[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/media/radio/radio-tea5764.c b/src/kernel/linux/v4.14/drivers/media/radio/radio-tea5764.c
new file mode 100644
index 0000000..bc7e69e
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/media/radio/radio-tea5764.c
@@ -0,0 +1,541 @@
+/*
+ * driver/media/radio/radio-tea5764.c
+ *
+ * Driver for TEA5764 radio chip for linux 2.6.
+ * This driver is for TEA5764 chip from NXP, used in EZX phones from Motorola.
+ * The I2C protocol is used for communicate with chip.
+ *
+ * Based in radio-tea5761.c Copyright (C) 2005 Nokia Corporation
+ *
+ * Copyright (c) 2008 Fabio Belavenuto <belavenuto@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ *
+ * History:
+ * 2008-12-06 Fabio Belavenuto <belavenuto@gmail.com>
+ * initial code
+ *
+ * TODO:
+ * add platform_data support for IRQs platform dependencies
+ * add RDS support
+ */
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/init.h> /* Initdata */
+#include <linux/videodev2.h> /* kernel radio structs */
+#include <linux/i2c.h> /* I2C */
+#include <media/v4l2-common.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-event.h>
+
+#define DRIVER_VERSION "0.0.2"
+
+#define DRIVER_AUTHOR "Fabio Belavenuto <belavenuto@gmail.com>"
+#define DRIVER_DESC "A driver for the TEA5764 radio chip for EZX Phones."
+
+#define PINFO(format, ...)\
+ printk(KERN_INFO KBUILD_MODNAME ": "\
+ DRIVER_VERSION ": " format "\n", ## __VA_ARGS__)
+#define PWARN(format, ...)\
+ printk(KERN_WARNING KBUILD_MODNAME ": "\
+ DRIVER_VERSION ": " format "\n", ## __VA_ARGS__)
+# define PDEBUG(format, ...)\
+ printk(KERN_DEBUG KBUILD_MODNAME ": "\
+ DRIVER_VERSION ": " format "\n", ## __VA_ARGS__)
+
+/* Frequency limits in MHz -- these are European values. For Japanese
+devices, that would be 76000 and 91000. */
+#define FREQ_MIN 87500U
+#define FREQ_MAX 108000U
+#define FREQ_MUL 16
+
+/* TEA5764 registers */
+#define TEA5764_MANID 0x002b
+#define TEA5764_CHIPID 0x5764
+
+#define TEA5764_INTREG_BLMSK 0x0001
+#define TEA5764_INTREG_FRRMSK 0x0002
+#define TEA5764_INTREG_LEVMSK 0x0008
+#define TEA5764_INTREG_IFMSK 0x0010
+#define TEA5764_INTREG_BLMFLAG 0x0100
+#define TEA5764_INTREG_FRRFLAG 0x0200
+#define TEA5764_INTREG_LEVFLAG 0x0800
+#define TEA5764_INTREG_IFFLAG 0x1000
+
+#define TEA5764_FRQSET_SUD 0x8000
+#define TEA5764_FRQSET_SM 0x4000
+
+#define TEA5764_TNCTRL_PUPD1 0x8000
+#define TEA5764_TNCTRL_PUPD0 0x4000
+#define TEA5764_TNCTRL_BLIM 0x2000
+#define TEA5764_TNCTRL_SWPM 0x1000
+#define TEA5764_TNCTRL_IFCTC 0x0800
+#define TEA5764_TNCTRL_AFM 0x0400
+#define TEA5764_TNCTRL_SMUTE 0x0200
+#define TEA5764_TNCTRL_SNC 0x0100
+#define TEA5764_TNCTRL_MU 0x0080
+#define TEA5764_TNCTRL_SSL1 0x0040
+#define TEA5764_TNCTRL_SSL0 0x0020
+#define TEA5764_TNCTRL_HLSI 0x0010
+#define TEA5764_TNCTRL_MST 0x0008
+#define TEA5764_TNCTRL_SWP 0x0004
+#define TEA5764_TNCTRL_DTC 0x0002
+#define TEA5764_TNCTRL_AHLSI 0x0001
+
+#define TEA5764_TUNCHK_LEVEL(x) (((x) & 0x00F0) >> 4)
