Em Wed, 15 Apr 2015 13:07:47 +0300
se...@netup.ru escreveu:
> From: Kozlov Sergey <se...@netup.ru>
>
> Add DVB-T/T2/C frontend driver for Sony Ascot2e (CXD2861ER) chip.
>
> Changes in version 2:
> - rename MAINTAINERS entry
> - fix coding style
> - use dynamic debug instead of module-specifig debug parameter
> - fix I2C bus error handling
>
> Signed-off-by: Kozlov Sergey <se...@netup.ru>
> ---
> MAINTAINERS | 9 +
> drivers/media/dvb-frontends/Kconfig | 7 +
> drivers/media/dvb-frontends/Makefile | 1 +
> drivers/media/dvb-frontends/ascot2e.c | 543
> +++++++++++++++++++++++++++++++++
> drivers/media/dvb-frontends/ascot2e.h | 58 ++++
> 5 files changed, 618 insertions(+)
> create mode 100644 drivers/media/dvb-frontends/ascot2e.c
> create mode 100644 drivers/media/dvb-frontends/ascot2e.h
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 7ba61b2..9950fbe 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -6269,6 +6269,15 @@ W: http://linuxtv.org
> S: Maintained
> F: drivers/media/radio/radio-maxiradio*
>
> +MEDIA DRIVERS FOR ASCOT2E
> +M: Sergey Kozlov <se...@netup.ru>
> +L: linux-media@vger.kernel.org
> +W: http://linuxtv.org
> +W: http://netup.tv/
> +T: git git://linuxtv.org/media_tree.git
> +S: Supported
> +F: drivers/media/dvb-frontends/ascot2e*
> +
> MEDIA DRIVERS FOR HORUS3A
> M: Sergey Kozlov <se...@netup.ru>
> L: linux-media@vger.kernel.org
> diff --git a/drivers/media/dvb-frontends/Kconfig
> b/drivers/media/dvb-frontends/Kconfig
> index bd5ab69..d178aca 100644
> --- a/drivers/media/dvb-frontends/Kconfig
> +++ b/drivers/media/dvb-frontends/Kconfig
> @@ -805,6 +805,13 @@ config DVB_HORUS3A
> help
> Say Y when you want to support this frontend.
>
> +config DVB_ASCOT2E
> + tristate "Sony Ascot2E tuner"
> + depends on DVB_CORE && I2C
> + default m if !MEDIA_SUBDRV_AUTOSELECT
> + help
> + Say Y when you want to support this frontend.
> +
> comment "Tools to develop new frontends"
>
> config DVB_DUMMY_FE
> diff --git a/drivers/media/dvb-frontends/Makefile
> b/drivers/media/dvb-frontends/Makefile
> index 3aa05f3..0b19c10 100644
> --- a/drivers/media/dvb-frontends/Makefile
> +++ b/drivers/media/dvb-frontends/Makefile
> @@ -117,3 +117,4 @@ obj-$(CONFIG_DVB_AF9033) += af9033.o
> obj-$(CONFIG_DVB_AS102_FE) += as102_fe.o
> obj-$(CONFIG_DVB_TC90522) += tc90522.o
> obj-$(CONFIG_DVB_HORUS3A) += horus3a.o
> +obj-$(CONFIG_DVB_ASCOT2E) += ascot2e.o
> diff --git a/drivers/media/dvb-frontends/ascot2e.c
> b/drivers/media/dvb-frontends/ascot2e.c
> new file mode 100644
> index 0000000..a87cfee
> --- /dev/null
> +++ b/drivers/media/dvb-frontends/ascot2e.c
> @@ -0,0 +1,543 @@
> +/*
> + * ascot2e.c
> + *
> + * Sony Ascot3E DVB-T/T2/C/C2 tuner driver
> + *
> + * Copyright 2012 Sony Corporation
> + * Copyright (C) 2014 NetUP Inc.
> + * Copyright (C) 2014 Sergey Kozlov <se...@netup.ru>
> + * Copyright (C) 2014 Abylay Ospan <aos...@netup.ru>
> + *
> + * 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.
