aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/video/exynos/exynos_dp.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/video/exynos/exynos_dp.c')
-rw-r--r--drivers/video/exynos/exynos_dp.c310
1 files changed, 174 insertions, 136 deletions
diff --git a/drivers/video/exynos/exynos_dp.c b/drivers/video/exynos/exynos_dp.c
index 0d5d090d0e..9945c4bcf9 100644
--- a/drivers/video/exynos/exynos_dp.c
+++ b/drivers/video/exynos/exynos_dp.c
@@ -38,20 +38,20 @@ static void exynos_dp_disp_info(struct edp_disp_info *disp_info)
return;
}
-static int exynos_dp_init_dp(void)
+static int exynos_dp_init_dp(struct exynos_dp *dp_regs)
{
int ret;
- exynos_dp_reset();
+ exynos_dp_reset(dp_regs);
/* SW defined function Normal operation */
- exynos_dp_enable_sw_func(DP_ENABLE);
+ exynos_dp_enable_sw_func(dp_regs, DP_ENABLE);
- ret = exynos_dp_init_analog_func();
+ ret = exynos_dp_init_analog_func(dp_regs);
if (ret != EXYNOS_DP_SUCCESS)
return ret;
- exynos_dp_init_hpd();
- exynos_dp_init_aux();
+ exynos_dp_init_hpd(dp_regs);
+ exynos_dp_init_aux(dp_regs);
return ret;
}
@@ -67,7 +67,7 @@ static unsigned char exynos_dp_calc_edid_check_sum(unsigned char *edid_data)
return sum;
}
-static unsigned int exynos_dp_read_edid(void)
+static unsigned int exynos_dp_read_edid(struct exynos_dp *dp_regs)
{
unsigned char edid[EDID_BLOCK_LENGTH * 2];
unsigned int extend_block = 0;
@@ -82,14 +82,15 @@ static unsigned int exynos_dp_read_edid(void)
*/
/* 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);
+ exynos_dp_read_byte_from_i2c(dp_regs, 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,
+ retval = exynos_dp_read_bytes_from_i2c(dp_regs,
+ I2C_EDID_DEVICE_ADDR,
EDID_HEADER_PATTERN,
EDID_BLOCK_LENGTH,
&edid[EDID_HEADER_PATTERN]);
@@ -104,7 +105,8 @@ static unsigned int exynos_dp_read_edid(void)
}
/* Read additional EDID data */
- retval = exynos_dp_read_bytes_from_i2c(I2C_EDID_DEVICE_ADDR,
+ retval = exynos_dp_read_bytes_from_i2c(dp_regs,
+ I2C_EDID_DEVICE_ADDR,
EDID_BLOCK_LENGTH,
EDID_BLOCK_LENGTH,
&edid[EDID_BLOCK_LENGTH]);
@@ -118,19 +120,22 @@ static unsigned int exynos_dp_read_edid(void)
return -1;
}
- exynos_dp_read_byte_from_dpcd(DPCD_TEST_REQUEST,
- &test_vector);
+ exynos_dp_read_byte_from_dpcd(dp_regs, DPCD_TEST_REQUEST,
+ &test_vector);
if (test_vector & DPCD_TEST_EDID_READ) {
- exynos_dp_write_byte_to_dpcd(DPCD_TEST_EDID_CHECKSUM,
+ exynos_dp_write_byte_to_dpcd(dp_regs,
+ DPCD_TEST_EDID_CHECKSUM,
edid[EDID_BLOCK_LENGTH + EDID_CHECKSUM]);
- exynos_dp_write_byte_to_dpcd(DPCD_TEST_RESPONSE,
+ exynos_dp_write_byte_to_dpcd(dp_regs,
+ 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,
+ retval = exynos_dp_read_bytes_from_i2c(dp_regs,
+ I2C_EDID_DEVICE_ADDR,
EDID_HEADER_PATTERN,
EDID_BLOCK_LENGTH,
&edid[EDID_HEADER_PATTERN]);
@@ -145,12 +150,13 @@ static unsigned int exynos_dp_read_edid(void)
return -1;
}
- exynos_dp_read_byte_from_dpcd(DPCD_TEST_REQUEST,
+ exynos_dp_read_byte_from_dpcd(dp_regs, 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,
