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build/patch/kernel/archive/rk322x-5.18/03-0003-extend-rockchip-dfi-driver.patch

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From 415ed43c9b64ca38bc433bd5dc0359292dd80380 Mon Sep 17 00:00:00 2001
From: Paolo Sabatino <paolo.sabatino@gmail.com>
Date: Tue, 6 Jul 2021 14:25:41 +0000
Subject: [PATCH 3/5] rk3228/rk3328: extend rockchip dfi driver
---
arch/arm/boot/dts/rk322x.dtsi | 7 +
drivers/devfreq/event/rockchip-dfi.c | 598 ++++++++++++++++++++++++---
2 files changed, 557 insertions(+), 48 deletions(-)
diff --git a/arch/arm/boot/dts/rk322x.dtsi b/arch/arm/boot/dts/rk322x.dtsi
index ad98fcf37..7e06acc31 100644
--- a/arch/arm/boot/dts/rk322x.dtsi
+++ b/arch/arm/boot/dts/rk322x.dtsi
@@ -97,6 +97,13 @@ opp-1200000000 {
};
};
+ dfi: dfi@11210000 {
+ reg = <0x11210000 0x400>;
+ compatible = "rockchip,rk3228-dfi";
+ rockchip,grf = <&grf>;
+ status = "okay";
+ };
+
arm-pmu {
compatible = "arm,cortex-a7-pmu";
interrupts = <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>,
diff --git a/drivers/devfreq/event/rockchip-dfi.c b/drivers/devfreq/event/rockchip-dfi.c
index 9a88faaf8..01fb84b99 100644
--- a/drivers/devfreq/event/rockchip-dfi.c
+++ b/drivers/devfreq/event/rockchip-dfi.c
@@ -18,25 +18,68 @@
#include <linux/list.h>
#include <linux/of.h>
-#include <soc/rockchip/rk3399_grf.h>
-
-#define RK3399_DMC_NUM_CH 2
-
+#define PX30_PMUGRF_OS_REG2 0x208
+
+#define RK3128_GRF_SOC_CON0 0x140
+#define RK3128_GRF_OS_REG1 0x1cc
+#define RK3128_GRF_DFI_WRNUM 0x220
+#define RK3128_GRF_DFI_RDNUM 0x224
+#define RK3128_GRF_DFI_TIMERVAL 0x22c
+#define RK3128_DDR_MONITOR_EN ((1 << (16 + 6)) + (1 << 6))
+#define RK3128_DDR_MONITOR_DISB ((1 << (16 + 6)) + (0 << 6))
+
+#define RK3228_GRF_OS_REG2 0x5d0
+
+#define RK3288_PMU_SYS_REG2 0x9c
+#define RK3288_GRF_SOC_CON4 0x254
+#define RK3288_GRF_SOC_STATUS(n) (0x280 + (n) * 4)
+#define RK3288_DFI_EN (0x30003 << 14)
+#define RK3288_DFI_DIS (0x30000 << 14)
+#define RK3288_LPDDR_SEL (0x10001 << 13)
+#define RK3288_DDR3_SEL (0x10000 << 13)
+
+#define RK3328_GRF_OS_REG2 0x5d0
+
+#define RK3368_GRF_DDRC0_CON0 0x600
+#define RK3368_GRF_SOC_STATUS5 0x494
+#define RK3368_GRF_SOC_STATUS6 0x498
+#define RK3368_GRF_SOC_STATUS8 0x4a0
+#define RK3368_GRF_SOC_STATUS9 0x4a4
+#define RK3368_GRF_SOC_STATUS10 0x4a8
+#define RK3368_DFI_EN (0x30003 << 5)
+#define RK3368_DFI_DIS (0x30000 << 5)
+
+#define MAX_DMC_NUM_CH 2
+#define READ_DRAMTYPE_INFO(n) (((n) >> 13) & 0x7)
+#define READ_CH_INFO(n) (((n) >> 28) & 0x3)
/* DDRMON_CTRL */
-#define DDRMON_CTRL 0x04
-#define CLR_DDRMON_CTRL (0x1f0000 << 0)
-#define LPDDR4_EN (0x10001 << 4)
-#define HARDWARE_EN (0x10001 << 3)
-#define LPDDR3_EN (0x10001 << 2)
-#define SOFTWARE_EN (0x10001 << 1)
-#define SOFTWARE_DIS (0x10000 << 1)
-#define TIME_CNT_EN (0x10001 << 0)
+#define DDRMON_CTRL 0x04
+#define CLR_DDRMON_CTRL (0x3f0000 << 0)
