![Mauro Carvalho Chehab](/assets/img/avatar_default.png)
By default, tda18271 tries to optimize I2C bus by updating all registers at the same time. Unfortunately, some devices doesn't support it. The current logic has a problem when small_i2c is equal to 8, since there are some transfers using 11 + 1 bytes. Fix the problem by enforcing the max size at the right place, and allows reducing it to max = 3 + 1. Acked-by: Michael Krufky <mkrufky@kernellabs.com> Acked-by: Sri Deevi <Srinivasa.Deevi@conexant.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
1206 lines
30 KiB
C
1206 lines
30 KiB
C
/*
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*
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* i2c tv tuner chip device driver
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* core core, i.e. kernel interfaces, registering and so on
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/timer.h>
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#include <linux/delay.h>
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#include <linux/errno.h>
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#include <linux/slab.h>
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#include <linux/poll.h>
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#include <linux/i2c.h>
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#include <linux/types.h>
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#include <linux/init.h>
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#include <linux/videodev2.h>
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#include <media/tuner.h>
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#include <media/tuner-types.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-ioctl.h>
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#include "mt20xx.h"
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#include "tda8290.h"
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#include "tea5761.h"
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#include "tea5767.h"
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#include "tuner-xc2028.h"
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#include "tuner-simple.h"
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#include "tda9887.h"
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#include "xc5000.h"
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#include "tda18271.h"
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#define UNSET (-1U)
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#define PREFIX t->i2c->driver->driver.name
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/** This macro allows us to probe dynamically, avoiding static links */
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#ifdef CONFIG_MEDIA_ATTACH
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#define tuner_symbol_probe(FUNCTION, ARGS...) ({ \
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int __r = -EINVAL; \
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typeof(&FUNCTION) __a = symbol_request(FUNCTION); \
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if (__a) { \
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__r = (int) __a(ARGS); \
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symbol_put(FUNCTION); \
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} else { \
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printk(KERN_ERR "TUNER: Unable to find " \
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"symbol "#FUNCTION"()\n"); \
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} \
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__r; \
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})
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static void tuner_detach(struct dvb_frontend *fe)
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{
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if (fe->ops.tuner_ops.release) {
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fe->ops.tuner_ops.release(fe);
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symbol_put_addr(fe->ops.tuner_ops.release);
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}
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if (fe->ops.analog_ops.release) {
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fe->ops.analog_ops.release(fe);
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symbol_put_addr(fe->ops.analog_ops.release);
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}
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}
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#else
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#define tuner_symbol_probe(FUNCTION, ARGS...) ({ \
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FUNCTION(ARGS); \
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})
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static void tuner_detach(struct dvb_frontend *fe)
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{
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if (fe->ops.tuner_ops.release)
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fe->ops.tuner_ops.release(fe);
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if (fe->ops.analog_ops.release)
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fe->ops.analog_ops.release(fe);
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}
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#endif
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struct tuner {
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/* device */
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struct dvb_frontend fe;
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struct i2c_client *i2c;
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struct v4l2_subdev sd;
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struct list_head list;
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unsigned int using_v4l2:1;
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/* keep track of the current settings */
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v4l2_std_id std;
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unsigned int tv_freq;
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unsigned int radio_freq;
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unsigned int audmode;
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unsigned int mode;
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unsigned int mode_mask; /* Combination of allowable modes */
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unsigned int type; /* chip type id */
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unsigned int config;
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const char *name;
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};
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static inline struct tuner *to_tuner(struct v4l2_subdev *sd)
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{
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return container_of(sd, struct tuner, sd);
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}
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/* insmod options used at init time => read/only */
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static unsigned int addr;
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static unsigned int no_autodetect;
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static unsigned int show_i2c;
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/* insmod options used at runtime => read/write */
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static int tuner_debug;
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#define tuner_warn(fmt, arg...) do { \
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printk(KERN_WARNING "%s %d-%04x: " fmt, PREFIX, \
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i2c_adapter_id(t->i2c->adapter), \
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t->i2c->addr, ##arg); \
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} while (0)
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#define tuner_info(fmt, arg...) do { \
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printk(KERN_INFO "%s %d-%04x: " fmt, PREFIX, \
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i2c_adapter_id(t->i2c->adapter), \
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t->i2c->addr, ##arg); \
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} while (0)
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#define tuner_err(fmt, arg...) do { \
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printk(KERN_ERR "%s %d-%04x: " fmt, PREFIX, \
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i2c_adapter_id(t->i2c->adapter), \
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t->i2c->addr, ##arg); \
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} while (0)
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#define tuner_dbg(fmt, arg...) do { \
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if (tuner_debug) \
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printk(KERN_DEBUG "%s %d-%04x: " fmt, PREFIX, \
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i2c_adapter_id(t->i2c->adapter), \
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t->i2c->addr, ##arg); \
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} while (0)
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/* ------------------------------------------------------------------------ */
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static unsigned int tv_range[2] = { 44, 958 };
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static unsigned int radio_range[2] = { 65, 108 };
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static char pal[] = "--";
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static char secam[] = "--";
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static char ntsc[] = "-";
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module_param(addr, int, 0444);
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module_param(no_autodetect, int, 0444);
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module_param(show_i2c, int, 0444);
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module_param_named(debug,tuner_debug, int, 0644);
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module_param_string(pal, pal, sizeof(pal), 0644);
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module_param_string(secam, secam, sizeof(secam), 0644);
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module_param_string(ntsc, ntsc, sizeof(ntsc), 0644);
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module_param_array(tv_range, int, NULL, 0644);
