misc: atmel_pwm: remove obsolete driver

The misc/atmel_pwm is not used by any mainlined boards and has been replaced by
the pwm-driver using the generic PWM framework.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

1 files changed, 0 insertions, 70 deletions

diff --git a/include/linux/atmel_pwm.h b/include/linux/atmel_pwm.h
deleted file mode 100644
index ea04abb3db8e..000000000000
--- a/include/linux/atmel_pwm.h
+++ /dev/null
@@ -1,70 +0,0 @@
-#ifndef __LINUX_ATMEL_PWM_H
-#define __LINUX_ATMEL_PWM_H
-
-/**
- * struct pwm_channel - driver handle to a PWM channel
- * @regs: base of this channel's registers
- * @index: number of this channel (0..31)
- * @mck: base clock rate, which can be prescaled and maybe subdivided
- *
- * Drivers initialize a pwm_channel structure using pwm_channel_alloc().
- * Then they configure its clock rate (derived from MCK), alignment,
- * polarity, and duty cycle by writing directly to the channel registers,
- * before enabling the channel by calling pwm_channel_enable().
- *
- * After emitting a PWM signal for the desired length of time, drivers
- * may then pwm_channel_disable() or pwm_channel_free().  Both of these
- * disable the channel, but when it's freed the IRQ is deconfigured and
- * the channel must later be re-allocated and reconfigured.
- *
- * Note that if the period or duty cycle need to be changed while the
- * PWM channel is operating, drivers must use the PWM_CUPD double buffer
- * mechanism, either polling until they change or getting implicitly
- * notified through a once-per-period interrupt handler.
- */
-struct pwm_channel {
-	void __iomem	*regs;
-	unsigned	index;
-	unsigned long	mck;
-};
-
-extern int pwm_channel_alloc(int index, struct pwm_channel *ch);
-extern int pwm_channel_free(struct pwm_channel *ch);
-
-extern int pwm_clk_alloc(unsigned prescale, unsigned div);
-extern void pwm_clk_free(unsigned clk);
-
-extern int __pwm_channel_onoff(struct pwm_channel *ch, int enabled);
-
-#define pwm_channel_enable(ch)	__pwm_channel_onoff((ch), 1)
-#define pwm_channel_disable(ch)	__pwm_channel_onoff((ch), 0)
-
-/* periodic interrupts, mostly for CUPD changes to period or cycle */
-extern int pwm_channel_handler(struct pwm_channel *ch,
-		void (*handler)(struct pwm_channel *ch));
-
-/* per-channel registers (banked at pwm_channel->regs) */
-#define PWM_CMR		0x00		/* mode register */
-#define		PWM_CPR_CPD	(1 << 10)	/* set: CUPD modifies period */
-#define		PWM_CPR_CPOL	(1 << 9)	/* set: idle high */
-#define		PWM_CPR_CALG	(1 << 8)	/* set: center align */
-#define		PWM_CPR_CPRE	(0xf << 0)	/* mask: rate is mck/(2^pre) */
-#define		PWM_CPR_CLKA	(0xb << 0)	/* rate CLKA */
-#define		PWM_CPR_CLKB	(0xc << 0)	/* rate CLKB */
-#define PWM_CDTY	0x04		/* duty cycle (max of CPRD) */
-#define PWM_CPRD	0x08		/* period (count up from zero) */
-#define PWM_CCNT	0x0c		/* counter (20 bits?) */
-#define PWM_CUPD	0x10		/* update CPRD (or CDTY) next period */
-
-static inline void
-pwm_channel_writel(struct pwm_channel *pwmc, unsigned offset, u32 val)
-{
-	__raw_writel(val, pwmc->regs + offset);
-}
-
-static inline u32 pwm_channel_readl(struct pwm_channel *pwmc, unsigned offset)
-{
-	return __raw_readl(pwmc->regs + offset);
-}
-
-#endif /* __LINUX_ATMEL_PWM_H */