Commit ea2abb67 authored by Olof Johansson's avatar Olof Johansson

Merge tag 'tegra-for-3.7-common-clk' of...

Merge tag 'tegra-for-3.7-common-clk' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into next/soc

From Stephen Warren:

ARM: tegra: switch to the common clock framework

This branch contains a few bug-fixes, followed by a conversion of Tegra's
clock driver to the common clock framework, followed by various bug fixes
found after the conversion.

* tag 'tegra-for-3.7-common-clk' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra:
  ARM: Tegra: Add smp_twd clock for Tegra20
  ARM: tegra: cpu-tegra: explicitly manage re-parenting
  ARM: tegra: fix overflow in tegra20_pll_clk_round_rate()
  ARM: tegra: Fix data type for io address
  ARM: tegra: remove tegra_timer from tegra_list_clks
  ARM: tegra30: clocks: fix the wrong tegra_audio_sync_clk_ops name
  ARM: tegra: clocks: separate tegra_clk_32k_ops from Tegra20 and Tegra30
  ARM: tegra: Remove duplicate code
  ARM: tegra: Port tegra to generic clock framework
  ARM: tegra: Add clk_tegra structure and helper functions
  ARM: tegra: Rename tegra20 clock file
  ARM: tegra20: Separate out clk ops and clk data
  ARM: tegra30: Separate out clk ops and clk data
  ARM: tegra: fix U16 divider range check
  ARM: tegra: turn on UART A clock at boot
parents 26a806c0 b4350f40
......@@ -686,6 +686,7 @@ config ARCH_TEGRA
select NEED_MACH_IO_H if PCI
select ARCH_HAS_CPUFREQ
select USE_OF
select COMMON_CLK
help
This enables support for NVIDIA Tegra based systems (Tegra APX,
Tegra 6xx and Tegra 2 series).
......
......@@ -12,9 +12,11 @@ obj-y += powergate.o
obj-y += apbio.o
obj-$(CONFIG_CPU_IDLE) += cpuidle.o
obj-$(CONFIG_CPU_IDLE) += sleep.o
obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += tegra2_clocks.o
obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += tegra20_clocks.o
obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += tegra20_clocks_data.o
obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += tegra2_emc.o
obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += tegra30_clocks.o
obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += tegra30_clocks_data.o
obj-$(CONFIG_SMP) += platsmp.o headsmp.o
obj-$(CONFIG_SMP) += reset.o
obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o
......
......@@ -71,6 +71,7 @@ struct of_dev_auxdata tegra20_auxdata_lookup[] __initdata = {
static __initdata struct tegra_clk_init_table tegra_dt_clk_init_table[] = {
/* name parent rate enabled */
{ "uarta", "pll_p", 216000000, true },
{ "uartd", "pll_p", 216000000, true },
{ "usbd", "clk_m", 12000000, false },
{ "usb2", "clk_m", 12000000, false },
......
This diff is collapsed.
......@@ -2,6 +2,7 @@
* arch/arm/mach-tegra/include/mach/clock.h
*
* Copyright (C) 2010 Google, Inc.
* Copyright (c) 2012 NVIDIA CORPORATION. All rights reserved.
*
* Author:
* Colin Cross <ccross@google.com>
......@@ -20,9 +21,9 @@
#ifndef __MACH_TEGRA_CLOCK_H
#define __MACH_TEGRA_CLOCK_H
#include <linux/clk-provider.h>
#include <linux/clkdev.h>
#include <linux/list.h>
#include <linux/spinlock.h>
#include <mach/clk.h>
......@@ -52,7 +53,8 @@
#define ENABLE_ON_INIT (1 << 28)
#define PERIPH_ON_APB (1 << 29)
struct clk;
struct clk_tegra;
#define to_clk_tegra(_hw) container_of(_hw, struct clk_tegra, hw)