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module_param_array(radio_range, int, NULL, 0644);
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MODULE_DESCRIPTION("device driver for various TV and TV+FM radio tuners");
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MODULE_AUTHOR("Ralph Metzler, Gerd Knorr, Gunther Mayer");
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MODULE_LICENSE("GPL");
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/* ---------------------------------------------------------------------- */
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static void fe_set_params(struct dvb_frontend *fe,
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struct analog_parameters *params)
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{
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struct dvb_tuner_ops *fe_tuner_ops = &fe->ops.tuner_ops;
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struct tuner *t = fe->analog_demod_priv;
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if (NULL == fe_tuner_ops->set_analog_params) {
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tuner_warn("Tuner frontend module has no way to set freq\n");
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return;
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}
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fe_tuner_ops->set_analog_params(fe, params);
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}
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static void fe_standby(struct dvb_frontend *fe)
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{
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struct dvb_tuner_ops *fe_tuner_ops = &fe->ops.tuner_ops;
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if (fe_tuner_ops->sleep)
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fe_tuner_ops->sleep(fe);
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}
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static int fe_has_signal(struct dvb_frontend *fe)
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{
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u16 strength = 0;
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if (fe->ops.tuner_ops.get_rf_strength)
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fe->ops.tuner_ops.get_rf_strength(fe, &strength);
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return strength;
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}
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static int fe_set_config(struct dvb_frontend *fe, void *priv_cfg)
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{
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struct dvb_tuner_ops *fe_tuner_ops = &fe->ops.tuner_ops;
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struct tuner *t = fe->analog_demod_priv;
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if (fe_tuner_ops->set_config)
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return fe_tuner_ops->set_config(fe, priv_cfg);
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tuner_warn("Tuner frontend module has no way to set config\n");
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return 0;
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}
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static void tuner_status(struct dvb_frontend *fe);
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static struct analog_demod_ops tuner_analog_ops = {
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.set_params = fe_set_params,
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.standby = fe_standby,
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.has_signal = fe_has_signal,
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.set_config = fe_set_config,
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.tuner_status = tuner_status
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};
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/* Set tuner frequency, freq in Units of 62.5kHz = 1/16MHz */
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static void set_tv_freq(struct i2c_client *c, unsigned int freq)
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{
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struct tuner *t = to_tuner(i2c_get_clientdata(c));
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struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops;
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struct analog_parameters params = {
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.mode = t->mode,
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.audmode = t->audmode,
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.std = t->std
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};
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if (t->type == UNSET) {
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tuner_warn ("tuner type not set\n");
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return;
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}
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if (NULL == analog_ops->set_params) {
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tuner_warn ("Tuner has no way to set tv freq\n");
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return;
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}
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if (freq < tv_range[0] * 16 || freq > tv_range[1] * 16) {
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tuner_dbg ("TV freq (%d.%02d) out of range (%d-%d)\n",
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freq / 16, freq % 16 * 100 / 16, tv_range[0],
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tv_range[1]);
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/* V4L2 spec: if the freq is not possible then the closest
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possible value should be selected */
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if (freq < tv_range[0] * 16)
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freq = tv_range[0] * 16;
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else
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freq = tv_range[1] * 16;
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}
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params.frequency = freq;
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analog_ops->set_params(&t->fe, ¶ms);
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}
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static void set_radio_freq(struct i2c_client *c, unsigned int freq)
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{
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struct tuner *t = to_tuner(i2c_get_clientdata(c));
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struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops;
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struct analog_parameters params = {
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.mode = t->mode,
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.audmode = t->audmode,
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.std = t->std
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};
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if (t->type == UNSET) {
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tuner_warn ("tuner type not set\n");
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return;
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}
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if (NULL == analog_ops->set_params) {
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tuner_warn ("tuner has no way to set radio frequency\n");
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return;
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}
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if (freq < radio_range[0] * 16000 || freq > radio_range[1] * 16000) {
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tuner_dbg ("radio freq (%d.%02d) out of range (%d-%d)\n",
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freq / 16000, freq % 16000 * 100 / 16000,
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radio_range[0], radio_range[1]);
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/* V4L2 spec: if the freq is not possible then the closest
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possible value should be selected */
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if (freq < radio_range[0] * 16000)
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freq = radio_range[0] * 16000;
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else
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freq = radio_range[1] * 16000;
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}
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params.frequency = freq;
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analog_ops->set_params(&t->fe, ¶ms);
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}
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static void set_freq(struct i2c_client *c, unsigned long freq)
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{
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struct tuner *t = to_tuner(i2c_get_clientdata(c));
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switch (t->mode) {
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case V4L2_TUNER_RADIO:
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tuner_dbg("radio freq set to %lu.%02lu\n",
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freq / 16000, freq % 16000 * 100 / 16000);
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set_radio_freq(c, freq);
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t->radio_freq = freq;
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break;
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case V4L2_TUNER_ANALOG_TV:
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case V4L2_TUNER_DIGITAL_TV:
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tuner_dbg("tv freq set to %lu.%02lu\n",
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freq / 16, freq % 16 * 100 / 16);
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set_tv_freq(c, freq);
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t->tv_freq = freq;
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break;
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default:
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tuner_dbg("freq set: unknown mode: 0x%04x!\n",t->mode);
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}
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}
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static struct xc5000_config xc5000_cfg;
