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    Subject[PATCH V2 6/6] ARM: exynos4: Add thermal sensor driver platform device support
    Date
    This patch adds necessary source definations needed for TMU driver and
    the platform device support.

    Signed-off-by: Amit Daniel Kachhap <amit.kachhap@linaro.org>
    ---
    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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