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drm/bridge: lt9611: disable hpd for lower firmware version

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The firmware version which less than 0x40 did not support hpd,
so do not enable hpd for it.

Change-Id: Ic3567b42834fe060e494f859f007e7dc3657e7b7
Signed-off-by: Yuan Zhao <yzhao@codeaurora.org>
This commit is contained in:
Yuan Zhao
2020-05-07 13:19:50 +08:00
committed by Gerrit - the friendly Code Review server
parent 2f9a4a4b7a
commit 2a37e9d67f
1 changed files with 8 additions and 2 deletions
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10
drivers/gpu/drm/bridge/lt9611uxc.c
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@@ -125,6 +125,7 @@ struct lt9611 {
u8 i2c_wbuf[WRITE_BUF_MAX_SIZE]; u8 i2c_wbuf[WRITE_BUF_MAX_SIZE];
u8 i2c_rbuf[READ_BUF_MAX_SIZE]; u8 i2c_rbuf[READ_BUF_MAX_SIZE];
bool hdmi_mode; bool hdmi_mode;
bool hpd_support;
enum lt9611_fw_upgrade_status fw_status; enum lt9611_fw_upgrade_status fw_status;
}; };
@@ -1302,7 +1303,7 @@ lt9611_connector_detect(struct drm_connector *connector, bool force)
struct lt9611 *pdata = connector_to_lt9611(connector); struct lt9611 *pdata = connector_to_lt9611(connector);
pdata->status = connector_status_disconnected; pdata->status = connector_status_disconnected;
if (force) { if (force && pdata->hpd_support) {
lt9611_write_byte(pdata, 0xFF, 0x80); lt9611_write_byte(pdata, 0xFF, 0x80);
lt9611_write_byte(pdata, 0xEE, 0x01); lt9611_write_byte(pdata, 0xEE, 0x01);
lt9611_write_byte(pdata, 0xFF, 0xB0); lt9611_write_byte(pdata, 0xFF, 0xB0);
@@ -1668,6 +1669,7 @@ static int lt9611_probe(struct i2c_client *client,
{ {
struct lt9611 *pdata; struct lt9611 *pdata;
int ret = 0; int ret = 0;
u8 chip_version = 0;
if (!client || !client->dev.of_node) { if (!client || !client->dev.of_node) {
pr_err("invalid input\n"); pr_err("invalid input\n");
@@ -1730,8 +1732,12 @@ static int lt9611_probe(struct i2c_client *client,
goto err_i2c_prog; goto err_i2c_prog;
} }
if (lt9611_get_version(pdata)) { chip_version = lt9611_get_version(pdata);
pdata->hpd_support = false;
if (chip_version) {
pr_info("LT9611 works, no need to upgrade FW\n"); pr_info("LT9611 works, no need to upgrade FW\n");
if (chip_version >= 0x40)
pdata->hpd_support = true;
} else { } else {
ret = request_firmware_nowait(THIS_MODULE, true, ret = request_firmware_nowait(THIS_MODULE, true,
"lt9611_fw.bin", &client->dev, GFP_KERNEL, pdata, "lt9611_fw.bin", &client->dev, GFP_KERNEL, pdata,