/*
* This driver needs external firmware. Please use the command
* "<kerneldir>/Documentation/dvb/get_dvb_firmware alps_tdlb7" to
- * download/extract it, and then copy it to /usr/lib/hotplug/firmware.
+ * download/extract it, and then copy it to /usr/lib/hotplug/firmware
+ * or /lib/firmware (depending on configuration of firmware hotplug).
*/
#define SP8870_DEFAULT_FIRMWARE "dvb-fe-sp8870.fw"
#include <linux/device.h>
#include <linux/firmware.h>
#include <linux/delay.h>
+#include <linux/string.h>
+#include <linux/slab.h>
#include "dvb_frontend.h"
#include "sp8870.h"
struct i2c_adapter* i2c;
- struct dvb_frontend_ops ops;
-
const struct sp8870_config* config;
struct dvb_frontend frontend;
static int sp8870_writereg (struct sp8870_state* state, u16 reg, u16 data)
{
- u8 buf [] = { reg >> 8, reg & 0xff, data >> 8, data & 0xff };
+ u8 buf [] = { reg >> 8, reg & 0xff, data >> 8, data & 0xff };
struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = buf, .len = 4 };
int err;
- if ((err = i2c_transfer (state->i2c, &msg, 1)) != 1) {
+ if ((err = i2c_transfer (state->i2c, &msg, 1)) != 1) {
dprintk ("%s: writereg error (err == %i, reg == 0x%02x, data == 0x%02x)\n", __FUNCTION__, err, reg, data);
return -EREMOTEIO;
}
- return 0;
+ return 0;
}
static int sp8870_readreg (struct sp8870_state* state, u16 reg)
msg.flags = 0;
msg.buf = tx_buf;
msg.len = tx_len + 2;
- if ((err = i2c_transfer (state->i2c, &msg, 1)) != 1) {
+ if ((err = i2c_transfer (state->i2c, &msg, 1)) != 1) {
printk("%s: firmware upload failed!\n", __FUNCTION__);
printk ("%s: i2c error (err == %i)\n", __FUNCTION__, err);
return err;
static int sp8870_set_frontend_parameters (struct dvb_frontend* fe,
struct dvb_frontend_parameters *p)
{
- struct sp8870_state* state = (struct sp8870_state*) fe->demodulator_priv;
+ struct sp8870_state* state = fe->demodulator_priv;
int err;
u16 reg0xc05;
sp8870_microcontroller_stop(state);
// set tuner parameters
- sp8870_writereg(state, 0x206, 0x001);
- state->config->pll_set(fe, p);
- sp8870_writereg(state, 0x206, 0x000);
+ if (fe->ops.tuner_ops.set_params) {
+ fe->ops.tuner_ops.set_params(fe, p);
+ if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0);
+ }
// sample rate correction bit [23..17]
sp8870_writereg(state, 0x0319, 0x000A);
static int sp8870_init (struct dvb_frontend* fe)
{
- struct sp8870_state* state = (struct sp8870_state*) fe->demodulator_priv;
- const struct firmware *fw = NULL;
+ struct sp8870_state* state = fe->demodulator_priv;
+ const struct firmware *fw = NULL;
sp8870_wake_up(state);
if (state->initialised) return 0;
printk("sp8870: waiting for firmware upload (%s)...\n", SP8870_DEFAULT_FIRMWARE);
if (state->config->request_firmware(fe, &fw, SP8870_DEFAULT_FIRMWARE)) {
printk("sp8870: no firmware upload (timeout or file not found?)\n");
- release_firmware(fw);
return -EIO;
}
release_firmware(fw);
return -EIO;
}
+ release_firmware(fw);
printk("sp8870: firmware upload complete\n");
/* enable TS output and interface pins */
sp8870_writereg(state, 0x0D00, 0x010);
sp8870_writereg(state, 0x0D01, 0x000);
- /* setup PLL */
- if (state->config->pll_init) {
- sp8870_writereg(state, 0x206, 0x001);
- state->config->pll_init(fe);
- sp8870_writereg(state, 0x206, 0x000);
