/*
- Driver for the Microtune 7202D Frontend
+ Driver for the Spase sp887x demodulator
*/
/*
- This driver needs a copy of the Avermedia firmware. The version tested
- is part of the Avermedia DVB-T 1.3.26.3 Application. If the software is
- installed in Windows the file will be in the /Program Files/AVerTV DVB-T/
- directory and is called sc_main.mc. Alternatively it can "extracted" from
- the install cab files. Copy this file to '/usr/lib/hotplug/firmware/sc_main.mc'.
- With this version of the file the first 10 bytes are discarded and the
- next 0x4000 loaded. This may change in future versions.
+ * 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.
*/
+#define SP887X_DEFAULT_FIRMWARE "dvb-fe-sp887x.fw"
-#include <linux/kernel.h>
-#include <linux/vmalloc.h>
-#include <linux/module.h>
#include <linux/init.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/fs.h>
-#include <linux/unistd.h>
-#include <linux/fcntl.h>
-#include <linux/errno.h>
-#include <linux/i2c.h>
-#include <linux/syscalls.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/device.h>
+#include <linux/firmware.h>
#include "dvb_frontend.h"
-#include "dvb_functions.h"
-
-#ifndef DVB_SP887X_FIRMWARE_FILE
-#define DVB_SP887X_FIRMWARE_FILE "/usr/lib/hotplug/firmware/sc_main.mc"
-#endif
-
-static char *sp887x_firmware = DVB_SP887X_FIRMWARE_FILE;
-
-#if 0
-#define dprintk(x...) printk(x)
-#else
-#define dprintk(x...)
-#endif
-
-#if 0
-#define LOG(dir,addr,buf,len) \
- do { \
- int i; \
- printk("%s (%02x):", dir, addr & 0xff); \
- for (i=0; i<len; i++) \
- printk(" 0x%02x,", buf[i] & 0xff); \
- printk("\n"); \
- } while (0)
-#else
-#define LOG(dir,addr,buf,len)
-#endif
-
-
-static
-struct dvb_frontend_info sp887x_info = {
- .name = "Microtune MT7202DTF",
- .type = FE_OFDM,
- .frequency_min = 50500000,
- .frequency_max = 858000000,
- .frequency_stepsize = 166666,
- .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
+#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 initialised:1;
};
-static
-int i2c_writebytes (struct dvb_frontend *fe, u8 addr, u8 *buf, u8 len)
+static int debug;
+#define dprintk(args...) \
+ do { \
+ if (debug) printk(KERN_DEBUG "sp887x: " args); \
+ } while (0)
+
+static int i2c_writebytes (struct sp887x_state* state, u8 *buf, u8 len)
{
- struct dvb_i2c_bus *i2c = fe->i2c;
- struct i2c_msg msg = { .addr = addr, .flags = 0, .buf = buf, .len = len };
+ struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = buf, .len = len };
int err;
- LOG("i2c_writebytes", msg.addr, msg.buf, msg.len);
-
- if ((err = i2c->xfer (i2c, &msg, 1)) != 1) {
+ if ((err = i2c_transfer (state->i2c, &msg, 1)) != 1) {
printk ("%s: i2c write error (addr %02x, err == %i)\n",
- __FUNCTION__, addr, err);
+ __FUNCTION__, state->config->demod_address, err);
return -EREMOTEIO;
}
return 0;
}
-
-
-static
-int sp887x_writereg (struct dvb_frontend *fe, u16 reg, u16 data)
+static int sp887x_writereg (struct sp887x_state* state, u16 reg, u16 data)
{
- struct dvb_i2c_bus *i2c = fe->i2c;
u8 b0 [] = { reg >> 8 , reg & 0xff, data >> 8, data & 0xff };
- struct i2c_msg msg = { .addr = 0x70, .flags = 0, .buf = b0, .len = 4 };
+ struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = b0, .len = 4 };
int ret;
- LOG("sp887x_writereg", msg.addr, msg.buf, msg.len);
-
- if ((ret = i2c->xfer(i2c, &msg, 1)) != 1) {
+ if ((ret = i2c_transfer(state->i2c, &msg, 1)) != 1) {
/**
* in case of soft reset we ignore ACK errors...
