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path: root/drivers/media/dvb/frontends/or51132.c
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Diffstat (limited to 'drivers/media/dvb/frontends/or51132.c')
-rw-r--r--drivers/media/dvb/frontends/or51132.c631
1 files changed, 0 insertions, 631 deletions
diff --git a/drivers/media/dvb/frontends/or51132.c b/drivers/media/dvb/frontends/or51132.c
deleted file mode 100644
index 5ef921823c15..000000000000
--- a/drivers/media/dvb/frontends/or51132.c
+++ /dev/null
@@ -1,631 +0,0 @@
-/*
- * Support for OR51132 (pcHDTV HD-3000) - VSB/QAM
- *
- *
- * Copyright (C) 2007 Trent Piepho <xyzzy@speakeasy.org>
- *
- * Copyright (C) 2005 Kirk Lapray <kirk_lapray@bigfoot.com>
- *
- * Based on code from Jack Kelliher (kelliher@xmission.com)
- * Copyright (C) 2002 & pcHDTV, inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
-*/
-
-/*
- * This driver needs two external firmware files. Please copy
- * "dvb-fe-or51132-vsb.fw" and "dvb-fe-or51132-qam.fw" to
- * /usr/lib/hotplug/firmware/ or /lib/firmware/
- * (depending on configuration of firmware hotplug).
- */
-#define OR51132_VSB_FIRMWARE "dvb-fe-or51132-vsb.fw"
-#define OR51132_QAM_FIRMWARE "dvb-fe-or51132-qam.fw"
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <asm/byteorder.h>
-
-#include "dvb_math.h"
-#include "dvb_frontend.h"
-#include "or51132.h"
-
-static int debug;
-#define dprintk(args...) \
- do { \
- if (debug) printk(KERN_DEBUG "or51132: " args); \
- } while (0)
-
-
-struct or51132_state
-{
- struct i2c_adapter* i2c;
-
- /* Configuration settings */
- const struct or51132_config* config;
-
- struct dvb_frontend frontend;
-
- /* Demodulator private data */
- fe_modulation_t current_modulation;
- u32 snr; /* Result of last SNR calculation */
-
- /* Tuner private data */
- u32 current_frequency;
-};
-
-
-/* Write buffer to demod */
-static int or51132_writebuf(struct or51132_state *state, const u8 *buf, int len)
-{
- int err;
- struct i2c_msg msg = { .addr = state->config->demod_address,
- .flags = 0, .buf = (u8*)buf, .len = len };
-
- /* msleep(20); */ /* doesn't appear to be necessary */
- if ((err = i2c_transfer(state->i2c, &msg, 1)) != 1) {
- printk(KERN_WARNING "or51132: I2C write (addr 0x%02x len %d) error: %d\n",
- msg.addr, msg.len, err);
- return -EREMOTEIO;
- }
- return 0;
-}
-
-/* Write constant bytes, e.g. or51132_writebytes(state, 0x04, 0x42, 0x00);
- Less code and more efficient that loading a buffer on the stack with
- the bytes to send and then calling or51132_writebuf() on that. */
-#define or51132_writebytes(state, data...) \
- ({ static const u8 _data[] = {data}; \
- or51132_writebuf(state, _data, sizeof(_data)); })
-
-/* Read data from demod into buffer. Returns 0 on success. */
-static int or51132_readbuf(struct or51132_state *state, u8 *buf, int len)
-{
- int err;
- struct i2c_msg msg = { .addr = state->config->demod_address,
- .flags = I2C_M_RD, .buf = buf, .len = len };
-
- /* msleep(20); */ /* doesn't appear to be necessary */
- if ((err = i2c_transfer(state->i2c, &msg, 1)) != 1) {
- printk(KERN_WARNING "or51132: I2C read (addr 0x%02x len %d) error: %d\n",
- msg.addr, msg.len, err);
- return -EREMOTEIO;
- }
- return 0;
-}
-
-/* Reads a 16-bit demod register. Returns <0 on error. */
-static int or51132_readreg(struct or51132_state *state, u8 reg)
-{
- u8 buf[2] = { 0x04, reg };
- struct i2c_msg msg[2] = {
- {.addr = state->config->demod_address, .flags = 0,
