gpu: mali: Add devfreq platform support

This patch adds the devfreq platform support for Origen board.

Signed-off-by: Vikas C Sajjan <vikas.sajjan@linaro.org>
Signed-off-by: Tushar Behera <tushar.behera@linaro.org>

1 files changed, 85 insertions, 31 deletions

diff --git a/drivers/gpu/arm/mali/platform/mali_platform.h b/drivers/gpu/arm/mali/platform/mali_platform.h
index f1bb2b5c7ad4..3d2a4ee56cb3 100644
--- a/drivers/gpu/arm/mali/platform/mali_platform.h
+++ b/drivers/gpu/arm/mali/platform/mali_platform.h
@@ -1,25 +1,31 @@
 /*
  * Copyright (C) 2010-2012 ARM Limited. All rights reserved.
  * 
- * This program is free software and is provided to you under the terms of the GNU General Public License version 2
- * as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence.
+ * This program is free software and is provided to you under the terms of
+ * the GNU General Public License version 2 as published by the Free Software
+ * Foundation, and any use by you of this program is subject to the terms of
+ * such GNU licence.
  * 
- * A copy of the licence is included with the program, and can also be obtained from Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ * A copy of the licence is included with the program, and can also be
+ * obtained from Free Software Foundation, Inc., 51
+ * Franklin Street Fifth Floor, Boston, MA  02110-1301, USA.
  */
-
-/**
- * @file mali_platform.h
- * Platform specific Mali driver functions
- */
-
 #ifndef __MALI_PLATFORM_H__
 #define __MALI_PLATFORM_H__
 
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/consumer.h>
+#include <linux/regulator/driver.h>
+
+
 #include "mali_osk.h"
 
 #if !USING_MALI_PMM
-/* @brief System power up/down cores that can be passed into mali_platform_powerdown/up() */
+/* @brief System power up/down cores that can be passed into
+ * mali_platform_powerdown/up()
+ */
 #define MALI_PLATFORM_SYSTEM  0
 #endif
 
@@ -27,8 +33,14 @@
 extern "C" {
 #endif
 
-/** @brief description of power change reasons
- */
+#define MPLLCLK_NAME            "mout_mpll"
+#define GPUMOUT0CLK_NAME        "mout_g3d0"
+#define GPUCLK_NAME             "sclk_g3d"
+#define CLK_DIV_STAT_G3D        0x1003C62C
+#define CLK_DESC                "clk-divider-status"
+
+extern struct platform_device mali_gpu_device;
+/* @brief description of power change reasons */
 typedef enum mali_power_mode_tag
 {
 	MALI_POWER_MODE_ON,
@@ -36,11 +48,45 @@ typedef enum mali_power_mode_tag
 	MALI_POWER_MODE_DEEP_SLEEP,
 } mali_power_mode;
 
+struct regulator {
+	struct device *dev;
+	struct list_head list;
+	unsigned int always_on:1;
+	unsigned int bypass:1;
+	int uA_load;
+	int min_uV;
+	int max_uV;
+	char *supply_name;
+	struct device_attribute dev_attr;
+	struct regulator_dev *rdev;
+	struct dentry *debugfs;
+};
+
+int mali_regulator_get_usecount(void);
+
+void mali_regulator_disable(void);
+
+void mali_regulator_enable(void);
+
+void mali_regulator_set_voltage(int min_uV, int max_uV);
+
+mali_bool mali_clk_set_rate(unsigned int clk, unsigned int mhz);
+
+unsigned long mali_clk_get_rate(void);
+
+void mali_clk_put(mali_bool binc_mali_clock);
+
+mali_bool init_mali_regulator(void);
+
+mali_bool deinit_mali_regulator(void);
+
+
 /** @brief Platform specific setup and initialisation of MALI
  *
  * This is called from the entrypoint of the driver to initialize the platform
  *
- * @return _MALI_OSK_ERR_OK on success otherwise, a suitable _mali_osk_errcode_t error.
+ * @return _MALI_OSK_ERR_OK on success otherwise, a suitable
+ * _mali_osk_errcode_t error.
  */
 _mali_osk_errcode_t mali_platform_init(void);
 
