[PATCH v2 24/33] thermal: exynos: add ->tmu_clear_irqs method

From: Bartlomiej Zolnierkiewicz
Date: Thu Nov 13 2014 - 10:06:25 EST

Add ->tmu_clear_irqs method to struct exynos_tmu_data and use
it instead exynos_tmu_clear_irqs(). Then add ->tmu_clear_irqs
implementations for Exynos4210+ and Exynos5440. Finally
remove no longer needed reg->tmu_int[stat,clear] abstractions
and struct exynos_tmu_registers instances.

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 | 64 +++++++++++++++++++++----------
drivers/thermal/samsung/exynos_tmu.h | 14 -------
drivers/thermal/samsung/exynos_tmu_data.c | 36 -----------------
3 files changed, 43 insertions(+), 71 deletions(-)

diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c
index 01aa548..1b3c2f4 100644
--- a/drivers/thermal/samsung/exynos_tmu.c
+++ b/drivers/thermal/samsung/exynos_tmu.c
@@ -56,6 +56,7 @@
* @tmu_control: SoC specific TMU control method
* @tmu_read: SoC specific TMU temperature read method
* @tmu_set_emulation: SoC specific TMU emulation setting method
+ * @tmu_clear_irqs: SoC specific TMU interrupts clearing method
*/
struct exynos_tmu_data {
int id;
@@ -75,6 +76,7 @@ struct exynos_tmu_data {
int (*tmu_read)(struct exynos_tmu_data *data);
void (*tmu_set_emulation)(struct exynos_tmu_data *data,
unsigned long temp);
+ void (*tmu_clear_irqs)(struct exynos_tmu_data *data);
};

/*
@@ -131,23 +133,6 @@ static int code_to_temp(struct exynos_tmu_data *data, u8 temp_code)
return temp;
}

-static void exynos_tmu_clear_irqs(struct exynos_tmu_data *data)
-{
- const struct exynos_tmu_registers *reg = data->pdata->registers;
- unsigned int val_irq;
-
- val_irq = readl(data->base + reg->tmu_intstat);
- /*
- * Clear the interrupts. Please note that the documentation for
- * Exynos3250, Exynos4412, Exynos5250 and Exynos5260 incorrectly
- * states that INTCLEAR register has a different placing of bits
- * responsible for FALL IRQs than INTSTAT register. Exynos5420
- * and Exynos5440 documentation is correct (Exynos4210 doesn't
- * support FALL IRQs at all).
- */
- writel(val_irq, data->base + reg->tmu_intclear);
-}
-
static void sanitize_temp_error(struct exynos_tmu_data *data, u32 trim_info)
{
struct exynos_tmu_platform_data *pdata = data->pdata;
@@ -259,7 +244,7 @@ static int exynos4210_tmu_initialize(struct platform_device *pdev)
writeb(pdata->trigger_levels[i], data->base +
EXYNOS4210_TMU_REG_TRIG_LEVEL0 + i * 4);

- exynos_tmu_clear_irqs(data);
+ data->tmu_clear_irqs(data);
out:
return ret;
}
@@ -304,7 +289,7 @@ static int exynos4412_tmu_initialize(struct platform_device *pdev)
writel(rising_threshold, data->base + EXYNOS_THD_TEMP_RISE);
writel(get_th_reg(data, 0, true), data->base + EXYNOS_THD_TEMP_FALL);

- exynos_tmu_clear_irqs(data);
+ data->tmu_clear_irqs(data);

/* if last threshold limit is also present */
i = pdata->max_trigger_level - 1;
@@ -353,7 +338,7 @@ static int exynos5440_tmu_initialize(struct platform_device *pdev)
writel(rising_threshold, data->base + EXYNOS5440_TMU_S0_7_TH0);
writel(0, data->base + EXYNOS5440_TMU_S0_7_TH1);

- exynos_tmu_clear_irqs(data);
+ data->tmu_clear_irqs(data);

/* if last threshold limit is also present */
i = pdata->max_trigger_level - 1;
@@ -557,7 +542,7 @@ static void exynos_tmu_work(struct work_struct *work)
clk_enable(data->clk);

/* TODO: take action based on particular interrupt */
- exynos_tmu_clear_irqs(data);
+ data->tmu_clear_irqs(data);

clk_disable(data->clk);
mutex_unlock(&data->lock);
@@ -565,6 +550,40 @@ out:
enable_irq(data->irq);
}

