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authorEugen Hristev <eugen.hristev@microchip.com>2021-04-13 12:57:13 +0200
committerMauro Carvalho Chehab <mchehab+huawei@kernel.org>2021-06-08 13:06:41 +0200
commitd51470069eb169d54f2b14d07d613b69f62615b8 (patch)
treea9d2123545d99007eae9c13652aaf1d71836c60e
parente891009857716e17129899fe6345e7968010917f (diff)
media: atmel: atmel-isc: add support for version register
Add support for version register and print it at probe time. Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
-rw-r--r--drivers/media/platform/atmel/atmel-isc-regs.h5
-rw-r--r--drivers/media/platform/atmel/atmel-isc.h2
-rw-r--r--drivers/media/platform/atmel/atmel-sama5d2-isc.c5
3 files changed, 12 insertions, 0 deletions
diff --git a/drivers/media/platform/atmel/atmel-isc-regs.h b/drivers/media/platform/atmel/atmel-isc-regs.h
index 4940998c82a2..344668dcfcf4 100644
--- a/drivers/media/platform/atmel/atmel-isc-regs.h
+++ b/drivers/media/platform/atmel/atmel-isc-regs.h
@@ -295,6 +295,11 @@
/* DMA Address 2 Register */
#define ISC_DAD2 0x000003fc
+/* Offset for version register specific to sama5d2 product */
+#define ISC_SAMA5D2_VERSION_OFFSET 0
+/* Version Register */
+#define ISC_VERSION 0x0000040c
+
/* Histogram Entry */
#define ISC_HIS_ENTRY 0x00000410
diff --git a/drivers/media/platform/atmel/atmel-isc.h b/drivers/media/platform/atmel/atmel-isc.h
index 52a9199d65ee..676a5be1ee8c 100644
--- a/drivers/media/platform/atmel/atmel-isc.h
+++ b/drivers/media/platform/atmel/atmel-isc.h
@@ -153,6 +153,7 @@ struct isc_ctrls {
* @rlp: Offset for the RLP register
* @his: Offset for the HIS related registers
* @dma: Offset for the DMA related registers
+ * @version: Offset for the version register
*/
struct isc_reg_offsets {
u32 csc;
@@ -162,6 +163,7 @@ struct isc_reg_offsets {
u32 rlp;
u32 his;
u32 dma;
+ u32 version;
};
/*
diff --git a/drivers/media/platform/atmel/atmel-sama5d2-isc.c b/drivers/media/platform/atmel/atmel-sama5d2-isc.c
index 0b31dcf1443b..059dc5d3c664 100644
--- a/drivers/media/platform/atmel/atmel-sama5d2-isc.c
+++ b/drivers/media/platform/atmel/atmel-sama5d2-isc.c
@@ -189,6 +189,7 @@ static int atmel_isc_probe(struct platform_device *pdev)
struct isc_subdev_entity *subdev_entity;
int irq;
int ret;
+ u32 ver;
isc = devm_kzalloc(dev, sizeof(*isc), GFP_KERNEL);
if (!isc)
@@ -237,6 +238,7 @@ static int atmel_isc_probe(struct platform_device *pdev)
isc->offsets.rlp = ISC_SAMA5D2_RLP_OFFSET;
isc->offsets.his = ISC_SAMA5D2_HIS_OFFSET;
isc->offsets.dma = ISC_SAMA5D2_DMA_OFFSET;
+ isc->offsets.version = ISC_SAMA5D2_VERSION_OFFSET;
/* sama5d2-isc - 8 bits per beat */
isc->dcfg = ISC_DCFG_YMBSIZE_BEATS8 | ISC_DCFG_CMBSIZE_BEATS8;
@@ -332,6 +334,9 @@ static int atmel_isc_probe(struct platform_device *pdev)
pm_runtime_enable(dev);
pm_request_idle(dev);
+ regmap_read(isc->regmap, ISC_VERSION + isc->offsets.version, &ver);
+ dev_info(dev, "Microchip ISC version %x\n", ver);
+
return 0;
cleanup_subdev:

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