[PATCH V2 6/6] ARM: exynos4: Add thermal sensor driver platform device support

From: Amit Daniel Kachhap
Date: Mon Mar 19 2012 - 02:18:38 EST

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This patch adds necessary source definations needed for TMU driver and
the platform device support.

Signed-off-by: Amit Daniel Kachhap <amit.kachhap@xxxxxxxxxx>
---
arch/arm/mach-exynos/Kconfig | 11 +++++++
arch/arm/mach-exynos/Makefile | 1 +
arch/arm/mach-exynos/clock.c | 4 ++
arch/arm/mach-exynos/dev-tmu.c | 39 ++++++++++++++++++++++++
arch/arm/mach-exynos/include/mach/irqs.h | 2 +
arch/arm/mach-exynos/include/mach/map.h | 1 +
arch/arm/mach-exynos/mach-origen.c | 1 +
arch/arm/plat-samsung/include/plat/devs.h | 1 +
drivers/thermal/exynos4_thermal.c | 47 +++++++++++++++++++++++++++++
9 files changed, 107 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/mach-exynos/dev-tmu.c

diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig
index 5d602f6..03968a6 100644
--- a/arch/arm/mach-exynos/Kconfig
+++ b/arch/arm/mach-exynos/Kconfig
@@ -160,6 +160,16 @@ config EXYNOS4_SETUP_SPI
help
Common setup code for SPI GPIO configurations.

+config EXYNOS4_DEV_TMU
+ bool "Exynos4 tmu device support"
+ default n
+ depends on ARCH_EXYNOS4
+ ---help---
+ Compile in platform device definitions for TMU. This macro also
+ enables compilation hwmon base TMU driver and also allows compilation
+ of the platform device files. The platform data in this case is trip
+ temperature and some tmu h/w configurations related parameter.
+
# machine support

if ARCH_EXYNOS4
@@ -199,6 +209,7 @@ config MACH_SMDKV310
select SAMSUNG_DEV_PWM
select EXYNOS4_DEV_USB_OHCI
select EXYNOS4_DEV_SYSMMU
+ select EXYNOS4_DEV_TMU
select EXYNOS4_SETUP_FIMD0
select EXYNOS4_SETUP_I2C1
select EXYNOS4_SETUP_KEYPAD
diff --git a/arch/arm/mach-exynos/Makefile b/arch/arm/mach-exynos/Makefile
index 5fc202c..9b62e69 100644
--- a/arch/arm/mach-exynos/Makefile
+++ b/arch/arm/mach-exynos/Makefile
@@ -50,6 +50,7 @@ obj-$(CONFIG_EXYNOS4_DEV_SYSMMU) += dev-sysmmu.o
obj-$(CONFIG_EXYNOS4_DEV_DWMCI) += dev-dwmci.o
obj-$(CONFIG_EXYNOS4_DEV_DMA) += dma.o
obj-$(CONFIG_EXYNOS4_DEV_USB_OHCI) += dev-ohci.o
+obj-$(CONFIG_EXYNOS4_DEV_TMU) += dev-tmu.o

