2 * linux/arch/arm/mach-omap1/mcbsp.c
4 * Copyright (C) 2008 Instituto Nokia de Tecnologia
5 * Contact: Eduardo Valentin <eduardo.valentin@indt.org.br>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
11 * Multichannel mode not supported.
13 #include <linux/module.h>
14 #include <linux/init.h>
15 #include <linux/clk.h>
16 #include <linux/err.h>
18 #include <linux/platform_device.h>
19 #include <linux/slab.h>
21 #include <mach/irqs.h>
25 #include <plat/mcbsp.h>
27 #define DPS_RSTCT2_PER_EN (1 << 0)
28 #define DSP_RSTCT2_WD_PER_EN (1 << 1)
31 static struct clk
*api_clk
;
32 static struct clk
*dsp_clk
;
34 static void omap1_mcbsp_request(unsigned int id
)
37 * On 1510, 1610 and 1710, McBSP1 and McBSP3
38 * are DSP public peripherals.
40 if (id
== OMAP_MCBSP1
|| id
== OMAP_MCBSP3
) {
42 api_clk
= clk_get(NULL
, "api_ck");
43 dsp_clk
= clk_get(NULL
, "dsp_ck");
44 if (!IS_ERR(api_clk
) && !IS_ERR(dsp_clk
)) {
49 * DSP external peripheral reset
50 * FIXME: This should be moved to dsp code
52 __raw_writew(__raw_readw(DSP_RSTCT2
) | DPS_RSTCT2_PER_EN
|
53 DSP_RSTCT2_WD_PER_EN
, DSP_RSTCT2
);
59 static void omap1_mcbsp_free(unsigned int id
)
61 if (id
== OMAP_MCBSP1
|| id
== OMAP_MCBSP3
) {
63 if (!IS_ERR(api_clk
)) {
67 if (!IS_ERR(dsp_clk
)) {
75 static struct omap_mcbsp_ops omap1_mcbsp_ops
= {
76 .request
= omap1_mcbsp_request
,
77 .free
= omap1_mcbsp_free
,
80 #if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
81 static struct omap_mcbsp_platform_data omap7xx_mcbsp_pdata
[] = {
83 .phys_base
= OMAP7XX_MCBSP1_BASE
,
84 .dma_rx_sync
= OMAP_DMA_MCBSP1_RX
,
85 .dma_tx_sync
= OMAP_DMA_MCBSP1_TX
,
86 .rx_irq
= INT_7XX_McBSP1RX
,
87 .tx_irq
= INT_7XX_McBSP1TX
,
88 .ops
= &omap1_mcbsp_ops
,
91 .phys_base
= OMAP7XX_MCBSP2_BASE
,
92 .dma_rx_sync
= OMAP_DMA_MCBSP3_RX
,
93 .dma_tx_sync
= OMAP_DMA_MCBSP3_TX
,
94 .rx_irq
= INT_7XX_McBSP2RX
,
95 .tx_irq
= INT_7XX_McBSP2TX
,
96 .ops
= &omap1_mcbsp_ops
,
99 #define OMAP7XX_MCBSP_PDATA_SZ ARRAY_SIZE(omap7xx_mcbsp_pdata)
100 #define OMAP7XX_MCBSP_REG_NUM (OMAP_MCBSP_REG_XCERH / sizeof(u16) + 1)
102 #define omap7xx_mcbsp_pdata NULL
103 #define OMAP7XX_MCBSP_PDATA_SZ 0
104 #define OMAP7XX_MCBSP_REG_NUM 0
107 #ifdef CONFIG_ARCH_OMAP15XX
108 static struct omap_mcbsp_platform_data omap15xx_mcbsp_pdata
[] = {
110 .phys_base
= OMAP1510_MCBSP1_BASE
,
111 .dma_rx_sync
= OMAP_DMA_MCBSP1_RX
,
112 .dma_tx_sync
= OMAP_DMA_MCBSP1_TX
,
113 .rx_irq
= INT_McBSP1RX
,
114 .tx_irq
= INT_McBSP1TX
,
115 .ops
= &omap1_mcbsp_ops
,
118 .phys_base
= OMAP1510_MCBSP2_BASE
,
119 .dma_rx_sync
= OMAP_DMA_MCBSP2_RX
