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>
20 #include <mach/irqs.h>
22 #include <mach/irqs.h>
25 #include <mach/mcbsp.h>
26 #include <mach/dsp_common.h>
28 #define DPS_RSTCT2_PER_EN (1 << 0)
29 #define DSP_RSTCT2_WD_PER_EN (1 << 1)
31 struct mcbsp_internal_clk
{
37 #if defined(CONFIG_ARCH_OMAP15XX) || defined(CONFIG_ARCH_OMAP16XX)
38 static void omap_mcbsp_clk_init(struct mcbsp_internal_clk
*mclk
)
40 const char *clk_names
[] = { "dsp_ck", "api_ck", "dspxor_ck" };
43 mclk
->n_childs
= ARRAY_SIZE(clk_names
);
44 mclk
->childs
= kzalloc(mclk
->n_childs
* sizeof(struct clk
*),
47 for (i
= 0; i
< mclk
->n_childs
; i
++) {
48 /* We fake a platform device to get correct device id */
49 struct platform_device pdev
;
51 pdev
.dev
.bus
= &platform_bus_type
;
52 pdev
.id
= mclk
->clk
.id
;
53 mclk
->childs
[i
] = clk_get(&pdev
.dev
, clk_names
[i
]);
54 if (IS_ERR(mclk
->childs
[i
]))
55 printk(KERN_ERR
"Could not get clock %s (%d).\n",
56 clk_names
[i
], mclk
->clk
.id
);
60 static int omap_mcbsp_clk_enable(struct clk
*clk
)
62 struct mcbsp_internal_clk
*mclk
= container_of(clk
,
63 struct mcbsp_internal_clk
, clk
);
66 for (i
= 0; i
< mclk
->n_childs
; i
++)
67 clk_enable(mclk
->childs
[i
]);
71 static void omap_mcbsp_clk_disable(struct clk
*clk
)
73 struct mcbsp_internal_clk
*mclk
= container_of(clk
,
74 struct mcbsp_internal_clk
, clk
);
77 for (i
= 0; i
< mclk
->n_childs
; i
++)
78 clk_disable(mclk
->childs
[i
]);
81 static struct mcbsp_internal_clk omap_mcbsp_clks
[] = {
86 .enable
= omap_mcbsp_clk_enable
,
87 .disable
= omap_mcbsp_clk_disable
,
94 .enable
= omap_mcbsp_clk_enable
,
95 .disable
= omap_mcbsp_clk_disable
,
100 #define omap_mcbsp_clks_size ARRAY_SIZE(omap_mcbsp_clks)
102 #define omap_mcbsp_clks_size 0
103 static struct mcbsp_internal_clk __initdata
*omap_mcbsp_clks
;
104 static inline void omap_mcbsp_clk_init(struct mcbsp_internal_clk
*mclk
)
108 static void omap1_mcbsp_request(unsigned int id
)
111 * On 1510, 1610 and 1710, McBSP1 and McBSP3
112 * are DSP public peripherals.
114 if (id
== OMAP_MCBSP1
|| id
== OMAP_MCBSP3
) {
115 omap_dsp_request_mem();
117 * DSP external peripheral reset
118 * FIXME: This should be moved to dsp code
120 __raw_writew(__raw_readw(DSP_RSTCT2
) | DPS_RSTCT2_PER_EN
|
121 DSP_RSTCT2_WD_PER_EN
, DSP_RSTCT2
);
125 static void omap1_mcbsp_free(unsigned int id
)
127 if (id
== OMAP_MCBSP1
|| id
== OMAP_MCBSP3
)
128 omap_dsp_release_mem();
131 static struct omap_mcbsp_ops omap1_mcbsp_ops
= {
132 .request
= omap1_mcbsp_request
,
133 .free
= omap1_mcbsp_free
,
136 #ifdef CONFIG_ARCH_OMAP730
137 static struct omap_mcbsp_platform_data omap730_mcbsp_pdata
[] = {
139 .phys_base
= OMAP730_MCBSP1_BASE
,
140 .dma_rx_sync
= OMAP_DMA_MCBSP1_RX
,
141 .dma_tx_sync
= OMAP_DMA_MCBSP1_TX
,
142 .rx_irq
= INT_730_McBSP1RX
,
143 .tx_irq
= INT_730_McBSP1TX
,
144 .ops
= &omap1_mcbsp_ops
,
147 .phys_base
= OMAP730_MCBSP2_BASE
,
148 .dma_rx_sync
= OMAP_DMA_MCBSP3_RX
,
149 .dma_tx_sync
= OMAP_DMA_MCBSP3_TX
,
150 .rx_irq
= INT_730_McBSP2RX
,
