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PM / devfreq: rockchip-dfi: Add SoC specific init function

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Move the RK3399 specifics to a SoC specific init function to make
the way free for supporting other SoCs later.

Link: https://lore.kernel.org/lkml/20230704093242.583575-5-s.hauer@pengutronix.de/
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
This commit is contained in:
Sascha Hauer 2023-07-04 11:32:20 +02:00 committed by Chanwoo Choi
parent 9325b3ec92
commit 559dc2876c
1 changed files with 33 additions and 15 deletions
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48
drivers/devfreq/event/rockchip-dfi.c
View file

@ -17,6 +17,7 @@
#include <linux/slab.h>
#include <linux/list.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <soc/rockchip/rk3399_grf.h>
@ -55,27 +56,21 @@ struct rockchip_dfi {
void __iomem *regs;
struct regmap *regmap_pmu;
struct clk *clk;
u32 ddr_type;
};
static void rockchip_dfi_start_hardware_counter(struct devfreq_event_dev *edev)
{
struct rockchip_dfi *dfi = devfreq_event_get_drvdata(edev);
void __iomem *dfi_regs = dfi->regs;
u32 val;
u32 ddr_type;
/* get ddr type */
regmap_read(dfi->regmap_pmu, RK3399_PMUGRF_OS_REG2, &val);
ddr_type = (val >> RK3399_PMUGRF_DDRTYPE_SHIFT) &
RK3399_PMUGRF_DDRTYPE_MASK;
/* clear DDRMON_CTRL setting */
writel_relaxed(CLR_DDRMON_CTRL, dfi_regs + DDRMON_CTRL);
/* set ddr type to dfi */
if (ddr_type == RK3399_PMUGRF_DDRTYPE_LPDDR3)
if (dfi->ddr_type == RK3399_PMUGRF_DDRTYPE_LPDDR3)
writel_relaxed(LPDDR3_EN, dfi_regs + DDRMON_CTRL);
else if (ddr_type == RK3399_PMUGRF_DDRTYPE_LPDDR4)
else if (dfi->ddr_type == RK3399_PMUGRF_DDRTYPE_LPDDR4)
writel_relaxed(LPDDR4_EN, dfi_regs + DDRMON_CTRL);
/* enable count, use software mode */
@ -167,8 +162,26 @@ static const struct devfreq_event_ops rockchip_dfi_ops = {
.set_event = rockchip_dfi_set_event,
};
static int rk3399_dfi_init(struct rockchip_dfi *dfi)
{
struct regmap *regmap_pmu = dfi->regmap_pmu;
u32 val;
dfi->clk = devm_clk_get(dfi->dev, "pclk_ddr_mon");
if (IS_ERR(dfi->clk))
return dev_err_probe(dfi->dev, PTR_ERR(dfi->clk),
"Cannot get the clk pclk_ddr_mon\n");
/* get ddr type */
regmap_read(regmap_pmu, RK3399_PMUGRF_OS_REG2, &val);
dfi->ddr_type = (val >> RK3399_PMUGRF_DDRTYPE_SHIFT) &
RK3399_PMUGRF_DDRTYPE_MASK;
return 0;
};
static const struct of_device_id rockchip_dfi_id_match[] = {
{ .compatible = "rockchip,rk3399-dfi" },
{ .compatible = "rockchip,rk3399-dfi", .data = rk3399_dfi_init },
{ },
};
MODULE_DEVICE_TABLE(of, rockchip_dfi_id_match);
@ -179,6 +192,12 @@ static int rockchip_dfi_probe(struct platform_device *pdev)
struct rockchip_dfi *dfi;
struct devfreq_event_desc *desc;
struct device_node *np = pdev->dev.of_node, *node;
int (*soc_init)(struct rockchip_dfi *dfi);
int ret;
soc_init = of_device_get_match_data(&pdev->dev);
if (!soc_init)
return -EINVAL;
dfi = devm_kzalloc(dev, sizeof(*dfi), GFP_KERNEL);
if (!dfi)
@ -188,11 +207,6 @@ static int rockchip_dfi_probe(struct platform_device *pdev)
if (IS_ERR(dfi->regs))
return PTR_ERR(dfi->regs);
dfi->clk = devm_clk_get(dev, "pclk_ddr_mon");
if (IS_ERR(dfi->clk))
return dev_err_probe(dev, PTR_ERR(dfi->clk),
"Cannot get the clk pclk_ddr_mon\n");
node = of_parse_phandle(np, "rockchip,pmu", 0);
if (!node)
return dev_err_probe(&pdev->dev, -ENODEV, "Can't find pmu_grf registers\n");
@ -209,6 +223,10 @@ static int rockchip_dfi_probe(struct platform_device *pdev)
desc->driver_data = dfi;
desc->name = np->name;
ret = soc_init(dfi);
if (ret)
return ret;
dfi->edev = devm_devfreq_event_add_edev(&pdev->dev, desc);
if (IS_ERR(dfi->edev)) {
dev_err(&pdev->dev,