+ exynos_dp_write_byte_to_dpcd(dp_regs,
+ DPCD_TEST_EDID_CHECKSUM, edid[EDID_CHECKSUM]);
+ exynos_dp_write_byte_to_dpcd(dp_regs,
+ DPCD_TEST_RESPONSE,
DPCD_TEST_EDID_CHECKSUM_WRITE);
}
}
@@ -160,7 +166,8 @@ static unsigned int exynos_dp_read_edid(void)
return 0;
}
-static unsigned int exynos_dp_handle_edid(struct edp_device_info *edp_info)
+static unsigned int exynos_dp_handle_edid(struct exynos_dp *dp_regs,
+ struct edp_device_info *edp_info)
{
unsigned char buf[12];
unsigned int ret;
@@ -178,8 +185,8 @@ static unsigned int exynos_dp_handle_edid(struct edp_device_info *edp_info)
retry_cnt = 5;
while (retry_cnt) {
/* Read DPCD 0x0000-0x000b */
- ret = exynos_dp_read_bytes_from_dpcd(DPCD_DPCD_REV, 12,
- buf);
+ ret = exynos_dp_read_bytes_from_dpcd(dp_regs, DPCD_DPCD_REV, 12,
+ buf);
if (ret != EXYNOS_DP_SUCCESS) {
if (retry_cnt == 0) {
printf("DP read_byte_from_dpcd() failed\n");
@@ -227,7 +234,7 @@ static unsigned int exynos_dp_handle_edid(struct edp_device_info *edp_info)
return -EINVAL;
}
- ret = exynos_dp_read_edid();
+ ret = exynos_dp_read_edid(dp_regs);
if (ret != EXYNOS_DP_SUCCESS) {
printf("DP exynos_dp_read_edid() failed\n");
return -EINVAL;
@@ -236,19 +243,20 @@ static unsigned int exynos_dp_handle_edid(struct edp_device_info *edp_info)
return ret;
}
-static void exynos_dp_init_training(void)
+static void exynos_dp_init_training(struct exynos_dp *dp_regs)
{
/*
* 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();
+ exynos_dp_reset_macro(dp_regs);
/* All DP analog module power up */
- exynos_dp_set_analog_power_down(POWER_ALL, 0);
+ exynos_dp_set_analog_power_down(dp_regs, POWER_ALL, 0);
}
-static unsigned int exynos_dp_link_start(struct edp_device_info *edp_info)
+static unsigned int exynos_dp_link_start(struct exynos_dp *dp_regs,
+ struct edp_device_info *edp_info)
{
unsigned char buf[5];
unsigned int ret = 0;
@@ -263,33 +271,32 @@ static unsigned int exynos_dp_link_start(struct edp_device_info *edp_info)
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);
+ ret = exynos_dp_write_byte_to_dpcd(dp_regs, 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);
+ exynos_dp_set_link_bandwidth(dp_regs, edp_info->lane_bw);
+ exynos_dp_set_lane_count(dp_regs, 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);
+ ret = exynos_dp_write_bytes_to_dpcd(dp_regs, 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,
+ exynos_dp_set_lane_pre_emphasis(dp_regs, PRE_EMPHASIS_LEVEL_0,
edp_info->lane_cnt);
/* Set training pattern 1 */
- exynos_dp_set_training_pattern(TRAINING_PTN1);
+ exynos_dp_set_training_pattern(dp_regs, TRAINING_PTN1);
/* Set RX training pattern */
buf[0] = DPCD_SCRAMBLING_DISABLED | DPCD_TRAINING_PATTERN_1;
@@ -303,8 +310,8 @@ static unsigned int exynos_dp_link_start(struct edp_device_info *edp_info)
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);
+ ret = exynos_dp_write_bytes_to_dpcd(dp_regs, DPCD_TRAINING_PATTERN_SET,
+ 5, buf);
if (ret != EXYNOS_DP_SUCCESS) {
printf("DP write_dpcd_byte failed\n");
