diff options
Diffstat (limited to 'drivers/gpu/drm/imx/imx-hdmi.c')
| -rw-r--r-- | drivers/gpu/drm/imx/imx-hdmi.c | 1766 |
1 files changed, 0 insertions, 1766 deletions
diff --git a/drivers/gpu/drm/imx/imx-hdmi.c b/drivers/gpu/drm/imx/imx-hdmi.c deleted file mode 100644 index ddc53e0..0000000 --- a/drivers/gpu/drm/imx/imx-hdmi.c +++ /dev/null @@ -1,1766 +0,0 @@ -/* - * Copyright (C) 2011-2013 Freescale Semiconductor, Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * SH-Mobile High-Definition Multimedia Interface (HDMI) driver - * for SLISHDMI13T and SLIPHDMIT IP cores - * - * Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de> - */ - -#include <linux/component.h> -#include <linux/irq.h> -#include <linux/delay.h> -#include <linux/err.h> -#include <linux/clk.h> -#include <linux/hdmi.h> -#include <linux/regmap.h> -#include <linux/mfd/syscon.h> -#include <linux/mfd/syscon/imx6q-iomuxc-gpr.h> -#include <linux/of_device.h> - -#include <drm/drmP.h> -#include <drm/drm_crtc_helper.h> -#include <drm/drm_edid.h> -#include <drm/drm_encoder_slave.h> -#include <video/imx-ipu-v3.h> - -#include "imx-hdmi.h" -#include "imx-drm.h" - -#define HDMI_EDID_LEN 512 - -#define RGB 0 -#define YCBCR444 1 -#define YCBCR422_16BITS 2 -#define YCBCR422_8BITS 3 -#define XVYCC444 4 - -enum hdmi_datamap { - RGB444_8B = 0x01, - RGB444_10B = 0x03, - RGB444_12B = 0x05, - RGB444_16B = 0x07, - YCbCr444_8B = 0x09, - YCbCr444_10B = 0x0B, - YCbCr444_12B = 0x0D, - YCbCr444_16B = 0x0F, - YCbCr422_8B = 0x16, - YCbCr422_10B = 0x14, - YCbCr422_12B = 0x12, -}; - -enum imx_hdmi_devtype { - IMX6Q_HDMI, - IMX6DL_HDMI, -}; - -static const u16 csc_coeff_default[3][4] = { - { 0x2000, 0x0000, 0x0000, 0x0000 }, - { 0x0000, 0x2000, 0x0000, 0x0000 }, - { 0x0000, 0x0000, 0x2000, 0x0000 } -}; - -static const u16 csc_coeff_rgb_out_eitu601[3][4] = { - { 0x2000, 0x6926, 0x74fd, 0x010e }, - { 0x2000, 0x2cdd, 0x0000, 0x7e9a }, - { 0x2000, 0x0000, 0x38b4, 0x7e3b } -}; - -static const u16 csc_coeff_rgb_out_eitu709[3][4] = { - { 0x2000, 0x7106, 0x7a02, 0x00a7 }, - { 0x2000, 0x3264, 0x0000, 0x7e6d }, - { 0x2000, 0x0000, 0x3b61, 0x7e25 } -}; - -static const u16 csc_coeff_rgb_in_eitu601[3][4] = { - { 0x2591, 0x1322, 0x074b, 0x0000 }, - { 0x6535, 0x2000, 0x7acc, 0x0200 }, - { 0x6acd, 0x7534, 0x2000, 0x0200 } -}; - -static const u16 csc_coeff_rgb_in_eitu709[3][4] = { - { 0x2dc5, 0x0d9b, 0x049e, 0x0000 }, - { 0x62f0, 0x2000, 0x7d11, 0x0200 }, - { 0x6756, 0x78ab, 0x2000, 0x0200 } -}; - -struct hdmi_vmode { - bool mdvi; - bool mhsyncpolarity; - bool mvsyncpolarity; - bool minterlaced; - bool mdataenablepolarity; - - unsigned int mpixelclock; - unsigned int mpixelrepetitioninput; - unsigned int mpixelrepetitionoutput; -}; - -struct hdmi_data_info { - unsigned int enc_in_format; - unsigned int enc_out_format; - unsigned int enc_color_depth; - unsigned int colorimetry; - unsigned int pix_repet_factor; - unsigned int hdcp_enable; - struct hdmi_vmode video_mode; -}; - -struct imx_hdmi { - struct drm_connector connector; - struct drm_encoder encoder; - - enum imx_hdmi_devtype dev_type; - struct device *dev; - struct clk *isfr_clk; - struct clk *iahb_clk; - - struct hdmi_data_info hdmi_data; - int vic; - - u8 edid[HDMI_EDID_LEN]; - bool cable_plugin; - - bool phy_enabled; - struct drm_display_mode previous_mode; - - struct regmap *regmap; - struct i2c_adapter *ddc; - void __iomem *regs; - - unsigned int sample_rate; - int ratio; -}; - -static void imx_hdmi_set_ipu_di_mux(struct imx_hdmi *hdmi, int ipu_di) -{ - regmap_update_bits(hdmi->regmap, IOMUXC_GPR3, - IMX6Q_GPR3_HDMI_MUX_CTL_MASK, - ipu_di << IMX6Q_GPR3_HDMI_MUX_CTL_SHIFT); -} - -static inline void hdmi_writeb(struct imx_hdmi *hdmi, u8 val, int offset) -{ - writeb(val, hdmi->regs + offset); -} - -static inline u8 hdmi_readb(struct imx_hdmi *hdmi, int offset) -{ - return readb(hdmi->regs + offset); -} - -static void hdmi_modb(struct imx_hdmi *hdmi, u8 data, u8 mask, unsigned reg) -{ - u8 val = hdmi_readb(hdmi, reg) & ~mask; - - val |= data & mask; - hdmi_writeb(hdmi, val, reg); -} - -static void hdmi_mask_writeb(struct imx_hdmi *hdmi, u8 data, unsigned int reg, - u8 shift, u8 mask) -{ - hdmi_modb(hdmi, data << shift, mask, reg); -} - -static void hdmi_set_clock_regenerator_n(struct imx_hdmi *hdmi, - unsigned int value) -{ - hdmi_writeb(hdmi, value & 0xff, HDMI_AUD_N1); - hdmi_writeb(hdmi, (value >> 8) & 0xff, HDMI_AUD_N2); - hdmi_writeb(hdmi, (value >> 16) & 0x0f, HDMI_AUD_N3); - - /* nshift factor = 0 */ - hdmi_modb(hdmi, 0, HDMI_AUD_CTS3_N_SHIFT_MASK, HDMI_AUD_CTS3); -} - -static void hdmi_regenerate_cts(struct imx_hdmi *hdmi, unsigned int cts) -{ - /* Must be set/cleared first */ - hdmi_modb(hdmi, 0, HDMI_AUD_CTS3_CTS_MANUAL, HDMI_AUD_CTS3); - - hdmi_writeb(hdmi, cts & 0xff, HDMI_AUD_CTS1); - hdmi_writeb(hdmi, (cts >> 8) & 0xff, HDMI_AUD_CTS2); - hdmi_writeb(hdmi, ((cts >> 16) & HDMI_AUD_CTS3_AUDCTS19_16_MASK) | - HDMI_AUD_CTS3_CTS_MANUAL, HDMI_AUD_CTS3); -} - -static unsigned int hdmi_compute_n(unsigned int freq, unsigned long pixel_clk, - unsigned int ratio) -{ - unsigned int n = (128 * freq) / 1000; - - switch (freq) { - case 32000: - if (pixel_clk == 25170000) - n = (ratio == 150) ? 9152 : 4576; - else if (pixel_clk == 27020000) - n = (ratio == 150) ? 8192 : 4096; - else if (pixel_clk == 74170000 || pixel_clk == 148350000) - n = 11648; - else - n = 4096; - break; - - case 44100: - if (pixel_clk == 25170000) - n = 7007; - else if (pixel_clk == 74170000) - n = 17836; - else if (pixel_clk == 148350000) - n = (ratio == 150) ? 17836 : 8918; - else - n = 6272; - break; - - case 48000: - if (pixel_clk == 25170000) - n = (ratio == 150) ? 9152 : 6864; - else if (pixel_clk == 27020000) - n = (ratio == 150) ? 8192 : 6144; - else if (pixel_clk == 74170000) - n = 11648; - else if (pixel_clk == 148350000) - n = (ratio == 150) ? 