2 * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
3 * Author: Chris Zhong <zyw@rock-chips.com>
5 * This software is licensed under the terms of the GNU General Public
6 * License version 2, as published by the Free Software Foundation, and
7 * may be copied, distributed, and modified under those terms.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
15 #include <linux/clk.h>
16 #include <linux/device.h>
17 #include <linux/delay.h>
19 #include <linux/iopoll.h>
20 #include <linux/reset.h>
22 #include "cdn-dp-reg.h"
24 #define CDN_DP_SPDIF_CLK 200000000
25 #define FW_ALIVE_TIMEOUT_US 1000000
26 #define MAILBOX_RETRY_US 1000
27 #define MAILBOX_TIMEOUT_US 5000000
28 #define LINK_TRAINING_RETRY_MS 20
29 #define LINK_TRAINING_TIMEOUT_MS 500
31 void cdn_dp_set_fw_clk(struct cdn_dp_device *dp, u32 clk)
33 writel(clk / 1000000, dp->regs + SW_CLK_H);
36 void cdn_dp_clock_reset(struct cdn_dp_device *dp)
40 val = DPTX_FRMR_DATA_CLK_RSTN_EN |
41 DPTX_FRMR_DATA_CLK_EN |
42 DPTX_PHY_DATA_RSTN_EN |
43 DPTX_PHY_DATA_CLK_EN |
44 DPTX_PHY_CHAR_RSTN_EN |
45 DPTX_PHY_CHAR_CLK_EN |
46 SOURCE_AUX_SYS_CLK_RSTN_EN |
47 SOURCE_AUX_SYS_CLK_EN |
48 DPTX_SYS_CLK_RSTN_EN |
50 CFG_DPTX_VIF_CLK_RSTN_EN |
52 writel(val, dp->regs + SOURCE_DPTX_CAR);
54 val = SOURCE_PHY_RSTN_EN | SOURCE_PHY_CLK_EN;
55 writel(val, dp->regs + SOURCE_PHY_CAR);
57 val = SOURCE_PKT_SYS_RSTN_EN |
58 SOURCE_PKT_SYS_CLK_EN |
59 SOURCE_PKT_DATA_RSTN_EN |
60 SOURCE_PKT_DATA_CLK_EN;
61 writel(val, dp->regs + SOURCE_PKT_CAR);
63 val = SPDIF_CDR_CLK_RSTN_EN |
65 SOURCE_AIF_SYS_RSTN_EN |
66 SOURCE_AIF_SYS_CLK_EN |
67 SOURCE_AIF_CLK_RSTN_EN |
69 writel(val, dp->regs + SOURCE_AIF_CAR);
71 val = SOURCE_CIPHER_SYSTEM_CLK_RSTN_EN |
72 SOURCE_CIPHER_SYS_CLK_EN |
73 SOURCE_CIPHER_CHAR_CLK_RSTN_EN |
74 SOURCE_CIPHER_CHAR_CLK_EN;
75 writel(val, dp->regs + SOURCE_CIPHER_CAR);
77 val = SOURCE_CRYPTO_SYS_CLK_RSTN_EN |
78 SOURCE_CRYPTO_SYS_CLK_EN;
79 writel(val, dp->regs + SOURCE_CRYPTO_CAR);
81 val = ~(MAILBOX_INT_MASK_BIT | PIF_INT_MASK_BIT) & ALL_INT_MASK;
82 writel(val, dp->regs + APB_INT_MASK);
85 static int cdn_dp_mailbox_read(struct cdn_dp_device *dp, bool force)
89 if (!dp->fw_actived && !force)
92 ret = readx_poll_timeout(readl, dp->regs + MAILBOX_EMPTY_ADDR,
93 val, !val, MAILBOX_RETRY_US,
98 return readl(dp->regs + MAILBOX0_RD_DATA) & 0xff;
101 static int cdp_dp_mailbox_write(struct cdn_dp_device *dp, u8 val, bool force)
105 if (!dp->fw_actived && !force)
108 ret = readx_poll_timeout(readl, dp->regs + MAILBOX_FULL_ADDR,
109 full, !full, MAILBOX_RETRY_US,
114 writel(val, dp->regs + MAILBOX0_WR_DATA);
119 static int cdn_dp_mailbox_validate_receive(struct cdn_dp_device *dp,
120 u8 module_id, u8 opcode,
127 /* read the header of the message */
128 for (i = 0; i < 4; i++) {
129 ret = cdn_dp_mailbox_read(dp, 0);
136 mbox_size = (header[2] << 8) | header[3];
138 if (opcode != header[0] || module_id != header[1] ||
139 req_size != mbox_size) {
141 * If the message in mailbox is not what we want, we need to
142 * clear the mailbox by read.