struct clk_mux_sel {
struct clk *input;
......@@ -68,47 +70,29 @@ struct clk_pll_freq_table {
u8 cpcon;
};
struct clk_ops {
void (*init)(struct clk *);
int (*enable)(struct clk *);
void (*disable)(struct clk *);
int (*set_parent)(struct clk *, struct clk *);
int (*set_rate)(struct clk *, unsigned long);
long (*round_rate)(struct clk *, unsigned long);
void (*reset)(struct clk *, bool);
int (*clk_cfg_ex)(struct clk *,
enum tegra_clk_ex_param, u32);
};
enum clk_state {
UNINITIALIZED = 0,
ON,
OFF,
};
struct clk {
struct clk_tegra {
/* node for master clocks list */
struct list_head node; /* node for list of all clocks */
struct clk_lookup lookup;
struct clk_hw hw;
#ifdef CONFIG_DEBUG_FS
struct dentry *dent;
#endif
bool set;
struct clk_ops *ops;
unsigned long rate;
unsigned long fixed_rate;
unsigned long max_rate;
unsigned long min_rate;
u32 flags;
const char *name;
u32 refcnt;
enum clk_state state;
struct clk *parent;
u32 div;
u32 mul;
const struct clk_mux_sel *inputs;
u32 reg;
u32 reg_shift;
......@@ -144,7 +128,8 @@ struct clk {
} shared_bus_user;
} u;
spinlock_t spinlock;
void (*reset)(struct clk_hw *, bool);
int (*clk_cfg_ex)(struct clk_hw *, enum tegra_clk_ex_param, u32);
};
struct clk_duplicate {
......@@ -159,13 +144,10 @@ struct tegra_clk_init_table {
bool enabled;
};
void tegra_clk_add(struct clk *c);
void tegra2_init_clocks(void);
void tegra30_init_clocks(void);
void clk_init(struct clk *clk);
struct clk *tegra_get_clock_by_name(const char *name);
int clk_reparent(struct clk *c, struct clk *parent);
void tegra_clk_init_from_table(struct tegra_clk_init_table *table);
unsigned long clk_get_rate_locked(struct clk *c);
int clk_set_rate_locked(struct clk *c, unsigned long rate);
#endif
......@@ -152,6 +152,5 @@ void __init tegra30_init_early(void)
void __init tegra_init_late(void)
{
tegra_clk_debugfs_init();
tegra_powergate_debugfs_init();
}
......@@ -49,6 +49,8 @@ static struct cpufreq_frequency_table freq_table[] = {
#define NUM_CPUS 2
static struct clk *cpu_clk;
static struct clk *pll_x_clk;
static struct clk *pll_p_clk;
static struct clk *emc_clk;
static unsigned long target_cpu_speed[NUM_CPUS];
......@@ -71,6 +73,42 @@ static unsigned int tegra_getspeed(unsigned int cpu)
return rate;
}
static int tegra_cpu_clk_set_rate(unsigned long rate)
{
int ret;
/*
* Take an extra reference to the main pll so it doesn't turn
* off when we move the cpu off of it
*/
clk_prepare_enable(pll_x_clk);
ret = clk_set_parent(cpu_clk, pll_p_clk);
if (ret) {
pr_err("Failed to switch cpu to clock pll_p\n");
goto out;
}
if (rate == clk_get_rate(pll_p_clk))
goto out;
ret = clk_set_rate(pll_x_clk, rate);
if (ret) {
pr_err("Failed to change pll_x to %lu\n", rate);
goto out;
}
ret = clk_set_parent(cpu_clk, pll_x_clk);
if (ret) {
pr_err("Failed to switch cpu to clock pll_x\n");
goto out;
}
out:
clk_disable_unprepare(pll_x_clk);
return ret;
}
static int tegra_update_cpu_speed(unsigned long rate)
{
int ret = 0;
......@@ -101,7 +139,7 @@ static int tegra_update_cpu_speed(unsigned long rate)
freqs.old, freqs.new);
#endif
ret = clk_set_rate(cpu_clk, freqs.new * 1000);
ret = tegra_cpu_clk_set_rate(freqs.new * 1000);
if (ret) {
pr_err("cpu-tegra: Failed to set cpu frequency to %d kHz\n",
freqs.new);
......@@ -183,6 +221,14 @@ static int tegra_cpu_init(struct cpufreq_policy *policy)
