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Message-Id: <1341974086-27887-1-git-send-email-federico.vaga@gmail.com>
Date: Wed, 11 Jul 2012 04:34:46 +0200
From: Federico Vaga <federico.vaga@...il.com>
To: Mauro Carvalho Chehab <mchehab@...radead.org>
Cc: Giancarlo Asnaghi <giancarlo.asnaghi@...com>,
linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
Hans Verkuil <hverkuil@...all.nl>,
Federico Vaga <federico.vaga@...il.com>
Subject: [PATCH RFC] [media] adv7180.c: convert to v4l2 control framework
Signed-off-by: Federico Vaga <federico.vaga@...il.com>
---
drivers/media/video/adv7180.c | 221 +++++++++++++++++------------------------
1 file changed, 90 insertions(+), 131 deletions(-)
diff --git a/drivers/media/video/adv7180.c b/drivers/media/video/adv7180.c
index 174bffa..7705456 100644
--- a/drivers/media/video/adv7180.c
+++ b/drivers/media/video/adv7180.c
@@ -26,11 +26,10 @@
#include <media/v4l2-ioctl.h>
#include <linux/videodev2.h>
#include <media/v4l2-device.h>
+#include <media/v4l2-ctrls.h>
#include <media/v4l2-chip-ident.h>
#include <linux/mutex.h>
-#define DRIVER_NAME "adv7180"
-
#define ADV7180_INPUT_CONTROL_REG 0x00
#define ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM 0x00
#define ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM_PED 0x10
@@ -55,21 +54,21 @@
#define ADV7180_AUTODETECT_ENABLE_REG 0x07
#define ADV7180_AUTODETECT_DEFAULT 0x7f
-
+/* Contrast */
#define ADV7180_CON_REG 0x08 /*Unsigned */
-#define CON_REG_MIN 0
-#define CON_REG_DEF 128
-#define CON_REG_MAX 255
-
+#define ADV7180_CON_MIN 0
+#define ADV7180_CON_DEF 128
+#define ADV7180_CON_MAX 255
+/* Brightness*/
#define ADV7180_BRI_REG 0x0a /*Signed */
-#define BRI_REG_MIN -128
-#define BRI_REG_DEF 0
-#define BRI_REG_MAX 127
-
+#define ADV7180_BRI_MIN -128
+#define ADV7180_BRI_DEF 0
+#define ADV7180_BRI_MAX 127
+/* Hue */
#define ADV7180_HUE_REG 0x0b /*Signed, inverted */
-#define HUE_REG_MIN -127
-#define HUE_REG_DEF 0
-#define HUE_REG_MAX 128
+#define ADV7180_HUE_MIN -127
+#define ADV7180_HUE_DEF 0
+#define ADV7180_HUE_MAX 128
#define ADV7180_ADI_CTRL_REG 0x0e
#define ADV7180_ADI_CTRL_IRQ_SPACE 0x20
@@ -98,12 +97,12 @@
#define ADV7180_ICONF1_ACTIVE_LOW 0x01
#define ADV7180_ICONF1_PSYNC_ONLY 0x10
#define ADV7180_ICONF1_ACTIVE_TO_CLR 0xC0
-
+/* Saturation */
#define ADV7180_SD_SAT_CB_REG 0xe3 /*Unsigned */
#define ADV7180_SD_SAT_CR_REG 0xe4 /*Unsigned */
-#define SAT_REG_MIN 0
-#define SAT_REG_DEF 128
-#define SAT_REG_MAX 255
+#define ADV7180_SAT_MIN 0
+#define ADV7180_SAT_DEF 128
+#define ADV7180_SAT_MAX 255
#define ADV7180_IRQ1_LOCK 0x01
#define ADV7180_IRQ1_UNLOCK 0x02
@@ -121,18 +120,18 @@
#define ADV7180_NTSC_V_BIT_END_MANUAL_NVEND 0x4F
struct adv7180_state {
+ struct v4l2_ctrl_handler ctrl_hdl;