144 for (i = 0; i < mbox_size; i++)
145 if (cdn_dp_mailbox_read(dp, 0) < 0)
154 static int cdn_dp_mailbox_read_receive(struct cdn_dp_device *dp,
155 u8 *buff, u8 buff_size)
160 for (i = 0; i < buff_size; i++) {
161 ret = cdn_dp_mailbox_read(dp, 0);
171 static int cdn_dp_mailbox_send(struct cdn_dp_device *dp, u8 module_id,
172 u8 opcode, u16 size, u8 *message)
178 header[1] = module_id;
179 header[2] = (size >> 8) & 0xff;
180 header[3] = size & 0xff;
182 for (i = 0; i < 4; i++) {
183 ret = cdp_dp_mailbox_write(dp, header[i], 0);
188 for (i = 0; i < size; i++) {
189 ret = cdp_dp_mailbox_write(dp, message[i], 0);
197 static int cdn_dp_reg_write(struct cdn_dp_device *dp, u16 addr, u32 val)
201 msg[0] = (addr >> 8) & 0xff;
202 msg[1] = addr & 0xff;
203 msg[2] = (val >> 24) & 0xff;
204 msg[3] = (val >> 16) & 0xff;
205 msg[4] = (val >> 8) & 0xff;
207 return cdn_dp_mailbox_send(dp, MB_MODULE_ID_DP_TX, DPTX_WRITE_REGISTER,
211 static int cdn_dp_reg_write_bit(struct cdn_dp_device *dp, u16 addr,
212 u8 start_bit, u8 bits_no, u32 val)
216 field[0] = (addr >> 8) & 0xff;
217 field[1] = addr & 0xff;
218 field[2] = start_bit;
220 field[4] = (val >> 24) & 0xff;
221 field[5] = (val >> 16) & 0xff;
222 field[6] = (val >> 8) & 0xff;
223 field[7] = val & 0xff;
225 return cdn_dp_mailbox_send(dp, MB_MODULE_ID_DP_TX, DPTX_WRITE_FIELD,
226 sizeof(field), field);
229 int cdn_dp_dpcd_read(struct cdn_dp_device *dp, u32 addr, u8 *data, u16 len)
234 msg[0] = (len >> 8) & 0xff;
236 msg[2] = (addr >> 16) & 0xff;
237 msg[3] = (addr >> 8) & 0xff;
238 msg[4] = addr & 0xff;
239 ret = cdn_dp_mailbox_send(dp, MB_MODULE_ID_DP_TX, DPTX_READ_DPCD,
244 ret = cdn_dp_mailbox_validate_receive(dp, MB_MODULE_ID_DP_TX,
250 ret = cdn_dp_mailbox_read_receive(dp, reg, sizeof(reg));
254 ret = cdn_dp_mailbox_read_receive(dp, data, len);
260 int cdn_dp_dpcd_write(struct cdn_dp_device *dp, u32 addr, u8 value)
267 msg[2] = (addr >> 16) & 0xff;
268 msg[3] = (addr >> 8) & 0xff;
269 msg[4] = addr & 0xff;
271 ret = cdn_dp_mailbox_send(dp, MB_MODULE_ID_DP_TX, DPTX_WRITE_DPCD,
276 ret = cdn_dp_mailbox_validate_receive(dp, MB_MODULE_ID_DP_TX,
277 DPTX_WRITE_DPCD, sizeof(reg));
281 ret = cdn_dp_mailbox_read_receive(dp, reg, sizeof(reg));
285 if (addr != (reg[2] << 16 | reg[3] << 8 | reg[4]))
290 dev_err(dp->dev, "dpcd write failed: %d\n", ret);
294 int cdn_dp_load_firmware(struct cdn_dp_device *dp, const u32 *i_mem,
295 u32 i_size, const u32 *d_mem, u32 d_size)
300 /* reset ucpu before load firmware*/
301 writel(APB_IRAM_PATH | APB_DRAM_PATH | APB_XT_RESET,
302 dp->regs + APB_CTRL);
304 for (i = 0; i < i_size; i += 4)
305 writel(*i_mem++, dp->regs + ADDR_IMEM + i);
