[media] MFD: WL1273 FM Radio: MFD driver for the FM radio
This is the core of the WL1273 FM radio driver, it connects the two child modules. The two child drivers are drivers/media/radio/radio-wl1273.c and sound/soc/codecs/wl1273.c. The radio-wl1273 driver implements the V4L2 interface and communicates with the device. The ALSA codec offers digital audio, without it only analog audio is available. Signed-off-by: Matti J. Aaltonen <matti.j.aaltonen@nokia.com> Acked-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Matti Aaltonen
Mauro Carvalho Chehab
parent
00765f16f1
commit
383268a8e2
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@ -606,6 +606,16 @@ config MFD_VX855
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VIA VX855/VX875 south bridge. You will need to enable the vx855_spi
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and/or vx855_gpio drivers for this to do anything useful.
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config MFD_WL1273_CORE
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tristate
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depends on I2C
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select MFD_CORE
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default n
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help
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This is the core driver for the TI WL1273 FM radio. This MFD
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driver connects the radio-wl1273 V4L2 module and the wl1273
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audio codec.
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endif # MFD_SUPPORT
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menu "Multimedia Capabilities Port drivers"
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@ -81,3 +81,4 @@ obj-$(CONFIG_MFD_JANZ_CMODIO) += janz-cmodio.o
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obj-$(CONFIG_MFD_JZ4740_ADC) += jz4740-adc.o
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obj-$(CONFIG_MFD_TPS6586X) += tps6586x.o
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obj-$(CONFIG_MFD_VX855) += vx855.o
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obj-$(CONFIG_MFD_WL1273_CORE) += wl1273-core.o
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@ -0,0 +1,148 @@
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/*
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* MFD driver for wl1273 FM radio and audio codec submodules.
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*
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* Copyright (C) 2010 Nokia Corporation
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* Author: Matti Aaltonen <matti.j.aaltonen@nokia.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*
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*/
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#include <linux/mfd/wl1273-core.h>
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#include <linux/slab.h>
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#define DRIVER_DESC "WL1273 FM Radio Core"
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static struct i2c_device_id wl1273_driver_id_table[] = {
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{ WL1273_FM_DRIVER_NAME, 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, wl1273_driver_id_table);
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static int wl1273_core_remove(struct i2c_client *client)
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{
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struct wl1273_core *core = i2c_get_clientdata(client);
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dev_dbg(&client->dev, "%s\n", __func__);
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mfd_remove_devices(&client->dev);
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i2c_set_clientdata(client, NULL);
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kfree(core);
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return 0;
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}
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static int __devinit wl1273_core_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct wl1273_fm_platform_data *pdata = client->dev.platform_data;
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struct wl1273_core *core;
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struct mfd_cell *cell;
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int children = 0;
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int r = 0;
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dev_dbg(&client->dev, "%s\n", __func__);
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if (!pdata) {
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dev_err(&client->dev, "No platform data.\n");
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return -EINVAL;
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}
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if (!(pdata->children & WL1273_RADIO_CHILD)) {
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dev_err(&client->dev, "Cannot function without radio child.\n");
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return -EINVAL;
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}
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core = kzalloc(sizeof(*core), GFP_KERNEL);
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if (!core)
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return -ENOMEM;
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core->pdata = pdata;
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core->client = client;
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mutex_init(&core->lock);
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i2c_set_clientdata(client, core);
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dev_dbg(&client->dev, "%s: Have V4L2.\n", __func__);
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cell = &core->cells[children];
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cell->name = "wl1273_fm_radio";
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cell->platform_data = &core;
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cell->data_size = sizeof(core);
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children++;
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if (pdata->children & WL1273_CODEC_CHILD) {
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cell = &core->cells[children];
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dev_dbg(&client->dev, "%s: Have codec.\n", __func__);
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cell->name = "wl1273-codec";
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cell->platform_data = &core;
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cell->data_size = sizeof(core);
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children++;
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}
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dev_dbg(&client->dev, "%s: number of children: %d.\n",
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__func__, children);
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r = mfd_add_devices(&client->dev, -1, core->cells,
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children, NULL, 0);
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if (r)
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goto err;
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return 0;
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err:
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i2c_set_clientdata(client, NULL);
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pdata->free_resources();
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kfree(core);
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dev_dbg(&client->dev, "%s\n", __func__);
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return r;
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}
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static struct i2c_driver wl1273_core_driver = {
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.driver = {
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.name = WL1273_FM_DRIVER_NAME,
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},
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.probe = wl1273_core_probe,
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.id_table = wl1273_driver_id_table,
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.remove = __devexit_p(wl1273_core_remove),
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};
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static int __init wl1273_core_init(void)
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{
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int r;
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r = i2c_add_driver(&wl1273_core_driver);
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if (r) {
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pr_err(WL1273_FM_DRIVER_NAME
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": driver registration failed\n");
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return r;
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}
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return r;
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}
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static void __exit wl1273_core_exit(void)
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{
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i2c_del_driver(&wl1273_core_driver);
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}
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late_initcall(wl1273_core_init);
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module_exit(wl1273_core_exit);
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MODULE_AUTHOR("Matti Aaltonen <matti.j.aaltonen@nokia.com>");
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MODULE_DESCRIPTION(DRIVER_DESC);
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MODULE_LICENSE("GPL");
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@ -0,0 +1,288 @@
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/*
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* include/linux/mfd/wl1273-core.h
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*
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* Some definitions for the wl1273 radio receiver/transmitter chip.