+#define DDR4_EN (0x10001 << 5)
+#define LPDDR4_EN (0x10001 << 4)
+#define HARDWARE_EN (0x10001 << 3)
+#define LPDDR2_3_EN (0x10001 << 2)
+#define SOFTWARE_EN (0x10001 << 1)
+#define SOFTWARE_DIS (0x10000 << 1)
+#define TIME_CNT_EN (0x10001 << 0)
#define DDRMON_CH0_COUNT_NUM 0x28
#define DDRMON_CH0_DFI_ACCESS_NUM 0x2c
#define DDRMON_CH1_COUNT_NUM 0x3c
#define DDRMON_CH1_DFI_ACCESS_NUM 0x40
+/* pmu grf */
+#define PMUGRF_OS_REG2 0x308
+
+enum {
+ DDR4 = 0,
+ DDR3 = 3,
+ LPDDR2 = 5,
+ LPDDR3 = 6,
+ LPDDR4 = 7,
+ UNUSED = 0xFF
+};
+
struct dmc_usage {
u32 access;
u32 total;
@@ -50,33 +93,261 @@ struct dmc_usage {
struct rockchip_dfi {
struct devfreq_event_dev *edev;
struct devfreq_event_desc *desc;
- struct dmc_usage ch_usage[RK3399_DMC_NUM_CH];
+ struct dmc_usage ch_usage[MAX_DMC_NUM_CH];
struct device *dev;
void __iomem *regs;
struct regmap *regmap_pmu;
+ struct regmap *regmap_grf;
+ struct regmap *regmap_pmugrf;
struct clk *clk;
+ u32 dram_type;
+ /*
+ * available mask, 1: available, 0: not available
+ * each bit represent a channel
+ */
+ u32 ch_msk;
+};
+
+static void rk3128_dfi_start_hardware_counter(struct devfreq_event_dev *edev)
+{
+ struct rockchip_dfi *info = devfreq_event_get_drvdata(edev);
+
+ regmap_write(info->regmap_grf,
+ RK3128_GRF_SOC_CON0,
+ RK3128_DDR_MONITOR_EN);
+}
+
+static void rk3128_dfi_stop_hardware_counter(struct devfreq_event_dev *edev)
+{
+ struct rockchip_dfi *info = devfreq_event_get_drvdata(edev);
+
+ regmap_write(info->regmap_grf,
+ RK3128_GRF_SOC_CON0,
+ RK3128_DDR_MONITOR_DISB);
+}
+
+static int rk3128_dfi_disable(struct devfreq_event_dev *edev)
+{
+ rk3128_dfi_stop_hardware_counter(edev);
+
+ return 0;
+}
+
+static int rk3128_dfi_enable(struct devfreq_event_dev *edev)
+{
+ rk3128_dfi_start_hardware_counter(edev);
+
+ return 0;
+}
+
+static int rk3128_dfi_set_event(struct devfreq_event_dev *edev)
+{
+ return 0;
+}
+
+static int rk3128_dfi_get_event(struct devfreq_event_dev *edev,
+ struct devfreq_event_data *edata)
+{
+ struct rockchip_dfi *info = devfreq_event_get_drvdata(edev);
+ unsigned long flags;
+ u32 dfi_wr, dfi_rd, dfi_timer;
+
+ local_irq_save(flags);
+
+ rk3128_dfi_stop_hardware_counter(edev);
+
+ regmap_read(info->regmap_grf, RK3128_GRF_DFI_WRNUM, &dfi_wr);
+ regmap_read(info->regmap_grf, RK3128_GRF_DFI_RDNUM, &dfi_rd);
+ regmap_read(info->regmap_grf, RK3128_GRF_DFI_TIMERVAL, &dfi_timer);
+
+ edata->load_count = (dfi_wr + dfi_rd) * 4;
+ edata->total_count = dfi_timer;
+
+ rk3128_dfi_start_hardware_counter(edev);
+
+ local_irq_restore(flags);
+
+ return 0;
+}
+
+static const struct devfreq_event_ops rk3128_dfi_ops = {
+ .disable = rk3128_dfi_disable,
+ .enable = rk3128_dfi_enable,
+ .get_event = rk3128_dfi_get_event,
+ .set_event = rk3128_dfi_set_event,
+};
+
+static void rk3288_dfi_start_hardware_counter(struct devfreq_event_dev *edev)
+{
+ struct rockchip_dfi *info = devfreq_event_get_drvdata(edev);
+
