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Merge branch 'renesas-soc-core' into renesas-sh73a0
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* renesas-soc-core:
  ARM: shmobile: add common DMAEngine definitions
  ARM: shmobile: add common extra gpio functions
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Rafael J. Wysocki committed Jun 30, 2012
2 parents ea7e1a5 + 5ca1d44 commit ddc0c5e
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84 changes: 84 additions & 0 deletions arch/arm/mach-shmobile/include/mach/dma-register.h
Original file line number Diff line number Diff line change
@@ -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 */
32 changes: 32 additions & 0 deletions arch/arm/mach-shmobile/include/mach/gpio.h
Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,7 @@
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/sh_pfc.h>
#include <linux/io.h>

#ifdef CONFIG_GPIOLIB

Expand All @@ -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 */

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