[PATCH RFC v4 1/4] mmc: dw_mmc: hi3798cv200: rename to dw_mmc-histb

Yang Xiwen via B4 Relay
2023-04-16T09:20:04Z

From: Yang Xiwen <forbidden405@outlook.com>

Rename to dw_mmc-histb and introduce a mechanism similar to
dw-mmc_exynos to support more devices in a single driver. It is a
preparation for introducing extension for Hi3798MV200.

Signed-off-by: Yang Xiwen <forbidden405@outlook.com>
---
drivers/mmc/host/Kconfig | 8 +--
drivers/mmc/host/Makefile | 2 +-
.../host/{dw_mmc-hi3798cv200.c => dw_mmc-histb.c} | 79 ++++++++++++++--------
3 files changed, 57 insertions(+), 32 deletions(-)

diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index 4745fe217ade3..0aef4d845b743 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -779,14 +779,14 @@ config MMC_DW_EXYNOS
Synopsys DesignWare Memory Card Interface driver. Select this option
for platforms based on Exynos4 and Exynos5 SoC's.

-config MMC_DW_HI3798CV200
- tristate "Hi3798CV200 specific extensions for Synopsys DW Memory Card Interface"
+config MMC_DW_HISTB
+ tristate "HiSTB specific extensions for Synopsys DW Memory Card Interface"
depends on MMC_DW
select MMC_DW_PLTFM
help
- This selects support for HiSilicon Hi3798CV200 SoC specific extensions to the
+ This selects support for HiSilicon HiSTB SoC specific extensions to the
Synopsys DesignWare Memory Card Interface driver. Select this option
- for platforms based on HiSilicon Hi3798CV200 SoC.
+ for platforms based on HiSilicon HiSTB SoC.

config MMC_DW_K3
tristate "K3 specific extensions for Synopsys DW Memory Card Interface"
diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile
index a693fa3d3f1cc..0373741afebf1 100644
--- a/drivers/mmc/host/Makefile
+++ b/drivers/mmc/host/Makefile
@@ -50,7 +50,7 @@ obj-$(CONFIG_MMC_DW) += dw_mmc.o
obj-$(CONFIG_MMC_DW_PLTFM) += dw_mmc-pltfm.o
obj-$(CONFIG_MMC_DW_BLUEFIELD) += dw_mmc-bluefield.o
obj-$(CONFIG_MMC_DW_EXYNOS) += dw_mmc-exynos.o
-obj-$(CONFIG_MMC_DW_HI3798CV200) += dw_mmc-hi3798cv200.o
+obj-$(CONFIG_MMC_DW_HISTB) += dw_mmc-histb.o
obj-$(CONFIG_MMC_DW_K3) += dw_mmc-k3.o
obj-$(CONFIG_MMC_DW_PCI) += dw_mmc-pci.o
obj-$(CONFIG_MMC_DW_ROCKCHIP) += dw_mmc-rockchip.o
diff --git a/drivers/mmc/host/dw_mmc-hi3798cv200.c b/drivers/mmc/host/dw_mmc-histb.c
similarity index 69%
rename from drivers/mmc/host/dw_mmc-hi3798cv200.c
rename to drivers/mmc/host/dw_mmc-histb.c
index 6f22fe0540879..106e586bcff4b 100644
--- a/drivers/mmc/host/dw_mmc-hi3798cv200.c
+++ b/drivers/mmc/host/dw_mmc-histb.c
@@ -18,14 +18,29 @@

#define ALL_INT_CLR 0x1ffff

-struct hi3798cv200_priv {
+enum dw_mci_histb_type {
+ DW_MCI_TYPE_HI3798CV200,
+};
+
+static struct dw_mci_histb_compat {
+ const char * const compatible;
+ enum dw_mci_histb_type ctrl_type;
+} histb_compat[] = {
+ {
+ .compatible = "hisilicon,hi3798cv200-dw-mshc",
+ .ctrl_type = DW_MCI_TYPE_HI3798CV200,
+ },
+};
+
+struct dw_mci_histb_priv {
+ enum dw_mci_histb_type ctrl_type;
struct clk *sample_clk;
struct clk *drive_clk;
};