+ regmap_write(info->regmap_grf, RK3288_GRF_SOC_CON4, RK3288_DFI_EN);
+}
+
+static void rk3288_dfi_stop_hardware_counter(struct devfreq_event_dev *edev)
+{
+ struct rockchip_dfi *info = devfreq_event_get_drvdata(edev);
+
+ regmap_write(info->regmap_grf, RK3288_GRF_SOC_CON4, RK3288_DFI_DIS);
+}
+
+static int rk3288_dfi_disable(struct devfreq_event_dev *edev)
+{
+ rk3288_dfi_stop_hardware_counter(edev);
+
+ return 0;
+}
+
+static int rk3288_dfi_enable(struct devfreq_event_dev *edev)
+{
+ rk3288_dfi_start_hardware_counter(edev);
+
+ return 0;
+}
+
+static int rk3288_dfi_set_event(struct devfreq_event_dev *edev)
+{
+ return 0;
+}
+
+static int rk3288_dfi_get_busier_ch(struct devfreq_event_dev *edev)
+{
+ struct rockchip_dfi *info = devfreq_event_get_drvdata(edev);
+ u32 tmp, max = 0;
+ u32 i, busier_ch = 0;
+ u32 rd_count, wr_count, total_count;
+
+ rk3288_dfi_stop_hardware_counter(edev);
+
+ /* Find out which channel is busier */
+ for (i = 0; i < MAX_DMC_NUM_CH; i++) {
+ if (!(info->ch_msk & BIT(i)))
+ continue;
+ regmap_read(info->regmap_grf,
+ RK3288_GRF_SOC_STATUS(11 + i * 4), &wr_count);
+ regmap_read(info->regmap_grf,
+ RK3288_GRF_SOC_STATUS(12 + i * 4), &rd_count);
+ regmap_read(info->regmap_grf,
+ RK3288_GRF_SOC_STATUS(14 + i * 4), &total_count);
+ info->ch_usage[i].access = (wr_count + rd_count) * 4;
+ info->ch_usage[i].total = total_count;
+ tmp = info->ch_usage[i].access;
+ if (tmp > max) {
+ busier_ch = i;
+ max = tmp;
+ }
+ }
+ rk3288_dfi_start_hardware_counter(edev);
+
+ return busier_ch;
+}
+
+static int rk3288_dfi_get_event(struct devfreq_event_dev *edev,
+ struct devfreq_event_data *edata)
+{
+ struct rockchip_dfi *info = devfreq_event_get_drvdata(edev);
+ int busier_ch;
+ unsigned long flags;
+
+ local_irq_save(flags);
+ busier_ch = rk3288_dfi_get_busier_ch(edev);
+ local_irq_restore(flags);
+
+ edata->load_count = info->ch_usage[busier_ch].access;
+ edata->total_count = info->ch_usage[busier_ch].total;
+
+ return 0;
+}
+
+static const struct devfreq_event_ops rk3288_dfi_ops = {
+ .disable = rk3288_dfi_disable,
+ .enable = rk3288_dfi_enable,
+ .get_event = rk3288_dfi_get_event,
+ .set_event = rk3288_dfi_set_event,
+};
+
+static void rk3368_dfi_start_hardware_counter(struct devfreq_event_dev *edev)
+{
+ struct rockchip_dfi *info = devfreq_event_get_drvdata(edev);
+
+ regmap_write(info->regmap_grf, RK3368_GRF_DDRC0_CON0, RK3368_DFI_EN);
+}
+
+static void rk3368_dfi_stop_hardware_counter(struct devfreq_event_dev *edev)
+{
+ struct rockchip_dfi *info = devfreq_event_get_drvdata(edev);
+
+ regmap_write(info->regmap_grf, RK3368_GRF_DDRC0_CON0, RK3368_DFI_DIS);
+}
+
+static int rk3368_dfi_disable(struct devfreq_event_dev *edev)
+{
+ rk3368_dfi_stop_hardware_counter(edev);
+
+ return 0;
+}
+
+static int rk3368_dfi_enable(struct devfreq_event_dev *edev)
+{
+ rk3368_dfi_start_hardware_counter(edev);
+
+ return 0;
+}
+