151 .tx_irq
= INT_730_McBSP2TX
,
152 .ops
= &omap1_mcbsp_ops
,
155 #define OMAP730_MCBSP_PDATA_SZ ARRAY_SIZE(omap730_mcbsp_pdata)
157 #define omap730_mcbsp_pdata NULL
158 #define OMAP730_MCBSP_PDATA_SZ 0
161 #ifdef CONFIG_ARCH_OMAP15XX
162 static struct omap_mcbsp_platform_data omap15xx_mcbsp_pdata
[] = {
164 .phys_base
= OMAP1510_MCBSP1_BASE
,
165 .dma_rx_sync
= OMAP_DMA_MCBSP1_RX
,
166 .dma_tx_sync
= OMAP_DMA_MCBSP1_TX
,
167 .rx_irq
= INT_McBSP1RX
,
168 .tx_irq
= INT_McBSP1TX
,
169 .ops
= &omap1_mcbsp_ops
,
170 .clk_name
= "mcbsp_clk",
173 .phys_base
= OMAP1510_MCBSP2_BASE
,
174 .dma_rx_sync
= OMAP_DMA_MCBSP2_RX
,
175 .dma_tx_sync
= OMAP_DMA_MCBSP2_TX
,
176 .rx_irq
= INT_1510_SPI_RX
,
177 .tx_irq
= INT_1510_SPI_TX
,
178 .ops
= &omap1_mcbsp_ops
,
181 .phys_base
= OMAP1510_MCBSP3_BASE
,
182 .dma_rx_sync
= OMAP_DMA_MCBSP3_RX
,
183 .dma_tx_sync
= OMAP_DMA_MCBSP3_TX
,
184 .rx_irq
= INT_McBSP3RX
,
185 .tx_irq
= INT_McBSP3TX
,
186 .ops
= &omap1_mcbsp_ops
,
187 .clk_name
= "mcbsp_clk",
190 #define OMAP15XX_MCBSP_PDATA_SZ ARRAY_SIZE(omap15xx_mcbsp_pdata)
192 #define omap15xx_mcbsp_pdata NULL
193 #define OMAP15XX_MCBSP_PDATA_SZ 0
196 #ifdef CONFIG_ARCH_OMAP16XX
197 static struct omap_mcbsp_platform_data omap16xx_mcbsp_pdata
[] = {
199 .phys_base
= OMAP1610_MCBSP1_BASE
,
200 .dma_rx_sync
= OMAP_DMA_MCBSP1_RX
,
201 .dma_tx_sync
= OMAP_DMA_MCBSP1_TX
,
202 .rx_irq
= INT_McBSP1RX
,
203 .tx_irq
= INT_McBSP1TX
,
204 .ops
= &omap1_mcbsp_ops
,
205 .clk_name
= "mcbsp_clk",
208 .phys_base
= OMAP1610_MCBSP2_BASE
,
209 .dma_rx_sync
= OMAP_DMA_MCBSP2_RX
,
210 .dma_tx_sync
= OMAP_DMA_MCBSP2_TX
,
211 .rx_irq
= INT_1610_McBSP2_RX
,
212 .tx_irq
= INT_1610_McBSP2_TX
,
213 .ops
= &omap1_mcbsp_ops
,
216 .phys_base
= OMAP1610_MCBSP3_BASE
,
217 .dma_rx_sync
= OMAP_DMA_MCBSP3_RX
,
218 .dma_tx_sync
= OMAP_DMA_MCBSP3_TX
,
219 .rx_irq
= INT_McBSP3RX
,
220 .tx_irq
= INT_McBSP3TX
,
221 .ops
= &omap1_mcbsp_ops
,
222 .clk_name
= "mcbsp_clk",
225 #define OMAP16XX_MCBSP_PDATA_SZ ARRAY_SIZE(omap16xx_mcbsp_pdata)
227 #define omap16xx_mcbsp_pdata NULL
228 #define OMAP16XX_MCBSP_PDATA_SZ 0
231 int __init
omap1_mcbsp_init(void)
235 for (i
= 0; i
< omap_mcbsp_clks_size
; i
++) {
236 if (cpu_is_omap15xx() || cpu_is_omap16xx()) {
237 omap_mcbsp_clk_init(&omap_mcbsp_clks
[i
]);
238 clk_register(&omap_mcbsp_clks
[i
].clk
);
242 if (cpu_is_omap730())
243 omap_mcbsp_count
= OMAP730_MCBSP_PDATA_SZ
;
244 if (cpu_is_omap15xx())
245 omap_mcbsp_count
= OMAP15XX_MCBSP_PDATA_SZ
;
246 if (cpu_is_omap16xx())
247 omap_mcbsp_count
= OMAP16XX_MCBSP_PDATA_SZ
;
249 mcbsp_ptr
= kzalloc(omap_mcbsp_count
* sizeof(struct omap_mcbsp
*),
254 if (cpu_is_omap730())
255 omap_mcbsp_register_board_cfg(omap730_mcbsp_pdata
,
256 OMAP730_MCBSP_PDATA_SZ
);
258 if (cpu_is_omap15xx())
259 omap_mcbsp_register_board_cfg(omap15xx_mcbsp_pdata
,
260 OMAP15XX_MCBSP_PDATA_SZ
);
262 if (cpu_is_omap16xx())
263 omap_mcbsp_register_board_cfg(omap16xx_mcbsp_pdata
,
264 OMAP16XX_MCBSP_PDATA_SZ
);
266 return omap_mcbsp_init();
269 arch_initcall(omap1_mcbsp_init
);