From: matthias.bgg@kernel.org
To: robh+dt@kernel.org, mark.rutland@arm.com, ck.hu@mediatek.com,
p.zabel@pengutronix.de, airlied@linux.ie,
mturquette@baylibre.com, sboyd@kernel.org,
ulrich.hecht+renesas@gmail.com,
laurent.pinchart@ideasonboard.com, enric.balletbo@collabora.com
Cc: devicetree@vger.kernel.org, drinkcat@chromium.org,
frank-w@public-files.de, sean.wang@mediatek.com,
linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
wens@csie.org, Matthias Brugger <mbrugger@suse.com>,
linux-mediatek@lists.infradead.org, rdunlap@infradead.org,
Daniel Vetter <daniel@ffwll.ch>,
matthias.bgg@kernel.org,
Matthias Brugger <matthias.bgg@gmail.com>,
hsinyi@chromium.org, linux-clk@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-media@vger.kernel.org
Subject: [PATCH v7 04/13] drm/mediatek: Use regmap for register access
Date: Thu, 13 Feb 2020 21:19:44 +0100 [thread overview]
Message-ID: <20200213201953.15268-5-matthias.bgg@kernel.org> (raw)
In-Reply-To: <20200213201953.15268-1-matthias.bgg@kernel.org>
From: Matthias Brugger <mbrugger@suse.com>
The mmsys memory space is shared between the drm and the
clk driver. Use regmap to access it.
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
---
Changes in v7:
- add R-by from CK
Changes in v6: None
Changes in v5: None
Changes in v4: None
Changes in v3: None
Changes in v2: None
drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 4 +-
drivers/gpu/drm/mediatek/mtk_drm_ddp.c | 50 +++++++++++--------------
drivers/gpu/drm/mediatek/mtk_drm_ddp.h | 4 +-
drivers/gpu/drm/mediatek/mtk_drm_drv.c | 13 ++-----
drivers/gpu/drm/mediatek/mtk_drm_drv.h | 2 +-
5 files changed, 30 insertions(+), 43 deletions(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index 0dfcd1787e65..ea003a225604 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -28,7 +28,7 @@
* @enabled: records whether crtc_enable succeeded
* @planes: array of 4 drm_plane structures, one for each overlay plane
* @pending_planes: whether any plane has pending changes to be applied
- * @config_regs: memory mapped mmsys configuration register space
+ * @config_regs: regmap mapped mmsys configuration register space
* @mutex: handle to one of the ten disp_mutex streams
* @ddp_comp_nr: number of components in ddp_comp
* @ddp_comp: array of pointers the mtk_ddp_comp structures used by this crtc
@@ -50,7 +50,7 @@ struct mtk_drm_crtc {
u32 cmdq_event;
#endif
- void __iomem *config_regs;
+ struct regmap *config_regs;
struct mtk_disp_mutex *mutex;
unsigned int ddp_comp_nr;
struct mtk_ddp_comp **ddp_comp;
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
index 13035c906035..302753744cc6 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
@@ -383,61 +383,53 @@ static unsigned int mtk_ddp_sel_in(enum mtk_ddp_comp_id cur,
return value;
}
-static void mtk_ddp_sout_sel(void __iomem *config_regs,
+static void mtk_ddp_sout_sel(struct regmap *config_regs,
enum mtk_ddp_comp_id cur,
enum mtk_ddp_comp_id next)
{
if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DSI0) {
- writel_relaxed(BLS_TO_DSI_RDMA1_TO_DPI1,
- config_regs + DISP_REG_CONFIG_OUT_SEL);
+ regmap_write(config_regs, DISP_REG_CONFIG_OUT_SEL,
+ BLS_TO_DSI_RDMA1_TO_DPI1);
} else if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DPI0) {
- writel_relaxed(BLS_TO_DPI_RDMA1_TO_DSI,
- config_regs + DISP_REG_CONFIG_OUT_SEL);
- writel_relaxed(DSI_SEL_IN_RDMA,
- config_regs + DISP_REG_CONFIG_DSI_SEL);
- writel_relaxed(DPI_SEL_IN_BLS,
- config_regs + DISP_REG_CONFIG_DPI_SEL);
+ regmap_write(config_regs, DISP_REG_CONFIG_OUT_SEL,
+ BLS_TO_DPI_RDMA1_TO_DSI);
+ regmap_write(config_regs, DISP_REG_CONFIG_DSI_SEL,
+ DSI_SEL_IN_RDMA);
+ regmap_write(config_regs, DISP_REG_CONFIG_DPI_SEL,
+ DPI_SEL_IN_BLS);
}
}
-void mtk_ddp_add_comp_to_path(void __iomem *config_regs,
+void mtk_ddp_add_comp_to_path(struct regmap *config_regs,
enum mtk_ddp_comp_id cur,
enum mtk_ddp_comp_id next)
{
- unsigned int addr, value, reg;
+ unsigned int addr, value;
value = mtk_ddp_mout_en(cur, next, &addr);
- if (value) {
- reg = readl_relaxed(config_regs + addr) | value;
- writel_relaxed(reg, config_regs + addr);
- }
+ if (value)
+ regmap_update_bits(config_regs, addr, value, value);
mtk_ddp_sout_sel(config_regs, cur, next);
value = mtk_ddp_sel_in(cur, next, &addr);
- if (value) {
- reg = readl_relaxed(config_regs + addr) | value;
- writel_relaxed(reg, config_regs + addr);
- }
+ if (value)
+ regmap_update_bits(config_regs, addr, value, value);
}
-void mtk_ddp_remove_comp_from_path(void __iomem *config_regs,
+void mtk_ddp_remove_comp_from_path(struct regmap *config_regs,
enum mtk_ddp_comp_id cur,
enum mtk_ddp_comp_id next)
{
- unsigned int addr, value, reg;
+ unsigned int addr, value;