+static int rk3368_dfi_set_event(struct devfreq_event_dev *edev)
+{
+ return 0;
+}
+
+static int rk3368_dfi_get_event(struct devfreq_event_dev *edev,
+ struct devfreq_event_data *edata)
+{
+ struct rockchip_dfi *info = devfreq_event_get_drvdata(edev);
+ unsigned long flags;
+ u32 dfi0_wr, dfi0_rd, dfi1_wr, dfi1_rd, dfi_timer;
+
+ local_irq_save(flags);
+
+ rk3368_dfi_stop_hardware_counter(edev);
+
+ regmap_read(info->regmap_grf, RK3368_GRF_SOC_STATUS5, &dfi0_wr);
+ regmap_read(info->regmap_grf, RK3368_GRF_SOC_STATUS6, &dfi0_rd);
+ regmap_read(info->regmap_grf, RK3368_GRF_SOC_STATUS9, &dfi1_wr);
+ regmap_read(info->regmap_grf, RK3368_GRF_SOC_STATUS10, &dfi1_rd);
+ regmap_read(info->regmap_grf, RK3368_GRF_SOC_STATUS8, &dfi_timer);
+
+ edata->load_count = (dfi0_wr + dfi0_rd + dfi1_wr + dfi1_rd) * 2;
+ edata->total_count = dfi_timer;
+
+ rk3368_dfi_start_hardware_counter(edev);
+
+ local_irq_restore(flags);
+
+ return 0;
+}
+
+static const struct devfreq_event_ops rk3368_dfi_ops = {
+ .disable = rk3368_dfi_disable,
+ .enable = rk3368_dfi_enable,
+ .get_event = rk3368_dfi_get_event,
+ .set_event = rk3368_dfi_set_event,
};
static void rockchip_dfi_start_hardware_counter(struct devfreq_event_dev *edev)
{
struct rockchip_dfi *info = devfreq_event_get_drvdata(edev);
void __iomem *dfi_regs = info->regs;
- u32 val;
- u32 ddr_type;
-
- /* get ddr type */
- regmap_read(info->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)
- writel_relaxed(LPDDR3_EN, dfi_regs + DDRMON_CTRL);
- else if (ddr_type == RK3399_PMUGRF_DDRTYPE_LPDDR4)
+ if (info->dram_type == LPDDR3 || info->dram_type == LPDDR2)
+ writel_relaxed(LPDDR2_3_EN, dfi_regs + DDRMON_CTRL);
+ else if (info->dram_type == LPDDR4)
writel_relaxed(LPDDR4_EN, dfi_regs + DDRMON_CTRL);
+ else if (info->dram_type == DDR4)
+ writel_relaxed(DDR4_EN, dfi_regs + DDRMON_CTRL);
/* enable count, use software mode */
writel_relaxed(SOFTWARE_EN, dfi_regs + DDRMON_CTRL);
@@ -100,12 +371,22 @@ static int rockchip_dfi_get_busier_ch(struct devfreq_event_dev *edev)
rockchip_dfi_stop_hardware_counter(edev);
/* Find out which channel is busier */
- for (i = 0; i < RK3399_DMC_NUM_CH; i++) {
- info->ch_usage[i].access = readl_relaxed(dfi_regs +
- DDRMON_CH0_DFI_ACCESS_NUM + i * 20) * 4;
+ for (i = 0; i < MAX_DMC_NUM_CH; i++) {
+ if (!(info->ch_msk & BIT(i)))
+ continue;
+
info->ch_usage[i].total = readl_relaxed(dfi_regs +
DDRMON_CH0_COUNT_NUM + i * 20);
- tmp = info->ch_usage[i].access;
+
+ /* LPDDR4 BL = 16,other DDR type BL = 8 */
+ tmp = readl_relaxed(dfi_regs +
+ DDRMON_CH0_DFI_ACCESS_NUM + i * 20);
+ if (info->dram_type == LPDDR4)
+ tmp *= 8;
+ else
+ tmp *= 4;
+ info->ch_usage[i].access = tmp;
+
if (tmp > max) {
busier_ch = i;
max = tmp;
@@ -118,10 +399,14 @@ static int rockchip_dfi_get_busier_ch(struct devfreq_event_dev *edev)
static int rockchip_dfi_disable(struct devfreq_event_dev *edev)
{
+ struct device *dev = &edev->dev;