+static void exynos4210_tmu_clear_irqs(struct exynos_tmu_data *data)
+{
+ unsigned int val_irq;
+ u32 tmu_intstat, tmu_intclear;
+
+ if (data->soc == SOC_ARCH_EXYNOS5260) {
+ tmu_intstat = EXYNOS5260_TMU_REG_INTSTAT;
+ tmu_intclear = EXYNOS5260_TMU_REG_INTCLEAR;
+ } else {
+ tmu_intstat = EXYNOS_TMU_REG_INTSTAT;
+ tmu_intclear = EXYNOS_TMU_REG_INTCLEAR;
+ }
+
+ val_irq = readl(data->base + tmu_intstat);
+ /*
+ * Clear the interrupts. Please note that the documentation for
+ * Exynos3250, Exynos4412, Exynos5250 and Exynos5260 incorrectly
+ * states that INTCLEAR register has a different placing of bits
+ * responsible for FALL IRQs than INTSTAT register. Exynos5420
+ * and Exynos5440 documentation is correct (Exynos4210 doesn't
+ * support FALL IRQs at all).
+ */
+ writel(val_irq, data->base + tmu_intclear);
+}
+
+static void exynos5440_tmu_clear_irqs(struct exynos_tmu_data *data)
+{
+ unsigned int val_irq;
+
+ val_irq = readl(data->base + EXYNOS5440_TMU_S0_7_IRQ);
+ /* clear the interrupts */
+ writel(val_irq, data->base + EXYNOS5440_TMU_S0_7_IRQ);
+}
+
static irqreturn_t exynos_tmu_irq(int irq, void *id)
{
struct exynos_tmu_data *data = id;
@@ -760,6 +779,7 @@ static int exynos_tmu_probe(struct platform_device *pdev)
data->tmu_initialize = exynos4210_tmu_initialize;
data->tmu_control = exynos4210_tmu_control;
data->tmu_read = exynos4210_tmu_read;
+ data->tmu_clear_irqs = exynos4210_tmu_clear_irqs;
break;
case SOC_ARCH_EXYNOS3250:
case SOC_ARCH_EXYNOS4412:
@@ -771,12 +791,14 @@ static int exynos_tmu_probe(struct platform_device *pdev)
data->tmu_control = exynos4210_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;
data->tmu_read = exynos5440_tmu_read;
data->tmu_set_emulation = exynos5440_tmu_set_emulation;
+ data->tmu_clear_irqs = exynos5440_tmu_clear_irqs;
break;
default:
ret = -EINVAL;
diff --git a/drivers/thermal/samsung/exynos_tmu.h b/drivers/thermal/samsung/exynos_tmu.h
index 785eccf..c4c0aa5 100644
--- a/drivers/thermal/samsung/exynos_tmu.h
+++ b/drivers/thermal/samsung/exynos_tmu.h
@@ -68,17 +68,6 @@ enum soc_type {
#define TMU_SUPPORTS(a, b) (a->features & TMU_SUPPORT_ ## b)

/**
- * struct exynos_tmu_register - register descriptors to access registers.
- * The register validity may vary slightly across different exynos SOC's.
- * @tmu_intstat: Register containing the interrupt status values.
- * @tmu_intclear: Register for clearing the raised interrupt status.
- */
-struct exynos_tmu_registers {
- u32 tmu_intstat;
- u32 tmu_intclear;
-};
-
-/**
* struct exynos_tmu_platform_data
* @threshold: basic temperature for generating interrupt
* 25 <= threshold <= 125 [unit: degree Celsius]
@@ -127,8 +116,6 @@ struct exynos_tmu_registers {
* @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.
- * @registers: Pointer to structure containing all the TMU controller registers
- * and bitfields shifts and masks.
* @features: a bitfield value indicating the features supported in SOC like
* emulation, multi instance etc
*
@@ -158,7 +145,6 @@ struct exynos_tmu_platform_data {
enum soc_type type;
struct freq_clip_table freq_tab[4];
unsigned int freq_tab_count;
- const struct exynos_tmu_registers *registers;
unsigned int features;
};

diff --git a/drivers/thermal/samsung/exynos_tmu_data.c b/drivers/thermal/samsung/exynos_tmu_data.c
index d0bb4b3..d35ec15 100644
--- a/drivers/thermal/samsung/exynos_tmu_data.c
+++ b/drivers/thermal/samsung/exynos_tmu_data.c
@@ -25,11 +25,6 @@
#include "exynos_tmu_data.h"

#if defined(CONFIG_CPU_EXYNOS4210)
-static const struct exynos_tmu_registers exynos4210_tmu_registers = {
- .tmu_intstat = EXYNOS_TMU_REG_INTSTAT,
- .tmu_intclear = EXYNOS_TMU_REG_INTCLEAR,
-};
-
struct exynos_tmu_init_data const exynos4210_default_tmu_data = {
.tmu_data = {
{
@@ -64,7 +59,6 @@ struct exynos_tmu_init_data const exynos4210_default_tmu_data = {
},
.freq_tab_count = 2,
.type = SOC_ARCH_EXYNOS4210,
- .registers = &exynos4210_tmu_registers,
},
},
.tmu_count = 1,
@@ -72,11 +66,6 @@ struct exynos_tmu_init_data const exynos4210_default_tmu_data = {
#endif