- }
-
return 0;
}
static int sp8870_read_status (struct dvb_frontend* fe, fe_status_t * fe_status)
{
- struct sp8870_state* state = (struct sp8870_state*) fe->demodulator_priv;
+ struct sp8870_state* state = fe->demodulator_priv;
int status;
int signal;
static int sp8870_read_ber (struct dvb_frontend* fe, u32 * ber)
{
- struct sp8870_state* state = (struct sp8870_state*) fe->demodulator_priv;
+ struct sp8870_state* state = fe->demodulator_priv;
int ret;
u32 tmp;
static int sp8870_read_signal_strength(struct dvb_frontend* fe, u16 * signal)
{
- struct sp8870_state* state = (struct sp8870_state*) fe->demodulator_priv;
+ struct sp8870_state* state = fe->demodulator_priv;
int ret;
u16 tmp;
static int sp8870_read_uncorrected_blocks (struct dvb_frontend* fe, u32* ublocks)
{
- struct sp8870_state* state = (struct sp8870_state*) fe->demodulator_priv;
+ struct sp8870_state* state = fe->demodulator_priv;
int ret;
*ublocks = 0;
static int sp8870_set_frontend (struct dvb_frontend* fe, struct dvb_frontend_parameters *p)
{
- struct sp8870_state* state = (struct sp8870_state*) fe->demodulator_priv;
+ struct sp8870_state* state = fe->demodulator_priv;
/*
The firmware of the sp8870 sometimes locks up after setting frontend parameters.
static int sp8870_sleep(struct dvb_frontend* fe)
{
- struct sp8870_state* state = (struct sp8870_state*) fe->demodulator_priv;
+ struct sp8870_state* state = fe->demodulator_priv;
// tristate TS output and disable interface pins
return sp8870_writereg(state, 0xC18, 0x000);
static int sp8870_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fesettings)
{
- fesettings->min_delay_ms = 350;
- fesettings->step_size = 0;
- fesettings->max_drift = 0;
- return 0;
+ fesettings->min_delay_ms = 350;
+ fesettings->step_size = 0;
+ fesettings->max_drift = 0;
+ return 0;
+}
+
+static int sp8870_i2c_gate_ctrl(struct dvb_frontend* fe, int enable)
+{
+ struct sp8870_state* state = fe->demodulator_priv;
+
+ if (enable) {
+ return sp8870_writereg(state, 0x206, 0x001);
+ } else {
+ return sp8870_writereg(state, 0x206, 0x000);
+ }
}
static void sp8870_release(struct dvb_frontend* fe)
{
- struct sp8870_state* state = (struct sp8870_state*) fe->demodulator_priv;
+ struct sp8870_state* state = fe->demodulator_priv;
kfree(state);
}
struct sp8870_state* state = NULL;
/* allocate memory for the internal state */
- state = (struct sp8870_state*) kmalloc(sizeof(struct sp8870_state), GFP_KERNEL);
+ state = kmalloc(sizeof(struct sp8870_state), GFP_KERNEL);
if (state == NULL) goto error;
/* setup the state */
state->config = config;
state->i2c = i2c;
- memcpy(&state->ops, &sp8870_ops, sizeof(struct dvb_frontend_ops));
state->initialised = 0;
/* check if the demod is there */
if (sp8870_readreg(state, 0x0200) < 0) goto error;
/* create dvb_frontend */
- state->frontend.ops = &state->ops;
+ memcpy(&state->frontend.ops, &sp8870_ops, sizeof(struct dvb_frontend_ops));
state->frontend.demodulator_priv = state;
return &state->frontend;
error:
- if (state) kfree(state);
+ kfree(state);
return NULL;
}
.init = sp8870_init,
.sleep = sp8870_sleep,
+ .i2c_gate_ctrl = sp8870_i2c_gate_ctrl,
.set_frontend = sp8870_set_frontend,
.get_tune_settings = sp8870_get_tune_settings,