307 for (i = 0; i < d_size; i += 4)
308 writel(*d_mem++, dp->regs + ADDR_DMEM + i);
311 writel(0, dp->regs + APB_CTRL);
313 /* check the keep alive register to make sure fw working */
314 ret = readx_poll_timeout(readl, dp->regs + KEEP_ALIVE,
315 reg, reg, 2000, FW_ALIVE_TIMEOUT_US);
317 dev_err(dp->dev, "failed to loaded the FW reg = %x\n", reg);
321 reg = readl(dp->regs + VER_L) & 0xff;
322 dp->fw_version = reg;
323 reg = readl(dp->regs + VER_H) & 0xff;
324 dp->fw_version |= reg << 8;
325 reg = readl(dp->regs + VER_LIB_L_ADDR) & 0xff;
326 dp->fw_version |= reg << 16;
327 reg = readl(dp->regs + VER_LIB_H_ADDR) & 0xff;
328 dp->fw_version |= reg << 24;
330 dev_dbg(dp->dev, "firmware version: %x\n", dp->fw_version);
335 int cdn_dp_set_firmware_active(struct cdn_dp_device *dp, bool enable)
340 msg[0] = GENERAL_MAIN_CONTROL;
341 msg[1] = MB_MODULE_ID_GENERAL;
344 msg[4] = enable ? FW_ACTIVE : FW_STANDBY;
346 for (i = 0; i < sizeof(msg); i++) {
347 ret = cdp_dp_mailbox_write(dp, msg[i], 1);
349 goto err_set_firmware_active;
352 /* read the firmware state */
353 for (i = 0; i < sizeof(msg); i++) {
354 ret = cdn_dp_mailbox_read(dp, 1);
356 goto err_set_firmware_active;
361 dp->fw_actived = (msg[4] == FW_ACTIVE);
364 err_set_firmware_active:
366 dev_err(dp->dev, "set firmware active failed\n");
370 int cdn_dp_set_host_cap(struct cdn_dp_device *dp, u8 lanes, bool flip)
375 msg[0] = CDN_DP_MAX_LINK_RATE;
376 msg[1] = lanes | (0x1 << 4);
377 msg[2] = VOLTAGE_LEVEL_2;
378 msg[3] = PRE_EMPHASIS_LEVEL_3;
379 msg[4] = PTS1 | PTS2 | PTS3 | PTS4;
380 msg[5] = FAST_LT_NOT_SUPPORT;
381 msg[6] = flip ? LANE_MAPPING_FLIPPED : LANE_MAPPING_NORMAL;
384 ret = cdn_dp_mailbox_send(dp, MB_MODULE_ID_DP_TX,
385 DPTX_SET_HOST_CAPABILITIES,
388 goto err_set_host_cap;
390 ret = cdn_dp_reg_write(dp, DP_AUX_SWAP_INVERSION_CONTROL,
395 dev_err(dp->dev, "set host cap failed: %d\n", ret);
399 int cdn_dp_event_config(struct cdn_dp_device *dp)
404 memset(msg, 0, sizeof(msg));
406 msg[0] = DPTX_EVENT_ENABLE_HPD | DPTX_EVENT_ENABLE_TRAINING;
408 ret = cdn_dp_mailbox_send(dp, MB_MODULE_ID_DP_TX, DPTX_ENABLE_EVENT,
411 dev_err(dp->dev, "set event config failed: %d\n", ret);
416 u32 cdn_dp_get_event(struct cdn_dp_device *dp)
418 return readl(dp->regs + SW_EVENTS0);
421 int cdn_dp_get_hpd_status(struct cdn_dp_device *dp)
426 ret = cdn_dp_mailbox_send(dp, MB_MODULE_ID_DP_TX, DPTX_HPD_STATE,
431 ret = cdn_dp_mailbox_validate_receive(dp, MB_MODULE_ID_DP_TX,
432 DPTX_HPD_STATE, sizeof(status));
436 ret = cdn_dp_mailbox_read_receive(dp, &status, sizeof(status));
443 dev_err(dp->dev, "get hpd status failed: %d\n", ret);
