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misc: rk628: gvi: check gvi state when enable

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Try to disable and enable GVI and TX phy when GVI lock failed.

Signed-off-by: Sandy Huang <hjc@rock-chips.com>
Change-Id: I190ed60884850946091185c89e54a7bb551eb03d
This commit is contained in:
Sandy Huang
2023-12-01 11:52:05 +08:00
committed by Tao Huang
parent 8676e40d7f
commit 7b983b2ecf
3 changed files with 29 additions and 0 deletions
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1
drivers/misc/rk628/rk628.h
View File

@@ -520,6 +520,7 @@ struct rk628_lvds {
struct rk628_gvi {
enum gvi_bus_format bus_format;
enum gvi_color_depth color_depth;
int retry_times;
uint8_t lanes;
bool division_mode;
bool frm_rst;

26
drivers/misc/rk628/rk628_gvi.c
View File

@@ -13,6 +13,8 @@
#include "rk628_gvi.h"
#include "panel.h"
#define GVI_RETRY_TIMEOUT 10
int rk628_gvi_parse(struct rk628 *rk628, struct device_node *gvi_np)
{
const char *string;
@@ -253,6 +255,7 @@ void rk628_gvi_enable(struct rk628 *rk628)
unsigned int rate;
u32 mask = SW_OUTPUT_MODE_MASK;
u32 val = SW_OUTPUT_MODE(OUTPUT_MODE_GVI);
int i = 0;
rk628_gvi_get_info(gvi);
rate = rk628_gvi_get_lane_rate(rk628);
@@ -276,6 +279,29 @@ void rk628_gvi_enable(struct rk628 *rk628)
rk628_gvi_enable_color_bar(rk628, gvi);
rk628_gvi_post_enable(rk628, gvi);
rk628_panel_enable(rk628);
for (i = 0; i < 100; i++) {
rk628_i2c_read(rk628, GVI_STATUS, &val);
if ((val & GVI_LOCKED_MASK) == GVI_LOCKED_STATUS)
break;
usleep_range(1000, 1100);
}
if (i == 100 && gvi->retry_times < GVI_RETRY_TIMEOUT) {
dev_info(rk628->dev, "GVI Lock failed: 0x%x, try again: %d\n", val, gvi->retry_times);
gvi->retry_times++;
rk628_gvi_disable(rk628);
usleep_range(50000, 51000);
rk628_gvi_enable(rk628);
}
if (gvi->retry_times >= GVI_RETRY_TIMEOUT && i == 100) {
dev_info(rk628->dev, "GVI Lock failed, please check hardware!\n");
return;
}
if (i != 100)
gvi->retry_times = 0;
dev_info(rk628->dev,
"GVI-Link bandwidth: %d x %d Mbps, Byte mode: %d, Color Depty: %d, %s division mode\n",
rate, gvi->lanes, gvi->byte_mode, gvi->color_depth,

2
drivers/misc/rk628/rk628_gvi.h
View File

@@ -20,6 +20,8 @@
#define GVI_SYS_RST HOSTREG(0x0014)
#define GVI_LINE_FLAG HOSTREG(0x0018)
#define GVI_STATUS HOSTREG(0x001c)
#define GVI_LOCKED_MASK 0x70
#define GVI_LOCKED_STATUS 0x40
#define GVI_PLL_LOCK_TIMEOUT HOSTREG(0x0030)
#define GVI_HTPDN_TIMEOUT HOSTREG(0x0034)
#define GVI_LOCKN_TIMEOUT HOSTREG(0x0038)