diff options
Diffstat (limited to 'target/linux/brcm2708/patches-3.10/010-bcm2835-thermal-driver.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-3.10/010-bcm2835-thermal-driver.patch | 209 |
1 files changed, 0 insertions, 209 deletions
diff --git a/target/linux/brcm2708/patches-3.10/010-bcm2835-thermal-driver.patch b/target/linux/brcm2708/patches-3.10/010-bcm2835-thermal-driver.patch deleted file mode 100644 index 7e69e8a..0000000 --- a/target/linux/brcm2708/patches-3.10/010-bcm2835-thermal-driver.patch +++ /dev/null @@ -1,209 +0,0 @@ ---- /dev/null -+++ b/drivers/thermal/bcm2835-thermal.c -@@ -0,0 +1,184 @@ -+/***************************************************************************** -+* Copyright 2011 Broadcom Corporation. All rights reserved. -+* -+* Unless you and Broadcom execute a separate written software license -+* agreement governing use of this software, this software is licensed to you -+* under the terms of the GNU General Public License version 2, available at -+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL"). -+* -+* Notwithstanding the above, under no circumstances may you combine this -+* software in any way with any other Broadcom software provided under a -+* license other than the GPL, without Broadcom's express prior written -+* consent. -+*****************************************************************************/ -+ -+#include <linux/kernel.h> -+#include <linux/module.h> -+#include <linux/init.h> -+#include <linux/platform_device.h> -+#include <linux/slab.h> -+#include <linux/sysfs.h> -+#include <mach/vcio.h> -+#include <linux/thermal.h> -+ -+ -+/* --- DEFINITIONS --- */ -+#define MODULE_NAME "bcm2835_thermal" -+ -+/*#define THERMAL_DEBUG_ENABLE*/ -+ -+#ifdef THERMAL_DEBUG_ENABLE -+#define print_debug(fmt,...) printk(KERN_INFO "%s:%s:%d: "fmt"\n", MODULE_NAME, __func__, __LINE__, ##__VA_ARGS__) -+#else -+#define print_debug(fmt,...) -+#endif -+#define print_err(fmt,...) printk(KERN_ERR "%s:%s:%d: "fmt"\n", MODULE_NAME, __func__,__LINE__, ##__VA_ARGS__) -+ -+#define VC_TAG_GET_TEMP 0x00030006 -+#define VC_TAG_GET_MAX_TEMP 0x0003000A -+ -+typedef enum { -+ TEMP, -+ MAX_TEMP, -+} temp_type; -+ -+/* --- STRUCTS --- */ -+/* tag part of the message */ -+struct vc_msg_tag { -+ uint32_t tag_id; /* the tag ID for the temperature */ -+ uint32_t buffer_size; /* size of the buffer (should be 8) */ -+ uint32_t request_code; /* identifies message as a request (should be 0) */ -+ uint32_t id; /* extra ID field (should be 0) */ -+ uint32_t val; /* returned value of the temperature */ -+}; -+ -+/* message structure to be sent to videocore */ -+struct vc_msg { -+ uint32_t msg_size; /* simply, sizeof(struct vc_msg) */ -+ uint32_t request_code; /* holds various information like the success and number of bytes returned (refer to mailboxes wiki) */ -+ struct vc_msg_tag tag; /* the tag structure above to make */ -+ uint32_t end_tag; /* an end identifier, should be set to NULL */ -+}; -+ -+struct bcm2835_thermal_data { -+ struct thermal_zone_device *thermal_dev; -+ struct vc_msg msg; -+}; -+ -+/* --- GLOBALS --- */ -+static struct bcm2835_thermal_data bcm2835_data; -+ -+/* Thermal Device Operations */ -+static struct thermal_zone_device_ops ops; -+ -+/* --- FUNCTIONS --- */ -+ -+static int bcm2835_get_temp_or_max(struct thermal_zone_device *thermal_dev, unsigned long *temp, unsigned tag_id) -+{ -+ int result = -1, retry = 3; -+ print_debug("IN"); -+ -+ *temp = 0; -+ while (result != 0 && retry-- > 0) { -+ /* wipe all previous message data */ -+ memset(&bcm2835_data.msg, 0, sizeof bcm2835_data.msg); -+ -+ /* prepare message */ -+ bcm2835_data.msg.msg_size = sizeof bcm2835_data.msg; -+ bcm2835_data.msg.tag.buffer_size = 8; -+ bcm2835_data.msg.tag.tag_id = tag_id; -+ -+ /* send the message */ -+ result = bcm_mailbox_property(&bcm2835_data.msg, sizeof bcm2835_data.msg); -+ print_debug("Got %stemperature as %u (%d,%x)\n", tag_id==VC_TAG_GET_MAX_TEMP ? "max ":"", (uint)bcm2835_data.msg.tag.val, result, bcm2835_data.msg.request_code); -+ if (!