4 * Copyright (C) 2003 Russell King, All Rights Reserved.
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.
10 * This driver supports the following PXA CPU/SSP ports:-
14 * PXA26x SSP, NSSP, ASSP
15 * PXA27x SSP1, SSP2, SSP3
16 * PXA3xx SSP1, SSP2, SSP3, SSP4
19 #ifndef __ASM_ARCH_SSP_H
20 #define __ASM_ARCH_SSP_H
22 #include <linux/list.h>
27 PXA25x_SSP, /* pxa 210, 250, 255, 26x */
28 PXA25x_NSSP, /* pxa 255, 26x (including ASSP) */
33 struct platform_device *pdev;
34 struct list_head node;
37 void __iomem *mmio_base;
38 unsigned long phys_base;
49 #ifdef CONFIG_PXA_SSP_LEGACY
51 * SSP initialisation flags
53 #define SSP_NO_IRQ 0x1 /* don't register an irq handler in SSP driver */
63 struct ssp_device *ssp;
72 int ssp_write_word(struct ssp_dev *dev, u32 data);
73 int ssp_read_word(struct ssp_dev *dev, u32 *data);
74 int ssp_flush(struct ssp_dev *dev);
75 void ssp_enable(struct ssp_dev *dev);
76 void ssp_disable(struct ssp_dev *dev);
77 void ssp_save_state(struct ssp_dev *dev, struct ssp_state *ssp);
78 void ssp_restore_state(struct ssp_dev *dev, struct ssp_state *ssp);
79 int ssp_init(struct ssp_dev *dev, u32 port, u32 init_flags);
80 int ssp_config(struct ssp_dev *dev, u32 mode, u32 flags, u32 psp_flags, u32 speed);
81 void ssp_exit(struct ssp_dev *dev);
82 #endif /* CONFIG_PXA_SSP_LEGACY */
85 * ssp_write_reg - Write to a SSP register
87 * @dev: SSP device to access
88 * @reg: Register to write to
89 * @val: Value to be written.
91 static inline void ssp_write_reg(struct ssp_device *dev, u32 reg, u32 val)
93 __raw_writel(val, dev->mmio_base + reg);
97 * ssp_read_reg - Read from a SSP register
99 * @dev: SSP device to access
100 * @reg: Register to read from
102 static inline u32 ssp_read_reg(struct ssp_device *dev, u32 reg)
104 return __raw_readl(dev->mmio_base + reg);
107 struct ssp_device *ssp_request(int port, const char *label);
108 void ssp_free(struct ssp_device *);
109 #endif /* __ASM_ARCH_SSP_H */