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exynos: video: Drop static variables in exynos_dp_lowlevel.c 

Drop these and use parameters instead.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
This commit is contained in:
Simon Glass 2016-02-21 21:08:44 -07:00 committed by Minkyu Kang
parent 9c4d440e85
commit 8c9b8dc05a
3 changed files with 351 additions and 285 deletions
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310
drivers/video/exynos/exynos_dp.c
View File

@ -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;

195
drivers/video/exynos/exynos_dp_lowlevel.c
View File

@ -14,26 +14,13 @@
#include <asm/arch/dp.h>
#include <fdtdec.h>
#include <libfdt.h>
#include "exynos_dp_lowlevel.h"
/* Declare global data pointer */
DECLARE_GLOBAL_DATA_PTR;
struct exynos_dp *dp_regs;
void exynos_dp_set_base_addr(void)
{
unsigned int 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");
}
static void exynos_dp_enable_video_input(unsigned int enable)
static void exynos_dp_enable_video_input(struct exynos_dp *dp_regs,
unsigned int enable)
{
unsigned int reg;
@ -49,7 +36,7 @@ static void exynos_dp_enable_video_input(unsigned int enable)
return;
}
void exynos_dp_enable_video_bist(unsigned int enable)
void exynos_dp_enable_video_bist(struct exynos_dp *dp_regs, unsigned int enable)
{
/* enable video bist */
unsigned int reg;
@ -66,7 +53,7 @@ void exynos_dp_enable_video_bist(unsigned int enable)
return;
}
void exynos_dp_enable_video_mute(unsigned int enable)
void exynos_dp_enable_video_mute(struct exynos_dp *dp_regs, unsigned int enable)
{
unsigned int reg;
@ -81,7 +68,7 @@ void exynos_dp_enable_video_mute(unsigned int enable)
}
static void exynos_dp_init_analog_param(void)
static void exynos_dp_init_analog_param(struct exynos_dp *dp_regs)
{
unsigned int reg;
@ -130,7 +117,7 @@ static void exynos_dp_init_analog_param(void)
writel(reg, &dp_regs->pll_ctl);
}
static void exynos_dp_init_interrupt(void)
static void exynos_dp_init_interrupt(struct exynos_dp *dp_regs)
{
/* Set interrupt registers to initial states */
@ -157,16 +144,16 @@ static void exynos_dp_init_interrupt(void)
writel(0x00, &dp_regs->int_sta_mask);
}
void exynos_dp_reset(void)
void exynos_dp_reset(struct exynos_dp *dp_regs)
{
unsigned int reg_func_1;
/* 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);
exynos_dp_enable_video_input(dp_regs, DP_DISABLE);
exynos_dp_enable_video_bist(dp_regs, DP_DISABLE);
exynos_dp_enable_video_mute(dp_regs, DP_DISABLE);
/* software reset */
reg_func_1 = MASTER_VID_FUNC_EN_N | SLAVE_VID_FUNC_EN_N |
@ -178,13 +165,13 @@ void exynos_dp_reset(void)
mdelay(1);
exynos_dp_init_analog_param();
exynos_dp_init_interrupt();
exynos_dp_init_analog_param(dp_regs);
exynos_dp_init_interrupt(dp_regs);
return;
}
void exynos_dp_enable_sw_func(unsigned int enable)
void exynos_dp_enable_sw_func(struct exynos_dp *dp_regs, unsigned int enable)
{
unsigned int reg;
@ -199,7 +186,8 @@ void exynos_dp_enable_sw_func(unsigned int enable)
return;
}
