diff options
| author | Hugues Fruchet <hugues.fruchet@st.com> | 2017-08-22 10:41:09 -0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-08-26 14:08:39 -0400 |
| commit | 7b7805e58c0095017e3dce939f1af080fc90db79 (patch) | |
| tree | 354b9eeea2fb57a579fd818308bf104b2c1f7d53 /drivers/media/platform/stm32/stm32-dcmi.c | |
| parent | 134e15e6815921cb6db4fa6a0453df3441989fad (diff) | |
media: stm32-dcmi: revisit control register handling
Simplify bits handling of DCMI_CR register.
Signed-off-by: Hugues Fruchet <hugues.fruchet@st.com>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers/media/platform/stm32/stm32-dcmi.c')
| -rw-r--r-- | drivers/media/platform/stm32/stm32-dcmi.c | 14 |
1 files changed, 4 insertions, 10 deletions
diff --git a/drivers/media/platform/stm32/stm32-dcmi.c b/drivers/media/platform/stm32/stm32-dcmi.c index 7ffb2d3e99be..1fe2d0f0f5de 100644 --- a/drivers/media/platform/stm32/stm32-dcmi.c +++ b/drivers/media/platform/stm32/stm32-dcmi.c @@ -490,7 +490,7 @@ static int dcmi_start_streaming(struct vb2_queue *vq, unsigned int count) { struct stm32_dcmi *dcmi = vb2_get_drv_priv(vq); struct dcmi_buf *buf, *node; - u32 val; + u32 val = 0; int ret; ret = clk_enable(dcmi->mclk); @@ -510,22 +510,16 @@ static int dcmi_start_streaming(struct vb2_queue *vq, unsigned int count) spin_lock_irq(&dcmi->irqlock); - val = reg_read(dcmi->regs, DCMI_CR); - - val &= ~(CR_PCKPOL | CR_HSPOL | CR_VSPOL | - CR_EDM_0 | CR_EDM_1 | CR_FCRC_0 | - CR_FCRC_1 | CR_JPEG | CR_ESS); - /* Set bus width */ switch (dcmi->bus.bus_width) { case 14: - val &= CR_EDM_0 + CR_EDM_1; + val |= CR_EDM_0 | CR_EDM_1; break; case 12: - val &= CR_EDM_1; + val |= CR_EDM_1; break; case 10: - val &= CR_EDM_0; + val |= CR_EDM_0; break; default: /* Set bus width to 8 bits by default */ |