struct rockchip_dfi *info = devfreq_event_get_drvdata(edev);
rockchip_dfi_stop_hardware_counter(edev);
- clk_disable_unprepare(info->clk);
+ if (info->clk)
+ clk_disable_unprepare(info->clk);
+
+ dev_notice(dev,"Rockchip DFI interface disabled\n");
return 0;
}
@@ -129,20 +414,28 @@ static int rockchip_dfi_disable(struct devfreq_event_dev *edev)
static int rockchip_dfi_enable(struct devfreq_event_dev *edev)
{
struct rockchip_dfi *info = devfreq_event_get_drvdata(edev);
+ struct device *dev = &edev->dev;
int ret;
- ret = clk_prepare_enable(info->clk);
- if (ret) {
- dev_err(&edev->dev, "failed to enable dfi clk: %d\n", ret);
- return ret;
+ if (info->clk) {
+ ret = clk_prepare_enable(info->clk);
+ if (ret) {
+ dev_err(&edev->dev, "failed to enable dfi clk: %d\n",
+ ret);
+ return ret;
+ }
}
rockchip_dfi_start_hardware_counter(edev);
+
+ dev_notice(dev,"Rockchip DFI interface enabled\n");
+
return 0;
}
static int rockchip_dfi_set_event(struct devfreq_event_dev *edev)
{
+
return 0;
}
@@ -151,8 +444,11 @@ static int rockchip_dfi_get_event(struct devfreq_event_dev *edev,
{
struct rockchip_dfi *info = devfreq_event_get_drvdata(edev);
int busier_ch;
+ unsigned long flags;
+ local_irq_save(flags);
busier_ch = rockchip_dfi_get_busier_ch(edev);
+ local_irq_restore(flags);
edata->load_count = info->ch_usage[busier_ch].access;
edata->total_count = info->ch_usage[busier_ch].total;
@@ -167,22 +463,151 @@ static const struct devfreq_event_ops rockchip_dfi_ops = {
.set_event = rockchip_dfi_set_event,
};
-static const struct of_device_id rockchip_dfi_id_match[] = {
- { .compatible = "rockchip,rk3399-dfi" },
- { },
-};
-MODULE_DEVICE_TABLE(of, rockchip_dfi_id_match);
+static __init int px30_dfi_init(struct platform_device *pdev,
+ struct rockchip_dfi *data,
+ struct devfreq_event_desc *desc)
+{
+ struct device_node *np = pdev->dev.of_node, *node;
+ struct resource *res;
+ u32 val;
-static int rockchip_dfi_probe(struct platform_device *pdev)
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ data->regs = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(data->regs))
+ return PTR_ERR(data->regs);
+
+ node = of_parse_phandle(np, "rockchip,pmugrf", 0);
+ if (node) {
+ data->regmap_pmugrf = syscon_node_to_regmap(node);
+ if (IS_ERR(data->regmap_pmugrf))
+ return PTR_ERR(data->regmap_pmugrf);
+ }
+
+ regmap_read(data->regmap_pmugrf, PX30_PMUGRF_OS_REG2, &val);
+ data->dram_type = READ_DRAMTYPE_INFO(val);
+ data->ch_msk = 1;
+ data->clk = NULL;
+
+ desc->ops = &rockchip_dfi_ops;
+
+ return 0;
+}
+
+static __init int rk3128_dfi_init(struct platform_device *pdev,
+ struct rockchip_dfi *data,
+ struct devfreq_event_desc *desc)
+{
+ struct device_node *np = pdev->dev.of_node, *node;
+
+ node = of_parse_phandle(np, "rockchip,grf", 0);
+ if (node) {
+ data->regmap_grf = syscon_node_to_regmap(node);
+ if (IS_ERR(data->regmap_grf))
+ return PTR_ERR(data->regmap_grf);
+ }
+
+ desc->ops = &rk3128_dfi_ops;