- .buf = buf, .len = 2 },
- {.addr = state->config->demod_address, .flags = I2C_M_RD,
- .buf = buf, .len = 2 }};
- int err;
-
- if ((err = i2c_transfer(state->i2c, msg, 2)) != 2) {
- printk(KERN_WARNING "or51132: I2C error reading register %d: %d\n",
- reg, err);
- return -EREMOTEIO;
- }
- return buf[0] | (buf[1] << 8);
-}
-
-static int or51132_load_firmware (struct dvb_frontend* fe, const struct firmware *fw)
-{
- struct or51132_state* state = fe->demodulator_priv;
- static const u8 run_buf[] = {0x7F,0x01};
- u8 rec_buf[8];
- u32 firmwareAsize, firmwareBsize;
- int i,ret;
-
- dprintk("Firmware is %Zd bytes\n",fw->size);
-
- /* Get size of firmware A and B */
- firmwareAsize = le32_to_cpu(*((__le32*)fw->data));
- dprintk("FirmwareA is %i bytes\n",firmwareAsize);
- firmwareBsize = le32_to_cpu(*((__le32*)(fw->data+4)));
- dprintk("FirmwareB is %i bytes\n",firmwareBsize);
-
- /* Upload firmware */
- if ((ret = or51132_writebuf(state, &fw->data[8], firmwareAsize))) {
- printk(KERN_WARNING "or51132: load_firmware error 1\n");
- return ret;
- }
- if ((ret = or51132_writebuf(state, &fw->data[8+firmwareAsize],
- firmwareBsize))) {
- printk(KERN_WARNING "or51132: load_firmware error 2\n");
- return ret;
- }
-
- if ((ret = or51132_writebuf(state, run_buf, 2))) {
- printk(KERN_WARNING "or51132: load_firmware error 3\n");
- return ret;
- }
- if ((ret = or51132_writebuf(state, run_buf, 2))) {
- printk(KERN_WARNING "or51132: load_firmware error 4\n");
- return ret;
- }
-
- /* 50ms for operation to begin */
- msleep(50);
-
- /* Read back ucode version to besure we loaded correctly and are really up and running */
- /* Get uCode version */
- if ((ret = or51132_writebytes(state, 0x10, 0x10, 0x00))) {
- printk(KERN_WARNING "or51132: load_firmware error a\n");
- return ret;
- }
- if ((ret = or51132_writebytes(state, 0x04, 0x17))) {
- printk(KERN_WARNING "or51132: load_firmware error b\n");
- return ret;
- }
- if ((ret = or51132_writebytes(state, 0x00, 0x00))) {
- printk(KERN_WARNING "or51132: load_firmware error c\n");
- return ret;
- }
- for (i=0;i<4;i++) {
- /* Once upon a time, this command might have had something
- to do with getting the firmware version, but it's
- not used anymore:
- {0x04,0x00,0x30,0x00,i+1} */
- /* Read 8 bytes, two bytes at a time */
- if ((ret = or51132_readbuf(state, &rec_buf[i*2], 2))) {
- printk(KERN_WARNING
- "or51132: load_firmware error d - %d\n",i);
- return ret;
- }
- }
-
- printk(KERN_WARNING
- "or51132: Version: %02X%02X%02X%02X-%02X%02X%02X%02X (%02X%01X-%01X-%02X%01X-%01X)\n",
- rec_buf[1],rec_buf[0],rec_buf[3],rec_buf[2],
- rec_buf[5],rec_buf[4],rec_buf[7],rec_buf[6],
- rec_buf[3],rec_buf[2]>>4,rec_buf[2]&0x0f,
- rec_buf[5],rec_buf[4]>>4,rec_buf[4]&0x0f);
-
- if ((ret = or51132_writebytes(state, 0x10, 0x00, 0x00))) {
- printk(KERN_WARNING "or51132: load_firmware error e\n");
- return ret;
- }
- return 0;
-};
-
-static int or51132_init(struct dvb_frontend* fe)
-{
- return 0;
-}
-
-static int or51132_read_ber(struct dvb_frontend* fe, u32* ber)
-{
- *ber = 0;
- return 0;
-}
-
-static int or51132_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
-{
- *ucblocks = 0;
- return 0;
-}
-
-static int or51132_sleep(struct dvb_frontend* fe)
-{
- return 0;
-}
-
-static int or51132_setmode(struct dvb_frontend* fe)
-{
- struct or51132_state* state = fe->demodulator_priv;
- u8 cmd_buf1[3] = {0x04, 0x01, 0x5f};
- u8 cmd_buf2[3] = {0x1c, 0x00, 0 };
