diff options
| author | Paul Burton <paul.burton@imgtec.com> | 2015-05-24 18:11:33 +0300 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2015-06-21 22:53:12 +0300 |
| commit | e06b86a33ad9a225d6336f2489cdd79aeaa9d59b (patch) | |
| tree | ad484b9facecd02ee2a9e800d978c41c67b64179 /arch/mips | |
| parent | 1f4b840983ffbd7053b5c2219deaf62b4b8a3c12 (diff) | |
| download | linux-e06b86a33ad9a225d6336f2489cdd79aeaa9d59b.tar.xz | |
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>
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/jz4740/platform.c | 11 | ||||
| -rw-r--r-- | arch/mips/jz4740/reset.c | 13 | ||||
| -rw-r--r-- | arch/mips/jz4740/time.c | 9 |
3 files changed, 29 insertions, 4 deletions
diff --git a/arch/mips/jz4740/platform.c b/arch/mips/jz4740/platform.c index 0b12f273cb2e..2a5c7c7d0735 100644 --- a/arch/mips/jz4740/platform.c +++ b/arch/mips/jz4740/platform.c @@ -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); } diff --git a/arch/mips/jz4740/reset.c b/arch/mips/jz4740/reset.c index b6c6343d2834..954e669c9e6b 100644 --- a/arch/mips/jz4740/reset.c +++ b/arch/mips/jz4740/reset.c @@ -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 diff --git a/arch/mips/jz4740/time.c b/arch/mips/jz4740/time.c index 78ed7652ef67..f66f7f5bbe87 100644 --- a/arch/mips/jz4740/time.c +++ b/arch/mips/jz4740/time.c @@ -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); |