*/
- if (!(reg == 0xf1a && data == 0x000 &&
+ if (!(reg == 0xf1a && data == 0x000 &&
(ret == -EREMOTEIO || ret == -EFAULT)))
{
printk("%s: writereg error "
return 0;
}
-
-static
-u16 sp887x_readreg (struct dvb_frontend *fe, u16 reg)
+static int sp887x_readreg (struct sp887x_state* state, u16 reg)
{
- struct dvb_i2c_bus *i2c = fe->i2c;
u8 b0 [] = { reg >> 8 , reg & 0xff };
u8 b1 [2];
int ret;
- struct i2c_msg msg[] = {{ .addr = 0x70, .flags = 0, .buf = b0, .len = 2 },
- { .addr = 0x70, .flags = I2C_M_RD, .buf = b1, .len = 2 }};
+ 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 }};
- LOG("sp887x_readreg (w)", msg[0].addr, msg[0].buf, msg[0].len);
- LOG("sp887x_readreg (r)", msg[1].addr, msg[1].buf, msg[1].len);
-
- if ((ret = i2c->xfer(i2c, msg, 2)) != 2)
+ if ((ret = i2c_transfer(state->i2c, msg, 2)) != 2) {
printk("%s: readreg error (ret == %i)\n", __FUNCTION__, ret);
+ return -1;
+ }
return (((b1[0] << 8) | b1[1]) & 0xfff);
}
-
-static
-void sp887x_microcontroller_stop (struct dvb_frontend *fe)
+static void sp887x_microcontroller_stop (struct sp887x_state* state)
{
dprintk("%s\n", __FUNCTION__);
- sp887x_writereg(fe, 0xf08, 0x000);
- sp887x_writereg(fe, 0xf09, 0x000);
+ sp887x_writereg(state, 0xf08, 0x000);
+ sp887x_writereg(state, 0xf09, 0x000);
/* microcontroller STOP */
- sp887x_writereg(fe, 0xf00, 0x000);
+ sp887x_writereg(state, 0xf00, 0x000);
}
-
-static
-void sp887x_microcontroller_start (struct dvb_frontend *fe)
+static void sp887x_microcontroller_start (struct sp887x_state* state)
{
dprintk("%s\n", __FUNCTION__);
- sp887x_writereg(fe, 0xf08, 0x000);
- sp887x_writereg(fe, 0xf09, 0x000);
+ sp887x_writereg(state, 0xf08, 0x000);
+ sp887x_writereg(state, 0xf09, 0x000);
/* microcontroller START */
- sp887x_writereg(fe, 0xf00, 0x001);
+ sp887x_writereg(state, 0xf00, 0x001);
}
-
-static
-void sp887x_setup_agc (struct dvb_frontend *fe)
+static void sp887x_setup_agc (struct sp887x_state* state)
{
/* setup AGC parameters */
dprintk("%s\n", __FUNCTION__);
- sp887x_writereg(fe, 0x33c, 0x054);
- sp887x_writereg(fe, 0x33b, 0x04c);
- sp887x_writereg(fe, 0x328, 0x000);
- sp887x_writereg(fe, 0x327, 0x005);
- sp887x_writereg(fe, 0x326, 0x001);
- sp887x_writereg(fe, 0x325, 0x001);
- sp887x_writereg(fe, 0x324, 0x001);
- sp887x_writereg(fe, 0x318, 0x050);
- sp887x_writereg(fe, 0x317, 0x3fe);
- sp887x_writereg(fe, 0x316, 0x001);
- sp887x_writereg(fe, 0x313, 0x005);
- sp887x_writereg(fe, 0x312, 0x002);
- sp887x_writereg(fe, 0x306, 0x000);
- sp887x_writereg(fe, 0x303, 0x000);
+ sp887x_writereg(state, 0x33c, 0x054);
+ sp887x_writereg(state, 0x33b, 0x04c);
+ sp887x_writereg(state, 0x328, 0x000);
+ sp887x_writereg(state, 0x327, 0x005);
+ sp887x_writereg(state, 0x326, 0x001);
+ sp887x_writereg(state, 0x325, 0x001);
+ sp887x_writereg(state, 0x324, 0x001);
+ sp887x_writereg(state, 0x318, 0x050);
+ sp887x_writereg(state, 0x317, 0x3fe);
+ sp887x_writereg(state, 0x316, 0x001);
+ sp887x_writereg(state, 0x313, 0x005);
+ sp887x_writereg(state, 0x312, 0x002);
+ sp887x_writereg(state, 0x306, 0x000);
+ sp887x_writereg(state, 0x303, 0x000);
}
-
#define BLOCKSIZE 30
-
+#define FW_SIZE 0x4000
/**
* load firmware and setup MPEG interface...
