| /* |
| * Copyright (C) 2005 Stephen Street / StreetFire Sound Labs |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| */ |
| |
| #ifndef PXA2XX_SPI_H_ |
| #define PXA2XX_SPI_H_ |
| |
| #define PXA2XX_CS_ASSERT (0x01) |
| #define PXA2XX_CS_DEASSERT (0x02) |
| |
| #if defined(CONFIG_PXA25x) |
| #define CLOCK_SPEED_HZ 3686400 |
| #define SSP1_SerClkDiv(x) (((CLOCK_SPEED_HZ/2/(x+1))<<8)&0x0000ff00) |
| #define SSP2_SerClkDiv(x) (((CLOCK_SPEED_HZ/(x+1))<<8)&0x000fff00) |
| #define SSP3_SerClkDiv(x) (((CLOCK_SPEED_HZ/(x+1))<<8)&0x000fff00) |
| #elif defined(CONFIG_PXA27x) |
| #define CLOCK_SPEED_HZ 13000000 |
| #define SSP1_SerClkDiv(x) (((CLOCK_SPEED_HZ/(x+1))<<8)&0x000fff00) |
| #define SSP2_SerClkDiv(x) (((CLOCK_SPEED_HZ/(x+1))<<8)&0x000fff00) |
| #define SSP3_SerClkDiv(x) (((CLOCK_SPEED_HZ/(x+1))<<8)&0x000fff00) |
| #endif |
| |
| #define SSP1_VIRT ((void *)(io_p2v(__PREG(SSCR0_P(1))))) |
| #define SSP2_VIRT ((void *)(io_p2v(__PREG(SSCR0_P(2))))) |
| #define SSP3_VIRT ((void *)(io_p2v(__PREG(SSCR0_P(3))))) |
| |
| enum pxa_ssp_type { |
| SSP_UNDEFINED = 0, |
| PXA25x_SSP, /* pxa 210, 250, 255, 26x */ |
| PXA25x_NSSP, /* pxa 255, 26x (including ASSP) */ |
| PXA27x_SSP, |
| }; |
| |
| /* device.platform_data for SSP controller devices */ |
| struct pxa2xx_spi_master { |
| enum pxa_ssp_type ssp_type; |
| u32 clock_enable; |
| u16 num_chipselect; |
| u8 enable_dma; |
| }; |
| |
| /* spi_board_info.controller_data for SPI slave devices, |
| * copied to spi_device.platform_data ... mostly for dma tuning |
| */ |
| struct pxa2xx_spi_chip { |
| u8 tx_threshold; |
| u8 rx_threshold; |
| u8 dma_burst_size; |
| u32 timeout; |
| u8 enable_loopback; |
| void (*cs_control)(u32 command); |
| }; |
| |
| #endif /*PXA2XX_SPI_H_*/ |