This is the core of the WL1273 FM radio driver, it connects
the two child modules.
This is a parent for two child drivers:
drivers/media/radio/radio-wl1273.c and sound/soc/codecs/wl1273.c
Radio-wl1273 implements the V4L2 interface and the communication to the device.
The ALSA codec is for digital audio. Without the codec only analog audio
is available.
Signed-off-by: Matti J. Aaltonen <matti.j.aaltonen@xxxxxxxxx>
---
drivers/mfd/Kconfig | 6 +
drivers/mfd/Makefile | 1 +
drivers/mfd/wl1273-core.c | 154 ++++++++++++++++++++
include/linux/mfd/wl1273-core.h | 298 +++++++++++++++++++++++++++++++++++++++
4 files changed, 459 insertions(+), 0 deletions(-)
create mode 100644 drivers/mfd/wl1273-core.c
create mode 100644 include/linux/mfd/wl1273-core.h
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 3a1493b..04c76c9 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -606,6 +606,12 @@ config MFD_VX855
VIA VX855/VX875 south bridge. You will need to enable the vx855_spi
and/or vx855_gpio drivers for this to do anything useful.
+config WL1273_CORE
+ tristate
+ depends on I2C
+ select MFD_CORE
+ default n
+
endif # MFD_SUPPORT
menu "Multimedia Capabilities Port drivers"
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index f54b365..0d549b4 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -81,3 +81,4 @@ obj-$(CONFIG_MFD_JANZ_CMODIO) += janz-cmodio.o
obj-$(CONFIG_MFD_JZ4740_ADC) += jz4740-adc.o
obj-$(CONFIG_MFD_TPS6586X) += tps6586x.o
obj-$(CONFIG_MFD_VX855) += vx855.o
+obj-$(CONFIG_WL1273_CORE) += wl1273-core.o
diff --git a/drivers/mfd/wl1273-core.c b/drivers/mfd/wl1273-core.c
new file mode 100644
index 0000000..c900f35
--- /dev/null
+++ b/drivers/mfd/wl1273-core.c
@@ -0,0 +1,154 @@
+/*
+ * MFD driver for wl1273 FM radio and audio codec submodules.
+ *
+ * Author: Matti Aaltonen <matti.j.aaltonen@xxxxxxxxx>
+ *
+ * Copyright: (C) 2010 Nokia Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/delay.h>
+#include <linux/mfd/wl1273-core.h>
+#include <linux/slab.h>
+#include <media/v4l2-common.h>
+
+#define DRIVER_DESC "WL1273 FM Radio Core"
+
+static struct i2c_device_id wl1273_driver_id_table[] = {
+ { WL1273_FM_DRIVER_NAME, 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, wl1273_driver_id_table);
+
+static int wl1273_core_remove(struct i2c_client *client)
+{
+ struct wl1273_core *core = i2c_get_clientdata(client);
+
+ dev_dbg(&client->dev, "%s\n", __func__);
+
+ mfd_remove_devices(&client->dev);
+ i2c_set_clientdata(client, NULL);
+ kfree(core);
+
+ return 0;
+}
+
+static int __devinit wl1273_core_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct wl1273_fm_platform_data *pdata = client->dev.platform_data;
+ int r = 0;
+ struct wl1273_core *core;
+ int children = 0;
+
+ dev_dbg(&client->dev, "%s\n", __func__);
+
+ if (!pdata) {
+ dev_err(&client->dev, "No platform data.\n");
+ return -EINVAL;
+ }
+
+ core = kzalloc(sizeof(*core), GFP_KERNEL);
+ if (!core)
+ return -ENOMEM;
+
+ core->pdata = pdata;
+ core->client = client;
+ mutex_init(&core->lock);
+
+ i2c_set_clientdata(client, core);
