Re: [PATCH v2] thermal: exynos: Add the support for Exynos5433 TMU

From: Lukasz Majewski
Date: Wed Mar 18 2015 - 03:39:28 EST

Hi Chanwoo,

> Hi Lukasz,
>
> Genlty Ping.

I've got your patches at the back of my head :-)

I will try to review them today or tomorrow.

>
> Best Regards,
> Chanwoo Choi
>
> On 03/10/2015 11:23 AM, Chanwoo Choi wrote:
> > This patch adds the support for Exynos5433's TMU (Thermal
> > Management Unit). Exynos5433 has a little different register bit
> > fields as following description:
> > - Support the eight trip points for rising/falling interrupt by
> > using two registers
> > - Read the calibration type (1-point or 2-point) and sensor id from
> > TRIMINFO register
> > - Use a little different register address
> >
> > Cc: Zhang Rui <rui.zhang@xxxxxxxxx>
> > Cc: Eduardo Valentin <edubezval@xxxxxxxxx>
> > Cc: Lukasz Majewski <l.majewski@xxxxxxxxxxx>
> > Signed-off-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
> > ---
> > Changes from v1:
> > (https://lkml.org/lkml/2015/2/26/234)
> > - Add exynos5433_tmu_control() instead of using
> > exynos7_tmu_control() on both Exynos5433 and Exynos7.
> > - Separate the patches related to devicetree and then send send
> > Exnos5433's tmu patches[1] with other Exynos5433 devicetree patches.
> > [1] https://lkml.org/lkml/2015/3/9/1036
> >
> > drivers/thermal/samsung/exynos_tmu.c | 187
> > ++++++++++++++++++++++++++++++++++-
> > drivers/thermal/samsung/exynos_tmu.h | 1 + 2 files changed, 186
> > insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/thermal/samsung/exynos_tmu.c
> > b/drivers/thermal/samsung/exynos_tmu.c index 1d30b09..531f4b17
> > 100644 --- a/drivers/thermal/samsung/exynos_tmu.c
> > +++ b/drivers/thermal/samsung/exynos_tmu.c
> > @@ -97,6 +97,32 @@
> > #define EXYNOS4412_MUX_ADDR_VALUE 6
> > #define EXYNOS4412_MUX_ADDR_SHIFT 20
> >
> > +/* Exynos5433 specific registers */
> > +#define EXYNOS5433_TMU_REG_CONTROL1 0x024
> > +#define EXYNOS5433_TMU_SAMPLING_INTERVAL 0x02c
> > +#define EXYNOS5433_TMU_COUNTER_VALUE0 0x030
> > +#define EXYNOS5433_TMU_COUNTER_VALUE1 0x034
> > +#define EXYNOS5433_TMU_REG_CURRENT_TEMP1 0x044
> > +#define EXYNOS5433_THD_TEMP_RISE3_0 0x050
> > +#define EXYNOS5433_THD_TEMP_RISE7_4 0x054
> > +#define EXYNOS5433_THD_TEMP_FALL3_0 0x060
> > +#define EXYNOS5433_THD_TEMP_FALL7_4 0x064
> > +#define EXYNOS5433_TMU_REG_INTEN 0x0c0
> > +#define EXYNOS5433_TMU_REG_INTPEND 0x0c8
> > +#define EXYNOS5433_TMU_EMUL_CON 0x110
> > +#define EXYNOS5433_TMU_PD_DET_EN 0x130
> > +
> > +#define EXYNOS5433_TRIMINFO_SENSOR_ID_SHIFT 16
> > +#define EXYNOS5433_TRIMINFO_CALIB_SEL_SHIFT 23
> > +#define EXYNOS5433_TRIMINFO_SENSOR_ID_MASK \
> > + (0xf <<
> > EXYNOS5433_TRIMINFO_SENSOR_ID_SHIFT) +#define
> > EXYNOS5433_TRIMINFO_CALIB_SEL_MASK BIT(23) +
> > +#define EXYNOS5433_TRIMINFO_ONE_POINT_TRIMMING 0
> > +#define EXYNOS5433_TRIMINFO_TWO_POINT_TRIMMING 1
> > +
> > +#define EXYNOS5433_PD_DET_EN 1
> > +
> > /*exynos5440 specific registers*/
