V4L/DVB: cs53l32a: convert to new control framework

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 68 insertions, 39 deletions

diff --git a/drivers/media/video/cs53l32a.c b/drivers/media/video/cs53l32a.c
index 3cc135a98d82..cc9e84d75ea7 100644
--- a/drivers/media/video/cs53l32a.c
+++ b/drivers/media/video/cs53l32a.c
@@ -26,10 +26,10 @@
 #include <linux/ioctl.h>
 #include <asm/uaccess.h>
 #include <linux/i2c.h>
-#include <linux/i2c-id.h>
 #include <linux/videodev2.h>
 #include <media/v4l2-device.h>
 #include <media/v4l2-chip-ident.h>
+#include <media/v4l2-ctrls.h>
 #include <media/v4l2-i2c-drv.h>
 
 MODULE_DESCRIPTION("i2c device driver for cs53l32a Audio ADC");
@@ -43,6 +43,21 @@ module_param(debug, bool, 0644);
 MODULE_PARM_DESC(debug, "Debugging messages, 0=Off (default), 1=On");
 
 
+struct cs53l32a_state {
+        struct v4l2_subdev sd;
+        struct v4l2_ctrl_handler hdl;
+};
+
+static inline struct cs53l32a_state *to_state(struct v4l2_subdev *sd)
+{
+        return container_of(sd, struct cs53l32a_state, sd);
+}
+
+static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
+{
+        return &container_of(ctrl->handler, struct cs53l32a_state, hdl)->sd;
+}
+
 /* ----------------------------------------------------------------------- */
 
 static int cs53l32a_write(struct v4l2_subdev *sd, u8 reg, u8 value)
@@ -74,31 +89,20 @@ static int cs53l32a_s_routing(struct v4l2_subdev *sd,
         return 0;
 }
 
-static int cs53l32a_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
+static int cs53l32a_s_ctrl(struct v4l2_ctrl *ctrl)
 {
-        if (ctrl->id == V4L2_CID_AUDIO_MUTE) {
-                ctrl->value = (cs53l32a_read(sd, 0x03) & 0xc0) != 0;
-                return 0;
-        }
-        if (ctrl->id != V4L2_CID_AUDIO_VOLUME)
-                return -EINVAL;
-        ctrl->value = (s8)cs53l32a_read(sd, 0x04);
-        return 0;
-}
+        struct v4l2_subdev *sd = to_sd(ctrl);
 
-static int cs53l32a_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
-{
-        if (ctrl->id == V4L2_CID_AUDIO_MUTE) {
-                cs53l32a_write(sd, 0x03, ctrl->value ? 0xf0 : 0x30);
+        switch (ctrl->id) {
+        case V4L2_CID_AUDIO_MUTE:
+                cs53l32a_write(sd, 0x03, ctrl->val ? 0xf0 : 0x30);
+                return 0;
+        case V4L2_CID_AUDIO_VOLUME:
+                cs53l32a_write(sd, 0x04, (u8)ctrl->val);
+                cs53l32a_write(sd, 0x05, (u8)ctrl->val);
                 return 0;
         }
-        if (ctrl->id != V4L2_CID_AUDIO_VOLUME)
-                return -EINVAL;
-        if (ctrl->value > 12 || ctrl->value < -96)
-                return -EINVAL;
-        cs53l32a_write(sd, 0x04, (u8) ctrl->value);
-        cs53l32a_write(sd, 0x05, (u8) ctrl->value);
-        return 0;
+        return -EINVAL;
 }
 
 static int cs53l32a_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
@@ -111,23 +115,30 @@ static int cs53l32a_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_id
 
 static int cs53l32a_log_status(struct v4l2_subdev *sd)
 {
+        struct cs53l32a_state *state = to_state(sd);
         u8 v = cs53l32a_read(sd, 0x01);
-        u8 m = cs53l32a_read(sd, 0x03);
-        s8 vol = cs53l32a_read(sd, 0x04);
 
-        v4l2_info(sd, "Input:  %d%s\n", (v >> 4) & 3,
-                        (m & 0xC0) ? " (muted)" : "");
-        v4l2_info(sd, "Volume: %d dB\n", vol);
+        v4l2_info(sd, "Input:  %d\n", (v >> 4) & 3);
+        v4l2_ctrl_handler_log_status(&state->hdl, sd->name);
         return 0;
 }
 
