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Message-ID: <51C866CB.5030004@ti.com>
Date: Mon, 24 Jun 2013 11:33:31 -0400
From: Eduardo Valentin <eduardo.valentin@...com>
To: Amit Daniel Kachhap <amit.daniel@...sung.com>
CC: <linux-pm@...r.kernel.org>, Zhang Rui <rui.zhang@...el.com>,
Eduardo Valentin <eduardo.valentin@...com>,
<linux-samsung-soc@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, <amit.kachhap@...il.com>,
Kukjin Kim <kgene.kim@...sung.com>
Subject: Re: [PATCH V7 09/30] thermal: exynos: Add extra entries in the tmu
platform data
On 24-06-2013 06:50, Amit Daniel Kachhap wrote:
> This patch adds entries min_efuse_value, max_efuse_value, default_temp_offset,
> trigger_type, cal_type, trim_first_point, trim_second_point, max_trigger_level
> trigger_enable in the TMU platform data structure. Also the driver is modified
> to use the data passed by these new platform memebers instead of the constant
> macros. All these changes helps in separating the SOC specific data part from
> the TMU driver.
>
> Acked-by: Kukjin Kim <kgene.kim@...sung.com>
> Acked-by: Jonghwa Lee <jonghwa3.lee@...sung.com>
> Signed-off-by: Amit Daniel Kachhap <amit.daniel@...sung.com>
Acked-by: Eduardo Valentin <eduardo.valentin@...com>
> ---
> drivers/thermal/samsung/exynos_thermal_common.h | 7 +++
> drivers/thermal/samsung/exynos_tmu.c | 43 ++++++++++----------
> drivers/thermal/samsung/exynos_tmu.h | 49 ++++++++++++++--------
> drivers/thermal/samsung/exynos_tmu_data.c | 34 ++++++++++++----
> 4 files changed, 85 insertions(+), 48 deletions(-)
>
> diff --git a/drivers/thermal/samsung/exynos_thermal_common.h b/drivers/thermal/samsung/exynos_thermal_common.h
> index 57ce33b..fee1588 100644
> --- a/drivers/thermal/samsung/exynos_thermal_common.h
> +++ b/drivers/thermal/samsung/exynos_thermal_common.h
> @@ -44,6 +44,13 @@
>
> #define EXYNOS_ZONE_COUNT 3
>
> +enum trigger_type {
> + THROTTLE_ACTIVE = 1,
> + THROTTLE_PASSIVE,
> + SW_TRIP,
> + HW_TRIP,
> +};
> +
> /**
> * struct freq_clip_table
> * @freq_clip_max: maximum frequency allowed for this cooling state.
> diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c
> index fa33a48..401ec98 100644
> --- a/drivers/thermal/samsung/exynos_tmu.c
> +++ b/drivers/thermal/samsung/exynos_tmu.c
> @@ -49,7 +49,6 @@
> #define EXYNOS_TMU_BUF_SLOPE_SEL_MASK 0xf
> #define EXYNOS_TMU_BUF_SLOPE_SEL_SHIFT 8
> #define EXYNOS_TMU_CORE_EN_SHIFT 0
> -#define EXYNOS_TMU_DEF_CODE_TO_TEMP_OFFSET 50
>
> /* Exynos4210 specific registers */
> #define EXYNOS4210_TMU_REG_THRESHOLD_TEMP 0x44
> @@ -94,9 +93,6 @@
> #define EXYNOS_TMU_INTEN_FALL1_SHIFT 20
> #define EXYNOS_TMU_INTEN_FALL2_SHIFT 24
>
> -#define EFUSE_MIN_VALUE 40
> -#define EFUSE_MAX_VALUE 100
> -
> #ifdef CONFIG_THERMAL_EMULATION
> #define EXYNOS_EMUL_TIME 0x57F0
> #define EXYNOS_EMUL_TIME_MASK 0xffff
> @@ -136,15 +132,16 @@ static int temp_to_code(struct exynos_tmu_data *data, u8 temp)
>
> switch (pdata->cal_type) {
> case TYPE_TWO_POINT_TRIMMING:
> - temp_code = (temp - 25) *
> - (data->temp_error2 - data->temp_error1) /
> - (85 - 25) + data->temp_error1;
> + temp_code = (temp - pdata->first_point_trim) *
> + (data->temp_error2 - data->temp_error1) /
> + (pdata->second_point_trim - pdata->first_point_trim) +
> + data->temp_error1;
> break;
> case TYPE_ONE_POINT_TRIMMING:
> - temp_code = temp + data->temp_error1 - 25;
> + temp_code = temp + data->temp_error1 - pdata->first_point_trim;
> break;
> default:
> - temp_code = temp + EXYNOS_TMU_DEF_CODE_TO_TEMP_OFFSET;
> + temp_code = temp + pdata->default_temp_offset;
> break;
> }
> out:
> @@ -169,14 +166,16 @@ static int code_to_temp(struct exynos_tmu_data *data, u8 temp_code)
>
> switch (pdata->cal_type) {
> case TYPE_TWO_POINT_TRIMMING:
