diff options
author | Nick Dyer <nick@shmanahar.org> | 2016-07-19 00:10:36 +0300 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2016-08-23 22:33:13 +0300 |
commit | 06b3d3f38c19601564cdd10443edbcac5c8293e2 (patch) | |
tree | 4bae0a5d4bee39891390f0af9cd6aac52b2cd015 /drivers/input/touchscreen | |
parent | 566d533a4bd2ed9a7ce26a08df31a6e634051562 (diff) | |
download | linux-06b3d3f38c19601564cdd10443edbcac5c8293e2.tar.xz |
[media] Input: atmel_mxt_ts - add support for reference data
There are different datatypes available from a maXTouch chip. Add
support to retrieve reference data as well.
Signed-off-by: Nick Dyer <nick@shmanahar.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/touchscreen')
-rw-r--r-- | drivers/input/touchscreen/atmel_mxt_ts.c | 57 |
1 files changed, 51 insertions, 6 deletions
diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c index 584198e64661..beede8fe511c 100644 --- a/drivers/input/touchscreen/atmel_mxt_ts.c +++ b/drivers/input/touchscreen/atmel_mxt_ts.c @@ -135,6 +135,7 @@ struct t9_range { /* MXT_DEBUG_DIAGNOSTIC_T37 */ #define MXT_DIAGNOSTIC_PAGEUP 0x01 #define MXT_DIAGNOSTIC_DELTAS 0x10 +#define MXT_DIAGNOSTIC_REFS 0x11 #define MXT_DIAGNOSTIC_SIZE 128 #define MXT_FAMILY_1386 160 @@ -249,6 +250,12 @@ struct mxt_dbg { int input; }; +enum v4l_dbg_inputs { + MXT_V4L_INPUT_DELTAS, + MXT_V4L_INPUT_REFS, + MXT_V4L_INPUT_MAX, +}; + static const struct v4l2_file_operations mxt_video_fops = { .owner = THIS_MODULE, .open = v4l2_fh_open, @@ -2273,6 +2280,7 @@ static void mxt_buffer_queue(struct vb2_buffer *vb) struct mxt_data *data = vb2_get_drv_priv(vb->vb2_queue); u16 *ptr; int ret; + u8 mode; ptr = vb2_plane_vaddr(vb, 0); if (!ptr) { @@ -2280,7 +2288,18 @@ static void mxt_buffer_queue(struct vb2_buffer *vb) goto fault; } - ret = mxt_read_diagnostic_debug(data, MXT_DIAGNOSTIC_DELTAS, ptr); + switch (data->dbg.input) { + case MXT_V4L_INPUT_DELTAS: + default: + mode = MXT_DIAGNOSTIC_DELTAS; + break; + + case MXT_V4L_INPUT_REFS: + mode = MXT_DIAGNOSTIC_REFS; + break; + } + + ret = mxt_read_diagnostic_debug(data, mode, ptr); if (ret) goto fault; @@ -2325,11 +2344,21 @@ static int mxt_vidioc_querycap(struct file *file, void *priv, static int mxt_vidioc_enum_input(struct file *file, void *priv, struct v4l2_input *i) { - if (i->index > 0) + if (i->index >= MXT_V4L_INPUT_MAX) return -EINVAL; i->type = V4L2_INPUT_TYPE_TOUCH; - strlcpy(i->name, "Mutual Capacitance Deltas", sizeof(i->name)); + + switch (i->index) { + case MXT_V4L_INPUT_REFS: + strlcpy(i->name, "Mutual Capacitance References", + sizeof(i->name)); + break; + case MXT_V4L_INPUT_DELTAS: + strlcpy(i->name, "Mutual Capacitance Deltas", sizeof(i->name)); + break; + } + return 0; } @@ -2337,12 +2366,16 @@ static int mxt_set_input(struct mxt_data *data, unsigned int i) { struct v4l2_pix_format *f = &data->dbg.format; - if (i > 0) + if (i >= MXT_V4L_INPUT_MAX) return -EINVAL; + if (i == MXT_V4L_INPUT_DELTAS) + f->pixelformat = V4L2_TCH_FMT_DELTA_TD16; + else + f->pixelformat = V4L2_TCH_FMT_TU16; + f->width = data->xy_switch ? data->ysize : data->xsize; f->height = data->xy_switch ? data->xsize : data->ysize; - f->pixelformat = V4L2_TCH_FMT_DELTA_TD16; f->field = V4L2_FIELD_NONE; f->colorspace = V4L2_COLORSPACE_RAW; f->bytesperline = f->width * sizeof(u16); @@ -2383,7 +2416,19 @@ static int mxt_vidioc_enum_fmt(struct file *file, void *priv, if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) return -EINVAL; - fmt->pixelformat = V4L2_TCH_FMT_DELTA_TD16; + switch (fmt->index) { + case 0: + fmt->pixelformat = V4L2_TCH_FMT_TU16; + break; + + case 1: + fmt->pixelformat = V4L2_TCH_FMT_DELTA_TD16; + break; + + default: + return -EINVAL; + } + return 0; } |