--- /dev/null
+ /*
+ Driver for ST STB6000 DVBS Silicon tuner
+
+ Copyright (C) 2008 Igor M. Liplianin (liplianin@me.by)
+
+ 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/slab.h>
+#include <linux/module.h>
+#include <linux/dvb/frontend.h>
+#include <asm/types.h>
+
+#include "stb6000.h"
+
+static int debug;
+#define dprintk(args...) \
+ do { \
+ if (debug) \
+ printk(KERN_DEBUG "stb6000: " args); \
+ } while (0)
+
+struct stb6000_priv {
+ /* i2c details */
+ int i2c_address;
+ struct i2c_adapter *i2c;
+ u32 frequency;
+};
+
+static int stb6000_release(struct dvb_frontend *fe)
+{
+ kfree(fe->tuner_priv);
+ fe->tuner_priv = NULL;
+ return 0;
+}
+
+static int stb6000_sleep(struct dvb_frontend *fe)
+{
+ struct stb6000_priv *priv = fe->tuner_priv;
+ int ret;
+ u8 buf[] = { 10, 0 };
+ struct i2c_msg msg = {
+ .addr = priv->i2c_address,
+ .flags = 0,
+ .buf = buf,
+ .len = 2
+ };
+
+ dprintk("%s:\n", __func__);
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1);
+
+ ret = i2c_transfer(priv->i2c, &msg, 1);
+ if (ret != 1)
+ dprintk("%s: i2c error\n", __func__);
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 0);
+
+ return (ret == 1) ? 0 : ret;
+}
+
+static int stb6000_set_params(struct dvb_frontend *fe)
+{
+ struct dtv_frontend_properties *p = &fe->dtv_property_cache;
+ struct stb6000_priv *priv = fe->tuner_priv;
+ unsigned int n, m;
+ int ret;
+ u32 freq_mhz;
+ int bandwidth;
+ u8 buf[12];
+ struct i2c_msg msg = {
+ .addr = priv->i2c_address,
+ .flags = 0,
+ .buf = buf,
+ .len = 12
+ };
+
+ dprintk("%s:\n", __func__);
+
+ freq_mhz = p->frequency / 1000;
+ bandwidth = p->symbol_rate / 1000000;
+
+ if (bandwidth > 31)
+ bandwidth = 31;
+
+ if ((freq_mhz > 949) && (freq_mhz < 2151)) {
+ buf[0] = 0x01;
+ buf[1] = 0xac;
+ if (freq_mhz < 1950)
+ buf[1] = 0xaa;
+ if (freq_mhz < 1800)
+ buf[1] = 0xa8;
+ if (freq_mhz < 1650)
+ buf[1] = 0xa6;
+ if (freq_mhz < 1530)
+ buf[1] = 0xa5;
+ if (freq_mhz < 1470)
+ buf[1] = 0xa4;
+ if (freq_mhz < 1370)
+ buf[1] = 0xa2;
+ if (freq_mhz < 1300)
+ buf[1] = 0xa1;
+ if (freq_mhz < 1200)
+ buf[1] = 0xa0;
+ if (freq_mhz < 1075)
+ buf[1] = 0xbc;
+ if (freq_mhz < 1000)
+ buf[1] = 0xba;
+ if (freq_mhz < 1075) {
+ n = freq_mhz / 8; /* vco=lo*4 */
+ m = 2;
+ } else {
+ n = freq_mhz / 16; /* vco=lo*2 */
+ m = 1;
+ }
+ buf[2] = n >> 1;
+ buf[3] = (unsigned char)(((n & 1) << 7) |
+ (m * freq_mhz - n * 16) | 0x60);
+ buf[4] = 0x04;
+ buf[5] = 0x0e;
+
+ buf[6] = (unsigned char)(bandwidth);
+
+ buf[7] = 0xd8;
+ buf[8] = 0xd0;
+ buf[9] = 0x50;
+ buf[10] = 0xeb;
+ buf[11] = 0x4f;
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1);
+
+ ret = i2c_transfer(priv->i2c, &msg, 1);
+ if (ret != 1)
+ dprintk("%s: i2c error\n", __func__);
+
+ udelay(10);
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 0);
+
+ buf[0] = 0x07;
+ buf[1] = 0xdf;
+ buf[2] = 0xd0;
+ buf[3] = 0x50;
+ buf[4] = 0xfb;
+ msg.len = 5;
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1);
+
+ ret = i2c_transfer(priv->i2c, &msg, 1);
+ if (ret != 1)
+ dprintk("%s: i2c error\n", __func__);
+
+ udelay(10);
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 0);
+
+ priv->frequency = freq_mhz * 1000;
+
+ return (ret == 1) ? 0 : ret;
+ }
+ return -1;
+}
+
+static int stb6000_get_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+ struct stb6000_priv *priv = fe->tuner_priv;
+ *frequency = priv->frequency;
+ return 0;
+}
+
+static struct dvb_tuner_ops stb6000_tuner_ops = {
+ .info = {
+ .name = "ST STB6000",
+ .frequency_min = 950000,
+ .frequency_max = 2150000
+ },
+ .release = stb6000_release,
+ .sleep = stb6000_sleep,
+ .set_params = stb6000_set_params,
+ .get_frequency = stb6000_get_frequency,
+};
+
+struct dvb_frontend *stb6000_attach(struct dvb_frontend *fe, int addr,
+ struct i2c_adapter *i2c)
+{
+ struct stb6000_priv *priv = NULL;
+ u8 b0[] = { 0 };
+ u8 b1[] = { 0, 0 };
+ struct i2c_msg msg[2] = {
+ {
+ .addr = addr,
+ .flags = 0,
+ .buf = b0,
+ .len = 0
+ }, {
+ .addr = addr,
+ .flags = I2C_M_RD,
+ .buf = b1,
+ .len = 2
+ }
+ };
+ int ret;
+
+ dprintk("%s:\n", __func__);
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1);
+
+ /* is some i2c device here ? */
+ ret = i2c_transfer(i2c, msg, 2);
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 0);
+
+ if (ret != 2)
+ return NULL;
+
+ priv = kzalloc(sizeof(struct stb6000_priv), GFP_KERNEL);
+ if (priv == NULL)
+ return NULL;
+
+ priv->i2c_address = addr;
+ priv->i2c = i2c;
+
+ memcpy(&fe->ops.tuner_ops, &stb6000_tuner_ops,
+ sizeof(struct dvb_tuner_ops));
+
+ fe->tuner_priv = priv;
+
+ return fe;
+}
+EXPORT_SYMBOL(stb6000_attach);
+
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
+
+MODULE_DESCRIPTION("DVB STB6000 driver");
+MODULE_AUTHOR("Igor M. Liplianin <liplianin@me.by>");
+MODULE_LICENSE("GPL");
Code Review / kvmfornfv.git / blobdiff