+
+ /* the radio child must be first */
+ if (pdata->children & WL1273_RADIO_CHILD) {
+ struct mfd_cell *cell = &core->cells[children];
+ dev_dbg(&client->dev, "%s: Have V4L2.\n", __func__);
+ cell->name = "wl1273_fm_radio";
+ cell->platform_data = &core;
+ cell->data_size = sizeof(core);
+ children++;
+ } else {
+ dev_err(&client->dev, "Cannot function without radio child.\n");
+ r = -EINVAL;
+ goto err_radio_child;
+ }
+
+ if (pdata->children & WL1273_CODEC_CHILD) {
+ struct mfd_cell *cell = &core->cells[children];
+ dev_dbg(&client->dev, "%s: Have codec.\n", __func__);
+ cell->name = "wl1273-codec";
+ cell->platform_data = &core;
+ cell->data_size = sizeof(core);
+ children++;
+ }
+
+ if (children) {
+ dev_dbg(&client->dev, "%s: Have children.\n", __func__);
+ r = mfd_add_devices(&client->dev, -1, core->cells,
+ children, NULL, 0);
+ } else {
+ dev_err(&client->dev, "No platform data found for children.\n");
+ r = -ENODEV;
+ }
+
+ if (!r)
+ return 0;
+
+err_radio_child:
+ i2c_set_clientdata(client, NULL);
+ pdata->free_resources();
+ kfree(core);
+
+ dev_dbg(&client->dev, "%s\n", __func__);
+
+ return r;
+}
+
+static struct i2c_driver wl1273_core_driver = {
+ .driver = {
+ .name = WL1273_FM_DRIVER_NAME,
+ },
+ .probe = wl1273_core_probe,
+ .id_table = wl1273_driver_id_table,
+ .remove = __devexit_p(wl1273_core_remove),
+};
+
+static int __init wl1273_core_init(void)
+{
+ int r;
+
+ r = i2c_add_driver(&wl1273_core_driver);
+ if (r) {
+ pr_err(WL1273_FM_DRIVER_NAME
+ ": driver registration failed\n");
+ return r;
+ }
+
+ return 0;
+}
+
+static void __exit wl1273_core_exit(void)
+{
+ flush_scheduled_work();
+
+ i2c_del_driver(&wl1273_core_driver);
+}
+late_initcall(wl1273_core_init);
+module_exit(wl1273_core_exit);
+
+MODULE_AUTHOR("Matti Aaltonen <matti.j.aaltonen@xxxxxxxxx>");
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
diff --git a/include/linux/mfd/wl1273-core.h b/include/linux/mfd/wl1273-core.h
new file mode 100644
index 0000000..c2c44dc
--- /dev/null
+++ b/include/linux/mfd/wl1273-core.h
@@ -0,0 +1,298 @@
+/*
+ * include/media/radio/radio-wl1273.h
+ *
+ * Some definitions for the wl1273 radio receiver/transmitter chip.
+ *
+ * Copyright (C) Nokia Corporation
+ * Author: Matti J. Aaltonen <matti.j.aaltonen@xxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+#ifndef RADIO_WL1273_H
+#define RADIO_WL1273_H
+
+#include <linux/i2c.h>
+#include <linux/mfd/core.h>
+
+#define WL1273_FM_DRIVER_NAME "wl1273-fm"
+#define RX71_FM_I2C_ADDR 0x22
+
+#define WL1273_STEREO_GET 0
+#define WL1273_RSSI_LVL_GET 1
+#define WL1273_IF_COUNT_GET 2
+#define WL1273_FLAG_GET 3
+#define WL1273_RDS_SYNC_GET 4
+#define WL1273_RDS_DATA_GET 5
+#define WL1273_FREQ_SET 10
+#define WL1273_AF_FREQ_SET 11
+#define WL1273_MOST_MODE_SET 12
+#define WL1273_MOST_BLEND_SET 13
+#define WL1273_DEMPH_MODE_SET 14
+#define WL1273_SEARCH_LVL_SET 15
+#define WL1273_BAND_SET 16
+#define WL1273_MUTE_STATUS_SET 17
+#define WL1273_RDS_PAUSE_LVL_SET 18
+#define WL1273_RDS_PAUSE_DUR_SET 19
+#define WL1273_RDS_MEM_SET 20