447 int cdn_dp_get_edid_block(void *data, u8 *edid,
448 unsigned int block, size_t length)
450 struct cdn_dp_device *dp = data;
457 ret = cdn_dp_mailbox_send(dp, MB_MODULE_ID_DP_TX, DPTX_GET_EDID,
462 ret = cdn_dp_mailbox_validate_receive(dp, MB_MODULE_ID_DP_TX,
464 sizeof(reg) + length);
468 ret = cdn_dp_mailbox_read_receive(dp, reg, sizeof(reg));
472 ret = cdn_dp_mailbox_read_receive(dp, edid, length);
476 if (reg[0] != length || reg[1] != block / 2)
481 dev_err(dp->dev, "get block[%d] edid failed: %d\n", block, ret);
485 int cdn_dp_training_start(struct cdn_dp_device *dp)
487 unsigned long timeout;
491 msg = LINK_TRAINING_RUN;
494 ret = cdn_dp_mailbox_send(dp, MB_MODULE_ID_DP_TX, DPTX_TRAINING_CONTROL,
497 goto err_training_start;
499 timeout = jiffies + msecs_to_jiffies(LINK_TRAINING_TIMEOUT_MS);
500 while (time_before(jiffies, timeout)) {
501 msleep(LINK_TRAINING_RETRY_MS);
502 ret = cdn_dp_mailbox_send(dp, MB_MODULE_ID_DP_TX,
503 DPTX_READ_EVENT, 0, NULL);
505 goto err_training_start;
507 ret = cdn_dp_mailbox_validate_receive(dp, MB_MODULE_ID_DP_TX,
511 goto err_training_start;
513 ret = cdn_dp_mailbox_read_receive(dp, event, sizeof(event));
515 goto err_training_start;
517 if (event[1] & EQ_PHASE_FINISHED)
524 dev_err(dp->dev, "training failed: %d\n", ret);
528 int cdn_dp_get_training_status(struct cdn_dp_device *dp)
533 ret = cdn_dp_mailbox_send(dp, MB_MODULE_ID_DP_TX, DPTX_READ_LINK_STAT,
536 goto err_get_training_status;
538 ret = cdn_dp_mailbox_validate_receive(dp, MB_MODULE_ID_DP_TX,
542 goto err_get_training_status;
544 ret = cdn_dp_mailbox_read_receive(dp, status, sizeof(status));
546 goto err_get_training_status;
548 dp->link.rate = status[0];
549 dp->link.num_lanes = status[1];
551 err_get_training_status:
553 dev_err(dp->dev, "get training status failed: %d\n", ret);
557 int cdn_dp_set_video_status(struct cdn_dp_device *dp, int active)
564 ret = cdn_dp_mailbox_send(dp, MB_MODULE_ID_DP_TX, DPTX_SET_VIDEO,
567 dev_err(dp->dev, "set video status failed: %d\n", ret);
572 static int cdn_dp_get_msa_misc(struct video_info *video,
573 struct drm_display_mode *mode)
578 switch (video->color_fmt) {
583 /* set YUV default color space conversion to BT601 */
585 val[0] = 6 + BT_601 * 8;
588 val[0] = 5 + BT_601 * 8;
595 switch (video->color_depth) {
613 msa_misc = 2 * val[0] + 32 * val[1] +
614 ((video->color_fmt == Y_ONLY) ? (1 << 14) : 0);
619 int cdn_dp_config_video(struct cdn_dp_device *dp)
621 struct video_info *video = &dp->video_info;
622 struct drm_display_mode *mode = &dp->mode;
625 u8 bit_per_pix, tu_size_reg = TU_SIZE;
628 bit_per_pix = (video->color_fmt == YCBCR_4_2_2) ?
