[ARM] pxa: Add PXA support for PWM API

Patch mainly from Eric Miao, with minor edits by rmk.

Note: PWM0 and PWM2 share the same register I/O space and clock gating
on pxa{27x, 3xx}, thus PWM2 is treated in the driver as a child PWM of
PWM0. And this is also true for PWM1/3.

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 1 insertions, 0 deletions

diff --git a/arch/arm/mach-pxa/Makefile b/arch/arm/mach-pxa/Makefile
index 0e6d05bb81aa..02cbc3cfbe01 100644
--- a/arch/arm/mach-pxa/Makefile
+++ b/arch/arm/mach-pxa/Makefile
@@ -10,6 +10,7 @@ obj-$(CONFIG_CPU_FREQ)		+= cpu-pxa.o
 
 # Generic drivers that other drivers may depend upon
 obj-$(CONFIG_PXA_SSP)           += ssp.o
+obj-$(CONFIG_PXA_PWM)           += pwm.o
 
 # SoC-specific code
 obj-$(CONFIG_PXA25x)            += mfp-pxa2xx.o pxa25x.o