arm: tegra: enterprise: EDP support

Added EDP support for Enterprise board via ext temp sensor nct1008

Bug 824621

Original-Change-Id: I476b9ad2cb46620d4775e6ee6e102b45f2b4dc27
Reviewed-on: http://git-master/r/43144
Reviewed-by: Varun Colbert <vcolbert@nvidia.com>
Tested-by: Varun Colbert <vcolbert@nvidia.com>

Rebase-Id: Rd0a03e8e8786fc76dd57149d9df315d084072cae

5 files changed, 84 insertions, 36 deletions

diff --git a/arch/arm/mach-tegra/board-enterprise-power.c b/arch/arm/mach-tegra/board-enterprise-power.c
index 4ab94ac48d11..52ef8fc822e6 100644
--- a/arch/arm/mach-tegra/board-enterprise-power.c
+++ b/arch/arm/mach-tegra/board-enterprise-power.c
@@ -28,6 +28,7 @@
 #include <linux/gpio.h>
 #include <linux/io.h>
 
+#include <mach/edp.h>
 #include <mach/iomap.h>
 #include <mach/irqs.h>
 #include <mach/pinmux.h>
@@ -445,3 +446,12 @@ int __init enterprise_suspend_init(void)
 	tegra_init_suspend(&enterprise_suspend_data);
 	return 0;
 }
+
+#ifdef CONFIG_TEGRA_EDP_LIMITS
+
+int __init enterprise_edp_init(void)
+{
+	tegra_init_cpu_edp_limits(2500); /* 2.5A regulator */
+	return 0;
+}
+#endif
diff --git a/arch/arm/mach-tegra/board-enterprise-sensors.c b/arch/arm/mach-tegra/board-enterprise-sensors.c
index 1c3950fd736e..78fce61d1cd1 100644
--- a/arch/arm/mach-tegra/board-enterprise-sensors.c
+++ b/arch/arm/mach-tegra/board-enterprise-sensors.c
@@ -28,6 +28,7 @@
 #include <media/ar0832_main.h>
 #include <media/tps61050.h>
 #include <media/ov9726.h>
+#include <mach/edp.h>
 #include "cpu-tegra.h"
 #include "gpio-names.h"
 #include "board-enterprise.h"
@@ -36,11 +37,15 @@ static struct nct1008_platform_data enterprise_nct1008_pdata = {
 	.supported_hwrev = true,
 	.ext_range = true,
 	.conv_rate = 0x08,
-	.offset = 0,
+/*
+ * BugID 844025 requires 11C guardband (9.7C for hotspot offset + 1.5C
+ * for sensor accuracy). FIXME: Move sensor accuracy to sensor driver.
+ */
+	.offset = 11,
 	.hysteresis = 5,
-	.shutdown_ext_limit = 75,
-	.shutdown_local_limit = 75,
-	.throttling_ext_limit = 90,
+	.shutdown_ext_limit = 90,
+	.shutdown_local_limit = 90,
+	.throttling_ext_limit = 75,
 	.alarm_fn = tegra_throttling_enable,
 };
 
@@ -55,6 +60,12 @@ static struct i2c_board_info enterprise_i2c4_nct1008_board_info[] = {
 static void enterprise_nct1008_init(void)
 {
 	int ret;
+#ifdef CONFIG_TEGRA_EDP_LIMITS
+	const struct tegra_edp_limits *z;
+	int zones_sz;
+	int i;
+	bool throttle_ok = false;
+#endif
 
 	tegra_gpio_enable(TEGRA_GPIO_PH7);
 	ret = gpio_request(TEGRA_GPIO_PH7, "temp_alert");
@@ -72,6 +83,27 @@ static void enterprise_nct1008_init(void)
 
 	i2c_register_board_info(4, enterprise_i2c4_nct1008_board_info,
 				ARRAY_SIZE(enterprise_i2c4_nct1008_board_info));
+#ifdef CONFIG_TEGRA_EDP_LIMITS
+	tegra_get_cpu_edp_limits(&z, &zones_sz);
+	zones_sz = min(zones_sz, MAX_ZONES);
+	for (i = 0; i < zones_sz; i++) {
+		enterprise_nct1008_pdata.thermal_zones[i] = z[i].temperature;
+		if (enterprise_nct1008_pdata.thermal_zones[i] ==
+		    enterprise_nct1008_pdata.throttling_ext_limit) {
+			throttle_ok = true;
+		}
+	}
+
+	if (throttle_ok != true)
+		pr_warn("%s: WARNING! Throttling limit %dC would be inaccurate"
+			" as it is NOT one of the EDP points\n",
+			__func__, enterprise_nct1008_pdata.throttling_ext_limit);
+	else
+		pr_info("%s: Throttling limit %dC OK\n",
+			__func__, enterprise_nct1008_pdata.throttling_ext_limit);
+
+	enterprise_nct1008_pdata.thermal_zones_sz = zones_sz;
+#endif
 }
 
