XTAL_FRQ_SEL, XTAL_FRQ_27M);
}
+static int anx7625_hpd_timer_config(struct anx7625_data *ctx)
+{
+ int ret;
+
+ /* Set irq detect window to 2ms */
+ ret = anx7625_reg_write(ctx, ctx->i2c.tx_p2_client,
+ HPD_DET_TIMER_BIT0_7, HPD_TIME & 0xFF);
+ ret |= anx7625_reg_write(ctx, ctx->i2c.tx_p2_client,
+ HPD_DET_TIMER_BIT8_15,
+ (HPD_TIME >> 8) & 0xFF);
+ ret |= anx7625_reg_write(ctx, ctx->i2c.tx_p2_client,
+ HPD_DET_TIMER_BIT16_23,
+ (HPD_TIME >> 16) & 0xFF);
+
+ return ret;
+}
+
+static int anx7625_read_hpd_gpio_config_status(struct anx7625_data *ctx)
+{
+ return anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, GPIO_CTRL_2);
+}
+
static void anx7625_disable_pd_protocol(struct anx7625_data *ctx)
{
struct device *dev = ctx->dev;
- int ret;
+ int ret, val;
/* Reset main ocm */
ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, 0x88, 0x40);
DRM_DEV_DEBUG_DRIVER(dev, "disable PD feature fail.\n");
else
DRM_DEV_DEBUG_DRIVER(dev, "disable PD feature succeeded.\n");
+
+ /*
+ * Make sure the HPD GPIO already be configured after OCM release before
+ * setting HPD detect window register. Here we poll the status register
+ * at maximum 40ms, then config HPD irq detect window register
+ */
+ readx_poll_timeout(anx7625_read_hpd_gpio_config_status,
+ ctx, val,
+ ((val & HPD_SOURCE) || (val < 0)),
+ 2000, 2000 * 20);
+
+ /* Set HPD irq detect window to 2ms */
+ anx7625_hpd_timer_config(ctx);
}
static int anx7625_ocm_loading_check(struct anx7625_data *ctx)
static int anx7625_read_hpd_status_p0(struct anx7625_data *ctx)
{
- int ret;
-
- /* Set irq detect window to 2ms */
- ret = anx7625_reg_write(ctx, ctx->i2c.tx_p2_client,
- HPD_DET_TIMER_BIT0_7, HPD_TIME & 0xFF);
- ret |= anx7625_reg_write(ctx, ctx->i2c.tx_p2_client,
- HPD_DET_TIMER_BIT8_15,
- (HPD_TIME >> 8) & 0xFF);
- ret |= anx7625_reg_write(ctx, ctx->i2c.tx_p2_client,
- HPD_DET_TIMER_BIT16_23,
- (HPD_TIME >> 16) & 0xFF);
- if (ret < 0)
- return ret;
-
return anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, SYSTEM_STSTUS);
}
if (ctx->pdata.intp_irq)
return 0;
- /* Delay 200ms for FW HPD de-bounce */
- msleep(200);
-
ret = readx_poll_timeout(anx7625_read_hpd_status_p0,
ctx, val,
((val & HPD_STATUS) || (val < 0)),