = 1; + cm = hdmi_get_code(&dssdev->panel.timings); + hdmi.code = cm.code; + hdmi.mode = cm.mode; + omapdss_hdmi_display_enable(dssdev); + hdmi.custom_set = 0; +} + +int omapdss_hdmi_display_enable(struct omap_dss_device *dssdev) +{ + int r = 0; + + DSSDBG("ENTER hdmi_display_enable\n"); + + mutex_lock(&hdmi.lock); + + 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 void hdmi_wp_audio_config_format( + struct hdmi_audio_format *aud_fmt) +{ + u32 r; + + DSSDBG("Enter hdmi_wp_audio_config_format\n"); + + r = hdmi_read_reg(HDMI_WP_AUDIO_CFG); + r = FLD_MOD(r, aud_fmt->stereo_channels, 26, 24); + r = FLD_MOD(r, aud_fmt->active_chnnls_msk, 23, 16); + r = FLD_MOD(r, aud_fmt->en_sig_blk_strt_end, 5, 5); + r = FLD_MOD(r, aud_fmt->type, 4, 4); + r = FLD_MOD(r, aud_fmt->justification, 3, 3); + r = FLD_MOD(r, aud_fmt->sample_order, 2, 2); + r = FLD_MOD(r, aud_fmt->samples_per_word, 1, 1); + r = FLD_MOD(r, aud_fmt->sample_size, 0, 0); + hdmi_write_reg(HDMI_WP_AUDIO_CFG, r); +} + +static void hdmi_wp_audio_config_dma(struct hdmi_audio_dma *aud_dma) +{ + u32 r; + + DSSDBG("Enter hdmi_wp_audio_config_dma\n"); + + r = hdmi_read_reg(HDMI_WP_AUDIO_CFG2); + r = FLD_MOD(r, aud_dma->transfer_size, 15, 8); + r = FLD_MOD(r, aud_dma->block_size, 7, 0); + hdmi_write_reg(HDMI_WP_AUDIO_CFG2, r); + + r = hdmi_read_reg(HDMI_WP_AUDIO_CTRL); + r = FLD_MOD(r, aud_dma->mode, 9, 9); + r = FLD_MOD(r, aud_dma->fifo_threshold, 8, 0); + hdmi_write_reg(HDMI_WP_AUDIO_CTRL, r); +} + +static void hdmi_core_audio_config(struct hdmi_core_audio_config *cfg) +{ + u32 r; + + /* audio clock recovery parameters */ + r = hdmi_read_reg(HDMI_CORE_AV_ACR_CTRL); + r = FLD_MOD(r, cfg->use_mclk, 2, 2); + r = FLD_MOD(r, cfg->en_acr_pkt, 1, 1); + r = FLD_MOD(r, cfg->cts_mode, 0, 0); + hdmi_write_reg(HDMI_CORE_AV_ACR_CTRL, r); + + REG_FLD_MOD(HDMI_CORE_AV_N_SVAL1, cfg->n, 7, 0); + REG_FLD_MOD(HDMI_CORE_AV_N_SVAL2, cfg->n >> 8, 7, 0); + REG_FLD_MOD(HDMI_CORE_AV_N_SVAL3, cfg->n >> 16, 7, 0); + + if (cfg->cts_mode == HDMI_AUDIO_CTS_MODE_SW) { + REG_FLD_MOD(HDMI_CORE_AV_CTS_SVAL1, cfg->cts, 7, 0); + REG_FLD_MOD(HDMI_CORE_AV_CTS_SVAL2, cfg->cts >> 8, 7, 0); + REG_FLD_MOD(HDMI_CORE_AV_CTS_SVAL3, cfg->cts >> 16, 7, 0); + } else { + /* + * HDMI IP uses this configuration to divide the MCLK to + * update CTS value. + */ + REG_FLD_MOD(HDMI_CORE_AV_FREQ_SVAL, cfg->mclk_mode, 2, 0); + + /* Configure clock for audio packets */ + REG_FLD_MOD(HDMI_CORE_AV_AUD_PAR_BUSCLK_1, + cfg->aud_par_busclk, 7, 0); + REG_FLD_MOD(HDMI_CORE_AV_AUD_PAR_BUSCLK_2, + (cfg->aud_par_busclk >> 8), 7, 0); + REG_FLD_MOD(HDMI_CORE_AV_AUD_PAR_BUSCLK_3, + (cfg->aud_par_busclk >> 16), 7, 0); + } + + /* Override of SPDIF sample frequency with value in I2S_CHST4 */ + REG_FLD_MOD(HDMI_CORE_AV_SPDIF_CTRL, cfg->fs_override, 1, 1); + + /* I2S parameters */ + REG_FLD_MOD(HDMI_CORE_AV_I2S_CHST4, cfg->freq_sample, 3, 0); + + r = hdmi_read_reg(HDMI_CORE_AV_I2S_IN_CTRL); + r = FLD_MOD(r, cfg->i2s_cfg.en_high_bitrate_aud, 7, 7); + r = FLD_MOD(r, cfg->i2s_cfg.sck_edge_mode, 6, 6); + r = FLD_MOD(r, cfg->i2s_cfg.cbit_order, 5, 5); + r = FLD_MOD(r, cfg->i2s_cfg.vbit, 4, 4); + r = FLD_MOD(r, cfg->i2s_cfg.ws_polarity, 3, 3); + r = FLD_MOD(r, cfg->i2s_cfg.justification, 2, 2); + r = FLD_MOD(r, cfg->i2s_cfg.direction, 1, 1); + r = FLD_MOD(r, cfg->i2s_cfg.shift, 0, 0); + hdmi_write_reg(HDMI_CORE_AV_I2S_IN_CTRL, r); + + r = hdmi_read_reg(HDMI_CORE_AV_I2S_CHST5); + r = FLD_MOD(r, cfg->freq_sample, 7, 4); + r = FLD_MOD(r, cfg->i2s_cfg.word_length, 3, 1); + r = FLD_MOD(r, cfg->i2s_cfg.word_max_length, 0, 0); + hdmi_write_reg(HDMI_CORE_AV_I2S_CHST5, r); + + REG_FLD_MOD(HDMI_CORE_AV_I2S_IN_LEN, cfg->i2s_cfg.in_length_bits, 3, 0); + + /* Audio channels and mode parameters */ + REG_FLD_MOD(HDMI_CORE_AV_HDMI_CTRL, cfg->layout, 2, 1); + r = hdmi_read_reg(HDMI_CORE_AV_AUD_MODE); + r = FLD_MOD(r, cfg->i2s_cfg.active_sds, 7, 4); + r = FLD_MOD(r, cfg->en_dsd_audio, 3, 3); + r = FLD_MOD(r, cfg->en_parallel_aud_input, 2, 2); + r = FLD_MOD(r, cfg->en_spdif, 1, 1); + hdmi_write_reg(HDMI_CORE_AV_AUD_MODE, r); +} + +static void hdmi_core_audio_infoframe_config( + struct hdmi_core_infoframe_audio *info_aud) +{ + u8 val; + u8 sum = 0, checksum = 0; + + /* + * Set audio info frame type, version and length as + * described in HDMI 1.4a Section 8.2.2 specification. + * Checksum calculation is defined in Section 5.3.5. + */ + hdmi_write_reg(HDMI_CORE_AV_AUDIO_TYPE, 0x84); + hdmi_write_reg(HDMI_CORE_AV_AUDIO_VERS, 0x01); + hdmi_write_reg(HDMI_CORE_AV_AUDIO_LEN, 0x0a); + sum += 0x84 + 0x001 + 0x00a; + + val = (info_aud->db1_coding_type << 4) + | (info_aud->db1_channel_count - 1); + hdmi_write_reg(HDMI_CORE_AV_AUD_DBYTE(0), val); + sum += val; + + val = (info_aud->db2_sample_freq << 2) | info_aud->db2_sample_size; + hdmi_write_reg(HDMI_CORE_AV_AUD_DBYTE(1), val); + sum += val; + + hdmi_write_reg(HDMI_CORE_AV_AUD_DBYTE(2), 0x00); + + val = info_aud->db4_channel_alloc; + hdmi_write_reg(HDMI_CORE_AV_AUD_DBYTE(3), val); + sum += val; + + val = (info_aud->db5_downmix_inh << 7) | (info_aud->db5_lsv << 3); + hdmi_write_reg(HDMI_CORE_AV_AUD_DBYTE(4), val); + sum += val; + + hdmi_write_reg(HDMI_CORE_AV_AUD_DBYTE(5), 0x00); + hdmi_write_reg(HDMI_CORE_AV_AUD_DBYTE(6), 0x00); + hdmi_write_reg(HDMI_CORE_AV_AUD_DBYTE(7), 0x00); + hdmi_write_reg(HDMI_CORE_AV_AUD_DBYTE(8), 0x00); + hdmi_write_reg(HDMI_CORE_AV_AUD_DBYTE(9), 0x00); + + checksum = 0x100 - sum; + hdmi_write_reg(HDMI_CORE_AV_AUDIO_CHSUM, checksum); + + /* + * TODO: Add MPEG and SPD enable and repeat cfg when EDID parsing + * is available. + */ +} + +static int hdmi_config_audio_acr(u32 sample_freq, u32 *n, u32 *cts) +{ + u32 r; + u32 deep_color = 0; + u32 pclk = hdmi.cfg.timings.timings.pixel_clock; + + if (n == NULL || cts == NULL) + return -EINVAL; + /* + * Obtain current deep color configuration. This needed + * to calculate the TMDS clock based on the pixel clock. + */ + r = REG_GET(HDMI_WP_VIDEO_CFG, 1, 0); + switch (r) { + case 1: /* No deep color selected */ + deep_color = 100; + break; + case 2: /* 10-bit deep color selected */ + deep_color = 125; + break; + case 