,
120 .dma_tx_sync
= OMAP_DMA_MCBSP2_TX
,
121 .rx_irq
= INT_1510_SPI_RX
,
122 .tx_irq
= INT_1510_SPI_TX
,
123 .ops
= &omap1_mcbsp_ops
,
126 .phys_base
= OMAP1510_MCBSP3_BASE
,
127 .dma_rx_sync
= OMAP_DMA_MCBSP3_RX
,
128 .dma_tx_sync
= OMAP_DMA_MCBSP3_TX
,
129 .rx_irq
= INT_McBSP3RX
,
130 .tx_irq
= INT_McBSP3TX
,
131 .ops
= &omap1_mcbsp_ops
,
134 #define OMAP15XX_MCBSP_PDATA_SZ ARRAY_SIZE(omap15xx_mcbsp_pdata)
135 #define OMAP15XX_MCBSP_REG_NUM (OMAP_MCBSP_REG_XCERH / sizeof(u16) + 1)
137 #define omap15xx_mcbsp_pdata NULL
138 #define OMAP15XX_MCBSP_PDATA_SZ 0
139 #define OMAP15XX_MCBSP_REG_NUM 0
142 #ifdef CONFIG_ARCH_OMAP16XX
143 static struct omap_mcbsp_platform_data omap16xx_mcbsp_pdata
[] = {
145 .phys_base
= OMAP1610_MCBSP1_BASE
,
146 .dma_rx_sync
= OMAP_DMA_MCBSP1_RX
,
147 .dma_tx_sync
= OMAP_DMA_MCBSP1_TX
,
148 .rx_irq
= INT_McBSP1RX
,
149 .tx_irq
= INT_McBSP1TX
,
150 .ops
= &omap1_mcbsp_ops
,
153 .phys_base
= OMAP1610_MCBSP2_BASE
,
154 .dma_rx_sync
= OMAP_DMA_MCBSP2_RX
,
155 .dma_tx_sync
= OMAP_DMA_MCBSP2_TX
,
156 .rx_irq
= INT_1610_McBSP2_RX
,
157 .tx_irq
= INT_1610_McBSP2_TX
,
158 .ops
= &omap1_mcbsp_ops
,
161 .phys_base
= OMAP1610_MCBSP3_BASE
,
162 .dma_rx_sync
= OMAP_DMA_MCBSP3_RX
,
163 .dma_tx_sync
= OMAP_DMA_MCBSP3_TX
,
164 .rx_irq
= INT_McBSP3RX
,
165 .tx_irq
= INT_McBSP3TX
,
166 .ops
= &omap1_mcbsp_ops
,
169 #define OMAP16XX_MCBSP_PDATA_SZ ARRAY_SIZE(omap16xx_mcbsp_pdata)
170 #define OMAP16XX_MCBSP_REG_NUM (OMAP_MCBSP_REG_XCERH / sizeof(u16) + 1)
172 #define omap16xx_mcbsp_pdata NULL
173 #define OMAP16XX_MCBSP_PDATA_SZ 0
174 #define OMAP16XX_MCBSP_REG_NUM 0
177 int __init
omap1_mcbsp_init(void)
179 if (cpu_is_omap7xx()) {
180 omap_mcbsp_count
= OMAP7XX_MCBSP_PDATA_SZ
;
181 omap_mcbsp_cache_size
= OMAP7XX_MCBSP_REG_NUM
* sizeof(u16
);
182 } else if (cpu_is_omap15xx()) {
183 omap_mcbsp_count
= OMAP15XX_MCBSP_PDATA_SZ
;
184 omap_mcbsp_cache_size
= OMAP15XX_MCBSP_REG_NUM
* sizeof(u16
);
185 } else if (cpu_is_omap16xx()) {
186 omap_mcbsp_count
= OMAP16XX_MCBSP_PDATA_SZ
;
187 omap_mcbsp_cache_size
= OMAP16XX_MCBSP_REG_NUM
* sizeof(u16
);
190 mcbsp_ptr
= kzalloc(omap_mcbsp_count
* sizeof(struct omap_mcbsp
*),
195 if (cpu_is_omap7xx())
196 omap_mcbsp_register_board_cfg(omap7xx_mcbsp_pdata
,
197 OMAP7XX_MCBSP_PDATA_SZ
);
199 if (cpu_is_omap15xx())
200 omap_mcbsp_register_board_cfg(omap15xx_mcbsp_pdata
,
201 OMAP15XX_MCBSP_PDATA_SZ
);
203 if (cpu_is_omap16xx())
204 omap_mcbsp_register_board_cfg(omap16xx_mcbsp_pdata
,
205 OMAP16XX_MCBSP_PDATA_SZ
);
207 return omap_mcbsp_init();
210 arch_initcall(omap1_mcbsp_init
);