bool "Qualcomm MSM"
select ARCH_REQUIRE_GPIOLIB
select CLKDEV_LOOKUP
+ select COMMON_CLK
select GENERIC_CLOCKEVENTS
- select HAVE_CLK
help
Support for Qualcomm MSM/QSD based systems. This runs on the
apps processor of the MSM/QSD and depends on a shared memory
obj-y += io.o timer.o
obj-y += clock.o
-obj-$(CONFIG_DEBUG_FS) += clock-debug.o
obj-$(CONFIG_MSM_VIC) += irq-vic.o
obj-$(CONFIG_MSM_IOMMU) += devices-iommu.o
+++ /dev/null
-/*
- * Copyright (C) 2007 Google, Inc.
- * Copyright (c) 2007-2010, Code Aurora Forum. All rights reserved.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/ctype.h>
-#include <linux/debugfs.h>
-#include <linux/clk.h>
-#include "clock.h"
-
-static int clock_debug_rate_set(void *data, u64 val)
-{
- struct clk *clock = data;
- int ret;
-
- ret = clk_set_rate(clock, val);
- if (ret != 0)
- printk(KERN_ERR "clk_set%s_rate failed (%d)\n",
- (clock->flags & CLK_MIN) ? "_min" : "", ret);
- return ret;
-}
-
-static int clock_debug_rate_get(void *data, u64 *val)
-{
- struct clk *clock = data;
- *val = clk_get_rate(clock);
- return 0;
-}
-
-DEFINE_SIMPLE_ATTRIBUTE(clock_rate_fops, clock_debug_rate_get,
- clock_debug_rate_set, "%llu\n");
-
-static int clock_debug_enable_set(void *data, u64 val)
-{
- struct clk *clock = data;
- int rc = 0;
-
- if (val)
- rc = clock->ops->enable(clock->id);
- else
- clock->ops->disable(clock->id);
-
- return rc;
-}
-
-static int clock_debug_enable_get(void *data, u64 *val)
-{
- struct clk *clock = data;
-
- *val = clock->ops->is_enabled(clock->id);
-
- return 0;
-}
-
-DEFINE_SIMPLE_ATTRIBUTE(clock_enable_fops, clock_debug_enable_get,
- clock_debug_enable_set, "%llu\n");
-
-static int clock_debug_local_get(void *data, u64 *val)
-{
- struct clk *clock = data;
-
- *val = clock->ops->is_local(clock->id);
-
- return 0;
-}
-
-DEFINE_SIMPLE_ATTRIBUTE(clock_local_fops, clock_debug_local_get,
- NULL, "%llu\n");
-
-static struct dentry *debugfs_base;
-
-int __init clock_debug_init(void)
-{
- debugfs_base = debugfs_create_dir("clk", NULL);
- if (!debugfs_base)
- return -ENOMEM;
- return 0;
-}
-
-int __init clock_debug_add(struct clk *clock)
-{
- char temp[50], *ptr;
- struct dentry *clk_dir;
-
- if (!debugfs_base)
- return -ENOMEM;
-
- strncpy(temp, clock->dbg_name, ARRAY_SIZE(temp)-1);
- for (ptr = temp; *ptr; ptr++)
- *ptr = tolower(*ptr);
-
- clk_dir = debugfs_create_dir(temp, debugfs_base);
- if (!clk_dir)
- return -ENOMEM;
-
- if (!debugfs_create_file("rate", S_IRUGO | S_IWUSR, clk_dir,
- clock, &clock_rate_fops))
- goto error;
-
- if (!debugfs_create_file("enable", S_IRUGO | S_IWUSR, clk_dir,
- clock, &clock_enable_fops))
- goto error;
-
- if (!debugfs_create_file("is_local", S_IRUGO, clk_dir, clock,
- &clock_local_fops))
- goto error;
- return 0;
-error:
- debugfs_remove_recursive(clk_dir);
- return -ENOMEM;
-}
/*
* Copyright (C) 2007 Google, Inc.
- * Copyright (c) 2007-2010, Code Aurora Forum. All rights reserved.
