From 9bf0c43eee72f677aecd892d0b97a3070e27cd51 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Wed, 16 May 2012 07:29:00 -0300 Subject: [PATCH] [media] spca500: convert to the control framework Signed-off-by: Hans Verkuil Signed-off-by: Hans de Goede Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/gspca/spca500.c | 206 +++++++++------------------- 1 file changed, 67 insertions(+), 139 deletions(-) diff --git a/drivers/media/video/gspca/spca500.c b/drivers/media/video/gspca/spca500.c index 103984708c77..621b8095b0eb 100644 --- a/drivers/media/video/gspca/spca500.c +++ b/drivers/media/video/gspca/spca500.c @@ -34,10 +34,7 @@ MODULE_LICENSE("GPL"); struct sd { struct gspca_dev gspca_dev; /* !! must be the first item */ - unsigned char brightness; - unsigned char contrast; - unsigned char colors; - u8 quality; + struct v4l2_ctrl *jpegqual; #define QUALITY_MIN 70 #define QUALITY_MAX 95 #define QUALITY_DEF 85 @@ -62,59 +59,6 @@ struct sd { u8 jpeg_hdr[JPEG_HDR_SZ]; }; -/* V4L2 controls supported by the driver */ -static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val); -static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val); -static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val); -static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val); -static int sd_setcolors(struct gspca_dev *gspca_dev, __s32 val); -static int sd_getcolors(struct gspca_dev *gspca_dev, __s32 *val); - -static const struct ctrl sd_ctrls[] = { - { - { - .id = V4L2_CID_BRIGHTNESS, - .type = V4L2_CTRL_TYPE_INTEGER, - .name = "Brightness", - .minimum = 0, - .maximum = 255, - .step = 1, -#define BRIGHTNESS_DEF 127 - .default_value = BRIGHTNESS_DEF, - }, - .set = sd_setbrightness, - .get = sd_getbrightness, - }, - { - { - .id = V4L2_CID_CONTRAST, - .type = V4L2_CTRL_TYPE_INTEGER, - .name = "Contrast", - .minimum = 0, - .maximum = 63, - .step = 1, -#define CONTRAST_DEF 31 - .default_value = CONTRAST_DEF, - }, - .set = sd_setcontrast, - .get = sd_getcontrast, - }, - { - { - .id = V4L2_CID_SATURATION, - .type = V4L2_CTRL_TYPE_INTEGER, - .name = "Color", - .minimum = 0, - .maximum = 63, - .step = 1, -#define COLOR_DEF 31 - .default_value = COLOR_DEF, - }, - .set = sd_setcolors, - .get = sd_getcolors, - }, -}; - static const struct v4l2_pix_format vga_mode[] = { {320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, .bytesperline = 320, @@ -641,10 +585,6 @@ static int sd_config(struct gspca_dev *gspca_dev, cam->cam_mode = sif_mode; cam->nmodes = ARRAY_SIZE(sif_mode); } - sd->brightness = BRIGHTNESS_DEF; - sd->contrast = CONTRAST_DEF; - sd->colors = COLOR_DEF; - sd->quality = QUALITY_DEF; return 0; } @@ -673,7 +613,7 @@ static int sd_start(struct gspca_dev *gspca_dev) /* create the JPEG header */ jpeg_define(sd->jpeg_hdr, gspca_dev->height, gspca_dev->width, 0x22); /* JPEG 411 */ - jpeg_set_qual(sd->jpeg_hdr, sd->quality); + jpeg_set_qual(sd->jpeg_hdr, v4l2_ctrl_g_ctrl(sd->jpegqual)); if (sd->subtype == LogitechClickSmart310) { xmult = 0x16; @@ -934,80 +874,20 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev, gspca_frame_add(gspca_dev, INTER_PACKET, data, len); } -static void setbrightness(struct gspca_dev *gspca_dev) +static void setbrightness(struct gspca_dev *gspca_dev, s32 val) { - struct sd *sd = (struct sd *) gspca_dev; - reg_w(gspca_dev, 0x00, 0x8167, - (__u8) (sd->brightness - 128)); + (__u8) (val - 128)); } -static void setcontrast(struct gspca_dev *gspca_dev) +static void setcontrast(struct gspca_dev *gspca_dev, s32 val) { - struct sd *sd = (struct sd *) gspca_dev; - - reg_w(gspca_dev, 0x00, 0x8168, sd->contrast); + reg_w(gspca_dev, 0x00, 0x8168, val); } -static void setcolors(struct gspca_dev *gspca_dev) +static void setcolors(struct gspca_dev *gspca_dev, s32 val) { - struct sd *sd = (struct