obj-$(CONFIG_ARCH_EXYNOS4) += setup-i2c0.o
obj-$(CONFIG_EXYNOS4_SETUP_FIMC) += setup-fimc.o
diff --git a/arch/arm/mach-exynos/clock.c b/arch/arm/mach-exynos/clock.c
index 187287a..3b15397 100644
--- a/arch/arm/mach-exynos/clock.c
+++ b/arch/arm/mach-exynos/clock.c
@@ -560,6 +560,10 @@ static struct clk init_clocks_off[] = {
.enable = exynos4_clk_ip_peril_ctrl,
.ctrlbit = (1 << 15),
}, {
+ .name = "tmu_apbif",
+ .enable = exynos4_clk_ip_perir_ctrl,
+ .ctrlbit = (1 << 17),
+ }, {
.name = "keypad",
.enable = exynos4_clk_ip_perir_ctrl,
.ctrlbit = (1 << 16),
diff --git a/arch/arm/mach-exynos/dev-tmu.c b/arch/arm/mach-exynos/dev-tmu.c
new file mode 100644
index 0000000..e37f0f5
--- /dev/null
+++ b/arch/arm/mach-exynos/dev-tmu.c
@@ -0,0 +1,39 @@
+/* linux/arch/arm/mach-exynos4/dev-tmu.c
+ *
+ * Copyright 2011 by SAMSUNG
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/platform_data/exynos4_tmu.h>
+#include <asm/irq.h>
+
+#include <mach/irqs.h>
+#include <mach/map.h>
+#include <plat/devs.h>
+
+static struct resource exynos4_tmu_resource[] = {
+ [0] = {
+ .start = EXYNOS4_PA_TMU,
+ .end = EXYNOS4_PA_TMU + 0xFFFF - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = IRQ_TMU_TRIG0,
+ .end = IRQ_TMU_TRIG0,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+struct platform_device exynos4_device_tmu = {
+ .name = "exynos4-tmu",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(exynos4_tmu_resource),
+ .resource = exynos4_tmu_resource,
+};
diff --git a/arch/arm/mach-exynos/include/mach/irqs.h b/arch/arm/mach-exynos/include/mach/irqs.h
index f77bce0..f98d2e4 100644
--- a/arch/arm/mach-exynos/include/mach/irqs.h
+++ b/arch/arm/mach-exynos/include/mach/irqs.h
@@ -128,6 +128,8 @@
#define COMBINER_GROUP(x) ((x) * MAX_IRQ_IN_COMBINER + IRQ_SPI(128))
#define COMBINER_IRQ(x, y) (COMBINER_GROUP(x) + y)

+#define IRQ_TMU_TRIG0 COMBINER_IRQ(2, 4)
+#define IRQ_TMU_TRIG1 COMBINER_IRQ(3, 4)
#define IRQ_SYSMMU_MDMA0_0 COMBINER_IRQ(4, 0)
#define IRQ_SYSMMU_SSS_0 COMBINER_IRQ(4, 1)
#define IRQ_SYSMMU_FIMC0_0 COMBINER_IRQ(4, 2)
diff --git a/arch/arm/mach-exynos/include/mach/map.h b/arch/arm/mach-exynos/include/mach/map.h
index c754a22..bc11f1f 100644
--- a/arch/arm/mach-exynos/include/mach/map.h
+++ b/arch/arm/mach-exynos/include/mach/map.h
@@ -66,6 +66,7 @@
#define EXYNOS4_PA_COREPERI 0x10500000
#define EXYNOS4_PA_TWD 0x10500600
#define EXYNOS4_PA_L2CC 0x10502000
+#define EXYNOS4_PA_TMU 0x100C0000

#define EXYNOS4_PA_MDMA 0x10810000
#define EXYNOS4_PA_PDMA0 0x12680000
diff --git a/arch/arm/mach-exynos/mach-origen.c b/arch/arm/mach-exynos/mach-origen.c
index 0679b8a..5d56e53 100644
--- a/arch/arm/mach-exynos/mach-origen.c
+++ b/arch/arm/mach-exynos/mach-origen.c
@@ -630,6 +630,7 @@ static struct platform_device *origen_devices[] __initdata = {
&exynos4_device_pd[PD_MFC],
&origen_device_gpiokeys,
&origen_lcd_hv070wsa,
+ &exynos4_device_tmu,
};

