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media: i2c: lt6911uxc: update driver to v0.01.02

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v0.01.01: fix if plugin_gpio was not used
v0.01.02: modify driver init level to late_initcall

Signed-off-by: Jianwei Fan <jianwei.fan@rock-chips.com>
Change-Id: I3b15bed365552aa0dbaf8a8126400597caa96ed6
This commit is contained in:
Jianwei Fan
2021-11-29 20:31:36 +08:00
committed by Tao Huang
parent 8880c05e5a
commit 8c39b46063
1 changed files with 27 additions and 16 deletions
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43
drivers/media/i2c/lt6911uxc.c
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@@ -3,6 +3,9 @@
* Copyright (c) 2021 Rockchip Electronics Co. Ltd.
*
* Author: Dingxian Wen <shawn.wen@rock-chips.com>
* V0.0X01.0X00 first version.
* V0.0X01.0X01 fix if plugin_gpio was not used.
* V0.0X01.0X02 modify driver init level to late_initcall.
*/
#include <linux/clk.h>
@@ -30,7 +33,7 @@
#include <media/v4l2-fwnode.h>
#include "lt6911uxc.h"
#define DRIVER_VERSION KERNEL_VERSION(0, 0x01, 0x0)
#define DRIVER_VERSION KERNEL_VERSION(0, 0x01, 0x2)
#define LT6911UXC_NAME "LT6911UXC"
#define LT6911UXC_LINK_FREQ_HIGH 400000000
@@ -287,14 +290,27 @@ static void lt6911uxc_i2c_disable(struct v4l2_subdev *sd)
static inline bool tx_5v_power_present(struct v4l2_subdev *sd)
{
int val;
bool ret;
int val, i, cnt;
struct lt6911uxc *lt6911uxc = to_state(sd);
val = gpiod_get_value(lt6911uxc->plugin_det_gpio);
v4l2_dbg(1, debug, sd, "%s plug det: %s!\n", __func__,
(val > 0) ? "int" : "out");
/* if not use plugin det gpio */
if (!lt6911uxc->plugin_det_gpio)
return true;
return (val > 0);
cnt = 0;
for (i = 0; i < 5; i++) {
val = gpiod_get_value(lt6911uxc->plugin_det_gpio);
if (val > 0)
cnt++;
usleep_range(500, 600);
}
ret = (cnt >= 3) ? true : false;
v4l2_dbg(1, debug, sd, "%s: %d\n", __func__, ret);
return ret;
}
static inline bool no_signal(struct v4l2_subdev *sd)
@@ -1355,20 +1371,15 @@ static int lt6911uxc_probe(struct i2c_client *client,
}
lt6911uxc->plugin_irq = gpiod_to_irq(lt6911uxc->plugin_det_gpio);
if (lt6911uxc->plugin_irq < 0) {
dev_err(dev, "failed to get plugin det irq\n");
err = lt6911uxc->plugin_irq;
goto err_work_queues;
}
if (lt6911uxc->plugin_irq < 0)
dev_err(dev, "failed to get plugin det irq, maybe no use\n");
err = devm_request_threaded_irq(dev, lt6911uxc->plugin_irq, NULL,
plugin_detect_irq_handler, IRQF_TRIGGER_FALLING |
IRQF_TRIGGER_RISING | IRQF_ONESHOT, "lt6911uxc",
lt6911uxc);
if (err) {
dev_err(dev, "failed to register plugin det irq (%d)\n", err);
goto err_work_queues;
}
if (err)
dev_err(dev, "failed to register plugin det irq (%d), maybe no use\n", err);
err = v4l2_ctrl_handler_setup(sd->ctrl_handler);
if (err) {
@@ -1441,7 +1452,7 @@ static void __exit lt6911uxc_driver_exit(void)
i2c_del_driver(&lt6911uxc_driver);
}
device_initcall_sync(lt6911uxc_driver_init);
late_initcall(lt6911uxc_driver_init);
module_exit(lt6911uxc_driver_exit);
MODULE_DESCRIPTION("Lontium LT6911UXC HDMI to MIPI CSI-2 bridge driver");