-
- dprintk("setmode %d\n",(int)state->current_modulation);
-
- switch (state->current_modulation) {
- case VSB_8:
- /* Auto CH, Auto NTSC rej, MPEGser, MPEG2tr, phase noise-high */
- cmd_buf1[2] = 0x50;
- /* REC MODE inv IF spectrum, Normal */
- cmd_buf2[1] = 0x03;
- /* Channel MODE ATSC/VSB8 */
- cmd_buf2[2] = 0x06;
- break;
- /* All QAM modes are:
- Auto-deinterleave; MPEGser, MPEG2tr, phase noise-high
- REC MODE Normal Carrier Lock */
- case QAM_AUTO:
- /* Channel MODE Auto QAM64/256 */
- cmd_buf2[2] = 0x4f;
- break;
- case QAM_256:
- /* Channel MODE QAM256 */
- cmd_buf2[2] = 0x45;
- break;
- case QAM_64:
- /* Channel MODE QAM64 */
- cmd_buf2[2] = 0x43;
- break;
- default:
- printk(KERN_WARNING
- "or51132: setmode: Modulation set to unsupported value (%d)\n",
- state->current_modulation);
- return -EINVAL;
- }
-
- /* Set Receiver 1 register */
- if (or51132_writebuf(state, cmd_buf1, 3)) {
- printk(KERN_WARNING "or51132: set_mode error 1\n");
- return -EREMOTEIO;
- }
- dprintk("set #1 to %02x\n", cmd_buf1[2]);
-
- /* Set operation mode in Receiver 6 register */
- if (or51132_writebuf(state, cmd_buf2, 3)) {
- printk(KERN_WARNING "or51132: set_mode error 2\n");
- return -EREMOTEIO;
- }
- dprintk("set #6 to 0x%02x%02x\n", cmd_buf2[1], cmd_buf2[2]);
-
- return 0;
-}
-
-/* Some modulations use the same firmware. This classifies modulations
- by the firmware they use. */
-#define MOD_FWCLASS_UNKNOWN 0
-#define MOD_FWCLASS_VSB 1
-#define MOD_FWCLASS_QAM 2
-static int modulation_fw_class(fe_modulation_t modulation)
-{
- switch(modulation) {
- case VSB_8:
- return MOD_FWCLASS_VSB;
- case QAM_AUTO:
- case QAM_64:
- case QAM_256:
- return MOD_FWCLASS_QAM;
- default:
- return MOD_FWCLASS_UNKNOWN;
- }
-}
-
-static int or51132_set_parameters(struct dvb_frontend *fe)
-{
- struct dtv_frontend_properties *p = &fe->dtv_property_cache;
- int ret;
- struct or51132_state* state = fe->demodulator_priv;
- const struct firmware *fw;
- const char *fwname;
- int clock_mode;
-
- /* Upload new firmware only if we need a different one */
- if (modulation_fw_class(state->current_modulation) !=
- modulation_fw_class(p->modulation)) {
- switch (modulation_fw_class(p->modulation)) {
- case MOD_FWCLASS_VSB:
- dprintk("set_parameters VSB MODE\n");
- fwname = OR51132_VSB_FIRMWARE;
-
- /* Set non-punctured clock for VSB */
- clock_mode = 0;
- break;
- case MOD_FWCLASS_QAM:
- dprintk("set_parameters QAM MODE\n");
- fwname = OR51132_QAM_FIRMWARE;
-
- /* Set punctured clock for QAM */
- clock_mode = 1;
- break;
- default:
- printk("or51132: Modulation type(%d) UNSUPPORTED\n",
- p->modulation);
- return -1;
- }
- printk("or51132: Waiting for firmware upload(%s)...\n",
- fwname);
- ret = request_firmware(&fw, fwname, state->i2c->dev.parent);
- if (ret) {
- printk(KERN_WARNING "or51132: No firmware up"
- "loaded(timeout or file not found?)\n");
- return ret;
- }
- ret = or51132_load_firmware(fe, fw);
- release_firmware(fw);
- if (ret) {
- printk(KERN_WARNING "or51132: Writing firmware to "
- "device failed!\n");
- return ret;
- }
- printk("or51132: Firmware upload complete.\n");
- state->config->set_ts_params(fe, clock_mode);
- }
- /* Change only if we are actually changing the modulation */
- if (state->current_modulation != p->modulation) {
- state->current_modulation = p->modulation;
- or51132_setmode(fe);
- }
-
- if (fe->ops.tuner_ops.set_params) {
- fe->ops.tuner_ops.set_params(fe);