 #define SENSOR_MPU_NAME "mpu3050"
diff --git a/arch/arm/mach-tegra/board-enterprise.c b/arch/arm/mach-tegra/board-enterprise.c
index 1b6171eeae1a..90677aef934a 100644
--- a/arch/arm/mach-tegra/board-enterprise.c
+++ b/arch/arm/mach-tegra/board-enterprise.c
@@ -481,6 +481,9 @@ static void __init tegra_enterprise_init(void)
 	enterprise_regulator_init();
 	enterprise_sdhci_init();
 	enterprise_usb_init();
+#ifdef CONFIG_TEGRA_EDP_LIMITS
+	enterprise_edp_init();
+#endif
 	/* enterprise_kbc_init(); */
 	enterprise_gps_init();
 	enterprise_baseband_init();
diff --git a/arch/arm/mach-tegra/board-enterprise.h b/arch/arm/mach-tegra/board-enterprise.h
index 334d0c98de01..6d82274b8f41 100644
--- a/arch/arm/mach-tegra/board-enterprise.h
+++ b/arch/arm/mach-tegra/board-enterprise.h
@@ -36,6 +36,7 @@ int enterprise_emc_init(void);
 int enterprise_regulator_init(void);
 int enterprise_modem_init(void);
 int enterprise_suspend_init(void);
+int enterprise_edp_init(void);
 