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static void set_type(struct i2c_client *c, unsigned int type,
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unsigned int new_mode_mask, unsigned int new_config,
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int (*tuner_callback) (void *dev, int component, int cmd, int arg))
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{
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struct tuner *t = to_tuner(i2c_get_clientdata(c));
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struct dvb_tuner_ops *fe_tuner_ops = &t->fe.ops.tuner_ops;
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struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops;
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unsigned char buffer[4];
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int tune_now = 1;
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if (type == UNSET || type == TUNER_ABSENT) {
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tuner_dbg ("tuner 0x%02x: Tuner type absent\n",c->addr);
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return;
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}
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t->type = type;
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/* prevent invalid config values */
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t->config = new_config < 256 ? new_config : 0;
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if (tuner_callback != NULL) {
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tuner_dbg("defining GPIO callback\n");
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t->fe.callback = tuner_callback;
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}
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if (t->mode == T_UNINITIALIZED) {
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tuner_dbg ("tuner 0x%02x: called during i2c_client register by adapter's attach_inform\n", c->addr);
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return;
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}
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/* discard private data, in case set_type() was previously called */
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tuner_detach(&t->fe);
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t->fe.analog_demod_priv = NULL;
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switch (t->type) {
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case TUNER_MT2032:
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if (!dvb_attach(microtune_attach,
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&t->fe, t->i2c->adapter, t->i2c->addr))
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goto attach_failed;
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break;
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case TUNER_PHILIPS_TDA8290:
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{
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struct tda829x_config cfg = {
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.lna_cfg = t->config,
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};
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if (!dvb_attach(tda829x_attach, &t->fe, t->i2c->adapter,
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t->i2c->addr, &cfg))
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goto attach_failed;
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break;
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}
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case TUNER_TEA5767:
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if (!dvb_attach(tea5767_attach, &t->fe,
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t->i2c->adapter, t->i2c->addr))
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goto attach_failed;
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t->mode_mask = T_RADIO;
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break;
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case TUNER_TEA5761:
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if (!dvb_attach(tea5761_attach, &t->fe,
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t->i2c->adapter, t->i2c->addr))
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goto attach_failed;
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t->mode_mask = T_RADIO;
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break;
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case TUNER_PHILIPS_FMD1216ME_MK3:
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buffer[0] = 0x0b;
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buffer[1] = 0xdc;
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buffer[2] = 0x9c;
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buffer[3] = 0x60;
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i2c_master_send(c, buffer, 4);
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mdelay(1);
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buffer[2] = 0x86;
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buffer[3] = 0x54;
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i2c_master_send(c, buffer, 4);
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if (!dvb_attach(simple_tuner_attach, &t->fe,
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t->i2c->adapter, t->i2c->addr, t->type))
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goto attach_failed;
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break;
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case TUNER_PHILIPS_TD1316:
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buffer[0] = 0x0b;
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buffer[1] = 0xdc;
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buffer[2] = 0x86;
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buffer[3] = 0xa4;
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i2c_master_send(c, buffer, 4);
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if (!dvb_attach(simple_tuner_attach, &t->fe,
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t->i2c->adapter, t->i2c->addr, t->type))
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goto attach_failed;
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break;
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case TUNER_XC2028:
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{
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struct xc2028_config cfg = {
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.i2c_adap = t->i2c->adapter,
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.i2c_addr = t->i2c->addr,
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};
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if (!dvb_attach(xc2028_attach, &t->fe, &cfg))
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goto attach_failed;
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tune_now = 0;
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break;
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}
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case TUNER_TDA9887:
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if (!dvb_attach(tda9887_attach,
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&t->fe, t->i2c->adapter, t->i2c->addr))
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goto attach_failed;
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break;
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case TUNER_XC5000:
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{
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xc5000_cfg.i2c_address = t->i2c->addr;
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/* if_khz will be set when the digital dvb_attach() occurs */
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xc5000_cfg.if_khz = 0;
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if (!dvb_attach(xc5000_attach,
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&t->fe, t->i2c->adapter, &xc5000_cfg))
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goto attach_failed;
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tune_now = 0;
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break;
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}
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case TUNER_NXP_TDA18271:
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{
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struct tda18271_config cfg = {
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.config = t->config,
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.small_i2c = TDA18271_03_BYTE_CHUNK_INIT,
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};
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if (!dvb_attach(tda18271_attach, &t->fe, t->i2c->addr,
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t->i2c->adapter, &cfg))
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goto attach_failed;
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tune_now = 0;
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break;
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}
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default:
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if (!dvb_attach(simple_tuner_attach, &t->fe,
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t->i2c->adapter, t->i2c->addr, t->type))
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goto attach_failed;
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break;
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}
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if ((NULL == analog_ops->set_params) &&
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(fe_tuner_ops->set_analog_params)) {
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t->name = fe_tuner_ops->info.name;
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t->fe.analog_demod_priv = t;
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memcpy(analog_ops, &tuner_analog_ops,
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sizeof(struct analog_demod_ops));
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} else {
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t->name = analog_ops->info.name;
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}
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tuner_dbg("type set to %s\n", t->name);
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if (t->mode_mask == T_UNINITIALIZED)
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t->mode_mask = new_mode_mask;
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/* Some tuners require more initialization setup before use,
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such as firmware download or device calibration.
