linux-mips
[Top] [All Lists]

[PATCH_V2 13/34] MIPS: jz4740: replace use of jz4740_clock_bdata

To: <linux-mips@linux-mips.org>
Subject: [PATCH_V2 13/34] MIPS: jz4740: replace use of jz4740_clock_bdata
From: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>
Date: Wed, 4 Feb 2015 15:21:42 +0000
Cc: <devicetree@vger.kernel.org>, <linux-serial@vger.kernel.org>, <linux-kernel@vger.kernel.org>, <Zubair.Kakakhel@imgtec.com>, <gregkh@linuxfoundation.org>, <mturquette@linaro.org>, <sboyd@codeaurora.org>, <ralf@linux-mips.org>, <jslaby@suse.cz>, <tglx@linutronix.de>, <jason@lakedaemon.net>, <lars@metafoo.de>, <paul.burton@imgtec.com>
In-reply-to: <1423063323-19419-1-git-send-email-Zubair.Kakakhel@imgtec.com>
List-archive: <http://www.linux-mips.org/archives/linux-mips/>
List-help: <mailto:ecartis@linux-mips.org?Subject=help>
List-id: linux-mips <linux-mips.eddie.linux-mips.org>
List-owner: <mailto:ralf@linux-mips.org>
List-post: <mailto:linux-mips@linux-mips.org>
List-software: Ecartis version 1.0.0
List-subscribe: <mailto:ecartis@linux-mips.org?subject=subscribe%20linux-mips>
List-unsubscribe: <mailto:ecartis@linux-mips.org?subject=unsubscribe%20linux-mips>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <1423063323-19419-1-git-send-email-Zubair.Kakakhel@imgtec.com>
Sender: linux-mips-bounce@linux-mips.org
From: Paul Burton <paul.burton@imgtec.com>

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>
---
 arch/mips/jz4740/platform.c | 11 ++++++++++-
 arch/mips/jz4740/reset.c    | 13 +++++++++++--
 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 0b12f27..2a5c7c7 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 b6c6343..954e669 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 9424344..bff2ac9 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>
@@ -109,11 +110,17 @@ 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);
-- 
1.9.1


<Prev in Thread] Current Thread [Next in Thread>