 /* Touchscreen GPIO addresses   */
 #ifdef CONFIG_TOUCHSCREEN_ATMEL_MT_T9
diff --git a/arch/arm/mach-tegra/edp.c b/arch/arm/mach-tegra/edp.c
index 9d935292841d..b86308ded50a 100644
--- a/arch/arm/mach-tegra/edp.c
+++ b/arch/arm/mach-tegra/edp.c
@@ -67,38 +67,40 @@ static char __initdata tegra_edp_map[] = {
 	0x78, 0x78, 0x69, 0x01, 0x1e, 0x3c, 0x8c, 0x78,
 	0x78, 0x64, 0x01, 0x1e, 0x4b, 0x8c, 0x78, 0x6e,
 	0x5a, 0x01, 0x1e, 0x5a, 0x8c, 0x78, 0x64, 0x5a,
-	0x01, 0x19, 0x2d, 0x8c, 0x78, 0x6e, 0x5a, 0x01,
-	0x19, 0x3c, 0x8c, 0x78, 0x69, 0x55, 0x01, 0x19,
-	0x4b, 0x8c, 0x78, 0x5f, 0x4b, 0x01, 0x19, 0x5a,
-	0x8c, 0x73, 0x5a, 0x3c, 0x02, 0x3d, 0x2d, 0x8c,
-	0x82, 0x82, 0x82, 0x02, 0x3d, 0x3c, 0x8c, 0x82,
-	0x82, 0x82, 0x02, 0x3d, 0x4b, 0x8c, 0x82, 0x82,
-	0x82, 0x02, 0x3d, 0x5a, 0x8c, 0x82, 0x82, 0x82,
-	0x02, 0x32, 0x2d, 0x8c, 0x82, 0x82, 0x82, 0x02,
-	0x32, 0x3c, 0x8c, 0x82, 0x82, 0x82, 0x02, 0x32,
-	0x4b, 0x8c, 0x82, 0x82, 0x78, 0x02, 0x32, 0x5a,
-	0x8c, 0x82, 0x82, 0x6e, 0x02, 0x28, 0x2d, 0x8c,
-	0x82, 0x82, 0x78, 0x02, 0x28, 0x3c, 0x8c, 0x82,
-	0x82, 0x73, 0x02, 0x28, 0x4b, 0x8c, 0x82, 0x78,
-	0x6e, 0x02, 0x28, 0x5a, 0x8c, 0x82, 0x73, 0x5f,
-	0x02, 0x23, 0x2d, 0x8c, 0x82, 0x82, 0x6e, 0x02,
-	0x23, 0x3c, 0x8c, 0x82, 0x78, 0x69, 0x02, 0x23,
-	0x4b, 0x8c, 0x82, 0x73, 0x5f, 0x02, 0x23, 0x5a,
-	0x8c, 0x82, 0x69, 0x55, 0x03, 0x3d, 0x2d, 0x8c,
-	0x82, 0x82, 0x82, 0x03, 0x3d, 0x3c, 0x8c, 0x82,
-	0x82, 0x82, 0x03, 0x3d, 0x4b, 0x8c, 0x82, 0x82,
-	0x82, 0x03, 0x3d, 0x5a, 0x8c, 0x82, 0x82, 0x82,
-	0x03, 0x32, 0x2d, 0x8c, 0x82, 0x82, 0x82, 0x03,
-	0x32, 0x3c, 0x8c, 0x82, 0x82, 0x82, 0x03, 0x32,
-	0x4b, 0x8c, 0x82, 0x82, 0x73, 0x03, 0x32, 0x5a,
-	0x8c, 0x82, 0x82, 0x6e, 0x03, 0x28, 0x2d, 0x8c,
-	0x82, 0x82, 0x78, 0x03, 0x28, 0x3c, 0x8c, 0x82,
-	0x82, 0x73, 0x03, 0x28, 0x4b, 0x8c, 0x82, 0x7d,
-	0x6e, 0x03, 0x28, 0x5a, 0x8c, 0x82, 0x73, 0x5f,
-	0x03, 0x23, 0x2d, 0x8c, 0x82, 0x82, 0x6e, 0x03,
-	0x23, 0x3c, 0x8c, 0x82, 0x78, 0x6e, 0x03, 0x23,
-	0x4b, 0x8c, 0x82, 0x78, 0x5f, 0x03, 0x23, 0x5a,
-	0x8c, 0x82, 0x6e, 0x5a,
+	0x01, 0x19, 0x23, 0x82, 0x78, 0x70, 0x5c, 0x01,
+	0x19, 0x32, 0x82, 0x78, 0x6c, 0x56, 0x01, 0x19,
+	0x3c, 0x82, 0x78, 0x66, 0x52, 0x01, 0x19, 0x46,
+	0x82, 0x78, 0x60, 0x4e, 0x01, 0x19, 0x50, 0x82,
+	0x78, 0x5c, 0x4a, 0x01, 0x19, 0x5a, 0x82, 0x72,
+	0x58, 0x40, 0x02, 0x3d, 0x2d, 0x8c, 0x82, 0x82,
+	0x82, 0x02, 0x3d, 0x3c, 0x8c, 0x82, 0x82, 0x82,
+	0x02, 0x3d, 0x4b, 0x8c, 0x82, 0x82, 0x82, 0x02,
+	0x3d, 0x5a, 0x8c, 0x82, 0x82, 0x82, 0x02, 0x32,
+	0x2d, 0x8c, 0x82, 0x82, 0x82, 0x02, 0x32, 0x3c,
+	0x8c, 0x82, 0x82, 0x82, 0x02, 0x32, 0x4b, 0x8c,
+	0x82, 0x82, 0x78, 0x02, 0x32, 0x5a, 0x8c, 0x82,
+	0x82, 0x6e, 0x02, 0x28, 0x2d, 0x8c, 0x82, 0x82,
+	0x78, 0x02, 0x28, 0x3c, 0x8c, 0x82, 0x82, 0x73,
+	0x02, 0x28, 0x4b, 0x8c, 0x82, 0x78, 0x6e, 0x02,
+	0x28, 0x5a, 0x8c, 0x82, 0x73, 0x5f, 0x02, 0x23,
+	0x2d, 0x8c, 0x82, 0x82, 0x6e, 0x02, 0x23, 0x3c,
+	0x8c, 0x82, 0x78, 0x69, 0x02, 0x23, 0x4b, 0x8c,
+	0x82, 0x73, 0x5f, 0x02, 0x23, 0x5a, 0x8c, 0x82,
+	0x69, 0x55, 0x03, 0x3d, 0x2d, 0x8c, 0x82, 0x82,
+	0x82, 0x03, 0x3d, 0x3c, 0x8c, 0x82, 0x82, 0x82,
+	0x03, 0x3d, 0x4b, 0x8c, 0x82, 0x82, 0x82, 0x03,
+	0x3d, 0x5a, 0x8c, 0x82, 0x82, 0x82, 0x03, 0x32,
+	0x2d, 0x8c, 0x82, 0x82, 0x82, 0x03, 0x32, 0x3c,
+	0x8c, 0x82, 0x82, 0x82, 0x03, 0x32, 0x4b, 0x8c,
+	0x82, 0x82, 0x73, 0x03, 0x32, 0x5a, 0x8c, 0x82,
+	0x82, 0x6e, 0x03, 0x28, 0x2d, 0x8c, 0x82, 0x82,
+	0x78, 0x03, 0x28, 0x3c, 0x8c, 0x82, 0x82, 0x73,
+	0x03, 0x28, 0x4b, 0x8c, 0x82, 0x7d, 0x6e, 0x03,
+	0x28, 0x5a, 0x8c, 0x82, 0x73, 0x5f, 0x03, 0x23,
+	0x2d, 0x8c, 0x82, 0x82, 0x6e, 0x03, 0x23, 0x3c,
+	0x8c, 0x82, 0x78, 0x6e, 0x03, 0x23, 0x4b, 0x8c,
+	0x82, 0x78, 0x5f, 0x03, 0x23, 0x5a, 0x8c, 0x82,
+	0x6e, 0x5a,
 };