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78 lines
2.5 KiB
Diff
78 lines
2.5 KiB
Diff
From 0939b0a92acca11a5a3b0de5dd70434e17e40ed3 Mon Sep 17 00:00:00 2001
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From: Eugen Hristev <eugen.hristev@microchip.com>
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Date: Tue, 13 Apr 2021 12:57:13 +0200
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Subject: [PATCH 171/247] media: atmel: atmel-isc: add support for version
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register
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Add support for version register and print it at probe time.
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Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
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Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
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Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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---
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drivers/media/platform/atmel/atmel-isc-regs.h | 5 +++++
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drivers/media/platform/atmel/atmel-isc.h | 2 ++
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drivers/media/platform/atmel/atmel-sama5d2-isc.c | 5 +++++
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3 files changed, 12 insertions(+)
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--- a/drivers/media/platform/atmel/atmel-isc-regs.h
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+++ b/drivers/media/platform/atmel/atmel-isc-regs.h
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@@ -295,6 +295,11 @@
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/* DMA Address 2 Register */
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#define ISC_DAD2 0x000003fc
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+/* Offset for version register specific to sama5d2 product */
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+#define ISC_SAMA5D2_VERSION_OFFSET 0
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+/* Version Register */
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+#define ISC_VERSION 0x0000040c
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+
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/* Histogram Entry */
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#define ISC_HIS_ENTRY 0x00000410
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--- a/drivers/media/platform/atmel/atmel-isc.h
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+++ b/drivers/media/platform/atmel/atmel-isc.h
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@@ -152,6 +152,7 @@ struct isc_ctrls {
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* @rlp: Offset for the RLP register
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* @his: Offset for the HIS related registers
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* @dma: Offset for the DMA related registers
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+ * @version: Offset for the version register
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*/
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struct isc_reg_offsets {
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u32 csc;
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@@ -161,6 +162,7 @@ struct isc_reg_offsets {
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u32 rlp;
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u32 his;
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u32 dma;
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+ u32 version;
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};
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/*
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--- a/drivers/media/platform/atmel/atmel-sama5d2-isc.c
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+++ b/drivers/media/platform/atmel/atmel-sama5d2-isc.c
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@@ -210,6 +210,7 @@ static int atmel_isc_probe(struct platfo
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struct isc_subdev_entity *subdev_entity;
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int irq;
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int ret;
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+ u32 ver;
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isc = devm_kzalloc(dev, sizeof(*isc), GFP_KERNEL);
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if (!isc)
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@@ -258,6 +259,7 @@ static int atmel_isc_probe(struct platfo
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isc->offsets.rlp = ISC_SAMA5D2_RLP_OFFSET;
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isc->offsets.his = ISC_SAMA5D2_HIS_OFFSET;
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isc->offsets.dma = ISC_SAMA5D2_DMA_OFFSET;
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+ isc->offsets.version = ISC_SAMA5D2_VERSION_OFFSET;
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/* sama5d2-isc - 8 bits per beat */
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isc->dcfg = ISC_DCFG_YMBSIZE_BEATS8 | ISC_DCFG_CMBSIZE_BEATS8;
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@@ -346,6 +348,9 @@ static int atmel_isc_probe(struct platfo
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pm_runtime_enable(dev);
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pm_request_idle(dev);
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+ regmap_read(isc->regmap, ISC_VERSION + isc->offsets.version, &ver);
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+ dev_info(dev, "Microchip ISC version %x\n", ver);
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+
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return 0;
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cleanup_subdev:
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