V4L/DVB: saa7115: convert to the new control framework

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

1 files changed, 83 insertions, 100 deletions

diff --git a/drivers/media/video/saa7115.c b/drivers/media/video/saa7115.c
index 76da74368680..ee963f4d01bc 100644
--- a/drivers/media/video/saa7115.c
+++ b/drivers/media/video/saa7115.c
@@ -45,6 +45,7 @@
 #include <linux/i2c.h>
 #include <linux/videodev2.h>
 #include <media/v4l2-device.h>
+#include <media/v4l2-ctrls.h>
 #include <media/v4l2-chip-ident.h>
 #include <media/v4l2-i2c-drv.h>
 #include <media/saa7115.h>
@@ -65,16 +66,19 @@ MODULE_PARM_DESC(debug, "Debug level (0-1)");
 
 struct saa711x_state {
         struct v4l2_subdev sd;
+        struct v4l2_ctrl_handler hdl;
+
+        struct {
+                /* chroma gain control cluster */
+                struct v4l2_ctrl *agc;
+                struct v4l2_ctrl *gain;
+        };
+
         v4l2_std_id std;
         int input;
         int output;
         int enable;
         int radio;
-        int bright;
-        int contrast;
-        int hue;
-        int sat;
-        int chroma_agc;
         int width;
         int height;
         u32 ident;
@@ -90,6 +94,11 @@ static inline struct saa711x_state *to_state(struct v4l2_subdev *sd)
         return container_of(sd, struct saa711x_state, sd);
 }
 
+static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
+{
+        return &container_of(ctrl->handler, struct saa711x_state, hdl)->sd;
+}
+
 /* ----------------------------------------------------------------------- */
 
 static inline int saa711x_write(struct v4l2_subdev *sd, u8 reg, u8 value)
@@ -741,96 +750,53 @@ static int saa711x_s_clock_freq(struct v4l2_subdev *sd, u32 freq)
         return 0;
 }
 
-static int saa711x_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
+static int saa711x_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
 {
+        struct v4l2_subdev *sd = to_sd(ctrl);
         struct saa711x_state *state = to_state(sd);
-        u8 val;
 
         switch (ctrl->id) {
-        case V4L2_CID_BRIGHTNESS:
-                if (ctrl->value < 0 || ctrl->value > 255) {
-                        v4l2_err(sd, "invalid brightness setting %d\n", ctrl->value);
-                        return -ERANGE;
-                }
-
-                state->bright = ctrl->value;
-                saa711x_write(sd, R_0A_LUMA_BRIGHT_CNTL, state->bright);
-                break;
-
-        case V4L2_CID_CONTRAST:
-                if (ctrl->value < 0 || ctrl->value > 127) {
-                        v4l2_err(sd, "invalid contrast setting %d\n", ctrl->value);
-                        return -ERANGE;
-                }
-
-                state->contrast = ctrl->value;
-                saa711x_write(sd, R_0B_LUMA_CONTRAST_CNTL, state->contrast);
-                break;
-
-        case V4L2_CID_SATURATION:
-                if (ctrl->value < 0 || ctrl->value > 127) {
-                        v4l2_err(sd, "invalid saturation setting %d\n", ctrl->value);
-                        return -ERANGE;
-                }
-
-                state->sat = ctrl->value;
-                saa711x_write(sd, R_0C_CHROMA_SAT_CNTL, state->sat);
-                break;
-
-        case V4L2_CID_HUE:
-                if (ctrl->value < -128 || ctrl->value > 127) {
-                        v4l2_err(sd, "invalid hue setting %d\n", ctrl->value);
-                        return -ERANGE;
-                }
-
-                state->hue = ctrl->value;
-                saa711x_write(sd, R_0D_CHROMA_HUE_CNTL, state->hue);
-                break;
         case V4L2_CID_CHROMA_AGC:
-                val = saa711x_read(sd, R_0F_CHROMA_GAIN_CNTL);
-                state->chroma_agc = ctrl->value;
-                if (ctrl->value)
-                        val &= 0x7f;
-                else
-                        val |= 0x80;
-                saa711x_write(sd, R_0F_CHROMA_GAIN_CNTL, val);
+                /* chroma gain cluster */
+                if (state->agc->cur.val)
+                        state->gain->cur.val =
+                                saa711x_read(sd, R_0F_CHROMA_GAIN_CNTL) & 0x7f;
                 break;
-        case V4L2_CID_CHROMA_GAIN:
-                /* Chroma gain cannot be set when AGC is enabled */
-                if (state->chroma_agc == 1)
-                        return -EINVAL;
-                saa711x_write(sd, R_0F_CHROMA_GAIN_CNTL, ctrl->value | 0x80);
-                break;
-        default:
-                return -EINVAL;
         }
-
         return 0;
 }
 
