--- /dev/null
+/*
+ * Samsung s5h1432 DVB-T demodulator driver
+ *
+ * Copyright (C) 2009 Bill Liu <Bill.Liu@Conexant.com>
+ *
+ * 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.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include "dvb_frontend.h"
+#include "s5h1432.h"
+
+struct s5h1432_state {
+
+ struct i2c_adapter *i2c;
+
+ /* configuration settings */
+ const struct s5h1432_config *config;
+
+ struct dvb_frontend frontend;
+
+ fe_modulation_t current_modulation;
+ unsigned int first_tune:1;
+
+ u32 current_frequency;
+ int if_freq;
+
+ u8 inversion;
+};
+
+static int debug;
+
+#define dprintk(arg...) do { \
+ if (debug) \
+ printk(arg); \
+ } while (0)
+
+static int s5h1432_writereg(struct s5h1432_state *state,
+ u8 addr, u8 reg, u8 data)
+{
+ int ret;
+ u8 buf[] = { reg, data };
+
+ struct i2c_msg msg = {.addr = addr, .flags = 0, .buf = buf, .len = 2 };
+
+ ret = i2c_transfer(state->i2c, &msg, 1);
+
+ if (ret != 1)
+ printk(KERN_ERR "%s: writereg error 0x%02x 0x%02x 0x%04x, "
+ "ret == %i)\n", __func__, addr, reg, data, ret);
+
+ return (ret != 1) ? -1 : 0;
+}
+
+static u8 s5h1432_readreg(struct s5h1432_state *state, u8 addr, u8 reg)
+{
+ int ret;
+ u8 b0[] = { reg };
+ u8 b1[] = { 0 };
+
+ struct i2c_msg msg[] = {
+ {.addr = addr, .flags = 0, .buf = b0, .len = 1},
+ {.addr = addr, .flags = I2C_M_RD, .buf = b1, .len = 1}
+ };
+
+ ret = i2c_transfer(state->i2c, msg, 2);
+
+ if (ret != 2)
+ printk(KERN_ERR "%s: readreg error (ret == %i)\n",
+ __func__, ret);
+ return b1[0];
+}
+
+static int s5h1432_sleep(struct dvb_frontend *fe)
+{
+ return 0;
+}
+
+static int s5h1432_set_channel_bandwidth(struct dvb_frontend *fe,
+ u32 bandwidth)
+{
+ struct s5h1432_state *state = fe->demodulator_priv;
+
+ u8 reg = 0;
+
+ /* Register [0x2E] bit 3:2 : 8MHz = 0; 7MHz = 1; 6MHz = 2 */
+ reg = s5h1432_readreg(state, S5H1432_I2C_TOP_ADDR, 0x2E);
+ reg &= ~(0x0C);
+ switch (bandwidth) {
+ case 6:
+ reg |= 0x08;
+ break;
+ case 7:
+ reg |= 0x04;
+ break;
+ case 8:
+ reg |= 0x00;
+ break;
+ default:
+ return 0;
+ }
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x2E, reg);
+ return 1;
+}
+
+static int s5h1432_set_IF(struct dvb_frontend *fe, u32 ifFreqHz)
+{
+ struct s5h1432_state *state = fe->demodulator_priv;
+
+ switch (ifFreqHz) {
+ case TAIWAN_HI_IF_FREQ_44_MHZ:
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe4, 0x55);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe5, 0x55);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe7, 0x15);
+ break;
+ case EUROPE_HI_IF_FREQ_36_MHZ:
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe4, 0x00);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe5, 0x00);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe7, 0x40);
+ break;
+ case IF_FREQ_6_MHZ:
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe4, 0x00);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe5, 0x00);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe7, 0xe0);
+ break;
+ case IF_FREQ_3point3_MHZ:
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe4, 0x66);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe5, 0x66);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe7, 0xEE);
+ break;
+ case IF_FREQ_3point5_MHZ:
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe4, 0x55);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe5, 0x55);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe7, 0xED);
+ break;
+ case IF_FREQ_4_MHZ:
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe4, 0xAA);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe5, 0xAA);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe7, 0xEA);