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trying to set a frequency here will just fail
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FIXME: better to move set_freq to the tuner code. This is needed
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on analog tuners for PLL to properly work
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*/
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if (tune_now)
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|
set_freq(c, (V4L2_TUNER_RADIO == t->mode) ?
|
|
t->radio_freq : t->tv_freq);
|
|
|
|
tuner_dbg("%s %s I2C addr 0x%02x with type %d used for 0x%02x\n",
|
|
c->adapter->name, c->driver->driver.name, c->addr << 1, type,
|
|
t->mode_mask);
|
|
return;
|
|
|
|
attach_failed:
|
|
tuner_dbg("Tuner attach for type = %d failed.\n", t->type);
|
|
t->type = TUNER_ABSENT;
|
|
t->mode_mask = T_UNINITIALIZED;
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* This function apply tuner config to tuner specified
|
|
* by tun_setup structure. I addr is unset, then admin status
|
|
* and tun addr status is more precise then current status,
|
|
* it's applied. Otherwise status and type are applied only to
|
|
* tuner with exactly the same addr.
|
|
*/
|
|
|
|
static void set_addr(struct i2c_client *c, struct tuner_setup *tun_setup)
|
|
{
|
|
struct tuner *t = to_tuner(i2c_get_clientdata(c));
|
|
|
|
if ( (t->type == UNSET && ((tun_setup->addr == ADDR_UNSET) &&
|
|
(t->mode_mask & tun_setup->mode_mask))) ||
|
|
(tun_setup->addr == c->addr)) {
|
|
set_type(c, tun_setup->type, tun_setup->mode_mask,
|
|
tun_setup->config, tun_setup->tuner_callback);
|
|
} else
|
|
tuner_dbg("set addr discarded for type %i, mask %x. "
|
|
"Asked to change tuner at addr 0x%02x, with mask %x\n",
|
|
t->type, t->mode_mask,
|
|
tun_setup->addr, tun_setup->mode_mask);
|
|
}
|
|
|
|
static inline int check_mode(struct tuner *t, char *cmd)
|
|
{
|
|
if ((1 << t->mode & t->mode_mask) == 0) {
|
|
return -EINVAL;
|
|
}
|
|
|
|
switch (t->mode) {
|
|
case V4L2_TUNER_RADIO:
|
|
tuner_dbg("Cmd %s accepted for radio\n", cmd);
|
|
break;
|
|
case V4L2_TUNER_ANALOG_TV:
|
|
tuner_dbg("Cmd %s accepted for analog TV\n", cmd);
|
|
break;
|
|
case V4L2_TUNER_DIGITAL_TV:
|
|
tuner_dbg("Cmd %s accepted for digital TV\n", cmd);
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* get more precise norm info from insmod option */
|
|
static int tuner_fixup_std(struct tuner *t)
|
|
{
|
|
if ((t->std & V4L2_STD_PAL) == V4L2_STD_PAL) {
|
|
switch (pal[0]) {
|
|
case '6':
|
|
tuner_dbg ("insmod fixup: PAL => PAL-60\n");
|
|
t->std = V4L2_STD_PAL_60;
|
|
break;
|
|
case 'b':
|
|
case 'B':
|
|
case 'g':
|
|
case 'G':
|
|
tuner_dbg ("insmod fixup: PAL => PAL-BG\n");
|
|
t->std = V4L2_STD_PAL_BG;
|
|
break;
|
|
case 'i':
|
|
case 'I':
|
|
tuner_dbg ("insmod fixup: PAL => PAL-I\n");
|
|
t->std = V4L2_STD_PAL_I;
|
|
break;
|
|
case 'd':
|
|
case 'D':
|
|
case 'k':
|
|
case 'K':
|
|
tuner_dbg ("insmod fixup: PAL => PAL-DK\n");
|
|
t->std = V4L2_STD_PAL_DK;
|
|
break;
|
|
case 'M':
|
|
case 'm':
|
|
tuner_dbg ("insmod fixup: PAL => PAL-M\n");
|
|
t->std = V4L2_STD_PAL_M;
|
|
break;
|
|
case 'N':
|
|
case 'n':
|
|
if (pal[1] == 'c' || pal[1] == 'C') {
|
|
tuner_dbg("insmod fixup: PAL => PAL-Nc\n");
|
|
t->std = V4L2_STD_PAL_Nc;
|
|
} else {
|
|
tuner_dbg ("insmod fixup: PAL => PAL-N\n");
|
|
t->std = V4L2_STD_PAL_N;
|
|
}
|
|
break;
|
|
case '-':
|
|
/* default parameter, do nothing */
|
|
break;
|
|
default:
|
|
tuner_warn ("pal= argument not recognised\n");
|
|
break;
|
|
}
|
|
}
|
|
if ((t->std & V4L2_STD_SECAM) == V4L2_STD_SECAM) {
|
|
switch (secam[0]) {
|
|
case 'b':
|
|
case 'B':
|
|
case 'g':
|
|
case 'G':
|
|
case 'h':
|
|
case 'H':
|
|
tuner_dbg("insmod fixup: SECAM => SECAM-BGH\n");
|
|
t->std = V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H;