#if defined(CONFIG_SOC_EXYNOS3250)
-static const struct exynos_tmu_registers exynos3250_tmu_registers = {
- .tmu_intstat = EXYNOS_TMU_REG_INTSTAT,
- .tmu_intclear = EXYNOS_TMU_REG_INTCLEAR,
-};
-
#define EXYNOS3250_TMU_DATA \
.threshold_falling = 10, \
.trigger_levels[0] = 70, \
@@ -112,7 +101,6 @@ static const struct exynos_tmu_registers exynos3250_tmu_registers = {
.temp_level = 95, \
}, \
.freq_tab_count = 2, \
- .registers = &exynos3250_tmu_registers, \
.features = (TMU_SUPPORT_EMULATION | TMU_SUPPORT_FALLING_TRIP | \
TMU_SUPPORT_EMUL_TIME)
#endif
@@ -131,11 +119,6 @@ struct exynos_tmu_init_data const exynos3250_default_tmu_data = {
#endif

#if defined(CONFIG_SOC_EXYNOS4412) || defined(CONFIG_SOC_EXYNOS5250)
-static const struct exynos_tmu_registers exynos4412_tmu_registers = {
- .tmu_intstat = EXYNOS_TMU_REG_INTSTAT,
- .tmu_intclear = EXYNOS_TMU_REG_INTCLEAR,
-};
-
#define EXYNOS4412_TMU_DATA \
.threshold_falling = 10, \
.trigger_levels[0] = 70, \
@@ -171,7 +154,6 @@ static const struct exynos_tmu_registers exynos4412_tmu_registers = {
.temp_level = 95, \
}, \
.freq_tab_count = 2, \
- .registers = &exynos4412_tmu_registers, \
.features = (TMU_SUPPORT_EMULATION | TMU_SUPPORT_FALLING_TRIP | \
TMU_SUPPORT_EMUL_TIME)
#endif
@@ -202,11 +184,6 @@ struct exynos_tmu_init_data const exynos5250_default_tmu_data = {
#endif

#if defined(CONFIG_SOC_EXYNOS5260)
-static const struct exynos_tmu_registers exynos5260_tmu_registers = {
- .tmu_intstat = EXYNOS5260_TMU_REG_INTSTAT,
- .tmu_intclear = EXYNOS5260_TMU_REG_INTCLEAR,
-};
-
#define __EXYNOS5260_TMU_DATA \
.threshold_falling = 10, \
.trigger_levels[0] = 85, \
@@ -242,7 +219,6 @@ static const struct exynos_tmu_registers exynos5260_tmu_registers = {
.temp_level = 103, \
}, \
.freq_tab_count = 2, \
- .registers = &exynos5260_tmu_registers, \

#define EXYNOS5260_TMU_DATA \
__EXYNOS5260_TMU_DATA \
@@ -263,11 +239,6 @@ struct exynos_tmu_init_data const exynos5260_default_tmu_data = {
#endif

#if defined(CONFIG_SOC_EXYNOS5420)
-static const struct exynos_tmu_registers exynos5420_tmu_registers = {
- .tmu_intstat = EXYNOS_TMU_REG_INTSTAT,
- .tmu_intclear = EXYNOS_TMU_REG_INTCLEAR,
-};
-
#define __EXYNOS5420_TMU_DATA \
.threshold_falling = 10, \
.trigger_levels[0] = 85, \
@@ -303,7 +274,6 @@ static const struct exynos_tmu_registers exynos5420_tmu_registers = {
.temp_level = 103, \
}, \
.freq_tab_count = 2, \
- .registers = &exynos5420_tmu_registers, \

#define EXYNOS5420_TMU_DATA \
__EXYNOS5420_TMU_DATA \
@@ -330,11 +300,6 @@ struct exynos_tmu_init_data const exynos5420_default_tmu_data = {
#endif

#if defined(CONFIG_SOC_EXYNOS5440)
-static const struct exynos_tmu_registers exynos5440_tmu_registers = {
- .tmu_intstat = EXYNOS5440_TMU_S0_7_IRQ,
- .tmu_intclear = EXYNOS5440_TMU_S0_7_IRQ,
-};
-
#define EXYNOS5440_TMU_DATA \
.trigger_levels[0] = 100, \
.trigger_levels[4] = 105, \
@@ -354,7 +319,6 @@ static const struct exynos_tmu_registers exynos5440_tmu_registers = {
.second_point_trim = 70, \
.default_temp_offset = 25, \
.type = SOC_ARCH_EXYNOS5440, \
- .registers = &exynos5440_tmu_registers, \
.features = (TMU_SUPPORT_EMULATION | TMU_SUPPORT_FALLING_TRIP | \
TMU_SUPPORT_MULTI_INST | TMU_SUPPORT_ADDRESS_MULTIPLE),

--
1.8.2.3

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