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*
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* Copyright (C) 2010 Nokia Corporation
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* Author: Matti J. Aaltonen <matti.j.aaltonen@nokia.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*/
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#ifndef WL1273_CORE_H
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#define WL1273_CORE_H
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#include <linux/i2c.h>
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#include <linux/mfd/core.h>
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#define WL1273_FM_DRIVER_NAME "wl1273-fm"
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#define RX71_FM_I2C_ADDR 0x22
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#define WL1273_STEREO_GET 0
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#define WL1273_RSSI_LVL_GET 1
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#define WL1273_IF_COUNT_GET 2
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#define WL1273_FLAG_GET 3
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#define WL1273_RDS_SYNC_GET 4
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#define WL1273_RDS_DATA_GET 5
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#define WL1273_FREQ_SET 10
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#define WL1273_AF_FREQ_SET 11
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#define WL1273_MOST_MODE_SET 12
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#define WL1273_MOST_BLEND_SET 13
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#define WL1273_DEMPH_MODE_SET 14
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#define WL1273_SEARCH_LVL_SET 15
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#define WL1273_BAND_SET 16
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#define WL1273_MUTE_STATUS_SET 17
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#define WL1273_RDS_PAUSE_LVL_SET 18
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#define WL1273_RDS_PAUSE_DUR_SET 19
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#define WL1273_RDS_MEM_SET 20
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#define WL1273_RDS_BLK_B_SET 21
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#define WL1273_RDS_MSK_B_SET 22
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#define WL1273_RDS_PI_MASK_SET 23
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#define WL1273_RDS_PI_SET 24
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#define WL1273_RDS_SYSTEM_SET 25
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#define WL1273_INT_MASK_SET 26
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#define WL1273_SEARCH_DIR_SET 27
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#define WL1273_VOLUME_SET 28
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#define WL1273_AUDIO_ENABLE 29
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#define WL1273_PCM_MODE_SET 30
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#define WL1273_I2S_MODE_CONFIG_SET 31
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#define WL1273_POWER_SET 32
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#define WL1273_INTX_CONFIG_SET 33
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#define WL1273_PULL_EN_SET 34
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#define WL1273_HILO_SET 35
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#define WL1273_SWITCH2FREF 36
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#define WL1273_FREQ_DRIFT_REPORT 37
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#define WL1273_PCE_GET 40
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#define WL1273_FIRM_VER_GET 41
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#define WL1273_ASIC_VER_GET 42
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#define WL1273_ASIC_ID_GET 43
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#define WL1273_MAN_ID_GET 44
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#define WL1273_TUNER_MODE_SET 45
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#define WL1273_STOP_SEARCH 46
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#define WL1273_RDS_CNTRL_SET 47
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#define WL1273_WRITE_HARDWARE_REG 100
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#define WL1273_CODE_DOWNLOAD 101
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#define WL1273_RESET 102
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#define WL1273_FM_POWER_MODE 254
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#define WL1273_FM_INTERRUPT 255
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/* Transmitter API */
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#define WL1273_CHANL_SET 55
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#define WL1273_SCAN_SPACING_SET 56
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#define WL1273_REF_SET 57
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#define WL1273_POWER_ENB_SET 90
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#define WL1273_POWER_ATT_SET 58
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#define WL1273_POWER_LEV_SET 59
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#define WL1273_AUDIO_DEV_SET 60
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#define WL1273_PILOT_DEV_SET 61
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#define WL1273_RDS_DEV_SET 62
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#define WL1273_PUPD_SET 91
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#define WL1273_AUDIO_IO_SET 63
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#define WL1273_PREMPH_SET 64
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#define WL1273_MONO_SET 66
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#define WL1273_MUTE 92