|
|
break;
|
|
case 'd':
|
|
case 'D':
|
|
case 'k':
|
|
case 'K':
|
|
tuner_dbg ("insmod fixup: SECAM => SECAM-DK\n");
|
|
t->std = V4L2_STD_SECAM_DK;
|
|
break;
|
|
case 'l':
|
|
case 'L':
|
|
if ((secam[1]=='C')||(secam[1]=='c')) {
|
|
tuner_dbg ("insmod fixup: SECAM => SECAM-L'\n");
|
|
t->std = V4L2_STD_SECAM_LC;
|
|
} else {
|
|
tuner_dbg ("insmod fixup: SECAM => SECAM-L\n");
|
|
t->std = V4L2_STD_SECAM_L;
|
|
}
|
|
break;
|
|
case '-':
|
|
/* default parameter, do nothing */
|
|
break;
|
|
default:
|
|
tuner_warn ("secam= argument not recognised\n");
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ((t->std & V4L2_STD_NTSC) == V4L2_STD_NTSC) {
|
|
switch (ntsc[0]) {
|
|
case 'm':
|
|
case 'M':
|
|
tuner_dbg("insmod fixup: NTSC => NTSC-M\n");
|
|
t->std = V4L2_STD_NTSC_M;
|
|
break;
|
|
case 'j':
|
|
case 'J':
|
|
tuner_dbg("insmod fixup: NTSC => NTSC_M_JP\n");
|
|
t->std = V4L2_STD_NTSC_M_JP;
|
|
break;
|
|
case 'k':
|
|
case 'K':
|
|
tuner_dbg("insmod fixup: NTSC => NTSC_M_KR\n");
|
|
t->std = V4L2_STD_NTSC_M_KR;
|
|
break;
|
|
case '-':
|
|
/* default parameter, do nothing */
|
|
break;
|
|
default:
|
|
tuner_info("ntsc= argument not recognised\n");
|
|
break;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void tuner_status(struct dvb_frontend *fe)
|
|
{
|
|
struct tuner *t = fe->analog_demod_priv;
|
|
unsigned long freq, freq_fraction;
|
|
struct dvb_tuner_ops *fe_tuner_ops = &fe->ops.tuner_ops;
|
|
struct analog_demod_ops *analog_ops = &fe->ops.analog_ops;
|
|
const char *p;
|
|
|
|
switch (t->mode) {
|
|
case V4L2_TUNER_RADIO: p = "radio"; break;
|
|
case V4L2_TUNER_ANALOG_TV: p = "analog TV"; break;
|
|
case V4L2_TUNER_DIGITAL_TV: p = "digital TV"; break;
|
|
default: p = "undefined"; break;
|
|
}
|
|
if (t->mode == V4L2_TUNER_RADIO) {
|
|
freq = t->radio_freq / 16000;
|
|
freq_fraction = (t->radio_freq % 16000) * 100 / 16000;
|
|
} else {
|
|
freq = t->tv_freq / 16;
|
|
freq_fraction = (t->tv_freq % 16) * 100 / 16;
|
|
}
|
|
tuner_info("Tuner mode: %s\n", p);
|
|
tuner_info("Frequency: %lu.%02lu MHz\n", freq, freq_fraction);
|
|
tuner_info("Standard: 0x%08lx\n", (unsigned long)t->std);
|
|
if (t->mode != V4L2_TUNER_RADIO)
|
|
return;
|
|
if (fe_tuner_ops->get_status) {
|
|
u32 tuner_status;
|
|
|
|
fe_tuner_ops->get_status(&t->fe, &tuner_status);
|
|
if (tuner_status & TUNER_STATUS_LOCKED)
|
|
tuner_info("Tuner is locked.\n");
|
|
if (tuner_status & TUNER_STATUS_STEREO)
|
|
tuner_info("Stereo: yes\n");
|
|
}
|
|
if (analog_ops->has_signal)
|
|
tuner_info("Signal strength: %d\n",
|
|
analog_ops->has_signal(fe));
|
|
if (analog_ops->is_stereo)
|
|
tuner_info("Stereo: %s\n",
|
|
analog_ops->is_stereo(fe) ? "yes" : "no");
|
|
}
|
|
|
|
/* ---------------------------------------------------------------------- */
|
|
|
|
/*
|
|
* Switch tuner to other mode. If tuner support both tv and radio,
|
|
* set another frequency to some value (This is needed for some pal
|
|
* tuners to avoid locking). Otherwise, just put second tuner in
|
|
* standby mode.
|
|
*/
|
|
|
|
static inline int set_mode(struct i2c_client *client, struct tuner *t, int mode, char *cmd)
|
|
{
|
|
struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops;
|
|
|
|
if (mode == t->mode)
|
|
return 0;
|
|
|
|
t->mode = mode;
|
|
|
|
if (check_mode(t, cmd) == -EINVAL) {
|
|
tuner_dbg("Tuner doesn't support this mode. "
|
|
"Putting tuner to sleep\n");
|
|
t->mode = T_STANDBY;
|
|
if (analog_ops->standby)
|
|
analog_ops->standby(&t->fe);
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#define switch_v4l2() if (!t->using_v4l2) \
|
|
tuner_dbg("switching to v4l2\n"); \
|
|
t->using_v4l2 = 1;
|
|
|
|
static inline int check_v4l2(struct tuner *t)
|
|
{
|
|
/* bttv still uses both v4l1 and v4l2 calls to the tuner (v4l2 for
|
|
TV, v4l1 for radio), until that is fixed this code is disabled.