> + */
> +
> +#include <linux/slab.h>
> +#include <linux/module.h>
> +#include <linux/dvb/frontend.h>
> +#include <linux/types.h>
> +#include "ascot2e.h"
> +#include "dvb_frontend.h"
> +
> +enum ascot2e_state {
> + STATE_UNKNOWN,
> + STATE_SLEEP,
> + STATE_ACTIVE
> +};
> +
> +struct ascot2e_priv {
> + u32 frequency;
> + u8 i2c_address;
> + struct i2c_adapter *i2c;
> + enum ascot2e_state state;
> + void *set_tuner_data;
> + int (*set_tuner)(void *, int);
> +};
> +
> +enum ascot2e_tv_system_t {
> + ASCOT2E_DTV_DVBT_5,
> + ASCOT2E_DTV_DVBT_6,
> + ASCOT2E_DTV_DVBT_7,
> + ASCOT2E_DTV_DVBT_8,
> + ASCOT2E_DTV_DVBT2_1_7,
> + ASCOT2E_DTV_DVBT2_5,
> + ASCOT2E_DTV_DVBT2_6,
> + ASCOT2E_DTV_DVBT2_7,
> + ASCOT2E_DTV_DVBT2_8,
> + ASCOT2E_DTV_DVBC_6,
> + ASCOT2E_DTV_DVBC_8,
> + ASCOT2E_DTV_DVBC2_6,
> + ASCOT2E_DTV_DVBC2_8,
> + ASCOT2E_DTV_UNKNOWN
> +};
> +
> +struct ascot2e_band_sett {
> + u8 if_out_sel;
> + u8 agc_sel;
> + u8 mix_oll;
> + u8 rf_gain;
> + u8 if_bpf_gc;
> + u8 fif_offset;
> + u8 bw_offset;
> + u8 bw;
> + u8 rf_oldet;
> + u8 if_bpf_f0;
> +};
> +
> +#define ASCOT2E_AUTO 0xff
> +#define ASCOT2E_OFFSET(ofs) ((u8)(ofs) & 0x1F)
> +#define ASCOT2E_BW_6 0x00
> +#define ASCOT2E_BW_7 0x01
> +#define ASCOT2E_BW_8 0x02
> +#define ASCOT2E_BW_1_7 0x03
> +
> +static struct ascot2e_band_sett ascot2e_sett[] = {
> + { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06,
> + ASCOT2E_OFFSET(-8), ASCOT2E_OFFSET(-6), ASCOT2E_BW_6, 0x0B, 0x00 },
> + { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06,
> + ASCOT2E_OFFSET(-8), ASCOT2E_OFFSET(-6), ASCOT2E_BW_6, 0x0B, 0x00 },
> + { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06,
> + ASCOT2E_OFFSET(-6), ASCOT2E_OFFSET(-4), ASCOT2E_BW_7, 0x0B, 0x00 },
> + { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06,
> + ASCOT2E_OFFSET(-4), ASCOT2E_OFFSET(-2), ASCOT2E_BW_8, 0x0B, 0x00 },
> + { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06,
> + ASCOT2E_OFFSET(-10), ASCOT2E_OFFSET(-16), ASCOT2E_BW_1_7, 0x0B, 0x00 },
> + { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06,
> + ASCOT2E_OFFSET(-8), ASCOT2E_OFFSET(-6), ASCOT2E_BW_6, 0x0B, 0x00 },
> + { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06,
> + ASCOT2E_OFFSET(-8), ASCOT2E_OFFSET(-6), ASCOT2E_BW_6, 0x0B, 0x00 },
> + { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06,
> + ASCOT2E_OFFSET(-6), ASCOT2E_OFFSET(-4), ASCOT2E_BW_7, 0x0B, 0x00 },
> + { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06,
> + ASCOT2E_OFFSET(-4), ASCOT2E_OFFSET(-2), ASCOT2E_BW_8, 0x0B, 0x00 },
> + { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x02, ASCOT2E_AUTO, 0x03,
> + ASCOT2E_OFFSET(-6), ASCOT2E_OFFSET(-8), ASCOT2E_BW_6, 0x09, 0x00 },
> + { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x02, ASCOT2E_AUTO, 0x03,
> + ASCOT2E_OFFSET(-2), ASCOT2E_OFFSET(-1), ASCOT2E_BW_8, 0x09, 0x00 },
> + { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x01,
> + ASCOT2E_OFFSET(-6), ASCOT2E_OFFSET(-4), ASCOT2E_BW_6, 0x09, 0x00 },
> + { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x01,
> + ASCOT2E_OFFSET(-2), ASCOT2E_OFFSET(2), ASCOT2E_BW_8, 0x09, 0x00 }
> +};
> +
> +static void ascot2e_i2c_debug(struct ascot2e_priv *priv,
> + u8 reg, u8 write, const u8 *data, u32 len)
> +{
> + dev_dbg(&priv->i2c->dev, "ascot2e: I2C %s reg 0x%02x size %d\n",
> + (write == 0 ? "read" : "write"), reg, len);
> +#if defined(CONFIG_DYNAMIC_DEBUG)
> + dynamic_hex_dump("ascot2e: I2C data: ",
> + DUMP_PREFIX_OFFSET, 16, 1, data, len, false);
> +#endif
> +}
> +
> +static int ascot2e_write_regs(struct ascot2e_priv *priv,
> + u8 reg, const u8 *data, u32 len)
> +{
> + int ret;
> + u8 buf[len+1];
> + struct i2c_msg msg[1] = {
> + {
> + .addr = priv->i2c_address,
> + .flags = 0,
> + .len = sizeof(buf),
> + .buf = buf,
> + }
> + };
> +
> + ascot2e_i2c_debug(priv, reg, 1, data, len);
> + buf[0] = reg;
> + memcpy(&buf[1], data, len);
> +
> + ret = i2c_transfer(priv->i2c, msg, 1);
> + if (ret >= 0 && ret != 1)
> + ret = -EREMOTEIO;
> + if (ret < 0) {
> + dev_warn(&priv->i2c->dev,
> + "%s: i2c wr failed=%d reg=%02x len=%d\n",
> + KBUILD_MODNAME, ret, reg, len);
> + return ret;
> + }
> + return 0;
> +}
> +
> +static int ascot2e_write_reg(struct ascot2e_priv *priv, u8 reg, u8 val)
> +{
> + return ascot2e_write_regs(priv, reg, &val, 1);
> +}
> +
> +static int ascot2e_read_regs(struct ascot2e_priv *priv,
> + u8 reg, u8 *val, u32 len)
> +{
> + int ret;
> + struct i2c_msg msg[2] = {
> + {
> + .addr = priv->i2c_address,
> + .flags = 0,
> + .len = 1,
> + .buf = ®,
> + }, {
> + .addr = priv->i2c_address,
> + .flags = I2C_M_RD,
> + .len = len,
> + .buf = val,
> + }
> + };
> +
> + ret = i2c_transfer(priv->i2c, &msg[0], 1);
> + if (ret >= 0 && ret != 1)
> + ret = -EREMOTEIO;
> + if (ret < 0) {
> + dev_warn(&priv->i2c->dev,
> + "%s: I2C rw failed=%d addr=%02x reg=%02x\n",
> + KBUILD_MODNAME, ret, priv->i2c_address, reg);
> + return ret;
> + }
> +
> + ret = i2c_transfer(priv->i2c, &msg[1], 1);
> + if (ret >= 0 && ret != 1)
> + ret = -EREMOTEIO;
> + if (ret < 0) {
> + dev_warn(&priv->i2c->dev,
> + "%s: i2c rd failed=%d addr=%02x reg=%02x\n",
> + KBUILD_MODNAME, ret, priv->i2c_address, reg);
> + return ret;
> + }
> + ascot2e_i2c_debug(priv, reg, 0, val, len);
> + return 0;
> +}
> +
> +static int ascot2e_read_reg(struct ascot2e_priv *priv, u8 reg, u8 *val)
> +{
> + return ascot2e_read_regs(priv, reg, val, 1);
> +}
> +
> +static int ascot2e_set_reg_bits(struct ascot2e_priv *priv,
> + u8 reg, u8 data, u8 mask)
> +{
> + int res;
> + u8 rdata;
> +
> + if (mask != 0xff) {
> + res = ascot2e_read_reg(priv, reg, &rdata);
> + if (res != 0)
> + return res;
> + data = ((data & mask) | (rdata & (mask ^ 0xFF)));
> + }
> + return ascot2e_write_reg(priv, reg, data);
