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authorLinus Torvalds <torvalds@linux-foundation.org>2011-03-24 12:50:13 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2011-03-24 12:50:13 -0400
commit76d21c563569bcea6bc67d65cc2c460cff643058 (patch)
tree4dd2c9846ea7838077099646418978e354df1680 /drivers/mfd
parent6e50e9f9f4a8277b4d76de417ca77cf3921bd524 (diff)
parent472af2b05bdefcaee7e754e22cbf131110017ad6 (diff)
Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (442 commits) [media] videobuf2-dma-contig: make cookie() return a pointer to dma_addr_t [media] sh_mobile_ceu_camera: Do not call vb2's mem_ops directly [media] V4L: soc-camera: explicitly require V4L2_BUF_TYPE_VIDEO_CAPTURE [media] v4l: soc-camera: Store negotiated buffer settings [media] rc: interim support for 32-bit NEC-ish scancodes [media] mceusb: topseed 0x0011 needs gen3 init for tx to work [media] lirc_zilog: error out if buffer read bytes != chunk size [media] lirc: silence some compile warnings [media] hdpvr: use same polling interval as other OS [media] ir-kbd-i2c: pass device code w/key in hauppauge case [media] rc/keymaps: Remove the obsolete rc-rc5-tv keymap [media] remove the old RC_MAP_HAUPPAUGE_NEW RC map [media] rc/keymaps: Rename Hauppauge table as rc-hauppauge [media] rc-rc5-hauppauge-new: Fix Hauppauge Grey mapping [media] rc-rc5-hauppauge-new: Add support for the old Black RC [media] rc-rc5-hauppauge-new: Add the old control to the table [media] rc-winfast: Fix the keycode tables [media] a800: Fix a few wrong IR key assignments [media] opera1: Use multimedia keys instead of an app-specific mapping [media] dw2102: Use multimedia keys instead of an app-specific mapping ... Fix up trivial conflicts (remove/modify and some real conflicts) in: arch/arm/mach-omap2/devices.c drivers/staging/Kconfig drivers/staging/Makefile drivers/staging/dabusb/dabusb.c drivers/staging/dabusb/dabusb.h drivers/staging/easycap/easycap_ioctl.c drivers/staging/usbvideo/usbvideo.c drivers/staging/usbvideo/vicam.c
Diffstat (limited to 'drivers/mfd')
-rw-r--r--drivers/mfd/Kconfig2
-rw-r--r--drivers/mfd/wl1273-core.c147
2 files changed, 147 insertions, 2 deletions
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 8d7d098f7a03..a9a1af49281e 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -666,7 +666,7 @@ config MFD_VX855
666 and/or vx855_gpio drivers for this to do anything useful. 666 and/or vx855_gpio drivers for this to do anything useful.
667 667
668config MFD_WL1273_CORE 668config MFD_WL1273_CORE
669 tristate 669 tristate "Support for TI WL1273 FM radio."
670 depends on I2C 670 depends on I2C
671 select MFD_CORE 671 select MFD_CORE
672 default n 672 default n
diff --git a/drivers/mfd/wl1273-core.c b/drivers/mfd/wl1273-core.c
index 529d65ba5353..f76f6c798046 100644
--- a/drivers/mfd/wl1273-core.c
+++ b/drivers/mfd/wl1273-core.c
@@ -1,7 +1,7 @@
1/* 1/*
2 * MFD driver for wl1273 FM radio and audio codec submodules. 2 * MFD driver for wl1273 FM radio and audio codec submodules.
3 * 3 *
4 * Copyright (C) 2010 Nokia Corporation 4 * Copyright (C) 2011 Nokia Corporation
5 * Author: Matti Aaltonen <matti.j.aaltonen@nokia.com> 5 * Author: Matti Aaltonen <matti.j.aaltonen@nokia.com>
6 * 6 *
7 * This program is free software; you can redistribute it and/or modify 7 * This program is free software; you can redistribute it and/or modify
@@ -31,6 +31,145 @@ static struct i2c_device_id wl1273_driver_id_table[] = {
31}; 31};
32MODULE_DEVICE_TABLE(i2c, wl1273_driver_id_table); 32MODULE_DEVICE_TABLE(i2c, wl1273_driver_id_table);
33 33
34static int wl1273_fm_read_reg(struct wl1273_core *core, u8 reg, u16 *value)
35{
36 struct i2c_client *client = core->client;
37 u8 b[2];
38 int r;
39
40 r = i2c_smbus_read_i2c_block_data(client, reg, sizeof(b), b);
41 if (r != 2) {
42 dev_err(&client->dev, "%s: Read: %d fails.\n", __func__, reg);
43 return -EREMOTEIO;
44 }
45
46 *value = (u16)b[0] << 8 | b[1];
47
48 return 0;
49}
50
51static int wl1273_fm_write_cmd(struct wl1273_core *core, u8 cmd, u16 param)
52{
53 struct i2c_client *client = core->client;
54 u8 buf[] = { (param >> 8) & 0xff, param & 0xff };
55 int r;
56
57 r = i2c_smbus_write_i2c_block_data(client, cmd, sizeof(buf), buf);
58 if (r) {
59 dev_err(&client->dev, "%s: Cmd: %d fails.\n", __func__, cmd);
60 return r;
61 }
62
63 return 0;
64}
65
66static int wl1273_fm_write_data(struct wl1273_core *core, u8 *data, u16 len)
67{
68 struct i2c_client *client = core->client;
69 struct i2c_msg msg;
70 int r;
71
72 msg.addr = client->addr;
73 msg.flags = 0;
74 msg.buf = data;
75 msg.len = len;
76
77 r = i2c_transfer(client->adapter, &msg, 1);
78 if (r != 1) {
79 dev_err(&client->dev, "%s: write error.\n", __func__);
80 return -EREMOTEIO;
81 }
82
83 return 0;
84}
85
86/**
87 * wl1273_fm_set_audio() - Set audio mode.
