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MIPS: JZ4740: replace use of jz4740_clock_bdata 

Replace uses of the jz4740_clock_bdata struct with calls to clk_get_rate
for the appropriate clock. This is in preparation for migrating the
clocks towards common clock framework & devicetree.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: linux-mips@linux-mips.org
Cc: Deng-Cheng Zhu <dengcheng.zhu@imgtec.com>
Cc: linux-kernel@vger.kernel.org
Cc: Apelete Seketeli <apelete@seketeli.net>
Patchwork: https://patchwork.linux-mips.org/patch/10149/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Paul Burton 2015-05-24 16:11:33 +01:00 committed by Ralf Baechle
parent 1f4b840983
commit e06b86a33a
3 changed files with 29 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
arch/mips/jz4740/platform.c
View File

@ -13,6 +13,7 @@
*
*/
#include <linux/clk.h>
#include <linux/device.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
@ -308,9 +309,17 @@ static struct platform_device jz4740_uart_device = {
void jz4740_serial_device_register(void)
{
struct plat_serial8250_port *p;
struct clk *ext_clk;
unsigned long ext_rate;
ext_clk = clk_get(NULL, "ext");
if (IS_ERR(ext_clk))
panic("unable to get ext clock");
ext_rate = clk_get_rate(ext_clk);
clk_put(ext_clk);
for (p = jz4740_uart_data; p->flags != 0; ++p)
p->uartclk = jz4740_clock_bdata.ext_rate;
p->uartclk = ext_rate;
platform_device_register(&jz4740_uart_device);
}

13
arch/mips/jz4740/reset.c
View File

@ -12,6 +12,7 @@
*
*/
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/pm.h>
@ -79,12 +80,20 @@ static void jz4740_power_off(void)
void __iomem *rtc_base = ioremap(JZ4740_RTC_BASE_ADDR, 0x38);
unsigned long wakeup_filter_ticks;
unsigned long reset_counter_ticks;
struct clk *rtc_clk;
unsigned long rtc_rate;
rtc_clk = clk_get(NULL, "rtc");
if (IS_ERR(rtc_clk))
panic("unable to get RTC clock");
rtc_rate = clk_get_rate(rtc_clk);
clk_put(rtc_clk);
/*
* Set minimum wakeup pin assertion time: 100 ms.
* Range is 0 to 2 sec if RTC is clocked at 32 kHz.
*/
wakeup_filter_ticks = (100 * jz4740_clock_bdata.rtc_rate) / 1000;
wakeup_filter_ticks = (100 * rtc_rate) / 1000;
if (wakeup_filter_ticks < JZ_RTC_WAKEUP_FILTER_MASK)
wakeup_filter_ticks &= JZ_RTC_WAKEUP_FILTER_MASK;
else
@ -96,7 +105,7 @@ static void jz4740_power_off(void)
* Set reset pin low-level assertion time after wakeup: 60 ms.
* Range is 0 to 125 ms if RTC is clocked at 32 kHz.
*/
reset_counter_ticks = (60 * jz4740_clock_bdata.rtc_rate) / 1000;
reset_counter_ticks = (60 * rtc_rate) / 1000;
if (reset_counter_ticks < JZ_RTC_RESET_COUNTER_MASK)
reset_counter_ticks &= JZ_RTC_RESET_COUNTER_MASK;
else

9
arch/mips/jz4740/time.c
View File

@ -13,6 +13,7 @@
*
*/
#include <linux/clk.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/time.h>
@ -115,11 +116,17 @@ void __init plat_time_init(void)
int ret;
uint32_t clk_rate;
uint16_t ctrl;
struct clk *ext_clk;
jz4740_clock_init();
jz4740_timer_init();
clk_rate = jz4740_clock_bdata.ext_rate >> 4;
ext_clk = clk_get(NULL, "ext");
if (IS_ERR(ext_clk))
panic("unable to get ext clock");
clk_rate = clk_get_rate(ext_clk) >> 4;
clk_put(ext_clk);
jz4740_jiffies_per_tick = DIV_ROUND_CLOSEST(clk_rate, HZ);
clockevent_set_clock(&jz4740_clockevent, clk_rate);