--- /dev/null
+/**
+ * Driver for Sharp IX2505V (marked B0017) DVB-S silicon tuner
+ *
+ * Copyright (C) 2010 Malcolm Priestley
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License Version 2, as
+ * published by the Free Software Foundation.
+ *
+ * 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/module.h>
+#include <linux/dvb/frontend.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+#include "ix2505v.h"
+
+static int ix2505v_debug;
+#define dprintk(level, args...) \
+ do { if (ix2505v_debug & level) printk(KERN_DEBUG "ix2505v: " args); \
+ } while (0)
+
+#define deb_info(args...) dprintk(0x01, args)
+#define deb_i2c(args...) dprintk(0x02, args)
+
+struct ix2505v_state {
+ struct i2c_adapter *i2c;
+ const struct ix2505v_config *config;
+ u32 frequency;
+};
+
+/**
+ * Data read format of the Sharp IX2505V B0017
+ *
+ * byte1: 1 | 1 | 0 | 0 | 0 | MA1 | MA0 | 1
+ * byte2: POR | FL | RD2 | RD1 | RD0 | X | X | X
+ *
+ * byte1 = address
+ * byte2;
+ * POR = Power on Reset (VCC H=<2.2v L=>2.2v)
+ * FL = Phase Lock (H=lock L=unlock)
+ * RD0-2 = Reserved internal operations
+ *
+ * Only POR can be used to check the tuner is present
+ *
+ * Caution: after byte2 the I2C reverts to write mode continuing to read
+ * may corrupt tuning data.
+ *
+ */
+
+static int ix2505v_read_status_reg(struct ix2505v_state *state)
+{
+ u8 addr = state->config->tuner_address;
+ u8 b2[] = {0};
+ int ret;
+
+ struct i2c_msg msg[1] = {
+ { .addr = addr, .flags = I2C_M_RD, .buf = b2, .len = 1 }
+ };
+
+ ret = i2c_transfer(state->i2c, msg, 1);
+ deb_i2c("Read %s ", __func__);
+
+ return (ret = 1) ? (int) b2[0] : -1;
+}
+
+static int ix2505v_write(struct ix2505v_state *state, u8 buf[], u8 count)
+{
+ struct i2c_msg msg[1] = {
+ { .addr = state->config->tuner_address, .flags = 0,
+ .buf = buf, .len = count },
+ };
+
+ int ret;
+
+ ret = i2c_transfer(state->i2c, msg, 1);
+
+ if (ret != 1) {
+ deb_i2c("%s: i2c error, ret=%d\n", __func__, ret);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int ix2505v_release(struct dvb_frontend *fe)
+{
+ struct ix2505v_state *state = fe->tuner_priv;
+
+ fe->tuner_priv = NULL;
+ kfree(state);
+
+ return 0;
+}
+
+/**
+ * Data write format of the Sharp IX2505V B0017
+ *
+ * byte1: 1 | 1 | 0 | 0 | 0 | 0(MA1)| 0(MA0)| 0
+ * byte2: 0 | BG1 | BG2 | N8 | N7 | N6 | N5 | N4
+ * byte3: N3 | N2 | N1 | A5 | A4 | A3 | A2 | A1
+ * byte4: 1 | 1(C1) | 1(C0) | PD5 | PD4 | TM | 0(RTS)| 1(REF)
+ * byte5: BA2 | BA1 | BA0 | PSC | PD3 |PD2/TS2|DIV/TS1|PD0/TS0
+ *
+ * byte1 = address
+ *
+ * Write order
+ * 1) byte1 -> byte2 -> byte3 -> byte4 -> byte5
+ * 2) byte1 -> byte4 -> byte5 -> byte2 -> byte3
+ * 3) byte1 -> byte2 -> byte3 -> byte4
+ * 4) byte1 -> byte4 -> byte5 -> byte2
+ * 5) byte1 -> byte2 -> byte3
+ * 6) byte1 -> byte4 -> byte5
+ * 7) byte1 -> byte2
+ * 8) byte1 -> byte4
+ *
+ * Recommended Setup
+ * 1 -> 8 -> 6
+ */
+
+static int ix2505v_set_params(struct dvb_frontend *fe,
+ struct dvb_frontend_parameters *params)