+
+ return 0;
+}
+
+static __init int rk3228_dfi_init(struct platform_device *pdev,
+ struct rockchip_dfi *data,
+ struct devfreq_event_desc *desc)
{
+ struct device_node *np = pdev->dev.of_node, *node;
+ struct resource *res;
struct device *dev = &pdev->dev;
- struct rockchip_dfi *data;
- struct devfreq_event_desc *desc;
+ u32 val;
+
+ dev_notice(dev,"rk3228_dfi_init enter\n");
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ data->regs = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(data->regs))
+ return PTR_ERR(data->regs);
+
+ node = of_parse_phandle(np, "rockchip,grf", 0);
+ if (node) {
+ data->regmap_grf = syscon_node_to_regmap(node);
+ if (IS_ERR(data->regmap_grf))
+ return PTR_ERR(data->regmap_grf);
+ }
+
+ regmap_read(data->regmap_grf, RK3228_GRF_OS_REG2, &val);
+ data->dram_type = READ_DRAMTYPE_INFO(val);
+ data->ch_msk = 1;
+ data->clk = NULL;
+
+ desc->ops = &rockchip_dfi_ops;
+
+ dev_notice(dev,"rk3228-dfi initialized, dram type: 0x%x, channels: %d\n", data->dram_type, data->ch_msk);
+
+ return 0;
+}
+
+static __init int rk3288_dfi_init(struct platform_device *pdev,
+ struct rockchip_dfi *data,
+ struct devfreq_event_desc *desc)
+{
struct device_node *np = pdev->dev.of_node, *node;
+ u32 val;
- data = devm_kzalloc(dev, sizeof(struct rockchip_dfi), GFP_KERNEL);
- if (!data)
- return -ENOMEM;
+ node = of_parse_phandle(np, "rockchip,pmu", 0);
+ if (node) {
+ data->regmap_pmu = syscon_node_to_regmap(node);
+ if (IS_ERR(data->regmap_pmu))
+ return PTR_ERR(data->regmap_pmu);
+ }
+
+ node = of_parse_phandle(np, "rockchip,grf", 0);
+ if (node) {
+ data->regmap_grf = syscon_node_to_regmap(node);
+ if (IS_ERR(data->regmap_grf))
+ return PTR_ERR(data->regmap_grf);
+ }
+
+ regmap_read(data->regmap_pmu, RK3288_PMU_SYS_REG2, &val);
+ data->dram_type = READ_DRAMTYPE_INFO(val);
+ data->ch_msk = READ_CH_INFO(val);
+
+ if (data->dram_type == DDR3)
+ regmap_write(data->regmap_grf, RK3288_GRF_SOC_CON4,
+ RK3288_DDR3_SEL);
+ else
+ regmap_write(data->regmap_grf, RK3288_GRF_SOC_CON4,
+ RK3288_LPDDR_SEL);
+
+ desc->ops = &rk3288_dfi_ops;
+
+ return 0;
+}
+
+static __init int rk3368_dfi_init(struct platform_device *pdev,
+ struct rockchip_dfi *data,
+ struct devfreq_event_desc *desc)
+{
+ struct device *dev = &pdev->dev;
+
+ if (!dev->parent || !dev->parent->of_node)
+ return -EINVAL;
+
+ data->regmap_grf = syscon_node_to_regmap(dev->parent->of_node);
+ if (IS_ERR(data->regmap_grf))
+ return PTR_ERR(data->regmap_grf);
+
+ desc->ops = &rk3368_dfi_ops;
+
+ return 0;
+}
+
+static __init int rockchip_dfi_init(struct platform_device *pdev,
+ struct rockchip_dfi *data,
+ struct devfreq_event_desc *desc)
+{
+ struct device *dev = &pdev->dev;
+ struct device_node *np = pdev->dev.of_node, *node;
+ u32 val;
data->regs = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(data->regs))
@@ -202,21 +627,98 @@ static int rockchip_dfi_probe(struct platform_device *pdev)
