From mboxrd@z Thu Jan 1 00:00:00 1970 From: Amit Daniel Kachhap Subject: [PATCH V5 26/30] thermal: exynos: Add hardware mode thermal calibration support Date: Tue, 11 Jun 2013 18:23:36 +0530 Message-ID: <1370955220-2949-27-git-send-email-amit.daniel@samsung.com> References: <1370955220-2949-1-git-send-email-amit.daniel@samsung.com> Return-path: In-Reply-To: <1370955220-2949-1-git-send-email-amit.daniel@samsung.com> Sender: linux-kernel-owner@vger.kernel.org To: linux-pm@vger.kernel.org, Zhang Rui , Eduardo Valentin Cc: linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, amit.kachhap@gmail.com, Kukjin Kim , jonghwa3.lee@samsung.com List-Id: linux-pm@vger.kernel.org This patch adds support for h/w mode calibration in the TMU controller. soc's like 5440 support this features. Acked-by: Kukjin Kim Signed-off-by: Amit Daniel Kachhap --- drivers/thermal/samsung/exynos_tmu.c | 15 +++++++++++++++ drivers/thermal/samsung/exynos_tmu.h | 6 ++++++ drivers/thermal/samsung/exynos_tmu_data.c | 2 ++ drivers/thermal/samsung/exynos_tmu_data.h | 2 ++ 4 files changed, 25 insertions(+), 0 deletions(-) diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c index af0e6ca..7a259f4 100644 --- a/drivers/thermal/samsung/exynos_tmu.c +++ b/drivers/thermal/samsung/exynos_tmu.c @@ -73,6 +73,9 @@ static int temp_to_code(struct exynos_tmu_data *data, u8 temp) struct exynos_tmu_platform_data *pdata = data->pdata; int temp_code; + if (pdata->cal_mode == HW_MODE) + return temp; + if (data->soc == SOC_ARCH_EXYNOS4210) /* temp should range between 25 and 125 */ if (temp < 25 || temp > 125) { @@ -107,6 +110,9 @@ static int code_to_temp(struct exynos_tmu_data *data, u8 temp_code) struct exynos_tmu_platform_data *pdata = data->pdata; int temp; + if (pdata->cal_mode == HW_MODE) + return temp_code; + if (data->soc == SOC_ARCH_EXYNOS4210) /* temp_code should range between 75 and 175 */ if (temp_code < 75 || temp_code > 175) { @@ -155,6 +161,9 @@ static int exynos_tmu_initialize(struct platform_device *pdev) if (TMU_SUPPORTS(pdata, TRIM_RELOAD)) __raw_writel(1, data->base + reg->triminfo_ctrl); + if (pdata->cal_mode == HW_MODE) + goto skip_calib_data; + /* Save trimming info in order to perform calibration */ if (data->soc == SOC_ARCH_EXYNOS5440) { /* @@ -190,6 +199,7 @@ static int exynos_tmu_initialize(struct platform_device *pdev) (pdata->efuse_value >> reg->triminfo_85_shift) & EXYNOS_TMU_TEMP_MASK; +skip_calib_data: if (pdata->max_trigger_level > MAX_THRESHOLD_LEVS) { dev_err(&pdev->dev, "Invalid max trigger level\n"); goto out; @@ -319,6 +329,11 @@ static void exynos_tmu_control(struct platform_device *pdev, bool on) con |= (pdata->noise_cancel_mode << reg->therm_trip_mode_shift); } + if (pdata->cal_mode == HW_MODE) { + con &= ~(reg->calib_mode_mask << reg->calib_mode_shift); + con |= pdata->cal_type << reg->calib_mode_shift; + } + if (on) { con |= (1 << reg->core_en_shift); interrupt_en = diff --git a/drivers/thermal/samsung/exynos_tmu.h b/drivers/thermal/samsung/exynos_tmu.h index 73aaed7..abfa1eb 100644 --- a/drivers/thermal/samsung/exynos_tmu.h +++ b/drivers/thermal/samsung/exynos_tmu.h @@ -88,6 +88,10 @@ enum soc_type { * @buf_slope_sel_shift: shift bits of amplifier gain value in tmu_ctrl register. * @buf_slope_sel_mask: mask bits of amplifier gain value in tmu_ctrl register. + * @calib_mode_shift: shift bits of calibration mode value in tmu_ctrl + register. + * @calib_mode_mask: mask bits of calibration mode value in tmu_ctrl + register. * @therm_trip_tq_en_shift: shift bits of thermal trip enable by TQ pin in tmu_ctrl register. * @core_en_shift: shift bits of TMU core enable bit in tmu_ctrl register. @@ -149,6 +153,8 @@ struct exynos_tmu_registers { u32 therm_trip_en_shift; u32 buf_slope_sel_shift; u32 buf_slope_sel_mask; + u32 calib_mode_shift; + u32 calib_mode_mask; u32 therm_trip_tq_en_shift; u32 core_en_shift; diff --git a/drivers/thermal/samsung/exynos_tmu_data.c b/drivers/thermal/samsung/exynos_tmu_data.c index b34e726..47c5d6b 100644 --- a/drivers/thermal/samsung/exynos_tmu_data.c +++ b/drivers/thermal/samsung/exynos_tmu_data.c @@ -189,6 +189,8 @@ static const struct exynos_tmu_registers exynos5440_tmu_registers = { .therm_trip_en_shift = EXYNOS_TMU_THERM_TRIP_EN_SHIFT, .buf_slope_sel_shift = EXYNOS_TMU_BUF_SLOPE_SEL_SHIFT, .buf_slope_sel_mask = EXYNOS_TMU_BUF_SLOPE_SEL_MASK, + .calib_mode_shift = EXYNOS_TMU_CALIB_MODE_SHIFT, + .calib_mode_mask = EXYNOS_TMU_CALIB_MODE_MASK, .core_en_shift = EXYNOS_TMU_CORE_EN_SHIFT, .tmu_status = EXYNOS5440_TMU_S0_7_STATUS, .tmu_cur_temp = EXYNOS5440_TMU_S0_7_TEMP, diff --git a/drivers/thermal/samsung/exynos_tmu_data.h b/drivers/thermal/samsung/exynos_tmu_data.h index 43ce5fb..dc7feb5 100644 --- a/drivers/thermal/samsung/exynos_tmu_data.h +++ b/drivers/thermal/samsung/exynos_tmu_data.h @@ -75,6 +75,8 @@ #define EXYNOS_TMU_TRIP_MODE_SHIFT 13 #define EXYNOS_TMU_TRIP_MODE_MASK 0x7 #define EXYNOS_TMU_THERM_TRIP_EN_SHIFT 12 +#define EXYNOS_TMU_CALIB_MODE_SHIFT 4 +#define EXYNOS_TMU_CALIB_MODE_MASK 0x3 #define EXYNOS_TMU_INTEN_RISE0_SHIFT 0 #define EXYNOS_TMU_INTEN_RISE1_SHIFT 4 -- 1.7.1