linux-kernel - [PATCH] pwm: pxa: Use driver_data field to store pwm

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Date:	Mon, 01 Apr 2013 00:12:07 +0800
From:	Axel Lin <axel.lin@...ics.com>
To:	Thierry Reding <thierry.reding@...onic-design.de>
Cc:	Eric Miao <eric.y.miao@...il.com>, linux-kernel@...r.kernel.org
Subject: [PATCH] pwm: pxa: Use driver_data field to store pwm_nr

The driver_data field was used to store information about PWM_ID_BASE and
HAS_SECONDARY_PWM. PWM_ID_BASE is not used now after convert to pwm framework.
This patch stores the pwm_nr in driver_data field to simplify the code.

Signed-off-by: Axel Lin <axel.lin@...ics.com>
---
 drivers/pwm/pwm-pxa.c |   11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/drivers/pwm/pwm-pxa.c b/drivers/pwm/pwm-pxa.c
index b789882..019a8e0 100644
--- a/drivers/pwm/pwm-pxa.c
+++ b/drivers/pwm/pwm-pxa.c
@@ -22,13 +22,10 @@
 
 #include <asm/div64.h>
 
-#define HAS_SECONDARY_PWM	0x10
-#define PWM_ID_BASE(d)		((d) & 0xf)
-
 static const struct platform_device_id pwm_id_table[] = {
-	/*   PWM    has_secondary_pwm? */
-	{ "pxa25x-pwm", 0 },
-	{ "pxa27x-pwm", 0 | HAS_SECONDARY_PWM },
+	/*   PWM    pwm_nr */
+	{ "pxa25x-pwm", 1 },
+	{ "pxa27x-pwm", 2 },
 	{ "pxa168-pwm", 1 },
 	{ "pxa910-pwm", 1 },
 	{ },
@@ -145,7 +142,7 @@ static int pwm_probe(struct platform_device *pdev)
 	pwm->chip.dev = &pdev->dev;
 	pwm->chip.ops = &pxa_pwm_ops;
 	pwm->chip.base = -1;
-	pwm->chip.npwm = (id->driver_data & HAS_SECONDARY_PWM) ? 2 : 1;
+	pwm->chip.npwm = id->driver_data;
 
 	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (r == NULL) {
-- 
1.7.10.4



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