diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/arm/mach-wmt/wmt_clock.c')
| -rwxr-xr-x | ANDROID_3.4.5/arch/arm/mach-wmt/wmt_clock.c | 171 |
1 files changed, 0 insertions, 171 deletions
diff --git a/ANDROID_3.4.5/arch/arm/mach-wmt/wmt_clock.c b/ANDROID_3.4.5/arch/arm/mach-wmt/wmt_clock.c deleted file mode 100755 index 1c8fff9e..00000000 --- a/ANDROID_3.4.5/arch/arm/mach-wmt/wmt_clock.c +++ /dev/null @@ -1,171 +0,0 @@ -/*++ - linux/arch/arm/mach-wmt/wmt_clock.c - - Copyright (c) 2013 WonderMedia Technologies, Inc. - - This program is free software: you can redistribute it and/or modify it under the - terms of the GNU General Public License as published by the Free Software Foundation, - either version 2 of the License, or (at your option) any later version. - - 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. - You should have received a copy of the GNU General Public License along with - this program. If not, see <http://www.gnu.org/licenses/>. - - WonderMedia Technologies, Inc. - 10F, 529, Chung-Cheng Road, Hsin-Tien, Taipei 231, R.O.C. ---*/ - -#include <linux/kernel.h> -#include <linux/types.h> -#include <linux/init.h> -#include <linux/slab.h> -#include <linux/module.h> -#include <linux/cpufreq.h> -#include <linux/delay.h> -#include <linux/clkdev.h> -#include <linux/clk-private.h> -#include <linux/clk-provider.h> -#include <mach/hardware.h> - -//#define DEBUG -#ifdef DEBUG -#define fq_dbg(fmt, args...) \ - printk(KERN_ERR "[%s]_%d_%d: " fmt, __func__ , __LINE__, smp_processor_id(), ## args) -#define fq_trace() printk(KERN_ERR "trace in %s %d\n", __func__, __LINE__) -#else -#define fq_dbg(fmt, args...) -#define fq_trace() -#endif - -#define DEV_NAME "smp_twd" - -static struct clk_lookup twd_lookup = { - .dev_id = DEV_NAME, -}; - -static int wmt_twd_clk_enable(struct clk_hw *hw) -{ - return 0; -} - -static void wmt_twd_clk_disable(struct clk_hw *hw) -{ - return ; -} - -static int wmt_twd_clk_is_enabled(struct clk_hw *hw) -{ - return true; -} - -static unsigned long -wmt_twd_clk_recalc_rate(struct clk_hw *hw, unsigned long parent_rate) -{ - int freq = 0; - - /* return the ARM CPU clock rate */ - freq = auto_pll_divisor(DEV_ARM, GET_CPUTIMER, 0, 0) / 2; - - if (freq < 0) - freq = 0; - - return freq; -} - -static struct clk_ops wmt_twd_clk_ops = { - .enable = wmt_twd_clk_enable, - .disable = wmt_twd_clk_disable, - .is_enabled = wmt_twd_clk_is_enabled, - .recalc_rate = wmt_twd_clk_recalc_rate, -}; - -static int wmt3498_register_twd_clk(struct clk_ops *ops, struct clk_lookup *cl) -{ - struct clk_hw *hw = NULL; - - clkdev_add(cl); - - /* register twd clk here */ - hw = kzalloc(sizeof(*hw), GFP_KERNEL); - if (!hw) { - printk(KERN_ERR "Register smp_twd clock failed!\n"); - return -ENOMEM; - } - - cl->clk = clk_register(NULL, DEV_NAME, ops, hw, NULL, 0, CLK_IS_ROOT); - - if (!cl->clk) { - printk(KERN_ERR "Register smp_twd clock failed!\n"); - kfree(hw); - return -ENOMEM; - } - - return 0; -} - -static void wmt3498_register_clocks(void) -{ - wmt3498_register_twd_clk(&wmt_twd_clk_ops, &twd_lookup); - - return ; -} - -static int wmt3498_setup_twd_clk(void) -{ - return 0; -} - -static void wmt3498_setup_clocks(void) -{ - wmt3498_setup_twd_clk(); - - return ; -} - -/* this func should be called in machine early_init or io_map */ -void wmt3498_init_clocks(void) -{ - wmt3498_register_clocks(); - wmt3498_setup_clocks(); - - return ; -} - -/* updates twd frequency when the cpu frequency changes. */ -static int wmt_twd_cpufreq_transition(struct notifier_block *nb, - unsigned long state, void *data) -{ - struct clk *wmt_twd_clk = twd_lookup.clk; - struct cpufreq_freqs *freqs = data; - - if (!wmt_twd_clk) - goto out; - - if (state == CPUFREQ_POSTCHANGE || state == CPUFREQ_RESUMECHANGE) { - // only boot-cpu do clk rate update - if (freqs->cpu == 0) { - wmt_twd_clk->rate = auto_pll_divisor(DEV_ARM, GET_CPUTIMER, 0, 0) / 2; - wmt_twd_clk->new_rate = wmt_twd_clk->rate; - } - } - -out: - return NOTIFY_OK; -} - -static struct notifier_block wmt_twd_cpufreq_nb = { - .notifier_call = wmt_twd_cpufreq_transition, - .priority = 10, /* higher than twd */ -}; - -static int wmt_twd_cpufreq_init(void) -{ - return cpufreq_register_notifier(&wmt_twd_cpufreq_nb, CPUFREQ_TRANSITION_NOTIFIER); -} -core_initcall(wmt_twd_cpufreq_init); - -MODULE_AUTHOR("WonderMedia Technologies, Inc"); -MODULE_DESCRIPTION("WMT Common Clock Driver"); -MODULE_LICENSE("Dual BSD/GPL"); |