From e5927243e49f0f010cb22b3c625202881df18877 Mon Sep 17 00:00:00 2001 From: Dave Stevenson Date: Wed, 31 Oct 2018 15:00:04 +0000 Subject: [PATCH 0395/1085] media: adv7180: Nasty hack to allow input selection. Whilst the adv7180 driver support s_routing, nothing else does, and there is a missing lump of framework code to define the mapping from connectors on a board to the inputs they represent on the ADV7180. Add a nasty hack to take a module parameter that is passed in to s_routing on any call to G_STD, or S_STD (or subdev g_input_status call). Signed-off-by: Dave Stevenson --- drivers/media/i2c/adv7180.c | 30 ++++++++++++++++++++++++++++-- 1 file changed, 28 insertions(+), 2 deletions(-) --- a/drivers/media/i2c/adv7180.c +++ b/drivers/media/i2c/adv7180.c @@ -188,6 +188,10 @@ /* Initial number of frames to skip to avoid possible garbage */ #define ADV7180_NUM_OF_SKIP_FRAMES 2 +static int dbg_input; +module_param(dbg_input, int, 0644); +MODULE_PARM_DESC(dbg_input, "Input number (0-31)"); + struct adv7180_state; #define ADV7180_FLAG_RESET_POWERED BIT(0) @@ -406,10 +410,24 @@ out: return ret; } +static void adv7180_check_input(struct v4l2_subdev *sd) +{ + struct adv7180_state *state = to_state(sd); + + if (state->input != dbg_input) + if (adv7180_s_routing(sd, dbg_input, 0, 0)) + /* Failed - reset dbg_input */ + dbg_input = state->input; +} + static int adv7180_g_input_status(struct v4l2_subdev *sd, u32 *status) { struct adv7180_state *state = to_state(sd); - int ret = mutex_lock_interruptible(&state->mutex); + int ret; + + adv7180_check_input(sd); + + ret = mutex_lock_interruptible(&state->mutex); if (ret) return ret; @@ -435,7 +453,11 @@ static int adv7180_program_std(struct ad static int adv7180_s_std(struct v4l2_subdev *sd, v4l2_std_id std) { struct adv7180_state *state = to_state(sd); - int ret = mutex_lock_interruptible(&state->mutex); + int ret; + + adv7180_check_input(sd); + + ret = mutex_lock_interruptible(&state->mutex); if (ret) return ret; @@ -457,6 +479,8 @@ static int adv7180_g_std(struct v4l2_sub { struct adv7180_state *state = to_state(sd); + adv7180_check_input(sd); + *norm = state->curr_norm; return 0; @@ -886,6 +910,8 @@ static int adv7180_s_stream(struct v4l2_ return 0; } + adv7180_check_input(sd); + /* Must wait until querystd released the lock */ ret = mutex_lock_interruptible(&state->mutex); if (ret)