linux-kernel - [PATCH v4] media: coda: Convert the driver to DT-only

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Date:   Wed,  2 Dec 2020 11:13:26 -0300
From:   Fabio Estevam <festevam@...il.com>
To:     p.zabel@...gutronix.de
Cc:     mchehab@...nel.org, linux-media@...r.kernel.org,
        hverkuil-cisco@...all.nl, andy.shevchenko@...il.com,
        linux-kernel@...r.kernel.org, Fabio Estevam <festevam@...il.com>
Subject: [PATCH v4] media: coda: Convert the driver to DT-only

Since 5.10-rc1 i.MX is a devicetree-only platform, so simplify the code
by removing the unused non-DT support.

Signed-off-by: Fabio Estevam <festevam@...il.com>
---
Changes since v3:
- Add a explicit OF dependency - Andy

 drivers/media/platform/Kconfig            |  2 +-
 drivers/media/platform/coda/coda-common.c | 27 ++---------------------
 include/linux/platform_data/media/coda.h  | 14 ------------
 3 files changed, 3 insertions(+), 40 deletions(-)
 delete mode 100644 include/linux/platform_data/media/coda.h

diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
index ffffef2267f4..9fdbfea06087 100644
--- a/drivers/media/platform/Kconfig
+++ b/drivers/media/platform/Kconfig
@@ -201,7 +201,7 @@ if V4L_MEM2MEM_DRIVERS
 
 config VIDEO_CODA
 	tristate "Chips&Media Coda multi-standard codec IP"
-	depends on VIDEO_DEV && VIDEO_V4L2 && (ARCH_MXC || COMPILE_TEST)
+	depends on VIDEO_DEV && VIDEO_V4L2 && OF && (ARCH_MXC || COMPILE_TEST)
 	select SRAM
 	select VIDEOBUF2_DMA_CONTIG
 	select VIDEOBUF2_VMALLOC
diff --git a/drivers/media/platform/coda/coda-common.c b/drivers/media/platform/coda/coda-common.c
index d30eafea701d..995e95272e51 100644
--- a/drivers/media/platform/coda/coda-common.c
+++ b/drivers/media/platform/coda/coda-common.c
@@ -25,7 +25,6 @@
 #include <linux/slab.h>
 #include <linux/videodev2.h>
 #include <linux/of.h>
-#include <linux/platform_data/media/coda.h>
 #include <linux/ratelimit.h>
 #include <linux/reset.h>
 
@@ -3102,13 +3101,6 @@ static const struct coda_devtype coda_devdata[] = {
 	},
 };
 
-static const struct platform_device_id coda_platform_ids[] = {
-	{ .name = "coda-imx27", .driver_data = CODA_IMX27 },
-	{ /* sentinel */ }
-};
-MODULE_DEVICE_TABLE(platform, coda_platform_ids);
-
-#ifdef CONFIG_OF
 static const struct of_device_id coda_dt_ids[] = {
 	{ .compatible = "fsl,imx27-vpu", .data = &coda_devdata[CODA_IMX27] },
 	{ .compatible = "fsl,imx51-vpu", .data = &coda_devdata[CODA_IMX51] },
@@ -3118,14 +3110,9 @@ static const struct of_device_id coda_dt_ids[] = {
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, coda_dt_ids);
-#endif
 
 static int coda_probe(struct platform_device *pdev)
 {
-	const struct of_device_id *of_id =
-			of_match_device(of_match_ptr(coda_dt_ids), &pdev->dev);
-	const struct platform_device_id *pdev_id;
-	struct coda_platform_data *pdata = pdev->dev.platform_data;
 	struct device_node *np = pdev->dev.of_node;
 	struct gen_pool *pool;
 	struct coda_dev *dev;
@@ -3135,14 +3122,7 @@ static int coda_probe(struct platform_device *pdev)
 	if (!dev)
 		return -ENOMEM;
 
-	pdev_id = of_id ? of_id->data : platform_get_device_id(pdev);
-
-	if (of_id)
-		dev->devtype = of_id->data;
-	else if (pdev_id)
-		dev->devtype = &coda_devdata[pdev_id->driver_data];
-	else
-		return -EINVAL;
+	dev->devtype = of_device_get_match_data(&pdev->dev);
 
 	dev->dev = &pdev->dev;
 	dev->clk_per = devm_clk_get(&pdev->dev, "per");
@@ -3200,10 +3180,8 @@ static int coda_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	/* Get IRAM pool from device tree or platform data */
+	/* Get IRAM pool from device tree */
 	pool = of_gen_pool_get(np, "iram", 0);
-	if (!pool && pdata)
-		pool = gen_pool_get(pdata->iram_dev, NULL);
 	if (!pool) {
 		dev_err(&pdev->dev, "iram pool not available\n");
 		return -ENOMEM;
@@ -3342,7 +3320,6 @@ static struct platform_driver coda_driver = {
 		.of_match_table = of_match_ptr(coda_dt_ids),
 		.pm	= &coda_pm_ops,
 	},
-	.id_table = coda_platform_ids,
 };
 
 module_platform_driver(coda_driver);
diff --git a/include/linux/platform_data/media/coda.h b/include/linux/platform_data/media/coda.h
deleted file mode 100644
index 293b61b60c9d..000000000000
--- a/include/linux/platform_data/media/coda.h
+++ /dev/null
@@ -1,14 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- * Copyright (C) 2013 Philipp Zabel, Pengutronix
- */
-#ifndef PLATFORM_CODA_H
-#define PLATFORM_CODA_H
-
-struct device;
-
-struct coda_platform_data {
-	struct device *iram_dev;
-};
-
-#endif
-- 
2.17.1