629 (video->color_depth * 2) : (video->color_depth * 3);
631 link_rate = drm_dp_bw_code_to_link_rate(dp->link.rate) / 1000;
633 val = VIF_BYPASS_INTERLACE;
634 ret = cdn_dp_reg_write(dp, BND_HSYNC2VSYNC, val);
636 goto err_config_video;
638 ret = cdn_dp_reg_write(dp, HSYNC2VSYNC_POL_CTRL, 0);
640 goto err_config_video;
643 * get a best tu_size and valid symbol:
644 * 1. chose Lclk freq(162Mhz, 270Mhz, 540Mhz), set TU to 32
645 * 2. calculate VS(valid symbol) = TU * Pclk * Bpp / (Lclk * Lanes)
646 * 3. if VS > *.85 or VS < *.1 or VS < 2 or TU < VS + 4, then set
647 * TU += 2 and repeat 2nd step.
651 tmp = tu_size_reg * mode->clock * bit_per_pix;
652 tmp /= dp->link.num_lanes * link_rate * 8;
654 } while ((symbol <= 1) || (tu_size_reg - symbol < 4) ||
655 (tmp % 1000 > 850) || (tmp % 1000 < 100));
657 val = symbol + (tu_size_reg << 8);
658 ret = cdn_dp_reg_write(dp, DP_FRAMER_TU, val);
660 goto err_config_video;
662 /* set the FIFO Buffer size */
663 val = ((mode->clock * (symbol + 1) / 1000) + link_rate);
664 val /= (dp->link.num_lanes * link_rate);
665 val = 8 * (symbol + 1) / bit_per_pix - val;
667 ret = cdn_dp_reg_write(dp, DP_VC_TABLE(15), val);
669 switch (video->color_depth) {
687 val += video->color_fmt << 8;
688 ret = cdn_dp_reg_write(dp, DP_FRAMER_PXL_REPR, val);
690 goto err_config_video;
692 val = video->h_sync_polarity ? DP_FRAMER_SP_HSP : 0;
693 val |= video->v_sync_polarity ? DP_FRAMER_SP_VSP : 0;
694 ret = cdn_dp_reg_write(dp, DP_FRAMER_SP, val);
696 goto err_config_video;
698 val = (mode->hsync_start - mode->hdisplay) << 16;
699 val |= mode->htotal - mode->hsync_end;
700 ret = cdn_dp_reg_write(dp, DP_FRONT_BACK_PORCH, val);
702 goto err_config_video;
704 val = mode->hdisplay * bit_per_pix / 8;
705 ret = cdn_dp_reg_write(dp, DP_BYTE_COUNT, val);
707 goto err_config_video;
709 val = mode->htotal | ((mode->htotal - mode->hsync_start) << 16);
710 ret = cdn_dp_reg_write(dp, MSA_HORIZONTAL_0, val);
712 goto err_config_video;
714 val = mode->hsync_end - mode->hsync_start;
715 val |= (mode->hdisplay << 16) | (video->h_sync_polarity << 15);
716 ret = cdn_dp_reg_write(dp, MSA_HORIZONTAL_1, val);
718 goto err_config_video;
721 val |= ((mode->vtotal - mode->vsync_start) << 16);
722 ret = cdn_dp_reg_write(dp, MSA_VERTICAL_0, val);
724 goto err_config_video;
726 val = mode->vsync_end - mode->vsync_start;
727 val |= mode->vdisplay << 16 | (video->v_sync_polarity << 15);
728 ret = cdn_dp_reg_write(dp, MSA_VERTICAL_1, val);
730 goto err_config_video;