+#define TEA5764_TUNCHK_IFCNT(x) (((x) & 0xFE00) >> 9)
+#define TEA5764_TUNCHK_TUNTO 0x0100
+#define TEA5764_TUNCHK_LD 0x0008
+#define TEA5764_TUNCHK_STEREO 0x0004
+
+#define TEA5764_TESTREG_TRIGFR 0x0800
+
+struct tea5764_regs {
+ u16 intreg; /* INTFLAG & INTMSK */
+ u16 frqset; /* FRQSETMSB & FRQSETLSB */
+ u16 tnctrl; /* TNCTRL1 & TNCTRL2 */
+ u16 frqchk; /* FRQCHKMSB & FRQCHKLSB */
+ u16 tunchk; /* IFCHK & LEVCHK */
+ u16 testreg; /* TESTBITS & TESTMODE */
+ u16 rdsstat; /* RDSSTAT1 & RDSSTAT2 */
+ u16 rdslb; /* RDSLBMSB & RDSLBLSB */
+ u16 rdspb; /* RDSPBMSB & RDSPBLSB */
+ u16 rdsbc; /* RDSBBC & RDSGBC */
+ u16 rdsctrl; /* RDSCTRL1 & RDSCTRL2 */
+ u16 rdsbbl; /* PAUSEDET & RDSBBL */
+ u16 manid; /* MANID1 & MANID2 */
+ u16 chipid; /* CHIPID1 & CHIPID2 */
+} __attribute__ ((packed));
+
+struct tea5764_write_regs {
+ u8 intreg; /* INTMSK */
+ __be16 frqset; /* FRQSETMSB & FRQSETLSB */
+ __be16 tnctrl; /* TNCTRL1 & TNCTRL2 */
+ __be16 testreg; /* TESTBITS & TESTMODE */
+ __be16 rdsctrl; /* RDSCTRL1 & RDSCTRL2 */
+ __be16 rdsbbl; /* PAUSEDET & RDSBBL */
+} __attribute__ ((packed));
+
+#ifdef CONFIG_RADIO_TEA5764_XTAL
+#define RADIO_TEA5764_XTAL 1
+#else
+#define RADIO_TEA5764_XTAL 0
+#endif
+
+static int radio_nr = -1;
+static int use_xtal = RADIO_TEA5764_XTAL;
+
+struct tea5764_device {
+ struct v4l2_device v4l2_dev;
+ struct v4l2_ctrl_handler ctrl_handler;
+ struct i2c_client *i2c_client;
+ struct video_device vdev;
+ struct tea5764_regs regs;
+ struct mutex mutex;
+};
+
+/* I2C code related */
+static int tea5764_i2c_read(struct tea5764_device *radio)
+{
+ int i;
+ u16 *p = (u16 *) &radio->regs;
+
+ struct i2c_msg msgs[1] = {
+ { .addr = radio->i2c_client->addr,
+ .flags = I2C_M_RD,
+ .len = sizeof(radio->regs),
+ .buf = (void *)&radio->regs
+ },
+ };
+ if (i2c_transfer(radio->i2c_client->adapter, msgs, 1) != 1)
+ return -EIO;
+ for (i = 0; i < sizeof(struct tea5764_regs) / sizeof(u16); i++)
+ p[i] = __be16_to_cpu((__force __be16)p[i]);
+
+ return 0;
+}
+
+static int tea5764_i2c_write(struct tea5764_device *radio)
+{
+ struct tea5764_write_regs wr;
+ struct tea5764_regs *r = &radio->regs;
+ struct i2c_msg msgs[1] = {
+ {
+ .addr = radio->i2c_client->addr,
+ .len = sizeof(wr),
+ .buf = (void *)&wr
+ },
+ };
+ wr.intreg = r->intreg & 0xff;
+ wr.frqset = __cpu_to_be16(r->frqset);
+ wr.tnctrl = __cpu_to_be16(r->tnctrl);
+ wr.testreg = __cpu_to_be16(r->testreg);
+ wr.rdsctrl = __cpu_to_be16(r->rdsctrl);
+ wr.rdsbbl = __cpu_to_be16(r->rdsbbl);
+ if (i2c_transfer(radio->i2c_client->adapter, msgs, 1) != 1)
+ return -EIO;
+ return 0;
+}
+
+static void tea5764_power_up(struct tea5764_device *radio)
+{
+ struct tea5764_regs *r = &radio->regs;
+
+ if (!(r->tnctrl & TEA5764_TNCTRL_PUPD0)) {
+ r->tnctrl &= ~(TEA5764_TNCTRL_AFM | TEA5764_TNCTRL_MU |
+ TEA5764_TNCTRL_HLSI);
+ if (!use_xtal)
+ r->testreg |= TEA5764_TESTREG_TRIGFR;
+ else
+ r->testreg &= ~TEA5764_TESTREG_TRIGFR;
+
