staging: fbtft: remove ARCH_BCM2708 optimization

ARCH_BCM2708 is not present in mainline so remove optimization.

Signed-off-by: Noralf Trønnes <notro@tronnes.org>
Reported-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/fbtft/fbtft-io.c

@@ -2,9 +2,6 @@
 #include <linux/errno.h>
 #include <linux/gpio.h>
 #include <linux/spi/spi.h>
-#ifdef CONFIG_ARCH_BCM2708
-#include <mach/platform.h>
-#endif
 #include "fbtft.h"
 
 int fbtft_write_spi(struct fbtft_par *par, void *buf, size_t len)
@@ -129,171 +126,6 @@ int fbtft_read_spi(struct fbtft_par *par, void *buf, size_t len)
 }
 EXPORT_SYMBOL(fbtft_read_spi);
 
-
-#ifdef CONFIG_ARCH_BCM2708
-
-/*
- *  Raspberry Pi
- *  -  writing directly to the registers is 40-50% faster than
- *     optimized use of gpiolib
- */
-
-#define GPIOSET(no, ishigh)           \
-do {                                  \
-	if (ishigh)                   \
-		set |= (1 << (no));   \
-	else                          \
-		reset |= (1 << (no)); \
-} while (0)
-
-int fbtft_write_gpio8_wr(struct fbtft_par *par, void *buf, size_t len)
-{
-	unsigned int set = 0;
-	unsigned int reset = 0;
-	u8 data;
-
-	fbtft_par_dbg_hex(DEBUG_WRITE, par, par->info->device, u8, buf, len,
-		"%s(len=%d): ", __func__, len);
-
-	while (len--) {
-		data = *(u8 *) buf;
-		buf++;
-
-		/* Set data */
-		GPIOSET(par->gpio.db[0], (data&0x01));
-		GPIOSET(par->gpio.db[1], (data&0x02));
-		GPIOSET(par->gpio.db[2], (data&0x04));
-		GPIOSET(par->gpio.db[3], (data&0x08));
-		GPIOSET(par->gpio.db[4], (data&0x10));
-		GPIOSET(par->gpio.db[5], (data&0x20));
-		GPIOSET(par->gpio.db[6], (data&0x40));
-		GPIOSET(par->gpio.db[7], (data&0x80));
-		writel(set, __io_address(GPIO_BASE+0x1C));
-		writel(reset, __io_address(GPIO_BASE+0x28));
-
-		/* Pulse /WR low */
-		writel((1<<par->gpio.wr),  __io_address(GPIO_BASE+0x28));
-		writel(0,  __io_address(GPIO_BASE+0x28)); /* used as a delay */
-		writel((1<<par->gpio.wr),  __io_address(GPIO_BASE+0x1C));
-
-		set = 0;
-		reset = 0;
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL(fbtft_write_gpio8_wr);
-
-int fbtft_write_gpio16_wr(struct fbtft_par *par, void *buf, size_t len)
-{
-	unsigned int set = 0;
-	unsigned int reset = 0;
-	u16 data;
-
-	fbtft_par_dbg_hex(DEBUG_WRITE, par, par->info->device, u8, buf, len,
-		"%s(len=%d): ", __func__, len);
-
-	while (len) {
-		len -= 2;
-		data = *(u16 *) buf;
-		buf += 2;
-
-		/* Start writing by pulling down /WR */
-		gpio_set_value(par->gpio.wr, 0);
-
-		/* Set data */
-		GPIOSET(par->gpio.db[0],  (data&0x0001));
-		GPIOSET(par->gpio.db[1],  (data&0x0002));
-		GPIOSET(par->gpio.db[2],  (data&0x0004));
-		GPIOSET(par->gpio.db[3],  (data&0x0008));
-		GPIOSET(par->gpio.db[4],  (data&0x0010));