return ret;
@@ -313,14 +320,14 @@ static unsigned int exynos_dp_link_start(struct edp_device_info *edp_info)
return ret;
}
-static unsigned int exynos_dp_training_pattern_dis(void)
+static unsigned int exynos_dp_training_pattern_dis(struct exynos_dp *dp_regs)
{
unsigned int ret = EXYNOS_DP_SUCCESS;
- exynos_dp_set_training_pattern(DP_NONE);
+ exynos_dp_set_training_pattern(dp_regs, DP_NONE);
- ret = exynos_dp_write_byte_to_dpcd(DPCD_TRAINING_PATTERN_SET,
- DPCD_TRAINING_PATTERN_DISABLED);
+ ret = exynos_dp_write_byte_to_dpcd(dp_regs, DPCD_TRAINING_PATTERN_SET,
+ DPCD_TRAINING_PATTERN_DISABLED);
if (ret != EXYNOS_DP_SUCCESS) {
printf("DP request_link_training_req failed\n");
return -EAGAIN;
@@ -329,13 +336,14 @@ static unsigned int exynos_dp_training_pattern_dis(void)
return ret;
}
-static unsigned int exynos_dp_enable_rx_to_enhanced_mode(unsigned char enable)
+static unsigned int exynos_dp_enable_rx_to_enhanced_mode(
+ struct exynos_dp *dp_regs, unsigned char enable)
{
unsigned char data;
unsigned int ret = EXYNOS_DP_SUCCESS;
- ret = exynos_dp_read_byte_from_dpcd(DPCD_LANE_COUNT_SET,
- &data);
+ ret = exynos_dp_read_byte_from_dpcd(dp_regs, DPCD_LANE_COUNT_SET,
+ &data);
if (ret != EXYNOS_DP_SUCCESS) {
printf("DP read_from_dpcd failed\n");
return -EAGAIN;
@@ -346,8 +354,7 @@ static unsigned int exynos_dp_enable_rx_to_enhanced_mode(unsigned char enable)
else
data = DPCD_LN_COUNT_SET(data);
- ret = exynos_dp_write_byte_to_dpcd(DPCD_LANE_COUNT_SET,
- data);
+ ret = exynos_dp_write_byte_to_dpcd(dp_regs, DPCD_LANE_COUNT_SET, data);
if (ret != EXYNOS_DP_SUCCESS) {
printf("DP write_to_dpcd failed\n");
return -EAGAIN;
@@ -357,23 +364,25 @@ static unsigned int exynos_dp_enable_rx_to_enhanced_mode(unsigned char enable)
return ret;
}
-static unsigned int exynos_dp_set_enhanced_mode(unsigned char enhance_mode)
+static unsigned int exynos_dp_set_enhanced_mode(struct exynos_dp *dp_regs,
+ unsigned char enhance_mode)
{
unsigned int ret = EXYNOS_DP_SUCCESS;
- ret = exynos_dp_enable_rx_to_enhanced_mode(enhance_mode);
+ ret = exynos_dp_enable_rx_to_enhanced_mode(dp_regs, enhance_mode);
if (ret != EXYNOS_DP_SUCCESS) {
printf("DP rx_enhance_mode failed\n");
return -EAGAIN;
}
- exynos_dp_enable_enhanced_mode(enhance_mode);
+ exynos_dp_enable_enhanced_mode(dp_regs, enhance_mode);
return ret;
}
-static int exynos_dp_read_dpcd_lane_stat(struct edp_device_info *edp_info,
- unsigned char *status)
+static int exynos_dp_read_dpcd_lane_stat(struct exynos_dp *dp_regs,
+ struct edp_device_info *edp_info,
+ unsigned char *status)
{
unsigned int ret, i;
unsigned char buf[2];
@@ -385,7 +394,8 @@ static int exynos_dp_read_dpcd_lane_stat(struct edp_device_info *edp_info,
shift_val[2] = 0;
shift_val[3] = 4;
- ret = exynos_dp_read_bytes_from_dpcd(DPCD_LANE0_1_STATUS, 2, buf);
+ ret = exynos_dp_read_bytes_from_dpcd(dp_regs, DPCD_LANE0_1_STATUS, 2,
+ buf);
if (ret != EXYNOS_DP_SUCCESS) {
printf("DP read lane status failed\n");
return ret;
