diff options
| author | Michał Winiarski <michal.winiarski@intel.com> | 2018-05-25 10:28:17 -0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2018-05-28 17:39:49 -0400 |
| commit | d24e56f6fbfbce79ae1da3ef7a790942e48676ef (patch) | |
| tree | e515f1594cc8ae6f6bf31ffb2c79043590d9c79a /drivers/media/rc | |
| parent | adbe6cfe5966dbc08d591d0e3771a270ef6e459d (diff) | |
| download | lwn-d24e56f6fbfbce79ae1da3ef7a790942e48676ef.tar.gz lwn-d24e56f6fbfbce79ae1da3ef7a790942e48676ef.zip | |
media: rc: nuvoton: Keep device enabled during reg init
Doing writes when the device is disabled seems to be a NOOP.
For CIR device, we should enable it, initialize it, and then disable it
until it's opened. CIR_WAKE should always be enabled.
Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
Cc: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers/media/rc')
| -rw-r--r-- | drivers/media/rc/nuvoton-cir.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/media/rc/nuvoton-cir.c b/drivers/media/rc/nuvoton-cir.c index eebd6fef5602..b8299c9a9744 100644 --- a/drivers/media/rc/nuvoton-cir.c +++ b/drivers/media/rc/nuvoton-cir.c @@ -535,6 +535,8 @@ static void nvt_set_cir_iren(struct nvt_dev *nvt) static void nvt_cir_regs_init(struct nvt_dev *nvt) { + nvt_enable_logical_dev(nvt, LOGICAL_DEV_CIR); + /* set sample limit count (PE interrupt raised when reached) */ nvt_cir_reg_write(nvt, CIR_RX_LIMIT_COUNT >> 8, CIR_SLCH); nvt_cir_reg_write(nvt, CIR_RX_LIMIT_COUNT & 0xff, CIR_SLCL); @@ -546,10 +548,14 @@ static void nvt_cir_regs_init(struct nvt_dev *nvt) /* clear hardware rx and tx fifos */ nvt_clear_cir_fifo(nvt); nvt_clear_tx_fifo(nvt); + + nvt_disable_logical_dev(nvt, LOGICAL_DEV_CIR); } static void nvt_cir_wake_regs_init(struct nvt_dev *nvt) { + nvt_enable_logical_dev(nvt, LOGICAL_DEV_CIR_WAKE); + /* * Disable RX, set specific carrier on = low, off = high, * and sample period (currently 50us) @@ -561,9 +567,6 @@ static void nvt_cir_wake_regs_init(struct nvt_dev *nvt) /* clear any and all stray interrupts */ nvt_cir_wake_reg_write(nvt, 0xff, CIR_WAKE_IRSTS); - - /* enable the CIR WAKE logical device */ - nvt_enable_logical_dev(nvt, LOGICAL_DEV_CIR_WAKE); } static void nvt_enable_wake(struct nvt_dev *nvt) |