value = mtk_ddp_mout_en(cur, next, &addr);
- if (value) {
- reg = readl_relaxed(config_regs + addr) & ~value;
- writel_relaxed(reg, config_regs + addr);
- }
+ if (value)
+ regmap_update_bits(config_regs, addr, value, 0);
value = mtk_ddp_sel_in(cur, next, &addr);
- if (value) {
- reg = readl_relaxed(config_regs + addr) & ~value;
- writel_relaxed(reg, config_regs + addr);
- }
+ if (value)
+ regmap_update_bits(config_regs, addr, value, 0);
}
struct mtk_disp_mutex *mtk_disp_mutex_get(struct device *dev, unsigned int id)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.h b/drivers/gpu/drm/mediatek/mtk_drm_ddp.h
index 827be424a148..01ff8b68881f 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.h
+++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.h
@@ -12,10 +12,10 @@ struct regmap;
struct device;
struct mtk_disp_mutex;
-void mtk_ddp_add_comp_to_path(void __iomem *config_regs,
+void mtk_ddp_add_comp_to_path(struct regmap *config_regs,
enum mtk_ddp_comp_id cur,
enum mtk_ddp_comp_id next);
-void mtk_ddp_remove_comp_from_path(void __iomem *config_regs,
+void mtk_ddp_remove_comp_from_path(struct regmap *config_regs,
enum mtk_ddp_comp_id cur,
enum mtk_ddp_comp_id next);
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
index 0563c6813333..b68837ea02b3 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
@@ -6,6 +6,7 @@
#include <linux/component.h>
#include <linux/iommu.h>
+#include <linux/mfd/syscon.h>
#include <linux/module.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
@@ -425,7 +426,6 @@ static int mtk_drm_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct mtk_drm_private *private;
- struct resource *mem;
struct device_node *node;
struct component_match *match = NULL;
int ret;
@@ -437,14 +437,9 @@ static int mtk_drm_probe(struct platform_device *pdev)
private->data = of_device_get_match_data(dev);
- mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- private->config_regs = devm_ioremap_resource(dev, mem);
- if (IS_ERR(private->config_regs)) {
- ret = PTR_ERR(private->config_regs);
- dev_err(dev, "Failed to ioremap mmsys-config resource: %d\n",
- ret);
- return ret;
- }
+ private->config_regs = syscon_node_to_regmap(dev->of_node);
+ if (IS_ERR(private->config_regs))
+ return PTR_ERR(private->config_regs);
/* Iterate over sibling DISP function blocks */
for_each_child_of_node(dev->of_node->parent, node) {
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.h b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
index 17bc99b9f5d4..03201080688d 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.h
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
@@ -39,7 +39,7 @@ struct mtk_drm_private {
struct device_node *mutex_node;
struct device *mutex_dev;
- void __iomem *config_regs;
+ struct regmap *config_regs;
struct device_node *comp_node[DDP_COMPONENT_ID_MAX];
struct mtk_ddp_comp *ddp_comp[DDP_COMPONENT_ID_MAX];
const struct mtk_mmsys_driver_data *data;
--
2.24.1
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next prev parent reply other threads:[~2020-02-13 20:21 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-13 20:19 [PATCH v7 00/13] arm/arm64: mediatek: Fix mmsys device probing matthias.bgg
2020-02-13 20:19 ` [PATCH v7 01/13] dt-bindings: arm: move mmsys description to display matthias.bgg
2020-02-14 6:42 ` CK Hu
2020-02-14 10:01 ` Matthias Brugger
2020-02-14 12:19 ` Enric Balletbo i Serra
2020-02-14 16:22 ` CK Hu
2020-02-13 20:19 ` [PATCH v7 02/13] dt-bindings: display: mediatek: Add mmsys binding description matthias.bgg
2020-02-18 20:31 ` Rob Herring
2020-02-13 20:19 ` [PATCH v7 03/13] dt-bindings: mediatek: Add compatible for mt7623 matthias.bgg
2020-02-13 20:19 ` matthias.bgg [this message]
2020-02-13 20:19 ` [PATCH v7 05/13] drm: mediatek: Omit warning on probe defers matthias.bgg
2020-02-13 20:19 ` [PATCH v7 06/13] media: mtk-mdp: Check return value of of_clk_get matthias.bgg
2020-02-24 17:36 ` Hans Verkuil
2020-02-24 21:47 ` Matthias Brugger
2020-02-13 20:19 ` [PATCH v7 07/13] clk: mediatek: mt2701: switch mmsys to platform device probing matthias.bgg
2020-02-13 20:19 ` [PATCH v7 08/13] clk: mediatek: mt2712e: switch " matthias.bgg
2020-02-13 20:19 ` [PATCH v7 09/13] clk: mediatek: mt6779: switch mmsys " matthias.bgg
2020-02-13 20:19 ` [PATCH v7 10/13] clk: mediatek: mt6797: switch " matthias.bgg
2020-02-13 20:19 ` [PATCH v7 11/13] clk: mediatek: mt8183: switch mmsys " matthias.bgg
2020-02-14 1:52 ` CK Hu
2020-02-13 20:19 ` [PATCH v7 12/13] clk: mediatek: mt8173: " matthias.bgg
2020-02-13 20:19 ` [PATCH v7 13/13] drm/mediatek: Add support for mmsys through a pdev matthias.bgg
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