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authorLinus Torvalds <torvalds@linux-foundation.org>2011-03-24 09:50:13 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-03-24 09:50:13 -0700
commit76d21c563569bcea6bc67d65cc2c460cff643058 (patch)
tree4dd2c9846ea7838077099646418978e354df1680 /drivers/mfd
parent6e50e9f9f4a8277b4d76de417ca77cf3921bd524 (diff)
parent472af2b05bdefcaee7e754e22cbf131110017ad6 (diff)
downloadop-kernel-dev-76d21c563569bcea6bc67d65cc2c460cff643058.zip
op-kernel-dev-76d21c563569bcea6bc67d65cc2c460cff643058.tar.gz
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 8d7d098..a9a1af4 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -666,7 +666,7 @@ config MFD_VX855
and/or vx855_gpio drivers for this to do anything useful.
config MFD_WL1273_CORE
- tristate
+ tristate "Support for TI WL1273 FM radio."
depends on I2C
select MFD_CORE
default n
diff --git a/drivers/mfd/wl1273-core.c b/drivers/mfd/wl1273-core.c
index 529d65b..f76f6c7 100644
--- a/drivers/mfd/wl1273-core.c
+++ b/drivers/mfd/wl1273-core.c
@@ -1,7 +1,7 @@
/*
* MFD driver for wl1273 FM radio and audio codec submodules.
*
- * Copyright (C) 2010 Nokia Corporation
+ * Copyright (C) 2011 Nokia Corporation
* Author: Matti Aaltonen <matti.j.aaltonen@nokia.com>
*
* 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[] = {
};
MODULE_DEVICE_TABLE(i2c, wl1273_driver_id_table);
+static int wl1273_fm_read_reg(struct wl1273_core *core, u8 reg, u16 *value)
+{
+ struct i2c_client *client = core->client;
+ u8 b[2];
+ int r;
+
+ r = i2c_smbus_read_i2c_block_data(client, reg, sizeof(b), b);
+ if (r != 2) {
+ dev_err(&client->dev, "%s: Read: %d fails.\n", __func__, reg);
+ return -EREMOTEIO;
+ }
+
+ *value = (u16)b[0] << 8 | b[1];
+
+ return 0;
+}
+
+static int wl1273_fm_write_cmd(struct wl1273_core *core, u8 cmd, u16 param)
+{
+ struct i2c_client *client = core->client;
+ u8 buf[] = { (param >> 8) & 0xff, param & 0xff };
+ int r;
+
+ r = i2c_smbus_write_i2c_block_data(client, cmd, sizeof(buf), buf);
+ if (r) {
+ dev_err(&client->dev, "%s: Cmd: %d fails.\n", __func__, cmd);
+ return r;
+ }
+
+ return 0;
+}
+
+static int wl1273_fm_write_data(struct wl1273_core *core, u8 *data, u16 len)
+{
+ struct i2c_client *client = core->client;
+ struct i2c_msg msg;
+ int r;
+
+ msg.addr = client->addr;
+ msg.flags = 0;
+ msg.buf = data;
+ msg.len = len;
+
+ r = i2c_transfer(client->adapter, &msg, 1);
+ if (r != 1) {
+ dev_err(&client->dev, "%s: write error.\n", __func__);
+ return -EREMOTEIO;
+ }
+
+ return 0;
+}
+
+/**
+ * wl1273_fm_set_audio() - Set audio mode.
+ * @core: A pointer to the device struct.
+ * @new_mode: The new audio mode.
+ *
+ * Audio modes are WL1273_AUDIO_DIGITAL and WL1273_AUDIO_ANALOG.
+ */
+static int wl1273_fm_set_audio(struct wl1273_core *core, unsigned int new_mode)
+{
+ int r = 0;
+
+ if (core->mode == WL1273_MODE_OFF ||
+ core->mode == WL1273_MODE_SUSPENDED)
+ return -EPERM;
+
+ if (core->mode == WL1273_MODE_RX && new_mode == WL1273_AUDIO_DIGITAL) {
+ r = wl1273_fm_write_cmd(core, WL1273_PCM_MODE_SET,
+ WL1273_PCM_DEF_MODE);
+ if (r)
+ goto out;
+
+ r = wl1273_fm_write_cmd(core, WL1273_I2S_MODE_CONFIG_SET,
+ core->i2s_mode);
+ if (r)
+ goto out;
+
+ r = wl1273_fm_write_cmd(core, WL1273_AUDIO_ENABLE,
+ WL1273_AUDIO_ENABLE_I2S);
+ if (r)
+ goto out;
+
+ } else if (core->mode == WL1273_MODE_RX &&
+ new_mode == WL1273_AUDIO_ANALOG) {
+ r = wl1273_fm_write_cmd(core, WL1273_AUDIO_ENABLE,
+ WL1273_AUDIO_ENABLE_ANALOG);
+ if (r)
+ goto out;
+
+ } else if (core->mode == WL1273_MODE_TX &&
+ new_mode == WL1273_AUDIO_DIGITAL) {
+ r = wl1273_fm_write_cmd(core, WL1273_I2S_MODE_CONFIG_SET,
+ core->i2s_mode);
+ if (r)
+ goto out;
+
+ r = wl1273_fm_write_cmd(core, WL1273_AUDIO_IO_SET,
+ WL1273_AUDIO_IO_SET_I2S);
+ if (r)
+ goto out;
+
+ } else if (core->mode == WL1273_MODE_TX &&
+ new_mode == WL1273_AUDIO_ANALOG) {
+ r = wl1273_fm_write_cmd(core, WL1273_AUDIO_IO_SET,
+ WL1273_AUDIO_IO_SET_ANALOG);
+ if (r)
+ goto out;
+ }
+
+ core->audio_mode = new_mode;
+out:
+ return r;
+}
+
+/**
+ * wl1273_fm_set_volume() - Set volume.
+ * @core: A pointer to the device struct.
+ * @volume: The new volume value.
+ */
+static int wl1273_fm_set_volume(struct wl1273_core *core, unsigned int volume)
+{
+ u16 val;
+ int r;
+
+ if (volume > WL1273_MAX_VOLUME)
+ return -EINVAL;
+
+ if (core->volume == volume)
+ return 0;
+
+ r = wl1273_fm_write_cmd(core, WL1273_VOLUME_SET, volume);
+ if (r)
+ return r;
+
+ core->volume = volume;
+ return 0;
+}
+
static int wl1273_core_remove(struct i2c_client *client)
{
struct wl1273_core *core = i2c_get_clientdata(client);
@@ -81,6 +220,12 @@ static int __devinit wl1273_core_probe(struct i2c_client *client,
cell->mfd_data = &core;
children++;
+ core->read = wl1273_fm_read_reg;
+ core->write = wl1273_fm_write_cmd;
+ core->write_data = wl1273_fm_write_data;
+ core->set_audio = wl1273_fm_set_audio;
+ core->set_volume = wl1273_fm_set_volume;
+
if (pdata->children & WL1273_CODEC_CHILD) {
cell = &core->cells[children];
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