diff options
| -rw-r--r-- | drivers/staging/media/atomisp/platform/intel-mid/atomisp_gmin_platform.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/staging/media/atomisp/platform/intel-mid/atomisp_gmin_platform.c b/drivers/staging/media/atomisp/platform/intel-mid/atomisp_gmin_platform.c index 17b4cfae5abf..8a20a28d37f1 100644 --- a/drivers/staging/media/atomisp/platform/intel-mid/atomisp_gmin_platform.c +++ b/drivers/staging/media/atomisp/platform/intel-mid/atomisp_gmin_platform.c @@ -29,6 +29,7 @@ struct gmin_subdev { struct v4l2_subdev *subdev; int clock_num; int clock_src; + bool clock_on; struct clk *pmc_clk; struct gpio_desc *gpio0; struct gpio_desc *gpio1; @@ -572,6 +573,9 @@ static int gmin_flisclk_ctrl(struct v4l2_subdev *subdev, int on) struct gmin_subdev *gs = find_gmin_subdev(subdev); struct i2c_client *client = v4l2_get_subdevdata(subdev); + if (gs->clock_on == !!on) + return 0; + if (on) { ret = clk_set_rate(gs->pmc_clk, gs->clock_src); @@ -580,8 +584,11 @@ static int gmin_flisclk_ctrl(struct v4l2_subdev *subdev, int on) gs->clock_src); ret = clk_prepare_enable(gs->pmc_clk); + if (ret == 0) + gs->clock_on = true; } else { clk_disable_unprepare(gs->pmc_clk); + gs->clock_on = false; } return ret; |