> +}
> +
> +static int ascot2e_enter_power_save(struct ascot2e_priv *priv)
> +{
> + u8 data[2];
> +
> + dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
> + if (priv->state == STATE_SLEEP)
> + return 0;
> + data[0] = 0x00;
> + data[1] = 0x04;
> + ascot2e_write_regs(priv, 0x14, data, 2);
> + ascot2e_write_reg(priv, 0x50, 0x01);
> + priv->state = STATE_SLEEP;
> + return 0;
> +}
> +
> +static int ascot2e_leave_power_save(struct ascot2e_priv *priv)
> +{
> + u8 data[2] = { 0xFB, 0x0F };
> +
> + dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
> + if (priv->state == STATE_ACTIVE)
> + return 0;
> + ascot2e_write_regs(priv, 0x14, data, 2);
> + ascot2e_write_reg(priv, 0x50, 0x00);
> + priv->state = STATE_ACTIVE;
> + return 0;
> +}
> +
> +static int ascot2e_init(struct dvb_frontend *fe)
> +{
> + struct ascot2e_priv *priv = fe->tuner_priv;
> +
> + dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
> + return ascot2e_leave_power_save(priv);
> +}
> +
> +static int ascot2e_release(struct dvb_frontend *fe)
> +{
> + struct ascot2e_priv *priv = fe->tuner_priv;
> +
> + dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
> + kfree(fe->tuner_priv);
> + fe->tuner_priv = NULL;
> + return 0;
> +}
> +
> +static int ascot2e_sleep(struct dvb_frontend *fe)
> +{
> + struct ascot2e_priv *priv = fe->tuner_priv;
> +
> + dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
> + ascot2e_enter_power_save(priv);
> + return 0;
> +}
> +
> +static enum ascot2e_tv_system_t ascot2e_get_tv_system(struct dvb_frontend
> *fe)
> +{
> + enum ascot2e_tv_system_t system = ASCOT2E_DTV_UNKNOWN;
> + struct dtv_frontend_properties *p = &fe->dtv_property_cache;
> + struct ascot2e_priv *priv = fe->tuner_priv;
> +
> + if (p->delivery_system == SYS_DVBT) {
> + if (p->bandwidth_hz <= 5000000)
> + system = ASCOT2E_DTV_DVBT_5;
> + else if (p->bandwidth_hz <= 6000000)
> + system = ASCOT2E_DTV_DVBT_6;
> + else if (p->bandwidth_hz <= 7000000)
> + system = ASCOT2E_DTV_DVBT_7;
> + else if (p->bandwidth_hz <= 8000000)
> + system = ASCOT2E_DTV_DVBT_8;
> + else {
> + system = ASCOT2E_DTV_DVBT_8;
> + p->bandwidth_hz = 8000000;
> + }
> + } else if (p->delivery_system == SYS_DVBT2) {
> + if (p->bandwidth_hz <= 5000000)
> + system = ASCOT2E_DTV_DVBT2_5;
> + else if (p->bandwidth_hz <= 6000000)
> + system = ASCOT2E_DTV_DVBT2_6;
> + else if (p->bandwidth_hz <= 7000000)
> + system = ASCOT2E_DTV_DVBT2_7;
> + else if (p->bandwidth_hz <= 8000000)
> + system = ASCOT2E_DTV_DVBT2_8;
> + else {
> + system = ASCOT2E_DTV_DVBT2_8;
> + p->bandwidth_hz = 8000000;
> + }
> + } else if (p->delivery_system == SYS_DVBC_ANNEX_A) {
> + /* only 8MHz bandwidth supported now */
> + system = ASCOT2E_DTV_DVBC_8;
> + p->bandwidth_hz = 8000000;
Hmm... Why? It seems on my eyes that the rest of the code would
accept ASCOT2E_DTV_DVBC_6. Wasn't it tested, or is it broken?