unsigned int exynos_dp_set_analog_power_down(unsigned int block, u32 enable)
unsigned int exynos_dp_set_analog_power_down(struct exynos_dp *dp_regs,
unsigned int block, u32 enable)
{
unsigned int reg;
@ -252,7 +240,7 @@ unsigned int exynos_dp_set_analog_power_down(unsigned int block, u32 enable)
return 0;
}
unsigned int exynos_dp_get_pll_lock_status(void)
unsigned int exynos_dp_get_pll_lock_status(struct exynos_dp *dp_regs)
{
unsigned int reg;
@ -264,7 +252,8 @@ unsigned int exynos_dp_get_pll_lock_status(void)
return PLL_UNLOCKED;
}
static void exynos_dp_set_pll_power(unsigned int enable)
static void exynos_dp_set_pll_power(struct exynos_dp *dp_regs,
unsigned int enable)
{
unsigned int reg;
@ -277,14 +266,14 @@ static void exynos_dp_set_pll_power(unsigned int enable)
writel(reg, &dp_regs->pll_ctl);
}
int exynos_dp_init_analog_func(void)
int exynos_dp_init_analog_func(struct exynos_dp *dp_regs)
{
int ret = EXYNOS_DP_SUCCESS;
unsigned int retry_cnt = 10;
unsigned int reg;
/* Power On All Analog block */
exynos_dp_set_analog_power_down(POWER_ALL, DP_DISABLE);
exynos_dp_set_analog_power_down(dp_regs, POWER_ALL, DP_DISABLE);
reg = PLL_LOCK_CHG;
writel(reg, &dp_regs->common_int_sta1);
@ -305,9 +294,9 @@ int exynos_dp_init_analog_func(void)
reg &= ~(DP_PLL_RESET);
writel(reg, &dp_regs->pll_ctl);
exynos_dp_set_pll_power(DP_ENABLE);
exynos_dp_set_pll_power(dp_regs, DP_ENABLE);
while (exynos_dp_get_pll_lock_status() == PLL_UNLOCKED) {
while (exynos_dp_get_pll_lock_status(dp_regs) == PLL_UNLOCKED) {
mdelay(1);
retry_cnt--;
if (retry_cnt == 0) {
@ -328,7 +317,7 @@ int exynos_dp_init_analog_func(void)
return ret;
}
void exynos_dp_init_hpd(void)
void exynos_dp_init_hpd(struct exynos_dp *dp_regs)
{
unsigned int reg;
@ -346,7 +335,7 @@ void exynos_dp_init_hpd(void)
return;
}
static inline void exynos_dp_reset_aux(void)
static inline void exynos_dp_reset_aux(struct exynos_dp *dp_regs)
{
unsigned int reg;
@ -358,7 +347,7 @@ static inline void exynos_dp_reset_aux(void)
return;
}
void exynos_dp_init_aux(void)
void exynos_dp_init_aux(struct exynos_dp *dp_regs)
{
unsigned int reg;
@ -366,7 +355,7 @@ void exynos_dp_init_aux(void)
reg = RPLY_RECEIV | AUX_ERR;
writel(reg, &dp_regs->int_sta);
exynos_dp_reset_aux();
exynos_dp_reset_aux(dp_regs);
/* Disable AUX transaction H/W retry */
reg = AUX_BIT_PERIOD_EXPECTED_DELAY(3) | AUX_HW_RETRY_COUNT_SEL(3)|
@ -385,7 +374,7 @@ void exynos_dp_init_aux(void)
return;
}
void exynos_dp_config_interrupt(void)
void exynos_dp_config_interrupt(struct exynos_dp *dp_regs)
{
unsigned int reg;
@ -408,7 +397,7 @@ void exynos_dp_config_interrupt(void)
return;
}
unsigned int exynos_dp_get_plug_in_status(void)
unsigned int exynos_dp_get_plug_in_status(struct exynos_dp *dp_regs)
{
unsigned int reg;
@ -419,13 +408,13 @@ unsigned int exynos_dp_get_plug_in_status(void)
return -1;
}
unsigned int exynos_dp_detect_hpd(void)
unsigned int exynos_dp_detect_hpd(struct exynos_dp *dp_regs)
{
int timeout_loop = DP_TIMEOUT_LOOP_COUNT;
mdelay(2);
while (exynos_dp_get_plug_in_status() != 0) {