@@ -404,8 +414,8 @@ static int exynos_dp_read_dpcd_lane_stat(struct edp_device_info *edp_info,
return ret;
}
-static unsigned int exynos_dp_read_dpcd_adj_req(unsigned char lane_num,
- unsigned char *sw, unsigned char *em)
+static unsigned int exynos_dp_read_dpcd_adj_req(struct exynos_dp *dp_regs,
+ unsigned char lane_num, unsigned char *sw, unsigned char *em)
{
unsigned int ret = EXYNOS_DP_SUCCESS;
unsigned char buf;
@@ -415,7 +425,7 @@ static unsigned int exynos_dp_read_dpcd_adj_req(unsigned char lane_num,
/* lane_num value is used as array 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);
+ ret = exynos_dp_read_byte_from_dpcd(dp_regs, dpcd_addr, &buf);
if (ret != EXYNOS_DP_SUCCESS) {
printf("DP read adjust request failed\n");
return -EAGAIN;
@@ -427,17 +437,18 @@ static unsigned int exynos_dp_read_dpcd_adj_req(unsigned char lane_num,
return ret;
}
-static int exynos_dp_equalizer_err_link(struct edp_device_info *edp_info)
+static int exynos_dp_equalizer_err_link(struct exynos_dp *dp_regs,
+ struct edp_device_info *edp_info)
{
int ret;
- ret = exynos_dp_training_pattern_dis();
+ ret = exynos_dp_training_pattern_dis(dp_regs);
if (ret != EXYNOS_DP_SUCCESS) {
printf("DP training_pattern_disable() failed\n");
edp_info->lt_info.lt_status = DP_LT_FAIL;
}
- ret = exynos_dp_set_enhanced_mode(edp_info->dpcd_efc);
+ ret = exynos_dp_set_enhanced_mode(dp_regs, 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;
@@ -446,7 +457,8 @@ static int exynos_dp_equalizer_err_link(struct edp_device_info *edp_info)
return ret;
}
-static int exynos_dp_reduce_link_rate(struct edp_device_info *edp_info)
+static int exynos_dp_reduce_link_rate(struct exynos_dp *dp_regs,
+ struct edp_device_info *edp_info)
{
int ret;
@@ -456,11 +468,11 @@ static int exynos_dp_reduce_link_rate(struct edp_device_info *edp_info)
edp_info->lt_info.lt_status = DP_LT_START;
ret = EXYNOS_DP_SUCCESS;
} else {
- ret = exynos_dp_training_pattern_dis();
+ ret = exynos_dp_training_pattern_dis(dp_regs);
if (ret != EXYNOS_DP_SUCCESS)
printf("DP training_patter_disable() failed\n");
- ret = exynos_dp_set_enhanced_mode(edp_info->dpcd_efc);
+ ret = exynos_dp_set_enhanced_mode(dp_regs, edp_info->dpcd_efc);
if (ret != EXYNOS_DP_SUCCESS)
printf("DP set_enhanced_mode() failed\n");
@@ -470,8 +482,8 @@ static int exynos_dp_reduce_link_rate(struct edp_device_info *edp_info)
return ret;
}
-static unsigned int exynos_dp_process_clock_recovery(struct edp_device_info
- *edp_info)
+static unsigned int exynos_dp_process_clock_recovery(struct exynos_dp *dp_regs,
+ struct edp_device_info *edp_info)
{
unsigned int ret = EXYNOS_DP_SUCCESS;
unsigned char lane_stat;
@@ -484,7 +496,7 @@ static unsigned int exynos_dp_process_clock_recovery(struct edp_device_info
debug("DP: %s was called\n", __func__);
mdelay(1);
- ret = exynos_dp_read_dpcd_lane_stat(edp_info, &lane_stat);
+ ret = exynos_dp_read_dpcd_lane_stat(dp_regs, 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;
@@ -493,11 +505,11 @@ static unsigned int exynos_dp_process_clock_recovery(struct edp_device_info
