linux-kernel - [PATCH v3 6/6] ARM: exynos: Add thermal sensor driver platform data support

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Message-Id: <1336493898-7039-7-git-send-email-amit.kachhap@linaro.org>
Date:	Tue,  8 May 2012 21:48:18 +0530
From:	Amit Daniel Kachhap <amit.kachhap@...aro.org>
To:	akpm@...ux-foundation.org, linux-pm@...ts.linux-foundation.org
Cc:	durgadoss.r@...el.com, linux-acpi@...r.kernel.org, lenb@...nel.org,
	rui.zhang@...el.com, amit.kachhap@...aro.org,
	linaro-dev@...ts.linaro.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org, patches@...aro.org
Subject: [PATCH v3 6/6] ARM: exynos: Add thermal sensor driver platform data support

This patch adds necessary default platform data support needed for TMU driver.
This dt/non-dt values are tested for origen exynos4210 and smdk exynos5250 platforms.

Signed-off-by: Amit Daniel Kachhap <amit.kachhap@...aro.org>
---
 drivers/thermal/exynos_thermal.c |  107 +++++++++++++++++++++++++++++++++++++-
 1 files changed, 106 insertions(+), 1 deletions(-)

diff --git a/drivers/thermal/exynos_thermal.c b/drivers/thermal/exynos_thermal.c
index f818432..3471d9d 100644
--- a/drivers/thermal/exynos_thermal.c
+++ b/drivers/thermal/exynos_thermal.c
@@ -646,14 +646,117 @@ static irqreturn_t exynos_tmu_irq(int irq, void *id)
 static struct thermal_sensor_conf exynos_sensor_conf = {
 	.name			= "exynos-therm",
 	.read_temperature	= (int (*)(void *))exynos_tmu_read,
+};
+
+#if defined(CONFIG_CPU_EXYNOS4210)
+static struct exynos_tmu_platform_data exynos4_default_tmu_data = {
+	.threshold = 80,
+	.trigger_levels[0] = 5,
+	.trigger_levels[1] = 20,
+	.trigger_levels[2] = 30,
+	.trigger_level0_en = 1,
+	.trigger_level1_en = 1,
+	.trigger_level2_en = 1,
+	.trigger_level3_en = 0,
+	.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,
+	.type = SOC_ARCH_EXYNOS4,
+};
+#define EXYNOS4_TMU_DRV_DATA ((kernel_ulong_t)&exynos4_default_tmu_data)
+#else
+#define EXYNOS4_TMU_DRV_DATA ((kernel_ulong_t)NULL)
+#endif
+
+#if defined(CONFIG_SOC_EXYNOS5250)
+static struct exynos_tmu_platform_data exynos5_default_tmu_data = {
+	.trigger_levels[0] = 85,
+	.trigger_levels[1] = 103,
+	.trigger_levels[2] = 110,
+	.trigger_level0_en = 1,
+	.trigger_level1_en = 1,
+	.trigger_level2_en = 1,
+	.trigger_level3_en = 0,
+	.gain = 8,
+	.reference_voltage = 16,
+	.noise_cancel_mode = 4,
+	.cal_type = TYPE_ONE_POINT_TRIMMING,
+	.efuse_value = 55,
+	.freq_tab[0] = {
+		.freq_clip_max = 800 * 1000,
+	},
+	.freq_tab[1] = {
+		.freq_clip_max = 200 * 1000,
+	},
+	.freq_tab_count = 2,
+	.type = SOC_ARCH_EXYNOS5,
+};
+#define EXYNOS5_TMU_DRV_DATA ((kernel_ulong_t)&exynos5_default_tmu_data)
+#else
+#define EXYNOS5_TMU_DRV_DATA ((kernel_ulong_t)NULL)
+#endif
+
+#ifdef CONFIG_OF
+static const struct of_device_id exynos_tmu_match[] = {
+	{
+		.compatible = "samsung,exynos4-tmu",
+		.data = (void *)EXYNOS4_TMU_DRV_DATA,
+	},
+	{
+		.compatible = "samsung,exynos5-tmu",
+		.data = (void *)EXYNOS5_TMU_DRV_DATA,
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, exynos_tmu_match);
+#else
+#define  exynos_tmu_match NULL
+#endif
+
+static struct platform_device_id exynos_tmu_driver_ids[] = {
+	{
+		.name		= "exynos4-tmu",
+		.driver_data    = EXYNOS4_TMU_DRV_DATA,
+	},
+	{
+		.name		= "exynos5-tmu",
+		.driver_data    = EXYNOS5_TMU_DRV_DATA,
+	},
+	{ },
+};
+MODULE_DEVICE_TABLE(platform, exynos4_tmu_driver_ids);
+
+static inline struct  exynos_tmu_platform_data *exynos_get_driver_data(
+			struct platform_device *pdev)
+{
+#ifdef CONFIG_OF
+	if (pdev->dev.of_node) {
+		const struct of_device_id *match;
+		match = of_match_node(exynos_tmu_match, pdev->dev.of_node);
+		if (!match)
+			return NULL;
+		return (struct exynos_tmu_platform_data *) match->data;
+	}
+#endif
+	return (struct exynos_tmu_platform_data *)
+			platform_get_device_id(pdev)->driver_data;
 }
-;
 static int __devinit exynos_tmu_probe(struct platform_device *pdev)
 {
 	struct exynos_tmu_data *data;
 	struct exynos_tmu_platform_data *pdata = pdev->dev.platform_data;
 	int ret, i;
 
+	if (!pdata)
+		pdata = exynos_get_driver_data(pdev);
+
 	if (!pdata) {
 		dev_err(&pdev->dev, "No platform init data supplied.\n");
 		return -ENODEV;
@@ -813,11 +916,13 @@ static struct platform_driver exynos_tmu_driver = {
 	.driver = {
 		.name   = "exynos-tmu",
 		.owner  = THIS_MODULE,
+		.of_match_table = exynos_tmu_match,
 	},
 	.probe = exynos_tmu_probe,
 	.remove	= __devexit_p(exynos_tmu_remove),
 	.suspend = exynos_tmu_suspend,
 	.resume = exynos_tmu_resume,
+	.id_table = exynos_tmu_driver_ids,
 };
 
 module_platform_driver(exynos_tmu_driver);
-- 
1.7.1

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