while (exynos_dp_get_plug_in_status(dp_regs) != 0) {
if (timeout_loop == 0)
return -EINVAL;
mdelay(10);
@ -435,7 +424,7 @@ unsigned int exynos_dp_detect_hpd(void)
return EXYNOS_DP_SUCCESS;
}
unsigned int exynos_dp_start_aux_transaction(void)
unsigned int exynos_dp_start_aux_transaction(struct exynos_dp *dp_regs)
{
unsigned int reg;
unsigned int ret = 0;
@ -484,8 +473,9 @@ unsigned int exynos_dp_start_aux_transaction(void)
return EXYNOS_DP_SUCCESS;
}
unsigned int exynos_dp_write_byte_to_dpcd(unsigned int reg_addr,
unsigned char data)
unsigned int exynos_dp_write_byte_to_dpcd(struct exynos_dp *dp_regs,
unsigned int reg_addr,
unsigned char data)
{
unsigned int reg, ret;
@ -514,7 +504,7 @@ unsigned int exynos_dp_write_byte_to_dpcd(unsigned int reg_addr,
writel(reg, &dp_regs->aux_ch_ctl1);
/* Start AUX transaction */
ret = exynos_dp_start_aux_transaction();
ret = exynos_dp_start_aux_transaction(dp_regs);
if (ret != EXYNOS_DP_SUCCESS) {
printf("DP Aux transaction failed\n");
return ret;
@ -523,8 +513,9 @@ unsigned int exynos_dp_write_byte_to_dpcd(unsigned int reg_addr,
return ret;
}
unsigned int exynos_dp_read_byte_from_dpcd(unsigned int reg_addr,
unsigned char *data)
unsigned int exynos_dp_read_byte_from_dpcd(struct exynos_dp *dp_regs,
unsigned int reg_addr,
unsigned char *data)
{
unsigned int reg;
int retval;
@ -550,7 +541,7 @@ unsigned int exynos_dp_read_byte_from_dpcd(unsigned int reg_addr,
writel(reg, &dp_regs->aux_ch_ctl1);
/* Start AUX transaction */
retval = exynos_dp_start_aux_transaction();
retval = exynos_dp_start_aux_transaction(dp_regs);
if (!retval)
debug("DP Aux Transaction fail!\n");
@ -561,9 +552,10 @@ unsigned int exynos_dp_read_byte_from_dpcd(unsigned int reg_addr,
return retval;
}
unsigned int exynos_dp_write_bytes_to_dpcd(unsigned int reg_addr,
unsigned int count,
unsigned char data[])
unsigned int exynos_dp_write_bytes_to_dpcd(struct exynos_dp *dp_regs,
unsigned int reg_addr,
unsigned int count,
unsigned char data[])
{
unsigned int reg;
unsigned int start_offset;
@ -610,7 +602,7 @@ unsigned int exynos_dp_write_bytes_to_dpcd(unsigned int reg_addr,
writel(reg, &dp_regs->aux_ch_ctl1);
/* Start AUX transaction */
ret = exynos_dp_start_aux_transaction();
ret = exynos_dp_start_aux_transaction(dp_regs);
if (ret != EXYNOS_DP_SUCCESS) {
if (retry_cnt == 0) {
printf("DP Aux Transaction failed\n");
@ -626,9 +618,10 @@ unsigned int exynos_dp_write_bytes_to_dpcd(unsigned int reg_addr,
return ret;
}
unsigned int exynos_dp_read_bytes_from_dpcd(unsigned int reg_addr,
unsigned int count,
unsigned char data[])
unsigned int exynos_dp_read_bytes_from_dpcd(struct exynos_dp *dp_regs,
unsigned int reg_addr,
unsigned int count,
unsigned char data[])
{
unsigned int reg;
unsigned int start_offset;
@ -668,7 +661,7 @@ unsigned int exynos_dp_read_bytes_from_dpcd(unsigned int reg_addr,
writel(reg, &dp_regs->aux_ch_ctl1);
/* Start AUX transaction */
ret = exynos_dp_start_aux_transaction();
ret = exynos_dp_start_aux_transaction(dp_regs);
if (ret != EXYNOS_DP_SUCCESS) {
if (retry_cnt == 0) {
