[PATCH v2 21/33] thermal: exynos: add ->tmu_read method

From: Bartlomiej Zolnierkiewicz
Date: Thu Nov 13 2014 - 10:05:57 EST

Add ->tmu_read method to struct exynos_tmu_data and use it
in exynos_tmu_control(). Then add ->tmu_read implementations
for Exynos4210, Exynos4412+ and Exynos5440. Finally remove
no longer needed reg->tmu_cur_temp abstractions.

There should be no functional changes caused by this patch.

Cc: Amit Daniel Kachhap <amit.daniel@xxxxxxxxxxx>
Cc: Lukasz Majewski <l.majewski@xxxxxxxxxxx>
Cc: Eduardo Valentin <edubezval@xxxxxxxxx>
Cc: Zhang Rui <rui.zhang@xxxxxxxxx>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@xxxxxxxxxxx>
Acked-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
---
drivers/thermal/samsung/exynos_tmu.c | 45 +++++++++++++++++++------------
drivers/thermal/samsung/exynos_tmu.h | 2 --
drivers/thermal/samsung/exynos_tmu_data.c | 6 -----
3 files changed, 28 insertions(+), 25 deletions(-)

diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c
index 938e8e63..b209593 100644
--- a/drivers/thermal/samsung/exynos_tmu.c
+++ b/drivers/thermal/samsung/exynos_tmu.c
@@ -54,6 +54,7 @@
* @reg_conf: pointer to structure to register with core thermal.
* @tmu_initialize: SoC specific TMU initialization method
* @tmu_control: SoC specific TMU control method
+ * @tmu_read: SoC specific TMU temperature read method
*/
struct exynos_tmu_data {
int id;
@@ -70,6 +71,7 @@ struct exynos_tmu_data {
struct thermal_sensor_conf *reg_conf;
int (*tmu_initialize)(struct platform_device *pdev);
void (*tmu_control)(struct platform_device *pdev, bool on);
+ int (*tmu_read)(struct exynos_tmu_data *data);
};

/*
@@ -422,29 +424,17 @@ static void exynos5440_tmu_control(struct platform_device *pdev, bool on)

static int exynos_tmu_read(struct exynos_tmu_data *data)
{
- struct exynos_tmu_platform_data *pdata = data->pdata;
- const struct exynos_tmu_registers *reg = pdata->registers;
- u8 temp_code;
- int temp;
+ int ret;

mutex_lock(&data->lock);
clk_enable(data->clk);
-
- temp_code = readb(data->base + reg->tmu_cur_temp);
-
- if (data->soc == SOC_ARCH_EXYNOS4210)
- /* temp_code should range between 75 and 175 */
- if (temp_code < 75 || temp_code > 175) {
- temp = -ENODATA;
- goto out;
- }
-
- temp = code_to_temp(data, temp_code);
-out:
+ ret = data->tmu_read(data);
+ if (ret >= 0)
+ ret = code_to_temp(data, ret);
clk_disable(data->clk);
mutex_unlock(&data->lock);

- return temp;
+ return ret;
}

#ifdef CONFIG_THERMAL_EMULATION
@@ -494,6 +484,24 @@ static int exynos_tmu_set_emulation(void *drv_data, unsigned long temp)
{ return -EINVAL; }
#endif/*CONFIG_THERMAL_EMULATION*/

+static int exynos4210_tmu_read(struct exynos_tmu_data *data)
+{
+ int ret = readb(data->base + EXYNOS_TMU_REG_CURRENT_TEMP);
+
+ /* "temp_code" should range between 75 and 175 */
+ return (ret < 75 || ret > 175) ? -ENODATA : ret;
+}
+
+static int exynos4412_tmu_read(struct exynos_tmu_data *data)
+{
+ return readb(data->base + EXYNOS_TMU_REG_CURRENT_TEMP);
+}
+
+static int exynos5440_tmu_read(struct exynos_tmu_data *data)
+{
+ return readb(data->base + EXYNOS5440_TMU_S0_7_TEMP);
+}
+
static void exynos_tmu_work(struct work_struct *work)
{
struct exynos_tmu_data *data = container_of(work,
@@ -718,6 +726,7 @@ static int exynos_tmu_probe(struct platform_device *pdev)
case SOC_ARCH_EXYNOS4210:
data->tmu_initialize = exynos4210_tmu_initialize;
data->tmu_control = exynos4210_tmu_control;
+ data->tmu_read = exynos4210_tmu_read;
break;
case SOC_ARCH_EXYNOS3250:
case SOC_ARCH_EXYNOS4412:
@@ -727,10 +736,12 @@ static int exynos_tmu_probe(struct platform_device *pdev)
case SOC_ARCH_EXYNOS5420_TRIMINFO:
data->tmu_initialize = exynos4412_tmu_initialize;
data->tmu_control = exynos4210_tmu_control;
+ data->tmu_read = exynos4412_tmu_read;
break;
case SOC_ARCH_EXYNOS5440:
data->tmu_initialize = exynos5440_tmu_initialize;
data->tmu_control = exynos5440_tmu_control;
+ data->tmu_read = exynos5440_tmu_read;
break;
default:
ret = -EINVAL;
diff --git a/drivers/thermal/samsung/exynos_tmu.h b/drivers/thermal/samsung/exynos_tmu.h
index 7496b54..9460e6e 100644
--- a/drivers/thermal/samsung/exynos_tmu.h
+++ b/drivers/thermal/samsung/exynos_tmu.h
@@ -70,13 +70,11 @@ enum soc_type {
/**
* struct exynos_tmu_register - register descriptors to access registers.
* The register validity may vary slightly across different exynos SOC's.
- * @tmu_cur_temp: register containing the current temperature of the TMU.
* @tmu_intstat: Register containing the interrupt status values.
* @tmu_intclear: Register for clearing the raised interrupt status.
* @emul_con: TMU emulation controller register.
*/
struct exynos_tmu_registers {
- u32 tmu_cur_temp;
u32 tmu_intstat;
u32 tmu_intclear;
u32 emul_con;
diff --git a/drivers/thermal/samsung/exynos_tmu_data.c b/drivers/thermal/samsung/exynos_tmu_data.c
index 2bfd469..769b89d 100644
--- a/drivers/thermal/samsung/exynos_tmu_data.c
+++ b/drivers/thermal/samsung/exynos_tmu_data.c
@@ -26,7 +26,6 @@