- if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0);
- }
-
- /* Set to current mode */
- or51132_setmode(fe);
-
- /* Update current frequency */
- state->current_frequency = p->frequency;
- return 0;
-}
-
-static int or51132_get_parameters(struct dvb_frontend* fe)
-{
- struct dtv_frontend_properties *p = &fe->dtv_property_cache;
- struct or51132_state* state = fe->demodulator_priv;
- int status;
- int retry = 1;
-
-start:
- /* Receiver Status */
- if ((status = or51132_readreg(state, 0x00)) < 0) {
- printk(KERN_WARNING "or51132: get_parameters: error reading receiver status\n");
- return -EREMOTEIO;
- }
- switch(status&0xff) {
- case 0x06:
- p->modulation = VSB_8;
- break;
- case 0x43:
- p->modulation = QAM_64;
- break;
- case 0x45:
- p->modulation = QAM_256;
- break;
- default:
- if (retry--)
- goto start;
- printk(KERN_WARNING "or51132: unknown status 0x%02x\n",
- status&0xff);
- return -EREMOTEIO;
- }
-
- /* FIXME: Read frequency from frontend, take AFC into account */
- p->frequency = state->current_frequency;
-
- /* FIXME: How to read inversion setting? Receiver 6 register? */
- p->inversion = INVERSION_AUTO;
-
- return 0;
-}
-
-static int or51132_read_status(struct dvb_frontend* fe, fe_status_t* status)
-{
- struct or51132_state* state = fe->demodulator_priv;
- int reg;
-
- /* Receiver Status */
- if ((reg = or51132_readreg(state, 0x00)) < 0) {
- printk(KERN_WARNING "or51132: read_status: error reading receiver status: %d\n", reg);
- *status = 0;
- return -EREMOTEIO;
- }
- dprintk("%s: read_status %04x\n", __func__, reg);
-
- if (reg & 0x0100) /* Receiver Lock */
- *status = FE_HAS_SIGNAL|FE_HAS_CARRIER|FE_HAS_VITERBI|
- FE_HAS_SYNC|FE_HAS_LOCK;
- else
- *status = 0;
- return 0;
-}
-
-/* Calculate SNR estimation (scaled by 2^24)
-
- 8-VSB SNR and QAM equations from Oren datasheets
-
- For 8-VSB:
- SNR[dB] = 10 * log10(897152044.8282 / MSE^2 ) - K
-
- Where K = 0 if NTSC rejection filter is OFF; and
- K = 3 if NTSC rejection filter is ON
-
- For QAM64:
- SNR[dB] = 10 * log10(897152044.8282 / MSE^2 )
-
- For QAM256:
- SNR[dB] = 10 * log10(907832426.314266 / MSE^2 )
-
- We re-write the snr equation as:
- SNR * 2^24 = 10*(c - 2*intlog10(MSE))
- Where for QAM256, c = log10(907832426.314266) * 2^24
- and for 8-VSB and QAM64, c = log10(897152044.8282) * 2^24 */
-
-static u32 calculate_snr(u32 mse, u32 c)
-{
- if (mse == 0) /* No signal */
- return 0;
-
- mse = 2*intlog10(mse);
- if (mse > c) {
- /* Negative SNR, which is possible, but realisticly the
- demod will lose lock before the signal gets this bad. The
- API only allows for unsigned values, so just return 0 */
- return 0;
- }
- return 10*(c - mse);
-}
-
-static int or51132_read_snr(struct dvb_frontend* fe, u16* snr)
-{
- struct or51132_state* state = fe->demodulator_priv;
- int noise, reg;
- u32 c, usK = 0;
- int retry = 1;
-
-start:
- /* SNR after Equalizer */
- noise = or51132_readreg(state, 0x02);
- if (noise < 0) {
- printk(KERN_WARNING "or51132: read_snr: error reading equalizer\n");
- return -EREMOTEIO;
- }
- dprintk("read_snr noise (%d)\n", noise);
-
- /* Read status, contains modulation type for QAM_AUTO and
- NTSC filter for VSB */
- reg = or51132_readreg(state, 0x00);
- if (reg < 0) {
- printk(KERN_WARNING "or51132: read_snr: error reading receiver status\n");
- return -EREMOTEIO;
- }
-
- switch (reg&0xff) {
- case 0x06:
- if (reg & 0x1000) usK = 3 << 24;
- /* Fall through to QAM64 case */
- case 0x43:
