Commit | Line | Data |
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78673bc8 EV |
1 | /* |
2 | * linux/arch/arm/mach-omap2/mcbsp.c | |
3 | * | |
4 | * Copyright (C) 2008 Instituto Nokia de Tecnologia | |
5 | * Contact: Eduardo Valentin <eduardo.valentin@indt.org.br> | |
6 | * | |
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. | |
10 | * | |
11 | * Multichannel mode not supported. | |
12 | */ | |
13 | #include <linux/module.h> | |
14 | #include <linux/init.h> | |
15 | #include <linux/clk.h> | |
16 | #include <linux/err.h> | |
17 | #include <linux/io.h> | |
e586e955 | 18 | #include <linux/of.h> |
78673bc8 | 19 | #include <linux/platform_device.h> |
5a0e3ad6 | 20 | #include <linux/slab.h> |
2203747c | 21 | #include <linux/platform_data/asoc-ti-mcbsp.h> |
25c7d49e | 22 | #include <linux/pm_runtime.h> |
78673bc8 | 23 | |
45c3eb7d | 24 | #include <linux/omap-dma.h> |
25c7d49e | 25 | |
b76c8b19 | 26 | #include "soc.h" |
25c7d49e | 27 | #include "omap_device.h" |
7a90da2a | 28 | #include "clock.h" |
4814ced5 | 29 | |
1743d14f JN |
30 | /* |
31 | * FIXME: Find a mechanism to enable/disable runtime the McBSP ICLK autoidle. | |
32 | * Sidetone needs non-gated ICLK and sidetone autoidle is broken. | |
33 | */ | |
d9a16f9a | 34 | #include "cm3xxx.h" |
1743d14f JN |
35 | #include "cm-regbits-34xx.h" |
36 | ||
53ae95f6 PU |
37 | static int omap3_mcbsp_force_ick_on(struct clk *clk, bool force_on) |
38 | { | |
39 | if (!clk) | |
40 | return 0; | |
41 | ||
42 | if (force_on) | |
43 | return omap2_clk_deny_idle(clk); | |
44 | else | |
45 | return omap2_clk_allow_idle(clk); | |
46 | } | |
47 | ||
c26c84c9 PU |
48 | void __init omap3_mcbsp_init_pdata_callback( |
49 | struct omap_mcbsp_platform_data *pdata) | |
50 | { | |
51 | if (!pdata) | |
52 | return; | |
53 | ||
54 | pdata->force_ick_on = omap3_mcbsp_force_ick_on; | |
55 | } | |
56 | ||
9cf793f9 | 57 | static int __init omap_init_mcbsp(struct omap_hwmod *oh, void *unused) |
64bcbd33 KVA |
58 | { |
59 | int id, count = 1; | |
60 | char *name = "omap-mcbsp"; | |
61 | struct omap_hwmod *oh_device[2]; | |
62 | struct omap_mcbsp_platform_data *pdata = NULL; | |
3528c58e | 63 | struct platform_device *pdev; |
3cf32bba | 64 | |
64bcbd33 | 65 | sscanf(oh->name, "mcbsp%d", &id); |
78673bc8 | 66 | |
64bcbd33 KVA |
67 | pdata = kzalloc(sizeof(struct omap_mcbsp_platform_data), GFP_KERNEL); |
68 | if (!pdata) { | |
69 | pr_err("%s: No memory for mcbsp\n", __func__); | |
70 | return -ENOMEM; | |
71 | } | |
3cf32bba | 72 | |
cdc71514 | 73 | pdata->reg_step = 4; |
88408230 | 74 | if (oh->class->rev < MCBSP_CONFIG_TYPE2) { |
cdc71514 | 75 | pdata->reg_size = 2; |
88408230 | 76 | } else { |
cdc71514 | 77 | pdata->reg_size = 4; |
88408230 JN |
78 | pdata->has_ccr = true; |
79 | } | |
9504ba64 | 80 | |
cafebc4a PU |
81 | if (oh->class->rev == MCBSP_CONFIG_TYPE2) { |
82 | /* The FIFO has 128 locations */ | |
83 | pdata->buffer_size = 0x80; | |
84 | } else if (oh->class->rev == MCBSP_CONFIG_TYPE3) { | |
64bcbd33 KVA |
85 | if (id == 2) |
86 | /* The FIFO has 1024 + 256 locations */ | |
87 | pdata->buffer_size = 0x500; | |
88 | else | |
89 | /* The FIFO has 128 locations */ | |
90 | pdata->buffer_size = 0x80; | |
da76250e PU |
91 | } else if (oh->class->rev == MCBSP_CONFIG_TYPE4) { |
92 | /* The FIFO has 128 locations for all instances */ | |
93 | pdata->buffer_size = 0x80; | |
64bcbd33 | 94 | } |
3cf32bba | 95 | |
1a645884 JN |
96 | if (oh->class->rev >= MCBSP_CONFIG_TYPE3) |
97 | pdata->has_wakeup = true; | |
98 | ||
64bcbd33 | 99 | oh_device[0] = oh; |
78673bc8 | 100 | |
64bcbd33 KVA |
101 | if (oh->dev_attr) { |
102 | oh_device[1] = omap_hwmod_lookup(( | |
103 | (struct omap_mcbsp_dev_attr *)(oh->dev_attr))->sidetone); | |
53ae95f6 | 104 | pdata->force_ick_on = omap3_mcbsp_force_ick_on; |
64bcbd33 KVA |
105 | count++; |
106 | } | |
3528c58e | 107 | pdev = omap_device_build_ss(name, id, oh_device, count, pdata, |
c1d1cd59 | 108 | sizeof(*pdata)); |
64bcbd33 | 109 | kfree(pdata); |
3528c58e | 110 | if (IS_ERR(pdev)) { |
25985edc | 111 | pr_err("%s: Can't build omap_device for %s:%s.\n", __func__, |
64bcbd33 | 112 | name, oh->name); |
3528c58e | 113 | return PTR_ERR(pdev); |
64bcbd33 | 114 | } |
64bcbd33 KVA |
115 | return 0; |
116 | } | |
a5b92cc3 | 117 | |
b4b58f58 | 118 | static int __init omap2_mcbsp_init(void) |
78673bc8 | 119 | { |
e586e955 PU |
120 | if (!of_have_populated_dt()) |
121 | omap_hwmod_for_each_by_class("mcbsp", omap_init_mcbsp, NULL); | |
b4b58f58 | 122 | |
0210dc4e | 123 | return 0; |
78673bc8 | 124 | } |
b76c8b19 | 125 | omap_arch_initcall(omap2_mcbsp_init); |