Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 555 insertions, 0 deletions

diff --git a/drivers/media/dvb-frontends/or51211.c b/drivers/media/dvb-frontends/or51211.c
new file mode 100644
index 0000000000..2e8e7071a6
--- /dev/null
+++ b/drivers/media/dvb-frontends/or51211.c
@@ -0,0 +1,555 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *    Support for OR51211 (pcHDTV HD-2000) - VSB
+ *
+ *    Copyright (C) 2005 Kirk Lapray <kirk_lapray@bigfoot.com>
+ *
+ *    Based on code from Jack Kelliher (kelliher@xmission.com)
+ *                           Copyright (C) 2002 & pcHDTV, inc.
+*/
+
+#define pr_fmt(fmt)	KBUILD_MODNAME ": %s: " fmt, __func__
+
+/*
+ * This driver needs external firmware. Please use the command
+ * "<kerneldir>/scripts/get_dvb_firmware or51211" to
+ * download/extract it, and then copy it to /usr/lib/hotplug/firmware
+ * or /lib/firmware (depending on configuration of firmware hotplug).
+ */
+#define OR51211_DEFAULT_FIRMWARE "dvb-fe-or51211.fw"
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/firmware.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+#include <asm/byteorder.h>
+
+#include <linux/int_log.h>
+#include <media/dvb_frontend.h>
+#include "or51211.h"
+
+static int debug;
+#define dprintk(args...) \
+	do { if (debug) pr_debug(args); } while (0)
+
+static u8 run_buf[] = {0x7f,0x01};
+static u8 cmd_buf[] = {0x04,0x01,0x50,0x80,0x06}; // ATSC
+
+struct or51211_state {
+
+	struct i2c_adapter* i2c;
+
+	/* Configuration settings */
+	const struct or51211_config* config;
+
+	struct dvb_frontend frontend;
+	struct bt878* bt;
+
+	/* Demodulator private data */
+	u8 initialized:1;
+	u32 snr; /* Result of last SNR calculation */
+
+	/* Tuner private data */
+	u32 current_frequency;
+};
+
+static int i2c_writebytes (struct or51211_state* state, u8 reg, const u8 *buf,
+			   int len)
+{
+	int err;
+	struct i2c_msg msg;
+	msg.addr	= reg;
+	msg.flags	= 0;
+	msg.len		= len;
+	msg.buf		= (u8 *)buf;
+
+	if ((err = i2c_transfer (state->i2c, &msg, 1)) != 1) {
+		pr_warn("error (addr %02x, err == %i)\n", reg, err);
+		return -EREMOTEIO;
+	}
+
+	return 0;
+}
+
+static int i2c_readbytes(struct or51211_state *state, u8 reg, u8 *buf, int len)
+{
+	int err;
+	struct i2c_msg msg;
+	msg.addr	= reg;
+	msg.flags	= I2C_M_RD;
+	msg.len		= len;
+	msg.buf		= buf;
+
+	if ((err = i2c_transfer (state->i2c, &msg, 1)) != 1) {
+		pr_warn("error (addr %02x, err == %i)\n", reg, err);
+		return -EREMOTEIO;
+	}
+
+	return 0;
+}
+
+static int or51211_load_firmware (struct dvb_frontend* fe,
+				  const struct firmware *fw)
+{
+	struct or51211_state* state = fe->demodulator_priv;
+	u8 tudata[585];
+	int i;
+
+	dprintk("Firmware is %zu bytes\n", fw->size);
+
+	/* Get eprom data */
+	tudata[0] = 17;
+	if (i2c_writebytes(state,0x50,tudata,1)) {
+		pr_warn("error eprom addr\n");
+		return -1;
+	}
+	if (i2c_readbytes(state,0x50,&tudata[145],192)) {
+		pr_warn("error eprom\n");
+		return -1;
+	}
+
+	/* Create firmware buffer */
+	for (i = 0; i < 145; i++)
+		tudata[i] = fw->data[i];
+
+	for (i = 0; i < 248; i++)
+		tudata[i+337] = fw->data[145+i];
+
+	state->config->reset(fe);
+
+	if (i2c_writebytes(state,state->config->demod_address,tudata,585)) {
+		pr_warn("error 1\n");
+		return -1;
+	}
+	msleep(1);
+
+	if (i2c_writebytes(state,state->config->demod_address,