#if defined(CONFIG_CPU_EXYNOS4210)
static const struct exynos_tmu_registers exynos4210_tmu_registers = {
- .tmu_cur_temp = EXYNOS_TMU_REG_CURRENT_TEMP,
.tmu_intstat = EXYNOS_TMU_REG_INTSTAT,
.tmu_intclear = EXYNOS_TMU_REG_INTCLEAR,
};
@@ -74,7 +73,6 @@ struct exynos_tmu_init_data const exynos4210_default_tmu_data = {

#if defined(CONFIG_SOC_EXYNOS3250)
static const struct exynos_tmu_registers exynos3250_tmu_registers = {
- .tmu_cur_temp = EXYNOS_TMU_REG_CURRENT_TEMP,
.tmu_intstat = EXYNOS_TMU_REG_INTSTAT,
.tmu_intclear = EXYNOS_TMU_REG_INTCLEAR,
.emul_con = EXYNOS_EMUL_CON,
@@ -135,7 +133,6 @@ struct exynos_tmu_init_data const exynos3250_default_tmu_data = {

#if defined(CONFIG_SOC_EXYNOS4412) || defined(CONFIG_SOC_EXYNOS5250)
static const struct exynos_tmu_registers exynos4412_tmu_registers = {
- .tmu_cur_temp = EXYNOS_TMU_REG_CURRENT_TEMP,
.tmu_intstat = EXYNOS_TMU_REG_INTSTAT,
.tmu_intclear = EXYNOS_TMU_REG_INTCLEAR,
.emul_con = EXYNOS_EMUL_CON,
@@ -208,7 +205,6 @@ struct exynos_tmu_init_data const exynos5250_default_tmu_data = {

#if defined(CONFIG_SOC_EXYNOS5260)
static const struct exynos_tmu_registers exynos5260_tmu_registers = {
- .tmu_cur_temp = EXYNOS_TMU_REG_CURRENT_TEMP,
.tmu_intstat = EXYNOS5260_TMU_REG_INTSTAT,
.tmu_intclear = EXYNOS5260_TMU_REG_INTCLEAR,
.emul_con = EXYNOS5260_EMUL_CON,
@@ -271,7 +267,6 @@ struct exynos_tmu_init_data const exynos5260_default_tmu_data = {

#if defined(CONFIG_SOC_EXYNOS5420)
static const struct exynos_tmu_registers exynos5420_tmu_registers = {
- .tmu_cur_temp = EXYNOS_TMU_REG_CURRENT_TEMP,
.tmu_intstat = EXYNOS_TMU_REG_INTSTAT,
.tmu_intclear = EXYNOS_TMU_REG_INTCLEAR,
.emul_con = EXYNOS_EMUL_CON,
@@ -340,7 +335,6 @@ struct exynos_tmu_init_data const exynos5420_default_tmu_data = {

#if defined(CONFIG_SOC_EXYNOS5440)
static const struct exynos_tmu_registers exynos5440_tmu_registers = {
- .tmu_cur_temp = EXYNOS5440_TMU_S0_7_TEMP,
.tmu_intstat = EXYNOS5440_TMU_S0_7_IRQ,
.tmu_intclear = EXYNOS5440_TMU_S0_7_IRQ,
.emul_con = EXYNOS5440_TMU_S0_7_DEBUG,
--
1.8.2.3

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