+ r->tnctrl |= TEA5764_TNCTRL_PUPD0;
+ tea5764_i2c_write(radio);
+ }
+}
+
+static void tea5764_power_down(struct tea5764_device *radio)
+{
+ struct tea5764_regs *r = &radio->regs;
+
+ if (r->tnctrl & TEA5764_TNCTRL_PUPD0) {
+ r->tnctrl &= ~TEA5764_TNCTRL_PUPD0;
+ tea5764_i2c_write(radio);
+ }
+}
+
+static void tea5764_set_freq(struct tea5764_device *radio, int freq)
+{
+ struct tea5764_regs *r = &radio->regs;
+
+ /* formula: (freq [+ or -] 225000) / 8192 */
+ if (r->tnctrl & TEA5764_TNCTRL_HLSI)
+ r->frqset = (freq + 225000) / 8192;
+ else
+ r->frqset = (freq - 225000) / 8192;
+}
+
+static int tea5764_get_freq(struct tea5764_device *radio)
+{
+ struct tea5764_regs *r = &radio->regs;
+
+ if (r->tnctrl & TEA5764_TNCTRL_HLSI)
+ return (r->frqchk * 8192) - 225000;
+ else
+ return (r->frqchk * 8192) + 225000;
+}
+
+/* tune an frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */
+static void tea5764_tune(struct tea5764_device *radio, int freq)
+{
+ tea5764_set_freq(radio, freq);
+ if (tea5764_i2c_write(radio))
+ PWARN("Could not set frequency!");
+}
+
+static void tea5764_set_audout_mode(struct tea5764_device *radio, int audmode)
+{
+ struct tea5764_regs *r = &radio->regs;
+ int tnctrl = r->tnctrl;
+
+ if (audmode == V4L2_TUNER_MODE_MONO)
+ r->tnctrl |= TEA5764_TNCTRL_MST;
+ else
+ r->tnctrl &= ~TEA5764_TNCTRL_MST;
+ if (tnctrl != r->tnctrl)
+ tea5764_i2c_write(radio);
+}
+
+static int tea5764_get_audout_mode(struct tea5764_device *radio)
+{
+ struct tea5764_regs *r = &radio->regs;
+
+ if (r->tnctrl & TEA5764_TNCTRL_MST)
+ return V4L2_TUNER_MODE_MONO;
+ else
+ return V4L2_TUNER_MODE_STEREO;
+}
+
+static void tea5764_mute(struct tea5764_device *radio, int on)
+{
+ struct tea5764_regs *r = &radio->regs;
+ int tnctrl = r->tnctrl;
+
+ if (on)
+ r->tnctrl |= TEA5764_TNCTRL_MU;
+ else
+ r->tnctrl &= ~TEA5764_TNCTRL_MU;
+ if (tnctrl != r->tnctrl)
+ tea5764_i2c_write(radio);
+}
+
+/* V4L2 vidioc */
+static int vidioc_querycap(struct file *file, void *priv,
+ struct v4l2_capability *v)
+{
+ struct tea5764_device *radio = video_drvdata(file);
+ struct video_device *dev = &radio->vdev;
+
+ strlcpy(v->driver, dev->dev.driver->name, sizeof(v->driver));
+ strlcpy(v->card, dev->name, sizeof(v->card));
+ snprintf(v->bus_info, sizeof(v->bus_info),
+ "I2C:%s", dev_name(&dev->dev));
+ v->device_caps = V4L2_CAP_TUNER | V4L2_CAP_RADIO;
+ v->capabilities = v->device_caps | V4L2_CAP_DEVICE_CAPS;
+ return 0;
+}
+
+static int vidioc_g_tuner(struct file *file, void *priv,
+ struct v4l2_tuner *v)
+{
+ struct tea5764_device *radio = video_drvdata(file);
+ struct tea5764_regs *r = &radio->regs;
+
+ if (v->index > 0)
+ return -EINVAL;
+
+ strlcpy(v->name, "FM", sizeof(v->name));
+ v->type = V4L2_TUNER_RADIO;
+ tea5764_i2c_read(radio);
+ v->rangelow = FREQ_MIN * FREQ_MUL;
+ v->rangehigh = FREQ_MAX * FREQ_MUL;
+ v->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
+ if (r->tunchk & TEA5764_TUNCHK_STEREO)
+ v->rxsubchans = V4L2_TUNER_SUB_STEREO;
