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| author | Steve Longerbeam <slongerbeam@gmail.com> | 2014-06-26 03:05:30 +0200 |
|---|---|---|
| committer | Philipp Zabel <p.zabel@pengutronix.de> | 2014-08-18 14:17:47 +0200 |
| commit | ba07975f0fe5bf95107d71d0df0405c16f5c3266 (patch) | |
| tree | 8346726e7bce8ffb879d66d258e24b3896018c11 | |
| parent | staging: imx-drm: Convert to new ipu_cpmem API (diff) | |
| download | linux-ba07975f0fe5bf95107d71d0df0405c16f5c3266.tar.xz linux-ba07975f0fe5bf95107d71d0df0405c16f5c3266.zip | |
gpu: ipu-v3: Add functions to set CSI/IC source muxes
Adds two new functions, ipu_set_csi_src_mux() and ipu_set_ic_src_mux(),
that select the inputs to the CSI and IC respectively. Both muxes are
programmed in the IPU_CONF register.
Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
| -rw-r--r-- | drivers/gpu/ipu-v3/ipu-common.c | 51 | ||||
| -rw-r--r-- | include/video/imx-ipu-v3.h | 6 |
2 files changed, 57 insertions, 0 deletions
diff --git a/drivers/gpu/ipu-v3/ipu-common.c b/drivers/gpu/ipu-v3/ipu-common.c index 5978e7aab8ed..cae543115856 100644 --- a/drivers/gpu/ipu-v3/ipu-common.c +++ b/drivers/gpu/ipu-v3/ipu-common.c @@ -382,6 +382,57 @@ static int ipu_memory_reset(struct ipu_soc *ipu) return 0; } +/* + * Set the source mux for the given CSI. Selects either parallel or + * MIPI CSI2 sources. + */ +void ipu_set_csi_src_mux(struct ipu_soc *ipu, int csi_id, bool mipi_csi2) +{ + unsigned long flags; + u32 val, mask; + + mask = (csi_id == 1) ? IPU_CONF_CSI1_DATA_SOURCE : + IPU_CONF_CSI0_DATA_SOURCE; + + spin_lock_irqsave(&ipu->lock, flags); + + val = ipu_cm_read(ipu, IPU_CONF); + if (mipi_csi2) + val |= mask; + else + val &= ~mask; + ipu_cm_write(ipu, val, IPU_CONF); + + spin_unlock_irqrestore(&ipu->lock, flags); +} +EXPORT_SYMBOL_GPL(ipu_set_csi_src_mux); + +/* + * Set the source mux for the IC. Selects either CSI[01] or the VDI. + */ +void ipu_set_ic_src_mux(struct ipu_soc *ipu, int csi_id, bool vdi) +{ + unsigned long flags; + u32 val; + + spin_lock_irqsave(&ipu->lock, flags); + + val = ipu_cm_read(ipu, IPU_CONF); + if (vdi) { + val |= IPU_CONF_IC_INPUT; + } else { + val &= ~IPU_CONF_IC_INPUT; + if (csi_id == 1) + val |= IPU_CONF_CSI_SEL; + else + val &= ~IPU_CONF_CSI_SEL; + } + ipu_cm_write(ipu, val, IPU_CONF); + + spin_unlock_irqrestore(&ipu->lock, flags); +} +EXPORT_SYMBOL_GPL(ipu_set_ic_src_mux); + struct ipu_devtype { const char *name; unsigned long cm_ofs; diff --git a/include/video/imx-ipu-v3.h b/include/video/imx-ipu-v3.h index ef64b66b18df..f80fe13b0d4d 100644 --- a/include/video/imx-ipu-v3.h +++ b/include/video/imx-ipu-v3.h @@ -93,6 +93,12 @@ int ipu_idmac_channel_irq(struct ipu_soc *ipu, struct ipuv3_channel *channel, #define IPU_IRQ_VSYNC_PRE_1 (448 + 15) /* + * IPU Common functions + */ +void ipu_set_csi_src_mux(struct ipu_soc *ipu, int csi_id, bool mipi_csi2); +void ipu_set_ic_src_mux(struct ipu_soc *ipu, int csi_id, bool vdi); + +/* * IPU Image DMA Controller (idmac) functions */ struct ipuv3_channel *ipu_idmac_get(struct ipu_soc *ipu, unsigned channel); |