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- From 0939b0a92acca11a5a3b0de5dd70434e17e40ed3 Mon Sep 17 00:00:00 2001
- From: Eugen Hristev <[email protected]>
- Date: Tue, 13 Apr 2021 12:57:13 +0200
- Subject: [PATCH 171/247] 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 <[email protected]>
- Signed-off-by: Hans Verkuil <[email protected]>
- Signed-off-by: Mauro Carvalho Chehab <[email protected]>
- ---
- drivers/media/platform/atmel/atmel-isc-regs.h | 5 +++++
- drivers/media/platform/atmel/atmel-isc.h | 2 ++
- drivers/media/platform/atmel/atmel-sama5d2-isc.c | 5 +++++
- 3 files changed, 12 insertions(+)
- --- 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
-
- --- a/drivers/media/platform/atmel/atmel-isc.h
- +++ b/drivers/media/platform/atmel/atmel-isc.h
- @@ -152,6 +152,7 @@ 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;
- @@ -161,6 +162,7 @@ struct isc_reg_offsets {
- u32 rlp;
- u32 his;
- u32 dma;
- + u32 version;
- };
-
- /*
- --- a/drivers/media/platform/atmel/atmel-sama5d2-isc.c
- +++ b/drivers/media/platform/atmel/atmel-sama5d2-isc.c
- @@ -210,6 +210,7 @@ static int atmel_isc_probe(struct platfo
- struct isc_subdev_entity *subdev_entity;
- int irq;
- int ret;
- + u32 ver;
-
- isc = devm_kzalloc(dev, sizeof(*isc), GFP_KERNEL);
- if (!isc)
- @@ -258,6 +259,7 @@ static int atmel_isc_probe(struct platfo
- 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;
- @@ -346,6 +348,9 @@ static int atmel_isc_probe(struct platfo
- 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:
|