if (lane_stat & DP_LANE_STAT_CR_DONE) {
debug("DP clock Recovery training succeed\n");
- exynos_dp_set_training_pattern(TRAINING_PTN2);
+ exynos_dp_set_training_pattern(dp_regs, 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);
+ ret = exynos_dp_read_dpcd_adj_req(dp_regs, i,
+ &adj_req_sw, &adj_req_em);
if (ret != EXYNOS_DP_SUCCESS) {
edp_info->lt_info.lt_status = DP_LT_FAIL;
return ret;
@@ -511,7 +523,8 @@ static unsigned int exynos_dp_process_clock_recovery(struct edp_device_info
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);
+ exynos_dp_set_lanex_pre_emphasis(dp_regs,
+ lt_ctl_val[i], i);
}
buf[0] = DPCD_SCRAMBLING_DISABLED | DPCD_TRAINING_PATTERN_2;
@@ -520,7 +533,7 @@ static unsigned int exynos_dp_process_clock_recovery(struct edp_device_info
buf[3] = lt_ctl_val[2];
buf[4] = lt_ctl_val[3];
- ret = exynos_dp_write_bytes_to_dpcd(
+ ret = exynos_dp_write_bytes_to_dpcd(dp_regs,
DPCD_TRAINING_PATTERN_SET, 5, buf);
if (ret != EXYNOS_DP_SUCCESS) {
printf("DP write training pattern1 failed\n");
@@ -530,8 +543,9 @@ static unsigned int exynos_dp_process_clock_recovery(struct edp_device_info
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,
+ lt_ctl_val[i] = exynos_dp_get_lanex_pre_emphasis(
+ dp_regs, i);
+ ret = exynos_dp_read_dpcd_adj_req(dp_regs, i,
&adj_req_sw, &adj_req_em);
if (ret != EXYNOS_DP_SUCCESS) {
printf("DP read adj req failed\n");
@@ -541,7 +555,8 @@ static unsigned int exynos_dp_process_clock_recovery(struct edp_device_info
if ((adj_req_sw == VOLTAGE_LEVEL_3) ||
(adj_req_em == PRE_EMPHASIS_LEVEL_3))
- ret = exynos_dp_reduce_link_rate(edp_info);
+ ret = exynos_dp_reduce_link_rate(dp_regs,
+ edp_info);
if ((DRIVE_CURRENT_SET_0_GET(lt_ctl_val[i]) ==
adj_req_sw) &&
@@ -550,7 +565,7 @@ static unsigned int exynos_dp_process_clock_recovery(struct edp_device_info
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);
+ dp_regs, edp_info);
}
lt_ctl_val[i] = 0;
@@ -561,10 +576,11 @@ static unsigned int exynos_dp_process_clock_recovery(struct edp_device_info
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);
+ exynos_dp_set_lanex_pre_emphasis(dp_regs,
+ lt_ctl_val[i], i);
}
- ret = exynos_dp_write_bytes_to_dpcd(
+ ret = exynos_dp_write_bytes_to_dpcd(dp_regs,
DPCD_TRAINING_LANE0_SET, 4, lt_ctl_val);
if (ret != EXYNOS_DP_SUCCESS) {
printf("DP write training pattern2 failed\n");
@@ -576,8 +592,8 @@ static unsigned int exynos_dp_process_clock_recovery(struct edp_device_info
return ret;
}
-static unsigned int exynos_dp_process_equalizer_training(struct edp_device_info
- *edp_info)
+static unsigned int exynos_dp_process_equalizer_training(
+ struct exynos_dp *dp_regs, struct edp_device_info *edp_info)
{
unsigned int ret = EXYNOS_DP_SUCCESS;
unsigned char lane_stat, adj_req_sw, adj_req_em, i;
@@ -589,7 +605,7 @@ static unsigned int exynos_dp_process_equalizer_training(struct edp_device_info
mdelay(1);
- ret = exynos_dp_read_dpcd_lane_stat(edp_info, &lane_stat);