if (IS_ERR(data->regmap_pmu))
return PTR_ERR(data->regmap_pmu);
}
- data->dev = dev;
+
+ regmap_read(data->regmap_pmu, PMUGRF_OS_REG2, &val);
+ data->dram_type = READ_DRAMTYPE_INFO(val);
+ data->ch_msk = READ_CH_INFO(val);
+
+ desc->ops = &rockchip_dfi_ops;
+
+ return 0;
+}
+
+static __init int rk3328_dfi_init(struct platform_device *pdev,
+ struct rockchip_dfi *data,
+ struct devfreq_event_desc *desc)
+{
+ struct device_node *np = pdev->dev.of_node, *node;
+ struct resource *res;
+ u32 val;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ data->regs = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(data->regs))
+ return PTR_ERR(data->regs);
+
+ node = of_parse_phandle(np, "rockchip,grf", 0);
+ if (node) {
+ data->regmap_grf = syscon_node_to_regmap(node);
+ if (IS_ERR(data->regmap_grf))
+ return PTR_ERR(data->regmap_grf);
+ }
+
+ regmap_read(data->regmap_grf, RK3328_GRF_OS_REG2, &val);
+ data->dram_type = READ_DRAMTYPE_INFO(val);
+ data->ch_msk = 1;
+ data->clk = NULL;
+
+ desc->ops = &rockchip_dfi_ops;
+
+ return 0;
+}
+
+static const struct of_device_id rockchip_dfi_id_match[] = {
+ { .compatible = "rockchip,px30-dfi", .data = px30_dfi_init },
+ { .compatible = "rockchip,rk1808-dfi", .data = px30_dfi_init },
+ { .compatible = "rockchip,rk3128-dfi", .data = rk3128_dfi_init },
+ { .compatible = "rockchip,rk3228-dfi", .data = rk3228_dfi_init },
+ { .compatible = "rockchip,rk3288-dfi", .data = rk3288_dfi_init },
+ { .compatible = "rockchip,rk3328-dfi", .data = rk3328_dfi_init },
+ { .compatible = "rockchip,rk3368-dfi", .data = rk3368_dfi_init },
+ { .compatible = "rockchip,rk3399-dfi", .data = rockchip_dfi_init },
+ { },
+};
+MODULE_DEVICE_TABLE(of, rockchip_dfi_id_match);
+
+static int rockchip_dfi_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct rockchip_dfi *data;
+ struct devfreq_event_desc *desc;
+ struct device_node *np = pdev->dev.of_node;
+ const struct of_device_id *match;
+ int (*init)(struct platform_device *pdev, struct rockchip_dfi *data,
+ struct devfreq_event_desc *desc);
+
+ data = devm_kzalloc(dev, sizeof(struct rockchip_dfi), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL);
if (!desc)
return -ENOMEM;
- desc->ops = &rockchip_dfi_ops;
+ match = of_match_node(rockchip_dfi_id_match, pdev->dev.of_node);
+ if (match) {
+ init = match->data;
+ if (init) {
+ if (init(pdev, data, desc))
+ return -EINVAL;
+ } else {
+ return 0;
+ }
+ } else {
+ return 0;
+ }
+
desc->driver_data = data;
desc->name = np->name;
data->desc = desc;
+ data->dev = dev;
- data->edev = devm_devfreq_event_add_edev(&pdev->dev, desc);
+ data->edev = devm_devfreq_event_add_edev(dev, desc);
if (IS_ERR(data->edev)) {
- dev_err(&pdev->dev,
- "failed to add devfreq-event device\n");
+ dev_err(dev, "failed to add devfreq-event device\n");
return PTR_ERR(data->edev);
}
--
2.25.1
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