From: Amit Daniel Kachhap <amit.daniel@samsung.com>
To: linux-pm@vger.kernel.org, Zhang Rui <rui.zhang@intel.com>,
Eduardo Valentin <eduardo.valentin@ti.com>
Cc: linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org,
amit.kachhap@gmail.com, Kukjin Kim <kgene.kim@samsung.com>
Subject: [PATCH V7 22/30] thermal: exynos: Add driver support for exynos5440 TMU sensor
Date: Mon, 24 Jun 2013 16:20:43 +0530 [thread overview]
Message-ID: <1372071051-3167-23-git-send-email-amit.daniel@samsung.com> (raw)
In-Reply-To: <1372071051-3167-1-git-send-email-amit.daniel@samsung.com>
This patch modifies TMU controller to add changes needed to work with
exynos5440 platform. This sensor registers 3 instance of the tmu controller
with the thermal zone and hence reports 3 temperature output. This controller
supports upto five trip points. For critical threshold the driver uses the
core driver thermal framework for shutdown.
Acked-by: Jonghwa Lee <jonghwa3.lee@samsung.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Jungseok Lee <jays.lee@samsung.com>
Signed-off-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
---
drivers/thermal/samsung/exynos_thermal_common.h | 2 +-
drivers/thermal/samsung/exynos_tmu.c | 55 +++++++++++++++++++---
drivers/thermal/samsung/exynos_tmu.h | 6 +++
drivers/thermal/samsung/exynos_tmu_data.h | 36 +++++++++++++++
4 files changed, 90 insertions(+), 9 deletions(-)
diff --git a/drivers/thermal/samsung/exynos_thermal_common.h b/drivers/thermal/samsung/exynos_thermal_common.h
index bc3016e..3eb2ed9 100644
--- a/drivers/thermal/samsung/exynos_thermal_common.h
+++ b/drivers/thermal/samsung/exynos_thermal_common.h
@@ -27,7 +27,7 @@
#define SENSOR_NAME_LEN 16
#define MAX_TRIP_COUNT 8
#define MAX_COOLING_DEVICE 4
-#define MAX_THRESHOLD_LEVS 4
+#define MAX_THRESHOLD_LEVS 5
#define ACTIVE_INTERVAL 500
#define IDLE_INTERVAL 10000
diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c
index 31bf373..6bc86f6 100644
--- a/drivers/thermal/samsung/exynos_tmu.c
+++ b/drivers/thermal/samsung/exynos_tmu.c
@@ -156,7 +156,26 @@ static int exynos_tmu_initialize(struct platform_device *pdev)
__raw_writel(1, data->base + reg->triminfo_ctrl);
/* Save trimming info in order to perform calibration */
- trim_info = readl(data->base + reg->triminfo_data);
+ if (data->soc == SOC_ARCH_EXYNOS5440) {
+ /*
+ * For exynos5440 soc triminfo value is swapped between TMU0 and
+ * TMU2, so the below logic is needed.
+ */
+ switch (data->id) {
+ case 0:
+ trim_info = readl(data->base +
+ EXYNOS5440_EFUSE_SWAP_OFFSET + reg->triminfo_data);
+ break;
+ case 1:
+ trim_info = readl(data->base + reg->triminfo_data);
+ break;
+ case 2:
+ trim_info = readl(data->base -
+ EXYNOS5440_EFUSE_SWAP_OFFSET + reg->triminfo_data);
+ }
+ } else {
+ trim_info = readl(data->base + reg->triminfo_data);
+ }
data->temp_error1 = trim_info & EXYNOS_TMU_TEMP_MASK;
data->temp_error2 = ((trim_info >> reg->triminfo_85_shift) &
EXYNOS_TMU_TEMP_MASK);
