/*
* This driver needs external firmware. Please use the command
* "<kerneldir>/Documentation/dvb/get_dvb_firmware sp887x" 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 SP887X_DEFAULT_FIRMWARE "dvb-fe-sp887x.fw"
#include <linux/moduleparam.h>
#include <linux/device.h>
#include <linux/firmware.h>
+#include <linux/string.h>
+#include <linux/slab.h>
#include "dvb_frontend.h"
#include "sp887x.h"
struct sp887x_state {
-
struct i2c_adapter* i2c;
-
- struct dvb_frontend_ops ops;
-
const struct sp887x_config* config;
-
struct dvb_frontend frontend;
/* demodulator private data */
u8 b1 [2];
int ret;
struct i2c_msg msg[] = {{ .addr = state->config->demod_address, .flags = 0, .buf = b0, .len = 2 },
- { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = b1, .len = 2 }};
+ { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = b1, .len = 2 }};
if ((ret = i2c_transfer(state->i2c, msg, 2)) != 2) {
printk("%s: readreg error (ret == %i)\n", __FUNCTION__, ret);
*/
static int sp887x_initial_setup (struct dvb_frontend* fe, const struct firmware *fw)
{
- struct sp887x_state* state = (struct sp887x_state*) fe->demodulator_priv;
+ struct sp887x_state* state = fe->demodulator_priv;
u8 buf [BLOCKSIZE+2];
int i;
int fw_size = fw->size;
/* bit 0x010: enable data valid signal */
sp887x_writereg(state, 0xd00, 0x010);
sp887x_writereg(state, 0x0d1, 0x000);
-
- /* setup the PLL */
- if (state->config->pll_init) {
- sp887x_writereg(state, 0x206, 0x001);
- state->config->pll_init(fe);
- sp887x_writereg(state, 0x206, 0x000);
- }
-
- printk ("done.\n");
return 0;
};
}
static void sp887x_correct_offsets (struct sp887x_state* state,
- struct dvb_frontend_parameters *p,
- int actual_freq)
+ struct dvb_frontend_parameters *p,
+ int actual_freq)
{
static const u32 srate_correction [] = { 1879617, 4544878, 8098561 };
int bw_index = p->u.ofdm.bandwidth - BANDWIDTH_8_MHZ;
sp887x_writereg(state, 0x30a, frequency_shift & 0xfff);
}
-
-
-
-
-
-
-
-
-
-
-
-
-
static int sp887x_setup_frontend_parameters (struct dvb_frontend* fe,
- struct dvb_frontend_parameters *p)
+ struct dvb_frontend_parameters *p)
{
- struct sp887x_state* state = (struct sp887x_state*) fe->demodulator_priv;
+ struct sp887x_state* state = fe->demodulator_priv;
int actual_freq, err;
u16 val, reg0xc05;
sp887x_microcontroller_stop(state);
/* setup the PLL */
- sp887x_writereg(state, 0x206, 0x001);
- actual_freq = state->config->pll_set(fe, p);
- sp887x_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);
+ }
+ if (fe->ops.tuner_ops.get_frequency) {
+ fe->ops.tuner_ops.get_frequency(fe, &actual_freq);
+ if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0);
+ } else {
+ actual_freq = p->frequency;
+ }
/* read status reg in order to clear <pending irqs */
sp887x_readreg(state, 0x200);
}
static int sp887x_read_status(struct dvb_frontend* fe, fe_status_t* status)
- {
- struct sp887x_state* state = (struct sp887x_state*) fe->demodulator_priv;
+{
+ struct sp887x_state* state = fe->demodulator_priv;
u16 snr12 = sp887x_readreg(state, 0xf16);
u16 sync0x200 = sp887x_readreg(state, 0x200);
u16 sync0xf17 = sp887x_readreg(state, 0xf17);
- *status = 0;
+ *status = 0;
- if (snr12 > 0x00f)
- *status |= FE_HAS_SIGNAL;
+ if (snr12 > 0x00f)
+ *status |= FE_HAS_SIGNAL;
- //if (sync0x200 & 0x004)
- // *status |= FE_HAS_SYNC | FE_HAS_CARRIER;
+ //if (sync0x200 & 0x004)
+ // *status |= FE_HAS_SYNC | FE_HAS_CARRIER;
- //if (sync0x200 & 0x008)
- // *status |= FE_HAS_VITERBI;
+ //if (sync0x200 & 0x008)
+ // *status |= FE_HAS_VITERBI;
- if ((sync0xf17 & 0x00f) == 0x002) {
- *status |= FE_HAS_LOCK;
- *status |= FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_CARRIER;
- }
+ if ((sync0xf17 & 0x00f) == 0x002) {
+ *status |= FE_HAS_LOCK;
+ *status |= FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_CARRIER;
+ }
- if (sync0x200 & 0x001) { /* tuner adjustment requested...*/
- int steps = (sync0x200 >> 4) & 0x00f;
- if (steps & 0x008)
- steps = -steps;
- dprintk("sp887x: implement tuner adjustment (%+i steps)!!\n",
- steps);
- }
+ if (sync0x200 & 0x001) { /* tuner adjustment requested...*/
+ int steps = (sync0x200 >> 4) & 0x00f;
+ if (steps & 0x008)
+ steps = -steps;
+ dprintk("sp887x: implement tuner adjustment (%+i steps)!!\n",
+ steps);
+ }
return 0;
- }
+}
static int sp887x_read_ber(struct dvb_frontend* fe, u32* ber)
- {
- struct sp887x_state* state = (struct sp887x_state*) fe->demodulator_priv;
+{
+ struct sp887x_state* state = fe->demodulator_priv;
*ber = (sp887x_readreg(state, 0xc08) & 0x3f) |
