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 24 struct ti_ssp_dev_data { 25 const char *dev_name; 26 void *pdata; 27 size_t pdata_size; 28 }; 29 30 struct ti_ssp_data { 31 unsigned long out_clock; 32 struct ti_ssp_dev_data dev_data[2]; 33 }; 34 35 struct 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 86 int ti_ssp_raw_read(struct device *dev); 87 int ti_ssp_raw_write(struct device *dev, u32 val); 88 int ti_ssp_load(struct device *dev, int offs, u32* prog, int len); 89 int ti_ssp_run(struct device *dev, u32 pc, u32 input, u32 *output); 90 int ti_ssp_set_mode(struct device *dev, int mode); 91 int ti_ssp_set_iosel(struct device *dev, u32 iosel); 92 93 #endif /* __TI_SSP_H__ */ 94