732 val = cdn_dp_get_msa_misc(video, mode);
733 ret = cdn_dp_reg_write(dp, MSA_MISC, val);
735 goto err_config_video;
737 ret = cdn_dp_reg_write(dp, STREAM_CONFIG, 1);
739 goto err_config_video;
741 val = mode->hsync_end - mode->hsync_start;
742 val |= (mode->hdisplay << 16);
743 ret = cdn_dp_reg_write(dp, DP_HORIZONTAL, val);
745 goto err_config_video;
748 val -= (mode->vtotal - mode->vdisplay);
749 val |= (mode->vtotal - mode->vsync_start) << 16;
750 ret = cdn_dp_reg_write(dp, DP_VERTICAL_0, val);
752 goto err_config_video;
755 ret = cdn_dp_reg_write(dp, DP_VERTICAL_1, val);
757 goto err_config_video;
760 ret = cdn_dp_reg_write_bit(dp, DP_VB_ID, 2, 1, val);
764 dev_err(dp->dev, "config video failed: %d\n", ret);
768 int cdn_dp_audio_stop(struct cdn_dp_device *dp, struct audio_info *audio)
773 ret = cdn_dp_reg_write(dp, AUDIO_PACK_CONTROL, 0);
775 dev_err(dp->dev, "audio stop failed: %d\n", ret);
779 val = SPDIF_AVG_SEL | SPDIF_JITTER_BYPASS;
780 val |= SPDIF_FIFO_MID_RANGE(0xe0);
781 val |= SPDIF_JITTER_THRSH(0xe0);
782 val |= SPDIF_JITTER_AVG_WIN(7);
783 writel(val, dp->regs + SPDIF_CTRL_ADDR);
785 /* clearn the audio config and reset */
786 writel(0, dp->regs + AUDIO_SRC_CNTL);
787 writel(0, dp->regs + AUDIO_SRC_CNFG);
788 writel(AUDIO_SW_RST, dp->regs + AUDIO_SRC_CNTL);
789 writel(0, dp->regs + AUDIO_SRC_CNTL);
791 /* reset smpl2pckt component */
792 writel(0, dp->regs + SMPL2PKT_CNTL);
793 writel(AUDIO_SW_RST, dp->regs + SMPL2PKT_CNTL);
794 writel(0, dp->regs + SMPL2PKT_CNTL);
797 writel(AUDIO_SW_RST, dp->regs + FIFO_CNTL);
798 writel(0, dp->regs + FIFO_CNTL);
800 if (audio->format == AFMT_SPDIF)
801 clk_disable_unprepare(dp->spdif_clk);
806 int cdn_dp_audio_mute(struct cdn_dp_device *dp, bool enable)
810 ret = cdn_dp_reg_write_bit(dp, DP_VB_ID, 4, 1, enable);
812 dev_err(dp->dev, "audio mute failed: %d\n", ret);
817 static void cdn_dp_audio_config_i2s(struct cdn_dp_device *dp,
818 struct audio_info *audio)
820 int sub_pckt_num = 1, i2s_port_en_val = 0xf, i;
823 if (audio->channels == 2) {
824 if (dp->link.num_lanes == 1)
830 } else if (audio->channels == 4) {
834 writel(0x0, dp->regs + SPDIF_CTRL_ADDR);
836 writel(SYNC_WR_TO_CH_ZERO, dp->regs + FIFO_CNTL);
838 val = MAX_NUM_CH(audio->channels);
839 val |= NUM_OF_I2S_PORTS(audio->channels);
840 val |= AUDIO_TYPE_LPCM;
841 val |= CFG_SUB_PCKT_NUM(sub_pckt_num);
842 writel(val, dp->regs + SMPL2PKT_CNFG);
844 if (audio->sample_width == 16)
846 else if (audio->sample_width == 24)
