diff options
| -rw-r--r-- | arch/arm/include/asm/arch-exynos/dp.h | 751 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-exynos/dp_info.h | 214 | ||||
| -rw-r--r-- | drivers/video/Makefile | 1 | ||||
| -rw-r--r-- | drivers/video/exynos_dp.c | 925 | ||||
| -rw-r--r-- | drivers/video/exynos_dp_lowlevel.c | 1291 | ||||
| -rw-r--r-- | drivers/video/exynos_dp_lowlevel.h | 80 |
6 files changed, 3262 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-exynos/dp.h b/arch/arm/include/asm/arch-exynos/dp.h new file mode 100644 index 0000000000..69c65f7a76 --- /dev/null +++ b/arch/arm/include/asm/arch-exynos/dp.h @@ -0,0 +1,751 @@ +/* + * Copyright (C) 2012 Samsung Electronics + * + * Author: Donghwa Lee <dh09.lee@samsung.com> + * + * 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. + * + * 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, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#ifndef __ASM_ARM_ARCH_DP_H_ +#define __ASM_ARM_ARCH_DP_H_ + +#ifndef __ASSEMBLY__ + +struct exynos_dp { + unsigned char res1[0x10]; + unsigned int tx_version; + unsigned int tx_sw_reset; + unsigned int func_en1; + unsigned int func_en2; + unsigned int video_ctl1; + unsigned int video_ctl2; + unsigned int video_ctl3; + unsigned int video_ctl4; + unsigned int color_blue_cb; + unsigned int color_green_y; + unsigned int color_red_cr; + unsigned int video_ctl8; + unsigned char res2[0x4]; + unsigned int video_ctl10; + unsigned int total_ln_cfg_l; + unsigned int total_ln_cfg_h; + unsigned int active_ln_cfg_l; + unsigned int active_ln_cfg_h; + unsigned int vfp_cfg; + unsigned int vsw_cfg; + unsigned int vbp_cfg; + unsigned int total_pix_cfg_l; + unsigned int total_pix_cfg_h; + unsigned int active_pix_cfg_l; + unsigned int active_pix_cfg_h; + unsigned int hfp_cfg_l; + unsigned int hfp_cfg_h; + unsigned int hsw_cfg_l; + unsigned int hsw_cfg_h; + unsigned int hbp_cfg_l; + unsigned int hbp_cfg_h; + unsigned int video_status; + unsigned int total_ln_sta_l; + unsigned int total_ln_sta_h; + unsigned int active_ln_sta_l; + unsigned int active_ln_sta_h; + + unsigned int vfp_sta; + unsigned int vsw_sta; + unsigned int vbp_sta; + + unsigned int total_pix_sta_l; + unsigned int total_pix_sta_h; + unsigned int active_pix_sta_l; + unsigned int active_pix_sta_h; + + unsigned int hfp_sta_l; + unsigned int hfp_sta_h; + unsigned int hsw_sta_l; + unsigned int hsw_sta_h; + unsigned int hbp_sta_l; + unsigned int hbp_sta_h; + + unsigned char res3[0x288]; + + unsigned int lane_map; + unsigned char res4[0x10]; + unsigned int analog_ctl1; + unsigned int analog_ctl2; + unsigned int analog_ctl3; + + unsigned int pll_filter_ctl1; + unsigned int amp_tuning_ctl; + unsigned char res5[0xc]; + + unsigned int aux_hw_retry_ctl; + unsigned char res6[0x2c]; + unsigned int int_state; + unsigned int common_int_sta1; + unsigned int common_int_sta2; + unsigned int common_int_sta3; + unsigned int common_int_sta4; + unsigned char res7[0x8]; + + unsigned int int_sta; + unsigned char res8[0x1c]; + unsigned int int_ctl; + unsigned char res9[0x200]; + unsigned int sys_ctl1; + unsigned int sys_ctl2; + unsigned int sys_ctl3; + unsigned int sys_ctl4; + unsigned int vid_ctl; + unsigned char res10[0x2c]; + unsigned int pkt_send_ctl; + unsigned char res[0x4]; + unsigned int hdcp_ctl; + unsigned char res11[0x34]; + unsigned int link_bw_set; + + unsigned int lane_count_set; + unsigned int training_ptn_set; + unsigned int ln0_link_training_ctl; + unsigned int ln1_link_training_ctl; + unsigned int ln2_link_training_ctl; + unsigned int ln3_link_training_ctl; + unsigned int dn_spread_ctl; + unsigned int hw_link_training_ctl; + unsigned char res12[0x1c]; + + unsigned int debug_ctl; + unsigned int hpd_deglitch_l; + unsigned int hpd_deglitch_h; + + unsigned char res13[0x14]; + unsigned int link_debug_ctl; + + unsigned char res14[0x1c]; + + unsigned int m_vid0; + unsigned int m_vid1; + unsigned int m_vid2; + unsigned int n_vid0; + unsigned int n_vid1; + unsigned int n_vid2; + unsigned int m_vid_mon; + unsigned int pll_ctl; + unsigned int phy_pd; + unsigned int phy_test; + unsigned char res15[0x8]; + + unsigned int video_fifo_thrd; + unsigned char res16[0x8]; + unsigned int audio_margin; + + unsigned int dn_spread_ctl1; + unsigned int dn_spread_ctl2; + unsigned char res17[0x18]; + unsigned int m_cal_ctl; + unsigned int m_vid_gen_filter_th; + unsigned char res18[0x10]; + unsigned int m_aud_gen_filter_th; + unsigned char res50[0x4]; + + unsigned int aux_ch_sta; + unsigned int aux_err_num; + unsigned int aux_ch_defer_ctl; + unsigned int aux_rx_comm; + unsigned int buffer_data_ctl; + + unsigned int aux_ch_ctl1; + unsigned int aux_addr_7_0; + unsigned int aux_addr_15_8; + unsigned int aux_addr_19_16; + unsigned int aux_ch_ctl2; + unsigned char res19[0x18]; + unsigned int buf_data0; + unsigned char res20[0x3c]; + + unsigned int soc_general_ctl; + unsigned char res21[0x8c]; + unsigned int crc_con; + unsigned int crc_result; + unsigned char res22[0x8]; + + unsigned int common_int_mask1; + unsigned int common_int_mask2; + unsigned int common_int_mask3; + unsigned int common_int_mask4; + unsigned int int_sta_mask1; + unsigned int int_sta_mask2; + unsigned int int_sta_mask3; + unsigned int int_sta_mask4; + unsigned int int_sta_mask; + unsigned int crc_result2; + unsigned int scrambler_reset_cnt; + + unsigned int pn_inv; + unsigned int psr_config; + unsigned int psr_command0; + unsigned int psr_command1; + unsigned int psr_crc_mon0; + unsigned int psr_crc_mon1; + + unsigned char res24[0x30]; + unsigned int phy_bist_ctrl; + unsigned char res25[0xc]; + unsigned int phy_ctrl; + unsigned char res26[0x1c]; + unsigned int test_pattern_gen_en; + unsigned int test_pattern_gen_ctrl; +}; + +#endif /* __ASSEMBLY__ */ + +/* For DP VIDEO CTL 1 */ +#define VIDEO_EN_MASK (0x01 << 7) +#define VIDEO_MUTE_MASK (0x01 << 6) + +/* For DP VIDEO CTL 4 */ +#define VIDEO_BIST_MASK (0x1 << 3) + +/* EXYNOS_DP_ANALOG_CTL_1 */ +#define SEL_BG_NEW_BANDGAP (0x0 << 6) +#define SEL_BG_INTERNAL_RESISTOR (0x1 << 6) +#define TX_TERMINAL_CTRL_73_OHM (0x0 << 4) +#define TX_TERMINAL_CTRL_61_OHM (0x1 << 4) +#define TX_TERMINAL_CTRL_50_OHM (0x2 << 4) +#define TX_TERMINAL_CTRL_45_OHM (0x3 << 4) +#define SWING_A_30PER_G_INCREASE (0x1 << 3) +#define SWING_A_30PER_G_NORMAL (0x0 << 3) + +/* EXYNOS_DP_ANALOG_CTL_2 */ +#define CPREG_BLEED (0x1 << 4) +#define SEL_24M (0x1 << 3) +#define TX_DVDD_BIT_1_0000V (0x3 << 0) +#define TX_DVDD_BIT_1_0625V (0x4 << 0) +#define TX_DVDD_BIT_1_1250V (0x5 << 0) + +/* EXYNOS_DP_ANALOG_CTL_3 */ +#define DRIVE_DVDD_BIT_1_0000V (0x3 << 5) +#define DRIVE_DVDD_BIT_1_0625V (0x4 << 5) +#define DRIVE_DVDD_BIT_1_1250V (0x5 << 5) +#define SEL_CURRENT_DEFAULT (0x0 << 3) +#define VCO_BIT_000_MICRO (0x0 << 0) +#define VCO_BIT_200_MICRO (0x1 << 0) +#define VCO_BIT_300_MICRO (0x2 << 0) +#define VCO_BIT_400_MICRO (0x3 << 0) +#define VCO_BIT_500_MICRO (0x4 << 0) +#define VCO_BIT_600_MICRO (0x5 << 0) +#define VCO_BIT_700_MICRO (0x6 << 0) +#define VCO_BIT_900_MICRO (0x7 << 0) + +/* EXYNOS_DP_PLL_FILTER_CTL_1 */ +#define PD_RING_OSC (0x1 << 6) +#define AUX_TERMINAL_CTRL_52_OHM (0x3 << 4) +#define AUX_TERMINAL_CTRL_69_OHM (0x2 << 4) +#define AUX_TERMINAL_CTRL_102_OHM (0x1 << 4) +#define AUX_TERMINAL_CTRL_200_OHM (0x0 << 4) +#define TX_CUR1_1X (0x0 << 2) +#define TX_CUR1_2X (0x1 << 2) +#define TX_CUR1_3X (0x2 << 2) +#define TX_CUR_1_MA (0x0 << 0) +#define TX_CUR_2_MA (0x1 << 0) +#define TX_CUR_3_MA (0x2 << 0) +#define TX_CUR_4_MA (0x3 << 0) + +/* EXYNOS_DP_PLL_FILTER_CTL_2 */ +#define CH3_AMP_0_MV (0x3 << 12) +#define CH2_AMP_0_MV (0x3 << 8) +#define CH1_AMP_0_MV (0x3 << 4) +#define CH0_AMP_0_MV (0x3 << 0) + +/* EXYNOS_DP_PLL_CTL */ +#define DP_PLL_PD (0x1 << 7) +#define DP_PLL_RESET (0x1 << 6) +#define DP_PLL_LOOP_BIT_DEFAULT (0x1 << 4) +#define DP_PLL_REF_BIT_1_1250V (0x5 << 0) +#define DP_PLL_REF_BIT_1_2500V (0x7 << 0) + +/* EXYNOS_DP_INT_CTL */ +#define SOFT_INT_CTRL (0x1 << 2) +#define INT_POL (0x1 << 0) + +/* DP TX SW RESET */ +#define RESET_DP_TX (0x01 << 0) + +/* DP FUNC_EN_1 */ +#define MASTER_VID_FUNC_EN_N (0x1 << 7) +#define SLAVE_VID_FUNC_EN_N (0x1 << 5) +#define AUD_FIFO_FUNC_EN_N (0x1 << 4) +#define AUD_FUNC_EN_N (0x1 << 3) +#define HDCP_FUNC_EN_N (0x1 << 2) +#define CRC_FUNC_EN_N (0x1 << 1) +#define SW_FUNC_EN_N (0x1 << 0) + +/* DP FUNC_EN_2 */ +#define SSC_FUNC_EN_N (0x1 << 7) +#define AUX_FUNC_EN_N (0x1 << 2) +#define SERDES_FIFO_FUNC_EN_N (0x1 << 1) +#define LS_CLK_DOMAIN_FUNC_EN_N (0x1 << 0) + +/* EXYNOS_DP_PHY_PD */ +#define PHY_PD (0x1 << 5) +#define AUX_PD (0x1 << 4) +#define CH3_PD (0x1 << 3) +#define CH2_PD (0x1 << 2) +#define CH1_PD (0x1 << 1) +#define CH0_PD (0x1 << 0) + +/* EXYNOS_DP_COMMON_INT_STA_1 */ +#define VSYNC_DET (0x1 << 7) +#define PLL_LOCK_CHG (0x1 << 6) +#define SPDIF_ERR (0x1 << 5) +#define SPDIF_UNSTBL (0x1 << 4) +#define VID_FORMAT_CHG (0x1 << 3) +#define AUD_CLK_CHG (0x1 << 2) +#define VID_CLK_CHG (0x1 << 1) +#define SW_INT (0x1 << 0) + +/* EXYNOS_DP_DEBUG_CTL */ +#define PLL_LOCK (0x1 << 4) +#define F_PLL_LOCK (0x1 << 3) +#define PLL_LOCK_CTRL (0x1 << 2) + +/* EXYNOS_DP_FUNC_EN_2 */ +#define SSC_FUNC_EN_N (0x1 << 7) +#define AUX_FUNC_EN_N (0x1 << 2) +#define SERDES_FIFO_FUNC_EN_N (0x1 << 1) +#define LS_CLK_DOMAIN_FUNC_EN_N (0x1 << 0) + +/* EXYNOS_DP_COMMON_INT_STA_4 */ +#define PSR_ACTIVE (0x1 << 7) +#define PSR_INACTIVE (0x1 << 6) +#define SPDIF_BI_PHASE_ERR (0x1 << 5) +#define HOTPLUG_CHG (0x1 << 2) +#define HPD_LOST (0x1 << 1) +#define PLUG (0x1 << 0) + +/* EXYNOS_DP_INT_STA */ +#define INT_HPD (0x1 << 6) +#define HW_TRAINING_FINISH (0x1 << 5) +#define RPLY_RECEIV (0x1 << 1) +#define AUX_ERR (0x1 << 0) + +/* EXYNOS_DP_SYS_CTL_3 */ +#define HPD_STATUS (0x1 << 6) +#define F_HPD (0x1 << 5) +#define HPD_CTRL (0x1 << 4) +#define HDCP_RDY (0x1 << 3) +#define STRM_VALID (0x1 << 2) +#define F_VALID (0x1 << 1) +#define VALID_CTRL (0x1 << 0) + +/* EXYNOS_DP_AUX_HW_RETRY_CTL */ +#define AUX_BIT_PERIOD_EXPECTED_DELAY(x) (((x) & 0x7) << 8) +#define AUX_HW_RETRY_INTERVAL_MASK (0x3 << 3) +#define AUX_HW_RETRY_INTERVAL_600_MICROSECONDS (0x0 << 3) +#define AUX_HW_RETRY_INTERVAL_800_MICROSECONDS (0x1 << 3) +#define AUX_HW_RETRY_INTERVAL_1000_MICROSECONDS (0x2 << 3) +#define AUX_HW_RETRY_INTERVAL_1800_MICROSECONDS (0x3 << 3) +#define AUX_HW_RETRY_COUNT_SEL(x) (((x) & 0x7) << 0) + +/* EXYNOS_DP_AUX_CH_DEFER_CTL */ +#define DEFER_CTRL_EN (0x1 << 7) +#define DEFER_COUNT(x) (((x) & 0x7f) << 0) + +#define COMMON_INT_MASK_1 (0) +#define COMMON_INT_MASK_2 (0) +#define COMMON_INT_MASK_3 (0) +#define COMMON_INT_MASK_4 (0) +#define INT_STA_MASK (0) + +/* EXYNOS_DP_BUFFER_DATA_CTL */ +#define BUF_CLR (0x1 << 7) +#define BUF_DATA_COUNT(x) (((x) & 0x1f) << 0) + +/* EXYNOS_DP_AUX_ADDR_7_0 */ +#define AUX_ADDR_7_0(x) (((x) >> 0) & 0xff) + +/* EXYNOS_DP_AUX_ADDR_15_8 */ +#define AUX_ADDR_15_8(x) (((x) >> 8) & 0xff) + +/* EXYNOS_DP_AUX_ADDR_19_16 */ +#define