*/
-static
-int sp887x_initial_setup (struct dvb_frontend *fe)
+static int sp887x_initial_setup (struct dvb_frontend* fe, const struct firmware *fw)
{
+ struct sp887x_state* state = (struct sp887x_state*) fe->demodulator_priv;
u8 buf [BLOCKSIZE+2];
- unsigned char *firmware = NULL;
int i;
- int fd;
- int filesize;
- int fw_size;
- mm_segment_t fs;
+ int fw_size = fw->size;
+ unsigned char *mem = fw->data;
dprintk("%s\n", __FUNCTION__);
- /* soft reset */
- sp887x_writereg(fe, 0xf1a, 0x000);
-
- sp887x_microcontroller_stop (fe);
-
- fs = get_fs();
-
- // Load the firmware
- set_fs(get_ds());
- fd = sys_open(sp887x_firmware, 0, 0);
- if (fd < 0) {
- printk(KERN_WARNING "%s: Unable to open firmware %s\n", __FUNCTION__,
- sp887x_firmware);
- return -EIO;
- }
- filesize = sys_lseek(fd, 0L, 2);
- if (filesize <= 0) {
- printk(KERN_WARNING "%s: Firmware %s is empty\n", __FUNCTION__,
- sp887x_firmware);
- sys_close(fd);
- return -EIO;
- }
+ /* ignore the first 10 bytes, then we expect 0x4000 bytes of firmware */
+ if (fw_size < FW_SIZE+10)
+ return -ENODEV;
- fw_size = 0x4000;
+ mem = fw->data + 10;
- // allocate buffer for it
- firmware = vmalloc(fw_size);
- if (firmware == NULL) {
- printk(KERN_WARNING "%s: Out of memory loading firmware\n",
- __FUNCTION__);
- sys_close(fd);
- return -EIO;
- }
+ /* soft reset */
+ sp887x_writereg(state, 0xf1a, 0x000);
- // read it!
- // read the first 16384 bytes from the file
- // ignore the first 10 bytes
- sys_lseek(fd, 10, 0);
- if (sys_read(fd, firmware, fw_size) != fw_size) {
- printk(KERN_WARNING "%s: Failed to read firmware\n", __FUNCTION__);
- vfree(firmware);
- sys_close(fd);
- return -EIO;
- }
- sys_close(fd);
- set_fs(fs);
+ sp887x_microcontroller_stop (state);
printk ("%s: firmware upload... ", __FUNCTION__);
/* setup write pointer to -1 (end of memory) */
/* bit 0x8000 in address is set to enable 13bit mode */
- sp887x_writereg(fe, 0x8f08, 0x1fff);
+ sp887x_writereg(state, 0x8f08, 0x1fff);
/* dummy write (wrap around to start of memory) */
- sp887x_writereg(fe, 0x8f0a, 0x0000);
+ sp887x_writereg(state, 0x8f0a, 0x0000);
- for (i=0; i<fw_size; i+=BLOCKSIZE) {
+ for (i = 0; i < FW_SIZE; i += BLOCKSIZE) {
int c = BLOCKSIZE;
int err;
- if (i+c > fw_size)
- c = fw_size - i;
+ if (i+c > FW_SIZE)
+ c = FW_SIZE - i;
/* bit 0x8000 in address is set to enable 13bit mode */
/* bit 0x4000 enables multibyte read/write transfers */
buf[0] = 0xcf;
buf[1] = 0x0a;
- memcpy(&buf[2], firmware + i, c);
+ memcpy(&buf[2], mem + i, c);
