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Diffstat (limited to 'drivers/media/dvb/frontends/stv6110x.c')
-rw-r--r--drivers/media/dvb/frontends/stv6110x.c372
1 files changed, 372 insertions, 0 deletions
diff --git a/drivers/media/dvb/frontends/stv6110x.c b/drivers/media/dvb/frontends/stv6110x.c
new file mode 100644
index 000000000000..738618133b16
--- /dev/null
+++ b/drivers/media/dvb/frontends/stv6110x.c
@@ -0,0 +1,372 @@
+/*
+ STV6110(A) Silicon tuner driver
+
+ Copyright (C) Manu Abraham <abraham.manu@gmail.com>
+
+ Copyright (C) ST Microelectronics
+
+ 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/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/string.h>
+
+#include "dvb_frontend.h"
+
+#include "stv6110x_reg.h"
+#include "stv6110x.h"
+#include "stv6110x_priv.h"
+
+static unsigned int verbose;
+module_param(verbose, int, 0644);
+MODULE_PARM_DESC(verbose, "Set Verbosity level");
+
+static u8 stv6110x_regs[] = {0x07, 0x11, 0xdc, 0x85, 0x17, 0x01, 0xe6, 0x1e};
+
+static int stv6110x_read_reg(struct stv6110x_state *stv6110x, u8 reg, u8 *data)
+{
+ int ret;
+ const struct stv6110x_config *config = stv6110x->config;
+ u8 b0[] = { reg };
+ u8 b1[] = { 0 };
+ struct i2c_msg msg[] = {
+ { .addr = config->addr, .flags = 0, .buf = b0, .len = 1 },
+ { .addr = config->addr, .flags = I2C_M_RD, .buf = b1, .len = 1 }
+ };
+
+ ret = i2c_transfer(stv6110x->i2c, msg, 2);
+ if (ret != 2) {
+ dprintk(FE_ERROR, 1, "I/O Error");
+ return -EREMOTEIO;
+ }
+
+ return 0;
+}
+
+static int stv6110x_write_reg(struct stv6110x_state *stv6110x, u8 reg, u8 data)
+{
+ int ret;
+ const struct stv6110x_config *config = stv6110x->config;
+ u8 buf[] = { reg, data };
+ struct i2c_msg msg = { .addr = config->addr, .flags = 0, . buf = buf, .len = 2 };
+
+ ret = i2c_transfer(stv6110x->i2c, &msg, 1);
+ if (ret != 1) {
+ dprintk(FE_ERROR, 1, "I/O Error");
+ return -EREMOTEIO;
+ }
+
+ return 0;
+}
+
+static int stv6110x_init(struct dvb_frontend *fe)
+{
+ struct stv6110x_state *stv6110x = fe->tuner_priv;
+ int ret;
+ u8 i;
+
+ for (i = 0; i < ARRAY_SIZE(stv6110x_regs); i++) {
+ ret = stv6110x_write_reg(stv6110x, i, stv6110x_regs[i]);
+ if (ret < 0) {
+ dprintk(FE_ERROR, 1, "Initialization failed");
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+static int stv6110x_set_frequency(struct dvb_frontend *fe, u32 frequency)
+{
+ struct stv6110x_state *stv6110x = fe->tuner_priv;
+ u32 rDiv, divider;
+ s32 pVal, pCalc, rDivOpt = 0;
+ u8 i;
+
+ STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL1], CTRL1_K, (REFCLOCK_MHz - 16));
+
+ if (frequency <= 1023000) {
+ STV6110x_SETFIELD(stv6110x_regs[STV6110x_TNG1], TNG1_DIV4SEL, 1);
+ STV6110x_SETFIELD(stv6110x_regs[STV6110x_TNG1], TNG1_PRESC32_ON, 0);
+ pVal = 40;
+ } else if (frequency <= 1300000) {