AUX_ADDR_19_16(x) (((x) >> 16) & 0x0f) + +/* EXYNOS_DP_AUX_CH_CTL_1 */ +#define AUX_LENGTH(x) (((x - 1) & 0xf) << 4) +#define AUX_TX_COMM_MASK (0xf << 0) +#define AUX_TX_COMM_DP_TRANSACTION (0x1 << 3) +#define AUX_TX_COMM_I2C_TRANSACTION (0x0 << 3) +#define AUX_TX_COMM_MOT (0x1 << 2) +#define AUX_TX_COMM_WRITE (0x0 << 0) +#define AUX_TX_COMM_READ (0x1 << 0) + +/* EXYNOS_DP_AUX_CH_CTL_2 */ +#define ADDR_ONLY (0x1 << 1) +#define AUX_EN (0x1 << 0) + +/* EXYNOS_DP_AUX_CH_STA */ +#define AUX_BUSY (0x1 << 4) +#define AUX_STATUS_MASK (0xf << 0) + +/* EXYNOS_DP_AUX_RX_COMM */ +#define AUX_RX_COMM_I2C_DEFER (0x2 << 2) +#define AUX_RX_COMM_AUX_DEFER (0x2 << 0) + +/* EXYNOS_DP_PHY_TEST */ +#define MACRO_RST (0x1 << 5) +#define CH1_TEST (0x1 << 1) +#define CH0_TEST (0x1 << 0) + +/* EXYNOS_DP_TRAINING_PTN_SET */ +#define SCRAMBLER_TYPE (0x1 << 9) +#define HW_LINK_TRAINING_PATTERN (0x1 << 8) +#define SCRAMBLING_DISABLE (0x1 << 5) +#define SCRAMBLING_ENABLE (0x0 << 5) +#define LINK_QUAL_PATTERN_SET_MASK (0x3 << 2) +#define LINK_QUAL_PATTERN_SET_PRBS7 (0x3 << 2) +#define LINK_QUAL_PATTERN_SET_D10_2 (0x1 << 2) +#define LINK_QUAL_PATTERN_SET_DISABLE (0x0 << 2) +#define SW_TRAINING_PATTERN_SET_MASK (0x3 << 0) +#define SW_TRAINING_PATTERN_SET_PTN2 (0x2 << 0) +#define SW_TRAINING_PATTERN_SET_PTN1 (0x1 << 0) +#define SW_TRAINING_PATTERN_SET_NORMAL (0x0 << 0) + +/* EXYNOS_DP_TOTAL_LINE_CFG */ +#define TOTAL_LINE_CFG_L(x) ((x) & 0xff) +#define TOTAL_LINE_CFG_H(x) ((((x) >> 8)) & 0xff) +#define ACTIVE_LINE_CFG_L(x) ((x) & 0xff) +#define ACTIVE_LINE_CFG_H(x) (((x) >> 8) & 0xff) +#define TOTAL_PIXEL_CFG_L(x) ((x) & 0xff) +#define TOTAL_PIXEL_CFG_H(x) ((((x) >> 8)) & 0xff) +#define ACTIVE_PIXEL_CFG_L(x) ((x) & 0xff) +#define ACTIVE_PIXEL_CFG_H(x) ((((x) >> 8)) & 0xff) + +#define H_F_PORCH_CFG_L(x) ((x) & 0xff) +#define H_F_PORCH_CFG_H(x) ((((x) >> 8)) & 0xff) +#define H_SYNC_PORCH_CFG_L(x) ((x) & 0xff) +#define H_SYNC_PORCH_CFG_H(x) ((((x) >> 8)) & 0xff) +#define H_B_PORCH_CFG_L(x) ((x) & 0xff) +#define H_B_PORCH_CFG_H(x) ((((x) >> 8)) & 0xff) + +/* EXYNOS_DP_LN0_LINK_TRAINING_CTL */ +#define MAX_PRE_EMPHASIS_REACH_0 (0x1 << 5) +#define PRE_EMPHASIS_SET_0_SET(x) (((x) & 0x3) << 3) +#define PRE_EMPHASIS_SET_0_GET(x) (((x) >> 3) & 0x3) +#define PRE_EMPHASIS_SET_0_MASK (0x3 << 3) +#define PRE_EMPHASIS_SET_0_SHIFT (3) +#define PRE_EMPHASIS_SET_0_LEVEL_3 (0x3 << 3) +#define PRE_EMPHASIS_SET_0_LEVEL_2 (0x2 << 3) +#define PRE_EMPHASIS_SET_0_LEVEL_1 (0x1 << 3) +#define PRE_EMPHASIS_SET_0_LEVEL_0 (0x0 << 3) +#define MAX_DRIVE_CURRENT_REACH_0 (0x1 << 2) +#define DRIVE_CURRENT_SET_0_MASK (0x3 << 0) +#define DRIVE_CURRENT_SET_0_SET(x) (((x) & 0x3) << 0) +#define DRIVE_CURRENT_SET_0_GET(x) (((x) >> 0) & 0x3) +#define DRIVE_CURRENT_SET_0_LEVEL_3 (0x3 << 0) +#define DRIVE_CURRENT_SET_0_LEVEL_2 (0x2 << 0) +#define DRIVE_CURRENT_SET_0_LEVEL_1 (0x1 << 0) +#define DRIVE_CURRENT_SET_0_LEVEL_0 (0x0 << 0) + +/* EXYNOS_DP_LN1_LINK_TRAINING_CTL */ +#define MAX_PRE_EMPHASIS_REACH_1 (0x1 << 5) +#define PRE_EMPHASIS_SET_1_SET(x) (((x) & 0x3) << 3) +#define PRE_EMPHASIS_SET_1_GET(x) (((x) >> 3) & 0x3) +#define PRE_EMPHASIS_SET_1_MASK (0x3 << 3) +#define PRE_EMPHASIS_SET_1_SHIFT (3) +#define PRE_EMPHASIS_SET_1_LEVEL_3 (0x3 << 3) +#define PRE_EMPHASIS_SET_1_LEVEL_2 (0x2 << 3) +#define PRE_EMPHASIS_SET_1_LEVEL_1 (0x1 << 3) +#define PRE_EMPHASIS_SET_1_LEVEL_0 (0x0 << 3) +#define MAX_DRIVE_CURRENT_REACH_1 (0x1 << 2) +#define DRIVE_CURRENT_SET_1_MASK (0x3 << 0) +#define DRIVE_CURRENT_SET_1_SET(x) (((x) & 0x3) << 0) +#define DRIVE_CURRENT_SET_1_GET(x) (((x) >> 0) & 0x3) +#define DRIVE_CURRENT_SET_1_LEVEL_3 (0x3 << 0) +#define DRIVE_CURRENT_SET_1_LEVEL_2 (0x2 << 0) +#define DRIVE_CURRENT_SET_1_LEVEL_1 (0x1 << 0) +#define DRIVE_CURRENT_SET_1_LEVEL_0 (0x0 << 0) + +/* EXYNOS_DP_LN2_LINK_TRAINING_CTL */ +#define MAX_PRE_EMPHASIS_REACH_2 (0x1 << 5) +#define PRE_EMPHASIS_SET_2_SET(x) (((x) & 0x3) << 3) +#define PRE_EMPHASIS_SET_2_GET(x) (((x) >> 3) & 0x3) +#define PRE_EMPHASIS_SET_2_MASK (0x3 << 3) +#define PRE_EMPHASIS_SET_2_SHIFT (3) +#define PRE_EMPHASIS_SET_2_LEVEL_3 (0x3 << 3) +#define PRE_EMPHASIS_SET_2_LEVEL_2 (0x2 << 3) +#define PRE_EMPHASIS_SET_2_LEVEL_1 (0x1 << 3) +#define PRE_EMPHASIS_SET_2_LEVEL_0 (0x0 << 3) +#define MAX_DRIVE_CURRENT_REACH_2 (0x1 << 2) +#define DRIVE_CURRENT_SET_2_MASK (0x3 << 0) +#define DRIVE_CURRENT_SET_2_SET(x) (((x) & 0x3) << 0) +#define DRIVE_CURRENT_SET_2_GET(x) (((x) >> 0) & 0x3) +#define DRIVE_CURRENT_SET_2_LEVEL_3 (0x3 << 0) +#define DRIVE_CURRENT_SET_2_LEVEL_2 (0x2 << 0) +#define DRIVE_CURRENT_SET_2_LEVEL_1 (0x1 << 0) +#define DRIVE_CURRENT_SET_2_LEVEL_0 (0x0 << 0) + +/* EXYNOS_DP_LN3_LINK_TRAINING_CTL */ +#define MAX_PRE_EMPHASIS_REACH_3 (0x1 << 5) +#define PRE_EMPHASIS_SET_3_SET(x) (((x) & 0x3) << 3) +#define PRE_EMPHASIS_SET_3_GET(x) (((x) >> 3) & 0x3) +#define PRE_EMPHASIS_SET_3_MASK (0x3 << 3) +#define PRE_EMPHASIS_SET_3_SHIFT (3) +#define PRE_EMPHASIS_SET_3_LEVEL_3 (0x3 << 3) +#define PRE_EMPHASIS_SET_3_LEVEL_2 (0x2 << 3) +#define PRE_EMPHASIS_SET_3_LEVEL_1 (0x1 << 3) +#define PRE_EMPHASIS_SET_3_LEVEL_0 (0x0 << 3) +#define MAX_DRIVE_CURRENT_REACH_3 (0x1 << 2) +#define DRIVE_CURRENT_SET_3_MASK (0x3 << 0) +#define DRIVE_CURRENT_SET_3_SET(x) (((x) & 0x3) << 0) +#define DRIVE_CURRENT_SET_3_GET(x) (((x) >> 0) & 0x3) +#define DRIVE_CURRENT_SET_3_LEVEL_3 (0x3 << 0) +#define DRIVE_CURRENT_SET_3_LEVEL_2 (0x2 << 0) +#define DRIVE_CURRENT_SET_3_LEVEL_1 (0x1 << 0) +#define DRIVE_CURRENT_SET_3_LEVEL_0 (0x0 << 0) + +/* EXYNOS_DP_VIDEO_CTL_10 */ +#define FORMAT_SEL (0x1 << 4) +#define INTERACE_SCAN_CFG (0x1 << 2) +#define INTERACE_SCAN_CFG_SHIFT (2) +#define VSYNC_POLARITY_CFG (0x1 << 1) +#define V_S_POLARITY_CFG_SHIFT (1) +#define HSYNC_POLARITY_CFG (0x1 << 0) +#define H_S_POLARITY_CFG_SHIFT (0) + +/* EXYNOS_DP_SOC_GENERAL_CTL */ +#define AUDIO_MODE_SPDIF_MODE (0x1 << 8) +#define AUDIO_MODE_MASTER_MODE (0x0 << 8) +#define MASTER_VIDEO_INTERLACE_EN (0x1 << 4) +#define VIDEO_MASTER_CLK_SEL (0x1 << 2) +#define VIDEO_MASTER_MODE_EN (0x1 << 1) +#define VIDEO_MODE_MASK (0x1 << 0) +#define VIDEO_MODE_SLAVE_MODE (0x1 << 0) +#define VIDEO_MODE_MASTER_MODE (0x0 << 0) + +/* EXYNOS_DP_VIDEO_CTL_1 */ +#define VIDEO_EN (0x1 << 7) +#define HDCP_VIDEO_MUTE (0x1 << 6) + +/* EXYNOS_DP_VIDEO_CTL_2 */ +#define IN_D_RANGE_MASK (0x1 << 7) +#define IN_D_RANGE_SHIFT (7) +#define IN_D_RANGE_CEA (0x1 << 7) +#define IN_D_RANGE_VESA (0x0 << 7) +#define IN_BPC_MASK (0x7 << 4) +#define IN_BPC_SHIFT (4) +#define IN_BPC_12_BITS (0x3 << 4) +#define IN_BPC_10_BITS (0x2 << 4) +#define IN_BPC_8_BITS (0x1 << 4) +#define IN_BPC_6_BITS (0x0 << 4) +#define IN_COLOR_F_MASK (0x3 << 0) +#define IN_COLOR_F_SHIFT (0) +#define IN_COLOR_F_YCBCR444 (0x2 << 0) +#define IN_COLOR_F_YCBCR422 (0x1 << 0) +#define IN_COLOR_F_RGB (0x0 << 0) + +/* EXYNOS_DP_VIDEO_CTL_3 */ +#define IN_YC_COEFFI_MASK (0x1 << 7) +#define IN_YC_COEFFI_SHIFT (7) +#define IN_YC_COEFFI_ITU709 (0x1 << 7) +#define IN_YC_COEFFI_ITU601 (0x0 << 7) +#define VID_CHK_UPDATE_TYPE_MASK (0x1 << 4) +#define VID_CHK_UPDATE_TYPE_SHIFT (4) +#define VID_CHK_UPDATE_TYPE_1 (0x1 << 4) +#define VID_CHK_UPDATE_TYPE_0 (0x0 << 4) + +/* EXYNOS_DP_TEST_PATTERN_GEN_EN */ +#define TEST_PATTERN_GEN_EN (0x1 << 0) +#define TEST_PATTERN_GEN_DIS (0x0 << 0) + +/* EXYNOS_DP_TEST_PATTERN_GEN_CTRL */ +#define TEST_PATTERN_MODE_COLOR_SQUARE (0x3 << 0) +#define TEST_PATTERN_MODE_BALCK_WHITE_V_LINES (0x2 << 0) +#define TEST_PATTERN_MODE_COLOR_RAMP (0x1 << 0) + +/* EXYNOS_DP_VIDEO_CTL_4 */ +#define BIST_EN (0x1 << 3) +#define BIST_WIDTH_MASK (0x1 << 2) +#define BIST_WIDTH_BAR_32_PIXEL (0x0 << 2) +#define BIST_WIDTH_BAR_64_PIXEL (0x1 << 2) +#define BIST_TYPE_MASK (0x3 << 0) +#define BIST_TYPE_COLOR_BAR (0x0 << 0) +#define BIST_TYPE_WHITE_GRAY_BLACK_BAR (0x1 << 0) +#define BIST_TYPE_MOBILE_WHITE_BAR (0x2 << 0) + +/* EXYNOS_DP_SYS_CTL_1 */ +#define DET_STA (0x1 << 2) +#define FORCE_DET (0x1 << 1) +#define DET_CTRL (0x1 << 0) + +/* EXYNOS_DP_SYS_CTL_2 */ +#define CHA_CRI(x) (((x) & 0xf) << 4) +#define CHA_STA (0x1 << 2) +#define FORCE_CHA (0x1 << 1) +#define CHA_CTRL (0x1 << 0) + +/* EXYNOS_DP_SYS_CTL_3 */ +#define HPD_STATUS (0x1 << 6) +#define F_HPD (0x1 << 5) +#define HPD_CTRL (0x1 << 4) +#define HDCP_RDY (0x1 << 3) +#define STRM_VALID (0x1 << 2) +#define F_VALID (0x1 << 1) +#define VALID_CTRL (0x1 << 0) + +/* EXYNOS_DP_SYS_CTL_4 */ +#define FIX_M_AUD (0x1 << 4) +#define ENHANCED (0x1 << 3) +#define FIX_M_VID (0x1 << 2) +#define M_VID_UPDATE_CTRL (0x3 << 0) + +/* EXYNOS_M_VID_X */ +#define M_VID0_CFG(x) ((x) & 0xff) +#define M_VID1_CFG(x) (((x) >> 8) & 0xff) +#define M_VID2_CFG(x) (((x) >> 16) & 0xff) + +/* EXYNOS_M_VID_X */ +#define N_VID0_CFG(x) ((x) & 0xff) +#define N_VID1_CFG(x) (((x) >> 8) & 0xff) +#define N_VID2_CFG(x) (((x) >> 16) & 0xff) + +/* DPCD_TRAINING_PATTERN_SET */ +#define DPCD_SCRAMBLING_DISABLED (0x1 << 5) +#define DPCD_SCRAMBLING_ENABLED (0x0 << 5) +#define DPCD_TRAINING_PATTERN_2 (0x2 << 0) +#define DPCD_TRAINING_PATTERN_1 (0x1 << 0) +#define DPCD_TRAINING_PATTERN_DISABLED (0x0 << 0) + +/* Definition for DPCD Register */ +#define DPCD_DPCD_REV (0x0000) +#define DPCD_MAX_LINK_RATE (0x0001) +#define DPCD_MAX_LANE_COUNT (0x0002) +#define DPCD_LINK_BW_SET (0x0100) +#define DPCD_LANE_COUNT_SET (0x0101) +#define DPCD_TRAINING_PATTERN_SET (0x0102) +#define DPCD_TRAINING_LANE0_SET (0x0103) +#define DPCD_LANE0_1_STATUS (0x0202) +#define DPCD_LN_ALIGN_UPDATED (0x0204) +#define DPCD_ADJUST_REQUEST_LANE0_1 (0x0206) +#define DPCD_ADJUST_REQUEST_LANE2_3 (0x0207) +#define DPCD_TEST_REQUEST (0x0218) +#define DPCD_TEST_RESPONSE (0x0260) +#define DPCD_TEST_EDID_CHECKSUM (0x0261) +#define DPCD_SINK_POWER_STATE (0x0600) + +/* DPCD_TEST_REQUEST */ +#define DPCD_TEST_EDID_READ (0x1 << 2) + +/* DPCD_TEST_RESPONSE */ +#define DPCD_TEST_EDID_CHECKSUM_WRITE (0x1 << 2) + +/* DPCD_SINK_POWER_STATE */ +#define DPCD_SET_POWER_STATE_D0 (0x1 << 0) +#define DPCD_SET_POWER_STATE_D4 (0x2 << 0) + +/* I2C EDID Chip ID, Slave Address */ +#define I2C_EDID_DEVICE_ADDR (0x50) +#define I2C_E_EDID_DEVICE_ADDR (0x30) +#define EDID_BLOCK_LENGTH (0x80) +#define EDID_HEADER_PATTERN (0x00) +#define EDID_EXTENSION_FLAG (0x7e) +#define EDID_CHECKSUM (0x7f) + +/* DPCD_LANE0_1_STATUS */ +#define DPCD_LANE1_SYMBOL_LOCKED (0x1 << 6) +#define DPCD_LANE1_CHANNEL_EQ_DONE (0x1 << 5) +#define DPCD_LANE1_CR_DONE (0x1 << 4) +#define DPCD_LANE0_SYMBOL_LOCKED (0x1 << 2) +#define DPCD_LANE0_CHANNEL_EQ_DONE (0x1 << 1) +#define DPCD_LANE0_CR_DONE (0x1 << 0) + +/* DPCD_ADJUST_REQUEST_LANE0_1 */ +#define DPCD_PRE_EMPHASIS_LANE1_MASK (0x3 << 6) +#define DPCD_PRE_EMPHASIS_LANE1(x) (((x) >> 6) & 0x3) +#define DPCD_PRE_EMPHASIS_LANE1_LEVEL_3 (0x3 << 6) +#define DPCD_PRE_EMPHASIS_LANE1_LEVEL_2 (0x2 << 6) +#define DPCD_PRE_EMPHASIS_LANE1_LEVEL_1 (0x1 << 6) +#define DPCD_PRE_EMPHASIS_LANE1_LEVEL_0 (0x0 << 6) +#define DPCD_VOLTAGE_SWING_LANE1_MASK (0x3 << 4) +#define