printf("DP Aux Transaction failed\n");
@ -692,8 +685,8 @@ unsigned int exynos_dp_read_bytes_from_dpcd(unsigned int reg_addr,
return ret;
}
int exynos_dp_select_i2c_device(unsigned int device_addr,
unsigned int reg_addr)
int exynos_dp_select_i2c_device(struct exynos_dp *dp_regs,
unsigned int device_addr, unsigned int reg_addr)
{
unsigned int reg;
int retval;
@ -717,16 +710,16 @@ int exynos_dp_select_i2c_device(unsigned int device_addr,
writel(reg, &dp_regs->aux_ch_ctl1);
/* Start AUX transaction */
retval = exynos_dp_start_aux_transaction();
retval = exynos_dp_start_aux_transaction(dp_regs);
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)
int exynos_dp_read_byte_from_i2c(struct exynos_dp *dp_regs,
unsigned int device_addr,
unsigned int reg_addr, unsigned int *data)
{
unsigned int reg;
int i;
@ -738,7 +731,8 @@ int exynos_dp_read_byte_from_i2c(unsigned int device_addr,
writel(reg, &dp_regs->buffer_data_ctl);
/* Select EDID device */
retval = exynos_dp_select_i2c_device(device_addr, reg_addr);
retval = exynos_dp_select_i2c_device(dp_regs, device_addr,
reg_addr);
if (retval != 0) {
printf("DP Select EDID device fail. retry !\n");
continue;
@ -754,7 +748,7 @@ int exynos_dp_read_byte_from_i2c(unsigned int device_addr,
writel(reg, &dp_regs->aux_ch_ctl1);
/* Start AUX transaction */
retval = exynos_dp_start_aux_transaction();
retval = exynos_dp_start_aux_transaction(dp_regs);
if (retval != EXYNOS_DP_SUCCESS)
printf("%s: DP Aux Transaction fail!\n", __func__);
}
@ -766,8 +760,10 @@ int exynos_dp_read_byte_from_i2c(unsigned int device_addr,
return retval;
}
int exynos_dp_read_bytes_from_i2c(unsigned int device_addr,
unsigned int reg_addr, unsigned int count, unsigned char edid[])
int exynos_dp_read_bytes_from_i2c(struct exynos_dp *dp_regs,
unsigned int device_addr,
unsigned int reg_addr, unsigned int count,
unsigned char edid[])
{
unsigned int reg;
unsigned int i, j;
@ -791,9 +787,8 @@ int exynos_dp_read_bytes_from_i2c(unsigned int device_addr,
* request without sending addres
*/
if (!defer)
retval =
exynos_dp_select_i2c_device(device_addr,
reg_addr + i);
retval = exynos_dp_select_i2c_device(
dp_regs, device_addr, reg_addr + i);
else
defer = 0;
@ -809,7 +804,8 @@ int exynos_dp_read_bytes_from_i2c(unsigned int device_addr,
writel(reg, &dp_regs->aux_ch_ctl1);
/* Start AUX transaction */
retval = exynos_dp_start_aux_transaction();
retval = exynos_dp_start_aux_transaction(
dp_regs);
if (retval == 0)
break;
else
@ -834,7 +830,7 @@ int exynos_dp_read_bytes_from_i2c(unsigned int device_addr,
return retval;
}
void exynos_dp_reset_macro(void)
void exynos_dp_reset_macro(struct exynos_dp *dp_regs)
{
unsigned int reg;
@ -849,7 +845,8 @@ void exynos_dp_reset_macro(void)
writel(reg, &dp_regs->phy_test);
}
void exynos_dp_set_link_bandwidth(unsigned char bwtype)
void exynos_dp_set_link_bandwidth(struct exynos_dp *dp_regs,
unsigned char bwtype)
{
unsigned int reg;
@ -860,7 +857,7 @@ void exynos_dp_set_link_bandwidth(unsigned char bwtype)
writel(reg, &dp_regs->link_bw_set);
}