+ STV6110x_SETFIELD(stv6110x_regs[STV6110x_TNG1], TNG1_DIV4SEL, 1);
+ STV6110x_SETFIELD(stv6110x_regs[STV6110x_TNG1], TNG1_PRESC32_ON, 1);
+ pVal = 40;
+ } else if (frequency <= 2046000) {
+ STV6110x_SETFIELD(stv6110x_regs[STV6110x_TNG1], TNG1_DIV4SEL, 0);
+ STV6110x_SETFIELD(stv6110x_regs[STV6110x_TNG1], TNG1_PRESC32_ON, 0);
+ pVal = 20;
+ } else {
+ STV6110x_SETFIELD(stv6110x_regs[STV6110x_TNG1], TNG1_DIV4SEL, 0);
+ STV6110x_SETFIELD(stv6110x_regs[STV6110x_TNG1], TNG1_PRESC32_ON, 1);
+ pVal = 20;
+ }
+
+ for (rDiv = 0; rDiv <= 3; rDiv++) {
+ pCalc = (REFCLOCK_kHz / 100) / R_DIV(rDiv);
+
+ if ((abs((s32)(pCalc - pVal))) < (abs((s32)(1000 - pVal))))
+ rDivOpt = rDiv;
+ }
+
+ divider = (frequency * R_DIV(rDivOpt) * pVal) / REFCLOCK_kHz;
+ divider = (divider + 5) / 10;
+
+ STV6110x_SETFIELD(stv6110x_regs[STV6110x_TNG1], TNG1_R_DIV, rDivOpt);
+ STV6110x_SETFIELD(stv6110x_regs[STV6110x_TNG1], TNG1_N_DIV_11_8, MSB(divider));
+ STV6110x_SETFIELD(stv6110x_regs[STV6110x_TNG0], TNG0_N_DIV_7_0, LSB(divider));
+
+ /* VCO Auto calibration */
+ STV6110x_SETFIELD(stv6110x_regs[STV6110x_STAT1], STAT1_CALVCO_STRT, 1);
+
+ stv6110x_write_reg(stv6110x, STV6110x_CTRL1, stv6110x_regs[STV6110x_CTRL1]);
+ stv6110x_write_reg(stv6110x, STV6110x_TNG1, stv6110x_regs[STV6110x_TNG1]);
+ stv6110x_write_reg(stv6110x, STV6110x_TNG0, stv6110x_regs[STV6110x_TNG0]);
+ stv6110x_write_reg(stv6110x, STV6110x_STAT1, stv6110x_regs[STV6110x_STAT1]);
+
+ for (i = 0; i < TRIALS; i++) {
+ stv6110x_read_reg(stv6110x, STV6110x_STAT1, &stv6110x_regs[STV6110x_STAT1]);
+ if (!STV6110x_GETFIELD(STAT1_CALVCO_STRT, stv6110x_regs[STV6110x_STAT1]))
+ break;
+ msleep(1);
+ }
+
+ return 0;
+}
+
+static int stv6110x_get_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+ struct stv6110x_state *stv6110x = fe->tuner_priv;
+
+ stv6110x_read_reg(stv6110x, STV6110x_TNG1, &stv6110x_regs[STV6110x_TNG1]);
+ stv6110x_read_reg(stv6110x, STV6110x_TNG0, &stv6110x_regs[STV6110x_TNG0]);
+
+ *frequency = (MAKEWORD16(STV6110x_GETFIELD(TNG1_N_DIV_11_8, stv6110x_regs[STV6110x_TNG1]),
+ STV6110x_GETFIELD(TNG0_N_DIV_7_0, stv6110x_regs[STV6110x_TNG0]))) * REFCLOCK_kHz;
+
+ *frequency /= (1 << (STV6110x_GETFIELD(TNG1_R_DIV, stv6110x_regs[STV6110x_TNG1]) +
+ STV6110x_GETFIELD(TNG1_DIV4SEL, stv6110x_regs[STV6110x_TNG1])));
+
+ *frequency >>= 2;
+
+ return 0;
+}
+
+static int stv6110x_set_bandwidth(struct dvb_frontend *fe, u32 bandwidth)
+{
+ struct stv6110x_state *stv6110x = fe->tuner_priv;
+ u32 halfbw;
+ u8 i;
+
+ halfbw = bandwidth >> 1;
+
+ if (halfbw > 36000000)
+ STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL3], CTRL3_CF, 31); /* LPF */
+ else if (halfbw < 5000000)
+ STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL3], CTRL3_CF, 0); /* LPF */
+ else
+ STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL3], CTRL3_CF, ((halfbw / 1000000) - 5)); /* LPF */
+
+
+ STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL3], CTRL3_RCCLK_OFF, 0x0); /* cal. clk activated */
+ STV6110x_SETFIELD(stv6110x_regs[STV6110x_STAT1], STAT1_CALRC_STRT, 0x1); /* LPF auto cal */
+
+ stv6110x_write_reg(stv6110x, STV6110x_CTRL3, stv6110x_regs[STV6110x_CTRL3]);
+ stv6110x_write_reg(stv6110x, STV6110x_STAT1, stv6110x_regs[STV6110x_STAT1]);
+
+ for (i = 0; i < TRIALS; i++) {
+ stv6110x_read_reg(stv6110x, STV6110x_STAT1, &stv6110x_regs[STV6110x_STAT1]);
+ if (!STV6110x_GETFIELD(STAT1_CALRC_STRT, stv6110x_regs[STV6110x_STAT1]))
+ break;
+ msleep(1);
+ }
+ STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL3], CTRL3_RCCLK_OFF, 0x1); /* cal. done */
+ stv6110x_write_reg(stv6110x, STV6110x_CTRL3, stv6110x_regs[STV6110x_CTRL3]);
+
+ return 0;
+}
+
+static int stv6110x_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
+{
+ struct stv6110x_state *stv6110x = fe->tuner_priv;
+
+ stv6110x_read_reg(stv6110x, STV6110x_CTRL3, &stv6110x_regs[STV6110x_CTRL3]);
+ *bandwidth = (STV6110x_GETFIELD(CTRL3_CF, stv6110x_regs[STV6110x_CTRL3]) + 5) * 2000000;
+
+ return 0;
+}
+
+static int stv6110x_set_refclock(struct dvb_frontend *fe, u32 refclock)
+{
+ struct stv6110x_state *stv6110x = fe->tuner_priv;
+
+ /* setup divider */
+ switch (refclock) {
+ default:
+ case 1:
+ STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL2], CTRL2_CO_DIV, 0);
+ break;
+ case 2:
+ STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL2], CTRL2_CO_DIV, 1);
+ break;
+ case 4:
+ STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL2], CTRL2_CO_DIV, 2);
+ break;
+ case 8:
+ case 0:
+ STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL2], CTRL2_CO_DIV, 3);
+ break;
+ }
+ stv6110x_write_reg(stv6110x, STV6110x_CTRL2, stv6110x_regs[STV6110x_CTRL2]);
+
+ return 0;
+}
+
+static int stv6110x_get_bbgain(struct dvb_frontend *fe, u32 *gain)
+{
+ struct stv6110x_state *stv6110x = fe->tuner_priv;
+
+ stv6110x_read_reg(stv6110x, STV6110x_CTRL2, &stv6110x_regs[STV6110x_CTRL2]);
+ *gain = 2 * STV6110x_GETFIELD(CTRL2_BBGAIN, stv6110x_regs[STV6110x_CTRL2]);
+
+ return 0;
+}
+
+static int stv6110x_set_bbgain(struct dvb_frontend *fe, u32 gain)
+{
+ struct stv6110x_state *stv6110x = fe->tuner_priv;
+
+ STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL2], CTRL2_BBGAIN, gain / 2);
+ stv6110x_write_reg(stv6110x, STV6110x_CTRL2, stv6110x_regs[STV6110x_CTRL2]);
+
+ return 0;
+}
+
+static int stv6110x_set_mode(struct dvb_frontend *fe, enum tuner_mode mode)
+{
+ struct stv6110x_state *stv6110x = fe->tuner_priv;
+ int ret;
+
+ switch (mode) {
+ case TUNER_SLEEP:
+ STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL1], CTRL1_SYN, 0);
+ STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL1], CTRL1_RX, 0);
+ STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL1], CTRL1_LPT, 0);
+ break;
+
+ case TUNER_WAKE:
+ STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL1], CTRL1_SYN, 1);
+ STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL1], CTRL1_RX, 1);
+ STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL1], CTRL1_LPT, 1);
+ break;
+ }
+
+ ret = stv6110x_write_reg(stv6110x, STV6110x_CTRL1, stv6110x_regs[STV6110x_CTRL1]);
+ if (ret < 0) {
+ dprintk(FE_ERROR, 1, "I/O Error");
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int stv6110x_sleep(struct dvb_frontend *fe)
+{
+ return stv6110x_set_mode(fe, TUNER_SLEEP);
+}
+
+static int stv6110x_get_status(struct dvb_frontend *fe, u32 *status)
+{
+ struct stv6110x_state *stv6110x = fe->tuner_priv;
+
+ stv6110x_read_reg(stv6110x, STV6110x_STAT1, &stv6110x_regs[STV6110x_STAT1]);
+
+ if (STV6110x_GETFIELD(STAT1_LOCK, stv6110x_regs[STV6110x_STAT1]))
+ *status = TUNER_PHASELOCKED;
+ else
+ *status = 0;
+
+ return 0;
+}
+
+
+static int stv6110x_release(struct dvb_frontend *fe)
+{
+ struct stv6110x_state *stv6110x = fe->tuner_priv;
+
+ fe->tuner_priv = NULL;
+ kfree(stv6110x);
+
+ return 0;
+}
+
+static struct dvb_tuner_ops stv6110x_ops = {
+ .info = {
+ .name = "STV6110(A) Silicon Tuner",
+ .frequency_min = 950000,
+ .frequency_max = 2150000,
+ .frequency_step = 0,
+ },
+
+ .init = stv6110x_init,
+ .sleep = stv6110x_sleep,
+ .release = stv6110x_release
+};
+
+static struct stv6110x_devctl stv6110x_ctl = {
+ .tuner_init = stv6110x_init,
+ .tuner_set_mode = stv6110x_set_mode,
+ .tuner_set_frequency = stv6110x_set_frequency,
+ .tuner_get_frequency = stv6110x_get_frequency,
+ .tuner_set_bandwidth = stv6110x_set_bandwidth,
+ .tuner_get_bandwidth = stv6110x_get_bandwidth,
+ .tuner_set_bbgain = stv6110x_set_bbgain,
+ .tuner_get_bbgain = stv6110x_get_bbgain,
+ .tuner_set_refclk = stv6110x_set_refclock,
+ .tuner_get_status = stv6110x_get_status,
+};
+
+struct stv6110x_devctl *stv6110x_attach(struct dvb_frontend *fe,
+ const struct stv6110x_config *config,
+ struct i2c_adapter *i2c)
+{
+ struct stv6110x_state *stv6110x;
+
+ stv6110x = kzalloc(sizeof (struct stv6110x_state), GFP_KERNEL);
+ if (stv6110x == NULL)
+ goto error;
+
+ stv6110x->i2c = i2c;
+ stv6110x->config = config;
+ stv6110x->devctl = &stv6110x_ctl;
+
+ fe->tuner_priv = stv6110x;
+ fe->ops.tuner_ops = stv6110x_ops;
+
+ printk("%s: Attaching STV6110x \n", __func__);
+ return stv6110x->devctl;
+
+error:
+ kfree(stv6110x);
+ return NULL;
+}
+EXPORT_SYMBOL(stv6110x_attach);
+
+MODULE_AUTHOR("Manu Abraham");
+MODULE_DESCRIPTION("STV6110x Silicon tuner");
+MODULE_LICENSE("GPL");
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