+ break;
+ default:
+ {
+ u32 value = 0;
+ value = (u32) (((48000 - (ifFreqHz / 1000)) * 512 *
+ (u32) 32768) / (48 * 1000));
+ printk(KERN_INFO
+ "Default IFFreq %d :reg value = 0x%x\n",
+ ifFreqHz, value);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe4,
+ (u8) value & 0xFF);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe5,
+ (u8) (value >> 8) & 0xFF);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe7,
+ (u8) (value >> 16) & 0xFF);
+ break;
+ }
+
+ }
+
+ return 1;
+}
+
+/* Talk to the demod, set the FEC, GUARD, QAM settings etc */
+static int s5h1432_set_frontend(struct dvb_frontend *fe)
+{
+ struct dtv_frontend_properties *p = &fe->dtv_property_cache;
+ u32 dvb_bandwidth = 8;
+ struct s5h1432_state *state = fe->demodulator_priv;
+
+ if (p->frequency == state->current_frequency) {
+ /*current_frequency = p->frequency; */
+ /*state->current_frequency = p->frequency; */
+ } else {
+ fe->ops.tuner_ops.set_params(fe);
+ msleep(300);
+ s5h1432_set_channel_bandwidth(fe, dvb_bandwidth);
+ switch (p->bandwidth_hz) {
+ case 6000000:
+ dvb_bandwidth = 6;
+ s5h1432_set_IF(fe, IF_FREQ_4_MHZ);
+ break;
+ case 7000000:
+ dvb_bandwidth = 7;
+ s5h1432_set_IF(fe, IF_FREQ_4_MHZ);
+ break;
+ case 8000000:
+ dvb_bandwidth = 8;
+ s5h1432_set_IF(fe, IF_FREQ_4_MHZ);
+ break;
+ default:
+ return 0;
+ }
+ /*fe->ops.tuner_ops.set_params(fe); */
+/*Soft Reset chip*/
+ msleep(30);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x09, 0x1a);
+ msleep(30);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x09, 0x1b);
+
+ s5h1432_set_channel_bandwidth(fe, dvb_bandwidth);
+ switch (p->bandwidth_hz) {
+ case 6000000:
+ dvb_bandwidth = 6;
+ s5h1432_set_IF(fe, IF_FREQ_4_MHZ);
+ break;
+ case 7000000:
+ dvb_bandwidth = 7;
+ s5h1432_set_IF(fe, IF_FREQ_4_MHZ);
+ break;
+ case 8000000:
+ dvb_bandwidth = 8;
+ s5h1432_set_IF(fe, IF_FREQ_4_MHZ);
+ break;
+ default:
+ return 0;
+ }
+ /*fe->ops.tuner_ops.set_params(fe); */
+ /*Soft Reset chip*/
+ msleep(30);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x09, 0x1a);
+ msleep(30);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x09, 0x1b);
+
+ }
+
+ state->current_frequency = p->frequency;
+
+ return 0;
+}
+
+static int s5h1432_init(struct dvb_frontend *fe)
+{
+ struct s5h1432_state *state = fe->demodulator_priv;
+
+ u8 reg = 0;
+ state->current_frequency = 0;
+ printk(KERN_INFO " s5h1432_init().\n");
+
+ /*Set VSB mode as default, this also does a soft reset */
+ /*Initialize registers */
+
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x04, 0xa8);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x05, 0x01);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x07, 0x70);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x19, 0x80);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x1b, 0x9D);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x1c, 0x30);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x1d, 0x20);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x1e, 0x1B);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x2e, 0x40);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x42, 0x84);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x50, 0x5a);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x5a, 0xd3);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x68, 0x50);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xb8, 0x3c);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xc4, 0x10);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xcc, 0x9c);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xDA, 0x00);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe1, 0x94);