+ else
+ v->rxsubchans = V4L2_TUNER_SUB_MONO;
+ v->audmode = tea5764_get_audout_mode(radio);
+ v->signal = TEA5764_TUNCHK_LEVEL(r->tunchk) * 0xffff / 0xf;
+ v->afc = TEA5764_TUNCHK_IFCNT(r->tunchk);
+
+ return 0;
+}
+
+static int vidioc_s_tuner(struct file *file, void *priv,
+ const struct v4l2_tuner *v)
+{
+ struct tea5764_device *radio = video_drvdata(file);
+
+ if (v->index > 0)
+ return -EINVAL;
+
+ tea5764_set_audout_mode(radio, v->audmode);
+ return 0;
+}
+
+static int vidioc_s_frequency(struct file *file, void *priv,
+ const struct v4l2_frequency *f)
+{
+ struct tea5764_device *radio = video_drvdata(file);
+ unsigned freq = f->frequency;
+
+ if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO)
+ return -EINVAL;
+ if (freq == 0) {
+ /* We special case this as a power down control. */
+ tea5764_power_down(radio);
+ /* Yes, that's what is returned in this case. This
+ whole special case is non-compliant and should really
+ be replaced with something better, but changing this
+ might well break code that depends on this behavior.
+ So we keep it as-is. */
+ return -EINVAL;
+ }
+ freq = clamp(freq, FREQ_MIN * FREQ_MUL, FREQ_MAX * FREQ_MUL);
+ tea5764_power_up(radio);
+ tea5764_tune(radio, (freq * 125) / 2);
+ return 0;
+}
+
+static int vidioc_g_frequency(struct file *file, void *priv,
+ struct v4l2_frequency *f)
+{
+ struct tea5764_device *radio = video_drvdata(file);
+ struct tea5764_regs *r = &radio->regs;
+
+ if (f->tuner != 0)
+ return -EINVAL;
+ tea5764_i2c_read(radio);
+ f->type = V4L2_TUNER_RADIO;
+ if (r->tnctrl & TEA5764_TNCTRL_PUPD0)
+ f->frequency = (tea5764_get_freq(radio) * 2) / 125;
+ else
+ f->frequency = 0;
+
+ return 0;
+}
+
+static int tea5764_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct tea5764_device *radio =
+ container_of(ctrl->handler, struct tea5764_device, ctrl_handler);
+
+ switch (ctrl->id) {
+ case V4L2_CID_AUDIO_MUTE:
+ tea5764_mute(radio, ctrl->val);
+ return 0;
+ }
+ return -EINVAL;
+}
+
+static const struct v4l2_ctrl_ops tea5764_ctrl_ops = {
+ .s_ctrl = tea5764_s_ctrl,
+};
+
+/* File system interface */
+static const struct v4l2_file_operations tea5764_fops = {
+ .owner = THIS_MODULE,
+ .open = v4l2_fh_open,
+ .release = v4l2_fh_release,
+ .poll = v4l2_ctrl_poll,
+ .unlocked_ioctl = video_ioctl2,
+};
+
+static const struct v4l2_ioctl_ops tea5764_ioctl_ops = {
+ .vidioc_querycap = vidioc_querycap,
+ .vidioc_g_tuner = vidioc_g_tuner,
+ .vidioc_s_tuner = vidioc_s_tuner,
+ .vidioc_g_frequency = vidioc_g_frequency,
+ .vidioc_s_frequency = vidioc_s_frequency,
+ .vidioc_log_status = v4l2_ctrl_log_status,
+ .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
+ .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
+};
+
+/* V4L2 interface */
+static const struct video_device tea5764_radio_template = {
+ .name = "TEA5764 FM-Radio",
+ .fops = &tea5764_fops,
+ .ioctl_ops = &tea5764_ioctl_ops,
+ .release = video_device_release_empty,
+};
+