+{
+ struct ix2505v_state *state = fe->tuner_priv;
+ u32 frequency = params->frequency;
+ u32 b_w = (params->u.qpsk.symbol_rate * 27) / 32000;
+ u32 div_factor, N , A, x;
+ int ret = 0, len;
+ u8 gain, cc, ref, psc, local_osc, lpf;
+ u8 data[4] = {0};
+
+ if ((frequency < fe->ops.info.frequency_min)
+ || (frequency > fe->ops.info.frequency_max))
+ return -EINVAL;
+
+ if (state->config->tuner_gain)
+ gain = (state->config->tuner_gain < 4)
+ ? state->config->tuner_gain : 0;
+ else
+ gain = 0x0;
+
+ if (state->config->tuner_chargepump)
+ cc = state->config->tuner_chargepump;
+ else
+ cc = 0x3;
+
+ ref = 8; /* REF =1 */
+ psc = 32; /* PSC = 0 */
+
+ div_factor = (frequency * ref) / 40; /* local osc = 4Mhz */
+ x = div_factor / psc;
+ N = x/100;
+ A = ((x - (N * 100)) * psc) / 100;
+
+ data[0] = ((gain & 0x3) << 5) | (N >> 3);
+ data[1] = (N << 5) | (A & 0x1f);
+ data[2] = 0x81 | ((cc & 0x3) << 5) ; /*PD5,PD4 & TM = 0|C1,C0|REF=1*/
+
+ deb_info("Frq=%d x=%d N=%d A=%d \n", frequency, x, N, A);
+
+ if (frequency <= 1065000)
+ local_osc = (6 << 5) | 2;
+ else if (frequency <= 1170000)
+ local_osc = (7 << 5) | 2;
+ else if (frequency <= 1300000)
+ local_osc = (1 << 5);
+ else if (frequency <= 1445000)
+ local_osc = (2 << 5);
+ else if (frequency <= 1607000)
+ local_osc = (3 << 5);
+ else if (frequency <= 1778000)
+ local_osc = (4 << 5);
+ else if (frequency <= 1942000)
+ local_osc = (5 << 5);
+ else /*frequency up to 2150000*/
+ local_osc = (6 << 5);
+
+ data[3] = local_osc; /* all other bits set 0 */
+
+
+ if (b_w <= 10000)
+ lpf = 0xc;
+ else if (b_w <= 12000)
+ lpf = 0x2;
+ else if (b_w <= 14000)
+ lpf = 0xa;
+ else if (b_w <= 16000)
+ lpf = 0x6;
+ else if (b_w <= 18000)
+ lpf = 0xe;
+ else if (b_w <= 20000)
+ lpf = 0x1;
+ else if (b_w <= 22000)
+ lpf = 0x9;
+ else if (b_w <= 24000)
+ lpf = 0x5;
+ else if (b_w <= 26000)
+ lpf = 0xd;
+ else if (b_w <= 28000)
+ lpf = 0x3;
+ else
+ lpf = 0xb;
+
+ deb_info("Osc=%x b_w=%x lpf=%x\n", local_osc, b_w, lpf);
+ deb_info("Data 0=[%x%x%x%x] \n", data[0], data[1], data[2], data[3]);
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1);
+
+ len = sizeof(data);
+
+ ret |= ix2505v_write(state, data, len);
+
+ data[2] |= 0x4; /* set TM = 1 other bits same */
+
+ len = 1;
+ ret |= ix2505v_write(state, &data[2], len); /* write byte 4 only */
+
+
+ msleep(10);
+
+ data[2] |= ((lpf >> 2) & 0x3) << 3; /* lpf */
+ data[3] |= (lpf & 0x3) << 2;
+
+ deb_info("Data 2=[%x%x] \n", data[2], data[3]);
+
+ len = 2;
+ ret |= ix2505v_write(state, &data[2], len); /* write byte 4 & 5 */
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 0);
+
+ if (state->config->min_delay_ms)
+ msleep(state->config->min_delay_ms);
+
+ state->frequency = frequency;
+
+ return ret;
+}
+
+static int ix2505v_get_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+ struct ix2505v_state *state = fe->tuner_priv;
+
+ *frequency = state->frequency;
+
+ return 0;
+}
+
+static struct dvb_tuner_ops ix2505v_tuner_ops = {