unsigned char exynos_dp_get_link_bandwidth(void)
unsigned char exynos_dp_get_link_bandwidth(struct exynos_dp *dp_regs)
{
unsigned char ret;
unsigned int reg;
@ -871,7 +868,7 @@ unsigned char exynos_dp_get_link_bandwidth(void)
return ret;
}
void exynos_dp_set_lane_count(unsigned char count)
void exynos_dp_set_lane_count(struct exynos_dp *dp_regs, unsigned char count)
{
unsigned int reg;
@ -882,7 +879,7 @@ void exynos_dp_set_lane_count(unsigned char count)
writel(reg, &dp_regs->lane_count_set);
}
unsigned int exynos_dp_get_lane_count(void)
unsigned int exynos_dp_get_lane_count(struct exynos_dp *dp_regs)
{
unsigned int reg;
@ -891,7 +888,8 @@ unsigned int exynos_dp_get_lane_count(void)
return reg;
}
unsigned char exynos_dp_get_lanex_pre_emphasis(unsigned char lanecnt)
unsigned char exynos_dp_get_lanex_pre_emphasis(struct exynos_dp *dp_regs,
unsigned char lanecnt)
{
unsigned int reg_list[DP_LANE_CNT_4] = {
(unsigned int)&dp_regs->ln0_link_training_ctl,
@ -903,8 +901,9 @@ unsigned char exynos_dp_get_lanex_pre_emphasis(unsigned char lanecnt)
return readl(reg_list[lanecnt]);
}
void exynos_dp_set_lanex_pre_emphasis(unsigned char request_val,
unsigned char lanecnt)
void exynos_dp_set_lanex_pre_emphasis(struct exynos_dp *dp_regs,
unsigned char request_val,
unsigned char lanecnt)
{
unsigned int reg_list[DP_LANE_CNT_4] = {
(unsigned int)&dp_regs->ln0_link_training_ctl,
@ -916,7 +915,8 @@ void exynos_dp_set_lanex_pre_emphasis(unsigned char request_val,
writel(request_val, reg_list[lanecnt]);
}
void exynos_dp_set_lane_pre_emphasis(unsigned int level, unsigned char lanecnt)
void exynos_dp_set_lane_pre_emphasis(struct exynos_dp *dp_regs,
unsigned int level, unsigned char lanecnt)
{
unsigned char i;
unsigned int reg;
@ -939,7 +939,8 @@ void exynos_dp_set_lane_pre_emphasis(unsigned int level, unsigned char lanecnt)
}
}
void exynos_dp_set_training_pattern(unsigned int pattern)
void exynos_dp_set_training_pattern(struct exynos_dp *dp_regs,
unsigned int pattern)
{
unsigned int reg = 0;
@ -967,7 +968,8 @@ void exynos_dp_set_training_pattern(unsigned int pattern)
writel(reg, &dp_regs->training_ptn_set);
}
void exynos_dp_enable_enhanced_mode(unsigned char enable)
void exynos_dp_enable_enhanced_mode(struct exynos_dp *dp_regs,
unsigned char enable)
{
unsigned int reg;
@ -980,7 +982,7 @@ void exynos_dp_enable_enhanced_mode(unsigned char enable)
writel(reg, &dp_regs->sys_ctl4);
}
void exynos_dp_enable_scrambling(unsigned int enable)
void exynos_dp_enable_scrambling(struct exynos_dp *dp_regs, unsigned int enable)
{
unsigned int reg;
@ -993,7 +995,7 @@ void exynos_dp_enable_scrambling(unsigned int enable)
writel(reg, &dp_regs->training_ptn_set);
}
int exynos_dp_init_video(void)
int exynos_dp_init_video(struct exynos_dp *dp_regs)
{
unsigned int reg;
@ -1008,7 +1010,8 @@ int exynos_dp_init_video(void)
return 0;
}
void exynos_dp_config_video_slave_mode(struct edp_video_info *video_info)
void exynos_dp_config_video_slave_mode(struct exynos_dp *dp_regs,
struct edp_video_info *video_info)
{
unsigned int reg;