11648 : 5824; - else - n = 6144; - break; - - case 88200: - n = hdmi_compute_n(44100, pixel_clk, ratio) * 2; - break; - - case 96000: - n = hdmi_compute_n(48000, pixel_clk, ratio) * 2; - break; - - case 176400: - n = hdmi_compute_n(44100, pixel_clk, ratio) * 4; - break; - - case 192000: - n = hdmi_compute_n(48000, pixel_clk, ratio) * 4; - break; - - default: - break; - } - - return n; -} - -static unsigned int hdmi_compute_cts(unsigned int freq, unsigned long pixel_clk, - unsigned int ratio) -{ - unsigned int cts = 0; - - pr_debug("%s: freq: %d pixel_clk: %ld ratio: %d\n", __func__, freq, - pixel_clk, ratio); - - switch (freq) { - case 32000: - if (pixel_clk == 297000000) { - cts = 222750; - break; - } - case 48000: - case 96000: - case 192000: - switch (pixel_clk) { - case 25200000: - case 27000000: - case 54000000: - case 74250000: - case 148500000: - cts = pixel_clk / 1000; - break; - case 297000000: - cts = 247500; - break; - /* - * All other TMDS clocks are not supported by - * DWC_hdmi_tx. The TMDS clocks divided or - * multiplied by 1,001 coefficients are not - * supported. - */ - default: - break; - } - break; - case 44100: - case 88200: - case 176400: - switch (pixel_clk) { - case 25200000: - cts = 28000; - break; - case 27000000: - cts = 30000; - break; - case 54000000: - cts = 60000; - break; - case 74250000: - cts = 82500; - break; - case 148500000: - cts = 165000; - break; - case 297000000: - cts = 247500; - break; - default: - break; - } - break; - default: - break; - } - if (ratio == 100) - return cts; - return (cts * ratio) / 100; -} - -static void hdmi_set_clk_regenerator(struct imx_hdmi *hdmi, - unsigned long pixel_clk) -{ - unsigned int clk_n, clk_cts; - - clk_n = hdmi_compute_n(hdmi->sample_rate, pixel_clk, - hdmi->ratio); - clk_cts = hdmi_compute_cts(hdmi->sample_rate, pixel_clk, - hdmi->ratio); - - if (!clk_cts) { - dev_dbg(hdmi->dev, "%s: pixel clock not supported: %lu\n", - __func__, pixel_clk); - return; - } - - dev_dbg(hdmi->dev, "%s: samplerate=%d ratio=%d pixelclk=%lu N=%d cts=%d\n", - __func__, hdmi->sample_rate, hdmi->ratio, - pixel_clk, clk_n, clk_cts); - - hdmi_set_clock_regenerator_n(hdmi, clk_n); - hdmi_regenerate_cts(hdmi, clk_cts); -} - -static void hdmi_init_clk_regenerator(struct imx_hdmi *hdmi) -{ - hdmi_set_clk_regenerator(hdmi, 74250000); -} - -static void hdmi_clk_regenerator_update_pixel_clock(struct imx_hdmi *hdmi) -{ - hdmi_set_clk_regenerator(hdmi, hdmi->hdmi_data.video_mode.mpixelclock); -} - -/* - * this submodule is responsible for the video data synchronization. - * for example, for RGB 4:4:4 input, the data map is defined as - * pin{47~40} <==> R[7:0] - * pin{31~24} <==> G[7:0] - * pin{15~8} <==> B[7:0] - */ -static void hdmi_video_sample(struct imx_hdmi *hdmi) -{ - int color_format = 0; - u8 val; - - if (hdmi->hdmi_data.enc_in_format == RGB) { - if (hdmi->hdmi_data.enc_color_depth == 8) - color_format = 0x01; - else if (hdmi->hdmi_data.enc_color_depth == 10) - color_format = 0x03; - else if (hdmi->hdmi_data.enc_color_depth == 12) - color_format = 0x05; - else if (hdmi->hdmi_data.enc_color_depth == 16) - color_format = 0x07; - else - return; - } else if (hdmi->hdmi_data.enc_in_format == YCBCR444) { - if (hdmi->hdmi_data.enc_color_depth == 8) - color_format = 0x09; - else if (hdmi->hdmi_data.enc_color_depth == 10) - color_format = 0x0B; - else if (hdmi->hdmi_data.enc_color_depth == 12) - color_format = 0x0D; - else if (hdmi->hdmi_data.enc_color_depth == 16) - color_format = 0x0F; - else - return; - } else if (hdmi->hdmi_data.enc_in_format == YCBCR422_8BITS) { - if (hdmi->hdmi_data.enc_color_depth == 8) - color_format = 0x16; - else if (hdmi->hdmi_data.enc_color_depth == 10) - color_format = 0x14; - else if (hdmi->hdmi_data.enc_color_depth == 12) - color_format = 0x12; - else - return; - } - - val = HDMI_TX_INVID0_INTERNAL_DE_GENERATOR_DISABLE | - ((color_format << HDMI_TX_INVID0_VIDEO_MAPPING_OFFSET) & - HDMI_TX_INVID0_VIDEO_MAPPING_MASK); - hdmi_writeb(hdmi, val, HDMI_TX_INVID0); - - /* Enable TX stuffing: When DE is inactive, fix the output data to 0 */ - val = HDMI_TX_INSTUFFING_BDBDATA_STUFFING_ENABLE | - HDMI_TX_INSTUFFING_RCRDATA_STUFFING_ENABLE | - HDMI_TX_INSTUFFING_GYDATA_STUFFING_ENABLE; - hdmi_writeb(hdmi, val, HDMI_TX_INSTUFFING); - hdmi_writeb(hdmi, 0x0, HDMI_TX_GYDATA0); - hdmi_writeb(hdmi, 0x0, HDMI_TX_GYDATA1); - hdmi_writeb(hdmi, 0x0, HDMI_TX_RCRDATA0); - hdmi_writeb(hdmi, 0x0, HDMI_TX_RCRDATA1); - hdmi_writeb(hdmi, 0x0, HDMI_TX_BCBDATA0); - hdmi_writeb(hdmi, 0x0, HDMI_TX_BCBDATA1); -} - -static int is_color_space_conversion(struct imx_hdmi *hdmi) -{ - return hdmi->hdmi_data.enc_in_format != hdmi->hdmi_data.enc_out_format; -} - -static int is_color_space_decimation(struct imx_hdmi *hdmi) -{ - if (hdmi->hdmi_data.enc_out_format != YCBCR422_8BITS) - return 0; - if (hdmi->hdmi_data.enc_in_format == RGB || - hdmi->hdmi_data.enc_in_format == YCBCR444) - return 1; - return 0; -} - -static int is_color_space_interpolation(struct imx_hdmi *hdmi) -{ - if (hdmi->hdmi_data.enc_in_format != YCBCR422_8BITS) - return 0; - if (hdmi->hdmi_data.enc_out_format == RGB || - hdmi->hdmi_data.enc_out_format == YCBCR444) - return 1; - return 0; -} - -static void imx_hdmi_update_csc_coeffs(struct imx_hdmi *hdmi) -{ - const u16 (*csc_coeff)[3][4] = &csc_coeff_default; - unsigned i; - u32 csc_scale = 1; - - if (is_color_space_conversion(hdmi)) { - if (hdmi->hdmi_data.enc_out_format == RGB) { - if (hdmi->hdmi_data.colorimetry == - HDMI_COLORIMETRY_ITU_601) - csc_coeff = &csc_coeff_rgb_out_eitu601; - else - csc_coeff = &csc_coeff_rgb_out_eitu709; - } else if (hdmi->hdmi_data.enc_in_format == RGB) { - if (hdmi->hdmi_data.colorimetry == - HDMI_COLORIMETRY_ITU_601) - csc_coeff = &csc_coeff_rgb_in_eitu601; - else - csc_coeff = &csc_coeff_rgb_in_eitu709; - csc_scale = 0; - } - } - - /* The CSC registers are sequential, alternating MSB then LSB */ - for (i = 0; i < ARRAY_SIZE(csc_coeff_default[0]); i++) { - u16 coeff_a = (*csc_coeff)[0][i]; - u16 coeff_b = (*csc_coeff)[1][i]; - u16 coeff_c = (*csc_coeff)[2][i]; - - hdmi_writeb(hdmi, coeff_a & 0xff, - HDMI_CSC_COEF_A1_LSB + i * 2); - hdmi_writeb(hdmi, coeff_a >> 8, HDMI_CSC_COEF_A1_MSB + i * 2); - hdmi_writeb(hdmi, coeff_b & 0xff, HDMI_CSC_COEF_B1_LSB + i * 2); - hdmi_writeb(hdmi, coeff_b >> 8, HDMI_CSC_COEF_B1_MSB + i * 2); - hdmi_writeb(hdmi, coeff_c & 0xff, - HDMI_CSC_COEF_C1_LSB + i * 2); - hdmi_writeb(hdmi, coeff_c >> 8, HDMI_CSC_COEF_C1_MSB + i * 2); - } - - hdmi_modb(hdmi, csc_scale, HDMI_CSC_SCALE_CSCSCALE_MASK, - HDMI_CSC_SCALE); -} - -static void hdmi_video_csc(struct imx_hdmi *hdmi) -{ - int color_depth = 0; - int interpolation = HDMI_CSC_CFG_INTMODE_DISABLE; - int decimation = 0; - - /* YCC422 interpolation to 444 mode */ - if (is_color_space_interpolation(hdmi)) - interpolation = HDMI_CSC_CFG_INTMODE_CHROMA_INT_FORMULA1; - else if (is_color_space_decimation(hdmi)) - decimation = HDMI_CSC_CFG_DECMODE_CHROMA_INT_FORMULA3; - - if (hdmi->hdmi_data.enc_color_depth == 8) - color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_24BPP; - else if (hdmi->hdmi_data.enc_color_depth == 10) - color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_30BPP; - else if (hdmi->hdmi_data.enc_color_depth == 12) - color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_36BPP; - else if (hdmi->hdmi_data.enc_color_depth == 16) - color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_48BPP; - else - return; - - /* Configure the CSC registers */ - hdmi_writeb(hdmi, interpolation | decimation, HDMI_CSC_CFG); - hdmi_modb(hdmi, color_depth, HDMI_CSC_SCALE_CSC_COLORDE_PTH_MASK, - HDMI_CSC_SCALE); - - imx_hdmi_update_csc_coeffs(hdmi); -} - -/* - * HDMI video packetizer is used to packetize the data. - * for example, if input is YCC422 mode or repeater is used, - * data should be repacked this module can be bypassed. - */ -static void hdmi_video_packetize(struct imx_hdmi *hdmi) -{ - unsigned int color_depth = 0; - unsigned int remap_size = HDMI_VP_REMAP_YCC422_16bit; - unsigned int output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_PP; - struct hdmi_data_info *hdmi_data = &hdmi->hdmi_data; - u8 val, vp_conf; - - if (hdmi_data->enc_out_format == RGB - || hdmi_data->enc_out_format == YCBCR444) { - if (!hdmi_data->enc_color_depth) - output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_BYPASS; - else if (hdmi_data->enc_color_depth == 8) { - color_depth = 4; - output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_BYPASS; - } else if (hdmi_data->enc_color_depth == 10) - color_depth = 5; - else if (hdmi_data->enc_color_depth == 12) - color_depth = 6; - else if (hdmi_data->enc_color_depth == 16) - color_depth = 7; - else - return; - } else if (hdmi_data->enc_out_format == YCBCR422_8BITS) { - if (!hdmi_data->enc_color_depth || - hdmi_data->enc_color_depth == 8) - remap_size = HDMI_VP_REMAP_YCC422_16bit; - else if (hdmi_data->enc_color_depth == 10) - remap_size = HDMI_VP_REMAP_YCC422_20bit; - else if (hdmi_data->enc_color_depth == 12) - remap_size = HDMI_VP_REMAP_YCC422_24bit; - else - return; - output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_YCC422; - } else - return; - - /* set the packetizer registers */ - val = ((color_depth << HDMI_VP_PR_CD_COLOR_DEPTH_OFFSET) & - HDMI_VP_PR_CD_COLOR_DEPTH_MASK) | - ((hdmi_data->pix_repet_factor << - HDMI_VP_PR_CD_DESIRED_PR_FACTOR_OFFSET) & - HDMI_VP_PR_CD_DESIRED_PR_FACTOR_MASK); - hdmi_writeb(hdmi, val, HDMI_VP_PR_CD); - - hdmi_modb(hdmi, HDMI_VP_STUFF_PR_STUFFING_STUFFING_MODE, - HDMI_VP_STUFF_PR_STUFFING_MASK, HDMI_VP_STUFF); - - /* Data from pixel repeater block */ - if (hdmi_data->pix_repet_factor > 1) { - vp_conf = HDMI_VP_CONF_PR_EN_ENABLE | - HDMI_VP_CONF_BYPASS_SELECT_PIX_REPEATER; - } else { /* data from packetizer block */ - vp_conf = HDMI_VP_CONF_PR_EN_DISABLE | - HDMI_VP_CONF_BYPASS_SELECT_VID_PACKETIZER; - } - - hdmi_modb(hdmi, vp_conf, - HDMI_VP_CONF_PR_EN_MASK | - HDMI_VP_CONF_BYPASS_SELECT_MASK, HDMI_VP_CONF); - - hdmi_modb(hdmi, 1 << HDMI_VP_STUFF_IDEFAULT_PHASE_OFFSET, - HDMI_VP_STUFF_IDEFAULT_PHASE_MASK, HDMI_VP_STUFF); - - hdmi_writeb(hdmi, remap_size, HDMI_VP_REMAP); - - if (output_select == HDMI_VP_CONF_OUTPUT_SELECTOR_PP) { - vp_conf = HDMI_VP_CONF_BYPASS_EN_DISABLE | - HDMI_VP_CONF_PP_EN_ENABLE | - HDMI_VP_CONF_YCC422_EN_DISABLE; - } else if (output_select == HDMI_VP_CONF_OUTPUT_SELECTOR_YCC422) { - vp_conf = HDMI_VP_CONF_BYPASS_EN_DISABLE | - HDMI_VP_CONF_PP_EN_DISABLE | - HDMI_VP_CONF_YCC422_EN_ENABLE; - } else if (output_select == HDMI_VP_CONF_OUTPUT_SELECTOR_BYPASS) { - vp_conf = HDMI_VP_CONF_BYPASS_EN_ENABLE | - HDMI_VP_CONF_PP_EN_DISABLE | - HDMI_VP_CONF_YCC422_EN_DISABLE; - } else { - return; - } - - hdmi_modb(hdmi, vp_conf, - HDMI_VP_CONF_BYPASS_EN_MASK | HDMI_VP_CONF_PP_EN_ENMASK | - HDMI_VP_CONF_YCC422_EN_MASK, HDMI_VP_CONF); - - hdmi_modb(hdmi, HDMI_VP_STUFF_PP_STUFFING_STUFFING_MODE | - HDMI_VP_STUFF_YCC422_STUFFING_STUFFING_MODE, - HDMI_VP_STUFF_PP_STUFFING_MASK | - HDMI_VP_STUFF_YCC422_STUFFING_MASK, HDMI_VP_STUFF); - - hdmi_modb(hdmi, output_select, HDMI_VP_CONF_OUTPUT_SELECTOR_MASK, - HDMI_VP_CONF); -} - -static inline void hdmi_phy_test_clear(struct imx_hdmi *hdmi, - unsigned char bit) -{ - hdmi_modb(hdmi, bit << HDMI_PHY_TST0_TSTCLR_OFFSET, - HDMI_PHY_TST0_TSTCLR_MASK, HDMI_PHY_TST0); -} - -static inline void hdmi_phy_test_enable(struct imx_hdmi *hdmi, - unsigned char bit) -{ - hdmi_modb(hdmi, bit << HDMI_PHY_TST0_TSTEN_OFFSET, - HDMI_PHY_TST0_TSTEN_MASK, HDMI_PHY_TST0); -} - -static inline void hdmi_phy_test_clock(struct imx_hdmi *hdmi, - unsigned char bit) -{ - hdmi_modb(hdmi, bit << HDMI_PHY_TST0_TSTCLK_OFFSET, - HDMI_PHY_TST0_TSTCLK_MASK, HDMI_PHY_TST0); -} - -static inline void hdmi_phy_test_din(struct imx_hdmi *hdmi, - unsigned char bit) -{ - hdmi_writeb(hdmi, bit, HDMI_PHY_TST1); -} - -static inline void hdmi_phy_test_dout(struct imx_hdmi *hdmi, - unsigned char bit) -{ - hdmi_writeb(hdmi, bit, HDMI_PHY_TST2); -} - -static bool hdmi_phy_wait_i2c_done(struct imx_hdmi *hdmi, int msec) -{ - while ((hdmi_readb(hdmi, HDMI_IH_I2CMPHY_STAT0) & 0x3) == 0) { - if (msec-- == 0) - return false; - udelay(1000); - } - return true; -} - -static void __hdmi_phy_i2c_write(struct imx_hdmi *hdmi, unsigned short data, - unsigned char addr) -{ - hdmi_writeb(hdmi, 0xFF, HDMI_IH_I2CMPHY_STAT0); - hdmi_writeb(hdmi, addr, HDMI_PHY_I2CM_ADDRESS_ADDR); - hdmi_writeb(hdmi, (unsigned char)(data >> 8), - HDMI_PHY_I2CM_DATAO_1_ADDR); - hdmi_writeb(hdmi, (unsigned char)(data >> 