- if ((err = i2c_writebytes (fe, 0x70, buf, c+2)) < 0) {
+ if ((err = i2c_writebytes (state, buf, c+2)) < 0) {
printk ("failed.\n");
printk ("%s: i2c error (err == %i)\n", __FUNCTION__, err);
- vfree(firmware);
return err;
}
}
- vfree(firmware);
-
/* don't write RS bytes between packets */
- sp887x_writereg(fe, 0xc13, 0x001);
+ sp887x_writereg(state, 0xc13, 0x001);
/* suppress clock if (!data_valid) */
- sp887x_writereg(fe, 0xc14, 0x000);
+ sp887x_writereg(state, 0xc14, 0x000);
/* setup MPEG interface... */
- sp887x_writereg(fe, 0xc1a, 0x872);
- sp887x_writereg(fe, 0xc1b, 0x001);
- sp887x_writereg(fe, 0xc1c, 0x000); /* parallel mode (serial mode == 1) */
- sp887x_writereg(fe, 0xc1a, 0x871);
+ sp887x_writereg(state, 0xc1a, 0x872);
+ sp887x_writereg(state, 0xc1b, 0x001);
+ sp887x_writereg(state, 0xc1c, 0x000); /* parallel mode (serial mode == 1) */
+ sp887x_writereg(state, 0xc1a, 0x871);
/* ADC mode, 2 for MT8872, 3 for SP8870/SP8871 */
- sp887x_writereg(fe, 0x301, 0x002);
+ sp887x_writereg(state, 0x301, 0x002);
- sp887x_setup_agc(fe);
+ sp887x_setup_agc(state);
/* bit 0x010: enable data valid signal */
- sp887x_writereg(fe, 0xd00, 0x010);
- sp887x_writereg(fe, 0x0d1, 0x000);
+ 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;
};
-
-/**
- * returns the actual tuned center frequency which can be used
- * to initialise the AFC registers
- */
-static
-int tsa5060_setup_pll (struct dvb_frontend *fe, int freq)
-{
- u8 cfg, cpump, band_select;
- u8 buf [4];
- u32 div;
-
- div = (36000000 + freq + 83333) / 166666;
- cfg = 0x88;
-
- cpump = freq < 175000000 ? 2 : freq < 390000000 ? 1 :
- freq < 470000000 ? 2 : freq < 750000000 ? 2 : 3;
-
- band_select = freq < 175000000 ? 0x0e : freq < 470000000 ? 0x05 : 0x03;
-
- buf [0] = (div >> 8) & 0x7f;
- buf [1] = div & 0xff;
- buf [2] = ((div >> 10) & 0x60) | cfg;
- buf [3] = cpump | band_select;
-
- /* open i2c gate for PLL message transmission... */
- sp887x_writereg(fe, 0x206, 0x001);
- i2c_writebytes(fe, 0x60, buf, 4);
- sp887x_writereg(fe, 0x206, 0x000);
-
- return (div * 166666 - 36000000);
-}
-
-
-
-static
-int configure_reg0xc05 (struct dvb_frontend_parameters *p, u16 *reg0xc05)
+static int configure_reg0xc05 (struct dvb_frontend_parameters *p, u16 *reg0xc05)
{
int known_parameters = 1;
-
+
*reg0xc05 = 0x000;
switch (p->u.ofdm.constellation) {
return 0;
}
-
/**
* estimates division of two 24bit numbers,
* derived from the ves1820/stv0299 driver code
*/
-static
-void divide (int n, int d, int *quotient_i, int *quotient_f)
+static void divide (int n, int d, int *quotient_i, int *quotient_f)
