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authorThomas Gleixner <tglx@linutronix.de>2014-11-27 11:47:10 +0100
committerThomas Gleixner <tglx@linutronix.de>2014-11-27 11:47:38 +0100
commit89de77a8c557f14d2713a1f43fbc33980e639b98 (patch)
tree3d7f32120b6b155e3d1374b277a6333cdb9c31cc /drivers/watchdog
parentcb2aa63469f81426c7406227be70b628b42f7a05 (diff)
parent4a22d9c93af1f2b2c40354c4bc59fd007f33f05e (diff)
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Merge branch 'clockevents/3.19' of http://git.linaro.org/people/daniel.lezcano/linux into timers/core
Daniel Lezcano muttered: * Marvell timer updates from Ezequiel Garcia - Add missing clock enable calls for armada - Change source clock for clocksource and watchdog * SIRF timer updates from Yanchang Li - Make clock rate configurable
Diffstat (limited to 'drivers/watchdog')
-rw-r--r--drivers/watchdog/orion_wdt.c42
1 files changed, 41 insertions, 1 deletions
diff --git a/drivers/watchdog/orion_wdt.c b/drivers/watchdog/orion_wdt.c
index 00d0741228fc..8cb1ff3bcd90 100644
--- a/drivers/watchdog/orion_wdt.c
+++ b/drivers/watchdog/orion_wdt.c
@@ -114,6 +114,46 @@ static int armada370_wdt_clock_init(struct platform_device *pdev,
return 0;
}
+static int armada375_wdt_clock_init(struct platform_device *pdev,
+ struct orion_watchdog *dev)
+{
+ int ret;
+
+ dev->clk = of_clk_get_by_name(pdev->dev.of_node, "fixed");
+ if (!IS_ERR(dev->clk)) {
+ ret = clk_prepare_enable(dev->clk);
+ if (ret) {
+ clk_put(dev->clk);
+ return ret;
+ }
+
+ atomic_io_modify(dev->reg + TIMER_CTRL,
+ WDT_AXP_FIXED_ENABLE_BIT,
+ WDT_AXP_FIXED_ENABLE_BIT);
+ dev->clk_rate = clk_get_rate(dev->clk);
+
+ return 0;
+ }
+
+ /* Mandatory fallback for proper devicetree backward compatibility */
+ dev->clk = clk_get(&pdev->dev, NULL);
+ if (IS_ERR(dev->clk))
+ return PTR_ERR(dev->clk);
+
+ ret = clk_prepare_enable(dev->clk);
+ if (ret) {
+ clk_put(dev->clk);
+ return ret;
+ }
+
+ atomic_io_modify(dev->reg + TIMER_CTRL,
+ WDT_A370_RATIO_MASK(WDT_A370_RATIO_SHIFT),
+ WDT_A370_RATIO_MASK(WDT_A370_RATIO_SHIFT));
+ dev->clk_rate = clk_get_rate(dev->clk) / WDT_A370_RATIO;
+
+ return 0;
+}
+
static int armadaxp_wdt_clock_init(struct platform_device *pdev,
struct orion_watchdog *dev)
{
@@ -394,7 +434,7 @@ static const struct orion_watchdog_data armada375_data = {
.rstout_mask_bit = BIT(10),
.wdt_enable_bit = BIT(8),
.wdt_counter_offset = 0x34,
- .clock_init = armada370_wdt_clock_init,
+ .clock_init = armada375_wdt_clock_init,
.enabled = armada375_enabled,
.start = armada375_start,
.stop = armada375_stop,