struct v4l2_subdev sd;
struct work_struct work;
struct mutex mutex; /* mutual excl. when accessing chip */
int irq;
v4l2_std_id curr_norm;
bool autodetect;
- s8 brightness;
- s16 hue;
- u8 contrast;
- u8 saturation;
u8 input;
};
+#define to_adv7180_sd(_ctrl) &container_of(_ctrl->handler, \
+ struct adv7180_state, \
+ ctrl_hdl)->sd
static v4l2_std_id adv7180_std_to_v4l2(u8 status1)
{
@@ -237,7 +236,7 @@ static int adv7180_s_routing(struct v4l2_subdev *sd, u32 input,
if (ret)
return ret;
- /*We cannot discriminate between LQFP and 40-pin LFCSP, so accept
+ /* We cannot discriminate between LQFP and 40-pin LFCSP, so accept
* all inputs and let the card driver take care of validation
*/
if ((input & ADV7180_INPUT_CONTROL_INSEL_MASK) != input)
@@ -316,117 +315,39 @@ out:
return ret;
}
-static int adv7180_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
-{
- switch (qc->id) {
- case V4L2_CID_BRIGHTNESS:
- return v4l2_ctrl_query_fill(qc, BRI_REG_MIN, BRI_REG_MAX,
- 1, BRI_REG_DEF);
- case V4L2_CID_HUE:
- return v4l2_ctrl_query_fill(qc, HUE_REG_MIN, HUE_REG_MAX,
- 1, HUE_REG_DEF);
- case V4L2_CID_CONTRAST:
- return v4l2_ctrl_query_fill(qc, CON_REG_MIN, CON_REG_MAX,
- 1, CON_REG_DEF);
- case V4L2_CID_SATURATION:
- return v4l2_ctrl_query_fill(qc, SAT_REG_MIN, SAT_REG_MAX,
- 1, SAT_REG_DEF);
- default:
- break;
- }
-
- return -EINVAL;
-}
-
-static int adv7180_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
-{
- struct adv7180_state *state = to_state(sd);
- int ret = mutex_lock_interruptible(&state->mutex);
- if (ret)
- return ret;
-
- switch (ctrl->id) {
- case V4L2_CID_BRIGHTNESS:
- ctrl->value = state->brightness;
- break;
- case V4L2_CID_HUE:
- ctrl->value = state->hue;
- break;
- case V4L2_CID_CONTRAST:
- ctrl->value = state->contrast;
- break;
- case V4L2_CID_SATURATION:
- ctrl->value = state->saturation;
- break;
- default:
- ret = -EINVAL;
- }
-
- mutex_unlock(&state->mutex);
- return ret;
-}
-
-static int adv7180_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
+static int adv7180_s_ctrl(struct v4l2_ctrl *ctrl)
{
+ struct v4l2_subdev *sd = to_adv7180_sd(ctrl);
struct adv7180_state *state = to_state(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
int ret = mutex_lock_interruptible(&state->mutex);
+ int val;
+
if (ret)
return ret;
-
+ val = ctrl->val;
switch (ctrl->id) {
case V4L2_CID_BRIGHTNESS:
- if ((ctrl->value > BRI_REG_MAX)
- || (ctrl->value < BRI_REG_MIN)) {
- ret = -ERANGE;
- break;
- }
- state->brightness = ctrl->value;
- ret = i2c_smbus_write_byte_data(client,
- ADV7180_BRI_REG,
- state->brightness);
+ ret = i2c_smbus_write_byte_data(client, ADV7180_BRI_REG, val);
break;
case V4L2_CID_HUE:
- if ((ctrl->value > HUE_REG_MAX)
- || (ctrl->value < HUE_REG_MIN)) {
- ret = -ERANGE;
- break;