DPCD_VOLTAGE_SWING_LANE1(x) (((x) >> 4) & 0x3) +#define DPCD_VOLTAGE_SWING_LANE1_LEVEL_3 (0x3 << 4) +#define DPCD_VOLTAGE_SWING_LANE1_LEVEL_2 (0x2 << 4) +#define DPCD_VOLTAGE_SWING_LANE1_LEVEL_1 (0x1 << 4) +#define DPCD_VOLTAGE_SWING_LANE1_LEVEL_0 (0x0 << 4) +#define DPCD_PRE_EMPHASIS_LANE0_MASK (0x3 << 2) +#define DPCD_PRE_EMPHASIS_LANE0(x) (((x) >> 2) & 0x3) +#define DPCD_PRE_EMPHASIS_LANE0_LEVEL_3 (0x3 << 2) +#define DPCD_PRE_EMPHASIS_LANE0_LEVEL_2 (0x2 << 2) +#define DPCD_PRE_EMPHASIS_LANE0_LEVEL_1 (0x1 << 2) +#define DPCD_PRE_EMPHASIS_LANE0_LEVEL_0 (0x0 << 2) +#define DPCD_VOLTAGE_SWING_LANE0_MASK (0x3 << 0) +#define DPCD_VOLTAGE_SWING_LANE0(x) (((x) >> 0) & 0x3) +#define DPCD_VOLTAGE_SWING_LANE0_LEVEL_3 (0x3 << 0) +#define DPCD_VOLTAGE_SWING_LANE0_LEVEL_2 (0x2 << 0) +#define DPCD_VOLTAGE_SWING_LANE0_LEVEL_1 (0x1 << 0) +#define DPCD_VOLTAGE_SWING_LANE0_LEVEL_0 (0x0 << 0) + +/* DPCD_ADJUST_REQUEST_LANE2_3 */ +#define DPCD_PRE_EMPHASIS_LANE2_MASK (0x3 << 6) +#define DPCD_PRE_EMPHASIS_LANE2(x) (((x) >> 6) & 0x3) +#define DPCD_PRE_EMPHASIS_LANE2_LEVEL_3 (0x3 << 6) +#define DPCD_PRE_EMPHASIS_LANE2_LEVEL_2 (0x2 << 6) +#define DPCD_PRE_EMPHASIS_LANE2_LEVEL_1 (0x1 << 6) +#define DPCD_PRE_EMPHASIS_LANE2_LEVEL_0 (0x0 << 6) +#define DPCD_VOLTAGE_SWING_LANE2_MASK (0x3 << 4) +#define DPCD_VOLTAGE_SWING_LANE2(x) (((x) >> 4) & 0x3) +#define DPCD_VOLTAGE_SWING_LANE2_LEVEL_3 (0x3 << 4) +#define DPCD_VOLTAGE_SWING_LANE2_LEVEL_2 (0x2 << 4) +#define DPCD_VOLTAGE_SWING_LANE2_LEVEL_1 (0x1 << 4) +#define DPCD_VOLTAGE_SWING_LANE2_LEVEL_0 (0x0 << 4) +#define DPCD_PRE_EMPHASIS_LANE3_MASK (0x3 << 2) +#define DPCD_PRE_EMPHASIS_LANE3(x) (((x) >> 2) & 0x3) +#define DPCD_PRE_EMPHASIS_LANE3_LEVEL_3 (0x3 << 2) +#define DPCD_PRE_EMPHASIS_LANE3_LEVEL_2 (0x2 << 2) +#define DPCD_PRE_EMPHASIS_LANE3_LEVEL_1 (0x1 << 2) +#define DPCD_PRE_EMPHASIS_LANE3_LEVEL_0 (0x0 << 2) +#define DPCD_VOLTAGE_SWING_LANE3_MASK (0x3 << 0) +#define DPCD_VOLTAGE_SWING_LANE3(x) (((x) >> 0) & 0x3) +#define DPCD_VOLTAGE_SWING_LANE3_LEVEL_3 (0x3 << 0) +#define DPCD_VOLTAGE_SWING_LANE3_LEVEL_2 (0x2 << 0) +#define DPCD_VOLTAGE_SWING_LANE3_LEVEL_1 (0x1 << 0) +#define DPCD_VOLTAGE_SWING_LANE3_LEVEL_0 (0x0 << 0) + +/* DPCD_LANE_COUNT_SET */ +#define DPCD_ENHANCED_FRAME_EN (0x1 << 7) +#define DPCD_LN_COUNT_SET(x) ((x) & 0x1f) + +/* DPCD_LANE_ALIGN__STATUS_UPDATED */ +#define DPCD_LINK_STATUS_UPDATED (0x1 << 7) +#define DPCD_DOWNSTREAM_PORT_STATUS_CHANGED (0x1 << 6) +#define DPCD_INTERLANE_ALIGN_DONE (0x1 << 0) + +/* DPCD_TRAINING_LANE0_SET */ +#define DPCD_PRE_EMPHASIS_SET_PATTERN_2_LEVEL_3 (0x3 << 3) +#define DPCD_PRE_EMPHASIS_SET_PATTERN_2_LEVEL_2 (0x2 << 3) +#define DPCD_PRE_EMPHASIS_SET_PATTERN_2_LEVEL_1 (0x1 << 3) +#define DPCD_PRE_EMPHASIS_SET_PATTERN_2_LEVEL_0 (0x0 << 3) +#define DPCD_VOLTAGE_SWING_SET_PATTERN_1_LEVEL_3 (0x3 << 0) +#define DPCD_VOLTAGE_SWING_SET_PATTERN_1_LEVEL_2 (0x2 << 0) +#define DPCD_VOLTAGE_SWING_SET_PATTERN_1_LEVEL_1 (0x1 << 0) +#define DPCD_VOLTAGE_SWING_SET_PATTERN_1_LEVEL_0 (0x0 << 0) + +#define DPCD_REQ_ADJ_SWING (0x00) +#define DPCD_REQ_ADJ_EMPHASIS (0x01) + +#define DP_LANE_STAT_CR_DONE (0x01 << 0) +#define DP_LANE_STAT_CE_DONE (0x01 << 1) +#define DP_LANE_STAT_SYM_LOCK (0x01 << 2) + +#endif diff --git a/arch/arm/include/asm/arch-exynos/dp_info.h b/arch/arm/include/asm/arch-exynos/dp_info.h new file mode 100644 index 0000000000..35694980fa --- /dev/null +++ b/arch/arm/include/asm/arch-exynos/dp_info.h @@ -0,0 +1,214 @@ +/* + * Copyright (C) 2012 Samsung Electronics + * + * Author: Donghwa Lee <dh09.lee@samsung.com> + * + * 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. + * + * 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, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#ifndef _DP_INFO_H +#define _DP_INFO_H + +#define msleep(a) udelay(a * 1000) + +#define DP_TIMEOUT_LOOP_COUNT 100 +#define MAX_CR_LOOP 5 +#define MAX_EQ_LOOP 4 + +#define EXYNOS_DP_SUCCESS 0 + +enum { + DP_DISABLE, + DP_ENABLE, +}; + +struct edp_disp_info { + char *name; + unsigned int h_total; + unsigned int h_res; + unsigned int h_sync_width; + unsigned int h_back_porch; + unsigned int h_front_porch; + unsigned int v_total; + unsigned int v_res; + unsigned int v_sync_width; + unsigned int v_back_porch; + unsigned int v_front_porch; + + unsigned int v_sync_rate; +}; + +struct edp_link_train_info { + unsigned int lt_status; + + unsigned int ep_loop; + unsigned int cr_loop[4]; + +}; + +struct edp_video_info { + unsigned int master_mode; + unsigned int bist_mode; + unsigned int bist_pattern; + + unsigned int h_sync_polarity; + unsigned int v_sync_polarity; + unsigned int interlaced; + + unsigned int color_space; + unsigned int dynamic_range; + unsigned int ycbcr_coeff; + unsigned int color_depth; +}; + +struct edp_device_info { + struct edp_disp_info disp_info; + struct edp_link_train_info lt_info; + struct edp_video_info video_info; + + /*below info get from panel during training*/ + unsigned char lane_bw; + unsigned char lane_cnt; + unsigned char dpcd_rev; + /*support enhanced frame cap */ + unsigned char dpcd_efc; +}; + +enum analog_power_block { + AUX_BLOCK, + CH0_BLOCK, + CH1_BLOCK, + CH2_BLOCK, + CH3_BLOCK, + ANALOG_TOTAL, + POWER_ALL +}; + +enum pll_status { + PLL_UNLOCKED = 0, + PLL_LOCKED +}; + +enum { + COLOR_RGB, + COLOR_YCBCR422, + COLOR_YCBCR444 +}; + +enum { + VESA, + CEA +}; + +enum { + COLOR_YCBCR601, + COLOR_YCBCR709 +}; + +enum { + COLOR_6, + COLOR_8, + COLOR_10, + COLOR_12 +}; + +enum { + DP_LANE_BW_1_62 = 0x06, + DP_LANE_BW_2_70 = 0x0a, +}; + +enum { + DP_LANE_CNT_1 = 1, + DP_LANE_CNT_2 = 2, + DP_LANE_CNT_4 = 4, +}; + +enum { + DP_DPCD_REV_10 = 0x10, + DP_DPCD_REV_11 = 0x11, +}; + +enum { + DP_LT_NONE, + DP_LT_START, + DP_LT_CR, + DP_LT_ET, + DP_LT_FINISHED, + DP_LT_FAIL, +}; + +enum { + PRE_EMPHASIS_LEVEL_0, + PRE_EMPHASIS_LEVEL_1, + PRE_EMPHASIS_LEVEL_2, + PRE_EMPHASIS_LEVEL_3, +}; + +enum { + PRBS7, + D10_2, + TRAINING_PTN1, + TRAINING_PTN2, + DP_NONE +}; + +enum { + VOLTAGE_LEVEL_0, + VOLTAGE_LEVEL_1, + VOLTAGE_LEVEL_2, + VOLTAGE_LEVEL_3, +}; + +enum pattern_type { + NO_PATTERN, + COLOR_RAMP, + BALCK_WHITE_V_LINES, + COLOR_SQUARE, + INVALID_PATTERN, + COLORBAR_32, + COLORBAR_64, + WHITE_GRAY_BALCKBAR_32, + WHITE_GRAY_BALCKBAR_64, + MOBILE_WHITEBAR_32, + MOBILE_WHITEBAR_64 +}; + +enum { + CALCULATED_M, + REGISTER_M +}; + +enum { + VIDEO_TIMING_FROM_CAPTURE, + VIDEO_TIMING_FROM_REGISTER +}; + + +struct exynos_dp_platform_data { + struct edp_device_info *edp_dev_info; + void (*phy_enable)(unsigned int); +}; + +#ifdef CONFIG_EXYNOS_DP +unsigned int exynos_init_dp(void); +#else +unsigned int exynos_init_dp(void) +{ + return 0; +} +#endif + +#endif /* _DP_INFO_H */ diff --git a/drivers/video/Makefile b/drivers/video/Makefile index 2f8e2b521a..143bdc98e0 100644 --- a/drivers/video/Makefile +++ b/drivers/video/Makefile @@ -29,6 +29,7 @@ COBJS-$(CONFIG_ATI_RADEON_FB) += ati_radeon_fb.o videomodes.o COBJS-$(CONFIG_ATMEL_HLCD) += atmel_hlcdfb.o COBJS-$(CONFIG_ATMEL_LCD) += atmel_lcdfb.o COBJS-$(CONFIG_CFB_CONSOLE) += cfb_console.o +COBJS-$(CONFIG_EXYNOS_DP) += exynos_dp.o exynos_dp_lowlevel.o COBJS-$(CONFIG_EXYNOS_FB) += exynos_fb.o exynos_fimd.o COBJS-$(CONFIG_EXYNOS_MIPI_DSIM) += exynos_mipi_dsi.o exynos_mipi_dsi_common.o \ exynos_mipi_dsi_lowlevel.o diff --git a/drivers/video/exynos_dp.c b/drivers/video/exynos_dp.c new file mode 100644 index 0000000000..53e410120a --- /dev/null +++ b/drivers/video/exynos_dp.c @@ -0,0 +1,925 @@ +/* + * Copyright (C) 2012 Samsung Electronics + * + * Author: Donghwa Lee <dh09.lee@samsung.com> + * + * 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. + * + * 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, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <config.h> +#include <common.h> +#include <malloc.h> +#include <linux/err.h> +#include <asm/arch/clk.h> +#include <asm/arch/cpu.h> +#include <asm/arch/dp_info.h> +#include <asm/arch/dp.h> + +#include "exynos_dp_lowlevel.h" + +static struct exynos_dp_platform_data *dp_pd; + +static void exynos_dp_disp_info(struct edp_disp_info *disp_info) +{ + disp_info->h_total = disp_info->h_res + disp_info->h_sync_width + + disp_info->h_back_porch + disp_info->h_front_porch; + disp_info->v_total = disp_info->v_res + disp_info->v_sync_width + + disp_info->v_back_porch + disp_info->v_front_porch; + + return; +} + +static int exynos_dp_init_dp(void) +{ + int ret; + exynos_dp_reset(); + + /* SW defined function Normal operation */ + exynos_dp_enable_sw_func(DP_ENABLE); + + ret = exynos_dp_init_analog_func(); + if (ret != EXYNOS_DP_SUCCESS) + return ret; + + exynos_dp_init_hpd(); + exynos_dp_init_aux(); + + return ret; +} + +static unsigned char exynos_dp_calc_edid_check_sum(unsigned char *edid_data) +{ + int i; + unsigned char sum = 0; + + for (i = 0; i < EDID_BLOCK_LENGTH; i++) + sum = sum + edid_data[i]; + + return sum; +} + +static unsigned int exynos_dp_read_edid(void) +{ + unsigned char edid[EDID_BLOCK_LENGTH * 2]; + unsigned int extend_block = 0; + unsigned char sum; + unsigned char test_vector; + int retval; + + /* + * EDID device address is 0x50. + * However, if necessary, you must have set upper address + * into E-EDID in I2C device, 0x30. + */ + + /* Read Extension Flag, Number of 128-byte EDID extension blocks */ + exynos_dp_read_byte_from_i2c(I2C_EDID_DEVICE_ADDR, EDID_EXTENSION_FLAG, + &extend_block); + + if (extend_block > 0) { + printf("DP EDID data includes a single extension!\n"); + + /* Read EDID data */ + retval = exynos_dp_read_bytes_from_i2c(I2C_EDID_DEVICE_ADDR, + EDID_HEADER_PATTERN, + EDID_BLOCK_LENGTH, + &edid[EDID_HEADER_PATTERN]); + if (retval != 0) { + printf("DP EDID Read failed!\n"); + return -1; + } + sum = exynos_dp_calc_edid_check_sum(edid); + if (sum != 0) { + printf("DP EDID bad checksum!\n"); + return -1; + } + + /* Read additional EDID data */ + retval = exynos_dp_read_bytes_from_i2c(I2C_EDID_DEVICE_ADDR, + EDID_BLOCK_LENGTH, + EDID_BLOCK_LENGTH, + &edid[EDID_BLOCK_LENGTH]); + if (retval != 0) { + printf("DP EDID Read failed!\n"); + return -1; + } + sum = exynos_dp_calc_edid_check_sum(&edid[EDID_BLOCK_LENGTH]); + if (sum != 0) { + printf("DP EDID bad checksum!\n"); + return -1; + } + + exynos_dp_read_byte_from_dpcd(DPCD_TEST_REQUEST, + &test_vector); + if (test_vector & DPCD_TEST_EDID_READ) { + exynos_dp_write_byte_to_dpcd(DPCD_TEST_EDID_CHECKSUM, + edid[EDID_BLOCK_LENGTH + EDID_CHECKSUM]); + exynos_dp_write_byte_to_dpcd(DPCD_TEST_RESPONSE, + DPCD_TEST_EDID_CHECKSUM_WRITE); + } + } else { + debug("DP EDID data does not include any extensions.\n"); + + /* Read EDID data */ + retval = exynos_dp_read_bytes_from_i2c(I2C_EDID_DEVICE_ADDR, + EDID_HEADER_PATTERN, + EDID_BLOCK_LENGTH, + &edid[EDID_HEADER_PATTERN]); + + if (retval != 0) { + printf("DP EDID Read failed!\n"); + return -1; + } + sum = exynos_dp_calc_edid_check_sum(edid); + if (sum != 0) { + printf("DP EDID bad checksum!