|
|
Otherwise the radio (v4l1) wouldn't tune after using the TV (v4l2)
|
|
first. */
|
|
return 0;
|
|
}
|
|
|
|
static int tuner_s_type_addr(struct v4l2_subdev *sd, struct tuner_setup *type)
|
|
{
|
|
struct tuner *t = to_tuner(sd);
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
|
|
tuner_dbg("Calling set_type_addr for type=%d, addr=0x%02x, mode=0x%02x, config=0x%02x\n",
|
|
type->type,
|
|
type->addr,
|
|
type->mode_mask,
|
|
type->config);
|
|
|
|
set_addr(client, type);
|
|
return 0;
|
|
}
|
|
|
|
static int tuner_s_radio(struct v4l2_subdev *sd)
|
|
{
|
|
struct tuner *t = to_tuner(sd);
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
|
|
if (set_mode(client, t, V4L2_TUNER_RADIO, "s_radio") == -EINVAL)
|
|
return 0;
|
|
if (t->radio_freq)
|
|
set_freq(client, t->radio_freq);
|
|
return 0;
|
|
}
|
|
|
|
static int tuner_s_power(struct v4l2_subdev *sd, int on)
|
|
{
|
|
struct tuner *t = to_tuner(sd);
|
|
struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops;
|
|
|
|
if (on)
|
|
return 0;
|
|
|
|
tuner_dbg("Putting tuner to sleep\n");
|
|
|
|
if (check_mode(t, "s_power") == -EINVAL)
|
|
return 0;
|
|
t->mode = T_STANDBY;
|
|
if (analog_ops->standby)
|
|
analog_ops->standby(&t->fe);
|
|
return 0;
|
|
}
|
|
|
|
static int tuner_s_config(struct v4l2_subdev *sd, const struct v4l2_priv_tun_config *cfg)
|
|
{
|
|
struct tuner *t = to_tuner(sd);
|
|
struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops;
|
|
|
|
if (t->type != cfg->tuner)
|
|
return 0;
|
|
|
|
if (analog_ops->set_config) {
|
|
analog_ops->set_config(&t->fe, cfg->priv);
|
|
return 0;
|
|
}
|
|
|
|
tuner_dbg("Tuner frontend module has no way to set config\n");
|
|
return 0;
|
|
}
|
|
|
|
/* --- v4l ioctls --- */
|
|
/* take care: bttv does userspace copying, we'll get a
|
|
kernel pointer here... */
|
|
static int tuner_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
|
|
{
|
|
struct tuner *t = to_tuner(sd);
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
|
|
if (set_mode(client, t, V4L2_TUNER_ANALOG_TV, "s_std") == -EINVAL)
|
|
return 0;
|
|
|
|
switch_v4l2();
|
|
|
|
t->std = std;
|
|
tuner_fixup_std(t);
|
|
if (t->tv_freq)
|
|
set_freq(client, t->tv_freq);
|
|
return 0;
|
|
}
|
|
|
|
static int tuner_s_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f)
|
|
{
|
|
struct tuner *t = to_tuner(sd);
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
|
|
if (set_mode(client, t, f->type, "s_frequency") == -EINVAL)
|
|
return 0;
|
|
switch_v4l2();
|
|
set_freq(client, f->frequency);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tuner_g_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f)
|
|
{
|
|
struct tuner *t = to_tuner(sd);
|
|
struct dvb_tuner_ops *fe_tuner_ops = &t->fe.ops.tuner_ops;
|
|
|
|
if (check_mode(t, "g_frequency") == -EINVAL)
|
|
return 0;
|
|
switch_v4l2();
|
|
f->type = t->mode;
|
|
if (fe_tuner_ops->get_frequency) {
|
|
u32 abs_freq;
|
|
|
|
fe_tuner_ops->get_frequency(&t->fe, &abs_freq);
|
|
f->frequency = (V4L2_TUNER_RADIO == t->mode) ?
|
|
DIV_ROUND_CLOSEST(abs_freq * 2, 125) :
|
|
DIV_ROUND_CLOSEST(abs_freq, 62500);
|
|
return 0;
|
|
}
|
|
f->frequency = (V4L2_TUNER_RADIO == t->mode) ?
|
|
t->radio_freq : t->tv_freq;
|
|
return 0;
|
|
}
|
|
|
|
static int tuner_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
|
|
{
|
|
struct tuner *t = to_tuner(sd);
|
|
struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops;
|
|
struct dvb_tuner_ops *fe_tuner_ops = &t->fe.ops.tuner_ops;
|
|
|
|
if (check_mode(t, "g_tuner") == -EINVAL)
|
|
return 0;
|
|
switch_v4l2();
|
|
|
|
vt->type = t->mode;
|
|
if (analog_ops->get_afc)
|
|
vt->afc = analog_ops->get_afc(&t->fe);
|
|
if (t->mode == V4L2_TUNER_ANALOG_TV)
|
|
vt->capability |= V4L2_TUNER_CAP_NORM;
|
|
if (t->mode != V4L2_TUNER_RADIO) {
|
|
vt->rangelow = tv_range[0] * 16;
|
|
vt->rangehigh = tv_range[1] * 16;
|
|
return 0;
|
|
}
|
|
|
|
/* radio mode */
|
|
vt->rxsubchans =
|
|
V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
|
|
if (fe_tuner_ops->get_status) {
|
|
u32 tuner_status;
|
|
|
|
fe_tuner_ops->get_status(&t->fe, &tuner_status);
|
|
vt->rxsubchans =
|
|
(tuner_status & TUNER_STATUS_STEREO) ?
|
|
V4L2_TUNER_SUB_STEREO :
|
|
V4L2_TUNER_SUB_MONO;
|
|
} else {
|
|
if (analog_ops->is_stereo) {
|
|
vt->rxsubchans =
|
|
analog_ops->is_stereo(&t->fe) ?
