@@ -28,6 +28,7 @@
#include <linux/mfd/asic3.h>
#include <linux/mtd/physmap.h>
#include <linux/pda_power.h>
+#include <linux/pwm.h>
#include <linux/pwm_backlight.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/gpio-regulator.h>
@@ -556,7 +557,7 @@ static struct platform_device hx4700_lcd = {
*/
static struct platform_pwm_backlight_data backlight_data = {
- .pwm_id = 1,
+ .pwm_id = -1, /* Superseded by pwm_lookup */
.max_brightness = 200,
.dft_brightness = 100,
.pwm_period_ns = 30923,
@@ -571,6 +572,10 @@ static struct platform_device backlight = {
},
};
+static struct pwm_lookup hx4700_pwm_lookup[] = {
+ PWM_LOOKUP("pxa27x-pwm.1", 0, "pwm-backlight", NULL),
+};
+
/*
* USB "Transceiver"
*/
@@ -872,6 +877,7 @@ static void __init hx4700_init(void)
pxa_set_stuart_info(NULL);
platform_add_devices(devices, ARRAY_SIZE(devices));
+ pwm_add_table(hx4700_pwm_lookup, ARRAY_SIZE(hx4700_pwm_lookup));
pxa_set_ficp_info(&ficp_info);
pxa27x_set_i2c_power_info(NULL);
Recent changes to PXA PWM support changed the PXA27X PWM device numbering scheme. The linux-3.5 PXA PWM driver followed the hardware numbering scheme for the 4 PWMs, while the linux-3.6-rc1 PXA PWM driver has adopted a linear numbering scheme: Address Hardware 3.5 pwm_id 3.6-rc1 pwm_id 0x40b00000 PWM0 0 0 0x40b00010 PWM2 2 1 0x40c00000 PWM1 1 2 0x40c00010 PWM3 3 3 The hx4700 backlight uses PWM1 at 0x40c00000. Consequently the pwm_id must be changed from 1 to 2. This patch fixes the backlight PWM device number and at the same time moves from the legacy PWM API (pwm_id) to the new PWM API (pwm_lookup). Signed-off-by: Paul Parsons <lost.distance@yahoo.com> Cc: Thierry Reding <thierry.reding@avionic-design.de> --- V2: Switch from legacy PWM API to new PWM API. arch/arm/mach-pxa/hx4700.c | 8 +++++++- 1 files changed, 7 insertions(+), 1 deletions(-)