sd *) gspca_dev; - - reg_w(gspca_dev, 0x00, 0x8169, sd->colors); -} - -static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val) -{ - struct sd *sd = (struct sd *) gspca_dev; - - sd->brightness = val; - if (gspca_dev->streaming) - setbrightness(gspca_dev); - return 0; -} - -static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val) -{ - struct sd *sd = (struct sd *) gspca_dev; - - *val = sd->brightness; - return 0; -} - -static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val) -{ - struct sd *sd = (struct sd *) gspca_dev; - - sd->contrast = val; - if (gspca_dev->streaming) - setcontrast(gspca_dev); - return 0; -} - -static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val) -{ - struct sd *sd = (struct sd *) gspca_dev; - - *val = sd->contrast; - return 0; -} - -static int sd_setcolors(struct gspca_dev *gspca_dev, __s32 val) -{ - struct sd *sd = (struct sd *) gspca_dev; - - sd->colors = val; - if (gspca_dev->streaming) - setcolors(gspca_dev); - return 0; -} - -static int sd_getcolors(struct gspca_dev *gspca_dev, __s32 *val) -{ - struct sd *sd = (struct sd *) gspca_dev; - - *val = sd->colors; - return 0; + reg_w(gspca_dev, 0x00, 0x8169, val); } static int sd_set_jcomp(struct gspca_dev *gspca_dev, @@ -1015,14 +895,7 @@ static int sd_set_jcomp(struct gspca_dev *gspca_dev, { struct sd *sd = (struct sd *) gspca_dev; - if (jcomp->quality < QUALITY_MIN) - sd->quality = QUALITY_MIN; - else if (jcomp->quality > QUALITY_MAX) - sd->quality = QUALITY_MAX; - else - sd->quality = jcomp->quality; - if (gspca_dev->streaming) - jpeg_set_qual(sd->jpeg_hdr, sd->quality); + v4l2_ctrl_s_ctrl(sd->jpegqual, jcomp->quality); return 0; } @@ -1032,19 +905,74 @@ static int sd_get_jcomp(struct gspca_dev *gspca_dev, struct sd *sd = (struct sd *) gspca_dev; memset(jcomp, 0, sizeof *jcomp); - jcomp->quality = sd->quality; + jcomp->quality = v4l2_ctrl_g_ctrl(sd->jpegqual); jcomp->jpeg_markers = V4L2_JPEG_MARKER_DHT | V4L2_JPEG_MARKER_DQT; return 0; } +static int sd_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct gspca_dev *gspca_dev = + container_of(ctrl->handler, struct gspca_dev, ctrl_handler); + struct sd *sd = (struct sd *)gspca_dev; + + gspca_dev->usb_err = 0; + + if (!gspca_dev->streaming) + return 0; + + switch (ctrl->id) { + case V4L2_CID_BRIGHTNESS: + setbrightness(gspca_dev, ctrl->val); + break; + case V4L2_CID_CONTRAST: + setcontrast(gspca_dev, ctrl->val); + break; + case V4L2_CID_SATURATION: + setcolors(gspca_dev, ctrl->val); + break; + case V4L2_CID_JPEG_COMPRESSION_QUALITY: + jpeg_set_qual(sd->jpeg_hdr, ctrl->val); + break; + } + return gspca_dev->usb_err; +} + +static const struct v4l2_ctrl_ops sd_ctrl_ops = { + .s_ctrl = sd_s_ctrl, +}; + +static int sd_init_controls(struct gspca_dev *gspca_dev) +{ + struct sd *sd = (struct sd *)gspca_dev; + struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler; + + gspca_dev->vdev.ctrl_handler = hdl; + v4l2_ctrl_handler_init(hdl, 4); + v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, + V4L2_CID_BRIGHTNESS, 0, 255, 1, 127); + v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, + V4L2_CID_CONTRAST, 0, 63, 1, 31); + v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, + V4L2_CID_SATURATION, 0, 63, 1, 31); + sd->jpegqual = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, + V4L2_CID_JPEG_COMPRESSION_QUALITY, + QUALITY_MIN, QUALITY_MAX, 1, QUALITY_DEF); + + if (hdl->error) { + pr_err("Could not initialize controls\n"); + return hdl->error; + } + return 0; +} + /* sub-driver description */ static const struct sd_desc sd_desc = { .name = MODULE_NAME, - .ctrls = sd_ctrls, - .nctrls = ARRAY_SIZE(sd_ctrls), .config = sd_config, .init = sd_init, + .init_controls = sd_init_controls, .start = sd_start, .stopN = sd_stopN, .pkt_scan = sd_pkt_scan,