- }
- state->hue = ctrl->value;
/*Hue is inverted according to HSL chart */
- ret = i2c_smbus_write_byte_data(client,
- ADV7180_HUE_REG, -state->hue);
+ ret = i2c_smbus_write_byte_data(client, ADV7180_HUE_REG, -val);
break;
case V4L2_CID_CONTRAST:
- if ((ctrl->value > CON_REG_MAX)
- || (ctrl->value < CON_REG_MIN)) {
- ret = -ERANGE;
- break;
- }
- state->contrast = ctrl->value;
- ret = i2c_smbus_write_byte_data(client,
- ADV7180_CON_REG,
- state->contrast);
+ ret = i2c_smbus_write_byte_data(client, ADV7180_CON_REG, val);
break;
case V4L2_CID_SATURATION:
- if ((ctrl->value > SAT_REG_MAX)
- || (ctrl->value < SAT_REG_MIN)) {
- ret = -ERANGE;
- break;
- }
/*
*This could be V4L2_CID_BLUE_BALANCE/V4L2_CID_RED_BALANCE
*Let's not confuse the user, everybody understands saturation
*/
- state->saturation = ctrl->value;
- ret = i2c_smbus_write_byte_data(client,
- ADV7180_SD_SAT_CB_REG,
- state->saturation);
+ ret = i2c_smbus_write_byte_data(client, ADV7180_SD_SAT_CB_REG,
+ val);
if (ret < 0)
break;
- ret = i2c_smbus_write_byte_data(client,
- ADV7180_SD_SAT_CR_REG,
- state->saturation);
+ ret = i2c_smbus_write_byte_data(client, ADV7180_SD_SAT_CR_REG,
+ val);
break;
default:
ret = -EINVAL;
@@ -436,6 +357,42 @@ static int adv7180_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
return ret;
}
+static const struct v4l2_ctrl_ops adv7180_ctrl_ops = {
+ .s_ctrl = adv7180_s_ctrl,
+};
+
+static int adv7180_init_controls(struct adv7180_state *state)
+{
+ v4l2_ctrl_handler_init(&state->ctrl_hdl, 2);
+
+ v4l2_ctrl_new_std(&state->ctrl_hdl, &adv7180_ctrl_ops,
+ V4L2_CID_BRIGHTNESS, ADV7180_BRI_MIN,
+ ADV7180_BRI_MAX, 1, ADV7180_BRI_DEF);
+ v4l2_ctrl_new_std(&state->ctrl_hdl, &adv7180_ctrl_ops,
+ V4L2_CID_CONTRAST, ADV7180_CON_MIN,
+ ADV7180_CON_MAX, 1, ADV7180_CON_DEF);
+ v4l2_ctrl_new_std(&state->ctrl_hdl, &adv7180_ctrl_ops,
+ V4L2_CID_SATURATION, ADV7180_SAT_MIN,
+ ADV7180_SAT_MAX, 1, ADV7180_SAT_DEF);
+ v4l2_ctrl_new_std(&state->ctrl_hdl, &adv7180_ctrl_ops,
+ V4L2_CID_HUE, ADV7180_HUE_MIN,
+ ADV7180_HUE_MAX, 1, ADV7180_HUE_DEF);
+ state->sd.ctrl_handler = &state->ctrl_hdl;
+ if (state->ctrl_hdl.error) {
+ int err = state->ctrl_hdl.error;
+
+ v4l2_ctrl_handler_free(&state->ctrl_hdl);
+ return err;
+ }
+ v4l2_ctrl_handler_setup(&state->ctrl_hdl);
+
+ return 0;
+}
+static void adv7180_exit_controls(struct adv7180_state *state)
+{
+ v4l2_ctrl_handler_free(&state->ctrl_hdl);
+}
+
static const struct v4l2_subdev_video_ops adv7180_video_ops = {
.querystd = adv7180_querystd,
.g_input_status = adv7180_g_input_status,
@@ -445,9 +402,9 @@ static const struct v4l2_subdev_video_ops adv7180_video_ops = {
static const struct v4l2_subdev_core_ops adv7180_core_ops = {
.g_chip_ident = adv7180_g_chip_ident,
.s_std = adv7180_s_std,