-static int saa711x_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
+static int saa711x_s_ctrl(struct v4l2_ctrl *ctrl)
 {
+        struct v4l2_subdev *sd = to_sd(ctrl);
         struct saa711x_state *state = to_state(sd);
 
         switch (ctrl->id) {
         case V4L2_CID_BRIGHTNESS:
-                ctrl->value = state->bright;
+                saa711x_write(sd, R_0A_LUMA_BRIGHT_CNTL, ctrl->val);
                 break;
+
         case V4L2_CID_CONTRAST:
-                ctrl->value = state->contrast;
+                saa711x_write(sd, R_0B_LUMA_CONTRAST_CNTL, ctrl->val);
                 break;
+
         case V4L2_CID_SATURATION:
-                ctrl->value = state->sat;
+                saa711x_write(sd, R_0C_CHROMA_SAT_CNTL, ctrl->val);
                 break;
+
         case V4L2_CID_HUE:
-                ctrl->value = state->hue;
+                saa711x_write(sd, R_0D_CHROMA_HUE_CNTL, ctrl->val);
                 break;
+
         case V4L2_CID_CHROMA_AGC:
-                ctrl->value = state->chroma_agc;
-                break;
-        case V4L2_CID_CHROMA_GAIN:
-                ctrl->value = saa711x_read(sd, R_0F_CHROMA_GAIN_CNTL) & 0x7f;
+                /* chroma gain cluster */
+                if (state->agc->val)
+                        saa711x_write(sd, R_0F_CHROMA_GAIN_CNTL, state->gain->val);
+                else
+                        saa711x_write(sd, R_0F_CHROMA_GAIN_CNTL, state->gain->val | 0x80);
+                v4l2_ctrl_activate(state->gain, !state->agc->val);
                 break;
+
         default:
                 return -EINVAL;
         }
@@ -1223,25 +1189,6 @@ static int saa711x_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
         return 0;
 }
 
-static int saa711x_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
-{
-        switch (qc->id) {
-        case V4L2_CID_BRIGHTNESS:
-                return v4l2_ctrl_query_fill(qc, 0, 255, 1, 128);
-        case V4L2_CID_CONTRAST:
-        case V4L2_CID_SATURATION:
-                return v4l2_ctrl_query_fill(qc, 0, 127, 1, 64);
-        case V4L2_CID_HUE:
-                return v4l2_ctrl_query_fill(qc, -128, 127, 1, 0);
-        case V4L2_CID_CHROMA_AGC:
-                return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
-        case V4L2_CID_CHROMA_GAIN:
-                return v4l2_ctrl_query_fill(qc, 0, 127, 1, 48);
-        default:
-                return -EINVAL;
-        }
-}
-
 static int saa711x_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
 {
         struct saa711x_state *state = to_state(sd);
@@ -1518,17 +1465,27 @@ static int saa711x_log_status(struct v4l2_subdev *sd)
                 break;
         }
         v4l2_info(sd, "Width, Height:   %d, %d\n", state->width, state->height);
+        v4l2_ctrl_handler_log_status(&state->hdl, sd->name);
         return 0;
 }
 
