1. 根目录:
2. drivers
3. pwm
4. Makefile

obj-$(CONFIG_PWM)		+= core.o
obj-$(CONFIG_PWM_SYSFS)		+= sysfs.o
obj-$(CONFIG_PWM_AB8500)	+= pwm-ab8500.o
obj-$(CONFIG_PWM_ATMEL)		+= pwm-atmel.o
obj-$(CONFIG_PWM_ATMEL_TCB)	+= pwm-atmel-tcb.o
obj-$(CONFIG_PWM_BCM_KONA)	+= pwm-bcm-kona.o
obj-$(CONFIG_PWM_BFIN)		+= pwm-bfin.o
obj-$(CONFIG_PWM_CLPS711X)	+= pwm-clps711x.o
obj-$(CONFIG_PWM_EP93XX)	+= pwm-ep93xx.o
obj-$(CONFIG_PWM_FSL_FTM)	+= pwm-fsl-ftm.o
obj-$(CONFIG_PWM_IMX)		+= pwm-imx.o
obj-$(CONFIG_PWM_JZ4740)	+= pwm-jz4740.o
obj-$(CONFIG_PWM_LP3943)	+= pwm-lp3943.o
obj-$(CONFIG_PWM_LPC32XX)	+= pwm-lpc32xx.o
obj-$(CONFIG_PWM_LPSS)		+= pwm-lpss.o
obj-$(CONFIG_PWM_LPSS_PCI)	+= pwm-lpss-pci.o
obj-$(CONFIG_PWM_LPSS_PLATFORM)	+= pwm-lpss-platform.o
obj-$(CONFIG_PWM_MXS)		+= pwm-mxs.o
obj-$(CONFIG_PWM_PCA9685)	+= pwm-pca9685.o
obj-$(CONFIG_PWM_PUV3)		+= pwm-puv3.o
obj-$(CONFIG_PWM_PXA)		+= pwm-pxa.o
obj-$(CONFIG_PWM_RENESAS_TPU)	+= pwm-renesas-tpu.o
obj-$(CONFIG_PWM_ROCKCHIP)	+= pwm-rockchip.o
obj-$(CONFIG_PWM_SAMSUNG)	+= pwm-samsung.o
obj-$(CONFIG_PWM_SPEAR)		+= pwm-spear.o
obj-$(CONFIG_PWM_STI)		+= pwm-sti.o
obj-$(CONFIG_PWM_TEGRA)		+= pwm-tegra.o
obj-$(CONFIG_PWM_TIECAP)	+= pwm-tiecap.o
obj-$(CONFIG_PWM_TIEHRPWM)	+= pwm-tiehrpwm.o
obj-$(CONFIG_PWM_TIPWMSS)	+= pwm-tipwmss.o
obj-$(CONFIG_PWM_TWL)		+= pwm-twl.o
obj-$(CONFIG_PWM_TWL_LED)	+= pwm-twl-led.o
obj-$(CONFIG_PWM_VT8500)	+= pwm-vt8500.o