> > #define EXYNOS5440_TMU_S0_7_TRIM 0x000
> > #define EXYNOS5440_TMU_S0_7_CTRL 0x020
> > @@ -484,6 +510,101 @@ out:
> > return ret;
> > }
> >
> > +static int exynos5433_tmu_initialize(struct platform_device *pdev)
> > +{
> > + struct exynos_tmu_data *data = platform_get_drvdata(pdev);
> > + struct exynos_tmu_platform_data *pdata = data->pdata;
> > + struct thermal_zone_device *tz = data->tzd;
> > + unsigned int status, trim_info;
> > + unsigned int rising_threshold = 0, falling_threshold = 0;
> > + unsigned long temp, temp_hist;
> > + int ret = 0, threshold_code, i, sensor_id, cal_type;
> > +
> > + status = readb(data->base + EXYNOS_TMU_REG_STATUS);
> > + if (!status) {
> > + ret = -EBUSY;
> > + goto out;
> > + }
> > +
> > + trim_info = readl(data->base + EXYNOS_TMU_REG_TRIMINFO);
> > + sanitize_temp_error(data, trim_info);
> > +
> > + /* Read the temperature sensor id */
> > + sensor_id = (trim_info &
> > EXYNOS5433_TRIMINFO_SENSOR_ID_MASK)
> > + >>
> > EXYNOS5433_TRIMINFO_SENSOR_ID_SHIFT;
> > + dev_info(&pdev->dev, "Temperature sensor ID: 0x%x\n",
> > sensor_id); +
> > + /* Read the calibration mode */
> > + writel(trim_info, data->base + EXYNOS_TMU_REG_TRIMINFO);
> > + cal_type = (trim_info & EXYNOS5433_TRIMINFO_CALIB_SEL_MASK)
> > + >>
> > EXYNOS5433_TRIMINFO_CALIB_SEL_SHIFT; +
> > + switch (cal_type) {
> > + case EXYNOS5433_TRIMINFO_ONE_POINT_TRIMMING:
> > + pdata->cal_type = TYPE_ONE_POINT_TRIMMING;
> > + break;
> > + case EXYNOS5433_TRIMINFO_TWO_POINT_TRIMMING:
> > + pdata->cal_type = TYPE_TWO_POINT_TRIMMING;
> > + break;
> > + default:
> > + pdata->cal_type = TYPE_ONE_POINT_TRIMMING;
> > + break;
> > + };
> > +
> > + dev_info(&pdev->dev, "Calibration type is %d-point
> > calibration\n",
> > + cal_type ? 2 : 1);
> > +
> > + /* Write temperature code for rising and falling threshold
> > */
> > + for (i = 0; i < of_thermal_get_ntrips(tz); i++) {
> > + int rising_reg_offset, falling_reg_offset;
> > + int j = 0;
> > +
> > + switch (i) {
> > + case 0:
> > + case 1:
> > + case 2:
> > + case 3:
> > + rising_reg_offset =
> > EXYNOS5433_THD_TEMP_RISE3_0;
> > + falling_reg_offset =
> > EXYNOS5433_THD_TEMP_FALL3_0;
> > + j = i;
> > + break;
> > + case 4:
> > + case 5:
> > + case 6:
> > + case 7:
> > + rising_reg_offset =
> > EXYNOS5433_THD_TEMP_RISE7_4;
> > + falling_reg_offset =
> > EXYNOS5433_THD_TEMP_FALL7_4;
> > + j = i - 4;
> > + break;
> > + default:
> > + continue;
> > + }
> > +
> > + /* Write temperature code for rising threshold */
> > + tz->ops->get_trip_temp(tz, i, &temp);
> > + temp /= MCELSIUS;
> > + threshold_code = temp_to_code(data, temp);
> > +
> > + rising_threshold = readl(data->base +
> > rising_reg_offset);
> > + rising_threshold |= (threshold_code << j * 8);
> > + writel(rising_threshold, data->base +
> > rising_reg_offset); +
> > + /* Write temperature code for falling threshold */
> > + tz->ops->get_trip_hyst(tz, i, &temp_hist);
> > + temp_hist = temp - (temp_hist / MCELSIUS);