+#define WL1273_RDS_BLK_B_SET 21
+#define WL1273_RDS_MSK_B_SET 22
+#define WL1273_RDS_PI_MASK_SET 23
+#define WL1273_RDS_PI_SET 24
+#define WL1273_RDS_SYSTEM_SET 25
+#define WL1273_INT_MASK_SET 26
+#define WL1273_SEARCH_DIR_SET 27
+#define WL1273_VOLUME_SET 28
+#define WL1273_AUDIO_ENABLE 29
+#define WL1273_PCM_MODE_SET 30
+#define WL1273_I2S_MODE_CONFIG_SET 31
+#define WL1273_POWER_SET 32
+#define WL1273_INTX_CONFIG_SET 33
+#define WL1273_PULL_EN_SET 34
+#define WL1273_HILO_SET 35
+#define WL1273_SWITCH2FREF 36
+#define WL1273_FREQ_DRIFT_REPORT 37
+
+#define WL1273_PCE_GET 40
+#define WL1273_FIRM_VER_GET 41
+#define WL1273_ASIC_VER_GET 42
+#define WL1273_ASIC_ID_GET 43
+#define WL1273_MAN_ID_GET 44
+#define WL1273_TUNER_MODE_SET 45
+#define WL1273_STOP_SEARCH 46
+#define WL1273_RDS_CNTRL_SET 47
+
+#define WL1273_WRITE_HARDWARE_REG 100
+#define WL1273_CODE_DOWNLOAD 101
+#define WL1273_RESET 102
+
+#define WL1273_FM_POWER_MODE 254
+#define WL1273_FM_INTERRUPT 255
+
+/* Transmitter API */
+
+#define WL1273_CHANL_SET 55
+#define WL1273_SCAN_SPACING_SET 56
+#define WL1273_REF_SET 57
+#define WL1273_POWER_ENB_SET 90
+#define WL1273_POWER_ATT_SET 58
+#define WL1273_POWER_LEV_SET 59
+#define WL1273_AUDIO_DEV_SET 60
+#define WL1273_PILOT_DEV_SET 61
+#define WL1273_RDS_DEV_SET 62
+#define WL1273_PUPD_SET 91
+#define WL1273_AUDIO_IO_SET 63
+#define WL1273_PREMPH_SET 64
+#define WL1273_MONO_SET 66
+#define WL1273_MUTE 92
+#define WL1273_MPX_LMT_ENABLE 67
+#define WL1273_PI_SET 93
+#define WL1273_ECC_SET 69
+#define WL1273_PTY 70
+#define WL1273_AF 71
+#define WL1273_DISPLAY_MODE 74
+#define WL1273_RDS_REP_SET 77
+#define WL1273_RDS_CONFIG_DATA_SET 98
+#define WL1273_RDS_DATA_SET 99
+#define WL1273_RDS_DATA_ENB 94
+#define WL1273_TA_SET 78
+#define WL1273_TP_SET 79
+#define WL1273_DI_SET 80
+#define WL1273_MS_SET 81
+#define WL1273_PS_SCROLL_SPEED 82
+#define WL1273_TX_AUDIO_LEVEL_TEST 96
+#define WL1273_TX_AUDIO_LEVEL_TEST_THRESHOLD 73
+#define WL1273_TX_AUDIO_INPUT_LEVEL_RANGE_SET 54
+#define WL1273_RX_ANTENNA_SELECT 87
+#define WL1273_I2C_DEV_ADDR_SET 86
+#define WL1273_REF_ERR_CALIB_PARAM_SET 88
+#define WL1273_REF_ERR_CALIB_PERIODICITY_SET 89
+#define WL1273_SOC_INT_TRIGGER 52
+#define WL1273_SOC_AUDIO_PATH_SET 83
+#define WL1273_SOC_PCMI_OVERRIDE 84
+#define WL1273_SOC_I2S_OVERRIDE 85
+#define WL1273_RSSI_BLOCK_SCAN_FREQ_SET 95
+#define WL1273_RSSI_BLOCK_SCAN_START 97
+#define WL1273_RSSI_BLOCK_SCAN_DATA_GET 5
+#define WL1273_READ_FMANT_TUNE_VALUE 104
+
+#define WL1273_RDS_OFF 0
+#define WL1273_RDS_ON 1
+#define WL1273_RDS_RESET 2
+
+#define WL1273_AUDIO_DIGITAL 0
+#define WL1273_AUDIO_ANALOG 1
+
+#define WL1273_MODE_RX (1 << 0)
+#define WL1273_MODE_TX (1 << 1)
+#define WL1273_MODE_OFF (1 << 2)
+#define WL1273_MODE_SUSPENDED (1 << 3)
+
+#define WL1273_RADIO_CHILD (1 << 0)
+#define WL1273_CODEC_CHILD (1 << 1)
+
+#define WL1273_RX_MONO 1
+#define WL1273_RX_STEREO 0
+#define WL1273_TX_MONO 0
+#define WL1273_TX_STEREO 1
+
+#define WL1273_MAX_VOLUME 0xffff
+#define WL1273_DEFAULT_VOLUME 0x78b8
+