+ ret = exynos_dp_read_dpcd_lane_stat(dp_regs, 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;
@@ -599,8 +615,9 @@ static unsigned int exynos_dp_process_equalizer_training(struct edp_device_info
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);
+ ret = exynos_dp_read_byte_from_dpcd(dp_regs,
+ DPCD_LN_ALIGN_UPDATED,
+ &sink_stat);
if (ret != EXYNOS_DP_SUCCESS) {
edp_info->lt_info.lt_status = DP_LT_FAIL;
@@ -610,7 +627,7 @@ static unsigned int exynos_dp_process_equalizer_training(struct edp_device_info
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,
+ ret = exynos_dp_read_dpcd_adj_req(dp_regs, i,
&adj_req_sw, &adj_req_em);
if (ret != EXYNOS_DP_SUCCESS) {
printf("DP read adj req 1 failed\n");
@@ -634,15 +651,15 @@ static unsigned int exynos_dp_process_equalizer_training(struct edp_device_info
&& (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();
+ f_bw = exynos_dp_get_link_bandwidth(dp_regs);
+ f_lane_cnt = exynos_dp_get_lane_count(dp_regs);
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);
+ exynos_dp_equalizer_err_link(dp_regs, edp_info);
} else {
edp_info->lt_info.ep_loop++;
@@ -650,46 +667,49 @@ static unsigned int exynos_dp_process_equalizer_training(struct edp_device_info
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);
+ dp_regs, edp_info);
} else {
edp_info->lt_info.lt_status =
DP_LT_FAIL;
- exynos_dp_equalizer_err_link(edp_info);
+ exynos_dp_equalizer_err_link(dp_regs,
+ edp_info);
}
} else {
for (i = 0; i < edp_info->lane_cnt; i++)
exynos_dp_set_lanex_pre_emphasis(
- lt_ctl_val[i], i);
+ dp_regs, lt_ctl_val[i], i);
- ret = exynos_dp_write_bytes_to_dpcd(
- DPCD_TRAINING_LANE0_SET,
- 4, lt_ctl_val);
+ ret = exynos_dp_write_bytes_to_dpcd(dp_regs,
+ 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);
+ exynos_dp_equalizer_err_link(dp_regs,
+ edp_info);
}
}
}
} else if (edp_info->lane_bw == DP_LANE_BW_2_70) {
- ret = exynos_dp_reduce_link_rate(edp_info);
+ ret = exynos_dp_reduce_link_rate(dp_regs, edp_info);
} else {
edp_info->lt_info.lt_status = DP_LT_FAIL;
- exynos_dp_equalizer_err_link(edp_info);
+ exynos_dp_equalizer_err_link(dp_regs, edp_info);
}
return ret;
}
-static unsigned int exynos_dp_sw_link_training(struct edp_device_info *edp_info)
+static unsigned int exynos_dp_sw_link_training(struct exynos_dp *dp_regs,
+ 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);
+ exynos_dp_set_analog_power_down(dp_regs, CH1_BLOCK, 1);
training_finished = 0;
@@ -699,21 +719,23 @@ static unsigned int exynos_dp_sw_link_training(struct edp_device_info *edp_info)
while (!training_finished) {
switch (edp_info->lt_info.lt_status) {
case DP_LT_START:
- ret = exynos_dp_link_start(edp_info);
+ ret = exynos_dp_link_start(dp_regs, 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);
+ ret = exynos_dp_process_clock_recovery(dp_regs,
+ 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);
+ ret = exynos_dp_process_equalizer_training(dp_regs,
+ edp_info);
if (ret != EXYNOS_DP_SUCCESS) {
printf("DP LT:equalizer training failed\n");