88 * @core: A pointer to the device struct.
89 * @new_mode: The new audio mode.
90 *
91 * Audio modes are WL1273_AUDIO_DIGITAL and WL1273_AUDIO_ANALOG.
92 */
93static int wl1273_fm_set_audio(struct wl1273_core *core, unsigned int new_mode)
94{
95 int r = 0;
96
97 if (core->mode == WL1273_MODE_OFF ||
98 core->mode == WL1273_MODE_SUSPENDED)
99 return -EPERM;
100
101 if (core->mode == WL1273_MODE_RX && new_mode == WL1273_AUDIO_DIGITAL) {
102 r = wl1273_fm_write_cmd(core, WL1273_PCM_MODE_SET,
103 WL1273_PCM_DEF_MODE);
104 if (r)
105 goto out;
106
107 r = wl1273_fm_write_cmd(core, WL1273_I2S_MODE_CONFIG_SET,
108 core->i2s_mode);
109 if (r)
110 goto out;
111
112 r = wl1273_fm_write_cmd(core, WL1273_AUDIO_ENABLE,
113 WL1273_AUDIO_ENABLE_I2S);
114 if (r)
115 goto out;
116
117 } else if (core->mode == WL1273_MODE_RX &&
118 new_mode == WL1273_AUDIO_ANALOG) {
119 r = wl1273_fm_write_cmd(core, WL1273_AUDIO_ENABLE,
120 WL1273_AUDIO_ENABLE_ANALOG);
121 if (r)
122 goto out;
123
124 } else if (core->mode == WL1273_MODE_TX &&
125 new_mode == WL1273_AUDIO_DIGITAL) {
126 r = wl1273_fm_write_cmd(core, WL1273_I2S_MODE_CONFIG_SET,
127 core->i2s_mode);
128 if (r)
129 goto out;
130
131 r = wl1273_fm_write_cmd(core, WL1273_AUDIO_IO_SET,
132 WL1273_AUDIO_IO_SET_I2S);
133 if (r)
134 goto out;
135
136 } else if (core->mode == WL1273_MODE_TX &&
137 new_mode == WL1273_AUDIO_ANALOG) {
138 r = wl1273_fm_write_cmd(core, WL1273_AUDIO_IO_SET,
139 WL1273_AUDIO_IO_SET_ANALOG);
140 if (r)
141 goto out;
142 }
143
144 core->audio_mode = new_mode;
145out:
146 return r;
147}
148
149/**
150 * wl1273_fm_set_volume() - Set volume.
151 * @core: A pointer to the device struct.
152 * @volume: The new volume value.
153 */
154static int wl1273_fm_set_volume(struct wl1273_core *core, unsigned int volume)
155{
156 u16 val;
157 int r;
158
159 if (volume > WL1273_MAX_VOLUME)
160 return -EINVAL;
161
162 if (core->volume == volume)
163 return 0;
164
165 r = wl1273_fm_write_cmd(core, WL1273_VOLUME_SET, volume);
166 if (r)
167 return r;
168
169 core->volume = volume;
170 return 0;
171}
172
34static int wl1273_core_remove(struct i2c_client *client) 173static int wl1273_core_remove(struct i2c_client *client)
35{ 174{
36 struct wl1273_core *core = i2c_get_clientdata(client); 175 struct wl1273_core *core = i2c_get_clientdata(client);
@@ -81,6 +220,12 @@ static int __devinit wl1273_core_probe(struct i2c_client *client,
81 cell->mfd_data = &core; 220 cell->mfd_data = &core;
82 children++; 221 children++;
83 222
223 core->read = wl1273_fm_read_reg;
224 core->write = wl1273_fm_write_cmd;
225 core->write_data = wl1273_fm_write_data;
226 core->set_audio = wl1273_fm_set_audio;
227 core->set_volume = wl1273_fm_set_volume;
228
84 if (pdata->children & WL1273_CODEC_CHILD) { 229 if (pdata->children & WL1273_CODEC_CHILD) {
85 cell = &core->cells[children]; 230 cell = &core->cells[children];
86 231