if (IS_ERR(cpu_clk))
return PTR_ERR(cpu_clk);
pll_x_clk = clk_get_sys(NULL, "pll_x");
if (IS_ERR(pll_x_clk))
return PTR_ERR(pll_x_clk);
pll_p_clk = clk_get_sys(NULL, "pll_p");
if (IS_ERR(pll_p_clk))
return PTR_ERR(pll_p_clk);
emc_clk = clk_get_sys("cpu", "emc");
if (IS_ERR(emc_clk)) {
clk_put(cpu_clk);
......
......@@ -34,7 +34,10 @@ enum tegra_clk_ex_param {
void tegra_periph_reset_deassert(struct clk *c);
void tegra_periph_reset_assert(struct clk *c);
#ifndef CONFIG_COMMON_CLK
unsigned long clk_get_rate_all_locked(struct clk *c);
#endif
void tegra2_sdmmc_tap_delay(struct clk *c, int delay);
int tegra_clk_cfg_ex(struct clk *c, enum tegra_clk_ex_param p, u32 setting);
......
/*
* Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __MACH_TEGRA20_CLOCK_H
#define __MACH_TEGRA20_CLOCK_H
extern struct clk_ops tegra_clk_32k_ops;
extern struct clk_ops tegra_pll_ops;
extern struct clk_ops tegra_clk_m_ops;
extern struct clk_ops tegra_pll_div_ops;
extern struct clk_ops tegra_pllx_ops;
extern struct clk_ops tegra_plle_ops;
extern struct clk_ops tegra_clk_double_ops;
extern struct clk_ops tegra_cdev_clk_ops;
extern struct clk_ops tegra_audio_sync_clk_ops;
extern struct clk_ops tegra_super_ops;
extern struct clk_ops tegra_cpu_ops;
extern struct clk_ops tegra_twd_ops;
extern struct clk_ops tegra_cop_ops;
extern struct clk_ops tegra_bus_ops;
extern struct clk_ops tegra_blink_clk_ops;
extern struct clk_ops tegra_emc_clk_ops;
extern struct clk_ops tegra_periph_clk_ops;
extern struct clk_ops tegra_clk_shared_bus_ops;
void tegra2_periph_clk_reset(struct clk_hw *hw, bool assert);
void tegra2_cop_clk_reset(struct clk_hw *hw, bool assert);
#endif
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/*
* Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __MACH_TEGRA30_CLOCK_H
#define __MACH_TEGRA30_CLOCK_H
extern struct clk_ops tegra30_clk_32k_ops;
extern struct clk_ops tegra30_clk_m_ops;
extern struct clk_ops tegra_clk_m_div_ops;
extern struct clk_ops tegra_pll_ref_ops;
extern struct clk_ops tegra30_pll_ops;
extern struct clk_ops tegra30_pll_div_ops;
extern struct clk_ops tegra_plld_ops;
extern struct clk_ops tegra30_plle_ops;
extern struct clk_ops tegra_cml_clk_ops;
extern struct clk_ops tegra_pciex_clk_ops;
extern struct clk_ops tegra_sync_source_ops;
extern struct clk_ops tegra30_audio_sync_clk_ops;
extern struct clk_ops tegra30_clk_double_ops;
extern struct clk_ops tegra_clk_out_ops;
extern struct clk_ops tegra30_super_ops;
extern struct clk_ops tegra30_blink_clk_ops;
extern struct clk_ops tegra30_twd_ops;
extern struct clk_ops tegra30_periph_clk_ops;
extern struct clk_ops tegra30_dsib_clk_ops;
extern struct clk_ops tegra_nand_clk_ops;
extern struct clk_ops tegra_vi_clk_ops;
extern struct clk_ops tegra_dtv_clk_ops;
extern struct clk_ops tegra_clk_shared_bus_ops;
int tegra30_plld_clk_cfg_ex(struct clk_hw *hw,
enum tegra_clk_ex_param p, u32 setting);
void tegra30_periph_clk_reset(struct clk_hw *hw, bool assert);
int tegra30_vi_clk_cfg_ex(struct clk_hw *hw,
enum tegra_clk_ex_param p, u32 setting);
int tegra30_nand_clk_cfg_ex(struct clk_hw *hw,
enum tegra_clk_ex_param p, u32 setting);
int tegra30_dtv_clk_cfg_ex(struct clk_hw *hw,
enum tegra_clk_ex_param p, u32 setting);
#endif
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