+ * Copyright (c) 2007-2012, The Linux Foundation. All rights reserved.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
*
*/
+#include <linux/kernel.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/module.h>
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
#include <mach/clk.h>
#include "clock.h"
#include "clock-pcom.h"
-/*
- * glue for the proc_comm interface
- */
-static int pc_clk_enable(unsigned id)
+struct clk_pcom {
+ unsigned id;
+ unsigned long flags;
+ struct msm_clk msm_clk;
+};
+
+static inline struct clk_pcom *to_clk_pcom(struct clk_hw *hw)
{
+ return container_of(to_msm_clk(hw), struct clk_pcom, msm_clk);
+}
+
+static int pc_clk_enable(struct clk_hw *hw)
+{
+ unsigned id = to_clk_pcom(hw)->id;
int rc = msm_proc_comm(PCOM_CLKCTL_RPC_ENABLE, &id, NULL);
if (rc < 0)
return rc;
return (int)id < 0 ? -EINVAL : 0;
}
-static void pc_clk_disable(unsigned id)
+static void pc_clk_disable(struct clk_hw *hw)
{
+ unsigned id = to_clk_pcom(hw)->id;
msm_proc_comm(PCOM_CLKCTL_RPC_DISABLE, &id, NULL);
}
-int pc_clk_reset(unsigned id, enum clk_reset_action action)
+static int pc_clk_reset(struct clk_hw *hw, enum clk_reset_action action)
{
int rc;
+ unsigned id = to_clk_pcom(hw)->id;
if (action == CLK_RESET_ASSERT)
rc = msm_proc_comm(PCOM_CLKCTL_RPC_RESET_ASSERT, &id, NULL);
return (int)id < 0 ? -EINVAL : 0;
}
-static int pc_clk_set_rate(unsigned id, unsigned rate)
+static int pc_clk_set_rate(struct clk_hw *hw, unsigned long new_rate,
+ unsigned long p_rate)
{
- /* The rate _might_ be rounded off to the nearest KHz value by the
+ struct clk_pcom *p = to_clk_pcom(hw);
+ unsigned id = p->id, rate = new_rate;
+ int rc;
+
+ /*
+ * The rate _might_ be rounded off to the nearest KHz value by the
* remote function. So a return value of 0 doesn't necessarily mean
* that the exact rate was set successfully.
*/
- int rc = msm_proc_comm(PCOM_CLKCTL_RPC_SET_RATE, &id, &rate);
- if (rc < 0)
- return rc;
- else
- return (int)id < 0 ? -EINVAL : 0;
-}
-
-static int pc_clk_set_min_rate(unsigned id, unsigned rate)
-{
- int rc = msm_proc_comm(PCOM_CLKCTL_RPC_MIN_RATE, &id, &rate);
- if (rc < 0)
- return rc;
+ if (p->flags & CLKFLAG_MIN)
+ rc = msm_proc_comm(PCOM_CLKCTL_RPC_MIN_RATE, &id, &rate);
else
- return (int)id < 0 ? -EINVAL : 0;
-}
-
-static int pc_clk_set_max_rate(unsigned id, unsigned rate)
-{
- int rc = msm_proc_comm(PCOM_CLKCTL_RPC_MAX_RATE, &id, &rate);
+ rc = msm_proc_comm(PCOM_CLKCTL_RPC_SET_RATE, &id, &rate);
if (rc < 0)
return rc;
else
return (int)id < 0 ? -EINVAL : 0;
}
-static unsigned pc_clk_get_rate(unsigned id)
+static unsigned long pc_clk_recalc_rate(struct clk_hw *hw, unsigned long p_rate)
{
+ unsigned id = to_clk_pcom(hw)->id;
if (msm_proc_comm(PCOM_CLKCTL_RPC_RATE, &id, NULL))
return 0;
else
return id;
}
-static unsigned pc_clk_is_enabled(unsigned id)
+static int pc_clk_is_enabled(struct clk_hw *hw)