> > + threshold_code = temp_to_code(data, temp_hist);
> > +
> > + falling_threshold = readl(data->base +
> > falling_reg_offset);
> > + falling_threshold &= ~(0xff << j * 8);
> > + falling_threshold |= (threshold_code << j * 8);
> > + writel(falling_threshold, data->base +
> > falling_reg_offset);
> > + }
> > +
> > + data->tmu_clear_irqs(data);
> > +out:
> > + return ret;
> > +}
> > +
> > static int exynos5440_tmu_initialize(struct platform_device *pdev)
> > {
> > struct exynos_tmu_data *data = platform_get_drvdata(pdev);
> > @@ -643,6 +764,48 @@ static void exynos4210_tmu_control(struct
> > platform_device *pdev, bool on) writel(con, data->base +
> > EXYNOS_TMU_REG_CONTROL); }
> >
> > +static void exynos5433_tmu_control(struct platform_device *pdev,
> > bool on) +{
> > + struct exynos_tmu_data *data = platform_get_drvdata(pdev);
> > + struct thermal_zone_device *tz = data->tzd;
> > + unsigned int con, interrupt_en, pd_det_en;
> > +
> > + con = get_con_reg(data, readl(data->base +
> > EXYNOS_TMU_REG_CONTROL)); +
> > + if (on) {
> > + con |= (1 << EXYNOS_TMU_CORE_EN_SHIFT);
> > + interrupt_en =
> > + (of_thermal_is_trip_valid(tz, 7)
> > + << EXYNOS7_TMU_INTEN_RISE7_SHIFT) |
> > + (of_thermal_is_trip_valid(tz, 6)
> > + << EXYNOS7_TMU_INTEN_RISE6_SHIFT) |
> > + (of_thermal_is_trip_valid(tz, 5)
> > + << EXYNOS7_TMU_INTEN_RISE5_SHIFT) |
> > + (of_thermal_is_trip_valid(tz, 4)
> > + << EXYNOS7_TMU_INTEN_RISE4_SHIFT) |
> > + (of_thermal_is_trip_valid(tz, 3)
> > + << EXYNOS7_TMU_INTEN_RISE3_SHIFT) |
> > + (of_thermal_is_trip_valid(tz, 2)
> > + << EXYNOS7_TMU_INTEN_RISE2_SHIFT) |
> > + (of_thermal_is_trip_valid(tz, 1)
> > + << EXYNOS7_TMU_INTEN_RISE1_SHIFT) |
> > + (of_thermal_is_trip_valid(tz, 0)
> > + << EXYNOS7_TMU_INTEN_RISE0_SHIFT);
> > +
> > + interrupt_en |=
> > + interrupt_en <<
> > EXYNOS_TMU_INTEN_FALL0_SHIFT;
> > + } else {
> > + con &= ~(1 << EXYNOS_TMU_CORE_EN_SHIFT);
> > + interrupt_en = 0; /* Disable all interrupts */
> > + }
> > +
> > + pd_det_en = on ? EXYNOS5433_PD_DET_EN : 0;
> > +
> > + writel(pd_det_en, data->base + EXYNOS5433_TMU_PD_DET_EN);
> > + writel(interrupt_en, data->base +
> > EXYNOS5433_TMU_REG_INTEN);
> > + writel(con, data->base + EXYNOS_TMU_REG_CONTROL);
> > +}
> > +
> > static void exynos5440_tmu_control(struct platform_device *pdev,
> > bool on) {
> > struct exynos_tmu_data *data = platform_get_drvdata(pdev);
> > @@ -770,6 +933,8 @@ static void exynos4412_tmu_set_emulation(struct
> > exynos_tmu_data *data,
> > if (data->soc == SOC_ARCH_EXYNOS5260)
> > emul_con = EXYNOS5260_EMUL_CON;
> > + if (data->soc == SOC_ARCH_EXYNOS5433)
> > + emul_con = EXYNOS5433_TMU_EMUL_CON;
> > else if (data->soc == SOC_ARCH_EXYNOS7)
> > emul_con = EXYNOS7_TMU_REG_EMUL_CON;
> > else
> > @@ -882,6 +1047,9 @@ static void exynos4210_tmu_clear_irqs(struct
> > exynos_tmu_data *data) } else if (data->soc == SOC_ARCH_EXYNOS7) {
> > tmu_intstat = EXYNOS7_TMU_REG_INTPEND;
> > tmu_intclear = EXYNOS7_TMU_REG_INTPEND;