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#define WL1273_MPX_LMT_ENABLE 67
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#define WL1273_PI_SET 93
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#define WL1273_ECC_SET 69
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#define WL1273_PTY 70
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#define WL1273_AF 71
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#define WL1273_DISPLAY_MODE 74
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#define WL1273_RDS_REP_SET 77
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#define WL1273_RDS_CONFIG_DATA_SET 98
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#define WL1273_RDS_DATA_SET 99
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#define WL1273_RDS_DATA_ENB 94
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#define WL1273_TA_SET 78
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#define WL1273_TP_SET 79
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#define WL1273_DI_SET 80
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#define WL1273_MS_SET 81
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#define WL1273_PS_SCROLL_SPEED 82
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#define WL1273_TX_AUDIO_LEVEL_TEST 96
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#define WL1273_TX_AUDIO_LEVEL_TEST_THRESHOLD 73
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#define WL1273_TX_AUDIO_INPUT_LEVEL_RANGE_SET 54
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#define WL1273_RX_ANTENNA_SELECT 87
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#define WL1273_I2C_DEV_ADDR_SET 86
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#define WL1273_REF_ERR_CALIB_PARAM_SET 88
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#define WL1273_REF_ERR_CALIB_PERIODICITY_SET 89
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#define WL1273_SOC_INT_TRIGGER 52
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#define WL1273_SOC_AUDIO_PATH_SET 83
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#define WL1273_SOC_PCMI_OVERRIDE 84
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#define WL1273_SOC_I2S_OVERRIDE 85
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#define WL1273_RSSI_BLOCK_SCAN_FREQ_SET 95
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#define WL1273_RSSI_BLOCK_SCAN_START 97
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#define WL1273_RSSI_BLOCK_SCAN_DATA_GET 5
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#define WL1273_READ_FMANT_TUNE_VALUE 104
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#define WL1273_RDS_OFF 0
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#define WL1273_RDS_ON 1
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#define WL1273_RDS_RESET 2
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#define WL1273_AUDIO_DIGITAL 0
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#define WL1273_AUDIO_ANALOG 1
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#define WL1273_MODE_RX BIT(0)
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#define WL1273_MODE_TX BIT(1)
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#define WL1273_MODE_OFF BIT(2)
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#define WL1273_MODE_SUSPENDED BIT(3)
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#define WL1273_RADIO_CHILD BIT(0)
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#define WL1273_CODEC_CHILD BIT(1)
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#define WL1273_RX_MONO 1
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#define WL1273_RX_STEREO 0
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#define WL1273_TX_MONO 0
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#define WL1273_TX_STEREO 1
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#define WL1273_MAX_VOLUME 0xffff
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#define WL1273_DEFAULT_VOLUME 0x78b8
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/* I2S protocol, left channel first, data width 16 bits */
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#define WL1273_PCM_DEF_MODE 0x00
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/* Rx */
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#define WL1273_AUDIO_ENABLE_I2S BIT(0)
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#define WL1273_AUDIO_ENABLE_ANALOG BIT(1)
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/* Tx */
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#define WL1273_AUDIO_IO_SET_ANALOG 0
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#define WL1273_AUDIO_IO_SET_I2S 1
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#define WL1273_PUPD_SET_OFF 0x00
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#define WL1273_PUPD_SET_ON 0x01
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#define WL1273_PUPD_SET_RETENTION 0x10
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/* I2S mode */
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#define WL1273_IS2_WIDTH_32 0x0
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#define WL1273_IS2_WIDTH_40 0x1
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#define WL1273_IS2_WIDTH_22_23 0x2
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#define WL1273_IS2_WIDTH_23_22 0x3
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#define WL1273_IS2_WIDTH_48 0x4
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#define WL1273_IS2_WIDTH_50 0x5
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#define WL1273_IS2_WIDTH_60 0x6
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#define WL1273_IS2_WIDTH_64 0x7
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#define WL1273_IS2_WIDTH_80 0x8
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#define WL1273_IS2_WIDTH_96 0x9
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#define WL1273_IS2_WIDTH_128 0xa
