Commit | Line | Data |
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1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
ca26308c MA |
2 | /* |
3 | * DaVinci Voice Codec Core Interface for TI platforms | |
4 | * | |
5 | * Copyright (C) 2010 Texas Instruments, Inc | |
6 | * | |
7 | * Author: Miguel Aguilar <miguel.aguilar@ridgerun.com> | |
ca26308c MA |
8 | */ |
9 | ||
10 | #include <linux/init.h> | |
11 | #include <linux/module.h> | |
12 | #include <linux/device.h> | |
8c0d8fa2 | 13 | #include <linux/slab.h> |
ca26308c MA |
14 | #include <linux/delay.h> |
15 | #include <linux/io.h> | |
16 | #include <linux/clk.h> | |
921a2c87 | 17 | #include <linux/regmap.h> |
ca26308c MA |
18 | |
19 | #include <sound/pcm.h> | |
20 | ||
21 | #include <linux/mfd/davinci_voicecodec.h> | |
8ca9edc8 | 22 | #include <mach/hardware.h> |
ca26308c | 23 | |
b8d12eac | 24 | static const struct regmap_config davinci_vc_regmap = { |
921a2c87 MB |
25 | .reg_bits = 32, |
26 | .val_bits = 32, | |
27 | }; | |
28 | ||
ca26308c MA |
29 | static int __init davinci_vc_probe(struct platform_device *pdev) |
30 | { | |
31 | struct davinci_vc *davinci_vc; | |
c8eaed45 | 32 | struct resource *res; |
ca26308c MA |
33 | struct mfd_cell *cell = NULL; |
34 | int ret; | |
35 | ||
099053a4 LJ |
36 | davinci_vc = devm_kzalloc(&pdev->dev, |
37 | sizeof(struct davinci_vc), GFP_KERNEL); | |
9fb41166 | 38 | if (!davinci_vc) |
ca26308c | 39 | return -ENOMEM; |
ca26308c | 40 | |
c8eaed45 | 41 | davinci_vc->clk = devm_clk_get(&pdev->dev, NULL); |
ca26308c MA |
42 | if (IS_ERR(davinci_vc->clk)) { |
43 | dev_dbg(&pdev->dev, | |
44 | "could not get the clock for voice codec\n"); | |
099053a4 | 45 | return -ENODEV; |
ca26308c MA |
46 | } |
47 | clk_enable(davinci_vc->clk); | |
48 | ||
49 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
ca26308c | 50 | |
c8eaed45 SK |
51 | davinci_vc->base = devm_ioremap_resource(&pdev->dev, res); |
52 | if (IS_ERR(davinci_vc->base)) { | |
53 | ret = PTR_ERR(davinci_vc->base); | |
54 | goto fail; | |
ca26308c MA |
55 | } |
56 | ||
921a2c87 MB |
57 | davinci_vc->regmap = devm_regmap_init_mmio(&pdev->dev, |
58 | davinci_vc->base, | |
59 | &davinci_vc_regmap); | |
60 | if (IS_ERR(davinci_vc->regmap)) { | |
61 | ret = PTR_ERR(davinci_vc->regmap); | |
62 | goto fail; | |
63 | } | |
64 | ||
ca26308c MA |
65 | res = platform_get_resource(pdev, IORESOURCE_DMA, 0); |
66 | if (!res) { | |
67 | dev_err(&pdev->dev, "no DMA resource\n"); | |
e2bde787 | 68 | ret = -ENXIO; |
c8eaed45 | 69 | goto fail; |
ca26308c MA |
70 | } |
71 | ||
72 | davinci_vc->davinci_vcif.dma_tx_channel = res->start; | |
73 | davinci_vc->davinci_vcif.dma_tx_addr = | |
74 | (dma_addr_t)(io_v2p(davinci_vc->base) + DAVINCI_VC_WFIFO); | |
75 | ||
76 | res = platform_get_resource(pdev, IORESOURCE_DMA, 1); | |
77 | if (!res) { | |
78 | dev_err(&pdev->dev, "no DMA resource\n"); | |
e2bde787 | 79 | ret = -ENXIO; |
c8eaed45 | 80 | goto fail; |
ca26308c MA |
81 | } |
82 | ||
83 | davinci_vc->davinci_vcif.dma_rx_channel = res->start; | |
84 | davinci_vc->davinci_vcif.dma_rx_addr = | |
85 | (dma_addr_t)(io_v2p(davinci_vc->base) + DAVINCI_VC_RFIFO); | |
86 | ||
87 | davinci_vc->dev = &pdev->dev; | |
88 | davinci_vc->pdev = pdev; | |
89 | ||
90 | /* Voice codec interface client */ | |
91 | cell = &davinci_vc->cells[DAVINCI_VC_VCIF_CELL]; | |
73ee6524 | 92 | cell->name = "davinci-vcif"; |
cb5811cf SO |
93 | cell->platform_data = davinci_vc; |
94 | cell->pdata_size = sizeof(*davinci_vc); | |
ca26308c MA |
95 | |
96 | /* Voice codec CQ93VC client */ | |
97 | cell = &davinci_vc->cells[DAVINCI_VC_CQ93VC_CELL]; | |
73ee6524 | 98 | cell->name = "cq93vc-codec"; |
cb5811cf SO |
99 | cell->platform_data = davinci_vc; |
100 | cell->pdata_size = sizeof(*davinci_vc); | |
ca26308c MA |
101 | |
102 | ret = mfd_add_devices(&pdev->dev, pdev->id, davinci_vc->cells, | |
0848c94f | 103 | DAVINCI_VC_CELLS, NULL, 0, NULL); |
ca26308c MA |
104 | if (ret != 0) { |
105 | dev_err(&pdev->dev, "fail to register client devices\n"); | |
c8eaed45 | 106 | goto fail; |
ca26308c MA |
107 | } |
108 | ||
109 | return 0; | |
110 | ||
c8eaed45 | 111 | fail: |
ca26308c | 112 | clk_disable(davinci_vc->clk); |
ca26308c MA |
113 | |
114 | return ret; | |
115 | } | |
116 | ||
4740f73f | 117 | static int davinci_vc_remove(struct platform_device *pdev) |
ca26308c MA |
118 | { |
119 | struct davinci_vc *davinci_vc = platform_get_drvdata(pdev); | |
120 | ||
121 | mfd_remove_devices(&pdev->dev); | |
122 | ||
ca26308c | 123 | clk_disable(davinci_vc->clk); |
ca26308c | 124 | |
ca26308c MA |
125 | return 0; |
126 | } | |
127 | ||
128 | static struct platform_driver davinci_vc_driver = { | |
129 | .driver = { | |
130 | .name = "davinci_voicecodec", | |
ca26308c | 131 | }, |
84449216 | 132 | .remove = davinci_vc_remove, |
ca26308c MA |
133 | }; |
134 | ||
3de764d4 | 135 | module_platform_driver_probe(davinci_vc_driver, davinci_vc_probe); |
ca26308c MA |
136 | |
137 | MODULE_AUTHOR("Miguel Aguilar"); | |
138 | MODULE_DESCRIPTION("Texas Instruments DaVinci Voice Codec Core Interface"); | |
139 | MODULE_LICENSE("GPL"); |