0), - HDMI_PHY_I2CM_DATAO_0_ADDR); - hdmi_writeb(hdmi, HDMI_PHY_I2CM_OPERATION_ADDR_WRITE, - HDMI_PHY_I2CM_OPERATION_ADDR); - hdmi_phy_wait_i2c_done(hdmi, 1000); -} - -static int hdmi_phy_i2c_write(struct imx_hdmi *hdmi, unsigned short data, - unsigned char addr) -{ - __hdmi_phy_i2c_write(hdmi, data, addr); - return 0; -} - -static void imx_hdmi_phy_enable_power(struct imx_hdmi *hdmi, u8 enable) -{ - hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0, - HDMI_PHY_CONF0_PDZ_OFFSET, - HDMI_PHY_CONF0_PDZ_MASK); -} - -static void imx_hdmi_phy_enable_tmds(struct imx_hdmi *hdmi, u8 enable) -{ - hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0, - HDMI_PHY_CONF0_ENTMDS_OFFSET, - HDMI_PHY_CONF0_ENTMDS_MASK); -} - -static void imx_hdmi_phy_gen2_pddq(struct imx_hdmi *hdmi, u8 enable) -{ - hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0, - HDMI_PHY_CONF0_GEN2_PDDQ_OFFSET, - HDMI_PHY_CONF0_GEN2_PDDQ_MASK); -} - -static void imx_hdmi_phy_gen2_txpwron(struct imx_hdmi *hdmi, u8 enable) -{ - hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0, - HDMI_PHY_CONF0_GEN2_TXPWRON_OFFSET, - HDMI_PHY_CONF0_GEN2_TXPWRON_MASK); -} - -static void imx_hdmi_phy_sel_data_en_pol(struct imx_hdmi *hdmi, u8 enable) -{ - hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0, - HDMI_PHY_CONF0_SELDATAENPOL_OFFSET, - HDMI_PHY_CONF0_SELDATAENPOL_MASK); -} - -static void imx_hdmi_phy_sel_interface_control(struct imx_hdmi *hdmi, u8 enable) -{ - hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0, - HDMI_PHY_CONF0_SELDIPIF_OFFSET, - HDMI_PHY_CONF0_SELDIPIF_MASK); -} - -enum { - RES_8, - RES_10, - RES_12, - RES_MAX, -}; - -struct mpll_config { - unsigned long mpixelclock; - struct { - u16 cpce; - u16 gmp; - } res[RES_MAX]; -}; - -static const struct mpll_config mpll_config[] = { - { - 45250000, { - { 0x01e0, 0x0000 }, - { 0x21e1, 0x0000 }, - { 0x41e2, 0x0000 } - }, - }, { - 92500000, { - { 0x0140, 0x0005 }, - { 0x2141, 0x0005 }, - { 0x4142, 0x0005 }, - }, - }, { - 148500000, { - { 0x00a0, 0x000a }, - { 0x20a1, 0x000a }, - { 0x40a2, 0x000a }, - }, - }, { - ~0UL, { - { 0x00a0, 0x000a }, - { 0x2001, 0x000f }, - { 0x4002, 0x000f }, - }, - } -}; - -struct curr_ctrl { - unsigned long mpixelclock; - u16 curr[RES_MAX]; -}; - -static const struct curr_ctrl curr_ctrl[] = { - /* pixelclk bpp8 bpp10 bpp12 */ - { - 54000000, { 0x091c, 0x091c, 0x06dc }, - }, { - 58400000, { 0x091c, 0x06dc, 0x06dc }, - }, { - 72000000, { 0x06dc, 0x06dc, 0x091c }, - }, { - 74250000, { 0x06dc, 0x0b5c, 0x091c }, - }, { - 118800000, { 0x091c, 0x091c, 0x06dc }, - }, { - 216000000, { 0x06dc, 0x0b5c, 0x091c }, - } -}; - -static int hdmi_phy_configure(struct imx_hdmi *hdmi, unsigned char prep, - unsigned char res, int cscon) -{ - unsigned res_idx, i; - u8 val, msec; - - if (prep) - return -EINVAL; - - switch (res) { - case 0: /* color resolution 0 is 8 bit colour depth */ - case 8: - res_idx = RES_8; - break; - case 10: - res_idx = RES_10; - break; - case 12: - res_idx = RES_12; - break; - default: - return -EINVAL; - } - - /* Enable csc path */ - if (cscon) - val = HDMI_MC_FLOWCTRL_FEED_THROUGH_OFF_CSC_IN_PATH; - else - val = HDMI_MC_FLOWCTRL_FEED_THROUGH_OFF_CSC_BYPASS; - - hdmi_writeb(hdmi, val, HDMI_MC_FLOWCTRL); - - /* gen2 tx power off */ - imx_hdmi_phy_gen2_txpwron(hdmi, 0); - - /* gen2 pddq */ - imx_hdmi_phy_gen2_pddq(hdmi, 1); - - /* PHY reset */ - hdmi_writeb(hdmi, HDMI_MC_PHYRSTZ_DEASSERT, HDMI_MC_PHYRSTZ); - hdmi_writeb(hdmi, HDMI_MC_PHYRSTZ_ASSERT, HDMI_MC_PHYRSTZ); - - hdmi_writeb(hdmi, HDMI_MC_HEACPHY_RST_ASSERT, HDMI_MC_HEACPHY_RST); - - hdmi_phy_test_clear(hdmi, 1); - hdmi_writeb(hdmi, HDMI_PHY_I2CM_SLAVE_ADDR_PHY_GEN2, - HDMI_PHY_I2CM_SLAVE_ADDR); - hdmi_phy_test_clear(hdmi, 0); - - /* PLL/MPLL Cfg - always match on final entry */ - for (i = 0; i < ARRAY_SIZE(mpll_config) - 1; i++) - if (hdmi->hdmi_data.video_mode.mpixelclock <= - mpll_config[i].mpixelclock) - break; - - hdmi_phy_i2c_write(hdmi, mpll_config[i].res[res_idx].cpce, 0x06); - hdmi_phy_i2c_write(hdmi, mpll_config[i].res[res_idx].gmp, 0x15); - - for (i = 0; i < ARRAY_SIZE(curr_ctrl); i++) - if (hdmi->hdmi_data.video_mode.mpixelclock <= - curr_ctrl[i].mpixelclock) - break; - - if (i >= ARRAY_SIZE(curr_ctrl)) { - dev_err(hdmi->dev, - "Pixel clock %d - unsupported by HDMI\n", - hdmi->hdmi_data.video_mode.mpixelclock); - return -EINVAL; - } - - /* CURRCTRL */ - hdmi_phy_i2c_write(hdmi, curr_ctrl[i].curr[res_idx], 0x10); - - hdmi_phy_i2c_write(hdmi, 0x0000, 0x13); /* PLLPHBYCTRL */ - hdmi_phy_i2c_write(hdmi, 0x0006, 0x17); - /* RESISTANCE TERM 133Ohm Cfg */ - hdmi_phy_i2c_write(hdmi, 0x0005, 0x19); /* TXTERM */ - /* PREEMP Cgf 0.00 */ - hdmi_phy_i2c_write(hdmi, 0x800d, 0x09); /* CKSYMTXCTRL */ - /* TX/CK LVL 10 */ - hdmi_phy_i2c_write(hdmi, 0x01ad, 0x0E); /* VLEVCTRL */ - /* REMOVE CLK TERM */ - hdmi_phy_i2c_write(hdmi, 0x8000, 0x05); /* CKCALCTRL */ - - imx_hdmi_phy_enable_power(hdmi, 1); - - /* toggle TMDS enable */ - imx_hdmi_phy_enable_tmds(hdmi, 0); - imx_hdmi_phy_enable_tmds(hdmi, 1); - - /* gen2 tx power on */ - imx_hdmi_phy_gen2_txpwron(hdmi, 1); - imx_hdmi_phy_gen2_pddq(hdmi, 0); - - /*Wait for PHY PLL lock */ - msec = 5; - do { - val = hdmi_readb(hdmi, HDMI_PHY_STAT0) & HDMI_PHY_TX_PHY_LOCK; - if (!val) - break; - - if (msec == 0) { - dev_err(hdmi->dev, "PHY PLL not locked\n"); - return -ETIMEDOUT; - } - - udelay(1000); - msec--; - } while (1); - - return 0; -} - -static int imx_hdmi_phy_init(struct imx_hdmi *hdmi) -{ - int i, ret; - bool cscon = false; - - /*check csc whether needed activated in HDMI mode */ - cscon = (is_color_space_conversion(hdmi) && - !hdmi->hdmi_data.video_mode.mdvi); - - /* HDMI Phy spec says to do the phy initialization sequence twice */ - for (i = 0; i < 2; i++) { - imx_hdmi_phy_sel_data_en_pol(hdmi, 1); - imx_hdmi_phy_sel_interface_control(hdmi, 0); - imx_hdmi_phy_enable_tmds(hdmi, 0); - imx_hdmi_phy_enable_power(hdmi, 0); - - /* Enable CSC */ - ret = hdmi_phy_configure(hdmi, 0, 8, cscon); - if (ret) - return ret; - } - - hdmi->phy_enabled = true; - return 0; -} - -static void hdmi_tx_hdcp_config(struct imx_hdmi *hdmi) -{ - u8 de; - - if (hdmi->hdmi_data.video_mode.mdataenablepolarity) - de = HDMI_A_VIDPOLCFG_DATAENPOL_ACTIVE_HIGH; - else - de = HDMI_A_VIDPOLCFG_DATAENPOL_ACTIVE_LOW; - - /* disable rx detect */ - hdmi_modb(hdmi, HDMI_A_HDCPCFG0_RXDETECT_DISABLE, - HDMI_A_HDCPCFG0_RXDETECT_MASK, HDMI_A_HDCPCFG0); - - hdmi_modb(hdmi, de, HDMI_A_VIDPOLCFG_DATAENPOL_MASK, HDMI_A_VIDPOLCFG); - - hdmi_modb(hdmi, HDMI_A_HDCPCFG1_ENCRYPTIONDISABLE_DISABLE, - HDMI_A_HDCPCFG1_ENCRYPTIONDISABLE_MASK, HDMI_A_HDCPCFG1); -} - -static void hdmi_config_AVI(struct imx_hdmi *hdmi) -{ - u8 val, pix_fmt, under_scan; - u8 act_ratio, coded_ratio, colorimetry, ext_colorimetry; - bool aspect_16_9; - - aspect_16_9 = false; /* FIXME */ - - /* AVI Data Byte 1 */ - if (hdmi->hdmi_data.enc_out_format == YCBCR444) - pix_fmt = HDMI_FC_AVICONF0_PIX_FMT_YCBCR444; - else if (hdmi->hdmi_data.enc_out_format == YCBCR422_8BITS) - pix_fmt = HDMI_FC_AVICONF0_PIX_FMT_YCBCR422; - else - pix_fmt = HDMI_FC_AVICONF0_PIX_FMT_RGB; - - under_scan = HDMI_FC_AVICONF0_SCAN_INFO_NODATA; - - /* - * Active format identification data is present in the AVI InfoFrame. - * Under scan info, no bar data - */ - val = pix_fmt | under_scan | - HDMI_FC_AVICONF0_ACTIVE_FMT_INFO_PRESENT | - HDMI_FC_AVICONF0_BAR_DATA_NO_DATA; - - hdmi_writeb(hdmi, val, HDMI_FC_AVICONF0); - - /* AVI Data Byte 2 -Set the Aspect Ratio */ - if (aspect_16_9) { - act_ratio = HDMI_FC_AVICONF1_ACTIVE_ASPECT_RATIO_16_9; - coded_ratio = HDMI_FC_AVICONF1_CODED_ASPECT_RATIO_16_9; - } else { - act_ratio = HDMI_FC_AVICONF1_ACTIVE_ASPECT_RATIO_4_3; - coded_ratio = HDMI_FC_AVICONF1_CODED_ASPECT_RATIO_4_3; - } - - /* Set up colorimetry */ - if (hdmi->hdmi_data.enc_out_format == XVYCC444) { - colorimetry = HDMI_FC_AVICONF1_COLORIMETRY_EXTENDED_INFO; - if (hdmi->hdmi_data.colorimetry == HDMI_COLORIMETRY_ITU_601) - ext_colorimetry = - HDMI_FC_AVICONF2_EXT_COLORIMETRY_XVYCC601; - else /*hdmi->hdmi_data.colorimetry == HDMI_COLORIMETRY_ITU_709*/ - ext_colorimetry = - HDMI_FC_AVICONF2_EXT_COLORIMETRY_XVYCC709; - } else if (hdmi->hdmi_data.enc_out_format != RGB) { - if (hdmi->hdmi_data.colorimetry == HDMI_COLORIMETRY_ITU_601) - colorimetry = HDMI_FC_AVICONF1_COLORIMETRY_SMPTE; - else /*hdmi->hdmi_data.colorimetry == HDMI_COLORIMETRY_ITU_709*/ - colorimetry = HDMI_FC_AVICONF1_COLORIMETRY_ITUR; - ext_colorimetry = HDMI_FC_AVICONF2_EXT_COLORIMETRY_XVYCC601; - } else { /* Carries no data */ - colorimetry = HDMI_FC_AVICONF1_COLORIMETRY_NO_DATA; - ext_colorimetry = HDMI_FC_AVICONF2_EXT_COLORIMETRY_XVYCC601; - } - - val = colorimetry | coded_ratio | act_ratio; - hdmi_writeb(hdmi, val, HDMI_FC_AVICONF1); - - /* AVI Data Byte 3 */ - val = HDMI_FC_AVICONF2_IT_CONTENT_NO_DATA | ext_colorimetry | - HDMI_FC_AVICONF2_RGB_QUANT_DEFAULT | - HDMI_FC_AVICONF2_SCALING_NONE; - hdmi_writeb(hdmi, val, HDMI_FC_AVICONF2); - - /* AVI Data Byte 4 */ - hdmi_writeb(hdmi, hdmi->vic, HDMI_FC_AVIVID); - - /* AVI Data Byte 5- set up input and output pixel repetition */ - val = (((hdmi->hdmi_data.video_mode.mpixelrepetitioninput + 1) << - HDMI_FC_PRCONF_INCOMING_PR_FACTOR_OFFSET) & - HDMI_FC_PRCONF_INCOMING_PR_FACTOR_MASK) | - ((hdmi->hdmi_data.video_mode.mpixelrepetitionoutput << - HDMI_FC_PRCONF_OUTPUT_PR_FACTOR_OFFSET) & - HDMI_FC_PRCONF_OUTPUT_PR_FACTOR_MASK); - hdmi_writeb(hdmi, val, HDMI_FC_PRCONF); - - /* IT Content and quantization range = don't care */ - val = HDMI_FC_AVICONF3_IT_CONTENT_TYPE_GRAPHICS | - HDMI_FC_AVICONF3_QUANT_RANGE_LIMITED; - hdmi_writeb(hdmi, val, HDMI_FC_AVICONF3); - - /* AVI Data Bytes 6-13 */ - hdmi_writeb(hdmi, 0, HDMI_FC_AVIETB0); - hdmi_writeb(hdmi, 0, HDMI_FC_AVIETB1); - hdmi_writeb(hdmi, 0, HDMI_FC_AVISBB0); - hdmi_writeb(hdmi, 0, HDMI_FC_AVISBB1); - hdmi_writeb(hdmi, 0, HDMI_FC_AVIELB0); - hdmi_writeb(hdmi, 0, HDMI_FC_AVIELB1); - hdmi_writeb(hdmi, 0, HDMI_FC_AVISRB0); - hdmi_writeb(hdmi, 0, HDMI_FC_AVISRB1); -} - -static void hdmi_av_composer(struct imx_hdmi *hdmi, - const struct drm_display_mode *mode) -{ - u8 inv_val; - struct hdmi_vmode *vmode = &hdmi->hdmi_data.video_mode; - int hblank, vblank, h_de_hs, v_de_vs, hsync_len, vsync_len; - - vmode->mhsyncpolarity = !!(mode->flags & DRM_MODE_FLAG_PHSYNC); - vmode->mvsyncpolarity = !!(mode->flags & DRM_MODE_FLAG_PVSYNC); - vmode->minterlaced = !!(mode->flags & DRM_MODE_FLAG_INTERLACE); - vmode->mpixelclock = mode->clock * 1000; - - dev_dbg(hdmi->dev, "final pixclk = %d\n", vmode->mpixelclock); - - /* Set up HDMI_FC_INVIDCONF */ - inv_val = (hdmi->hdmi_data.hdcp_enable ? - HDMI_FC_INVIDCONF_HDCP_KEEPOUT_ACTIVE : - HDMI_FC_INVIDCONF_HDCP_KEEPOUT_INACTIVE); - - inv_val |= (vmode->mvsyncpolarity ? - HDMI_FC_INVIDCONF_VSYNC_IN_POLARITY_ACTIVE_HIGH : - HDMI_FC_INVIDCONF_VSYNC_IN_POLARITY_ACTIVE_LOW); - - inv_val |= (vmode->mhsyncpolarity ? - HDMI_FC_INVIDCONF_HSYNC_IN_POLARITY_ACTIVE_HIGH : - HDMI_FC_INVIDCONF_HSYNC_IN_POLARITY_ACTIVE_LOW); - - inv_val |= (vmode->mdataenablepolarity ? - HDMI_FC_INVIDCONF_DE_IN_POLARITY_ACTIVE_HIGH : - HDMI_FC_INVIDCONF_DE_IN_POLARITY_ACTIVE_LOW); - - if (hdmi->vic == 39) - inv_val |= HDMI_FC_INVIDCONF_R_V_BLANK_IN_OSC_ACTIVE_HIGH; - else - inv_val |= (vmode->minterlaced ? - HDMI_FC_INVIDCONF_R_V_BLANK_IN_OSC_ACTIVE_HIGH : - HDMI_FC_INVIDCONF_R_V_BLANK_IN_OSC_ACTIVE_LOW); - - inv_val |= (vmode->minterlaced ? - HDMI_FC_INVIDCONF_IN_I_P_INTERLACED : - HDMI_FC_INVIDCONF_IN_I_P_PROGRESSIVE); - - inv_val |= (vmode->mdvi ? - HDMI_FC_INVIDCONF_DVI_MODEZ_DVI_MODE : - HDMI_FC_INVIDCONF_DVI_MODEZ_HDMI_MODE); - - hdmi_writeb(hdmi, inv_val, HDMI_FC_INVIDCONF); - - /* Set up horizontal active pixel width */ - hdmi_writeb(hdmi, mode->hdisplay >> 8, HDMI_FC_INHACTV1); - hdmi_writeb(hdmi, mode->hdisplay, HDMI_FC_INHACTV0); - - /* Set up vertical active lines */ - hdmi_writeb(hdmi, mode->vdisplay >> 8, HDMI_FC_INVACTV1); - hdmi_writeb(hdmi, mode->vdisplay, HDMI_FC_INVACTV0); - - /* Set up horizontal blanking pixel region width */ - hblank = mode->htotal - mode->hdisplay; - hdmi_writeb(hdmi, hblank >> 8, HDMI_FC_INHBLANK1); - hdmi_writeb(hdmi, hblank, HDMI_FC_INHBLANK0); - - /* Set up vertical blanking pixel region width */ - vblank = mode->vtotal - mode->vdisplay; - hdmi_writeb(hdmi, vblank, HDMI_FC_INVBLANK); - - /* Set up HSYNC active edge delay width (in pixel clks) */ - h_de_hs = mode->hsync_start - mode->hdisplay; - hdmi_writeb(hdmi, h_de_hs >> 8, HDMI_FC_HSYNCINDELAY1); - hdmi_writeb(hdmi, h_de_hs, HDMI_FC_HSYNCINDELAY0); - - /* Set up VSYNC active edge delay (in lines) */ - v_de_vs = mode->vsync_start - mode->vdisplay; - hdmi_writeb(hdmi, v_de_vs, HDMI_FC_VSYNCINDELAY); - - /* Set up HSYNC active pulse width (in pixel clks) */ - hsync_len = mode->hsync_end - mode->hsync_start; - hdmi_writeb(hdmi, hsync_len >> 8, HDMI_FC_HSYNCINWIDTH1); - hdmi_writeb(hdmi, hsync_len, HDMI_FC_HSYNCINWIDTH0); - - /* Set up VSYNC active edge delay (in lines) */ - vsync_len = mode->vsync_end - mode->vsync_start; - hdmi_writeb(hdmi, vsync_len, HDMI_FC_VSYNCINWIDTH); -} - -static void imx_hdmi_phy_disable(struct imx_hdmi *hdmi) -{ - if (!hdmi->phy_enabled) - return; - - imx_hdmi_phy_enable_tmds(hdmi, 0); - imx_hdmi_phy_enable_power(hdmi, 0); - - hdmi->phy_enabled = false; -} - -/* HDMI Initialization Step B.4 */ -static void imx_hdmi_enable_video_path(struct imx_hdmi *hdmi) -{ - u8 clkdis; - - /* control period minimum duration */ - hdmi_writeb(hdmi, 12, HDMI_FC_CTRLDUR); - hdmi_writeb(hdmi, 32, HDMI_FC_EXCTRLDUR); - hdmi_writeb(hdmi, 1, HDMI_FC_EXCTRLSPAC); - - /* Set to fill TMDS data channels */ - hdmi_writeb(hdmi, 0x0B, HDMI_FC_CH0PREAM); - hdmi_writeb(hdmi, 0x16, HDMI_FC_CH1PREAM); - hdmi_writeb(hdmi, 0x21, HDMI_FC_CH2PREAM); - - /* Enable pixel clock and tmds data path */ - clkdis = 0x7F; - clkdis &= ~HDMI_MC_CLKDIS_PIXELCLK_DISABLE; - hdmi_writeb(hdmi, clkdis, HDMI_MC_CLKDIS); - - clkdis &= ~HDMI_MC_CLKDIS_TMDSCLK_DISABLE; - hdmi_writeb(hdmi, clkdis, HDMI_MC_CLKDIS); - - /* Enable csc path */ - if (is_color_space_conversion(hdmi)) { - clkdis &= ~HDMI_MC_CLKDIS_CSCCLK_DISABLE; - hdmi_writeb(hdmi, clkdis, HDMI_MC_CLKDIS); - } -} - -static void hdmi_enable_audio_clk(struct imx_hdmi *hdmi) -{ - hdmi_modb(hdmi, 0, HDMI_MC_CLKDIS_AUDCLK_DISABLE, HDMI_MC_CLKDIS); -} - -/* Workaround to clear the overflow condition */ -static void imx_hdmi_clear_overflow(struct imx_hdmi *hdmi) -{ - int count; - u8 val; - - /* TMDS software reset */ - hdmi_writeb(hdmi, (u8)~HDMI_MC_SWRSTZ_TMDSSWRST_REQ, HDMI_MC_SWRSTZ); - - val = hdmi_readb(hdmi, HDMI_FC_INVIDCONF); - if (hdmi->dev_type == IMX6DL_HDMI) { - hdmi_writeb(hdmi, val, HDMI_FC_INVIDCONF); - return; - } - - for (count = 0; count < 4; count++) - hdmi_writeb(hdmi, val, HDMI_FC_INVIDCONF); -} - -static void hdmi_enable_overflow_interrupts(struct imx_hdmi *hdmi) -{ - hdmi_writeb(hdmi, 0, HDMI_FC_MASK2); - hdmi_writeb(hdmi, 0, HDMI_IH_MUTE_FC_STAT2); -} - -static void hdmi_disable_overflow_interrupts(struct imx_hdmi *hdmi) -{ - hdmi_writeb(hdmi, HDMI_IH_MUTE_FC_STAT2_OVERFLOW_MASK, - HDMI_IH_MUTE_FC_STAT2); -} - -static int imx_hdmi_setup(struct imx_hdmi *hdmi, struct drm_display_mode *mode) -{ - int ret; - - hdmi_disable_overflow_interrupts(hdmi); - - hdmi->vic = drm_match_cea_mode(mode); - - if (!hdmi->vic) { - dev_dbg(hdmi->dev, "Non-CEA mode used in HDMI\n"); - hdmi->hdmi_data.video_mode.mdvi = true; - } else { - dev_dbg(hdmi->dev, "CEA mode used vic=%d\n", hdmi->vic); - hdmi->hdmi_data.video_mode.mdvi = false; - } - - if ((hdmi->vic == 6) || (hdmi->vic == 7) || - (hdmi->vic == 21) || (hdmi->vic == 22) || - (hdmi->vic == 2) || (hdmi->vic == 3) || - (hdmi->vic == 17) || (hdmi->vic == 18)) - hdmi->hdmi_data.colorimetry = HDMI_COLORIMETRY_ITU_601; - else - hdmi->hdmi_data.colorimetry = HDMI_COLORIMETRY_ITU_709; - - if ((hdmi->vic == 10) || (hdmi->vic == 11) || - (hdmi->vic == 12) || (hdmi->vic == 13) || - (hdmi->vic == 14) || (hdmi->vic == 15) || - (hdmi->vic == 25) || (hdmi->vic == 26) || - (hdmi->vic == 27) || (hdmi->vic == 28) || - (hdmi->vic == 29) || (hdmi->vic == 30) || - (hdmi->vic == 35) || (hdmi->vic == 36) || - (hdmi->vic == 37) || (hdmi->vic == 38)) - hdmi->hdmi_data.video_mode.mpixelrepetitionoutput = 1; - else - hdmi->hdmi_data.video_mode.mpixelrepetitionoutput = 0; - - hdmi->hdmi_data.video_mode.mpixelrepetitioninput = 0; - - /* TODO: Get input format from IPU (via FB driver interface) */ - hdmi->hdmi_data.enc_in_format = RGB; - - hdmi->hdmi_data.enc_out_format = RGB; - - hdmi->hdmi_data.enc_color_depth = 8; - hdmi->hdmi_data.pix_repet_factor = 0; - hdmi->hdmi_data.hdcp_enable = 0; - hdmi->hdmi_data.video_mode.mdataenablepolarity = true; - - /* HDMI Initialization Step B.1 */ - hdmi_av_composer(hdmi, mode); - - /* HDMI Initializateion Step B.2 */ - ret = imx_hdmi_phy_init(hdmi); - if (ret) - return ret; - - /* HDMI Initialization Step B.3 */ - imx_hdmi_enable_video_path(hdmi); - - /* not for DVI mode */ - if (hdmi->hdmi_data.video_mode.mdvi) - dev_dbg(hdmi->dev, "%s DVI mode\n", __func__); - else { - dev_dbg(hdmi->dev, "%s CEA mode\n", __func__); - - /* HDMI Initialization Step E - Configure audio */ - hdmi_clk_regenerator_update_pixel_clock(hdmi); - hdmi_enable_audio_clk(hdmi); - - /* HDMI Initialization Step F - Configure AVI InfoFrame */ - hdmi_config_AVI(hdmi); - } - - hdmi_video_packetize(hdmi); - hdmi_video_csc(hdmi); - hdmi_video_sample(hdmi); - hdmi_tx_hdcp_config(hdmi); - - imx_hdmi_clear_overflow(hdmi); - if (hdmi->cable_plugin && !hdmi->hdmi_data.video_mode.mdvi) - hdmi_enable_overflow_interrupts(hdmi); - - return 0; -} - -/* Wait until we are registered to enable interrupts */ -static int imx_hdmi_fb_registered(struct imx_hdmi *hdmi) -{ - hdmi_writeb(hdmi, HDMI_PHY_I2CM_INT_ADDR_DONE_POL, - HDMI_PHY_I2CM_INT_ADDR); - - hdmi_writeb(hdmi, HDMI_PHY_I2CM_CTLINT_ADDR_NAC_POL | - HDMI_PHY_I2CM_CTLINT_ADDR_ARBITRATION_POL, - HDMI_PHY_I2CM_CTLINT_ADDR); - - /* enable cable hot plug irq */ - hdmi_writeb(hdmi, (u8)~HDMI_PHY_HPD, HDMI_PHY_MASK0); - - /* Clear Hotplug interrupts */ - hdmi_writeb(hdmi, HDMI_IH_PHY_STAT0_HPD, HDMI_IH_PHY_STAT0); - - return 0; -} - -static void initialize_hdmi_ih_mutes(struct imx_hdmi *hdmi) -{ - u8 ih_mute; - - /* - * Boot up defaults are: - * HDMI_IH_MUTE = 0x03 (disabled) - * HDMI_IH_MUTE_* = 0x00 (enabled) - * - * Disable top level interrupt bits in HDMI block - */ - ih_mute = hdmi_readb(hdmi, HDMI_IH_MUTE) | - HDMI_IH_MUTE_MUTE_WAKEUP_INTERRUPT | - HDMI_IH_MUTE_MUTE_ALL_INTERRUPT; - - hdmi_writeb(hdmi, ih_mute, HDMI_IH_MUTE); - - /* by default mask all interrupts */ - hdmi_writeb(hdmi, 0xff, HDMI_VP_MASK); - hdmi_writeb(hdmi, 0xff, HDMI_FC_MASK0); - hdmi_writeb(hdmi, 0xff, HDMI_FC_MASK1); - hdmi_writeb(hdmi, 0xff, HDMI_FC_MASK2); - hdmi_writeb(hdmi, 0xff, HDMI_PHY_MASK0); - hdmi_writeb(hdmi, 0xff, HDMI_PHY_I2CM_INT_ADDR); - hdmi_writeb(hdmi, 0xff, HDMI_PHY_I2CM_CTLINT_ADDR); - hdmi_writeb(hdmi, 0xff, HDMI_AUD_INT); - hdmi_writeb(hdmi, 0xff, HDMI_AUD_SPDIFINT); - hdmi_writeb(hdmi, 0xff, HDMI_AUD_HBR_MASK); - hdmi_writeb(hdmi, 0xff, HDMI_GP_MASK); - hdmi_writeb(hdmi, 0xff, HDMI_A_APIINTMSK); - hdmi_writeb(hdmi, 0xff, HDMI_CEC_MASK); - hdmi_writeb(hdmi, 0xff, HDMI_I2CM_INT); - hdmi_writeb(hdmi, 0xff, HDMI_I2CM_CTLINT); - - /* Disable interrupts in the IH_MUTE_* registers */ - hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_FC_STAT0); - hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_FC_STAT1); - hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_FC_STAT2); - hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_AS_STAT0); - hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_PHY_STAT0); - hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_I2CM_STAT0); - hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_CEC_STAT0); - hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_VP_STAT0); - hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_I2CMPHY_STAT0); - hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_AHBDMAAUD_STAT0); - - /* Enable top level interrupt bits in HDMI block */ - ih_mute &= ~(HDMI_IH_MUTE_MUTE_WAKEUP_INTERRUPT | - HDMI_IH_MUTE_MUTE_ALL_INTERRUPT); - hdmi_writeb(hdmi, ih_mute, HDMI_IH_MUTE); -} - -static void imx_hdmi_poweron(struct imx_hdmi *hdmi) -{ - imx_hdmi_setup(hdmi, &hdmi->previous_mode); -} - -static void imx_hdmi_poweroff(struct imx_hdmi *hdmi) -{ - imx_hdmi_phy_disable(hdmi); -} - -static enum drm_connector_status imx_hdmi_connector_detect(struct drm_connector - *connector, bool force) -{ - struct imx_hdmi *hdmi = container_of(connector, struct imx_hdmi, - connector); - - return hdmi_readb(hdmi, HDMI_PHY_STAT0) & HDMI_PHY_HPD ? - connector_status_connected : connector_status_disconnected; -} - -static int imx_hdmi_connector_get_modes(struct drm_connector *connector) -{ - struct imx_hdmi *hdmi = container_of(connector, struct imx_hdmi, - connector); - struct edid *edid; - int ret; - - if (!hdmi->ddc) - return 0; - - edid = drm_get_edid(connector, hdmi->ddc); - if (edid) { - dev_dbg(hdmi->dev, "got edid: width[%d] x height[%d]\n", - edid->width_cm, edid->height_cm); - - drm_mode_connector_update_edid_property(connector, edid); - ret = drm_add_edid_modes(connector, edid); - kfree(edid); - } else { - dev_dbg(hdmi->dev, "failed to get edid\n"); - } - - return 0; -} - -static struct drm_encoder *imx_hdmi_connector_best_encoder(struct drm_connector - *connector) -{ - struct imx_hdmi *hdmi = container_of(connector, struct imx_hdmi, - connector); - - return &hdmi->encoder; -} - -static void imx_hdmi_encoder_mode_set(struct drm_encoder *encoder, - struct drm_display_mode *mode, - struct drm_display_mode *adjusted_mode) -{ - struct imx_hdmi *hdmi = container_of(encoder, struct imx_hdmi, encoder); - - imx_hdmi_setup(hdmi, mode); - - /* Store the display mode for plugin/DKMS poweron events */ - memcpy(&hdmi->previous_mode, mode, sizeof(hdmi->previous_mode)); -} - -static bool imx_hdmi_encoder_mode_fixup(struct drm_encoder *encoder, - const struct drm_display_mode *mode, - struct drm_display_mode *adjusted_mode) -{ - return true; -} - -static void imx_hdmi_encoder_disable(struct drm_encoder *encoder) -{ -} - -static void imx_hdmi_encoder_dpms(struct drm_encoder *encoder, int mode) -{ - struct imx_hdmi *hdmi = container_of(encoder, struct imx_hdmi, encoder); - - if (mode) - imx_hdmi_poweroff(hdmi); - else - imx_hdmi_poweron(hdmi); -} - -static void imx_hdmi_encoder_prepare(struct drm_encoder *encoder) -{ - struct imx_hdmi *hdmi = container_of(encoder, struct imx_hdmi, encoder); - - imx_hdmi_poweroff(hdmi); - imx_drm_panel_format(encoder, V4L2_PIX_FMT_RGB24); -} - -static void imx_hdmi_encoder_commit(struct drm_encoder *encoder) -{ - struct imx_hdmi *hdmi = container_of(encoder, struct imx_hdmi, encoder); - int mux = imx_drm_encoder_get_mux_id(hdmi->dev->of_node, encoder); - - imx_hdmi_set_ipu_di_mux(hdmi, mux); - - imx_hdmi_poweron(hdmi); -} - -static struct drm_encoder_funcs imx_hdmi_encoder_funcs = { - .destroy = imx_drm_encoder_destroy, -}; - -static struct drm_encoder_helper_funcs imx_hdmi_encoder_helper_funcs = { - .dpms = imx_hdmi_encoder_dpms, - .prepare = imx_hdmi_encoder_prepare, - .commit = imx_hdmi_encoder_commit, - .mode_set = imx_hdmi_encoder_mode_set, - .mode_fixup = imx_hdmi_encoder_mode_fixup, - .disable = imx_hdmi_encoder_disable, -}; - -static struct drm_connector_funcs imx_hdmi_connector_funcs = { - .dpms = drm_helper_connector_dpms, - .fill_modes = drm_helper_probe_single_connector_modes, - .detect = imx_hdmi_connector_detect, - .destroy = imx_drm_connector_destroy, -}; - -static struct drm_connector_helper_funcs imx_hdmi_connector_helper_funcs = { - .get_modes = imx_hdmi_connector_get_modes, - .best_encoder = imx_hdmi_connector_best_encoder, -}; - -static irqreturn_t imx_hdmi_hardirq(int irq, void *dev_id) -{ - struct imx_hdmi *hdmi = dev_id; - u8 intr_stat; - - intr_stat = hdmi_readb(hdmi, HDMI_IH_PHY_STAT0); - if (intr_stat) - hdmi_writeb(hdmi, ~0, HDMI_IH_MUTE_PHY_STAT0); - - return intr_stat ? IRQ_WAKE_THREAD : IRQ_NONE; -} - -static irqreturn_t imx_hdmi_irq(int irq, void *dev_id) -{ - struct imx_hdmi *hdmi = dev_id; - u8 intr_stat; - u8 phy_int_pol; - - intr_stat = hdmi_readb(hdmi, HDMI_IH_PHY_STAT0); - - phy_int_pol = hdmi_readb(hdmi, HDMI_PHY_POL0); - - if (intr_stat & HDMI_IH_PHY_STAT0_HPD) { - if (phy_int_pol & HDMI_PHY_HPD) { - dev_dbg(hdmi->dev, "EVENT=plugin\n"); - - hdmi_modb(hdmi, 0, HDMI_PHY_HPD, HDMI_PHY_POL0); - - imx_hdmi_poweron(hdmi); - } else { - dev_dbg(hdmi->dev, "EVENT=plugout\n"); - - hdmi_modb(hdmi, HDMI_PHY_HPD, HDMI_PHY_HPD, - HDMI_PHY_POL0); - - imx_hdmi_poweroff(hdmi); - } - drm_helper_hpd_irq_event(hdmi->connector.dev); - } - - hdmi_writeb(hdmi, intr_stat, HDMI_IH_PHY_STAT0); - hdmi_writeb(hdmi, ~HDMI_IH_PHY_STAT0_HPD, HDMI_IH_MUTE_PHY_STAT0); - - return IRQ_HANDLED; -} - -static int imx_hdmi_register(struct drm_device *drm, struct imx_hdmi *hdmi) -{ - int ret; - - ret = imx_drm_encoder_parse_of(drm, &hdmi->encoder, - hdmi->dev->of_node); - if (ret) - return ret; - - hdmi->connector.polled = DRM_CONNECTOR_POLL_HPD; - - drm_encoder_helper_add(&hdmi->encoder, &imx_hdmi_encoder_helper_funcs); - drm_encoder_init(drm, &hdmi->encoder, &imx_hdmi_encoder_funcs, - DRM_MODE_ENCODER_TMDS); - - drm_connector_helper_add(&hdmi->connector, - &imx_hdmi_connector_helper_funcs); - drm_connector_init(drm, &hdmi->connector, &imx_hdmi_connector_funcs, - DRM_MODE_CONNECTOR_HDMIA); - - hdmi->connector.encoder = &hdmi->encoder; - - drm_mode_connector_attach_encoder(&hdmi->connector, &hdmi->encoder); - - return 0; -} - -static struct platform_device_id imx_hdmi_devtype[] = { - { - .name = "imx6q-hdmi", - .driver_data = IMX6Q_HDMI, - }, { - .name = "imx6dl-hdmi", - .driver_data = IMX6DL_HDMI, - }, { /* sentinel */ } -}; -MODULE_DEVICE_TABLE(platform, imx_hdmi_devtype); - -static const struct of_device_id imx_hdmi_dt_ids[] = { -{ .compatible = "fsl,imx6q-hdmi", .data = &imx_hdmi_devtype[IMX6Q_HDMI], }, -{ .compatible = "fsl,imx6dl-hdmi", .data = &imx_hdmi_devtype[IMX6DL_HDMI], }, -{ /* sentinel */ } -}; -MODULE_DEVICE_TABLE(of, imx_hdmi_dt_ids); - -static int imx_hdmi_bind(struct device *dev, struct device *master, void *data) -{ - struct platform_device *pdev = to_platform_device(dev); - const struct of_device_id *of_id = - of_match_device(imx_hdmi_dt_ids, dev); - struct drm_device *drm = data; - struct device_node *np = dev->of_node; - struct device_node *ddc_node; - struct imx_hdmi *hdmi; - struct resource *iores; - int ret, irq; - - hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL); - if (!hdmi) - return -ENOMEM; - - hdmi->dev = dev; - hdmi->sample_rate = 48000; - hdmi->ratio = 100; - - if (of_id) { - const struct platform_device_id *device_id = of_id->data; - - hdmi->dev_type = device_id->driver_data; - } - - ddc_node = of_parse_phandle(np, "ddc-i2c-bus", 0); - if (ddc_node) { - hdmi->ddc = of_find_i2c_adapter_by_node(ddc_node); - if (!hdmi->ddc) - dev_dbg(hdmi->dev, "failed to read ddc node\n"); - - of_node_put(ddc_node); - } else { - dev_dbg(hdmi->dev, "no ddc property found\n"); - } - - irq = platform_get_irq(pdev, 0); - if (irq < 0) - return irq; - - ret = devm_request_threaded_irq(dev, irq, imx_hdmi_hardirq, - imx_hdmi_irq, IRQF_SHARED, - dev_name(dev), hdmi); - if (ret) - return ret; - - iores = platform_get_resource(pdev, IORESOURCE_MEM, 0); - hdmi->regs = devm_ioremap_resource(dev, iores); - if (IS_ERR(hdmi->regs)) - return PTR_ERR(hdmi->regs); - - hdmi->regmap = syscon_regmap_lookup_by_phandle(np, "gpr"); - if (IS_ERR(hdmi->regmap)) - return PTR_ERR(hdmi->regmap); - - hdmi->isfr_clk = devm_clk_get(hdmi->dev, "isfr"); - if (IS_ERR(hdmi->isfr_clk)) { - ret = PTR_ERR(hdmi->isfr_clk); - dev_err(hdmi->dev, - "Unable to get HDMI isfr clk: %d\n", ret); - return ret; - } - - ret = clk_prepare_enable(hdmi->isfr_clk); - if (ret) { - dev_err(hdmi->dev, - "Cannot enable HDMI isfr clock: %d\n", ret); - return ret; - } - - hdmi->iahb_clk = devm_clk_get(hdmi->dev, "iahb"); - if (IS_ERR(hdmi->iahb_clk)) { - ret = PTR_ERR(hdmi->iahb_clk); - dev_err(hdmi->dev, - "Unable to get HDMI iahb clk: %d\n", ret); - goto err_isfr; - } - - ret = clk_prepare_enable(hdmi->iahb_clk); - if (ret) { - dev_err(hdmi->dev, - "Cannot enable HDMI iahb clock: %d\n", ret); - goto err_isfr; - } - - /* Product and revision IDs */ - dev_info(dev, - "Detected HDMI controller 0x%x:0x%x:0x%x:0x%x\n", - hdmi_readb(hdmi, HDMI_DESIGN_ID), - hdmi_readb(hdmi, HDMI_REVISION_ID), - hdmi_readb(hdmi, HDMI_PRODUCT_ID0), - hdmi_readb(hdmi, HDMI_PRODUCT_ID1)); - - initialize_hdmi_ih_mutes(hdmi); - - /* - * To prevent overflows in HDMI_IH_FC_STAT2, set the clk regenerator - * N and cts values before enabling phy - */ - hdmi_init_clk_regenerator(hdmi); - - /* - * Configure registers related to HDMI interrupt - * generation before registering IRQ. - */ - hdmi_writeb(hdmi, HDMI_PHY_HPD, HDMI_PHY_POL0); - - /* Clear Hotplug interrupts */ - hdmi_writeb(hdmi, HDMI_IH_PHY_STAT0_HPD, HDMI_IH_PHY_STAT0); - - ret = imx_hdmi_fb_registered(hdmi); - if (ret) - goto err_iahb; - - ret = imx_hdmi_register(drm, hdmi); - if (ret) - goto err_iahb; - - /* Unmute interrupts */ - hdmi_writeb(hdmi, ~HDMI_IH_PHY_STAT0_HPD, HDMI_IH_MUTE_PHY_STAT0); - - dev_set_drvdata(dev, hdmi); - - return 0; - -err_iahb: - clk_disable_unprepare(hdmi->iahb_clk); -err_isfr: - clk_disable_unprepare(hdmi->isfr_clk); - - return ret; -} - -static void imx_hdmi_unbind(struct device *dev, struct device *master, - void *data) -{ - struct imx_hdmi *hdmi = dev_get_drvdata(dev); - - /* Disable all interrupts */ - hdmi_writeb(hdmi, ~0, HDMI_IH_MUTE_PHY_STAT0); - - hdmi->connector.funcs->destroy(&hdmi->connector); - hdmi->encoder.funcs->destroy(&hdmi->encoder); - - clk_disable_unprepare(hdmi->iahb_clk); - clk_disable_unprepare(hdmi->isfr_clk); - i2c_put_adapter(hdmi->ddc); -} - -static const struct component_ops hdmi_ops = { - .bind = imx_hdmi_bind, - .unbind = imx_hdmi_unbind, -}; - -static int imx_hdmi_platform_probe(struct platform_device *pdev) -{ - return component_add(&pdev->dev, &hdmi_ops); -} - -static int imx_hdmi_platform_remove(struct platform_device *pdev) -{ - component_del(&pdev->dev, &hdmi_ops); - return 0; -} - -static struct platform_driver imx_hdmi_driver = { - .probe = imx_hdmi_platform_probe, - .remove = imx_hdmi_platform_remove, - .driver = { - .name = "imx-hdmi", - .of_match_table = imx_hdmi_dt_ids, - }, -}; - -module_platform_driver(imx_hdmi_driver); - -MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>"); -MODULE_DESCRIPTION("i.MX6 HDMI transmitter driver"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:imx-hdmi"); |