|
|
V4L2_TUNER_SUB_STEREO :
|
|
V4L2_TUNER_SUB_MONO;
|
|
}
|
|
}
|
|
if (analog_ops->has_signal)
|
|
vt->signal = analog_ops->has_signal(&t->fe);
|
|
vt->capability |=
|
|
V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
|
|
vt->audmode = t->audmode;
|
|
vt->rangelow = radio_range[0] * 16000;
|
|
vt->rangehigh = radio_range[1] * 16000;
|
|
return 0;
|
|
}
|
|
|
|
static int tuner_s_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
|
|
{
|
|
struct tuner *t = to_tuner(sd);
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
|
|
if (check_mode(t, "s_tuner") == -EINVAL)
|
|
return 0;
|
|
|
|
switch_v4l2();
|
|
|
|
/* do nothing unless we're a radio tuner */
|
|
if (t->mode != V4L2_TUNER_RADIO)
|
|
return 0;
|
|
t->audmode = vt->audmode;
|
|
set_radio_freq(client, t->radio_freq);
|
|
return 0;
|
|
}
|
|
|
|
static int tuner_log_status(struct v4l2_subdev *sd)
|
|
{
|
|
struct tuner *t = to_tuner(sd);
|
|
struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops;
|
|
|
|
if (analog_ops->tuner_status)
|
|
analog_ops->tuner_status(&t->fe);
|
|
return 0;
|
|
}
|
|
|
|
static int tuner_suspend(struct i2c_client *c, pm_message_t state)
|
|
{
|
|
struct tuner *t = to_tuner(i2c_get_clientdata(c));
|
|
|
|
tuner_dbg("suspend\n");
|
|
/* FIXME: power down ??? */
|
|
return 0;
|
|
}
|
|
|
|
static int tuner_resume(struct i2c_client *c)
|
|
{
|
|
struct tuner *t = to_tuner(i2c_get_clientdata(c));
|
|
|
|
tuner_dbg("resume\n");
|
|
if (V4L2_TUNER_RADIO == t->mode) {
|
|
if (t->radio_freq)
|
|
set_freq(c, t->radio_freq);
|
|
} else {
|
|
if (t->tv_freq)
|
|
set_freq(c, t->tv_freq);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int tuner_command(struct i2c_client *client, unsigned cmd, void *arg)
|
|
{
|
|
struct v4l2_subdev *sd = i2c_get_clientdata(client);
|
|
|
|
/* TUNER_SET_CONFIG is still called by tuner-simple.c, so we have
|
|
to handle it here.
|
|
There must be a better way of doing this... */
|
|
switch (cmd) {
|
|
case TUNER_SET_CONFIG:
|
|
return tuner_s_config(sd, arg);
|
|
}
|
|
return -ENOIOCTLCMD;
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static const struct v4l2_subdev_core_ops tuner_core_ops = {
|
|
.log_status = tuner_log_status,
|
|
.s_std = tuner_s_std,
|
|
.s_power = tuner_s_power,
|
|
};
|
|
|
|
static const struct v4l2_subdev_tuner_ops tuner_tuner_ops = {
|
|
.s_radio = tuner_s_radio,
|
|
.g_tuner = tuner_g_tuner,
|
|
.s_tuner = tuner_s_tuner,
|
|
.s_frequency = tuner_s_frequency,
|
|
.g_frequency = tuner_g_frequency,
|
|
.s_type_addr = tuner_s_type_addr,
|
|
.s_config = tuner_s_config,
|
|
};
|
|
|
|
static const struct v4l2_subdev_ops tuner_ops = {
|
|
.core = &tuner_core_ops,
|
|
.tuner = &tuner_tuner_ops,
|
|
};
|
|
|
|
/* ---------------------------------------------------------------------- */
|
|
|
|
static LIST_HEAD(tuner_list);
|
|
|
|
/* Search for existing radio and/or TV tuners on the given I2C adapter.
|
|
Note that when this function is called from tuner_probe you can be
|
|
certain no other devices will be added/deleted at the same time, I2C
|
|
core protects against that. */
|
|
static void tuner_lookup(struct i2c_adapter *adap,
|
|
struct tuner **radio, struct tuner **tv)
|
|
{
|
|
struct tuner *pos;
|
|
|
|
*radio = NULL;
|
|
*tv = NULL;
|
|
|
|
list_for_each_entry(pos, &tuner_list, list) {
|
|
int mode_mask;
|
|
|
|
if (pos->i2c->adapter != adap ||
|
|
strcmp(pos->i2c->driver->driver.name, "tuner"))
|
|
continue;
|
|
|
|
mode_mask = pos->mode_mask & ~T_STANDBY;
|
|
if (*radio == NULL && mode_mask == T_RADIO)
|
|
*radio = pos;
|
|
/* Note: currently TDA9887 is the only demod-only
|
|
device. If other devices appear then we need to
|
|
make this test more general. */
|
|
else if (*tv == NULL && pos->type != TUNER_TDA9887 &&
|
|
(pos->mode_mask & (T_ANALOG_TV | T_DIGITAL_TV)))
|
|
*tv = pos;
|
|
}
|
|
}
|
|
|
|
/* During client attach, set_type is called by adapter's attach_inform callback.
|
|
set_type must then be completed by tuner_probe.
|
|
*/
|
|
static int tuner_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct tuner *t;
|
|
struct tuner *radio;
|
|
struct tuner *tv;
|
|
|
|
t = kzalloc(sizeof(struct tuner), GFP_KERNEL);
|
|
if (NULL == t)
|
|
return -ENOMEM;
|
|
v4l2_i2c_subdev_init(&t->sd, client, &tuner_ops);
|
|
t->i2c = client;
|
|
t->name = "(tuner unset)";
|
|
t->type = UNSET;
|
|
t->audmode = V4L2_TUNER_MODE_STEREO;
|
|
t->mode_mask = T_UNINITIALIZED;
|
|
|
|
if (show_i2c) {
|
|
unsigned char buffer[16];
|
|
int i, rc;
|
|
|
|
memset(buffer, 0, sizeof(buffer));
|
|
rc = i2c_master_recv(client, buffer, sizeof(buffer));
|
|
tuner_info("I2C RECV = ");
|
|
for (i = 0; i < rc; i++)
|
|
printk(KERN_CONT "%02x ", buffer[i]);
|
|
printk("\n");
|
|
}
|
|
|
|
/* autodetection code based on the i2c addr */
|
|
if (!no_autodetect) {
|
|
switch (client->addr) {
|
|
case 0x10:
|
|
if (tuner_symbol_probe(tea5761_autodetection,
|
|
t->i2c->adapter,
|
|
t->i2c->addr) >= 0) {
|
|
t->type = TUNER_TEA5761;
|
|
t->mode_mask = T_RADIO;
|
|
t->mode = T_STANDBY;
|
|
/* Sets freq to FM range */
|
|
t->radio_freq = 87.5 * 16000;
|
|
tuner_lookup(t->i2c->adapter, &radio, &tv);
|
|
if (tv)
|
|
tv->mode_mask &= ~T_RADIO;
|
|
|
|
goto register_client;
|
|
}
|
|
kfree(t);
|
|
return -ENODEV;
|
|
case 0x42:
|
|
case 0x43:
|
|
case 0x4a:
|
|
case 0x4b:
|
|
/* If chip is not tda8290, don't register.