+			   &fw->data[393],8125)) {
+		pr_warn("error 2\n");
+		return -1;
+	}
+	msleep(1);
+
+	if (i2c_writebytes(state,state->config->demod_address,run_buf,2)) {
+		pr_warn("error 3\n");
+		return -1;
+	}
+
+	/* Wait at least 5 msec */
+	msleep(10);
+	if (i2c_writebytes(state,state->config->demod_address,run_buf,2)) {
+		pr_warn("error 4\n");
+		return -1;
+	}
+	msleep(10);
+
+	pr_info("Done.\n");
+	return 0;
+};
+
+static int or51211_setmode(struct dvb_frontend* fe, int mode)
+{
+	struct or51211_state* state = fe->demodulator_priv;
+	u8 rec_buf[14];
+
+	state->config->setmode(fe, mode);
+
+	if (i2c_writebytes(state,state->config->demod_address,run_buf,2)) {
+		pr_warn("error 1\n");
+		return -1;
+	}
+
+	/* Wait at least 5 msec */
+	msleep(10);
+	if (i2c_writebytes(state,state->config->demod_address,run_buf,2)) {
+		pr_warn("error 2\n");
+		return -1;
+	}
+
+	msleep(10);
+
+	/* Set operation mode in Receiver 1 register;
+	 * type 1:
+	 * data 0x50h  Automatic sets receiver channel conditions
+	 *             Automatic NTSC rejection filter
+	 *             Enable  MPEG serial data output
+	 *             MPEG2tr
+	 *             High tuner phase noise
+	 *             normal +/-150kHz Carrier acquisition range
+	 */
+	if (i2c_writebytes(state,state->config->demod_address,cmd_buf,3)) {
+		pr_warn("error 3\n");
+		return -1;
+	}
+
+	rec_buf[0] = 0x04;
+	rec_buf[1] = 0x00;
+	rec_buf[2] = 0x03;
+	rec_buf[3] = 0x00;
+	msleep(20);
+	if (i2c_writebytes(state,state->config->demod_address,rec_buf,3)) {
+		pr_warn("error 5\n");
+	}
+	msleep(3);
+	if (i2c_readbytes(state,state->config->demod_address,&rec_buf[10],2)) {
+		pr_warn("error 6\n");
+		return -1;
+	}
+	dprintk("rec status %02x %02x\n", rec_buf[10], rec_buf[11]);
+
+	return 0;
+}
+
+static int or51211_set_parameters(struct dvb_frontend *fe)
+{
+	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
+	struct or51211_state* state = fe->demodulator_priv;
+
+	/* Change only if we are actually changing the channel */
+	if (state->current_frequency != p->frequency) {
+		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 ATSC mode */
+		or51211_setmode(fe,0);
+
+		/* Update current frequency */
+		state->current_frequency = p->frequency;
+	}
+	return 0;
+}
+
+static int or51211_read_status(struct dvb_frontend *fe, enum fe_status *status)
+{
+	struct or51211_state* state = fe->demodulator_priv;
+	unsigned char rec_buf[2];
+	unsigned char snd_buf[] = {0x04,0x00,0x03,0x00};
+	*status = 0;
+
+	/* Receiver Status */
+	if (i2c_writebytes(state,state->config->demod_address,snd_buf,3)) {
+		pr_warn("write error\n");
+		return -1;
+	}
+	msleep(3);
+	if (i2c_readbytes(state,state->config->demod_address,rec_buf,2)) {
+		pr_warn("read error\n");
+		return -1;
+	}
+	dprintk("%x %x\n", rec_buf[0], rec_buf[1]);
+
+	if (rec_buf[0] &  0x01) { /* Receiver Lock */
+		*status |= FE_HAS_SIGNAL;
+		*status |= FE_HAS_CARRIER;
+		*status |= FE_HAS_VITERBI;
+		*status |= FE_HAS_SYNC;
+		*status |= FE_HAS_LOCK;
+	}
+	return 0;
+}
+
+/* Calculate SNR estimation (scaled by 2^24)
+
+   8-VSB SNR equation from Oren datasheets
+
+   For 8-VSB:
+     SNR[dB] = 10 * log10(219037.9454 / MSE^2 )
+
+   We re-write the snr equation as:
+     SNR * 2^24 = 10*(c - 2*intlog10(MSE))
+   Where for 8-VSB, c = log10(219037.9454) * 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 or51211_read_snr(struct dvb_frontend* fe, u16* snr)