@ -1041,7 +1044,8 @@ void exynos_dp_config_video_slave_mode(struct edp_video_info *video_info)
writel(reg, &dp_regs->soc_general_ctl);
}
void exynos_dp_set_video_color_format(struct edp_video_info *video_info)
void exynos_dp_set_video_color_format(struct exynos_dp *dp_regs,
struct edp_video_info *video_info)
{
unsigned int reg;
@ -1061,7 +1065,8 @@ void exynos_dp_set_video_color_format(struct edp_video_info *video_info)
writel(reg, &dp_regs->video_ctl3);
}
int exynos_dp_config_video_bist(struct edp_device_info *edp_info)
int exynos_dp_config_video_bist(struct exynos_dp *dp_regs,
struct edp_device_info *edp_info)
{
unsigned int reg;
unsigned int bist_type = 0;
@ -1151,7 +1156,7 @@ int exynos_dp_config_video_bist(struct edp_device_info *edp_info)
return 0;
}
unsigned int exynos_dp_is_slave_video_stream_clock_on(void)
unsigned int exynos_dp_is_slave_video_stream_clock_on(struct exynos_dp *dp_regs)
{
unsigned int reg;
@ -1169,8 +1174,8 @@ unsigned int exynos_dp_is_slave_video_stream_clock_on(void)
return EXYNOS_DP_SUCCESS;
}
void exynos_dp_set_video_cr_mn(unsigned int type, unsigned int m_value,
unsigned int n_value)
void exynos_dp_set_video_cr_mn(struct exynos_dp *dp_regs, unsigned int type,
unsigned int m_value, unsigned int n_value)
{
unsigned int reg;
@ -1198,7 +1203,8 @@ void exynos_dp_set_video_cr_mn(unsigned int type, unsigned int m_value,
}
}
void exynos_dp_set_video_timing_mode(unsigned int type)
void exynos_dp_set_video_timing_mode(struct exynos_dp *dp_regs,
unsigned int type)
{
unsigned int reg;
@ -1211,7 +1217,8 @@ void exynos_dp_set_video_timing_mode(unsigned int type)
writel(reg, &dp_regs->video_ctl10);
}
void exynos_dp_enable_video_master(unsigned int enable)
void exynos_dp_enable_video_master(struct exynos_dp *dp_regs,
unsigned int enable)
{
unsigned int reg;
@ -1227,7 +1234,7 @@ void exynos_dp_enable_video_master(unsigned int enable)
writel(reg, &dp_regs->soc_general_ctl);
}
void exynos_dp_start_video(void)
void exynos_dp_start_video(struct exynos_dp *dp_regs)
{
unsigned int reg;
@ -1237,7 +1244,7 @@ void exynos_dp_start_video(void)
writel(reg, &dp_regs->video_ctl1);
}
unsigned int exynos_dp_is_video_stream_on(void)
unsigned int exynos_dp_is_video_stream_on(struct exynos_dp *dp_regs)
{
unsigned int reg;

131
drivers/video/exynos/exynos_dp_lowlevel.h
View File

@ -9,60 +9,81 @@
#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);
void exynos_dp_set_base_addr(void);
void exynos_dp_enable_video_bist(struct exynos_dp *dp_regs,
unsigned int enable);
void exynos_dp_enable_video_mute(struct exynos_dp *dp_regs,
unsigned int enable);
void exynos_dp_reset(struct exynos_dp *dp_regs);
void exynos_dp_enable_sw_func(struct exynos_dp *dp_regs, unsigned int enable);
unsigned int exynos_dp_set_analog_power_down(struct exynos_dp *dp_regs,
unsigned int block, u32 enable);
unsigned int exynos_dp_get_pll_lock_status(struct exynos_dp *dp_regs);
int exynos_dp_init_analog_func(struct exynos_dp *dp_regs);
void exynos_dp_init_hpd(struct exynos_dp *dp_regs);
