Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * ssp.h |
| 3 | * |
| 4 | * Copyright (C) 2003 Russell King, All Rights Reserved. |
| 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 version 2 as |
| 8 | * published by the Free Software Foundation. |
| 9 | * |
| 10 | * This driver supports the following PXA CPU/SSP ports:- |
| 11 | * |
| 12 | * PXA250 SSP |
| 13 | * PXA255 SSP, NSSP |
| 14 | * PXA26x SSP, NSSP, ASSP |
| 15 | * PXA27x SSP1, SSP2, SSP3 |
eric miao | 8828645 | 2007-12-06 17:56:42 +0800 | [diff] [blame] | 16 | * PXA3xx SSP1, SSP2, SSP3, SSP4 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | */ |
| 18 | |
eric miao | 8828645 | 2007-12-06 17:56:42 +0800 | [diff] [blame] | 19 | #ifndef __ASM_ARCH_SSP_H |
| 20 | #define __ASM_ARCH_SSP_H |
| 21 | |
| 22 | #include <linux/list.h> |
| 23 | |
| 24 | enum pxa_ssp_type { |
| 25 | SSP_UNDEFINED = 0, |
| 26 | PXA25x_SSP, /* pxa 210, 250, 255, 26x */ |
| 27 | PXA25x_NSSP, /* pxa 255, 26x (including ASSP) */ |
| 28 | PXA27x_SSP, |
| 29 | }; |
| 30 | |
| 31 | struct ssp_device { |
| 32 | struct platform_device *pdev; |
| 33 | struct list_head node; |
| 34 | |
| 35 | struct clk *clk; |
| 36 | void __iomem *mmio_base; |
| 37 | unsigned long phys_base; |
| 38 | |
| 39 | const char *label; |
| 40 | int port_id; |
| 41 | int type; |
| 42 | int use_count; |
| 43 | int irq; |
| 44 | int drcmr_rx; |
| 45 | int drcmr_tx; |
| 46 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | |
Liam Girdwood | b216c01 | 2005-11-10 17:45:39 +0000 | [diff] [blame] | 48 | /* |
| 49 | * SSP initialisation flags |
| 50 | */ |
| 51 | #define SSP_NO_IRQ 0x1 /* don't register an irq handler in SSP driver */ |
| 52 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | struct ssp_state { |
| 54 | u32 cr0; |
| 55 | u32 cr1; |
| 56 | u32 to; |
| 57 | u32 psp; |
| 58 | }; |
| 59 | |
| 60 | struct ssp_dev { |
eric miao | 8828645 | 2007-12-06 17:56:42 +0800 | [diff] [blame] | 61 | struct ssp_device *ssp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | u32 port; |
| 63 | u32 mode; |
| 64 | u32 flags; |
| 65 | u32 psp_flags; |
| 66 | u32 speed; |
Liam Girdwood | b216c01 | 2005-11-10 17:45:39 +0000 | [diff] [blame] | 67 | int irq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | }; |
| 69 | |
| 70 | int ssp_write_word(struct ssp_dev *dev, u32 data); |
Paul Sokolovsky | 8f1bf87 | 2006-08-27 12:54:56 +0100 | [diff] [blame] | 71 | int ssp_read_word(struct ssp_dev *dev, u32 *data); |
| 72 | int ssp_flush(struct ssp_dev *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | void ssp_enable(struct ssp_dev *dev); |
| 74 | void ssp_disable(struct ssp_dev *dev); |
| 75 | void ssp_save_state(struct ssp_dev *dev, struct ssp_state *ssp); |
| 76 | void ssp_restore_state(struct ssp_dev *dev, struct ssp_state *ssp); |
Liam Girdwood | b216c01 | 2005-11-10 17:45:39 +0000 | [diff] [blame] | 77 | int ssp_init(struct ssp_dev *dev, u32 port, u32 init_flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | int ssp_config(struct ssp_dev *dev, u32 mode, u32 flags, u32 psp_flags, u32 speed); |
| 79 | void ssp_exit(struct ssp_dev *dev); |
| 80 | |
eric miao | 8828645 | 2007-12-06 17:56:42 +0800 | [diff] [blame] | 81 | struct ssp_device *ssp_request(int port, const char *label); |
| 82 | void ssp_free(struct ssp_device *); |
| 83 | #endif /* __ASM_ARCH_SSP_H */ |