+/* I2S protocol, left channel first, data width 16 bits */
+#define WL1273_PCM_DEF_MODE 0x00
+
+/* Rx */
+#define WL1273_AUDIO_ENABLE_I2S (1 << 0)
+#define WL1273_AUDIO_ENABLE_ANALOG (1 << 1)
+
+/* Tx */
+#define WL1273_AUDIO_IO_SET_ANALOG 0
+#define WL1273_AUDIO_IO_SET_I2S 1
+
+#define WL1273_POWER_SET_OFF 0
+#define WL1273_POWER_SET_FM (1 << 0)
+#define WL1273_POWER_SET_RDS (1 << 1)
+#define WL1273_POWER_SET_RETENTION (1 << 4)
+
+#define WL1273_PUPD_SET_OFF 0x00
+#define WL1273_PUPD_SET_ON 0x01
+#define WL1273_PUPD_SET_RETENTION 0x10
+
+/* I2S mode */
+#define WL1273_IS2_WIDTH_32 0x0
+#define WL1273_IS2_WIDTH_40 0x1
+#define WL1273_IS2_WIDTH_22_23 0x2
+#define WL1273_IS2_WIDTH_23_22 0x3
+#define WL1273_IS2_WIDTH_48 0x4
+#define WL1273_IS2_WIDTH_50 0x5
+#define WL1273_IS2_WIDTH_60 0x6
+#define WL1273_IS2_WIDTH_64 0x7
+#define WL1273_IS2_WIDTH_80 0x8
+#define WL1273_IS2_WIDTH_96 0x9
+#define WL1273_IS2_WIDTH_128 0xa
+#define WL1273_IS2_WIDTH 0xf
+
+#define WL1273_IS2_FORMAT_STD (0x0 << 4)
+#define WL1273_IS2_FORMAT_LEFT (0x1 << 4)
+#define WL1273_IS2_FORMAT_RIGHT (0x2 << 4)
+#define WL1273_IS2_FORMAT_USER (0x3 << 4)
+
+#define WL1273_IS2_MASTER (0x0 << 6)
+#define WL1273_IS2_SLAVEW (0x1 << 6)
+
+#define WL1273_IS2_TRI_AFTER_SENDING (0x0 << 7)
+#define WL1273_IS2_TRI_ALWAYS_ACTIVE (0x1 << 7)
+
+#define WL1273_IS2_SDOWS_RR (0x0 << 8)
+#define WL1273_IS2_SDOWS_RF (0x1 << 8)
+#define WL1273_IS2_SDOWS_FR (0x2 << 8)
+#define WL1273_IS2_SDOWS_FF (0x3 << 8)
+
+#define WL1273_IS2_TRI_OPT (0x0 << 10)
+#define WL1273_IS2_TRI_ALWAYS (0x1 << 10)
+
+#define WL1273_IS2_RATE_48K (0x0 << 12)
+#define WL1273_IS2_RATE_44_1K (0x1 << 12)
+#define WL1273_IS2_RATE_32K (0x2 << 12)
+#define WL1273_IS2_RATE_22_05K (0x4 << 12)
+#define WL1273_IS2_RATE_16K (0x5 << 12)
+#define WL1273_IS2_RATE_12K (0x8 << 12)
+#define WL1273_IS2_RATE_11_025 (0x9 << 12)
+#define WL1273_IS2_RATE_8K (0xa << 12)
+#define WL1273_IS2_RATE (0xf << 12)
+
+#define WL1273_I2S_DEF_MODE (WL1273_IS2_WIDTH_32 | \
+ WL1273_IS2_FORMAT_STD | \
+ WL1273_IS2_MASTER | \
+ WL1273_IS2_TRI_AFTER_SENDING | \
+ WL1273_IS2_SDOWS_RR | \
+ WL1273_IS2_TRI_OPT | \
+ WL1273_IS2_RATE_48K)
+
+#define SCHAR_MIN (-128)
+#define SCHAR_MAX 127
+
+#define WL1273_FR_EVENT (1 << 0)
+#define WL1273_BL_EVENT (1 << 1)
+#define WL1273_RDS_EVENT (1 << 2)
+#define WL1273_BBLK_EVENT (1 << 3)
+#define WL1273_LSYNC_EVENT (1 << 4)
+#define WL1273_LEV_EVENT (1 << 5)
+#define WL1273_IFFR_EVENT (1 << 6)
+#define WL1273_PI_EVENT (1 << 7)
+#define WL1273_PD_EVENT (1 << 8)
+#define WL1273_STIC_EVENT (1 << 9)
+#define WL1273_MAL_EVENT (1 << 10)
+#define WL1273_POW_ENB_EVENT (1 << 11)
+#define WL1273_SCAN_OVER_EVENT (1 << 12)
+#define WL1273_ERROR_EVENT (1 << 13)
+
+#define TUNER_MODE_STOP_SEARCH 0
+#define TUNER_MODE_PRESET 1
+#define TUNER_MODE_AUTO_SEEK 2
+#define TUNER_MODE_AF 3
+#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_fw_packet{
+ int len;
+ __u8 *buf;
+};
+
+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 RADIO_WL1273_H */
--
1.6.1.3
--
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