+/* I2C probe: check if the device exists and register with v4l if it is */
+static int tea5764_i2c_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct tea5764_device *radio;
+ struct v4l2_device *v4l2_dev;
+ struct v4l2_ctrl_handler *hdl;
+ struct tea5764_regs *r;
+ int ret;
+
+ PDEBUG("probe");
+ radio = kzalloc(sizeof(struct tea5764_device), GFP_KERNEL);
+ if (!radio)
+ return -ENOMEM;
+
+ v4l2_dev = &radio->v4l2_dev;
+ ret = v4l2_device_register(&client->dev, v4l2_dev);
+ if (ret < 0) {
+ v4l2_err(v4l2_dev, "could not register v4l2_device\n");
+ goto errfr;
+ }
+
+ hdl = &radio->ctrl_handler;
+ v4l2_ctrl_handler_init(hdl, 1);
+ v4l2_ctrl_new_std(hdl, &tea5764_ctrl_ops,
+ V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
+ v4l2_dev->ctrl_handler = hdl;
+ if (hdl->error) {
+ ret = hdl->error;
+ v4l2_err(v4l2_dev, "Could not register controls\n");
+ goto errunreg;
+ }
+
+ mutex_init(&radio->mutex);
+ radio->i2c_client = client;
+ ret = tea5764_i2c_read(radio);
+ if (ret)
+ goto errunreg;
+ r = &radio->regs;
+ PDEBUG("chipid = %04X, manid = %04X", r->chipid, r->manid);
+ if (r->chipid != TEA5764_CHIPID ||
+ (r->manid & 0x0fff) != TEA5764_MANID) {
+ PWARN("This chip is not a TEA5764!");
+ ret = -EINVAL;
+ goto errunreg;
+ }
+
+ radio->vdev = tea5764_radio_template;
+
+ i2c_set_clientdata(client, radio);
+ video_set_drvdata(&radio->vdev, radio);
+ radio->vdev.lock = &radio->mutex;
+ radio->vdev.v4l2_dev = v4l2_dev;
+
+ /* initialize and power off the chip */
+ tea5764_i2c_read(radio);
+ tea5764_set_audout_mode(radio, V4L2_TUNER_MODE_STEREO);
+ tea5764_mute(radio, 1);
+ tea5764_power_down(radio);
+
+ ret = video_register_device(&radio->vdev, VFL_TYPE_RADIO, radio_nr);
+ if (ret < 0) {
+ PWARN("Could not register video device!");
+ goto errunreg;
+ }
+
+ PINFO("registered.");
+ return 0;
+errunreg:
+ v4l2_ctrl_handler_free(hdl);
+ v4l2_device_unregister(v4l2_dev);
+errfr:
+ kfree(radio);
+ return ret;
+}
+
+static int tea5764_i2c_remove(struct i2c_client *client)
+{
+ struct tea5764_device *radio = i2c_get_clientdata(client);
+
+ PDEBUG("remove");
+ if (radio) {
+ tea5764_power_down(radio);
+ video_unregister_device(&radio->vdev);
+ v4l2_ctrl_handler_free(&radio->ctrl_handler);
+ v4l2_device_unregister(&radio->v4l2_dev);
+ kfree(radio);
+ }
+ return 0;
+}
+
+/* I2C subsystem interface */
+static const struct i2c_device_id tea5764_id[] = {
+ { "radio-tea5764", 0 },
+ { } /* Terminating entry */
+};
+MODULE_DEVICE_TABLE(i2c, tea5764_id);
+
+static struct i2c_driver tea5764_i2c_driver = {
+ .driver = {
+ .name = "radio-tea5764",
+ },
+ .probe = tea5764_i2c_probe,
+ .remove = tea5764_i2c_remove,
+ .id_table = tea5764_id,
+};
+
+module_i2c_driver(tea5764_i2c_driver);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRIVER_VERSION);
+
+module_param(use_xtal, int, 0);
+MODULE_PARM_DESC(use_xtal, "Chip have a xtal connected in board");
+module_param(radio_nr, int, 0);
+MODULE_PARM_DESC(radio_nr, "video4linux device number to use");