{
unsigned int q, r;
}
}
-
-static
-void sp887x_correct_offsets (struct dvb_frontend *fe,
+static void sp887x_correct_offsets (struct sp887x_state* state,
struct dvb_frontend_parameters *p,
int actual_freq)
{
frequency_shift = -frequency_shift;
/* sample rate correction */
- sp887x_writereg(fe, 0x319, srate_correction[bw_index] >> 12);
- sp887x_writereg(fe, 0x31a, srate_correction[bw_index] & 0xfff);
+ sp887x_writereg(state, 0x319, srate_correction[bw_index] >> 12);
+ sp887x_writereg(state, 0x31a, srate_correction[bw_index] & 0xfff);
/* carrier offset correction */
- sp887x_writereg(fe, 0x309, frequency_shift >> 12);
- sp887x_writereg(fe, 0x30a, frequency_shift & 0xfff);
+ sp887x_writereg(state, 0x309, frequency_shift >> 12);
+ sp887x_writereg(state, 0x30a, frequency_shift & 0xfff);
}
-static
-int sp887x_setup_frontend_parameters (struct dvb_frontend *fe,
+
+
+
+
+
+
+
+
+
+
+
+
+static int sp887x_setup_frontend_parameters (struct dvb_frontend* fe,
struct dvb_frontend_parameters *p)
{
+ struct sp887x_state* state = (struct sp887x_state*) fe->demodulator_priv;
int actual_freq, err;
u16 val, reg0xc05;
p->u.ofdm.bandwidth != BANDWIDTH_7_MHZ &&
p->u.ofdm.bandwidth != BANDWIDTH_6_MHZ)
return -EINVAL;
-
+
if ((err = configure_reg0xc05(p, ®0xc05)))
return err;
- sp887x_microcontroller_stop(fe);
+ sp887x_microcontroller_stop(state);
- actual_freq = tsa5060_setup_pll(fe, p->frequency);
+ /* setup the PLL */
+ sp887x_writereg(state, 0x206, 0x001);
+ actual_freq = state->config->pll_set(fe, p);
+ sp887x_writereg(state, 0x206, 0x000);
- /* read status reg in order to clear pending irqs */
- sp887x_readreg(fe, 0x200);
+ /* read status reg in order to clear <pending irqs */
+ sp887x_readreg(state, 0x200);
- sp887x_correct_offsets(fe, p, actual_freq);
+ sp887x_correct_offsets(state, p, actual_freq);
/* filter for 6/7/8 Mhz channel */
if (p->u.ofdm.bandwidth == BANDWIDTH_6_MHZ)
else
val = 0;
- sp887x_writereg(fe, 0x311, val);
+ sp887x_writereg(state, 0x311, val);
/* scan order: 2k first = 0, 8k first = 1 */
if (p->u.ofdm.transmission_mode == TRANSMISSION_MODE_2K)
- sp887x_writereg(fe, 0x338, 0x000);
+ sp887x_writereg(state, 0x338, 0x000);
else
- sp887x_writereg(fe, 0x338, 0x001);
+ sp887x_writereg(state, 0x338, 0x001);
- sp887x_writereg(fe, 0xc05, reg0xc05);
+ sp887x_writereg(state, 0xc05, reg0xc05);
if (p->u.ofdm.bandwidth == BANDWIDTH_6_MHZ)
val = 2 << 3;
/* enable OFDM and SAW bits as lock indicators in sync register 0xf17,
* optimize algorithm for given bandwidth...