{
+ unsigned id = to_clk_pcom(hw)->id;
if (msm_proc_comm(PCOM_CLKCTL_RPC_ENABLED, &id, NULL))
return 0;
else
return id;
}
-static long pc_clk_round_rate(unsigned id, unsigned rate)
+static long pc_clk_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *p_rate)
{
-
/* Not really supported; pc_clk_set_rate() does rounding on it's own. */
return rate;
}
-static bool pc_clk_is_local(unsigned id)
-{
- return false;
-}
-
-struct clk_ops clk_ops_pcom = {
+static struct clk_ops clk_ops_pcom = {
.enable = pc_clk_enable,
.disable = pc_clk_disable,
- .auto_off = pc_clk_disable,
- .reset = pc_clk_reset,
.set_rate = pc_clk_set_rate,
- .set_min_rate = pc_clk_set_min_rate,
- .set_max_rate = pc_clk_set_max_rate,
- .get_rate = pc_clk_get_rate,
+ .recalc_rate = pc_clk_recalc_rate,
.is_enabled = pc_clk_is_enabled,
.round_rate = pc_clk_round_rate,
- .is_local = pc_clk_is_local,
};
static int msm_clock_pcom_probe(struct platform_device *pdev)
{
const struct pcom_clk_pdata *pdata = pdev->dev.platform_data;
- msm_clock_init(pdata->lookup, pdata->num_lookups);
+ int i, ret;
+
+ for (i = 0; i < pdata->num_lookups; i++) {
+ const struct clk_pcom_desc *desc = &pdata->lookup[i];
+ struct clk *c;
+ struct clk_pcom *p;
+ struct clk_hw *hw;
+ struct clk_init_data init;
+
+ p = devm_kzalloc(&pdev->dev, sizeof(*p), GFP_KERNEL);
+ if (!p)
+ return -ENOMEM;
+
+ p->id = desc->id;
+ p->flags = desc->flags;
+ p->msm_clk.reset = pc_clk_reset;
+
+ hw = &p->msm_clk.hw;
+ hw->init = &init;
+
+ init.name = desc->name;
+ init.ops = &clk_ops_pcom;
+ init.num_parents = 0;
+ init.flags = CLK_IS_ROOT;
+
+ if (!(p->flags & CLKFLAG_AUTO_OFF))
+ init.flags |= CLK_IGNORE_UNUSED;
+
+ c = devm_clk_register(&pdev->dev, hw);
+ ret = clk_register_clkdev(c, desc->con, desc->dev);
+ if (ret)
+ return ret;
+ }
+
return 0;
}
-/* Copyright (c) 2009, Code Aurora Forum. All rights reserved.
+/*
+ * Copyright (c) 2009-2012, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
#define P_NR_CLKS 102
-struct clk_ops;
-extern struct clk_ops clk_ops_pcom;
+struct clk_pcom_desc {
+ unsigned id;
+ const char *name;
+ const char *con;
+ const char *dev;
+ unsigned long flags;
+};
struct pcom_clk_pdata {
- struct clk_lookup *lookup;
+ struct clk_pcom_desc *lookup;
u32 num_lookups;
};
-int pc_clk_reset(unsigned id, enum clk_reset_action action);
-
#define CLK_PCOM(clk_name, clk_id, clk_dev, clk_flags) { \
- .con_id = clk_name, \
- .dev_id = clk_dev, \
- .clk = &(struct clk){ \
- .id = P_##clk_id, \
- .remote_id = P_##clk_id, \
- .ops = &clk_ops_pcom, \
- .flags = clk_flags, \
- .dbg_name = #clk_id, \
- }, \
+ .id = P_##clk_id, \
+ .name = #clk_id, \
+ .con = clk_name, \
+ .dev = clk_dev, \
+ .flags = clk_flags, \
}
#endif
/* arch/arm/mach-msm/clock.c
*
* Copyright (C) 2007 Google, Inc.
- * Copyright (c) 2007-2010, Code Aurora Forum. All rights reserved.