return ret;
@@ -730,40 +752,43 @@ static unsigned int exynos_dp_sw_link_training(struct edp_device_info *edp_info)
return ret;
}
-static unsigned int exynos_dp_set_link_train(struct edp_device_info *edp_info)
+static unsigned int exynos_dp_set_link_train(struct exynos_dp *dp_regs,
+ struct edp_device_info *edp_info)
{
unsigned int ret;
- exynos_dp_init_training();
+ exynos_dp_init_training(dp_regs);
- ret = exynos_dp_sw_link_training(edp_info);
+ ret = exynos_dp_sw_link_training(dp_regs, edp_info);
if (ret != EXYNOS_DP_SUCCESS)
printf("DP dp_sw_link_training() failed\n");
return ret;
}
-static void exynos_dp_enable_scramble(unsigned int enable)
+static void exynos_dp_enable_scramble(struct exynos_dp *dp_regs,
+ unsigned int enable)
{
unsigned char data;
if (enable) {
- exynos_dp_enable_scrambling(DP_ENABLE);
+ exynos_dp_enable_scrambling(dp_regs, DP_ENABLE);
- exynos_dp_read_byte_from_dpcd(DPCD_TRAINING_PATTERN_SET,
- &data);
- exynos_dp_write_byte_to_dpcd(DPCD_TRAINING_PATTERN_SET,
+ exynos_dp_read_byte_from_dpcd(dp_regs,
+ DPCD_TRAINING_PATTERN_SET, &data);
+ exynos_dp_write_byte_to_dpcd(dp_regs, 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,
+ exynos_dp_enable_scrambling(dp_regs, DP_DISABLE);
+ exynos_dp_read_byte_from_dpcd(dp_regs,
+ DPCD_TRAINING_PATTERN_SET, &data);
+ exynos_dp_write_byte_to_dpcd(dp_regs, DPCD_TRAINING_PATTERN_SET,
(u8)(data | DPCD_SCRAMBLING_DISABLED));
}
}
-static unsigned int exynos_dp_config_video(struct edp_device_info *edp_info)
+static unsigned int exynos_dp_config_video(struct exynos_dp *dp_regs,
+ struct edp_device_info *edp_info)
{
unsigned int ret = 0;
unsigned int retry_cnt;
@@ -775,17 +800,18 @@ static unsigned int exynos_dp_config_video(struct edp_device_info *edp_info)
return -ENODEV;
} else {
/* debug slave */
- exynos_dp_config_video_slave_mode(&edp_info->video_info);
+ exynos_dp_config_video_slave_mode(dp_regs,
+ &edp_info->video_info);
}
- exynos_dp_set_video_color_format(&edp_info->video_info);
+ exynos_dp_set_video_color_format(dp_regs, &edp_info->video_info);
if (edp_info->video_info.bist_mode) {
- if (exynos_dp_config_video_bist(edp_info) != 0)
+ if (exynos_dp_config_video_bist(dp_regs, edp_info) != 0)
return -1;
}
- ret = exynos_dp_get_pll_lock_status();
+ ret = exynos_dp_get_pll_lock_status(dp_regs);
if (ret != PLL_LOCKED) {
printf("DP PLL is not locked yet\n");
return -EIO;
@@ -794,7 +820,7 @@ static unsigned int exynos_dp_config_video(struct edp_device_info *edp_info)
if (edp_info->video_info.master_mode == 0) {
retry_cnt = 10;
while (retry_cnt) {
- ret = exynos_dp_is_slave_video_stream_clock_on();
+ ret = exynos_dp_is_slave_video_stream_clock_on(dp_regs);
if (ret != EXYNOS_DP_SUCCESS) {
if (retry_cnt == 0) {
printf("DP stream_clock_on failed\n");
@@ -808,32 +834,34 @@ static unsigned int exynos_dp_config_video(struct edp_device_info *edp_info)
}
/* Set to use the register calculated M/N video */
- exynos_dp_set_video_cr_mn(CALCULATED_M, 0, 0);