> - temp = (temp_code - data->temp_error1) * (85 - 25) /
> - (data->temp_error2 - data->temp_error1) + 25;
> + temp = (temp_code - data->temp_error1) *
> + (pdata->second_point_trim - pdata->first_point_trim) /
> + (data->temp_error2 - data->temp_error1) +
> + pdata->first_point_trim;
> break;
> case TYPE_ONE_POINT_TRIMMING:
> - temp = temp_code - data->temp_error1 + 25;
> + temp = temp_code - data->temp_error1 + pdata->first_point_trim;
> break;
> default:
> - temp = temp_code - EXYNOS_TMU_DEF_CODE_TO_TEMP_OFFSET;
> + temp = temp_code - pdata->default_temp_offset;
> break;
> }
> out:
> @@ -209,8 +208,8 @@ static int exynos_tmu_initialize(struct platform_device *pdev)
> data->temp_error1 = trim_info & EXYNOS_TMU_TRIM_TEMP_MASK;
> data->temp_error2 = ((trim_info >> 8) & EXYNOS_TMU_TRIM_TEMP_MASK);
>
> - if ((EFUSE_MIN_VALUE > data->temp_error1) ||
> - (data->temp_error1 > EFUSE_MAX_VALUE) ||
> + if ((pdata->min_efuse_value > data->temp_error1) ||
> + (data->temp_error1 > pdata->max_efuse_value) ||
> (data->temp_error2 != 0))
> data->temp_error1 = pdata->efuse_value;
>
> @@ -300,10 +299,10 @@ static void exynos_tmu_control(struct platform_device *pdev, bool on)
> if (on) {
> con |= (1 << EXYNOS_TMU_CORE_EN_SHIFT);
> interrupt_en =
> - pdata->trigger_level3_en << EXYNOS_TMU_INTEN_RISE3_SHIFT |
> - pdata->trigger_level2_en << EXYNOS_TMU_INTEN_RISE2_SHIFT |
> - pdata->trigger_level1_en << EXYNOS_TMU_INTEN_RISE1_SHIFT |
> - pdata->trigger_level0_en << EXYNOS_TMU_INTEN_RISE0_SHIFT;
> + pdata->trigger_enable[3] << EXYNOS_TMU_INTEN_RISE3_SHIFT |
> + pdata->trigger_enable[2] << EXYNOS_TMU_INTEN_RISE2_SHIFT |
> + pdata->trigger_enable[1] << EXYNOS_TMU_INTEN_RISE1_SHIFT |
> + pdata->trigger_enable[0] << EXYNOS_TMU_INTEN_RISE0_SHIFT;
> if (pdata->threshold_falling)
> interrupt_en |=
> interrupt_en << EXYNOS_TMU_INTEN_FALL0_SHIFT;
> @@ -533,9 +532,9 @@ static int exynos_tmu_probe(struct platform_device *pdev)
>
> /* Register the sensor with thermal management interface */
> (&exynos_sensor_conf)->private_data = data;
> - exynos_sensor_conf.trip_data.trip_count = pdata->trigger_level0_en +
> - pdata->trigger_level1_en + pdata->trigger_level2_en +
> - pdata->trigger_level3_en;
> + exynos_sensor_conf.trip_data.trip_count = pdata->trigger_enable[0] +
> + pdata->trigger_enable[1] + pdata->trigger_enable[2]+
> + pdata->trigger_enable[3];
>
> for (i = 0; i < exynos_sensor_conf.trip_data.trip_count; i++)
> exynos_sensor_conf.trip_data.trip_val[i] =
> diff --git a/drivers/thermal/samsung/exynos_tmu.h b/drivers/thermal/samsung/exynos_tmu.h
> index 1857609..473acae 100644
> --- a/drivers/thermal/samsung/exynos_tmu.h
> +++ b/drivers/thermal/samsung/exynos_tmu.h
> @@ -32,6 +32,11 @@ enum calibration_type {
> TYPE_NONE,
> };
>
> +enum calibration_mode {
> + SW_MODE,
> + HW_MODE,
> +};
> +
> enum soc_type {
> SOC_ARCH_EXYNOS4210 = 1,
> SOC_ARCH_EXYNOS,
> @@ -57,18 +62,15 @@ enum soc_type {
> * 3: temperature for trigger_level3 interrupt
> * condition for trigger_level3 interrupt:
> * current temperature > threshold + trigger_levels[3]
> - * @trigger_level0_en:
> - * 1 = enable trigger_level0 interrupt,
> - * 0 = disable trigger_level0 interrupt
> - * @trigger_level1_en:
> - * 1 = enable trigger_level1 interrupt,
> - * 0 = disable trigger_level1 interrupt
> - * @trigger_level2_en:
> - * 1 = enable trigger_level2 interrupt,
> - * 0 = disable trigger_level2 interrupt
> - * @trigger_level3_en:
> - * 1 = enable trigger_level3 interrupt,
> - * 0 = disable trigger_level3 interrupt
> + * @trigger_type: defines the type of trigger. Possible values are,
> + * THROTTLE_ACTIVE trigger type
> + * THROTTLE_PASSIVE trigger type
> + * SW_TRIP trigger type
> + * HW_TRIP
> + * @trigger_enable[]: array to denote which trigger levels are enabled.