/* LCD Backlight data */
diff --git a/arch/arm/plat-samsung/include/plat/devs.h b/arch/arm/plat-samsung/include/plat/devs.h
index 4214ea0..0960405 100644
--- a/arch/arm/plat-samsung/include/plat/devs.h
+++ b/arch/arm/plat-samsung/include/plat/devs.h
@@ -130,6 +130,7 @@ extern struct platform_device exynos4_device_pcm2;
extern struct platform_device exynos4_device_pd[];
extern struct platform_device exynos4_device_spdif;
extern struct platform_device exynos4_device_sysmmu;
+extern struct platform_device exynos4_device_tmu;

extern struct platform_device samsung_asoc_dma;
extern struct platform_device samsung_asoc_idma;
diff --git a/drivers/thermal/exynos4_thermal.c b/drivers/thermal/exynos4_thermal.c
index e5be944..7f8b867 100644
--- a/drivers/thermal/exynos4_thermal.c
+++ b/drivers/thermal/exynos4_thermal.c
@@ -573,12 +573,58 @@ static struct thermal_sensor_conf exynos4_sensor_conf = {
.read_temperature = (int (*)(void *))exynos4_tmu_read,
};

+#if defined(CONFIG_CPU_EXYNOS4210)
+static struct exynos4_tmu_platform_data exynos4_default_tmu_data = {
+ .threshold = 80,
+ .trigger_levels[0] = 2,
+ .trigger_levels[1] = 5,
+ .trigger_levels[2] = 20,
+ .trigger_levels[3] = 30,
+ .trigger_level0_en = 1,
+ .trigger_level1_en = 1,
+ .trigger_level2_en = 1,
+ .trigger_level3_en = 1,
+ .gain = 15,
+ .reference_voltage = 7,
+ .cal_type = TYPE_ONE_POINT_TRIMMING,
+ .freq_tab[0] = {
+ .freq_clip_max = 800 * 1000,
+ },
+ .freq_tab[1] = {
+ .freq_clip_max = 200 * 1000,
+ },
+ .freq_tab_count = 2,
+};
+#define EXYNOS4210_TMU_DRV_DATA ((kernel_ulong_t)&exynos4_default_tmu_data)
+#else
+#define EXYNOS4210_TMU_DRV_DATA ((kernel_ulong_t)NULL)
+#endif
+
+static struct platform_device_id exynos4_tmu_driver_ids[] = {
+ {
+ .name = "exynos4-tmu",
+ .driver_data = EXYNOS4210_TMU_DRV_DATA,
+ },
+ { },
+};
+MODULE_DEVICE_TABLE(platform, exynos4_tmu_driver_ids);
+
+static inline struct exynos4_tmu_platform_data *exynos4_get_driver_data(
+ struct platform_device *pdev)
+{
+ return (struct exynos4_tmu_platform_data *)
+ platform_get_device_id(pdev)->driver_data;
+}
+
static int __devinit exynos4_tmu_probe(struct platform_device *pdev)
{
struct exynos4_tmu_data *data;
struct exynos4_tmu_platform_data *pdata = pdev->dev.platform_data;
int ret, i;

+ if (!pdata)
+ pdata = exynos4_get_driver_data(pdev);
+
if (!pdata) {
dev_err(&pdev->dev, "No platform init data supplied.\n");
return -ENODEV;
@@ -733,6 +779,7 @@ static struct platform_driver exynos4_tmu_driver = {
.remove = __devexit_p(exynos4_tmu_remove),
.suspend = exynos4_tmu_suspend,
.resume = exynos4_tmu_resume,
+ .id_table = exynos4_tmu_driver_ids,
};

module_platform_driver(exynos4_tmu_driver);
--
1.7.1

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Next message: Amit Daniel Kachhap: "[PATCH V2 5/6] thermal: exynos4: Register the tmu sensor with the kernel thermal layer"
Previous message: Amit Daniel Kachhap: "[PATCH V2 3/6] thermal: Add generic cpuhotplug cooling implementation"
In reply to: Amit Kachhap: "Re: [PATCH V2 3/6] thermal: Add generic cpuhotplug cooling implementation"
Next in thread: Amit Daniel Kachhap: "[PATCH V2 5/6] thermal: exynos4: Register the tmu sensor with the kernel thermal layer"
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