+ /* s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xf4, 0xa1); */
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xf9, 0x00);
+
+ /*For NXP tuner*/
+
+ /*Set 3.3MHz as default IF frequency */
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe4, 0x66);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe5, 0x66);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe7, 0xEE);
+ /* Set reg 0x1E to get the full dynamic range */
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x1e, 0x31);
+
+ /* Mode setting in demod */
+ reg = s5h1432_readreg(state, S5H1432_I2C_TOP_ADDR, 0x42);
+ reg |= 0x80;
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x42, reg);
+ /* Serial mode */
+
+ /* Soft Reset chip */
+
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x09, 0x1a);
+ msleep(30);
+ s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x09, 0x1b);
+
+
+ return 0;
+}
+
+static int s5h1432_read_status(struct dvb_frontend *fe, fe_status_t *status)
+{
+ return 0;
+}
+
+static int s5h1432_read_signal_strength(struct dvb_frontend *fe,
+ u16 *signal_strength)
+{
+ return 0;
+}
+
+static int s5h1432_read_snr(struct dvb_frontend *fe, u16 *snr)
+{
+ return 0;
+}
+
+static int s5h1432_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
+{
+
+ return 0;
+}
+
+static int s5h1432_read_ber(struct dvb_frontend *fe, u32 *ber)
+{
+ return 0;
+}
+
+static int s5h1432_get_tune_settings(struct dvb_frontend *fe,
+ struct dvb_frontend_tune_settings *tune)
+{
+ return 0;
+}
+
+static void s5h1432_release(struct dvb_frontend *fe)
+{
+ struct s5h1432_state *state = fe->demodulator_priv;
+ kfree(state);
+}
+
+static struct dvb_frontend_ops s5h1432_ops;
+
+struct dvb_frontend *s5h1432_attach(const struct s5h1432_config *config,
+ struct i2c_adapter *i2c)
+{
+ struct s5h1432_state *state = NULL;
+
+ printk(KERN_INFO " Enter s5h1432_attach(). attach success!\n");
+ /* allocate memory for the internal state */
+ state = kmalloc(sizeof(struct s5h1432_state), GFP_KERNEL);
+ if (!state)
+ return NULL;
+
+ /* setup the state */
+ state->config = config;
+ state->i2c = i2c;
+ state->current_modulation = QAM_16;
+ state->inversion = state->config->inversion;
+
+ /* create dvb_frontend */
+ memcpy(&state->frontend.ops, &s5h1432_ops,
+ sizeof(struct dvb_frontend_ops));
+
+ state->frontend.demodulator_priv = state;
+
+ return &state->frontend;
+}
+EXPORT_SYMBOL(s5h1432_attach);
+
+static struct dvb_frontend_ops s5h1432_ops = {
+ .delsys = { SYS_DVBT },
+ .info = {
+ .name = "Samsung s5h1432 DVB-T Frontend",
+ .frequency_min = 177000000,
+ .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_QAM_AUTO |
+ FE_CAN_HIERARCHY_AUTO | FE_CAN_GUARD_INTERVAL_AUTO |
+ FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_RECOVER},
+
+ .init = s5h1432_init,
+ .sleep = s5h1432_sleep,
+ .set_frontend = s5h1432_set_frontend,
+ .get_tune_settings = s5h1432_get_tune_settings,
+ .read_status = s5h1432_read_status,
+ .read_ber = s5h1432_read_ber,
+ .read_signal_strength = s5h1432_read_signal_strength,
+ .read_snr = s5h1432_read_snr,
+ .read_ucblocks = s5h1432_read_ucblocks,
+ .release = s5h1432_release,
+};
+
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Enable verbose debug messages");
+
+MODULE_DESCRIPTION("Samsung s5h1432 DVB-T Demodulator driver");
+MODULE_AUTHOR("Bill Liu");
+MODULE_LICENSE("GPL");
Code Review / kvmfornfv.git / blobdiff