+ exynos_dp_set_video_cr_mn(dp_regs, CALCULATED_M, 0, 0);
/* For video bist, Video timing must be generated by register */
- exynos_dp_set_video_timing_mode(VIDEO_TIMING_FROM_CAPTURE);
+ exynos_dp_set_video_timing_mode(dp_regs, 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);
+ exynos_dp_enable_video_bist(dp_regs,
+ edp_info->video_info.bist_mode);
else
- exynos_dp_enable_video_bist(DP_DISABLE);
+ exynos_dp_enable_video_bist(dp_regs, DP_DISABLE);
/* Disable video mute */
- exynos_dp_enable_video_mute(DP_DISABLE);
+ exynos_dp_enable_video_mute(dp_regs, DP_DISABLE);
/* Configure video Master or Slave mode */
- exynos_dp_enable_video_master(edp_info->video_info.master_mode);
+ exynos_dp_enable_video_master(dp_regs,
+ edp_info->video_info.master_mode);
/* Enable video */
- exynos_dp_start_video();
+ exynos_dp_start_video(dp_regs);
if (edp_info->video_info.master_mode == 0) {
retry_cnt = 100;
while (retry_cnt) {
- ret = exynos_dp_is_video_stream_on();
+ ret = exynos_dp_is_video_stream_on(dp_regs);
if (ret != EXYNOS_DP_SUCCESS) {
if (retry_cnt == 0) {
printf("DP Timeout of video stream\n");
@@ -907,6 +935,8 @@ unsigned int exynos_init_dp(void)
{
unsigned int ret;
struct edp_device_info *edp_info;
+ struct exynos_dp *dp_regs;
+ int node;
edp_info = kzalloc(sizeof(struct edp_device_info), GFP_KERNEL);
if (!edp_info) {
@@ -917,39 +947,47 @@ unsigned int exynos_init_dp(void)
if (exynos_dp_parse_dt(gd->fdt_blob, edp_info))
debug("unable to parse DP DT node\n");
- exynos_dp_set_base_addr();
+ node = fdtdec_next_compatible(gd->fdt_blob, 0,
+ COMPAT_SAMSUNG_EXYNOS5_DP);
+ if (node <= 0)
+ debug("exynos_dp: Can't get device node for dp\n");
+
+ dp_regs = (struct exynos_dp *)fdtdec_get_addr(gd->fdt_blob, node,
+ "reg");
+ if (dp_regs == NULL)
+ debug("Can't get the DP base address\n");
exynos_dp_disp_info(&edp_info->disp_info);
exynos_set_dp_phy(1);
- ret = exynos_dp_init_dp();
+ ret = exynos_dp_init_dp(dp_regs);
if (ret != EXYNOS_DP_SUCCESS) {
printf("DP exynos_dp_init_dp() failed\n");
return ret;
}
- ret = exynos_dp_handle_edid(edp_info);
+ ret = exynos_dp_handle_edid(dp_regs, edp_info);
if (ret != EXYNOS_DP_SUCCESS) {
printf("EDP handle_edid fail\n");
return ret;
}
- ret = exynos_dp_set_link_train(edp_info);
+ ret = exynos_dp_set_link_train(dp_regs, 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_enable_scramble(dp_regs, DP_ENABLE);
+ exynos_dp_enable_rx_to_enhanced_mode(dp_regs, DP_ENABLE);
+ exynos_dp_enable_enhanced_mode(dp_regs, DP_ENABLE);
- exynos_dp_set_link_bandwidth(edp_info->lane_bw);
- exynos_dp_set_lane_count(edp_info->lane_cnt);
+ exynos_dp_set_link_bandwidth(dp_regs, edp_info->lane_bw);
+ exynos_dp_set_lane_count(dp_regs, edp_info->lane_cnt);
- exynos_dp_init_video();
- ret = exynos_dp_config_video(edp_info);
+ exynos_dp_init_video(dp_regs);
+ ret = exynos_dp_config_video(dp_regs, edp_info);
if (ret != EXYNOS_DP_SUCCESS) {
printf("Exynos DP init failed\n");
return ret;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-19 19:21:30 +0000