-		GPIOSET(par->gpio.db[5],  (data&0x0020));
-		GPIOSET(par->gpio.db[6],  (data&0x0040));
-		GPIOSET(par->gpio.db[7],  (data&0x0080));
-
-		GPIOSET(par->gpio.db[8],  (data&0x0100));
-		GPIOSET(par->gpio.db[9],  (data&0x0200));
-		GPIOSET(par->gpio.db[10], (data&0x0400));
-		GPIOSET(par->gpio.db[11], (data&0x0800));
-		GPIOSET(par->gpio.db[12], (data&0x1000));
-		GPIOSET(par->gpio.db[13], (data&0x2000));
-		GPIOSET(par->gpio.db[14], (data&0x4000));
-		GPIOSET(par->gpio.db[15], (data&0x8000));
-
-		writel(set, __io_address(GPIO_BASE+0x1C));
-		writel(reset, __io_address(GPIO_BASE+0x28));
-
-		/* Pullup /WR */
-		gpio_set_value(par->gpio.wr, 1);
-
-		set = 0;
-		reset = 0;
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL(fbtft_write_gpio16_wr);
-
-int fbtft_write_gpio16_wr_latched(struct fbtft_par *par, void *buf, size_t len)
-{
-	unsigned int set = 0;
-	unsigned int reset = 0;
-	u16 data;
-
-	fbtft_par_dbg_hex(DEBUG_WRITE, par, par->info->device, u8, buf, len,
-		"%s(len=%d): ", __func__, len);
-
-	while (len) {
-		len -= 2;
-		data = *(u16 *) buf;
-		buf += 2;
-
-		/* Start writing by pulling down /WR */
-		gpio_set_value(par->gpio.wr, 0);
-
-		/* Low byte */
-		GPIOSET(par->gpio.db[0],  (data&0x0001));
-		GPIOSET(par->gpio.db[1],  (data&0x0002));
-		GPIOSET(par->gpio.db[2],  (data&0x0004));
-		GPIOSET(par->gpio.db[3],  (data&0x0008));
-		GPIOSET(par->gpio.db[4],  (data&0x0010));
-		GPIOSET(par->gpio.db[5],  (data&0x0020));
-		GPIOSET(par->gpio.db[6],  (data&0x0040));
-		GPIOSET(par->gpio.db[7],  (data&0x0080));
-		writel(set, __io_address(GPIO_BASE+0x1C));
-		writel(reset, __io_address(GPIO_BASE+0x28));
-
-		/* Pulse 'latch' high */
-		gpio_set_value(par->gpio.latch, 1);
-		gpio_set_value(par->gpio.latch, 0);
-
-		/* High byte */
-		GPIOSET(par->gpio.db[0], (data&0x0100));
-		GPIOSET(par->gpio.db[1], (data&0x0200));
-		GPIOSET(par->gpio.db[2], (data&0x0400));
-		GPIOSET(par->gpio.db[3], (data&0x0800));
-		GPIOSET(par->gpio.db[4], (data&0x1000));
-		GPIOSET(par->gpio.db[5], (data&0x2000));
-		GPIOSET(par->gpio.db[6], (data&0x4000));
-		GPIOSET(par->gpio.db[7], (data&0x8000));
-		writel(set, __io_address(GPIO_BASE+0x1C));
-		writel(reset, __io_address(GPIO_BASE+0x28));
-
-		/* Pullup /WR */
-		gpio_set_value(par->gpio.wr, 1);
-
-		set = 0;
-		reset = 0;
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL(fbtft_write_gpio16_wr_latched);
-
-#undef GPIOSET
-
-#else
-
 /*
  * Optimized use of gpiolib is twice as fast as no optimization
  * only one driver can use the optimized version at a time
@@ -405,5 +237,3 @@ int fbtft_write_gpio16_wr_latched(struct fbtft_par *par, void *buf, size_t len)
 	return -1;
 }
 EXPORT_SYMBOL(fbtft_write_gpio16_wr_latched);
-
-#endif /* CONFIG_ARCH_BCM2708 */