*/
- sp887x_writereg(fe, 0xf14, 0x160 | val);
- sp887x_writereg(fe, 0xf15, 0x000);
+ sp887x_writereg(state, 0xf14, 0x160 | val);
+ sp887x_writereg(state, 0xf15, 0x000);
- sp887x_microcontroller_start(fe);
+ sp887x_microcontroller_start(state);
return 0;
}
-
-static
-int sp887x_ioctl (struct dvb_frontend *fe, unsigned int cmd, void *arg)
-{
- switch (cmd) {
- case FE_GET_INFO:
- memcpy (arg, &sp887x_info, sizeof(struct dvb_frontend_info));
- break;
-
- case FE_READ_STATUS:
+static int sp887x_read_status(struct dvb_frontend* fe, fe_status_t* status)
{
- u16 snr12 = sp887x_readreg(fe, 0xf16);
- u16 sync0x200 = sp887x_readreg(fe, 0x200);
- u16 sync0xf17 = sp887x_readreg(fe, 0xf17);
- fe_status_t *status = arg;
+ struct sp887x_state* state = (struct sp887x_state*) fe->demodulator_priv;
+ u16 snr12 = sp887x_readreg(state, 0xf16);
+ u16 sync0x200 = sp887x_readreg(state, 0x200);
+ u16 sync0xf17 = sp887x_readreg(state, 0xf17);
*status = 0;
steps);
}
- break;
-
+ return 0;
}
- case FE_READ_BER:
+static int sp887x_read_ber(struct dvb_frontend* fe, u32* ber)
{
- u32* ber = arg;
- *ber = (sp887x_readreg(fe, 0xc08) & 0x3f) |
- (sp887x_readreg(fe, 0xc07) << 6);
- sp887x_writereg(fe, 0xc08, 0x000);
- sp887x_writereg(fe, 0xc07, 0x000);
+ struct sp887x_state* state = (struct sp887x_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;
- break;
+ return 0;
}
- case FE_READ_SIGNAL_STRENGTH: // FIXME: correct registers ?
+static int sp887x_read_signal_strength(struct dvb_frontend* fe, u16* strength)
{
- u16 snr12 = sp887x_readreg(fe, 0xf16);
+ struct sp887x_state* state = (struct sp887x_state*) fe->demodulator_priv;
+
+ u16 snr12 = sp887x_readreg(state, 0xf16);
u32 signal = 3 * (snr12 << 4);
- *((u16*) arg) = (signal < 0xffff) ? signal : 0xffff;
- break;
- }
+ *strength = (signal < 0xffff) ? signal : 0xffff;
- case FE_READ_SNR:
- {
- u16 snr12 = sp887x_readreg(fe, 0xf16);
- *(u16*) arg = (snr12 << 4) | (snr12 >> 8);
- break;
+ return 0;
}
- case FE_READ_UNCORRECTED_BLOCKS:
+static int sp887x_read_snr(struct dvb_frontend* fe, u16* snr)
{
- u32 *ublocks = (u32 *) arg;
- *ublocks = sp887x_readreg(fe, 0xc0c);
- if (*ublocks == 0xfff)
- *ublocks = ~0;
- break;
- }
-
- case FE_SET_FRONTEND:
- return sp887x_setup_frontend_parameters(fe, arg);
+ struct sp887x_state* state = (struct sp887x_state*) fe->demodulator_priv;
- case FE_GET_FRONTEND: // FIXME: read known values back from Hardware...
- break;
+ u16 snr12 = sp887x_readreg(state, 0xf16);
+ *snr = (snr12 << 4) | (snr12 >> 8);
- case FE_SLEEP:
- /* tristate TS output and disable interface pins */
- sp887x_writereg(fe, 0xc18, 0x000);
- break;
-
- case FE_INIT:
- if (fe->data == NULL) { /* first time initialisation... */
- fe->data = (void*) ~0;
- sp887x_initial_setup (fe);
- }
- /* enable TS output and interface pins */
- sp887x_writereg(fe, 0xc18, 0x00d);
- break;
-
- case FE_GET_TUNE_SETTINGS:
- {
- struct dvb_frontend_tune_settings* fesettings = (struct dvb_frontend_tune_settings*) arg;
- fesettings->min_delay_ms = 50;
- fesettings->step_size = 0;
- fesettings->max_drift = 0;
return 0;
- }
+ }
- default:
- return -EOPNOTSUPP;
- };
+static int sp887x_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
+{
+ struct sp887x_state* state = (struct sp887x_state*) fe->demodulator_priv;
+
+ *ucblocks = sp887x_readreg(state, 0xc0c);
+ if (*ucblocks == 0xfff)
+ *ucblocks = ~0;
return 0;
}
+static int sp887x_sleep(struct dvb_frontend* fe)
+{
