LXR linux/include/linux/mfd/ti

   1/*
   2 * Sequencer Serial Port (SSP) driver for Texas Instruments' SoCs
   3 *
   4 * Copyright (C) 2010 Texas Instruments Inc
   5 *
   6 * This program is free software; you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License as published by
   8 * the Free Software Foundation; either version 2 of the License, or
   9 * (at your option) any later version.
  10 *
  11 * This program is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 * GNU General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU General Public License
  17 * along with this program; if not, write to the Free Software
  18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19 */
  20
  21#ifndef __TI_SSP_H__
  22#define __TI_SSP_H__
  23
  24struct ti_ssp_dev_data {
  25        const char      *dev_name;
  26        void            *pdata;
  27        size_t          pdata_size;
  28};
  29
  30struct ti_ssp_data {
  31        unsigned long           out_clock;
  32        struct ti_ssp_dev_data  dev_data[2];
  33};
  34
  35struct ti_ssp_spi_data {
  36        unsigned long   iosel;
  37        int             num_cs;
  38        void            (*select)(int cs);
  39};
  40
  41/*
  42 * Sequencer port IO pin configuration bits.  These do not correlate 1-1 with
  43 * the hardware.  The iosel field in the port data combines iosel1 and iosel2,
  44 * and is therefore not a direct map to register space.  It is best to use the
  45 * macros below to construct iosel values.
  46 *
  47 * least significant 16 bits --> iosel1
  48 * most significant 16 bits  --> iosel2
  49 */
  50
  51#define SSP_IN                  0x0000
  52#define SSP_DATA                0x0001
  53#define SSP_CLOCK               0x0002
  54#define SSP_CHIPSEL             0x0003
  55#define SSP_OUT                 0x0004
  56#define SSP_PIN_SEL(pin, v)     ((v) << ((pin) * 3))
  57#define SSP_PIN_MASK(pin)       SSP_PIN_SEL(pin, 0x7)
  58#define SSP_INPUT_SEL(pin)      ((pin) << 16)
  59
  60/* Sequencer port config bits */
  61#define SSP_EARLY_DIN           BIT(8)
  62#define SSP_DELAY_DOUT          BIT(9)
  63
  64/* Sequence map definitions */
  65#define SSP_CLK_HIGH            BIT(0)
  66#define SSP_CLK_LOW             0
  67#define SSP_DATA_HIGH           BIT(1)
  68#define SSP_DATA_LOW            0
  69#define SSP_CS_HIGH             BIT(2)
  70#define SSP_CS_LOW              0
  71#define SSP_OUT_MODE            BIT(3)
  72#define SSP_IN_MODE             0
  73#define SSP_DATA_REG            BIT(4)
  74#define SSP_ADDR_REG            0
  75
  76#define SSP_OPCODE_DIRECT       ((0x0) << 5)
  77#define SSP_OPCODE_TOGGLE       ((0x1) << 5)
  78#define SSP_OPCODE_SHIFT        ((0x2) << 5)
  79#define SSP_OPCODE_BRANCH0      ((0x4) << 5)
  80#define SSP_OPCODE_BRANCH1      ((0x5) << 5)
  81#define SSP_OPCODE_BRANCH       ((0x6) << 5)
  82#define SSP_OPCODE_STOP         ((0x7) << 5)
  83#define SSP_BRANCH(addr)        ((addr) << 8)
  84#define SSP_COUNT(cycles)       ((cycles) << 8)
  85
  86int ti_ssp_raw_read(struct device *dev);
  87int ti_ssp_raw_write(struct device *dev, u32 val);
  88int ti_ssp_load(struct device *dev, int offs, u32* prog, int len);
  89int ti_ssp_run(struct device *dev, u32 pc, u32 input, u32 *output);
  90int ti_ssp_set_mode(struct device *dev, int mode);
  91int ti_ssp_set_iosel(struct device *dev, u32 iosel);
  92
  93#endif /* __TI_SSP_H__ */
  94