+ * Copyright (c) 2007-2012, The Linux Foundation. All rights reserved.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
*
*/
-#include <linux/kernel.h>
-#include <linux/list.h>
-#include <linux/err.h>
-#include <linux/spinlock.h>
-#include <linux/pm_qos.h>
-#include <linux/mutex.h>
-#include <linux/clk.h>
-#include <linux/string.h>
+#include <linux/clk-provider.h>
#include <linux/module.h>
-#include <linux/clkdev.h>
#include "clock.h"
-static DEFINE_MUTEX(clocks_mutex);
-static DEFINE_SPINLOCK(clocks_lock);
-static LIST_HEAD(clocks);
-
-/*
- * Standard clock functions defined in include/linux/clk.h
- */
-int clk_enable(struct clk *clk)
-{
- unsigned long flags;
- spin_lock_irqsave(&clocks_lock, flags);
- clk->count++;
- if (clk->count == 1)
- clk->ops->enable(clk->id);
- spin_unlock_irqrestore(&clocks_lock, flags);
- return 0;
-}
-EXPORT_SYMBOL(clk_enable);
-
-void clk_disable(struct clk *clk)
-{
- unsigned long flags;
- spin_lock_irqsave(&clocks_lock, flags);
- BUG_ON(clk->count == 0);
- clk->count--;
- if (clk->count == 0)
- clk->ops->disable(clk->id);
- spin_unlock_irqrestore(&clocks_lock, flags);
-}
-EXPORT_SYMBOL(clk_disable);
-
int clk_reset(struct clk *clk, enum clk_reset_action action)
{
- return clk->ops->reset(clk->remote_id, action);
+ struct clk_hw *hw = __clk_get_hw(clk);
+ struct msm_clk *m = to_msm_clk(hw);
+ return m->reset(hw, action);
}
EXPORT_SYMBOL(clk_reset);
-
-unsigned long clk_get_rate(struct clk *clk)
-{
- return clk->ops->get_rate(clk->id);
-}
-EXPORT_SYMBOL(clk_get_rate);
-
-int clk_set_rate(struct clk *clk, unsigned long rate)
-{
- int ret;
- if (clk->flags & CLKFLAG_MAX) {
- ret = clk->ops->set_max_rate(clk->id, rate);
- if (ret)
- return ret;
- }
- if (clk->flags & CLKFLAG_MIN) {
- ret = clk->ops->set_min_rate(clk->id, rate);
- if (ret)
- return ret;
- }
-
- if (clk->flags & CLKFLAG_MAX || clk->flags & CLKFLAG_MIN)
- return ret;
-
- return clk->ops->set_rate(clk->id, rate);
-}
-EXPORT_SYMBOL(clk_set_rate);
-
-long clk_round_rate(struct clk *clk, unsigned long rate)
-{
- return clk->ops->round_rate(clk->id, rate);
-}
-EXPORT_SYMBOL(clk_round_rate);
-
-int clk_set_parent(struct clk *clk, struct clk *parent)
-{
- return -ENOSYS;
-}
-EXPORT_SYMBOL(clk_set_parent);
-
-struct clk *clk_get_parent(struct clk *clk)
-{
- return ERR_PTR(-ENOSYS);
-}
-EXPORT_SYMBOL(clk_get_parent);
-
-/* EBI1 is the only shared clock that several clients want to vote on as of
- * this commit. If this changes in the future, then it might be better to
- * make clk_min_rate handle the voting or make ebi1_clk_set_min_rate more
- * generic to support different clocks.
- */
-static struct clk *ebi1_clk;
-
-void msm_clock_init(struct clk_lookup *clock_tbl, size_t num_clocks)
-{
- unsigned n;
-
- mutex_lock(&clocks_mutex);
- for (n = 0; n < num_clocks; n++) {
- clkdev_add(&clock_tbl[n]);
- list_add_tail(&clock_tbl[n].clk->list, &clocks);
- }
- mutex_unlock(&clocks_mutex);
-
- ebi1_clk = clk_get(NULL, "ebi1_clk");
- BUG_ON(ebi1_clk == NULL);
-
-}
-
-/* The bootloader and/or AMSS may have left various clocks enabled.
- * Disable any clocks that belong to us (CLKFLAG_AUTO_OFF) but have
- * not been explicitly enabled by a clk_enable() call.