@@ -48,48 +94,56 @@ _mali_osk_errcode_t mali_platform_init(void);
  *
  * This is called on the exit of the driver to terminate the platform
  *
- * @return _MALI_OSK_ERR_OK on success otherwise, a suitable _mali_osk_errcode_t error.
+ * @return _MALI_OSK_ERR_OK on success otherwise, a suitable
+ * _mali_osk_errcode_t error.
  */
 _mali_osk_errcode_t mali_platform_deinit(void);
 
 /** @brief Platform specific powerdown sequence of MALI
  *
  * Call as part of platform init if there is no PMM support, else the
- * PMM will call it. 
+ * PMM will call it.
  * There are three power modes defined:
  *  1) MALI_POWER_MODE_ON
  *  2) MALI_POWER_MODE_LIGHT_SLEEP
  *  3) MALI_POWER_MODE_DEEP_SLEEP
- * MALI power management module transitions to MALI_POWER_MODE_LIGHT_SLEEP mode when MALI is idle
- * for idle timer (software timer defined in mali_pmm_policy_jobcontrol.h) duration, MALI transitions
- * to MALI_POWER_MODE_LIGHT_SLEEP mode during timeout if there are no more jobs queued.
- * MALI power management module transitions to MALI_POWER_MODE_DEEP_SLEEP mode when OS does system power
- * off. 
- * Customer has to add power down code when MALI transitions to MALI_POWER_MODE_LIGHT_SLEEP or MALI_POWER_MODE_DEEP_SLEEP
+ * MALI power management module transitions to MALI_POWER_MODE_LIGHT_SLEEP mode
+ * when MALI is idle for idle timer (software timer defined in
+ * mali_pmm_policy_jobcontrol.h) duration, MALI transitions to
+ * MALI_POWER_MODE_LIGHT_SLEEP mode during timeout if there are no more
+ * jobs queued.
+ * MALI power management module transitions to MALI_POWER_MODE_DEEP_SLEEP mode
+ * when OS does system power off.
+ * Customer has to add power down code when MALI transitions to
+ * MALI_POWER_MODE_LIGHT_SLEEP or MALI_POWER_MODE_DEEP_SLEEP
  * mode.
- * MALI_POWER_MODE_ON mode is entered when the MALI is to powered up. Some customers want to control voltage regulators during
- * the whole system powers on/off. Customer can track in this function whether the MALI is powered up from
- * MALI_POWER_MODE_LIGHT_SLEEP or MALI_POWER_MODE_DEEP_SLEEP mode and manage the voltage regulators as well.
+ * MALI_POWER_MODE_ON mode is entered when the MALI is to powered up.
+ * Some customers want to control voltage regulators during the whole system
+ * powers on/off. Customer can track in this function whether the MALI is
+ * powered up from MALI_POWER_MODE_LIGHT_SLEEP or MALI_POWER_MODE_DEEP_SLEEP
+ * mode and manage the voltage regulators as well.
  * @param power_mode defines the power modes
- * @return _MALI_OSK_ERR_OK on success otherwise, a suitable _mali_osk_errcode_t error.
+ * @return _MALI_OSK_ERR_OK on success otherwise, a suitable
+ * _mali_osk_errcode_t error.
  */
 _mali_osk_errcode_t mali_platform_power_mode_change(mali_power_mode power_mode);
 
-
 /** @brief Platform specific handling of GPU utilization data
  *
  * When GPU utilization data is enabled, this function will be
  * periodically called.
  *
- * @param utilization The workload utilization of the Mali GPU. 0 = no utilization, 256 = full utilization.
+ * @param utilization The workload utilization of the Mali GPU.
+ * 0 = no utilization, 256 = full utilization.
  */
 void mali_gpu_utilization_handler(u32 utilization);
 
 /** @brief Setting the power domain of MALI
  *
- * This function sets the power domain of MALI if Linux run time power management is enabled
- *
- * @param dev Reference to struct platform_device (defined in linux) used by MALI GPU
+ * This function sets the power domain of MALI if Linux run time power
+ * management is enabled
+ * @param dev Reference to struct platform_device (defined in linux) used by
+ * MALI GPU
  */
 void set_mali_parent_power_domain(void* dev);