-static void dw_mci_hi3798cv200_set_ios(struct dw_mci *host, struct mmc_ios *ios)
+static void dw_mci_histb_set_ios(struct dw_mci *host, struct mmc_ios *ios)
{
- struct hi3798cv200_priv *priv = host->priv;
+ struct dw_mci_histb_priv *priv = host->priv;
u32 val;

val = mci_readl(host, UHS_REG);
@@ -62,7 +77,7 @@ static int dw_mci_hi3798cv200_execute_tuning(struct dw_mci_slot *slot,
{
static const int degrees[] = { 0, 45, 90, 135, 180, 225, 270, 315 };
struct dw_mci *host = slot->host;
- struct hi3798cv200_priv *priv = host->priv;
+ struct dw_mci_histb_priv *priv = host->priv;
int raise_point = -1, fall_point = -1;
int err, prev_err = -1;
int found = 0;
@@ -118,15 +133,21 @@ static int dw_mci_hi3798cv200_execute_tuning(struct dw_mci_slot *slot,
return err;
}

-static int dw_mci_hi3798cv200_init(struct dw_mci *host)
+static int dw_mci_histb_init(struct dw_mci *host)
{
- struct hi3798cv200_priv *priv;
- int ret;
+ struct dw_mci_histb_priv *priv;
+ struct device_node *np = host->dev->of_node;
+ int ret, idx;

priv = devm_kzalloc(host->dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;

+ for (idx = 0; idx < ARRAY_SIZE(histb_compat); idx++) {
+ if (of_device_is_compatible(np, histb_compat[idx].compatible))
+ priv->ctrl_type = histb_compat[idx].ctrl_type;
+ }
+
priv->sample_clk = devm_clk_get(host->dev, "ciu-sample");
if (IS_ERR(priv->sample_clk)) {
dev_err(host->dev, "failed to get ciu-sample clock\n");
@@ -161,20 +182,29 @@ static int dw_mci_hi3798cv200_init(struct dw_mci *host)

static const struct dw_mci_drv_data hi3798cv200_data = {
.common_caps = MMC_CAP_CMD23,
- .init = dw_mci_hi3798cv200_init,
- .set_ios = dw_mci_hi3798cv200_set_ios,
+ .init = dw_mci_histb_init,
+ .set_ios = dw_mci_histb_set_ios,
.execute_tuning = dw_mci_hi3798cv200_execute_tuning,
};

-static int dw_mci_hi3798cv200_probe(struct platform_device *pdev)
+static const struct of_device_id dw_mci_histb_match[] = {
+ { .compatible = "hisilicon,hi3798cv200-dw-mshc", .data = &hi3798cv200_data },
+ {},
+};
+
+static int dw_mci_histb_probe(struct platform_device *pdev)
{
- return dw_mci_pltfm_register(pdev, &hi3798cv200_data);
+ const struct of_device_id *match;
+
+ match = of_match_node(dw_mci_histb_match, pdev->dev.of_node);
+
+ return dw_mci_pltfm_register(pdev, match->data);
}

-static int dw_mci_hi3798cv200_remove(struct platform_device *pdev)
+static int dw_mci_histb_remove(struct platform_device *pdev)
{
struct dw_mci *host = platform_get_drvdata(pdev);
- struct hi3798cv200_priv *priv = host->priv;
+ struct dw_mci_histb_priv *priv = host->priv;

clk_disable_unprepare(priv->drive_clk);
clk_disable_unprepare(priv->sample_clk);
@@ -184,23 +214,18 @@ static int dw_mci_hi3798cv200_remove(struct platform_device *pdev)
return 0;
}

-static const struct of_device_id dw_mci_hi3798cv200_match[] = {
- { .compatible = "hisilicon,hi3798cv200-dw-mshc", },
- {},
-};
-
-MODULE_DEVICE_TABLE(of, dw_mci_hi3798cv200_match);
-static struct platform_driver dw_mci_hi3798cv200_driver = {
- .probe = dw_mci_hi3798cv200_probe,
- .remove = dw_mci_hi3798cv200_remove,
+MODULE_DEVICE_TABLE(of, dw_mci_histb_match);
+static struct platform_driver dw_mci_histb_driver = {
+ .probe = dw_mci_histb_probe,
+ .remove = dw_mci_histb_remove,
.driver = {
- .name = "dwmmc_hi3798cv200",
+ .name = "dwmmc_histb",
.probe_type = PROBE_PREFER_ASYNCHRONOUS,
- .of_match_table = dw_mci_hi3798cv200_match,
+ .of_match_table = dw_mci_histb_match,
},
};
-module_platform_driver(dw_mci_hi3798cv200_driver);
+module_platform_driver(dw_mci_histb_driver);

-MODULE_DESCRIPTION("HiSilicon Hi3798CV200 Specific DW-MSHC Driver Extension");
+MODULE_DESCRIPTION("HiSilicon HiSTB Specific DW-MSHC Driver Extension");
MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("platform:dwmmc_hi3798cv200");
+MODULE_ALIAS("platform:dwmmc_histb");

--
2.39.2