@@ -201,7 +220,7 @@ static int exynos_tmu_initialize(struct platform_device *pdev)
reg->threshold_th0 + i * sizeof(reg->threshold_th0));
writel(reg->inten_rise_mask, data->base + reg->tmu_intclear);
- } else if (data->soc == SOC_ARCH_EXYNOS) {
+ } else {
/* Write temperature code for rising and falling threshold */
for (i = 0;
i < trigger_levs && i < EXYNOS_MAX_TRIGGER_PER_REG; i++) {
@@ -241,14 +260,26 @@ static int exynos_tmu_initialize(struct platform_device *pdev)
ret = threshold_code;
goto out;
}
- rising_threshold |= threshold_code << 8 * i;
- writel(rising_threshold,
- data->base + reg->threshold_th0);
+ if (i == EXYNOS_MAX_TRIGGER_PER_REG - 1) {
+ /* 1-4 level to be assigned in th0 reg */
+ rising_threshold |= threshold_code << 8 * i;
+ writel(rising_threshold,
+ data->base + reg->threshold_th0);
+ } else if (i == EXYNOS_MAX_TRIGGER_PER_REG) {
+ /* 5th level to be assigned in th2 reg */
+ rising_threshold =
+ threshold_code << reg->threshold_th3_l0_shift;
+ writel(rising_threshold,
+ data->base + reg->threshold_th2);
+ }
con = readl(data->base + reg->tmu_ctrl);
con |= (1 << reg->therm_trip_en_shift);
writel(con, data->base + reg->tmu_ctrl);
}
}
+ /*Clear the PMIN in the common TMU register*/
+ if (reg->tmu_pmin && !data->id)
+ writel(0, data->base_common + reg->tmu_pmin);
out:
clk_disable(data->clk);
mutex_unlock(&data->lock);
@@ -377,7 +408,14 @@ static void exynos_tmu_work(struct work_struct *work)
struct exynos_tmu_data, irq_work);
struct exynos_tmu_platform_data *pdata = data->pdata;
const struct exynos_tmu_registers *reg = pdata->registers;
- unsigned int val_irq;
+ unsigned int val_irq, val_type;
+
+ /* Find which sensor generated this interrupt */
+ if (reg->tmu_irqstatus) {
+ val_type = readl(data->base_common + reg->tmu_irqstatus);
+ if (!((val_type >> data->id) & 0x1))
+ goto out;
+ }
exynos_report_trigger(data->reg_conf);
mutex_lock(&data->lock);
@@ -390,7 +428,7 @@ static void exynos_tmu_work(struct work_struct *work)
clk_disable(data->clk);
mutex_unlock(&data->lock);
-
+out:
enable_irq(data->irq);
}
@@ -538,7 +576,8 @@ static int exynos_tmu_probe(struct platform_device *pdev)
return ret;
if (pdata->type == SOC_ARCH_EXYNOS ||
- pdata->type == SOC_ARCH_EXYNOS4210)
+ pdata->type == SOC_ARCH_EXYNOS4210 ||
+ pdata->type == SOC_ARCH_EXYNOS5440)
data->soc = pdata->type;
else {
ret = -EINVAL;
diff --git a/drivers/thermal/samsung/exynos_tmu.h b/drivers/thermal/samsung/exynos_tmu.h
index ff8844f..25c48d4 100644
--- a/drivers/thermal/samsung/exynos_tmu.h
+++ b/drivers/thermal/samsung/exynos_tmu.h
@@ -40,6 +40,7 @@ enum calibration_mode {
enum soc_type {
SOC_ARCH_EXYNOS4210 = 1,
SOC_ARCH_EXYNOS,
+ SOC_ARCH_EXYNOS5440,
};
/**
@@ -131,6 +132,8 @@ enum soc_type {
* @emul_temp_shift: shift bits of emulation temperature.
* @emul_time_shift: shift bits of emulation time.
* @emul_time_mask: mask bits of emulation time.
+ * @tmu_irqstatus: register to find which TMU generated interrupts.
+ * @tmu_pmin: register to get/set the Pmin value.