- c = 150204167;
- break;
- case 0x45:
- c = 150290396;
- break;
- default:
- printk(KERN_WARNING "or51132: unknown status 0x%02x\n", reg&0xff);
- if (retry--) goto start;
- return -EREMOTEIO;
- }
- dprintk("%s: modulation %02x, NTSC rej O%s\n", __func__,
- reg&0xff, reg&0x1000?"n":"ff");
-
- /* Calculate SNR using noise, c, and NTSC rejection correction */
- state->snr = calculate_snr(noise, c) - usK;
- *snr = (state->snr) >> 16;
-
- dprintk("%s: noise = 0x%08x, snr = %d.%02d dB\n", __func__, noise,
- state->snr >> 24, (((state->snr>>8) & 0xffff) * 100) >> 16);
-
- return 0;
-}
-
-static int or51132_read_signal_strength(struct dvb_frontend* fe, u16* strength)
-{
- /* Calculate Strength from SNR up to 35dB */
- /* Even though the SNR can go higher than 35dB, there is some comfort */
- /* factor in having a range of strong signals that can show at 100% */
- struct or51132_state* state = (struct or51132_state*) fe->demodulator_priv;
- u16 snr;
- int ret;
-
- ret = fe->ops.read_snr(fe, &snr);
- if (ret != 0)
- return ret;
- /* Rather than use the 8.8 value snr, use state->snr which is 8.24 */
- /* scale the range 0 - 35*2^24 into 0 - 65535 */
- if (state->snr >= 8960 * 0x10000)
- *strength = 0xffff;
- else
- *strength = state->snr / 8960;
-
- return 0;
-}
-
-static int or51132_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fe_tune_settings)
-{
- fe_tune_settings->min_delay_ms = 500;
- fe_tune_settings->step_size = 0;
- fe_tune_settings->max_drift = 0;
-
- return 0;
-}
-
-static void or51132_release(struct dvb_frontend* fe)
-{
- struct or51132_state* state = fe->demodulator_priv;
- kfree(state);
-}
-
-static struct dvb_frontend_ops or51132_ops;
-
-struct dvb_frontend* or51132_attach(const struct or51132_config* config,
- struct i2c_adapter* i2c)
-{
- struct or51132_state* state = NULL;
-
- /* Allocate memory for the internal state */
- state = kzalloc(sizeof(struct or51132_state), GFP_KERNEL);
- if (state == NULL)
- return NULL;
-
- /* Setup the state */
- state->config = config;
- state->i2c = i2c;
- state->current_frequency = -1;
- state->current_modulation = -1;
-
- /* Create dvb_frontend */
- memcpy(&state->frontend.ops, &or51132_ops, sizeof(struct dvb_frontend_ops));
- state->frontend.demodulator_priv = state;
- return &state->frontend;
-}
-
-static struct dvb_frontend_ops or51132_ops = {
- .delsys = { SYS_ATSC, SYS_DVBC_ANNEX_B },
- .info = {
- .name = "Oren OR51132 VSB/QAM Frontend",
- .frequency_min = 44000000,
- .frequency_max = 958000000,
- .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_QAM_64 | FE_CAN_QAM_256 | FE_CAN_QAM_AUTO |
- FE_CAN_8VSB
- },
-
- .release = or51132_release,
-
- .init = or51132_init,
- .sleep = or51132_sleep,
-
- .set_frontend = or51132_set_parameters,
- .get_frontend = or51132_get_parameters,
- .get_tune_settings = or51132_get_tune_settings,
-
- .read_status = or51132_read_status,
- .read_ber = or51132_read_ber,
- .read_signal_strength = or51132_read_signal_strength,
- .read_snr = or51132_read_snr,
- .read_ucblocks = or51132_read_ucblocks,
-};
-
-module_param(debug, int, 0644);
-MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
-
-MODULE_DESCRIPTION("OR51132 ATSC [pcHDTV HD-3000] (8VSB & ITU J83 AnnexB FEC QAM64/256) Demodulator Driver");
-MODULE_AUTHOR("Kirk Lapray");
-MODULE_AUTHOR("Trent Piepho");
-MODULE_LICENSE("GPL");
-
-EXPORT_SYMBOL(or51132_attach);
-
-/*
- * Local variables:
- * c-basic-offset: 8
- * End:
- */