> + * 1 = enable trigger_level[] interrupt,
> + * 0 = disable trigger_level[] interrupt
> + * @max_trigger_level: max trigger level supported by the TMU
> * @gain: gain of amplifier in the positive-TC generator block
> * 0 <= gain <= 15
> * @reference_voltage: reference voltage of amplifier
> @@ -78,7 +80,13 @@ enum soc_type {
> * 000, 100, 101, 110 and 111 can be different modes
> * @type: determines the type of SOC
> * @efuse_value: platform defined fuse value
> + * @min_efuse_value: minimum valid trimming data
> + * @max_efuse_value: maximum valid trimming data
> + * @first_point_trim: temp value of the first point trimming
> + * @second_point_trim: temp value of the second point trimming
> + * @default_temp_offset: default temperature offset in case of no trimming
> * @cal_type: calibration type for temperature
> + * @cal_mode: calibration mode for temperature
> * @freq_clip_table: Table representing frequency reduction percentage.
> * @freq_tab_count: Count of the above table as frequency reduction may
> * applicable to only some of the trigger levels.
> @@ -88,18 +96,23 @@ enum soc_type {
> struct exynos_tmu_platform_data {
> u8 threshold;
> u8 threshold_falling;
> - u8 trigger_levels[4];
> - bool trigger_level0_en;
> - bool trigger_level1_en;
> - bool trigger_level2_en;
> - bool trigger_level3_en;
> -
> + u8 trigger_levels[MAX_TRIP_COUNT];
> + enum trigger_type trigger_type[MAX_TRIP_COUNT];
> + bool trigger_enable[MAX_TRIP_COUNT];
> + u8 max_trigger_level;
> u8 gain;
> u8 reference_voltage;
> u8 noise_cancel_mode;
> +
> u32 efuse_value;
> + u32 min_efuse_value;
> + u32 max_efuse_value;
> + u8 first_point_trim;
> + u8 second_point_trim;
> + u8 default_temp_offset;
>
> enum calibration_type cal_type;
> + enum calibration_mode cal_mode;
> enum soc_type type;
> struct freq_clip_table freq_tab[4];
> unsigned int freq_tab_count;
> diff --git a/drivers/thermal/samsung/exynos_tmu_data.c b/drivers/thermal/samsung/exynos_tmu_data.c
> index 144ba44..24934d7 100644
> --- a/drivers/thermal/samsung/exynos_tmu_data.c
> +++ b/drivers/thermal/samsung/exynos_tmu_data.c
> @@ -30,13 +30,22 @@ struct exynos_tmu_platform_data const exynos4210_default_tmu_data = {
> .trigger_levels[0] = 5,
> .trigger_levels[1] = 20,
> .trigger_levels[2] = 30,
> - .trigger_level0_en = 1,
> - .trigger_level1_en = 1,
> - .trigger_level2_en = 1,
> - .trigger_level3_en = 0,
> + .trigger_enable[0] = true,
> + .trigger_enable[1] = true,
> + .trigger_enable[2] = true,
> + .trigger_enable[3] = false,
> + .trigger_type[0] = THROTTLE_ACTIVE,
> + .trigger_type[1] = THROTTLE_ACTIVE,
> + .trigger_type[2] = SW_TRIP,
> + .max_trigger_level = 4,
> .gain = 15,
> .reference_voltage = 7,
> .cal_type = TYPE_ONE_POINT_TRIMMING,
> + .min_efuse_value = 40,
> + .max_efuse_value = 100,
> + .first_point_trim = 25,
> + .second_point_trim = 85,
> + .default_temp_offset = 50,
> .freq_tab[0] = {
> .freq_clip_max = 800 * 1000,
> .temp_level = 85,
> @@ -56,15 +65,24 @@ struct exynos_tmu_platform_data const exynos5250_default_tmu_data = {
> .trigger_levels[0] = 85,
> .trigger_levels[1] = 103,
> .trigger_levels[2] = 110,
> - .trigger_level0_en = 1,
> - .trigger_level1_en = 1,
> - .trigger_level2_en = 1,
> - .trigger_level3_en = 0,
> + .trigger_enable[0] = true,
> + .trigger_enable[1] = true,
> + .trigger_enable[2] = true,
> + .trigger_enable[3] = false,
> + .trigger_type[0] = THROTTLE_ACTIVE,
> + .trigger_type[1] = THROTTLE_ACTIVE,
> + .trigger_type[2] = SW_TRIP,
> + .max_trigger_level = 4,
> .gain = 8,
> .reference_voltage = 16,
> .noise_cancel_mode = 4,
> .cal_type = TYPE_ONE_POINT_TRIMMING,
> .efuse_value = 55,
> + .min_efuse_value = 40,
> + .max_efuse_value = 100,
> + .first_point_trim = 25,
> + .second_point_trim = 85,
> + .default_temp_offset = 50,
> .freq_tab[0] = {
> .freq_clip_max = 800 * 1000,
> .temp_level = 85,
>
--
You have got to be excited about what you are doing. (L. Lamport)
Eduardo Valentin
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