\n"); + return -1; + } + + exynos_dp_read_byte_from_dpcd(DPCD_TEST_REQUEST, + &test_vector); + if (test_vector & DPCD_TEST_EDID_READ) { + exynos_dp_write_byte_to_dpcd(DPCD_TEST_EDID_CHECKSUM, + edid[EDID_CHECKSUM]); + exynos_dp_write_byte_to_dpcd(DPCD_TEST_RESPONSE, + DPCD_TEST_EDID_CHECKSUM_WRITE); + } + } + + debug("DP EDID Read success!\n"); + + return 0; +} + +static unsigned int exynos_dp_handle_edid(struct edp_device_info *edp_info) +{ + unsigned char buf[12]; + unsigned int ret; + unsigned char temp; + unsigned char retry_cnt; + unsigned char dpcd_rev[16]; + unsigned char lane_bw[16]; + unsigned char lane_cnt[16]; + + memset(dpcd_rev, 0, 16); + memset(lane_bw, 0, 16); + memset(lane_cnt, 0, 16); + memset(buf, 0, 12); + + retry_cnt = 5; + while (retry_cnt) { + /* Read DPCD 0x0000-0x000b */ + ret = exynos_dp_read_bytes_from_dpcd(DPCD_DPCD_REV, 12, + buf); + if (ret != EXYNOS_DP_SUCCESS) { + if (retry_cnt == 0) { + printf("DP read_byte_from_dpcd() failed\n"); + return ret; + } + retry_cnt--; + } else + break; + } + + /* */ + temp = buf[DPCD_DPCD_REV]; + if (temp == DP_DPCD_REV_10 || temp == DP_DPCD_REV_11) + edp_info->dpcd_rev = temp; + else { + printf("DP Wrong DPCD Rev : %x\n", temp); + return -ENODEV; + } + + temp = buf[DPCD_MAX_LINK_RATE]; + if (temp == DP_LANE_BW_1_62 || temp == DP_LANE_BW_2_70) + edp_info->lane_bw = temp; + else { + printf("DP Wrong MAX LINK RATE : %x\n", temp); + return -EINVAL; + } + + /*Refer VESA Display Port Stnadard Ver1.1a Page 120 */ + if (edp_info->dpcd_rev == DP_DPCD_REV_11) { + temp = buf[DPCD_MAX_LANE_COUNT] & 0x1f; + if (buf[DPCD_MAX_LANE_COUNT] & 0x80) + edp_info->dpcd_efc = 1; + else + edp_info->dpcd_efc = 0; + } else { + temp = buf[DPCD_MAX_LANE_COUNT]; + edp_info->dpcd_efc = 0; + } + + if (temp == DP_LANE_CNT_1 || temp == DP_LANE_CNT_2 || + temp == DP_LANE_CNT_4) { + edp_info->lane_cnt = temp; + } else { + printf("DP Wrong MAX LANE COUNT : %x\n", temp); + return -EINVAL; + } + + ret = exynos_dp_read_edid(); + if (ret != EXYNOS_DP_SUCCESS) { + printf("DP exynos_dp_read_edid() failed\n"); + return -EINVAL; + } + + return ret; +} + +static void exynos_dp_init_training(void) +{ + /* + * MACRO_RST must be applied after the PLL_LOCK to avoid + * the DP inter pair skew issue for at least 10 us + */ + exynos_dp_reset_macro(); + + /* All DP analog module power up */ + exynos_dp_set_analog_power_down(POWER_ALL, 0); +} + +static unsigned int exynos_dp_link_start(struct edp_device_info *edp_info) +{ + unsigned char buf[5]; + unsigned int ret = 0; + + debug("DP: %s was called\n", __func__); + + edp_info->lt_info.lt_status = DP_LT_CR; + edp_info->lt_info.ep_loop = 0; + edp_info->lt_info.cr_loop[0] = 0; + edp_info->lt_info.cr_loop[1] = 0; + edp_info->lt_info.cr_loop[2] = 0; + edp_info->lt_info.cr_loop[3] = 0; + + /* Set sink to D0 (Sink Not Ready) mode. */ + ret = exynos_dp_write_byte_to_dpcd(DPCD_SINK_POWER_STATE, + DPCD_SET_POWER_STATE_D0); + if (ret != EXYNOS_DP_SUCCESS) { + printf("DP write_dpcd_byte failed\n"); + return ret; + } + + /* Set link rate and count as you want to establish*/ + exynos_dp_set_link_bandwidth(edp_info->lane_bw); + exynos_dp_set_lane_count(edp_info->lane_cnt); + + /* Setup RX configuration */ + buf[0] = edp_info->lane_bw; + buf[1] = edp_info->lane_cnt; + + ret = exynos_dp_write_bytes_to_dpcd(DPCD_LINK_BW_SET, 2, + buf); + if (ret != EXYNOS_DP_SUCCESS) { + printf("DP write_dpcd_byte failed\n"); + return ret; + } + + exynos_dp_set_lane_pre_emphasis(PRE_EMPHASIS_LEVEL_0, + edp_info->lane_cnt); + + /* Set training pattern 1 */ + exynos_dp_set_training_pattern(TRAINING_PTN1); + + /* Set RX training pattern */ + buf[0] = DPCD_SCRAMBLING_DISABLED | DPCD_TRAINING_PATTERN_1; + + buf[1] = DPCD_PRE_EMPHASIS_SET_PATTERN_2_LEVEL_0 | + DPCD_VOLTAGE_SWING_SET_PATTERN_1_LEVEL_0; + buf[2] = DPCD_PRE_EMPHASIS_SET_PATTERN_2_LEVEL_0 | + DPCD_VOLTAGE_SWING_SET_PATTERN_1_LEVEL_0; + buf[3] = DPCD_PRE_EMPHASIS_SET_PATTERN_2_LEVEL_0 | + DPCD_VOLTAGE_SWING_SET_PATTERN_1_LEVEL_0; + buf[4] = DPCD_PRE_EMPHASIS_SET_PATTERN_2_LEVEL_0 | + DPCD_VOLTAGE_SWING_SET_PATTERN_1_LEVEL_0; + + ret = exynos_dp_write_bytes_to_dpcd(DPCD_TRAINING_PATTERN_SET, + 5, buf); + if (ret != EXYNOS_DP_SUCCESS) { + printf("DP write_dpcd_byte failed\n"); + return ret; + } + + return ret; +} + +static unsigned int exynos_dp_training_pattern_dis(void) +{ + unsigned int ret = EXYNOS_DP_SUCCESS; + + exynos_dp_set_training_pattern(DP_NONE); + + ret = exynos_dp_write_byte_to_dpcd(DPCD_TRAINING_PATTERN_SET, + DPCD_TRAINING_PATTERN_DISABLED); + if (ret != EXYNOS_DP_SUCCESS) { + printf("DP requst_link_traninig_req failed\n"); + return -EAGAIN; + } + + return ret; +} + +static unsigned int exynos_dp_enable_rx_to_enhanced_mode(unsigned char enable) +{ + unsigned char data; + unsigned int ret = EXYNOS_DP_SUCCESS; + + ret = exynos_dp_read_byte_from_dpcd(DPCD_LANE_COUNT_SET, + &data); + if (ret != EXYNOS_DP_SUCCESS) { + printf("DP read_from_dpcd failed\n"); + return -EAGAIN; + } + + if (enable) + data = DPCD_ENHANCED_FRAME_EN | DPCD_LN_COUNT_SET(data); + else + data = DPCD_LN_COUNT_SET(data); + + ret = exynos_dp_write_byte_to_dpcd(DPCD_LANE_COUNT_SET, + data); + if (ret != EXYNOS_DP_SUCCESS) { + printf("DP write_to_dpcd failed\n"); + return -EAGAIN; + + } + + return ret; +} + +static unsigned int exynos_dp_set_enhanced_mode(unsigned char enhance_mode) +{ + unsigned int ret = EXYNOS_DP_SUCCESS; + + ret = exynos_dp_enable_rx_to_enhanced_mode(enhance_mode); + if (ret != EXYNOS_DP_SUCCESS) { + printf("DP rx_enhance_mode failed\n"); + return -EAGAIN; + } + + exynos_dp_enable_enhanced_mode(enhance_mode); + + return ret; +} + +static int exynos_dp_read_dpcd_lane_stat(struct edp_device_info *edp_info, + unsigned char *status) +{ + unsigned int ret, i; + unsigned char buf[2]; + unsigned char lane_stat[DP_LANE_CNT_4] = {0,}; + unsigned char shift_val[DP_LANE_CNT_4] = {0,}; + + shift_val[0] = 0; + shift_val[1] = 4; + shift_val[2] = 0; + shift_val[3] = 4; + + ret = exynos_dp_read_bytes_from_dpcd(DPCD_LANE0_1_STATUS, 2, buf); + if (ret != EXYNOS_DP_SUCCESS) { + printf("DP read lane status failed\n"); + return ret; + } + + for (i = 0; i < edp_info->lane_cnt; i++) { + lane_stat[i] = (buf[(i / 2)] >> shift_val[i]) & 0x0f; + if (lane_stat[0] != lane_stat[i]) { + printf("Wrong lane status\n"); + return -EINVAL; + } + } + + *status = lane_stat[0]; + + return ret; +} + +static unsigned int exynos_dp_read_dpcd_adj_req(unsigned char lane_num, + unsigned char *sw, unsigned char *em) +{ + unsigned int ret = EXYNOS_DP_SUCCESS; + unsigned char buf; + unsigned int dpcd_addr; + unsigned char shift_val[DP_LANE_CNT_4] = {0, 4, 0, 4}; + + /*lane_num value is used as arry index, so this range 0 ~ 3 */ + dpcd_addr = DPCD_ADJUST_REQUEST_LANE0_1 + (lane_num / 2); + + ret = exynos_dp_read_byte_from_dpcd(dpcd_addr, &buf); + if (ret != EXYNOS_DP_SUCCESS) { + printf("DP read adjust request failed\n"); + return -EAGAIN; + } + + *sw = ((buf >> shift_val[lane_num]) & 0x03); + *em = ((buf >> shift_val[lane_num]) & 0x0c) >> 2; + + return ret; +} + +static int exynos_dp_equalizer_err_link(struct edp_device_info *edp_info) +{ + int ret; + + ret = exynos_dp_training_pattern_dis(); + if (ret != EXYNOS_DP_SUCCESS) { + printf("DP training_patter_disable() failed\n"); + edp_info->lt_info.lt_status = DP_LT_FAIL; + } + + ret = exynos_dp_set_enhanced_mode(edp_info->dpcd_efc); + if (ret != EXYNOS_DP_SUCCESS) { + printf("DP set_enhanced_mode() failed\n"); + edp_info->lt_info.lt_status = DP_LT_FAIL; + } + + return ret; +} + +static int exynos_dp_reduce_link_rate(struct edp_device_info *edp_info) +{ + int ret; + + if (edp_info->lane_bw == DP_LANE_BW_2_70) { + edp_info->lane_bw = DP_LANE_BW_1_62; + printf("DP Change lane bw to 1.62Gbps\n"); + edp_info->lt_info.lt_status = DP_LT_START; + ret = EXYNOS_DP_SUCCESS; + } else { + ret = exynos_dp_training_pattern_dis(); + if (ret != EXYNOS_DP_SUCCESS) + printf("DP training_patter_disable() failed\n"); + + ret = exynos_dp_set_enhanced_mode(edp_info->dpcd_efc); + if (ret != EXYNOS_DP_SUCCESS) + printf("DP set_enhanced_mode() failed\n"); + + edp_info->lt_info.lt_status = DP_LT_FAIL; + } + + return ret; +} + +static unsigned int exynos_dp_process_clock_recovery(struct edp_device_info + *edp_info) +{ + unsigned int ret = EXYNOS_DP_SUCCESS; + unsigned char lane_stat; + unsigned char lt_ctl_val[DP_LANE_CNT_4] = {0, }; + unsigned int i; + unsigned char adj_req_sw; + unsigned char adj_req_em; + unsigned char buf[5]; + + debug("DP: %s was called\n", __func__); + mdelay(1); + + ret = exynos_dp_read_dpcd_lane_stat(edp_info, &lane_stat); + if (ret != EXYNOS_DP_SUCCESS) { + printf("DP read lane status failed\n"); + edp_info->lt_info.lt_status = DP_LT_FAIL; + return ret; + } + + if (lane_stat & DP_LANE_STAT_CR_DONE) { + debug("DP clock Recovery training succeed\n"); + exynos_dp_set_training_pattern(TRAINING_PTN2); + + for (i = 0; i < edp_info->lane_cnt; i++) { + ret = exynos_dp_read_dpcd_adj_req(i, &adj_req_sw, + &adj_req_em); + if (ret != EXYNOS_DP_SUCCESS) { + edp_info->lt_info.lt_status = DP_LT_FAIL; + return ret; + } + + lt_ctl_val[i] = 0; + lt_ctl_val[i] = adj_req_em << 3 | adj_req_sw; + + if ((adj_req_sw == VOLTAGE_LEVEL_3) + || (adj_req_em == PRE_EMPHASIS_LEVEL_3)) { + lt_ctl_val[i] |= MAX_DRIVE_CURRENT_REACH_3 | + MAX_PRE_EMPHASIS_REACH_3; + } + exynos_dp_set_lanex_pre_emphasis(lt_ctl_val[i], i); + } + + buf[0] = DPCD_SCRAMBLING_DISABLED | DPCD_TRAINING_PATTERN_2; + buf[1] = lt_ctl_val[0]; + buf[2] = lt_ctl_val[1]; + buf[3] = lt_ctl_val[2]; + buf[4] = lt_ctl_val[3]; + + ret = exynos_dp_write_bytes_to_dpcd( + DPCD_TRAINING_PATTERN_SET, 5, buf); + if (ret != EXYNOS_DP_SUCCESS) { + printf("DP write traning pattern1 failed\n"); + edp_info->lt_info.lt_status = DP_LT_FAIL; + return ret; + } else + edp_info->lt_info.lt_status = DP_LT_ET; + } else { + for (i = 0; i < edp_info->lane_cnt; i++) { + lt_ctl_val[i] = exynos_dp_get_lanex_pre_emphasis(i); + ret = exynos_dp_read_dpcd_adj_req(i, + &adj_req_sw, &adj_req_em); + if (ret != EXYNOS_DP_SUCCESS) { + printf("DP read adj req failed\n"); + edp_info->lt_info.lt_status = DP_LT_FAIL; + return ret; + } + + if ((adj_req_sw == VOLTAGE_LEVEL_3) || + (adj_req_em == PRE_EMPHASIS_LEVEL_3)) + ret = exynos_dp_reduce_link_rate(edp_info); + + if ((DRIVE_CURRENT_SET_0_GET(lt_ctl_val[i]) == + adj_req_sw) && + (PRE_EMPHASIS_SET_0_GET(lt_ctl_val[i]) == + adj_req_em)) { + edp_info->lt_info.cr_loop[i]++; + if (edp_info->lt_info.cr_loop[i] == MAX_CR_LOOP) + ret = exynos_dp_reduce_link_rate( + edp_info); + } + + lt_ctl_val[i] = 0; + lt_ctl_val[i] = adj_req_em << 3 | adj_req_sw; + + if ((adj_req_sw == VOLTAGE_LEVEL_3) || + (adj_req_em == PRE_EMPHASIS_LEVEL_3)) { + lt_ctl_val[i] |= MAX_DRIVE_CURRENT_REACH_3 | + MAX_PRE_EMPHASIS_REACH_3; + } + exynos_dp_set_lanex_pre_emphasis(lt_ctl_val[i], i); + } + + ret = exynos_dp_write_bytes_to_dpcd( + DPCD_TRAINING_LANE0_SET, 4, lt_ctl_val); + if (ret != EXYNOS_DP_SUCCESS) { + printf("DP write traning pattern2 failed\n"); + edp_info->lt_info.lt_status = DP_LT_FAIL; + return ret; + } + } + + return ret; +} + +static unsigned int exynos_dp_process_equalizer_training(struct edp_device_info + *edp_info) +{ + unsigned int ret = EXYNOS_DP_SUCCESS; + unsigned char lane_stat, adj_req_sw, adj_req_em, i; + unsigned char lt_ctl_val[DP_LANE_CNT_4] = {0,}; + unsigned char interlane_aligned = 0; + unsigned char f_bw; + unsigned char f_lane_cnt; + unsigned char sink_stat; + + mdelay(1); + + ret = exynos_dp_read_dpcd_lane_stat(edp_info, &lane_stat); + if (ret != EXYNOS_DP_SUCCESS) { + printf("DP read lane status failed\n"); + edp_info->lt_info.lt_status = DP_LT_FAIL; + return ret; + } + + debug("DP lane stat : %x\n", lane_stat); + + if (lane_stat & DP_LANE_STAT_CR_DONE) { + ret = exynos_dp_read_byte_from_dpcd(DPCD_LN_ALIGN_UPDATED, + &sink_stat); + if (ret != EXYNOS_DP_SUCCESS) { + edp_info->lt_info.lt_status = DP_LT_FAIL; + + return ret; + } + + interlane_aligned = (sink_stat & DPCD_INTERLANE_ALIGN_DONE); + + for (i = 0; i < edp_info->lane_cnt; i++) { + ret = exynos_dp_read_dpcd_adj_req(i, + &adj_req_sw, &adj_req_em); + if (ret != EXYNOS_DP_SUCCESS) { + printf("DP read adj req 1 failed\n"); + edp_info->lt_info.lt_status = DP_LT_FAIL; + + return ret; + } + + lt_ctl_val[i] = 0; + lt_ctl_val[i] = adj_req_em << 3 | adj_req_sw; + + if ((adj_req_sw == VOLTAGE_LEVEL_3) || + (adj_req_em == PRE_EMPHASIS_LEVEL_3)) { + lt_ctl_val[i] |= MAX_DRIVE_CURRENT_REACH_3; + lt_ctl_val[i] |= MAX_PRE_EMPHASIS_REACH_3; + } + } + + if (((lane_stat&DP_LANE_STAT_CE_DONE) && + (lane_stat&DP_LANE_STAT_SYM_LOCK)) + && (interlane_aligned == DPCD_INTERLANE_ALIGN_DONE)) { + debug("DP Equalizer training succeed\n"); + + f_bw = exynos_dp_get_link_bandwidth(); + f_lane_cnt = exynos_dp_get_lane_count(); + + debug("DP final BandWidth : %x\n", f_bw); + debug("DP final Lane Count : %x\n", f_lane_cnt); + + edp_info->lt_info.lt_status = DP_LT_FINISHED; + + exynos_dp_equalizer_err_link(edp_info); + + } else { + edp_info->lt_info.ep_loop++; + + if (edp_info->lt_info.ep_loop > MAX_EQ_LOOP) { + if (edp_info->lane_bw == DP_LANE_BW_2_70) { + ret = exynos_dp_reduce_link_rate( + edp_info); + } else { + edp_info->lt_info.lt_status = + DP_LT_FAIL; + exynos_dp_equalizer_err_link(edp_info); + } + } else { + for (i = 0; i < edp_info->lane_cnt; i++) + exynos_dp_set_lanex_pre_emphasis( + lt_ctl_val[i], i); + + ret = exynos_dp_write_bytes_to_dpcd( + DPCD_TRAINING_LANE0_SET, + 4, lt_ctl_val); + if (ret != EXYNOS_DP_SUCCESS) { + printf("DP set lt pattern failed\n"); + edp_info->lt_info.lt_status = + DP_LT_FAIL; + exynos_dp_equalizer_err_link(edp_info); + } + } + } + } else if (edp_info->lane_bw == DP_LANE_BW_2_70) { + ret = exynos_dp_reduce_link_rate(edp_info); + } else { + edp_info->lt_info.lt_status = DP_LT_FAIL; + exynos_dp_equalizer_err_link(edp_info); + } + + return ret; +} + +static unsigned int exynos_dp_sw_link_training(struct edp_device_info *edp_info) +{ + unsigned int ret = 0; + int training_finished; + + /* Turn off unnecessary lane */ + if (edp_info->lane_cnt == 1) + exynos_dp_set_analog_power_down(CH1_BLOCK, 1); + + training_finished = 0; + + edp_info->lt_info.lt_status = DP_LT_START; + + /* Process here */ + while (!training_finished) { + switch (edp_info->lt_info.lt_status) { + case DP_LT_START: + ret = exynos_dp_link_start(edp_info); + if (ret != EXYNOS_DP_SUCCESS) { + printf("DP LT:link start failed\n"); + return ret; + } + break; + case DP_LT_CR: + ret = exynos_dp_process_clock_recovery(edp_info); + if (ret != EXYNOS_DP_SUCCESS) { + printf("DP LT:clock recovery failed\n"); + return ret; + } + break; + case DP_LT_ET: + ret = exynos_dp_process_equalizer_training(edp_info); + if (ret != EXYNOS_DP_SUCCESS) { + printf("DP LT:equalizer training failed\n"); + return ret; + } + break; + case DP_LT_FINISHED: + training_finished = 1; + break; + case DP_LT_FAIL: + return -1; + } + } + + return ret; +} + +static unsigned int exynos_dp_set_link_train(struct edp_device_info *edp_info) +{ + unsigned int ret; + + exynos_dp_init_training(); + + ret = exynos_dp_sw_link_training(edp_info); + if (ret != EXYNOS_DP_SUCCESS) + printf("DP dp_sw_link_traning() failed\n"); + + return ret; +} + +static void exynos_dp_enable_scramble(unsigned int enable) +{ + unsigned char data; + + if (enable) { + exynos_dp_enable_scrambling(DP_ENABLE); + + exynos_dp_read_byte_from_dpcd(DPCD_TRAINING_PATTERN_SET, + &data); + exynos_dp_write_byte_to_dpcd(DPCD_TRAINING_PATTERN_SET, + (u8)(data & ~DPCD_SCRAMBLING_DISABLED)); + } else { + exynos_dp_enable_scrambling(DP_DISABLE); + exynos_dp_read_byte_from_dpcd(DPCD_TRAINING_PATTERN_SET, + &data); + exynos_dp_write_byte_to_dpcd(DPCD_TRAINING_PATTERN_SET, + (u8)(data | DPCD_SCRAMBLING_DISABLED)); + } +} + +static unsigned int exynos_dp_config_video(struct edp_device_info *edp_info) +{ + unsigned int ret = 0; + unsigned int retry_cnt; + + mdelay(1); + + if (edp_info->video_info.master_mode) { + printf("DP does not support master mode\n"); + return -ENODEV; + } else { + /* debug slave */ + exynos_dp_config_video_slave_mode(&edp_info->video_info); + } + + exynos_dp_set_video_color_format(&edp_info->video_info); + + if (edp_info->video_info.bist_mode) { + if (exynos_dp_config_video_bist(edp_info) != 0) + return -1; + } + + ret = exynos_dp_get_pll_lock_status(); + if (ret != PLL_LOCKED) { + printf("DP PLL is not locked yet\n"); + return -EIO; + } + + if (edp_info->video_info.master_mode == 0) { + retry_cnt = 10; + while (retry_cnt) { + ret = exynos_dp_is_slave_video_stream_clock_on(); + if (ret != EXYNOS_DP_SUCCESS) { + if (retry_cnt == 0) { + printf("DP stream_clock_on failed\n"); + return ret; + } + retry_cnt--; + mdelay(1); + } else + break; + } + } + + /* Set to use the register calculated M/N video */ + exynos_dp_set_video_cr_mn(CALCULATED_M, 0, 0); + + /* For video bist, Video timing must be generated by register */ + exynos_dp_set_video_timing_mode(VIDEO_TIMING_FROM_CAPTURE); + + /* Enable video bist */ + if (edp_info->video_info.bist_pattern != COLOR_RAMP && + edp_info->video_info.bist_pattern != BALCK_WHITE_V_LINES && + edp_info->video_info.bist_pattern != COLOR_SQUARE) + exynos_dp_enable_video_bist(edp_info->video_info.bist_mode); + else + exynos_dp_enable_video_bist(DP_DISABLE); + + /* Disable video mute */ + exynos_dp_enable_video_mute(DP_DISABLE); + + /* Configure video Master or Slave mode */ + exynos_dp_enable_video_master(edp_info->video_info.master_mode); + + /* Enable video */ + exynos_dp_start_video(); + + if (edp_info->video_info.master_mode == 0) { + retry_cnt = 100; + while (retry_cnt) { + ret = exynos_dp_is_video_stream_on(); + if (ret != EXYNOS_DP_SUCCESS) { + if (retry_cnt == 0) { + printf("DP Timeout of video stream\n"); + return ret; + } + retry_cnt--; + mdelay(5); + } else + break; + } + } + + return ret; +} + +unsigned int exynos_init_dp(void) +{ + unsigned int ret; + struct edp_device_info *edp_info; + struct edp_disp_info disp_info; + + edp_info = kzalloc(sizeof(struct edp_device_info), GFP_KERNEL); + if (!edp_info) { + debug("failed to allocate edp device object.\n"); + return -EFAULT; + } + + edp_info = dp_pd->edp_dev_info; + if (edp_info == NULL) { + debug("failed to get edp_info data.\n"); + return -EFAULT; + } + disp_info = edp_info->disp_info; + + exynos_dp_disp_info(&edp_info->disp_info); + + if (dp_pd->phy_enable) + dp_pd->phy_enable(1); + + ret = exynos_dp_init_dp(); + if (ret != EXYNOS_DP_SUCCESS) { + printf("DP exynos_dp_init_dp() failed\n"); + return ret; + } + + ret = exynos_dp_handle_edid(edp_info); + if (ret != EXYNOS_DP_SUCCESS) { + printf("EDP handle_edid fail\n"); + return ret; + } + + ret = exynos_dp_set_link_train(edp_info); + if (ret != EXYNOS_DP_SUCCESS) { + printf("DP link training fail\n"); + return ret; + } + + exynos_dp_enable_scramble(DP_ENABLE); + exynos_dp_enable_rx_to_enhanced_mode(DP_ENABLE); + exynos_dp_enable_enhanced_mode(DP_ENABLE); + + exynos_dp_set_link_bandwidth(edp_info->lane_bw); + exynos_dp_set_lane_count(edp_info->lane_cnt); + + exynos_dp_init_video(); + ret = exynos_dp_config_video(edp_info); + if (ret != EXYNOS_DP_SUCCESS) { + printf("Exynos DP init failed\n"); + return ret; + } + + printf("Exynos DP init done\n"); + + return ret; +} + +void exynos_set_dp_platform_data(struct exynos_dp_platform_data *pd) +{ + if (pd == NULL) { + debug("pd is NULL\n"); + return; + } + + dp_pd = pd; +} diff --git a/drivers/video/exynos_dp_lowlevel.c b/drivers/video/exynos_dp_lowlevel.c new file mode 100644 index 0000000000..7b54c8084c --- /dev/null +++ b/drivers/video/exynos_dp_lowlevel.c @@ -0,0 +1,1291 @@ +/* + * Copyright (C) 2012 Samsung Electronics + * + * Author: Donghwa Lee <dh09.lee@samsung.com> + * + * 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. + * + * 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, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <config.h> +#include <common.h> +#include <linux/err.h> +#include <asm/arch/cpu.h> +#include <asm/arch/dp_info.h> +#include <asm/arch/dp.h> + +static void exynos_dp_enable_video_input(unsigned int enable) +{ + unsigned int reg; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + reg = readl(&dp_regs->video_ctl1); + reg &= ~VIDEO_EN_MASK; + + /* enable video input*/ + if (enable) + reg |= VIDEO_EN_MASK; + + writel(reg, &dp_regs->video_ctl1); + + return; +} + +void exynos_dp_enable_video_bist(unsigned int enable) +{ + /*enable video bist*/ + unsigned int reg; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + reg = readl(&dp_regs->video_ctl4); + reg &= ~VIDEO_BIST_MASK; + + /*enable video bist*/ + if (enable) + reg |= VIDEO_BIST_MASK; + + writel(reg, &dp_regs->video_ctl4); + + return; +} + +void exynos_dp_enable_video_mute(unsigned int enable) +{ + unsigned int reg; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + reg = readl(&dp_regs->video_ctl1); + reg &= ~(VIDEO_MUTE_MASK); + if (enable) + reg |= VIDEO_MUTE_MASK; + + writel(reg, &dp_regs->video_ctl1); + + return; +} + + +static void exynos_dp_init_analog_param(void) +{ + unsigned int reg; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + /* + * Set termination + * Normal bandgap, Normal swing, Tx terminal registor 61 ohm + * 24M Phy clock, TX digital logic power is 100:1.0625V + */ + reg = SEL_BG_NEW_BANDGAP | TX_TERMINAL_CTRL_61_OHM | + SWING_A_30PER_G_NORMAL; + writel(reg, &dp_regs->analog_ctl1); + + reg = SEL_24M | TX_DVDD_BIT_1_0625V; + writel(reg, &dp_regs->analog_ctl2); + + /* + * Set power source for internal clk driver to 1.0625v. + * Select current reference of TX driver current to 00:Ipp/2+Ic/2. + * Set VCO range of PLL +- 0uA + */ + reg = DRIVE_DVDD_BIT_1_0625V | SEL_CURRENT_DEFAULT | VCO_BIT_000_MICRO; + writel(reg, &dp_regs->analog_ctl3); + + /* + * Set AUX TX terminal resistor to 102 ohm + * Set AUX channel amplitude control + */ + reg = PD_RING_OSC | AUX_TERMINAL_CTRL_52_OHM | TX_CUR1_2X | TX_CUR_4_MA; + writel(reg, &dp_regs->pll_filter_ctl1); + + /* + * PLL loop filter bandwidth + * For 2.7Gbps: 175KHz, For 1.62Gbps: 234KHz + * PLL digital power select: 1.2500V + */ + reg = CH3_AMP_0_MV | CH2_AMP_0_MV | CH1_AMP_0_MV | CH0_AMP_0_MV; + + writel(reg, &dp_regs->amp_tuning_ctl); + + /* + * PLL loop filter bandwidth + * For 2.7Gbps: 175KHz, For 1.62Gbps: 234KHz + * PLL digital power select: 1.1250V + */ + reg = DP_PLL_LOOP_BIT_DEFAULT | DP_PLL_REF_BIT_1_1250V; + writel(reg, &dp_regs->pll_ctl); +} + +static void exynos_dp_init_interrupt(void) +{ + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + /* Set interrupt registers to initial states */ + + /* + * Disable interrupt + * INT pin assertion polarity. It must be configured + * correctly according to ICU setting. + * 1 = assert high, 0 = assert low + */ + writel(INT_POL, &dp_regs->int_ctl); + + /* Clear pending regisers */ + writel(0xff, &dp_regs->common_int_sta1); + writel(0xff, &dp_regs->common_int_sta2); + writel(0xff, &dp_regs->common_int_sta3); + writel(0xff, &dp_regs->common_int_sta4); + writel(0xff, &dp_regs->int_sta); + + /* 0:mask,1: unmask */ + writel(0x00, &dp_regs->int_sta_mask1); + writel(0x00, &dp_regs->int_sta_mask2); + writel(0x00, &dp_regs->int_sta_mask3); + writel(0x00, &dp_regs->int_sta_mask4); + writel(0x00, &dp_regs->int_sta_mask); +} + +void exynos_dp_reset(void) +{ + unsigned int reg_func_1; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + /*dp tx sw reset*/ + writel(RESET_DP_TX, &dp_regs->tx_sw_reset); + + exynos_dp_enable_video_input(DP_DISABLE); + exynos_dp_enable_video_bist(DP_DISABLE); + exynos_dp_enable_video_mute(DP_DISABLE); + + /* software reset */ + reg_func_1 = MASTER_VID_FUNC_EN_N | SLAVE_VID_FUNC_EN_N | + AUD_FIFO_FUNC_EN_N | AUD_FUNC_EN_N | + HDCP_FUNC_EN_N | SW_FUNC_EN_N; + + writel(reg_func_1, &dp_regs->func_en1); + writel(reg_func_1, &dp_regs->func_en2); + + mdelay(1); + + exynos_dp_init_analog_param(); + exynos_dp_init_interrupt(); + + return; +} + +void exynos_dp_enable_sw_func(unsigned int enable) +{ + unsigned int reg; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + reg = readl(&dp_regs->func_en1); + reg &= ~(SW_FUNC_EN_N); + + if (!enable) + reg |= SW_FUNC_EN_N; + + writel(reg, &dp_regs->func_en1); + + return; +} + +unsigned int exynos_dp_set_analog_power_down(unsigned int block, u32 enable) +{ + unsigned int reg; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + reg = readl(&dp_regs->phy_pd); + switch (block) { + case AUX_BLOCK: + reg &= ~(AUX_PD); + if (enable) + reg |= AUX_PD; + break; + case CH0_BLOCK: + reg &= ~(CH0_PD); + if (enable) + reg |= CH0_PD; + break; + case CH1_BLOCK: + reg &= ~(CH1_PD); + if (enable) + reg |= CH1_PD; + break; + case CH2_BLOCK: + reg &= ~(CH2_PD); + if (enable) + reg |= CH2_PD; + break; + case CH3_BLOCK: + reg &= ~(CH3_PD); + if (enable) + reg |= CH3_PD; + break; + case ANALOG_TOTAL: + reg &= ~PHY_PD; + if (enable) + reg |= PHY_PD; + break; + case POWER_ALL: + reg &= ~(PHY_PD | AUX_PD | CH0_PD | CH1_PD | CH2_PD | + CH3_PD); + if (enable) + reg |= (PHY_PD | AUX_PD | CH0_PD | CH1_PD | + CH2_PD | CH3_PD); + break; + default: + printf("DP undefined block number : %d\n", block); + return -1; + } + + writel(reg, &dp_regs->phy_pd); + + return 0; +} + +unsigned int exynos_dp_get_pll_lock_status(void) +{ + unsigned int reg; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + reg = readl(&dp_regs->debug_ctl); + + if (reg & PLL_LOCK) + return PLL_LOCKED; + else + return PLL_UNLOCKED; +} + +static void exynos_dp_set_pll_power(unsigned int enable) +{ + unsigned int reg; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + reg = readl(&dp_regs->pll_ctl); + reg &= ~(DP_PLL_PD); + + if (!enable) + reg |= DP_PLL_PD; + + writel(reg, &dp_regs->pll_ctl); +} + +int exynos_dp_init_analog_func(void) +{ + int ret = EXYNOS_DP_SUCCESS; + unsigned int retry_cnt = 10; + unsigned int reg; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + /*Power On All Analog block */ + exynos_dp_set_analog_power_down(POWER_ALL, DP_DISABLE); + + reg = PLL_LOCK_CHG; + writel(reg, &dp_regs->common_int_sta1); + + reg = readl(&dp_regs->debug_ctl); + reg &= ~(F_PLL_LOCK | PLL_LOCK_CTRL); + writel(reg, &dp_regs->debug_ctl); + + /*Assert DP PLL Reset*/ + reg = readl(&dp_regs->pll_ctl); + reg |= DP_PLL_RESET; + writel(reg, &dp_regs->pll_ctl); + + mdelay(1); + + /*Deassert DP PLL Reset*/ + reg = readl(&dp_regs->pll_ctl); + reg &= ~(DP_PLL_RESET); + writel(reg, &dp_regs->pll_ctl); + + exynos_dp_set_pll_power(DP_ENABLE); + + while (exynos_dp_get_pll_lock_status() == PLL_UNLOCKED) { + mdelay(1); + retry_cnt--; + if (retry_cnt == 0) { + printf("DP dp's pll lock failed : retry : %d\n", + retry_cnt); + return -EINVAL; + } + } + + debug("dp's pll lock success(%d)\n", retry_cnt); + + /* Enable Serdes FIFO function and Link symbol clock domain module */ + reg = readl(&dp_regs->func_en2); + reg &= ~(SERDES_FIFO_FUNC_EN_N | LS_CLK_DOMAIN_FUNC_EN_N + | AUX_FUNC_EN_N); + writel(reg, &dp_regs->func_en2); + + return ret; +} + +void exynos_dp_init_hpd(void) +{ + unsigned int reg; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + /* Clear interrupts releated to Hot Plug Dectect */ + reg = HOTPLUG_CHG | HPD_LOST | PLUG; + writel(reg, &dp_regs->common_int_sta4); + + reg = INT_HPD; + writel(reg, &dp_regs->int_sta); + + reg = readl(&dp_regs->sys_ctl3); + reg &= ~(F_HPD | HPD_CTRL); + writel(reg, &dp_regs->sys_ctl3); + + return; +} + +static inline void exynos_dp_reset_aux(void) +{ + unsigned int reg; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + /* Disable AUX channel module */ + reg = readl(&dp_regs->func_en2); + reg |= AUX_FUNC_EN_N; + writel(reg, &dp_regs->func_en2); + + return; +} + +void exynos_dp_init_aux(void) +{ + unsigned int reg; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + /* Clear inerrupts related to AUX channel */ + reg = RPLY_RECEIV | AUX_ERR; + writel(reg, &dp_regs->int_sta); + + exynos_dp_reset_aux(); + + /* Disable AUX transaction H/W retry */ + reg = AUX_BIT_PERIOD_EXPECTED_DELAY(3) | AUX_HW_RETRY_COUNT_SEL(3)| + AUX_HW_RETRY_INTERVAL_600_MICROSECONDS; + writel(reg, &dp_regs->aux_hw_retry_ctl); + + /* Receive AUX Channel DEFER commands equal to DEFFER_COUNT*64 */ + reg = DEFER_CTRL_EN | DEFER_COUNT(1); + writel(reg, &dp_regs->aux_ch_defer_ctl); + + /* Enable AUX channel module */ + reg = readl(&dp_regs->func_en2); + reg &= ~AUX_FUNC_EN_N; + writel(reg, &dp_regs->func_en2); + + return; +} + +void exynos_dp_config_interrupt(void) +{ + unsigned int reg; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + /* 0: mask, 1: unmask */ + reg = COMMON_INT_MASK_1; + writel(reg, &dp_regs->common_int_mask1); + + reg = COMMON_INT_MASK_2; + writel(reg, &dp_regs->common_int_mask2); + + reg = COMMON_INT_MASK_3; + writel(reg, &dp_regs->common_int_mask3); + + reg = COMMON_INT_MASK_4; + writel(reg, &dp_regs->common_int_mask4); + + reg = INT_STA_MASK; + writel(reg, &dp_regs->int_sta_mask); + + return; +} + +unsigned int exynos_dp_get_plug_in_status(void) +{ + unsigned int reg; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + reg = readl(&dp_regs->sys_ctl3); + if (reg & HPD_STATUS) + return 0; + + return -1; +} + +unsigned int exynos_dp_detect_hpd(void) +{ + int timeout_loop = DP_TIMEOUT_LOOP_COUNT; + + mdelay(2); + + while (exynos_dp_get_plug_in_status() != 0) { + if (timeout_loop == 0) + return -EINVAL; + mdelay(10); + timeout_loop--; + } + + return EXYNOS_DP_SUCCESS; +} + +unsigned int exynos_dp_start_aux_transaction(void) +{ + unsigned int reg; + unsigned int ret = 0; + unsigned int retry_cnt; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + /* Enable AUX CH operation */ + reg = readl(&dp_regs->aux_ch_ctl2); + reg |= AUX_EN; + writel(reg, &dp_regs->aux_ch_ctl2); + + retry_cnt = 10; + while (retry_cnt) { + reg = readl(&dp_regs->int_sta); + if (!(reg & RPLY_RECEIV)) { + if (retry_cnt == 0) { + printf("DP Reply Timeout!!\n"); + ret = -EAGAIN; + return ret; + } + mdelay(1); + retry_cnt--; + } else + break; + } + + /* Clear interrupt source for AUX CH command reply */ + writel(reg, &dp_regs->int_sta); + + /* Clear interrupt source for AUX CH access error */ + reg = readl(&dp_regs->int_sta); + if (reg & AUX_ERR) { + printf("DP Aux Access Error\n"); + writel(AUX_ERR, &dp_regs->int_sta); + ret = -EAGAIN; + return ret; + } + + /* Check AUX CH error access status */ + reg = readl(&dp_regs->aux_ch_sta); + if ((reg & AUX_STATUS_MASK) != 0) { + debug("DP AUX CH error happens: %x\n", reg & AUX_STATUS_MASK); + ret = -EAGAIN; + return ret; + } + + return EXYNOS_DP_SUCCESS; +} + +unsigned int exynos_dp_write_byte_to_dpcd(unsigned int reg_addr, + unsigned char data) +{ + unsigned int reg, ret; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + /* Clear AUX CH data buffer */ + reg = BUF_CLR; + writel(reg, &dp_regs->buffer_data_ctl); + + /* Select DPCD device address */ + reg = AUX_ADDR_7_0(reg_addr); + writel(reg, &dp_regs->aux_addr_7_0); + reg = AUX_ADDR_15_8(reg_addr); + writel(reg, &dp_regs->aux_addr_15_8); + reg = AUX_ADDR_19_16(reg_addr); + writel(reg, &dp_regs->aux_addr_19_16); + + /* Write data buffer */ + reg = (unsigned int)data; + writel(reg, &dp_regs->buf_data0); + + /* + * Set DisplayPort transaction and write 1 byte + * If bit 3 is 1, DisplayPort transaction. + * If Bit 3 is 0, I2C transaction. + */ + reg = AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_WRITE; + writel(reg, &dp_regs->aux_ch_ctl1); + + /* Start AUX transaction */ + ret = exynos_dp_start_aux_transaction(); + if (ret != EXYNOS_DP_SUCCESS) { + printf("DP Aux transaction failed\n"); + return ret; + } + + return ret; +} + +unsigned int exynos_dp_read_byte_from_dpcd(unsigned int reg_addr, + unsigned char *data) +{ + unsigned int reg; + int retval; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + /* Clear AUX CH data buffer */ + reg = BUF_CLR; + writel(reg, &dp_regs->buffer_data_ctl); + + /* Select DPCD device address */ + reg = AUX_ADDR_7_0(reg_addr); + writel(reg, &dp_regs->aux_addr_7_0); + reg = AUX_ADDR_15_8(reg_addr); + writel(reg, &dp_regs->aux_addr_15_8); + reg = AUX_ADDR_19_16(reg_addr); + writel(reg, &dp_regs->aux_addr_19_16); + + /* + * Set DisplayPort transaction and read 1 byte + * If bit 3 is 1, DisplayPort transaction. + * If Bit 3 is 0, I2C transaction. + */ + reg = AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_READ; + writel(reg, &dp_regs->aux_ch_ctl1); + + /* Start AUX transaction */ + retval = exynos_dp_start_aux_transaction(); + if (!retval) + debug("DP Aux Transaction fail!