- .queryctrl = adv7180_queryctrl,
- .g_ctrl = adv7180_g_ctrl,
- .s_ctrl = adv7180_s_ctrl,
+ .queryctrl = v4l2_subdev_queryctrl,
+ .g_ctrl = v4l2_subdev_g_ctrl,
+ .s_ctrl = v4l2_subdev_s_ctrl,
};
static const struct v4l2_subdev_ops adv7180_ops = {
@@ -539,7 +496,7 @@ static int init_device(struct i2c_client *client, struct adv7180_state *state)
/* register for interrupts */
if (state->irq > 0) {
- ret = request_irq(state->irq, adv7180_irq, 0, DRIVER_NAME,
+ ret = request_irq(state->irq, adv7180_irq, 0, KBUILD_MODNAME,
state);
if (ret)
return ret;
@@ -582,26 +539,27 @@ static int init_device(struct i2c_client *client, struct adv7180_state *state)
/*Set default value for controls */
ret = i2c_smbus_write_byte_data(client, ADV7180_BRI_REG,
- state->brightness);
+ ADV7180_BRI_DEF);
if (ret < 0)
return ret;
- ret = i2c_smbus_write_byte_data(client, ADV7180_HUE_REG, state->hue);
+ ret = i2c_smbus_write_byte_data(client, ADV7180_HUE_REG,
+ ADV7180_HUE_DEF);
if (ret < 0)
return ret;
ret = i2c_smbus_write_byte_data(client, ADV7180_CON_REG,
- state->contrast);
+ ADV7180_CON_DEF);
if (ret < 0)
return ret;
ret = i2c_smbus_write_byte_data(client, ADV7180_SD_SAT_CB_REG,
- state->saturation);
+ ADV7180_SAT_DEF);
if (ret < 0)
return ret;
ret = i2c_smbus_write_byte_data(client, ADV7180_SD_SAT_CR_REG,
- state->saturation);
+ ADV7180_SAT_DEF);
if (ret < 0)
return ret;
@@ -632,25 +590,26 @@ static __devinit int adv7180_probe(struct i2c_client *client,
INIT_WORK(&state->work, adv7180_work);
mutex_init(&state->mutex);
state->autodetect = true;
- state->brightness = BRI_REG_DEF;
- state->hue = HUE_REG_DEF;
- state->contrast = CON_REG_DEF;
- state->saturation = SAT_REG_DEF;
state->input = 0;
sd = &state->sd;
v4l2_i2c_subdev_init(sd, client, &adv7180_ops);
- ret = init_device(client, state);
- if (0 != ret)
+ ret = adv7180_init_controls(state);
+ if (ret)
goto err_unreg_subdev;
+ ret = init_device(client, state);
+ if (ret)
+ goto err_free_ctrl;
return 0;
+err_free_ctrl:
+ adv7180_exit_controls(state);
err_unreg_subdev:
mutex_destroy(&state->mutex);
v4l2_device_unregister_subdev(sd);
kfree(state);
err:
- printk(KERN_ERR DRIVER_NAME ": Failed to probe: %d\n", ret);
+ printk(KERN_ERR KBUILD_MODNAME ": Failed to probe: %d\n", ret);
return ret;
}
@@ -678,7 +637,7 @@ static __devexit int adv7180_remove(struct i2c_client *client)
}
static const struct i2c_device_id adv7180_id[] = {
- {DRIVER_NAME, 0},
+ {KBUILD_MODNAME, 0},
{},
};
@@ -716,7 +675,7 @@ MODULE_DEVICE_TABLE(i2c, adv7180_id);
static struct i2c_driver adv7180_driver = {
.driver = {
.owner = THIS_MODULE,
- .name = DRIVER_NAME,
+ .name = KBUILD_MODNAME,
},
.probe = adv7180_probe,
.remove = __devexit_p(adv7180_remove),
--
1.7.10.4
--
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