[PATCH v4, 02/10] soc: mediatek: mmsys: Create struct mtk_mmsys to store context data

Yongqiang Niu
2021-01-05T03:07:45Z

Apart from the driver data, in order to extend the driver to support more
and more SoCs, we will need to store other configuration data. So, create
a mtk_mmsys struct to encapsulate all that information.

Signed-off-by: CK Hu <ck.hu@mediatek.com>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com>
Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
---
drivers/soc/mediatek/mmsys/mtk-mmsys.c | 47 +++++++++++++++++++---------------
1 file changed, 27 insertions(+), 20 deletions(-)

diff --git a/drivers/soc/mediatek/mmsys/mtk-mmsys.c b/drivers/soc/mediatek/mmsys/mtk-mmsys.c
index 18f9397..6c03282 100644
--- a/drivers/soc/mediatek/mmsys/mtk-mmsys.c
+++ b/drivers/soc/mediatek/mmsys/mtk-mmsys.c
@@ -77,6 +77,11 @@ struct mtk_mmsys_driver_data {
const char *clk_driver;
};

+struct mtk_mmsys {
+ void __iomem *regs;
+ const struct mtk_mmsys_driver_data *data;
+};
+
static const struct mtk_mmsys_driver_data mt2701_mmsys_driver_data = {
.clk_driver = "clk-mt2701-mm",
};
@@ -259,21 +264,21 @@ void mtk_mmsys_ddp_connect(struct device *dev,
enum mtk_ddp_comp_id cur,
enum mtk_ddp_comp_id next)
{
- void __iomem *config_regs = dev_get_drvdata(dev);
+ struct mtk_mmsys *mmsys = dev_get_drvdata(dev);
unsigned int addr, value, reg;

value = mtk_mmsys_ddp_mout_en(cur, next, &addr);
if (value) {
- reg = readl_relaxed(config_regs + addr) | value;
- writel_relaxed(reg, config_regs + addr);
+ reg = readl_relaxed(mmsys->regs + addr) | value;
+ writel_relaxed(reg, mmsys->regs + addr);
}

- mtk_mmsys_ddp_sout_sel(config_regs, cur, next);
+ mtk_mmsys_ddp_sout_sel(mmsys->regs, cur, next);

value = mtk_mmsys_ddp_sel_in(cur, next, &addr);
if (value) {
- reg = readl_relaxed(config_regs + addr) | value;
- writel_relaxed(reg, config_regs + addr);
+ reg = readl_relaxed(mmsys->regs + addr) | value;
+ writel_relaxed(reg, mmsys->regs + addr);
}
}
EXPORT_SYMBOL_GPL(mtk_mmsys_ddp_connect);
@@ -282,44 +287,46 @@ void mtk_mmsys_ddp_disconnect(struct device *dev,
enum mtk_ddp_comp_id cur,
enum mtk_ddp_comp_id next)
{
- void __iomem *config_regs = dev_get_drvdata(dev);
+ struct mtk_mmsys *mmsys = dev_get_drvdata(dev);
unsigned int addr, value, reg;

value = mtk_mmsys_ddp_mout_en(cur, next, &addr);
if (value) {
- reg = readl_relaxed(config_regs + addr) & ~value;
- writel_relaxed(reg, config_regs + addr);
+ reg = readl_relaxed(mmsys->regs + addr) & ~value;
+ writel_relaxed(reg, mmsys->regs + addr);
}

value = mtk_mmsys_ddp_sel_in(cur, next, &addr);
if (value) {
- reg = readl_relaxed(config_regs + addr) & ~value;
- writel_relaxed(reg, config_regs + addr);
+ reg = readl_relaxed(mmsys->regs + addr) & ~value;
+ writel_relaxed(reg, mmsys->regs + addr);
}
}
EXPORT_SYMBOL_GPL(mtk_mmsys_ddp_disconnect);

static int mtk_mmsys_probe(struct platform_device *pdev)
{
- const struct mtk_mmsys_driver_data *data;
struct device *dev = &pdev->dev;
struct platform_device *clks;
struct platform_device *drm;
- void __iomem *config_regs;
+ struct mtk_mmsys *mmsys;
int ret;

- config_regs = devm_platform_ioremap_resource(pdev, 0);
- if (IS_ERR(config_regs)) {
- ret = PTR_ERR(config_regs);
+ mmsys = devm_kzalloc(dev, sizeof(*mmsys), GFP_KERNEL);
+ if (!mmsys)
+ return -ENOMEM;
+
+ mmsys->regs = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(mmsys->regs)) {
+ ret = PTR_ERR(mmsys->regs);
dev_err(dev, "Failed to ioremap mmsys registers: %d\n", ret);
return ret;
}

- platform_set_drvdata(pdev, config_regs);
-
- data = of_device_get_match_data(&pdev->dev);
+ mmsys->data = of_device_get_match_data(&pdev->dev);
+ platform_set_drvdata(pdev, mmsys);

- clks = platform_device_register_data(&pdev->dev, data->clk_driver,
+ clks = platform_device_register_data(&pdev->dev, mmsys->data->clk_driver,
PLATFORM_DEVID_AUTO, NULL, 0);
if (IS_ERR(clks))
return PTR_ERR(clks);
--
1.8.1.1.dirty