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>
26 #include <plat/dsp_common.h>
28 #define DPS_RSTCT2_PER_EN (1 << 0)
29 #define DSP_RSTCT2_WD_PER_EN (1 << 1)
32 static struct clk
*api_clk
;
33 static struct clk
*dsp_clk
;
35 static void omap1_mcbsp_request(unsigned int id
)
38 * On 1510, 1610 and 1710, McBSP1 and McBSP3
39 * are DSP public peripherals.
41 if (id
== OMAP_MCBSP1
|| id
== OMAP_MCBSP3
) {
43 api_clk
= clk_get(NULL
, "api_ck");
44 dsp_clk
= clk_get(NULL
, "dsp_ck");
45 if (!IS_ERR(api_clk
) && !IS_ERR(dsp_clk
)) {
49 omap_dsp_request_mem();
51 * DSP external peripheral reset
52 * FIXME: This should be moved to dsp code
54 __raw_writew(__raw_readw(DSP_RSTCT2
) | DPS_RSTCT2_PER_EN
|
55 DSP_RSTCT2_WD_PER_EN
, DSP_RSTCT2
);
61 static void omap1_mcbsp_free(unsigned int id
)
63 if (id
== OMAP_MCBSP1
|| id
== OMAP_MCBSP3
) {
65 omap_dsp_release_mem();
66 if (!IS_ERR(api_clk
)) {
70 if (!IS_ERR(dsp_clk
)) {
78 static struct omap_mcbsp_ops omap1_mcbsp_ops
= {
79 .request
= omap1_mcbsp_request
,
80 .free
= omap1_mcbsp_free
,
83 #if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
84 static struct omap_mcbsp_platform_data omap7xx_mcbsp_pdata
[] = {
86 .phys_base
= OMAP7XX_MCBSP1_BASE
,
87 .dma_rx_sync
= OMAP_DMA_MCBSP1_RX
,
88 .dma_tx_sync
= OMAP_DMA_MCBSP1_TX
,
89 .rx_irq
= INT_7XX_McBSP1RX
,
90 .tx_irq
= INT_7XX_McBSP1TX
,
91 .ops
= &omap1_mcbsp_ops
,
94 .phys_base
= OMAP7XX_MCBSP2_BASE
,
95 .dma_rx_sync
= OMAP_DMA_MCBSP3_RX
,
96 .dma_tx_sync
= OMAP_DMA_MCBSP3_TX
,
97 .rx_irq
= INT_7XX_McBSP2RX
,
98 .tx_irq
= INT_7XX_McBSP2TX
,
99 .ops
= &omap1_mcbsp_ops
,
102 #define OMAP7XX_MCBSP_PDATA_SZ ARRAY_SIZE(omap7xx_mcbsp_pdata)
103 #define OMAP7XX_MCBSP_REG_NUM (OMAP_MCBSP_REG_XCERH / sizeof(u16) + 1)
105 #define omap7xx_mcbsp_pdata NULL
106 #define OMAP7XX_MCBSP_PDATA_SZ 0
107 #define OMAP7XX_MCBSP_REG_NUM 0
110 #ifdef CONFIG_ARCH_OMAP15XX
111 static struct omap_mcbsp_platform_data omap15xx_mcbsp_pdata
[] = {
113 .phys_base
= OMAP1510_MCBSP1_BASE
,
114 .dma_rx_sync
= OMAP_DMA_MCBSP1_RX
,
115 .dma_tx_sync
= OMAP_DMA_MCBSP1_TX
,
116 .rx_irq
= INT_McBSP1RX
,
117 .tx_irq
= INT_McBSP1TX
,
118 .ops
= &omap1_mcbsp_ops
,
121 .phys_base
= OMAP1510_MCBSP2_BASE
,
122 .dma_rx_sync
= OMAP_DMA_MCBSP2_RX
,
123 .dma_tx_sync
= OMAP_DMA_MCBSP2_TX
,
124 .rx_irq
= INT_1510_SPI_RX
,
125 .tx_irq
= INT_1510_SPI_TX
,
126 .ops
= &omap1_mcbsp_ops
,
129 .phys_base