- */
-static int __init clock_late_init(void)
-{
- unsigned long flags;
- struct clk *clk;
- unsigned count = 0;
-
- clock_debug_init();
- mutex_lock(&clocks_mutex);
- list_for_each_entry(clk, &clocks, list) {
- clock_debug_add(clk);
- if (clk->flags & CLKFLAG_AUTO_OFF) {
- spin_lock_irqsave(&clocks_lock, flags);
- if (!clk->count) {
- count++;
- clk->ops->auto_off(clk->id);
- }
- spin_unlock_irqrestore(&clocks_lock, flags);
- }
- }
- mutex_unlock(&clocks_mutex);
- pr_info("clock_late_init() disabled %d unused clocks\n", count);
- return 0;
-}
-
-late_initcall(clock_late_init);
-
/* arch/arm/mach-msm/clock.h
*
* Copyright (C) 2007 Google, Inc.
- * Copyright (c) 2007-2010, Code Aurora Forum. All rights reserved.
+ * Copyright (c) 2007-2012, The Linux Foundation. All rights reserved.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
#ifndef __ARCH_ARM_MACH_MSM_CLOCK_H
#define __ARCH_ARM_MACH_MSM_CLOCK_H
-#include <linux/init.h>
-#include <linux/list.h>
+#include <linux/clk-provider.h>
#include <mach/clk.h>
#define CLK_FIRST_AVAILABLE_FLAG 0x00000100
#define CLKFLAG_MIN 0x00000400
#define CLKFLAG_MAX 0x00000800
-struct clk_ops {
- int (*enable)(unsigned id);
- void (*disable)(unsigned id);
- void (*auto_off)(unsigned id);
- int (*reset)(unsigned id, enum clk_reset_action action);
- int (*set_rate)(unsigned id, unsigned rate);
- int (*set_min_rate)(unsigned id, unsigned rate);
- int (*set_max_rate)(unsigned id, unsigned rate);
- unsigned (*get_rate)(unsigned id);
- unsigned (*is_enabled)(unsigned id);
- long (*round_rate)(unsigned id, unsigned rate);
- bool (*is_local)(unsigned id);
-};
-
-struct clk {
- uint32_t id;
- uint32_t remote_id;
- uint32_t count;
- uint32_t flags;
- struct clk_ops *ops;
- const char *dbg_name;
- struct list_head list;
-};
-
#define OFF CLKFLAG_AUTO_OFF
#define CLK_MIN CLKFLAG_MIN
#define CLK_MAX CLKFLAG_MAX
#define CLK_MINMAX (CLK_MIN | CLK_MAX)
-#ifdef CONFIG_DEBUG_FS
-int __init clock_debug_init(void);
-int __init clock_debug_add(struct clk *clock);
-#else
-static inline int __init clock_debug_init(void) { return 0; }
-static inline int __init clock_debug_add(struct clk *clock) { return 0; }
-#endif
+struct msm_clk {
+ int (*reset)(struct clk_hw *hw, enum clk_reset_action action);
+ struct clk_hw hw;
+};
-struct clk_lookup;
-void msm_clock_init(struct clk_lookup *clock_tbl, size_t num_clocks);
+static inline struct msm_clk *to_msm_clk(struct clk_hw *hw)
+{
+ return container_of(hw, struct msm_clk, hw);
+}
#endif
.resource = resources_mdp,
};
-static struct clk_lookup msm_clocks_7x01a[] = {
+static struct clk_pcom_desc msm_clocks_7x01a[] = {
CLK_PCOM("adm_clk", ADM_CLK, NULL, 0),
CLK_PCOM("adsp_clk", ADSP_CLK, NULL, 0),
CLK_PCOM("ebi1_clk", EBI1_CLK, NULL, 0),
},
};
-static struct clk_lookup msm_clocks_7x30[] = {
+static struct clk_pcom_desc msm_clocks_7x30[] = {
CLK_PCOM("adm_clk", ADM_CLK, NULL, 0),
CLK_PCOM("adsp_clk", ADSP_CLK, NULL, 0),
CLK_PCOM("cam_m_clk", CAM_M_CLK, NULL, 0),
return platform_device_register(pdev);
}
-static struct clk_lookup msm_clocks_8x50[] = {
+static struct clk_pcom_desc msm_clocks_8x50[] = {
CLK_PCOM("adm_clk", ADM_CLK, NULL, 0),
CLK_PCOM("ce_clk", CE_CLK, NULL, 0),
CLK_PCOM("ebi1_clk", EBI1_CLK, NULL, CLK_MIN),
projects / karo-tx-linux.git / commitdiff