From 0939b0a92acca11a5a3b0de5dd70434e17e40ed3 Mon Sep 17 00:00:00 2001 From: Eugen Hristev 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 Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- 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: