linux-kernel - [RFC 09/18] power/reset: vexpress: Use regmap instead of custom interface

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Date:	Mon, 23 Dec 2013 16:23:41 +0000
From:	Pawel Moll <pawel.moll@....com>
To:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Cc:	Samuel Ortiz <sameo@...ux.intel.com>,
	Arnd Bergmann <arnd@...db.de>, Jon Medhurst <tixy@...aro.org>,
	arm@...nel.org, Olof Johansson <olof@...om.net>,
	Pawel Moll <pawel.moll@....com>,
	Anton Vorontsov <anton@...msg.org>,
	David Woodhouse <dwmw2@...radead.org>
Subject: [RFC 09/18] power/reset: vexpress: Use regmap instead of custom interface

This patch makes the Versatile Express reboot/reset driver
use regmap interface, instead of custom vexpress config
one. It will request the regmap resource associated
with the device, which makes it pretty much hardware
agnostic.

Signed-off-by: Pawel Moll <pawel.moll@....com>
Cc: Anton Vorontsov <anton@...msg.org>
Cc: David Woodhouse <dwmw2@...radead.org>
---
 drivers/power/reset/Kconfig             | 2 +-
 drivers/power/reset/vexpress-poweroff.c | 8 ++++----
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/power/reset/Kconfig b/drivers/power/reset/Kconfig
index 9b3ea53..98f64dc 100644
--- a/drivers/power/reset/Kconfig
+++ b/drivers/power/reset/Kconfig
@@ -40,7 +40,7 @@ config POWER_RESET_RESTART
 config POWER_RESET_VEXPRESS
 	bool "ARM Versatile Express power-off and reset driver"
 	depends on ARM || ARM64
-	depends on POWER_RESET && VEXPRESS_CONFIG
+	depends on POWER_RESET && REGMAP
 	help
 	  Power off and reset support for the ARM Ltd. Versatile
 	  Express boards.
diff --git a/drivers/power/reset/vexpress-poweroff.c b/drivers/power/reset/vexpress-poweroff.c
index d752233..a7fc882 100644
--- a/drivers/power/reset/vexpress-poweroff.c
+++ b/drivers/power/reset/vexpress-poweroff.c
@@ -15,6 +15,7 @@
 #include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/platform_device.h>
+#include <linux/regmap.h>
 #include <linux/sched.h>
 #include <linux/stat.h>
 #include <linux/vexpress.h>
@@ -24,13 +25,12 @@
 static void vexpress_reset_do(struct device *dev, const char *what)
 {
 	int err = -ENOENT;
-	struct vexpress_config_func *func =
-			vexpress_config_func_get_by_dev(dev);
+	struct regmap *reg = dev_get_regmap(dev, NULL);
 
-	if (func) {
+	if (reg) {
 		unsigned long long timeout_ns;
 
-		err = vexpress_config_write(func, 0, 0);
+		err = regmap_write(reg, 0, 0);
 
 		timeout_ns = sched_clock() + 50000000;
 		while (!err && time_before64(sched_clock(), timeout_ns))
-- 
1.8.3.2


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