3: /* 12-bit deep color selected */ + deep_color = 150; + break; + default: + return -EINVAL; + } + + switch (sample_freq) { + case 32000: + if ((deep_color == 125) && ((pclk == 54054) + || (pclk == 74250))) + *n = 8192; + else + *n = 4096; + break; + case 44100: + *n = 6272; + break; + case 48000: + if ((deep_color == 125) && ((pclk == 54054) + || (pclk == 74250))) + *n = 8192; + else + *n = 6144; + break; + default: + *n = 0; + return -EINVAL; + } + + /* Calculate CTS. See HDMI 1.3a or 1.4a specifications */ + *cts = pclk * (*n / 128) * deep_color / (sample_freq / 10); + + return 0; +} + +static int hdmi_audio_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct snd_soc_dai *dai) +{ + 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(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(&audio_dma); + hdmi_wp_audio_config_format(&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 = false; + } else { + core_cfg.aud_par_busclk = (((128 * 31) - 1) << 8); + core_cfg.cts_mode = HDMI_AUDIO_CTS_MODE_HW; + core_cfg.use_mclk = true; + 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(&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(&aud_if_cfg); + return 0; +} + +static int hdmi_audio_trigger(struct snd_pcm_substream *substream, int cmd, + struct snd_soc_dai *dai) +{ + int err = 0; + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + REG_FLD_MOD(HDMI_CORE_AV_AUD_MODE, 1, 0, 0); + REG_FLD_MOD(HDMI_WP_AUDIO_CTRL, 1, 31, 31); + REG_FLD_MOD(HDMI_WP_AUDIO_CTRL, 1, 30, 30); + break; + + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + REG_FLD_MOD(HDMI_CORE_AV_AUD_MODE, 0, 0, 0); + REG_FLD_MOD(HDMI_WP_AUDIO_CTRL, 0, 30, 30); + REG_FLD_MOD(HDMI_WP_AUDIO_CTRL, 0, 31, 31); + break; + default: + err = -EINVAL; + } + return err; +} + +static int hdmi_audio_startup(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + if (!hdmi.mode) { + pr_err("Current video settings do not support audio.\n"); + return -EIO; + } + return 0; +} + +static struct snd_soc_codec_driver hdmi_audio_codec_drv = { +}; + +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; + + clk = clk_get(&pdev->dev, "dss_48mhz_clk"); + if (IS_ERR(clk)) { + DSSERR("can't get hdmi_clk\n"); + clk_put(hdmi.sys_clk); + return PTR_ERR(clk); + } + + hdmi.hdmi_clk = clk; + + return 0; +} + +static void hdmi_put_clocks(void) +{ + if (hdmi.sys_clk) + clk_put(hdmi.sys_clk); + if (hdmi.hdmi_clk) + clk_put(hdmi.hdmi_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.base_wp = ioremap(hdmi_mem->start, resource_size(hdmi_mem)); + if (!hdmi.base_wp) { + DSSERR("can't ioremap WP\n"); + return -ENOMEM; + } + + r = hdmi_get_clocks(pdev); + if (r) { + iounmap(hdmi.base_wp); + return r; + } + + pm_runtime_enable(&pdev->dev); + + 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.base_wp); + + return 0; +} + +static int hdmi_runtime_suspend(struct device *dev) +{ + clk_disable(hdmi.hdmi_clk); + 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); + clk_enable(hdmi.hdmi_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); +} |