|
|
since it can be tda9887*/
|
|
if (tuner_symbol_probe(tda829x_probe, t->i2c->adapter,
|
|
t->i2c->addr) >= 0) {
|
|
tuner_dbg("tda829x detected\n");
|
|
} else {
|
|
/* Default is being tda9887 */
|
|
t->type = TUNER_TDA9887;
|
|
t->mode_mask = T_RADIO | T_ANALOG_TV |
|
|
T_DIGITAL_TV;
|
|
t->mode = T_STANDBY;
|
|
goto register_client;
|
|
}
|
|
break;
|
|
case 0x60:
|
|
if (tuner_symbol_probe(tea5767_autodetection,
|
|
t->i2c->adapter, t->i2c->addr)
|
|
>= 0) {
|
|
t->type = TUNER_TEA5767;
|
|
t->mode_mask = T_RADIO;
|
|
t->mode = T_STANDBY;
|
|
/* Sets freq to FM range */
|
|
t->radio_freq = 87.5 * 16000;
|
|
tuner_lookup(t->i2c->adapter, &radio, &tv);
|
|
if (tv)
|
|
tv->mode_mask &= ~T_RADIO;
|
|
|
|
goto register_client;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Initializes only the first TV tuner on this adapter. Why only the
|
|
first? Because there are some devices (notably the ones with TI
|
|
tuners) that have more than one i2c address for the *same* device.
|
|
Experience shows that, except for just one case, the first
|
|
address is the right one. The exception is a Russian tuner
|
|
(ACORP_Y878F). So, the desired behavior is just to enable the
|
|
first found TV tuner. */
|
|
tuner_lookup(t->i2c->adapter, &radio, &tv);
|
|
if (tv == NULL) {
|
|
t->mode_mask = T_ANALOG_TV | T_DIGITAL_TV;
|
|
if (radio == NULL)
|
|
t->mode_mask |= T_RADIO;
|
|
tuner_dbg("Setting mode_mask to 0x%02x\n", t->mode_mask);
|
|
t->tv_freq = 400 * 16; /* Sets freq to VHF High */
|
|
t->radio_freq = 87.5 * 16000; /* Sets freq to FM range */
|
|
}
|
|
|
|
/* Should be just before return */
|
|
register_client:
|
|
tuner_info("chip found @ 0x%x (%s)\n", client->addr << 1,
|
|
client->adapter->name);
|
|
|
|
/* Sets a default mode */
|
|
if (t->mode_mask & T_ANALOG_TV) {
|
|
t->mode = V4L2_TUNER_ANALOG_TV;
|
|
} else if (t->mode_mask & T_RADIO) {
|
|
t->mode = V4L2_TUNER_RADIO;
|
|
} else {
|
|
t->mode = V4L2_TUNER_DIGITAL_TV;
|
|
}
|
|
set_type(client, t->type, t->mode_mask, t->config, t->fe.callback);
|
|
list_add_tail(&t->list, &tuner_list);
|
|
return 0;
|
|
}
|
|
|
|
static int tuner_remove(struct i2c_client *client)
|
|
{
|
|
struct tuner *t = to_tuner(i2c_get_clientdata(client));
|
|
|
|
v4l2_device_unregister_subdev(&t->sd);
|
|
tuner_detach(&t->fe);
|
|
t->fe.analog_demod_priv = NULL;
|
|
|
|
list_del(&t->list);
|
|
kfree(t);
|
|
return 0;
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
/* This driver supports many devices and the idea is to let the driver
|
|
detect which device is present. So rather than listing all supported
|
|
devices here, we pretend to support a single, fake device type. */
|
|
static const struct i2c_device_id tuner_id[] = {
|
|
{ "tuner", }, /* autodetect */
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, tuner_id);
|
|
|
|
static struct i2c_driver tuner_driver = {
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "tuner",
|
|
},
|
|
.probe = tuner_probe,
|
|
.remove = tuner_remove,
|
|
.command = tuner_command,
|
|
.suspend = tuner_suspend,
|
|
.resume = tuner_resume,
|
|
.id_table = tuner_id,
|
|
};
|
|
|
|
static __init int init_tuner(void)
|
|
{
|
|
return i2c_add_driver(&tuner_driver);
|
|
}
|
|
|
|
static __exit void exit_tuner(void)
|
|
{
|
|
i2c_del_driver(&tuner_driver);
|
|
}
|
|
|
|
module_init(init_tuner);
|
|
module_exit(exit_tuner);
|
|
|
|
/*
|
|
* Overrides for Emacs so that we follow Linus's tabbing style.
|
|
* ---------------------------------------------------------------------------
|
|
* Local variables:
|
|
* c-basic-offset: 8
|
|
* End:
|
|
*/
|