*/
struct exynos_tmu_registers {
u32 triminfo_data;
@@ -198,6 +201,9 @@ struct exynos_tmu_registers {
u32 emul_temp_shift;
u32 emul_time_shift;
u32 emul_time_mask;
+
+ u32 tmu_irqstatus;
+ u32 tmu_pmin;
};
/**
diff --git a/drivers/thermal/samsung/exynos_tmu_data.h b/drivers/thermal/samsung/exynos_tmu_data.h
index 139dbbb..ad263e9 100644
--- a/drivers/thermal/samsung/exynos_tmu_data.h
+++ b/drivers/thermal/samsung/exynos_tmu_data.h
@@ -93,6 +93,42 @@
#define EXYNOS_MAX_TRIGGER_PER_REG 4
+/*exynos5440 specific registers*/
+#define EXYNOS5440_TMU_S0_7_TRIM 0x000
+#define EXYNOS5440_TMU_S0_7_CTRL 0x020
+#define EXYNOS5440_TMU_S0_7_DEBUG 0x040
+#define EXYNOS5440_TMU_S0_7_STATUS 0x060
+#define EXYNOS5440_TMU_S0_7_TEMP 0x0f0
+#define EXYNOS5440_TMU_S0_7_TH0 0x110
+#define EXYNOS5440_TMU_S0_7_TH1 0x130
+#define EXYNOS5440_TMU_S0_7_TH2 0x150
+#define EXYNOS5440_TMU_S0_7_EVTEN 0x1F0
+#define EXYNOS5440_TMU_S0_7_IRQEN 0x210
+#define EXYNOS5440_TMU_S0_7_IRQ 0x230
+/* exynos5440 common registers */
+#define EXYNOS5440_TMU_IRQ_STATUS 0x000
+#define EXYNOS5440_TMU_PMIN 0x004
+#define EXYNOS5440_TMU_TEMP 0x008
+
+#define EXYNOS5440_TMU_RISE_INT_MASK 0xf
+#define EXYNOS5440_TMU_RISE_INT_SHIFT 0
+#define EXYNOS5440_TMU_FALL_INT_MASK 0xf
+#define EXYNOS5440_TMU_FALL_INT_SHIFT 4
+#define EXYNOS5440_TMU_INTEN_RISE0_SHIFT 0
+#define EXYNOS5440_TMU_INTEN_RISE1_SHIFT 1
+#define EXYNOS5440_TMU_INTEN_RISE2_SHIFT 2
+#define EXYNOS5440_TMU_INTEN_RISE3_SHIFT 3
+#define EXYNOS5440_TMU_INTEN_FALL0_SHIFT 4
+#define EXYNOS5440_TMU_INTEN_FALL1_SHIFT 5
+#define EXYNOS5440_TMU_INTEN_FALL2_SHIFT 6
+#define EXYNOS5440_TMU_INTEN_FALL3_SHIFT 7
+#define EXYNOS5440_TMU_TH_RISE0_SHIFT 0
+#define EXYNOS5440_TMU_TH_RISE1_SHIFT 8
+#define EXYNOS5440_TMU_TH_RISE2_SHIFT 16
+#define EXYNOS5440_TMU_TH_RISE3_SHIFT 24
+#define EXYNOS5440_TMU_TH_RISE4_SHIFT 24
+#define EXYNOS5440_EFUSE_SWAP_OFFSET 8
+
#if defined(CONFIG_CPU_EXYNOS4210)
extern struct exynos_tmu_init_data const exynos4210_default_tmu_data;
#define EXYNOS4210_TMU_DRV_DATA (&exynos4210_default_tmu_data)
--
1.7.1
next prev parent reply other threads:[~2013-06-24 10:52 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-24 10:50 [PATCH V7 00/30] thermal: exynos: Re-structure driver and add support for exynos5440 Amit Daniel Kachhap
2013-06-24 10:50 ` [PATCH V7 01/30] thermal: exynos: Moving exynos thermal files into samsung directory Amit Daniel Kachhap
2013-06-24 10:50 ` [PATCH V7 02/30] thermal: exynos: Use ARCH_HAS_BANDGAP config to know the supported soc's Amit Daniel Kachhap
2013-06-24 10:50 ` [PATCH V7 03/30] thermal: exynos: Remove un-necessary CPU_THERMAL dependency Amit Daniel Kachhap
2013-06-24 10:50 ` [PATCH V7 04/30] thermal: exynos: Bifurcate exynos thermal common and tmu controller code Amit Daniel Kachhap
2013-06-24 10:50 ` [PATCH V7 05/30] thermal: exynos: Rename exynos_thermal.c to exynos_tmu.c Amit Daniel Kachhap
2013-06-24 10:50 ` [PATCH V7 06/30] thermal: exynos: Move exynos_thermal.h from include/* to driver/* folder Amit Daniel Kachhap
2013-06-24 10:50 ` [PATCH V7 07/30] thermal: exynos: Bifurcate exynos tmu driver and configuration data Amit Daniel Kachhap
2013-06-24 10:50 ` [PATCH V7 08/30] thermal: exynos: Add missing definations and code cleanup Amit Daniel Kachhap
2013-06-24 15:00 ` Eduardo Valentin
2013-06-24 10:50 ` [PATCH V7 09/30] thermal: exynos: Add extra entries in the tmu platform data Amit Daniel Kachhap
2013-06-24 15:33 ` Eduardo Valentin