 /* ----------------------------------------------------------------------- */
 
+static const struct v4l2_ctrl_ops saa711x_ctrl_ops = {
+        .s_ctrl = saa711x_s_ctrl,
+        .g_volatile_ctrl = saa711x_g_volatile_ctrl,
+};
+
 static const struct v4l2_subdev_core_ops saa711x_core_ops = {
         .log_status = saa711x_log_status,
         .g_chip_ident = saa711x_g_chip_ident,
-        .g_ctrl = saa711x_g_ctrl,
-        .s_ctrl = saa711x_s_ctrl,
-        .queryctrl = saa711x_queryctrl,
+        .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,
         .s_std = saa711x_s_std,
         .reset = saa711x_reset,
         .s_gpio = saa711x_s_gpio,
@@ -1579,8 +1536,9 @@ static int saa711x_probe(struct i2c_client *client,
 {
         struct saa711x_state *state;
         struct v4l2_subdev *sd;
-        int     i;
-        char    name[17];
+        struct v4l2_ctrl_handler *hdl;
+        int i;
+        char name[17];
         char chip_id;
         int autodetect = !id || id->driver_data == 1;
 
@@ -1619,15 +1577,38 @@ static int saa711x_probe(struct i2c_client *client,
                 return -ENOMEM;
         sd = &state->sd;
         v4l2_i2c_subdev_init(sd, client, &saa711x_ops);
+
+        hdl = &state->hdl;
+        v4l2_ctrl_handler_init(hdl, 6);
+        /* add in ascending ID order */
+        v4l2_ctrl_new_std(hdl, &saa711x_ctrl_ops,
+                        V4L2_CID_BRIGHTNESS, 0, 255, 1, 128);
+        v4l2_ctrl_new_std(hdl, &saa711x_ctrl_ops,
+                        V4L2_CID_CONTRAST, 0, 127, 1, 64);
+        v4l2_ctrl_new_std(hdl, &saa711x_ctrl_ops,
+                        V4L2_CID_SATURATION, 0, 127, 1, 64);
+        v4l2_ctrl_new_std(hdl, &saa711x_ctrl_ops,
+                        V4L2_CID_HUE, -128, 127, 1, 0);
+        state->agc = v4l2_ctrl_new_std(hdl, &saa711x_ctrl_ops,
+                        V4L2_CID_CHROMA_AGC, 0, 1, 1, 1);
+        state->gain = v4l2_ctrl_new_std(hdl, &saa711x_ctrl_ops,
+                        V4L2_CID_CHROMA_GAIN, 0, 127, 1, 40);
+        state->gain->is_volatile = 1;
+        sd->ctrl_handler = hdl;
+        if (hdl->error) {
+                int err = hdl->error;
+
+                v4l2_ctrl_handler_free(hdl);
+                kfree(state);
+                return err;
+        }
+        state->agc->flags |= V4L2_CTRL_FLAG_UPDATE;
+        v4l2_ctrl_cluster(2, &state->agc);
+
         state->input = -1;
         state->output = SAA7115_IPORT_ON;
         state->enable = 1;
         state->radio = 0;
-        state->bright = 128;
-        state->contrast = 64;
-        state->hue = 0;
-        state->sat = 64;
-        state->chroma_agc = 1;
         switch (chip_id) {
         case '1':
                 state->ident = V4L2_IDENT_SAA7111;
@@ -1675,6 +1656,7 @@ static int saa711x_probe(struct i2c_client *client,
         if (state->ident > V4L2_IDENT_SAA7111A)
                 saa711x_writeregs(sd, saa7115_init_misc);
         saa711x_set_v4lstd(sd, V4L2_STD_NTSC);
+        v4l2_ctrl_handler_setup(hdl);
 
         v4l2_dbg(1, debug, sd, "status: (1E) 0x%02x, (1F) 0x%02x\n",
                 saa711x_read(sd, R_1E_STATUS_BYTE_1_VD_DEC),
@@ -1689,6 +1671,7 @@ static int saa711x_remove(struct i2c_client *client)
         struct v4l2_subdev *sd = i2c_get_clientdata(client);
 
         v4l2_device_unregister_subdev(sd);
+        v4l2_ctrl_handler_free(sd->ctrl_handler);
         kfree(to_state(sd));
         return 0;
 }