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#define WL1273_IS2_WIDTH 0xf
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#define WL1273_IS2_FORMAT_STD (0x0 << 4)
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#define WL1273_IS2_FORMAT_LEFT (0x1 << 4)
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#define WL1273_IS2_FORMAT_RIGHT (0x2 << 4)
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#define WL1273_IS2_FORMAT_USER (0x3 << 4)
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#define WL1273_IS2_MASTER (0x0 << 6)
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#define WL1273_IS2_SLAVEW (0x1 << 6)
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#define WL1273_IS2_TRI_AFTER_SENDING (0x0 << 7)
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#define WL1273_IS2_TRI_ALWAYS_ACTIVE (0x1 << 7)
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#define WL1273_IS2_SDOWS_RR (0x0 << 8)
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#define WL1273_IS2_SDOWS_RF (0x1 << 8)
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#define WL1273_IS2_SDOWS_FR (0x2 << 8)
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#define WL1273_IS2_SDOWS_FF (0x3 << 8)
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#define WL1273_IS2_TRI_OPT (0x0 << 10)
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#define WL1273_IS2_TRI_ALWAYS (0x1 << 10)
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#define WL1273_IS2_RATE_48K (0x0 << 12)
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#define WL1273_IS2_RATE_44_1K (0x1 << 12)
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#define WL1273_IS2_RATE_32K (0x2 << 12)
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#define WL1273_IS2_RATE_22_05K (0x4 << 12)
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#define WL1273_IS2_RATE_16K (0x5 << 12)
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#define WL1273_IS2_RATE_12K (0x8 << 12)
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#define WL1273_IS2_RATE_11_025 (0x9 << 12)
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#define WL1273_IS2_RATE_8K (0xa << 12)
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#define WL1273_IS2_RATE (0xf << 12)
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#define WL1273_I2S_DEF_MODE (WL1273_IS2_WIDTH_32 | \
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WL1273_IS2_FORMAT_STD | \
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WL1273_IS2_MASTER | \
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WL1273_IS2_TRI_AFTER_SENDING | \
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WL1273_IS2_SDOWS_RR | \
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WL1273_IS2_TRI_OPT | \
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WL1273_IS2_RATE_48K)
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#define SCHAR_MIN (-128)
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#define SCHAR_MAX 127
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#define WL1273_FR_EVENT BIT(0)
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#define WL1273_BL_EVENT BIT(1)
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#define WL1273_RDS_EVENT BIT(2)
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#define WL1273_BBLK_EVENT BIT(3)
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#define WL1273_LSYNC_EVENT BIT(4)
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#define WL1273_LEV_EVENT BIT(5)
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#define WL1273_IFFR_EVENT BIT(6)
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#define WL1273_PI_EVENT BIT(7)
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#define WL1273_PD_EVENT BIT(8)
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#define WL1273_STIC_EVENT BIT(9)
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#define WL1273_MAL_EVENT BIT(10)
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#define WL1273_POW_ENB_EVENT BIT(11)
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#define WL1273_SCAN_OVER_EVENT BIT(12)
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#define WL1273_ERROR_EVENT BIT(13)
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#define TUNER_MODE_STOP_SEARCH 0
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#define TUNER_MODE_PRESET 1
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#define TUNER_MODE_AUTO_SEEK 2
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#define TUNER_MODE_AF 3
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#define TUNER_MODE_AUTO_SEEK_PI 4
|
||||
#define TUNER_MODE_AUTO_SEEK_BULK 5
|
||||
|
||||
#define RDS_BLOCK_SIZE 3
|
||||
|
||||
struct wl1273_fm_platform_data {
|
||||
int (*request_resources) (struct i2c_client *client);
|
||||
void (*free_resources) (void);
|
||||
void (*enable) (void);
|
||||
void (*disable) (void);
|
||||
|
||||
u8 forbidden_modes;
|
||||
unsigned int children;
|
||||
};
|
||||
|
||||
#define WL1273_FM_CORE_CELLS 2
|
||||
|
||||
#define WL1273_BAND_OTHER 0
|
||||
#define WL1273_BAND_JAPAN 1
|
||||
|
||||
#define WL1273_BAND_JAPAN_LOW 76000
|
||||
#define WL1273_BAND_JAPAN_HIGH 90000
|
||||
#define WL1273_BAND_OTHER_LOW 87500
|
||||
#define WL1273_BAND_OTHER_HIGH 108000
|
||||
|
||||
#define WL1273_BAND_TX_LOW 76000
|
||||
#define WL1273_BAND_TX_HIGH 108000
|
||||
|
||||
struct wl1273_core {
|
||||
struct mfd_cell cells[WL1273_FM_CORE_CELLS];
|
||||
struct wl1273_fm_platform_data *pdata;
|
||||
|
||||
unsigned int mode;
|
||||
unsigned int i2s_mode;
|
||||
unsigned int volume;
|
||||
unsigned int audio_mode;
|
||||
unsigned int channel_number;
|
||||
struct mutex lock; /* for serializing fm radio operations */
|
||||
|
||||
struct i2c_client *client;
|
||||
|
||||
int (*write)(struct wl1273_core *core, u8, u16);
|
||||
int (*set_audio)(struct wl1273_core *core, unsigned int);
|
||||
int (*set_volume)(struct wl1273_core *core, unsigned int);
|
||||
};
|
||||
|
||||
#endif /* ifndef WL1273_CORE_H */
|
||||
Loading…
Reference in New Issue