+{
+	struct or51211_state* state = fe->demodulator_priv;
+	u8 rec_buf[2];
+	u8 snd_buf[3];
+
+	/* SNR after Equalizer */
+	snd_buf[0] = 0x04;
+	snd_buf[1] = 0x00;
+	snd_buf[2] = 0x04;
+
+	if (i2c_writebytes(state,state->config->demod_address,snd_buf,3)) {
+		pr_warn("error writing snr reg\n");
+		return -1;
+	}
+	if (i2c_readbytes(state,state->config->demod_address,rec_buf,2)) {
+		pr_warn("read_status read error\n");
+		return -1;
+	}
+
+	state->snr = calculate_snr(rec_buf[0], 89599047);
+	*snr = (state->snr) >> 16;
+
+	dprintk("noise = 0x%02x, snr = %d.%02d dB\n", rec_buf[0],
+		state->snr >> 24, (((state->snr>>8) & 0xffff) * 100) >> 16);
+
+	return 0;
+}
+
+static int or51211_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 or51211_state* state = (struct or51211_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 or51211_read_ber(struct dvb_frontend* fe, u32* ber)
+{
+	*ber = -ENOSYS;
+	return 0;
+}
+
+static int or51211_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
+{
+	*ucblocks = -ENOSYS;
+	return 0;
+}
+
+static int or51211_sleep(struct dvb_frontend* fe)
+{
+	return 0;
+}
+
+static int or51211_init(struct dvb_frontend* fe)
+{
+	struct or51211_state* state = fe->demodulator_priv;
+	const struct or51211_config* config = state->config;
+	const struct firmware* fw;
+	unsigned char get_ver_buf[] = {0x04,0x00,0x30,0x00,0x00};
+	unsigned char rec_buf[14];
+	int ret,i;
+
+	if (!state->initialized) {
+		/* Request the firmware, this will block until it uploads */
+		pr_info("Waiting for firmware upload (%s)...\n",
+			OR51211_DEFAULT_FIRMWARE);
+		ret = config->request_firmware(fe, &fw,
+					       OR51211_DEFAULT_FIRMWARE);
+		pr_info("Got Hotplug firmware\n");
+		if (ret) {
+			pr_warn("No firmware uploaded (timeout or file not found?)\n");
+			return ret;
+		}
+
+		ret = or51211_load_firmware(fe, fw);
+		release_firmware(fw);
+		if (ret) {
+			pr_warn("Writing firmware to device failed!\n");
+			return ret;
+		}
+		pr_info("Firmware upload complete.\n");
+
+		/* Set operation mode in Receiver 1 register;
+		 * type 1:
+		 * data 0x50h  Automatic sets receiver channel conditions
+		 *             Automatic NTSC rejection filter
+		 *             Enable  MPEG serial data output
+		 *             MPEG2tr
+		 *             High tuner phase noise
+		 *             normal +/-150kHz Carrier acquisition range
+		 */
+		if (i2c_writebytes(state,state->config->demod_address,
+				   cmd_buf,3)) {
+			pr_warn("Load DVR Error 5\n");
+			return -1;
+		}
+
+		/* Read back ucode version to besure we loaded correctly */
+		/* and are really up and running */
+		rec_buf[0] = 0x04;
+		rec_buf[1] = 0x00;
+		rec_buf[2] = 0x03;
+		rec_buf[3] = 0x00;
+		msleep(30);
+		if (i2c_writebytes(state,state->config->demod_address,
+				   rec_buf,3)) {
+			pr_warn("Load DVR Error A\n");
+			return -1;
+		}
+		msleep(3);
+		if (i2c_readbytes(state,state->config->demod_address,
+				  &rec_buf[10],2)) {
+			pr_warn("Load DVR Error B\n");
+			return -1;
+		}
+
+		rec_buf[0] = 0x04;
+		rec_buf[1] = 0x00;
+		rec_buf[2] = 0x01;
+		rec_buf[3] = 0x00;
+		msleep(20);
+		if (i2c_writebytes(state,state->config->demod_address,
+				   rec_buf,3)) {
+			pr_warn("Load DVR Error C\n");
+			return -1;
+		}
+		msleep(3);