+ struct sp887x_state* state = (struct sp887x_state*) fe->demodulator_priv;
+ /* tristate TS output and disable interface pins */
+ sp887x_writereg(state, 0xc18, 0x000);
-static
-int sp887x_attach (struct dvb_i2c_bus *i2c, void **data)
+ return 0;
+ }
+
+static int sp887x_init(struct dvb_frontend* fe)
{
- struct i2c_msg msg = {.addr = 0x70, .flags = 0, .buf = NULL, .len = 0 };
+ struct sp887x_state* state = (struct sp887x_state*) fe->demodulator_priv;
+ const struct firmware *fw = NULL;
+ int ret;
- dprintk ("%s\n", __FUNCTION__);
+ if (!state->initialised) {
+ /* 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");
+ return ret;
+ }
- if (i2c->xfer (i2c, &msg, 1) != 1)
- return -ENODEV;
+ ret = sp887x_initial_setup(fe, fw);
+ if (ret) {
+ printk("sp887x: writing firmware to device failed\n");
+ release_firmware(fw);
+ return ret;
+ }
+ printk("sp887x: firmware upload complete\n");
+ state->initialised = 1;
+ }
- return dvb_register_frontend (sp887x_ioctl, i2c, NULL, &sp887x_info);
-}
+ /* enable TS output and interface pins */
+ sp887x_writereg(state, 0xc18, 0x00d);
+ return 0;
+}
-static
-void sp887x_detach (struct dvb_i2c_bus *i2c, void *data)
+static int sp887x_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fesettings)
{
- dprintk ("%s\n", __FUNCTION__);
- dvb_unregister_frontend (sp887x_ioctl, i2c);
+ fesettings->min_delay_ms = 350;
+ fesettings->step_size = 166666*2;
+ fesettings->max_drift = (166666*2)+1;
+ return 0;
}
-
-static
-int __init init_sp887x (void)
+static void sp887x_release(struct dvb_frontend* fe)
{
- dprintk ("%s\n", __FUNCTION__);
- return dvb_register_i2c_device (NULL, sp887x_attach, sp887x_detach);
+ struct sp887x_state* state = (struct sp887x_state*) fe->demodulator_priv;
+ kfree(state);
}
+static struct dvb_frontend_ops sp887x_ops;
-static
-void __exit exit_sp887x (void)
+struct dvb_frontend* sp887x_attach(const struct sp887x_config* config,
+ struct i2c_adapter* i2c)
{
- dprintk ("%s\n", __FUNCTION__);
- dvb_unregister_i2c_device (sp887x_attach);
-}
+ struct sp887x_state* state = NULL;
+ /* allocate memory for the internal state */
+ state = (struct sp887x_state*) kmalloc(sizeof(struct sp887x_state), GFP_KERNEL);
+ if (state == NULL) goto error;
-module_init(init_sp887x);
-module_exit(exit_sp887x);
+ /* 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;
-MODULE_DESCRIPTION("sp887x DVB-T demodulator driver");
-MODULE_LICENSE("GPL");
+ /* create dvb_frontend */
+ state->frontend.ops = &state->ops;
+ state->frontend.demodulator_priv = state;
+ return &state->frontend;
+
+error:
+ if (state) kfree(state);
+ return NULL;
+}
+static struct dvb_frontend_ops sp887x_ops = {
+
+ .info = {
+ .name = "Spase SP887x DVB-T",
+ .type = FE_OFDM,
+ .frequency_min = 50500000,
+ .frequency_max = 858000000,
+ .frequency_stepsize = 166666,
+ .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
+ },
+
+ .release = sp887x_release,
+
+ .init = sp887x_init,
+ .sleep = sp887x_sleep,
+
+ .set_frontend = sp887x_setup_frontend_parameters,
+ .get_tune_settings = sp887x_get_tune_settings,
+
+ .read_status = sp887x_read_status,
+ .read_ber = sp887x_read_ber,
+ .read_signal_strength = sp887x_read_signal_strength,
+ .read_snr = sp887x_read_snr,
+ .read_ucblocks = sp887x_read_ucblocks,
+};
+
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
+
+MODULE_DESCRIPTION("Spase sp887x DVB-T demodulator driver");
+MODULE_LICENSE("GPL");
+EXPORT_SYMBOL(sp887x_attach);
git://git.onelab.eu / linux-2.6.git / blobdiff