void exynos_dp_init_aux(struct exynos_dp *dp_regs);
void exynos_dp_config_interrupt(struct exynos_dp *dp_regs);
unsigned int exynos_dp_get_plug_in_status(struct exynos_dp *dp_regs);
unsigned int exynos_dp_detect_hpd(struct exynos_dp *dp_regs);
unsigned int exynos_dp_start_aux_transaction(struct exynos_dp *dp_regs);
unsigned int exynos_dp_write_byte_to_dpcd(struct exynos_dp *dp_regs,
unsigned int reg_addr,
unsigned char data);
unsigned int exynos_dp_read_byte_from_dpcd(struct exynos_dp *dp_regs,
unsigned int reg_addr,
unsigned char *data);
unsigned int exynos_dp_write_bytes_to_dpcd(struct exynos_dp *dp_regs,
unsigned int reg_addr,
unsigned int count,
unsigned char data[]);
unsigned int exynos_dp_read_bytes_from_dpcd(struct exynos_dp *dp_regs,
unsigned int reg_addr,
unsigned int count,
unsigned char data[]);
int exynos_dp_select_i2c_device(struct exynos_dp *dp_regs,
unsigned int device_addr,
unsigned int reg_addr);
int exynos_dp_read_byte_from_i2c(struct exynos_dp *dp_regs,
unsigned int device_addr,
unsigned int reg_addr, unsigned int *data);
int exynos_dp_read_bytes_from_i2c(struct exynos_dp *dp_regs,
unsigned int device_addr,
unsigned int reg_addr, unsigned int count,
unsigned char edid[]);
void exynos_dp_reset_macro(struct exynos_dp *dp_regs);
void exynos_dp_set_link_bandwidth(struct exynos_dp *dp_regs,
unsigned char bwtype);
unsigned char exynos_dp_get_link_bandwidth(struct exynos_dp *dp_regs);
void exynos_dp_set_lane_count(struct exynos_dp *dp_regs, unsigned char count);
unsigned int exynos_dp_get_lane_count(struct exynos_dp *dp_regs);
unsigned char exynos_dp_get_lanex_pre_emphasis(struct exynos_dp *dp_regs,
unsigned char lanecnt);
void exynos_dp_set_lane_pre_emphasis(struct exynos_dp *dp_regs,
unsigned int level, unsigned char lanecnt);
void exynos_dp_set_lanex_pre_emphasis(struct exynos_dp *dp_regs,
unsigned char request_val,
unsigned char lanecnt);
void exynos_dp_set_training_pattern(struct exynos_dp *dp_regs,
unsigned int pattern);
void exynos_dp_enable_enhanced_mode(struct exynos_dp *dp_regs,
unsigned char enable);
void exynos_dp_enable_scrambling(struct exynos_dp *dp_regs,
unsigned int enable);
int exynos_dp_init_video(struct exynos_dp *dp_regs);
void exynos_dp_config_video_slave_mode(struct exynos_dp *dp_regs,
struct edp_video_info *video_info);
void exynos_dp_set_video_color_format(struct exynos_dp *dp_regs,
struct edp_video_info *video_info);
int exynos_dp_config_video_bist(struct exynos_dp *dp_regs,
struct edp_device_info *edp_info);
unsigned int exynos_dp_is_slave_video_stream_clock_on(
struct exynos_dp *dp_regs);
void exynos_dp_set_video_cr_mn(struct exynos_dp *dp_regs, unsigned int type,
unsigned int m_value, unsigned int n_value);
void exynos_dp_set_video_timing_mode(struct exynos_dp *dp_regs,
unsigned int type);
void exynos_dp_enable_video_master(struct exynos_dp *dp_regs,
unsigned int enable);
void exynos_dp_start_video(struct exynos_dp *dp_regs);
unsigned int exynos_dp_is_video_stream_on(struct exynos_dp *dp_regs);
#endif /* _EXYNOS_DP_LOWLEVEL_H */