2013-06-24 10:50 ` [PATCH V7 10/30] thermal: exynos: Move register definitions from driver to data file Amit Daniel Kachhap
2013-06-24 10:50 ` [PATCH V7 11/30] thermal: exynos: Support thermal tripping Amit Daniel Kachhap
2013-06-24 10:50 ` [PATCH V7 12/30] thermal: exynos: Fix to clear only the generated interrupts Amit Daniel Kachhap
2013-06-24 10:50 ` [PATCH V7 13/30] thermal: exynos: Add support for instance based register/unregister Amit Daniel Kachhap
2013-06-24 10:50 ` [PATCH V7 14/30] thermal: exynos: Modify private_data to appropriate name driver_data Amit Daniel Kachhap
2013-06-24 10:50 ` [PATCH V7 15/30] thermal: exynos: Return success even if no cooling data supplied Amit Daniel Kachhap
2013-06-24 10:50 ` [PATCH V7 16/30] thermal: exynos: Make the zone handling use trip information Amit Daniel Kachhap
2013-06-24 15:41 ` Eduardo Valentin
2013-06-25 8:33 ` amit daniel kachhap
2013-06-25 11:39 ` [PATCH RESEND " Amit Daniel Kachhap
2013-06-25 13:36 ` Eduardo Valentin
2013-06-24 10:50 ` [PATCH V7 17/30] thermal: exynos: Remove non DT based support Amit Daniel Kachhap
2013-06-24 10:50 ` [PATCH V7 18/30] thermal: exynos: Add support to handle many instances of TMU Amit Daniel Kachhap
2013-06-24 15:50 ` Eduardo Valentin
2013-06-24 10:50 ` [PATCH V7 19/30] thermal: exynos: Add TMU features to check instead of using SOC type Amit Daniel Kachhap
2013-06-24 10:50 ` [PATCH V7 20/30] thermal: exynos: use device resource management infrastructure Amit Daniel Kachhap
2013-06-25 11:41 ` [PATCH RESEND " Amit Daniel Kachhap
2013-06-24 10:50 ` [PATCH V7 21/30] thermal: exynos: Add support to access common register for multistance Amit Daniel Kachhap
2013-06-24 10:50 ` Amit Daniel Kachhap [this message]
2013-06-24 19:43 ` [PATCH V7 22/30] thermal: exynos: Add driver support for exynos5440 TMU sensor Eduardo Valentin
2013-06-24 10:50 ` [PATCH V7 23/30] thermal: exynos: Add thermal configuration data " Amit Daniel Kachhap
2013-06-24 16:37 ` Eduardo Valentin
2013-06-26 1:24 ` Jungseok Lee
2013-08-07 9:53 ` Naveen Krishna Ch
2013-06-24 10:50 ` [PATCH V7 24/30] thermal: exynos: Fix to set the second point correction value Amit Daniel Kachhap
2013-06-24 10:50 ` [PATCH V7 25/30] thermal: exynos: Add hardware mode thermal calibration support Amit Daniel Kachhap
2013-06-24 19:39 ` Eduardo Valentin
2013-06-25 9:12 ` amit daniel kachhap
2013-06-25 11:46 ` [PATCH RESEND " Amit Daniel Kachhap
2013-06-25 13:38 ` Eduardo Valentin
2013-06-24 10:50 ` [PATCH V7 26/30] thermal: exynos: Support for TMU regulator defined at device tree Amit Daniel Kachhap
2013-06-24 10:50 ` [PATCH V7 27/30] ARM: dts: thermal: exynos: Add documentation for Exynos SoC thermal bindings Amit Daniel Kachhap
2013-06-24 17:05 ` Eduardo Valentin
2013-06-24 10:50 ` [PATCH V7 28/30] Documentation: thermal: Explain the exynos thermal driver model Amit Daniel Kachhap
2013-06-24 10:50 ` [PATCH V7 29/30] ARM: dts: Add device tree node for exynos5440 TMU controller Amit Daniel Kachhap
2013-06-24 10:50 ` [PATCH V7 30/30] arm: exynos: enable ARCH_HAS_BANDGAP Amit Daniel Kachhap
2013-06-24 17:11 ` Eduardo Valentin
2013-06-24 17:13 ` [PATCH V7 00/30] thermal: exynos: Re-structure driver and add support for exynos5440 Kukjin Kim
2013-06-24 19:51 ` Eduardo Valentin
2013-06-25 11:53 ` amit daniel kachhap
2013-06-28 5:19 ` amit daniel kachhap
2013-06-28 5:30 ` Zhang, Rui
2013-07-08 23:13 ` Eduardo Valentin
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