diff options
| -rw-r--r-- | arch/arm/mach-shmobile/include/mach/dma-register.h | 84 | ||||
| -rw-r--r-- | arch/arm/mach-shmobile/include/mach/gpio.h | 32 |
2 files changed, 116 insertions, 0 deletions
diff --git a/arch/arm/mach-shmobile/include/mach/dma-register.h b/arch/arm/mach-shmobile/include/mach/dma-register.h new file mode 100644 index 00000000000..97c40bd9b94 --- /dev/null +++ b/arch/arm/mach-shmobile/include/mach/dma-register.h @@ -0,0 +1,84 @@ +/* + * SH-ARM CPU-specific DMA definitions, used by both DMA drivers + * + * Copyright (C) 2012 Renesas Solutions Corp + * + * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> + * + * Based on arch/sh/include/cpu-sh4/cpu/dma-register.h + * Copyright (C) 2010 Guennadi Liakhovetski <g.liakhovetski@gmx.de> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef DMA_REGISTER_H +#define DMA_REGISTER_H + +/* + * Direct Memory Access Controller + */ + +/* Transmit sizes and respective CHCR register values */ +enum { + XMIT_SZ_8BIT = 0, + XMIT_SZ_16BIT = 1, + XMIT_SZ_32BIT = 2, + XMIT_SZ_64BIT = 7, + XMIT_SZ_128BIT = 3, + XMIT_SZ_256BIT = 4, + XMIT_SZ_512BIT = 5, +}; + +/* log2(size / 8) - used to calculate number of transfers */ +static const unsigned int dma_ts_shift[] = { + [XMIT_SZ_8BIT] = 0, + [XMIT_SZ_16BIT] = 1, + [XMIT_SZ_32BIT] = 2, + [XMIT_SZ_64BIT] = 3, + [XMIT_SZ_128BIT] = 4, + [XMIT_SZ_256BIT] = 5, + [XMIT_SZ_512BIT] = 6, +}; + +#define TS_LOW_BIT 0x3 /* --xx */ +#define TS_HI_BIT 0xc /* xx-- */ + +#define TS_LOW_SHIFT (3) +#define TS_HI_SHIFT (20 - 2) /* 2 bits for shifted low TS */ + +#define TS_INDEX2VAL(i) \ + ((((i) & TS_LOW_BIT) << TS_LOW_SHIFT) |\ + (((i) & TS_HI_BIT) << TS_HI_SHIFT)) + +#define CHCR_TX(xmit_sz) (DM_FIX | SM_INC | 0x800 | TS_INDEX2VAL((xmit_sz))) +#define CHCR_RX(xmit_sz) (DM_INC | SM_FIX | 0x800 | TS_INDEX2VAL((xmit_sz))) + + +/* + * USB High-Speed DMAC + */ +/* Transmit sizes and respective CHCR register values */ +enum { + USBTS_XMIT_SZ_8BYTE = 0, + USBTS_XMIT_SZ_16BYTE = 1, + USBTS_XMIT_SZ_32BYTE = 2, +}; + +/* log2(size / 8) - used to calculate number of transfers */ +static const unsigned int dma_usbts_shift[] = { + [USBTS_XMIT_SZ_8BYTE] = 3, + [USBTS_XMIT_SZ_16BYTE] = 4, + [USBTS_XMIT_SZ_32BYTE] = 5, +}; + +#define USBTS_LOW_BIT 0x3 /* --xx */ +#define USBTS_HI_BIT 0x0 /* ---- */ + +#define USBTS_LOW_SHIFT 6 +#define USBTS_HI_SHIFT 0 + +#define USBTS_INDEX2VAL(i) (((i) & 3) << 6) + +#endif /* DMA_REGISTER_H */ diff --git a/arch/arm/mach-shmobile/include/mach/gpio.h b/arch/arm/mach-shmobile/include/mach/gpio.h index de795b42232..844507d937c 100644 --- a/arch/arm/mach-shmobile/include/mach/gpio.h +++ b/arch/arm/mach-shmobile/include/mach/gpio.h @@ -13,6 +13,7 @@ #include <linux/kernel.h> #include <linux/errno.h> #include <linux/sh_pfc.h> +#include <linux/io.h> #ifdef CONFIG_GPIOLIB @@ -27,4 +28,35 @@ static inline int irq_to_gpio(unsigned int irq) #endif /* CONFIG_GPIOLIB */ +/* + * FIXME !! + * + * current gpio frame work doesn't have + * the method to control only pull up/down/free. + * this function should be replaced by correct gpio function + */ +static inline void __init gpio_direction_none(u32 addr) +{ + __raw_writeb(0x00, addr); +} + +static inline void __init gpio_request_pullup(u32 addr) +{ + u8 data = __raw_readb(addr); + + data &= 0x0F; + data |= 0xC0; + __raw_writeb(data, addr); +} + +static inline void __init gpio_request_pulldown(u32 addr) +{ + u8 data = __raw_readb(addr); + + data &= 0x0F; + data |= 0xA0; + + __raw_writeb(data, addr); +} + #endif /* __ASM_ARCH_GPIO_H */ |