(bcm2835_data.msg.request_code & 0x80000000)) -+ result = -1; -+ } -+ -+ /* check if it was all ok and return the rate in milli degrees C */ -+ if (result == 0) -+ *temp = (uint)bcm2835_data.msg.tag.val; -+ else -+ print_err("Failed to get temperature! (%x:%d)\n", tag_id, result); -+ print_debug("OUT"); -+ return result; -+} -+ -+static int bcm2835_get_temp(struct thermal_zone_device *thermal_dev, unsigned long *temp) -+{ -+ return bcm2835_get_temp_or_max(thermal_dev, temp, VC_TAG_GET_TEMP); -+} -+ -+static int bcm2835_get_max_temp(struct thermal_zone_device *thermal_dev, int trip_num, unsigned long *temp) -+{ -+ return bcm2835_get_temp_or_max(thermal_dev, temp, VC_TAG_GET_MAX_TEMP); -+} -+ -+static int bcm2835_get_trip_type(struct thermal_zone_device * thermal_dev, int trip_num, enum thermal_trip_type *trip_type) -+{ -+ *trip_type = THERMAL_TRIP_HOT; -+ return 0; -+} -+ -+ -+static int bcm2835_get_mode(struct thermal_zone_device *thermal_dev, enum thermal_device_mode *dev_mode) -+{ -+ *dev_mode = THERMAL_DEVICE_ENABLED; -+ return 0; -+} -+ -+ -+static int bcm2835_thermal_probe(struct platform_device *pdev) -+{ -+ print_debug("IN"); -+ print_debug("THERMAL Driver has been probed!"); -+ -+ /* check that the device isn't null!*/ -+ if(pdev == NULL) -+ { -+ print_debug("Platform device is empty!"); -+ return -ENODEV; -+ } -+ -+ if(!(bcm2835_data.thermal_dev = thermal_zone_device_register("bcm2835_thermal", 1, 0, NULL, &ops, NULL, 0, 0))) -+ { -+ print_debug("Unable to register the thermal device!"); -+ return -EFAULT; -+ } -+ return 0; -+} -+ -+ -+static int bcm2835_thermal_remove(struct platform_device *pdev) -+{ -+ print_debug("IN"); -+ -+ thermal_zone_device_unregister(bcm2835_data.thermal_dev); -+ -+ print_debug("OUT"); -+ -+ return 0; -+} -+ -+static struct thermal_zone_device_ops ops = { -+ .get_temp = bcm2835_get_temp, -+ .get_trip_temp = bcm2835_get_max_temp, -+ .get_trip_type = bcm2835_get_trip_type, -+ .get_mode = bcm2835_get_mode, -+}; -+ -+/* Thermal Driver */ -+static struct platform_driver bcm2835_thermal_driver = { -+ .probe = bcm2835_thermal_probe, -+ .remove = bcm2835_thermal_remove, -+ .driver = { -+ .name = "bcm2835_thermal", -+ .owner = THIS_MODULE, -+ }, -+}; -+ -+MODULE_LICENSE("GPL"); -+MODULE_AUTHOR("Dorian Peake"); -+MODULE_DESCRIPTION("Thermal driver for bcm2835 chip"); -+ -+module_platform_driver(bcm2835_thermal_driver); ---- a/drivers/thermal/Kconfig -+++ b/drivers/thermal/Kconfig -@@ -169,4 +169,11 @@ config INTEL_POWERCLAMP - enforce idle time which results in more package C-state residency. The - user interface is exposed via generic thermal framework. - -+config THERMAL_BCM2835 -+ tristate "BCM2835 Thermal Driver" -+ help -+ This will enable temperature monitoring for the Broadcom BCM2835 -+ chip. If built as a module, it will be called 'bcm2835-thermal'. -+ - endif -+ ---- a/drivers/thermal/Makefile -+++ b/drivers/thermal/Makefile -@@ -23,4 +23,5 @@ obj-$(CONFIG_DB8500_THERMAL) += db8500_t - obj-$(CONFIG_ARMADA_THERMAL) += armada_thermal.o - obj-$(CONFIG_DB8500_CPUFREQ_COOLING) += db8500_cpufreq_cooling.o - obj-$(CONFIG_INTEL_POWERCLAMP) += intel_powerclamp.o -+obj-$(CONFIG_THERMAL_BCM2835) += bcm2835-thermal.o - |