 /* ----------------------------------------------------------------------- */
 
+static const struct v4l2_ctrl_ops cs53l32a_ctrl_ops = {
+        .s_ctrl = cs53l32a_s_ctrl,
+};
+
 static const struct v4l2_subdev_core_ops cs53l32a_core_ops = {
         .log_status = cs53l32a_log_status,
         .g_chip_ident = cs53l32a_g_chip_ident,
-        .g_ctrl = cs53l32a_g_ctrl,
-        .s_ctrl = cs53l32a_s_ctrl,
+        .g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
+        .try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
+        .s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
+        .g_ctrl = v4l2_subdev_g_ctrl,
+        .s_ctrl = v4l2_subdev_s_ctrl,
+        .queryctrl = v4l2_subdev_queryctrl,
+        .querymenu = v4l2_subdev_querymenu,
 };
 
 static const struct v4l2_subdev_audio_ops cs53l32a_audio_ops = {
@@ -151,6 +162,7 @@ static const struct v4l2_subdev_ops cs53l32a_ops = {
 static int cs53l32a_probe(struct i2c_client *client,
                           const struct i2c_device_id *id)
 {
+        struct cs53l32a_state *state;
         struct v4l2_subdev *sd;
         int i;
 
@@ -164,9 +176,10 @@ static int cs53l32a_probe(struct i2c_client *client,
         v4l_info(client, "chip found @ 0x%x (%s)\n",
                         client->addr << 1, client->adapter->name);
 
-        sd = kmalloc(sizeof(struct v4l2_subdev), GFP_KERNEL);
-        if (sd == NULL)
+        state = kzalloc(sizeof(struct cs53l32a_state), GFP_KERNEL);
+        if (state == NULL)
                 return -ENOMEM;
+        sd = &state->sd;
         v4l2_i2c_subdev_init(sd, client, &cs53l32a_ops);
 
         for (i = 1; i <= 7; i++) {
@@ -175,15 +188,29 @@ static int cs53l32a_probe(struct i2c_client *client,
                 v4l2_dbg(1, debug, sd, "Read Reg %d %02x\n", i, v);
         }
 
+        v4l2_ctrl_handler_init(&state->hdl, 2);
+        v4l2_ctrl_new_std(&state->hdl, &cs53l32a_ctrl_ops,
+                        V4L2_CID_AUDIO_VOLUME, -96, 12, 1, 0);
+        v4l2_ctrl_new_std(&state->hdl, &cs53l32a_ctrl_ops,
+                        V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0);
+        sd->ctrl_handler = &state->hdl;
+        if (state->hdl.error) {
+                int err = state->hdl.error;
+
+                v4l2_ctrl_handler_free(&state->hdl);
+                kfree(state);
+                return err;
+        }
+
         /* Set cs53l32a internal register for Adaptec 2010/2410 setup */
 
-        cs53l32a_write(sd, 0x01, (u8) 0x21);
-        cs53l32a_write(sd, 0x02, (u8) 0x29);
-        cs53l32a_write(sd, 0x03, (u8) 0x30);
-        cs53l32a_write(sd, 0x04, (u8) 0x00);
-        cs53l32a_write(sd, 0x05, (u8) 0x00);
-        cs53l32a_write(sd, 0x06, (u8) 0x00);
-        cs53l32a_write(sd, 0x07, (u8) 0x00);
+        cs53l32a_write(sd, 0x01, 0x21);
+        cs53l32a_write(sd, 0x02, 0x29);
+        cs53l32a_write(sd, 0x03, 0x30);
+        cs53l32a_write(sd, 0x04, 0x00);
+        cs53l32a_write(sd, 0x05, 0x00);
+        cs53l32a_write(sd, 0x06, 0x00);
+        cs53l32a_write(sd, 0x07, 0x00);
 
         /* Display results, should be 0x21,0x29,0x30,0x00,0x00,0x00,0x00 */
 
@@ -198,9 +225,11 @@ static int cs53l32a_probe(struct i2c_client *client,
 static int cs53l32a_remove(struct i2c_client *client)
 {
         struct v4l2_subdev *sd = i2c_get_clientdata(client);
+        struct cs53l32a_state *state = to_state(sd);
 
         v4l2_device_unregister_subdev(sd);
-        kfree(sd);
+        v4l2_ctrl_handler_free(&state->hdl);
+        kfree(state);
         return 0;
 }