+		if (i2c_readbytes(state,state->config->demod_address,
+				  &rec_buf[12],2)) {
+			pr_warn("Load DVR Error D\n");
+			return -1;
+		}
+
+		for (i = 0; i < 8; i++)
+			rec_buf[i]=0xed;
+
+		for (i = 0; i < 5; i++) {
+			msleep(30);
+			get_ver_buf[4] = i+1;
+			if (i2c_writebytes(state,state->config->demod_address,
+					   get_ver_buf,5)) {
+				pr_warn("Load DVR Error 6 - %d\n", i);
+				return -1;
+			}
+			msleep(3);
+
+			if (i2c_readbytes(state,state->config->demod_address,
+					  &rec_buf[i*2],2)) {
+				pr_warn("Load DVR Error 7 - %d\n", i);
+				return -1;
+			}
+			/* If we didn't receive the right index, try again */
+			if ((int)rec_buf[i*2+1]!=i+1){
+			  i--;
+			}
+		}
+		dprintk("read_fwbits %10ph\n", rec_buf);
+
+		pr_info("ver TU%02x%02x%02x VSB mode %02x Status %02x\n",
+			rec_buf[2], rec_buf[4], rec_buf[6], rec_buf[12],
+			rec_buf[10]);
+
+		rec_buf[0] = 0x04;
+		rec_buf[1] = 0x00;
+		rec_buf[2] = 0x03;
+		rec_buf[3] = 0x00;
+		msleep(20);
+		if (i2c_writebytes(state,state->config->demod_address,
+				   rec_buf,3)) {
+			pr_warn("Load DVR Error 8\n");
+			return -1;
+		}
+		msleep(20);
+		if (i2c_readbytes(state,state->config->demod_address,
+				  &rec_buf[8],2)) {
+			pr_warn("Load DVR Error 9\n");
+			return -1;
+		}
+		state->initialized = 1;
+	}
+
+	return 0;
+}
+
+static int or51211_get_tune_settings(struct dvb_frontend* fe,
+				     struct dvb_frontend_tune_settings* fesettings)
+{
+	fesettings->min_delay_ms = 500;
+	fesettings->step_size = 0;
+	fesettings->max_drift = 0;
+	return 0;
+}
+
+static void or51211_release(struct dvb_frontend* fe)
+{
+	struct or51211_state* state = fe->demodulator_priv;
+	state->config->sleep(fe);
+	kfree(state);
+}
+
+static const struct dvb_frontend_ops or51211_ops;
+
+struct dvb_frontend* or51211_attach(const struct or51211_config* config,
+				    struct i2c_adapter* i2c)
+{
+	struct or51211_state* state = NULL;
+
+	/* Allocate memory for the internal state */
+	state = kzalloc(sizeof(struct or51211_state), GFP_KERNEL);
+	if (state == NULL)
+		return NULL;
+
+	/* Setup the state */
+	state->config = config;
+	state->i2c = i2c;
+	state->initialized = 0;
+	state->current_frequency = 0;
+
+	/* Create dvb_frontend */
+	memcpy(&state->frontend.ops, &or51211_ops, sizeof(struct dvb_frontend_ops));
+	state->frontend.demodulator_priv = state;
+	return &state->frontend;
+}
+
+static const struct dvb_frontend_ops or51211_ops = {
+	.delsys = { SYS_ATSC, SYS_DVBC_ANNEX_B },
+	.info = {
+		.name                  = "Oren OR51211 VSB Frontend",
+		.frequency_min_hz      =  44 * MHz,
+		.frequency_max_hz      = 958 * MHz,
+		.frequency_stepsize_hz = 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_8VSB
+	},
+
+	.release = or51211_release,
+
+	.init = or51211_init,
+	.sleep = or51211_sleep,
+
+	.set_frontend = or51211_set_parameters,
+	.get_tune_settings = or51211_get_tune_settings,
+
+	.read_status = or51211_read_status,
+	.read_ber = or51211_read_ber,
+	.read_signal_strength = or51211_read_signal_strength,
+	.read_snr = or51211_read_snr,
+	.read_ucblocks = or51211_read_ucblocks,
+};
+
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
+
+MODULE_DESCRIPTION("Oren OR51211 VSB [pcHDTV HD-2000] Demodulator Driver");
+MODULE_AUTHOR("Kirk Lapray");
+MODULE_LICENSE("GPL");
+
+EXPORT_SYMBOL_GPL(or51211_attach);
+