\n"); + + /* Read data buffer */ + reg = readl(&dp_regs->buf_data0); + *data = (unsigned char)(reg & 0xff); + + return retval; +} + +unsigned int exynos_dp_write_bytes_to_dpcd(unsigned int reg_addr, + unsigned int count, + unsigned char data[]) +{ + unsigned int reg; + unsigned int start_offset; + unsigned int cur_data_count; + unsigned int cur_data_idx; + unsigned int retry_cnt; + unsigned int ret = 0; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + /* Clear AUX CH data buffer */ + reg = BUF_CLR; + writel(reg, &dp_regs->buffer_data_ctl); + + start_offset = 0; + while (start_offset < count) { + /* Buffer size of AUX CH is 16 * 4bytes */ + if ((count - start_offset) > 16) + cur_data_count = 16; + else + cur_data_count = count - start_offset; + + retry_cnt = 5; + while (retry_cnt) { + /* Select DPCD device address */ + reg = AUX_ADDR_7_0(reg_addr + start_offset); + writel(reg, &dp_regs->aux_addr_7_0); + reg = AUX_ADDR_15_8(reg_addr + start_offset); + writel(reg, &dp_regs->aux_addr_15_8); + reg = AUX_ADDR_19_16(reg_addr + start_offset); + writel(reg, &dp_regs->aux_addr_19_16); + + for (cur_data_idx = 0; cur_data_idx < cur_data_count; + cur_data_idx++) { + reg = data[start_offset + cur_data_idx]; + writel(reg, (unsigned int)&dp_regs->buf_data0 + + (4 * cur_data_idx)); + } + /* + * Set DisplayPort transaction and write + * If bit 3 is 1, DisplayPort transaction. + * If Bit 3 is 0, I2C transaction. + */ + reg = AUX_LENGTH(cur_data_count) | + AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_WRITE; + writel(reg, &dp_regs->aux_ch_ctl1); + + /* Start AUX transaction */ + ret = exynos_dp_start_aux_transaction(); + if (ret != EXYNOS_DP_SUCCESS) { + if (retry_cnt == 0) { + printf("DP Aux Transaction failed\n"); + return ret; + } + retry_cnt--; + } else + break; + } + start_offset += cur_data_count; + } + + return ret; +} + +unsigned int exynos_dp_read_bytes_from_dpcd(unsigned int reg_addr, + unsigned int count, + unsigned char data[]) +{ + unsigned int reg; + unsigned int start_offset; + unsigned int cur_data_count; + unsigned int cur_data_idx; + unsigned int retry_cnt; + unsigned int ret = 0; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + /* Clear AUX CH data buffer */ + reg = BUF_CLR; + writel(reg, &dp_regs->buffer_data_ctl); + + start_offset = 0; + while (start_offset < count) { + /* Buffer size of AUX CH is 16 * 4bytes */ + if ((count - start_offset) > 16) + cur_data_count = 16; + else + cur_data_count = count - start_offset; + + retry_cnt = 5; + while (retry_cnt) { + /* Select DPCD device address */ + reg = AUX_ADDR_7_0(reg_addr + start_offset); + writel(reg, &dp_regs->aux_addr_7_0); + reg = AUX_ADDR_15_8(reg_addr + start_offset); + writel(reg, &dp_regs->aux_addr_15_8); + reg = AUX_ADDR_19_16(reg_addr + start_offset); + writel(reg, &dp_regs->aux_addr_19_16); + /* + * Set DisplayPort transaction and read + * If bit 3 is 1, DisplayPort transaction. + * If Bit 3 is 0, I2C transaction. + */ + reg = AUX_LENGTH(cur_data_count) | + AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_READ; + writel(reg, &dp_regs->aux_ch_ctl1); + + /* Start AUX transaction */ + ret = exynos_dp_start_aux_transaction(); + if (ret != EXYNOS_DP_SUCCESS) { + if (retry_cnt == 0) { + printf("DP Aux Transaction failed\n"); + return ret; + } + retry_cnt--; + } else + break; + } + + for (cur_data_idx = 0; cur_data_idx < cur_data_count; + cur_data_idx++) { + reg = readl((unsigned int)&dp_regs->buf_data0 + + 4 * cur_data_idx); + data[start_offset + cur_data_idx] = (unsigned char)reg; + } + + start_offset += cur_data_count; + } + + return ret; +} + +int exynos_dp_select_i2c_device(unsigned int device_addr, + unsigned int reg_addr) +{ + unsigned int reg; + int retval; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + /* Set EDID device address */ + reg = device_addr; + writel(reg, &dp_regs->aux_addr_7_0); + writel(0x0, &dp_regs->aux_addr_15_8); + writel(0x0, &dp_regs->aux_addr_19_16); + + /* Set offset from base address of EDID device */ + writel(reg_addr, &dp_regs->buf_data0); + + /* + * Set I2C transaction and write address + * If bit 3 is 1, DisplayPort transaction. + * If Bit 3 is 0, I2C transaction. + */ + reg = AUX_TX_COMM_I2C_TRANSACTION | AUX_TX_COMM_MOT | + AUX_TX_COMM_WRITE; + writel(reg, &dp_regs->aux_ch_ctl1); + + /* Start AUX transaction */ + retval = exynos_dp_start_aux_transaction(); + if (retval != 0) + printf("%s: DP Aux Transaction fail!\n", __func__); + + return retval; +} + +int exynos_dp_read_byte_from_i2c(unsigned int device_addr, + unsigned int reg_addr, + unsigned int *data) +{ + unsigned int reg; + int i; + int retval; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + for (i = 0; i < 10; i++) { + /* Clear AUX CH data buffer */ + reg = BUF_CLR; + writel(reg, &dp_regs->buffer_data_ctl); + + /* Select EDID device */ + retval = exynos_dp_select_i2c_device(device_addr, reg_addr); + if (retval != 0) { + printf("DP Select EDID device fail. retry !\n"); + continue; + } + + /* + * Set I2C transaction and read data + * If bit 3 is 1, DisplayPort transaction. + * If Bit 3 is 0, I2C transaction. + */ + reg = AUX_TX_COMM_I2C_TRANSACTION | + AUX_TX_COMM_READ; + writel(reg, &dp_regs->aux_ch_ctl1); + + /* Start AUX transaction */ + retval = exynos_dp_start_aux_transaction(); + if (retval != EXYNOS_DP_SUCCESS) + printf("%s: DP Aux Transaction fail!\n", __func__); + } + + /* Read data */ + if (retval == 0) + *data = readl(&dp_regs->buf_data0); + + return retval; +} + +int exynos_dp_read_bytes_from_i2c(unsigned int device_addr, + unsigned int reg_addr, unsigned int count, unsigned char edid[]) +{ + unsigned int reg; + unsigned int i, j; + unsigned int cur_data_idx; + unsigned int defer = 0; + int retval = 0; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + for (i = 0; i < count; i += 16) { /* use 16 burst */ + for (j = 0; j < 100; j++) { + /* Clear AUX CH data buffer */ + reg = BUF_CLR; + writel(reg, &dp_regs->buffer_data_ctl); + + /* Set normal AUX CH command */ + reg = readl(&dp_regs->aux_ch_ctl2); + reg &= ~ADDR_ONLY; + writel(reg, &dp_regs->aux_ch_ctl2); + + /* + * If Rx sends defer, Tx sends only reads + * request without sending addres + */ + if (!defer) + retval = + exynos_dp_select_i2c_device(device_addr, + reg_addr + i); + else + defer = 0; + + if (retval == EXYNOS_DP_SUCCESS) { + /* + * Set I2C transaction and write data + * If bit 3 is 1, DisplayPort transaction. + * If Bit 3 is 0, I2C transaction. + */ + reg = AUX_LENGTH(16) | + AUX_TX_COMM_I2C_TRANSACTION | + AUX_TX_COMM_READ; + writel(reg, &dp_regs->aux_ch_ctl1); + + /* Start AUX transaction */ + retval = exynos_dp_start_aux_transaction(); + if (retval == 0) + break; + else + printf("DP Aux Transaction fail!\n"); + } + /* Check if Rx sends defer */ + reg = readl(&dp_regs->aux_rx_comm); + if (reg == AUX_RX_COMM_AUX_DEFER || + reg == AUX_RX_COMM_I2C_DEFER) { + printf("DP Defer: %d\n\n", reg); + defer = 1; + } + } + + for (cur_data_idx = 0; cur_data_idx < 16; cur_data_idx++) { + reg = readl((unsigned int)&dp_regs->buf_data0 + + 4 * cur_data_idx); + edid[i + cur_data_idx] = (unsigned char)reg; + } + } + + return retval; +} + +void exynos_dp_reset_macro(void) +{ + unsigned int reg; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + reg = readl(&dp_regs->phy_test); + reg |= MACRO_RST; + writel(reg, &dp_regs->phy_test); + + /* 10 us is the minimum Macro reset time. */ + mdelay(1); + + reg &= ~MACRO_RST; + writel(reg, &dp_regs->phy_test); +} + +void exynos_dp_set_link_bandwidth(unsigned char bwtype) +{ + unsigned int reg; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + reg = (unsigned int)bwtype; + + /* Set bandwidth to 2.7G or 1.62G */ + if ((bwtype == DP_LANE_BW_1_62) || (bwtype == DP_LANE_BW_2_70)) + writel(reg, &dp_regs->link_bw_set); +} + +unsigned char exynos_dp_get_link_bandwidth(void) +{ + unsigned char ret; + unsigned int reg; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + reg = readl(&dp_regs->link_bw_set); + ret = (unsigned char)reg; + + return ret; +} + +void exynos_dp_set_lane_count(unsigned char count) +{ + unsigned int reg; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + reg = (unsigned int)count; + + if ((count == DP_LANE_CNT_1) || (count == DP_LANE_CNT_2) || + (count == DP_LANE_CNT_4)) + writel(reg, &dp_regs->lane_count_set); +} + +unsigned int exynos_dp_get_lane_count(void) +{ + unsigned int reg; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + reg = readl(&dp_regs->lane_count_set); + + return reg; +} + +unsigned char exynos_dp_get_lanex_pre_emphasis(unsigned char lanecnt) +{ + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + unsigned int reg_list[DP_LANE_CNT_4] = { + (unsigned int)&dp_regs->ln0_link_training_ctl, + (unsigned int)&dp_regs->ln1_link_training_ctl, + (unsigned int)&dp_regs->ln2_link_training_ctl, + (unsigned int)&dp_regs->ln3_link_training_ctl, + }; + + return readl(reg_list[lanecnt]); +} + +void exynos_dp_set_lanex_pre_emphasis(unsigned char request_val, + unsigned char lanecnt) +{ + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + unsigned int reg_list[DP_LANE_CNT_4] = { + (unsigned int)&dp_regs->ln0_link_training_ctl, + (unsigned int)&dp_regs->ln1_link_training_ctl, + (unsigned int)&dp_regs->ln2_link_training_ctl, + (unsigned int)&dp_regs->ln3_link_training_ctl, + }; + + writel(request_val, reg_list[lanecnt]); +} + +void exynos_dp_set_lane_pre_emphasis(unsigned int level, unsigned char lanecnt) +{ + unsigned char i; + unsigned int reg; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + unsigned int reg_list[DP_LANE_CNT_4] = { + (unsigned int)&dp_regs->ln0_link_training_ctl, + (unsigned int)&dp_regs->ln1_link_training_ctl, + (unsigned int)&dp_regs->ln2_link_training_ctl, + (unsigned int)&dp_regs->ln3_link_training_ctl, + }; + unsigned int reg_shift[DP_LANE_CNT_4] = { + PRE_EMPHASIS_SET_0_SHIFT, + PRE_EMPHASIS_SET_1_SHIFT, + PRE_EMPHASIS_SET_2_SHIFT, + PRE_EMPHASIS_SET_3_SHIFT + }; + + for (i = 0; i < lanecnt; i++) { + reg = level << reg_shift[i]; + writel(reg, reg_list[i]); + } +} + +void exynos_dp_set_training_pattern(unsigned int pattern) +{ + unsigned int reg = 0; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + switch (pattern) { + case PRBS7: + reg = SCRAMBLING_ENABLE | LINK_QUAL_PATTERN_SET_PRBS7; + break; + case D10_2: + reg = SCRAMBLING_ENABLE | LINK_QUAL_PATTERN_SET_D10_2; + break; + case TRAINING_PTN1: + reg = SCRAMBLING_DISABLE | SW_TRAINING_PATTERN_SET_PTN1; + break; + case TRAINING_PTN2: + reg = SCRAMBLING_DISABLE | SW_TRAINING_PATTERN_SET_PTN2; + break; + case DP_NONE: + reg = SCRAMBLING_ENABLE | LINK_QUAL_PATTERN_SET_DISABLE | + SW_TRAINING_PATTERN_SET_NORMAL; + break; + default: + break; + } + + writel(reg, &dp_regs->training_ptn_set); +} + +void exynos_dp_enable_enhanced_mode(unsigned char enable) +{ + unsigned int reg; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + reg = readl(&dp_regs->sys_ctl4); + reg &= ~ENHANCED; + + if (enable) + reg |= ENHANCED; + + writel(reg, &dp_regs->sys_ctl4); +} + +void exynos_dp_enable_scrambling(unsigned int enable) +{ + unsigned int reg; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + reg = readl(&dp_regs->training_ptn_set); + reg &= ~(SCRAMBLING_DISABLE); + + if (!enable) + reg |= SCRAMBLING_DISABLE; + + writel(reg, &dp_regs->training_ptn_set); +} + +int exynos_dp_init_video(void) +{ + unsigned int reg; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + /* Clear VID_CLK_CHG[1] and VID_FORMAT_CHG[3] and VSYNC_DET[7] */ + reg = VSYNC_DET | VID_FORMAT_CHG | VID_CLK_CHG; + writel(reg, &dp_regs->common_int_sta1); + + /* I_STRM__CLK detect : DE_CTL : Auto detect */ + reg &= ~DET_CTRL; + writel(reg, &dp_regs->sys_ctl1); + + return 0; +} + +void exynos_dp_config_video_slave_mode(struct edp_video_info *video_info) +{ + unsigned int reg; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + /* Video Slave mode setting */ + reg = readl(&dp_regs->func_en1); + reg &= ~(MASTER_VID_FUNC_EN_N|SLAVE_VID_FUNC_EN_N); + reg |= MASTER_VID_FUNC_EN_N; + writel(reg, &dp_regs->func_en1); + + /* Configure Interlaced for slave mode video */ + reg = readl(&dp_regs->video_ctl10); + reg &= ~INTERACE_SCAN_CFG; + reg |= (video_info->interlaced << INTERACE_SCAN_CFG_SHIFT); + writel(reg, &dp_regs->video_ctl10); + + /* Configure V sync polarity for slave mode video */ + reg = readl(&dp_regs->video_ctl10); + reg &= ~VSYNC_POLARITY_CFG; + reg |= (video_info->v_sync_polarity << V_S_POLARITY_CFG_SHIFT); + writel(reg, &dp_regs->video_ctl10); + + /* Configure H sync polarity for slave mode video */ + reg = readl(&dp_regs->video_ctl10); + reg &= ~HSYNC_POLARITY_CFG; + reg |= (video_info->h_sync_polarity << H_S_POLARITY_CFG_SHIFT); + writel(reg, &dp_regs->video_ctl10); + + /*Set video mode to slave mode */ + reg = AUDIO_MODE_SPDIF_MODE | VIDEO_MODE_SLAVE_MODE; + writel(reg, &dp_regs->soc_general_ctl); +} + +void exynos_dp_set_video_color_format(struct edp_video_info *video_info) +{ + unsigned int reg; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + /* Configure the input color depth, color space, dynamic range */ + reg = (video_info->dynamic_range << IN_D_RANGE_SHIFT) | + (video_info->color_depth << IN_BPC_SHIFT) | + (video_info->color_space << IN_COLOR_F_SHIFT); + writel(reg, &dp_regs->video_ctl2); + + /* Set Input Color YCbCr Coefficients to ITU601 or ITU709 */ + reg = readl(&dp_regs->video_ctl3); + reg &= ~IN_YC_COEFFI_MASK; + if (video_info->ycbcr_coeff) + reg |= IN_YC_COEFFI_ITU709; + else + reg |= IN_YC_COEFFI_ITU601; + writel(reg, &dp_regs->video_ctl3); +} + +int exynos_dp_config_video_bist(struct edp_device_info *edp_info) +{ + unsigned int reg; + unsigned int bist_type = 0; + struct edp_video_info video_info = edp_info->video_info; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + /* For master mode, you don't need to set the video format */ + if (video_info.master_mode == 0) { + writel(TOTAL_LINE_CFG_L(edp_info->disp_info.v_total), + &dp_regs->total_ln_cfg_l); + writel(TOTAL_LINE_CFG_H(edp_info->disp_info.v_total), + &dp_regs->total_ln_cfg_h); + writel(ACTIVE_LINE_CFG_L(edp_info->disp_info.v_res), + &dp_regs->active_ln_cfg_l); + writel(ACTIVE_LINE_CFG_H(edp_info->disp_info.v_res), + &dp_regs->active_ln_cfg_h); + writel(edp_info->disp_info.v_sync_width, + &dp_regs->vsw_cfg); + writel(edp_info->disp_info.v_back_porch, + &dp_regs->vbp_cfg); + writel(edp_info->disp_info.v_front_porch, + &dp_regs->vfp_cfg); + + writel(TOTAL_PIXEL_CFG_L(edp_info->disp_info.h_total), + &dp_regs->total_pix_cfg_l); + writel(TOTAL_PIXEL_CFG_H(edp_info->disp_info.h_total), + &dp_regs->total_pix_cfg_h); + writel(ACTIVE_PIXEL_CFG_L(edp_info->disp_info.h_res), + &dp_regs->active_pix_cfg_l); + writel(ACTIVE_PIXEL_CFG_H(edp_info->disp_info.h_res), + &dp_regs->active_pix_cfg_h); + writel(H_F_PORCH_CFG_L(edp_info->disp_info.h_front_porch), + &dp_regs->hfp_cfg_l); + writel(H_F_PORCH_CFG_H(edp_info->disp_info.h_front_porch), + &dp_regs->hfp_cfg_h); + writel(H_SYNC_PORCH_CFG_L(edp_info->disp_info.h_sync_width), + &dp_regs->hsw_cfg_l); + writel(H_SYNC_PORCH_CFG_H(edp_info->disp_info.h_sync_width), + &dp_regs->hsw_cfg_h); + writel(H_B_PORCH_CFG_L(edp_info->disp_info.h_back_porch), + &dp_regs->hbp_cfg_l); + writel(H_B_PORCH_CFG_H(edp_info->disp_info.h_back_porch), + &dp_regs->hbp_cfg_h); + + /* + * Set SLAVE_I_SCAN_CFG[2], VSYNC_P_CFG[1], + * HSYNC_P_CFG[0] properly + */ + reg = (video_info.interlaced << INTERACE_SCAN_CFG_SHIFT | + video_info.v_sync_polarity << V_S_POLARITY_CFG_SHIFT | + video_info.h_sync_polarity << H_S_POLARITY_CFG_SHIFT); + writel(reg, &dp_regs->video_ctl10); + } + + /* BIST color bar width set--set to each bar is 32 pixel width */ + switch (video_info.bist_pattern) { + case COLORBAR_32: + bist_type = BIST_WIDTH_BAR_32_PIXEL | + BIST_TYPE_COLOR_BAR; + break; + case COLORBAR_64: + bist_type = BIST_WIDTH_BAR_64_PIXEL | + BIST_TYPE_COLOR_BAR; + break; + case WHITE_GRAY_BALCKBAR_32: + bist_type = BIST_WIDTH_BAR_32_PIXEL | + BIST_TYPE_WHITE_GRAY_BLACK_BAR; + break; + case WHITE_GRAY_BALCKBAR_64: + bist_type = BIST_WIDTH_BAR_64_PIXEL | + BIST_TYPE_WHITE_GRAY_BLACK_BAR; + break; + case MOBILE_WHITEBAR_32: + bist_type = BIST_WIDTH_BAR_32_PIXEL | + BIST_TYPE_MOBILE_WHITE_BAR; + break; + case MOBILE_WHITEBAR_64: + bist_type = BIST_WIDTH_BAR_64_PIXEL | + BIST_TYPE_MOBILE_WHITE_BAR; + break; + default: + return -1; + } + + reg = bist_type; + writel(reg, &dp_regs->video_ctl4); + + return 0; +} + +unsigned int exynos_dp_is_slave_video_stream_clock_on(void) +{ + unsigned int reg; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + /* Update Video stream clk detect status */ + reg = readl(&dp_regs->sys_ctl1); + writel(reg, &dp_regs->sys_ctl1); + + reg = readl(&dp_regs->sys_ctl1); + + if (!(reg & DET_STA)) { + debug("DP Input stream clock not detected.\n"); + return -EIO; + } + + return EXYNOS_DP_SUCCESS; +} + +void exynos_dp_set_video_cr_mn(unsigned int type, unsigned int m_value, + unsigned int n_value) +{ + unsigned int reg; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + if (type == REGISTER_M) { + reg = readl(&dp_regs->sys_ctl4); + reg |= FIX_M_VID; + writel(reg, &dp_regs->sys_ctl4); + reg = M_VID0_CFG(m_value); + writel(reg, &dp_regs->m_vid0); + reg = M_VID1_CFG(m_value); + writel(reg, &dp_regs->m_vid1); + reg = M_VID2_CFG(m_value); + writel(reg, &dp_regs->m_vid2); + + reg = N_VID0_CFG(n_value); + writel(reg, &dp_regs->n_vid0); + reg = N_VID1_CFG(n_value); + writel(reg, &dp_regs->n_vid1); + reg = N_VID2_CFG(n_value); + writel(reg, &dp_regs->n_vid2); + } else { + reg = readl(&dp_regs->sys_ctl4); + reg &= ~FIX_M_VID; + writel(reg, &dp_regs->sys_ctl4); + } +} + +void exynos_dp_set_video_timing_mode(unsigned int type) +{ + unsigned int reg; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + reg = readl(&dp_regs->video_ctl10); + reg &= ~FORMAT_SEL; + + if (type != VIDEO_TIMING_FROM_CAPTURE) + reg |= FORMAT_SEL; + + writel(reg, &dp_regs->video_ctl10); +} + +void exynos_dp_enable_video_master(unsigned int enable) +{ + unsigned int reg; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + reg = readl(&dp_regs->soc_general_ctl); + if (enable) { + reg &= ~VIDEO_MODE_MASK; + reg |= VIDEO_MASTER_MODE_EN | VIDEO_MODE_MASTER_MODE; + } else { + reg &= ~VIDEO_MODE_MASK; + reg |= VIDEO_MODE_SLAVE_MODE; + } + + writel(reg, &dp_regs->soc_general_ctl); +} + +void exynos_dp_start_video(void) +{ + unsigned int reg; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + /* Enable Video input and disable Mute */ + reg = readl(&dp_regs->video_ctl1); + reg |= VIDEO_EN; + writel(reg, &dp_regs->video_ctl1); +} + +unsigned int exynos_dp_is_video_stream_on(void) +{ + unsigned int reg; + struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp(); + + /* Update STRM_VALID */ + reg = readl(&dp_regs->sys_ctl3); + writel(reg, &dp_regs->sys_ctl3); + + reg = readl(&dp_regs->sys_ctl3); + if (!(reg & STRM_VALID)) + return -EIO; + + return EXYNOS_DP_SUCCESS; +} diff --git a/drivers/video/exynos_dp_lowlevel.h b/drivers/video/exynos_dp_lowlevel.h new file mode 100644 index 0000000000..a041a7ab50 --- /dev/null +++ b/drivers/video/exynos_dp_lowlevel.h @@ -0,0 +1,80 @@ +/* + * Copyright (C) 2012 Samsung Electronics + * + * Author: Donghwa Lee <dh09.lee@samsung.com> + * + * 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. + * + * 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, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#ifndef _EXYNOS_EDP_LOWLEVEL_H +#define _EXYNOS_EDP_LOWLEVEL_H + +void exynos_dp_enable_video_bist(unsigned int enable); +void exynos_dp_enable_video_mute(unsigned int enable); +void exynos_dp_reset(void); +void exynos_dp_enable_sw_func(unsigned int enable); +unsigned int exynos_dp_set_analog_power_down(unsigned int block, u32 enable); +unsigned int exynos_dp_get_pll_lock_status(void); +int exynos_dp_init_analog_func(void); +void exynos_dp_init_hpd(void); +void exynos_dp_init_aux(void); +void exynos_dp_config_interrupt(void); +unsigned int exynos_dp_get_plug_in_status(void); +unsigned int exynos_dp_detect_hpd(void); +unsigned int exynos_dp_start_aux_transaction(void); +unsigned int exynos_dp_write_byte_to_dpcd(unsigned int reg_addr, + unsigned char data); +unsigned int exynos_dp_read_byte_from_dpcd(unsigned int reg_addr, + unsigned char *data); +unsigned int exynos_dp_write_bytes_to_dpcd(unsigned int reg_addr, + unsigned int count, + unsigned char data[]); +unsigned int exynos_dp_read_bytes_from_dpcd( unsigned int reg_addr, + unsigned int count, + unsigned char data[]); +int exynos_dp_select_i2c_device( unsigned int device_addr, + unsigned int reg_addr); +int exynos_dp_read_byte_from_i2c(unsigned int device_addr, + unsigned int reg_addr, unsigned int *data); +int exynos_dp_read_bytes_from_i2c(unsigned int device_addr, + unsigned int reg_addr, unsigned int count, + unsigned char edid[]); +void exynos_dp_reset_macro(void); +void exynos_dp_set_link_bandwidth(unsigned char bwtype); +unsigned char exynos_dp_get_link_bandwidth(void); +void exynos_dp_set_lane_count(unsigned char count); +unsigned int exynos_dp_get_lane_count(void); +unsigned char exynos_dp_get_lanex_pre_emphasis(unsigned char lanecnt); +void exynos_dp_set_lane_pre_emphasis(unsigned int level, + unsigned char lanecnt); +void exynos_dp_set_lanex_pre_emphasis(unsigned char request_val, + unsigned char lanecnt); +void exynos_dp_set_training_pattern(unsigned int pattern); +void exynos_dp_enable_enhanced_mode(unsigned char enable); +void exynos_dp_enable_scrambling(unsigned int enable); +int exynos_dp_init_video(void); +void exynos_dp_config_video_slave_mode(struct edp_video_info *video_info); +void exynos_dp_set_video_color_format(struct edp_video_info *video_info); +int exynos_dp_config_video_bist(struct edp_device_info *edp_info); +unsigned int exynos_dp_is_slave_video_stream_clock_on(void); +void exynos_dp_set_video_cr_mn(unsigned int type, unsigned int m_value, + unsigned int n_value); +void exynos_dp_set_video_timing_mode(unsigned int type); +void exynos_dp_enable_video_master(unsigned int enable); +void exynos_dp_start_video(void); +unsigned int exynos_dp_is_video_stream_on(void); + +#endif /* _EXYNOS_DP_LOWLEVEL_H */ |