From: Noralf Trønnes Date: Tue, 20 Jan 2015 22:40:26 +0000 (+0100) Subject: staging: fbtft: remove ARCH_BCM2708 optimization X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=e60088575bcbaf8d71a0e9f1d44fbf136f95e2cd;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git staging: fbtft: remove ARCH_BCM2708 optimization ARCH_BCM2708 is not present in mainline so remove optimization. Signed-off-by: Noralf Trønnes Reported-by: Paul Bolle Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/fbtft/fbtft-io.c b/drivers/staging/fbtft/fbtft-io.c index dfa2c468454a..32155a7b2a62 100644 --- a/drivers/staging/fbtft/fbtft-io.c +++ b/drivers/staging/fbtft/fbtft-io.c @@ -2,9 +2,6 @@ #include #include #include -#ifdef CONFIG_ARCH_BCM2708 -#include -#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<gpio.wr), __io_address(GPIO_BASE+0x28)); - writel(0, __io_address(GPIO_BASE+0x28)); /* used as a delay */ - writel((1<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 */