= OMAP1510_MCBSP3_BASE
,
130 .dma_rx_sync
= OMAP_DMA_MCBSP3_RX
,
131 .dma_tx_sync
= OMAP_DMA_MCBSP3_TX
,
132 .rx_irq
= INT_McBSP3RX
,
133 .tx_irq
= INT_McBSP3TX
,
134 .ops
= &omap1_mcbsp_ops
,
137 #define OMAP15XX_MCBSP_PDATA_SZ ARRAY_SIZE(omap15xx_mcbsp_pdata)
138 #define OMAP15XX_MCBSP_REG_NUM (OMAP_MCBSP_REG_XCERH / sizeof(u16) + 1)
140 #define omap15xx_mcbsp_pdata NULL
141 #define OMAP15XX_MCBSP_PDATA_SZ 0
142 #define OMAP15XX_MCBSP_REG_NUM 0
145 #ifdef CONFIG_ARCH_OMAP16XX
146 static struct omap_mcbsp_platform_data omap16xx_mcbsp_pdata
[] = {
148 .phys_base
= OMAP1610_MCBSP1_BASE
,
149 .dma_rx_sync
= OMAP_DMA_MCBSP1_RX
,
150 .dma_tx_sync
= OMAP_DMA_MCBSP1_TX
,
151 .rx_irq
= INT_McBSP1RX
,
152 .tx_irq
= INT_McBSP1TX
,
153 .ops
= &omap1_mcbsp_ops
,
156 .phys_base
= OMAP1610_MCBSP2_BASE
,
157 .dma_rx_sync
= OMAP_DMA_MCBSP2_RX
,
158 .dma_tx_sync
= OMAP_DMA_MCBSP2_TX
,
159 .rx_irq
= INT_1610_McBSP2_RX
,
160 .tx_irq
= INT_1610_McBSP2_TX
,
161 .ops
= &omap1_mcbsp_ops
,
164 .phys_base
= OMAP1610_MCBSP3_BASE
,
165 .dma_rx_sync
= OMAP_DMA_MCBSP3_RX
,
166 .dma_tx_sync
= OMAP_DMA_MCBSP3_TX
,
167 .rx_irq
= INT_McBSP3RX
,
168 .tx_irq
= INT_McBSP3TX
,
169 .ops
= &omap1_mcbsp_ops
,
172 #define OMAP16XX_MCBSP_PDATA_SZ ARRAY_SIZE(omap16xx_mcbsp_pdata)
173 #define OMAP16XX_MCBSP_REG_NUM (OMAP_MCBSP_REG_XCERH / sizeof(u16) + 1)
175 #define omap16xx_mcbsp_pdata NULL
176 #define OMAP16XX_MCBSP_PDATA_SZ 0
177 #define OMAP16XX_MCBSP_REG_NUM 0
180 int __init
omap1_mcbsp_init(void)
182 if (cpu_is_omap7xx()) {
183 omap_mcbsp_count
= OMAP7XX_MCBSP_PDATA_SZ
;
184 omap_mcbsp_cache_size
= OMAP7XX_MCBSP_REG_NUM
* sizeof(u16
);
185 } else if (cpu_is_omap15xx()) {
186 omap_mcbsp_count
= OMAP15XX_MCBSP_PDATA_SZ
;
187 omap_mcbsp_cache_size
= OMAP15XX_MCBSP_REG_NUM
* sizeof(u16
);
188 } else if (cpu_is_omap16xx()) {
189 omap_mcbsp_count
= OMAP16XX_MCBSP_PDATA_SZ
;
190 omap_mcbsp_cache_size
= OMAP16XX_MCBSP_REG_NUM
* sizeof(u16
);
193 mcbsp_ptr
= kzalloc(omap_mcbsp_count
* sizeof(struct omap_mcbsp
*),
198 if (cpu_is_omap7xx())
199 omap_mcbsp_register_board_cfg(omap7xx_mcbsp_pdata
,
200 OMAP7XX_MCBSP_PDATA_SZ
);
202 if (cpu_is_omap15xx())
203 omap_mcbsp_register_board_cfg(omap15xx_mcbsp_pdata
,
204 OMAP15XX_MCBSP_PDATA_SZ
);
206 if (cpu_is_omap16xx())
207 omap_mcbsp_register_board_cfg(omap16xx_mcbsp_pdata
,
208 OMAP16XX_MCBSP_PDATA_SZ
);
210 return omap_mcbsp_init();
213 arch_initcall(omap1_mcbsp_init
);