(sp887x_readreg(state, 0xc07) << 6);
sp887x_writereg(state, 0xc08, 0x000);
sp887x_writereg(state, 0xc07, 0x000);
- if (*ber >= 0x3fff0)
- *ber = ~0;
+ if (*ber >= 0x3fff0)
+ *ber = ~0;
return 0;
- }
+}
static int sp887x_read_signal_strength(struct dvb_frontend* fe, u16* strength)
- {
- struct sp887x_state* state = (struct sp887x_state*) fe->demodulator_priv;
+{
+ struct sp887x_state* state = fe->demodulator_priv;
u16 snr12 = sp887x_readreg(state, 0xf16);
- u32 signal = 3 * (snr12 << 4);
+ u32 signal = 3 * (snr12 << 4);
*strength = (signal < 0xffff) ? signal : 0xffff;
return 0;
- }
+}
static int sp887x_read_snr(struct dvb_frontend* fe, u16* snr)
- {
- struct sp887x_state* state = (struct sp887x_state*) fe->demodulator_priv;
+{
+ struct sp887x_state* state = fe->demodulator_priv;
u16 snr12 = sp887x_readreg(state, 0xf16);
*snr = (snr12 << 4) | (snr12 >> 8);
- return 0;
- }
+ return 0;
+}
static int sp887x_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
{
- struct sp887x_state* state = (struct sp887x_state*) fe->demodulator_priv;
+ struct sp887x_state* state = fe->demodulator_priv;
*ucblocks = sp887x_readreg(state, 0xc0c);
if (*ucblocks == 0xfff)
*ucblocks = ~0;
- return 0;
+ return 0;
+}
+
+static int sp887x_i2c_gate_ctrl(struct dvb_frontend* fe, int enable)
+{
+ struct sp887x_state* state = fe->demodulator_priv;
+
+ if (enable) {
+ return sp887x_writereg(state, 0x206, 0x001);
+ } else {
+ return sp887x_writereg(state, 0x206, 0x000);
+ }
}
static int sp887x_sleep(struct dvb_frontend* fe)
{
- struct sp887x_state* state = (struct sp887x_state*) fe->demodulator_priv;
+ struct sp887x_state* state = fe->demodulator_priv;
/* tristate TS output and disable interface pins */
sp887x_writereg(state, 0xc18, 0x000);
return 0;
- }
+}
static int sp887x_init(struct dvb_frontend* fe)
{
- struct sp887x_state* state = (struct sp887x_state*) fe->demodulator_priv;
- const struct firmware *fw = NULL;
+ struct sp887x_state* state = fe->demodulator_priv;
+ const struct firmware *fw = NULL;
int ret;
if (!state->initialised) {
- /* request the firmware, this will block until someone uploads it */
+ /* request the firmware, this will block until someone uploads it */
printk("sp887x: waiting for firmware upload (%s)...\n", SP887X_DEFAULT_FIRMWARE);
ret = state->config->request_firmware(fe, &fw, SP887X_DEFAULT_FIRMWARE);
- if (ret) {
- printk("sp887x: no firmware upload (timeout or file not found?)\n");
+ if (ret) {
+ printk("sp887x: no firmware upload (timeout or file not found?)\n");
return ret;
- }
+ }
ret = sp887x_initial_setup(fe, fw);
- if (ret) {
- printk("sp887x: writing firmware to device failed\n");
- release_firmware(fw);
+ release_firmware(fw);
+ if (ret) {
+ printk("sp887x: writing firmware to device failed\n");
return ret;
- }
+ }
printk("sp887x: firmware upload complete\n");
state->initialised = 1;
}
static int sp887x_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fesettings)
{
- fesettings->min_delay_ms = 350;
- fesettings->step_size = 166666*2;
- fesettings->max_drift = (166666*2)+1;
- return 0;
+ fesettings->min_delay_ms = 350;
+ fesettings->step_size = 166666*2;
+ fesettings->max_drift = (166666*2)+1;
+ return 0;
}
static void sp887x_release(struct dvb_frontend* fe)
{
- struct sp887x_state* state = (struct sp887x_state*) fe->demodulator_priv;
+ struct sp887x_state* state = fe->demodulator_priv;
kfree(state);
}
struct sp887x_state* state = NULL;
/* allocate memory for the internal state */
- state = (struct sp887x_state*) kmalloc(sizeof(struct sp887x_state), GFP_KERNEL);
+ state = kmalloc(sizeof(struct sp887x_state), GFP_KERNEL);
if (state == NULL) goto error;
/* setup the state */
state->config = config;
state->i2c = i2c;
- memcpy(&state->ops, &sp887x_ops, sizeof(struct dvb_frontend_ops));
state->initialised = 0;
/* check if the demod is there */
if (sp887x_readreg(state, 0x0200) < 0) goto error;
/* create dvb_frontend */
- state->frontend.ops = &state->ops;
+ memcpy(&state->frontend.ops, &sp887x_ops, sizeof(struct dvb_frontend_ops));
state->frontend.demodulator_priv = state;
return &state->frontend;
error:
- if (state) kfree(state);
+ kfree(state);
return NULL;
}
.caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 |
- FE_CAN_RECOVER
+ FE_CAN_RECOVER
},
.release = sp887x_release,
.init = sp887x_init,
.sleep = sp887x_sleep,
+ .i2c_gate_ctrl = sp887x_i2c_gate_ctrl,
.set_frontend = sp887x_setup_frontend_parameters,
.get_tune_settings = sp887x_get_tune_settings,
git://git.onelab.eu / linux-2.6.git / blobdiff