851 val |= AUDIO_CH_NUM(audio->channels);
852 val |= I2S_DEC_PORT_EN(i2s_port_en_val);
853 val |= TRANS_SMPL_WIDTH_32;
854 writel(val, dp->regs + AUDIO_SRC_CNFG);
856 for (i = 0; i < (audio->channels + 1) / 2; i++) {
857 if (audio->sample_width == 16)
858 val = (0x08 << 8) | (0x08 << 20);
859 else if (audio->sample_width == 24)
860 val = (0x0b << 8) | (0x0b << 20);
862 val |= ((2 * i) << 4) | ((2 * i + 1) << 16);
863 writel(val, dp->regs + STTS_BIT_CH(i));
866 switch (audio->sample_rate) {
868 val = SAMPLING_FREQ(3) |
869 ORIGINAL_SAMP_FREQ(0xc);
872 val = SAMPLING_FREQ(0) |
873 ORIGINAL_SAMP_FREQ(0xf);
876 val = SAMPLING_FREQ(2) |
877 ORIGINAL_SAMP_FREQ(0xd);
880 val = SAMPLING_FREQ(8) |
881 ORIGINAL_SAMP_FREQ(0x7);
884 val = SAMPLING_FREQ(0xa) |
885 ORIGINAL_SAMP_FREQ(5);
888 val = SAMPLING_FREQ(0xc) |
889 ORIGINAL_SAMP_FREQ(3);
892 val = SAMPLING_FREQ(0xe) |
893 ORIGINAL_SAMP_FREQ(1);
897 writel(val, dp->regs + COM_CH_STTS_BITS);
899 writel(SMPL2PKT_EN, dp->regs + SMPL2PKT_CNTL);
900 writel(I2S_DEC_START, dp->regs + AUDIO_SRC_CNTL);
903 static void cdn_dp_audio_config_spdif(struct cdn_dp_device *dp)
907 val = SPDIF_AVG_SEL | SPDIF_JITTER_BYPASS;
908 val |= SPDIF_FIFO_MID_RANGE(0xe0);
909 val |= SPDIF_JITTER_THRSH(0xe0);
910 val |= SPDIF_JITTER_AVG_WIN(7);
911 writel(val, dp->regs + SPDIF_CTRL_ADDR);
913 writel(SYNC_WR_TO_CH_ZERO, dp->regs + FIFO_CNTL);
915 val = MAX_NUM_CH(2) | AUDIO_TYPE_LPCM | CFG_SUB_PCKT_NUM(4);
916 writel(val, dp->regs + SMPL2PKT_CNFG);
917 writel(SMPL2PKT_EN, dp->regs + SMPL2PKT_CNTL);
919 val = SPDIF_ENABLE | SPDIF_AVG_SEL | SPDIF_JITTER_BYPASS;
920 val |= SPDIF_FIFO_MID_RANGE(0xe0);
921 val |= SPDIF_JITTER_THRSH(0xe0);
922 val |= SPDIF_JITTER_AVG_WIN(7);
923 writel(val, dp->regs + SPDIF_CTRL_ADDR);
925 clk_prepare_enable(dp->spdif_clk);
926 clk_set_rate(dp->spdif_clk, CDN_DP_SPDIF_CLK);
929 int cdn_dp_audio_config(struct cdn_dp_device *dp, struct audio_info *audio)
933 /* reset the spdif clk before config */
934 if (audio->format == AFMT_SPDIF) {
935 reset_control_assert(dp->spdif_rst);
936 reset_control_deassert(dp->spdif_rst);
939 ret = cdn_dp_reg_write(dp, CM_LANE_CTRL, LANE_REF_CYC);
941 goto err_audio_config;
943 ret = cdn_dp_reg_write(dp, CM_CTRL, 0);
945 goto err_audio_config;
947 if (audio->format == AFMT_I2S)
948 cdn_dp_audio_config_i2s(dp, audio);
950 cdn_dp_audio_config_spdif(dp);
952 ret = cdn_dp_reg_write(dp, AUDIO_PACK_CONTROL, AUDIO_PACK_EN);
956 dev_err(dp->dev, "audio config failed: %d\n", ret);