> > + } else if (data->soc == SOC_ARCH_EXYNOS5433) {
> > + tmu_intstat = EXYNOS5433_TMU_REG_INTPEND;
> > + tmu_intclear = EXYNOS5433_TMU_REG_INTPEND;
> > } else {
> > tmu_intstat = EXYNOS_TMU_REG_INTSTAT;
> > tmu_intclear = EXYNOS_TMU_REG_INTCLEAR;
> > @@ -926,6 +1094,7 @@ static const struct of_device_id
> > exynos_tmu_match[] = { { .compatible = "samsung,exynos5260-tmu", },
> > { .compatible = "samsung,exynos5420-tmu", },
> > { .compatible = "samsung,exynos5420-tmu-ext-triminfo", },
> > + { .compatible = "samsung,exynos5433-tmu", },
> > { .compatible = "samsung,exynos5440-tmu", },
> > { .compatible = "samsung,exynos7-tmu", },
> > { /* sentinel */ },
> > @@ -949,6 +1118,8 @@ static int exynos_of_get_soc_type(struct
> > device_node *np) else if (of_device_is_compatible(np,
> > "samsung,exynos5420-tmu-ext-triminfo"))
> > return SOC_ARCH_EXYNOS5420_TRIMINFO;
> > + else if (of_device_is_compatible(np,
> > "samsung,exynos5433-tmu"))
> > + return SOC_ARCH_EXYNOS5433;
> > else if (of_device_is_compatible(np,
> > "samsung,exynos5440-tmu")) return SOC_ARCH_EXYNOS5440;
> > else if (of_device_is_compatible(np,
> > "samsung,exynos7-tmu")) @@ -1069,6 +1240,13 @@ static int
> > exynos_map_dt_data(struct platform_device *pdev)
> > data->tmu_set_emulation = exynos4412_tmu_set_emulation;
> > data->tmu_clear_irqs = exynos4210_tmu_clear_irqs; break;
> > + case SOC_ARCH_EXYNOS5433:
> > + data->tmu_initialize = exynos5433_tmu_initialize;
> > + data->tmu_control = exynos5433_tmu_control;
> > + data->tmu_read = exynos4412_tmu_read;
> > + data->tmu_set_emulation =
> > exynos4412_tmu_set_emulation;
> > + data->tmu_clear_irqs = exynos4210_tmu_clear_irqs;
> > + break;
> > case SOC_ARCH_EXYNOS5440:
> > data->tmu_initialize = exynos5440_tmu_initialize;
> > data->tmu_control = exynos5440_tmu_control;
> > @@ -1172,7 +1350,9 @@ static int exynos_tmu_probe(struct
> > platform_device *pdev) goto err_clk_sec;
> > }
> >
> > - if (data->soc == SOC_ARCH_EXYNOS7) {
> > + switch (data->soc) {
> > + case SOC_ARCH_EXYNOS5433:
> > + case SOC_ARCH_EXYNOS7:
> > data->sclk = devm_clk_get(&pdev->dev, "tmu_sclk");
> > if (IS_ERR(data->sclk)) {
> > dev_err(&pdev->dev, "Failed to get
> > sclk\n"); @@ -1184,7 +1364,10 @@ static int exynos_tmu_probe(struct
> > platform_device *pdev) goto err_clk;
> > }
> > }
> > - }
> > + break;
> > + default:
> > + break;
> > + };
> >
> > ret = exynos_tmu_initialize(pdev);
> > if (ret) {
> > diff --git a/drivers/thermal/samsung/exynos_tmu.h
> > b/drivers/thermal/samsung/exynos_tmu.h index 4d71ec6..440c714 100644
> > --- a/drivers/thermal/samsung/exynos_tmu.h
> > +++ b/drivers/thermal/samsung/exynos_tmu.h
> > @@ -33,6 +33,7 @@ enum soc_type {
> > SOC_ARCH_EXYNOS5260,
> > SOC_ARCH_EXYNOS5420,
> > SOC_ARCH_EXYNOS5420_TRIMINFO,
> > + SOC_ARCH_EXYNOS5433,
> > SOC_ARCH_EXYNOS5440,
> > SOC_ARCH_EXYNOS7,
> > };
> >
>



--
Best regards,

Lukasz Majewski

Samsung R&D Institute Poland (SRPOL) | Linux Platform Group
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