+ .info = {
+ .name = "Sharp IX2505V (B0017)",
+ .frequency_min = 950000,
+ .frequency_max = 2175000
+ },
+ .release = ix2505v_release,
+ .set_params = ix2505v_set_params,
+ .get_frequency = ix2505v_get_frequency,
+};
+
+struct dvb_frontend *ix2505v_attach(struct dvb_frontend *fe,
+ const struct ix2505v_config *config,
+ struct i2c_adapter *i2c)
+{
+ struct ix2505v_state *state = NULL;
+ int ret;
+
+ if (NULL == config) {
+ deb_i2c("%s: no config ", __func__);
+ goto error;
+ }
+
+ state = kzalloc(sizeof(struct ix2505v_state), GFP_KERNEL);
+ if (NULL == state)
+ return NULL;
+
+ state->config = config;
+ state->i2c = i2c;
+
+ if (state->config->tuner_write_only) {
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1);
+
+ ret = ix2505v_read_status_reg(state);
+
+ if (ret & 0x80) {
+ deb_i2c("%s: No IX2505V found\n", __func__);
+ goto error;
+ }
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 0);
+ }
+
+ fe->tuner_priv = state;
+
+ memcpy(&fe->ops.tuner_ops, &ix2505v_tuner_ops,
+ sizeof(struct dvb_tuner_ops));
+ deb_i2c("%s: initialization (%s addr=0x%02x) ok\n",
+ __func__, fe->ops.tuner_ops.info.name, config->tuner_address);
+
+ return fe;
+
+error:
+ ix2505v_release(fe);
+ return NULL;
+}
+EXPORT_SYMBOL(ix2505v_attach);
+
+module_param_named(debug, ix2505v_debug, int, 0644);
+MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
+MODULE_DESCRIPTION("DVB IX2505V tuner driver");
+MODULE_AUTHOR("Malcolm Priestley");
+MODULE_LICENSE("GPL");
--- /dev/null
+/**
+ * Driver for Sharp IX2505V (marked B0017) DVB-S silicon tuner
+ *
+ * Copyright (C) 2010 Malcolm Priestley
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License Version 2, as
+ * published by the Free Software Foundation.
+ *
+ * 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.
+ */
+
+#ifndef DVB_IX2505V_H
+#define DVB_IX2505V_H
+
+#include <linux/i2c.h>
+#include "dvb_frontend.h"
+
+/**
+ * Attach a ix2505v tuner to the supplied frontend structure.
+ *
+ * @param fe Frontend to attach to.
+ * @param config ix2505v_config structure
+ * @return FE pointer on success, NULL on failure.
+ */
+
+struct ix2505v_config {
+ u8 tuner_address;
+
+ /*Baseband AMP gain control 0/1=0dB(default) 2=-2bB 3=-4dB */
+ u8 tuner_gain;
+
+ /*Charge pump output +/- 0=120 1=260 2=555 3=1200(default) */
+ u8 tuner_chargepump;
+
+ /* delay after tune */
+ int min_delay_ms;
+
+ /* disables reads*/
+ u8 tuner_write_only;
+
+};
+
+#if defined(CONFIG_DVB_IX2505V) || \
+ (defined(CONFIG_DVB_IX2505V_MODULE) && defined(MODULE))
+extern struct dvb_frontend *ix2505v_attach(struct dvb_frontend *fe,
+ const struct ix2505v_config *config, struct i2c_adapter *i2c);
+#else
+static inline struct dvb_frontend *ix2505v_attach(struct dvb_frontend *fe,
+ const struct ix2505v_config *config, struct i2c_adapter *i2c)
+{
+ printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
+ return NULL;
+}
+#endif
+
+#endif /* DVB_IX2505V_H */
git.openpandora.org / pandora-kernel.git / commitdiff