linux-kernel - [PATCH v3 02/12] drm/mediatek: move hardware register to node data

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Message-ID: <20180921032822.30771-3-bibby.hsieh@mediatek.com>
Date:   Fri, 21 Sep 2018 11:28:12 +0800
From:   Bibby Hsieh <bibby.hsieh@...iatek.com>
To:     David Airlie <airlied@...ux.ie>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        <dri-devel@...ts.freedesktop.org>,
        <linux-mediatek@...ts.infradead.org>
CC:     Yingjoe Chen <yingjoe.chen@...iatek.com>,
        Cawa Cheng <cawa.cheng@...iatek.com>,
        Daniel Kurtz <djkurtz@...omium.org>,
        Bibby Hsieh <bibby.hsieh@...iatek.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        YT Shen <yt.shen@...iatek.com>,
        Thierry Reding <thierry.reding@...il.com>,
        CK Hu <ck.hu@...iatek.com>, Mao Huang <littlecvr@...omium.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        Sascha Hauer <kernel@...gutronix.de>,
        chunhui dai <chunhui.dai@...iatek.com>
Subject: [PATCH v3 02/12] drm/mediatek: move hardware register to node data

From: chunhui dai <chunhui.dai@...iatek.com>

The address of register DPI_H_FRE_CON is different in different IC.
Using of_node data to find this address.

Signed-off-by: chunhui dai <chunhui.dai@...iatek.com>
---
 drivers/gpu/drm/mediatek/mtk_dpi.c      | 19 ++++++++++++++++---
 drivers/gpu/drm/mediatek/mtk_dpi_regs.h |  1 -
 2 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
index d9373e67d328..74a32833bde1 100644
--- a/drivers/gpu/drm/mediatek/mtk_dpi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
@@ -18,6 +18,7 @@
 #include <linux/component.h>
 #include <linux/platform_device.h>
 #include <linux/of.h>
+#include <linux/of_device.h>
 #include <linux/of_graph.h>
 #include <linux/interrupt.h>
 #include <linux/types.h>
@@ -72,6 +73,7 @@ struct mtk_dpi {
 	struct clk *tvd_clk;
 	int irq;
 	struct drm_display_mode mode;
+	const struct mtk_dpi_conf *conf;
 	enum mtk_dpi_out_color_format color_format;
 	enum mtk_dpi_out_yc_map yc_map;
 	enum mtk_dpi_out_bit_num bit_num;
@@ -117,6 +119,10 @@ struct mtk_dpi_yc_limit {
 	u16 c_bottom;
 };
 
+struct mtk_dpi_conf {
+	u32 reg_h_fre_con;
+};
+
 static void mtk_dpi_mask(struct mtk_dpi *dpi, u32 offset, u32 val, u32 mask)
 {
 	u32 tmp = readl(dpi->regs + offset) & ~mask;
@@ -342,7 +348,7 @@ static void mtk_dpi_config_swap_input(struct mtk_dpi *dpi, bool enable)
 
 static void mtk_dpi_config_2n_h_fre(struct mtk_dpi *dpi)
 {
-	mtk_dpi_mask(dpi, DPI_H_FRE_CON, H_FRE_2N, H_FRE_2N);
+	mtk_dpi_mask(dpi, dpi->conf->reg_h_fre_con, H_FRE_2N, H_FRE_2N);
 }
 
 static void mtk_dpi_config_color_format(struct mtk_dpi *dpi,
@@ -668,6 +674,10 @@ static const struct component_ops mtk_dpi_component_ops = {
 	.unbind = mtk_dpi_unbind,
 };
 
+static const struct mtk_dpi_conf mt8173_conf = {
+	.reg_h_fre_con = 0xe0,
+};
+
 static int mtk_dpi_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
@@ -682,6 +692,7 @@ static int mtk_dpi_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	dpi->dev = dev;
+	dpi->conf = (struct mtk_dpi_conf *)of_device_get_match_data(dev);
 
 	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	dpi->regs = devm_ioremap_resource(dev, mem);
@@ -761,8 +772,10 @@ static int mtk_dpi_remove(struct platform_device *pdev)
 }
 
 static const struct of_device_id mtk_dpi_of_ids[] = {
-	{ .compatible = "mediatek,mt8173-dpi", },
-	{}
+	{ .compatible = "mediatek,mt8173-dpi",
+	  .data = &mt8173_conf,
+	},
+	{ },
 };
 
 struct platform_driver mtk_dpi_driver = {
diff --git a/drivers/gpu/drm/mediatek/mtk_dpi_regs.h b/drivers/gpu/drm/mediatek/mtk_dpi_regs.h
index 4b6ad4751a31..040444d7718d 100644
--- a/drivers/gpu/drm/mediatek/mtk_dpi_regs.h
+++ b/drivers/gpu/drm/mediatek/mtk_dpi_regs.h
@@ -223,6 +223,5 @@
 #define ESAV_CODE2			(0xFFF << 0)
 #define ESAV_CODE3_MSB			BIT(16)
 
-#define DPI_H_FRE_CON		0xE0
 #define H_FRE_2N			BIT(25)
 #endif /* __MTK_DPI_REGS_H */
-- 
2.12.5.2.gbdf23ab