> + }
> + dev_dbg(&priv->i2c->dev,
> + "%s(): ASCOT2E DTV system %d (delsys %d, bandwidth %d)\n",
> + __func__, (int)system, p->delivery_system, p->bandwidth_hz);
> + return system;
> +}
> +
> +static int ascot2e_set_params(struct dvb_frontend *fe)
> +{
> + u8 data[10];
> + u32 frequency;
> + enum ascot2e_tv_system_t tv_system;
> + struct dtv_frontend_properties *p = &fe->dtv_property_cache;
> + struct ascot2e_priv *priv = fe->tuner_priv;
> +
> + dev_dbg(&priv->i2c->dev, "%s(): tune frequency %dkHz\n",
> + __func__, p->frequency / 1000);
> + tv_system = ascot2e_get_tv_system(fe);
> +
> + if (tv_system == ASCOT2E_DTV_UNKNOWN) {
> + dev_dbg(&priv->i2c->dev, "%s(): unknown DTV system\n",
> + __func__);
> + return -EINVAL;
> + }
> + if (priv->set_tuner)
> + priv->set_tuner(priv->set_tuner_data, 1);
> + frequency = roundup(p->frequency / 1000, 25);
> + if (priv->state == STATE_SLEEP)
> + ascot2e_leave_power_save(priv);
> +
> + /* IF_OUT_SEL / AGC_SEL setting */
> + data[0] = 0x00;
> + if (ascot2e_sett[tv_system].agc_sel != ASCOT2E_AUTO) {
> + /* AGC pin setting from parameter table */
> + data[0] |= (u8)(
> + (ascot2e_sett[tv_system].agc_sel & 0x03) << 3);
> + }
> + if (ascot2e_sett[tv_system].if_out_sel != ASCOT2E_AUTO) {
> + /* IFOUT pin setting from parameter table */
> + data[0] |= (u8)(
> + (ascot2e_sett[tv_system].if_out_sel & 0x01) << 2);
> + }
> + /* Set bit[4:2] only */
> + ascot2e_set_reg_bits(priv, 0x05, data[0], 0x1c);
> + /* 0x06 - 0x0F */
> + /* REF_R setting (0x06) */
> + if (tv_system == ASCOT2E_DTV_DVBC_6 ||
> + tv_system == ASCOT2E_DTV_DVBC_8) {
> + /* xtal, xtal*2 */
> + data[0] = (frequency > 500000) ? 16 : 32;
> + } else {
> + /* xtal/8, xtal/4 */
> + data[0] = (frequency > 500000) ? 2 : 4;
> + }
> + /* XOSC_SEL=100uA */
> + data[1] = 0x04;
> + /* KBW setting (0x08), KC0 setting (0x09), KC1 setting (0x0A) */
> + if (tv_system == ASCOT2E_DTV_DVBC_6 ||
> + tv_system == ASCOT2E_DTV_DVBC_8) {
> + data[2] = 18;
> + data[3] = 120;
> + data[4] = 20;
> + } else {
> + data[2] = 48;
> + data[3] = 10;
> + data[4] = 30;
> + }
> + /* ORDER/R2_RANGE/R2_BANK/C2_BANK setting (0x0B) */
> + if (tv_system == ASCOT2E_DTV_DVBC_6 ||
> + tv_system == ASCOT2E_DTV_DVBC_8)
> + data[5] = (frequency > 500000) ? 0x08 : 0x0c;
> + else
> + data[5] = (frequency > 500000) ? 0x30 : 0x38;
> + /* Set MIX_OLL (0x0C) value from parameter table */
> + data[6] = ascot2e_sett[tv_system].mix_oll;
> + /* Set RF_GAIN (0x0D) setting from parameter table */
> + if (ascot2e_sett[tv_system].rf_gain == ASCOT2E_AUTO) {
> + /* RF_GAIN auto control enable */
> + ascot2e_write_reg(priv, 0x4E, 0x01);
> + /* RF_GAIN Default value */
> + data[7] = 0x00;
> + } else {
> + /* RF_GAIN auto control disable */
> + ascot2e_write_reg(priv, 0x4E, 0x00);
> + data[7] = ascot2e_sett[tv_system].rf_gain;
> + }
> + /* Set IF_BPF_GC/FIF_OFFSET (0x0E) value from parameter table */
> + data[8] = (u8)((ascot2e_sett[tv_system].fif_offset << 3) |
> + (ascot2e_sett[tv_system].if_bpf_gc & 0x07));
> + /* Set BW_OFFSET (0x0F) value from parameter table */
> + data[9] = ascot2e_sett[tv_system].bw_offset;
> + ascot2e_write_regs(priv, 0x06, data, 10);
> + /*
> + * 0x45 - 0x47
> + * LNA optimization setting
> + * RF_LNA_DIST1-5, RF_LNA_CM
> + */
> + if (tv_system == ASCOT2E_DTV_DVBC_6 ||
> + tv_system == ASCOT2E_DTV_DVBC_8) {
> + data[0] = 0x0F;
> + data[1] = 0x00;
> + data[2] = 0x01;
> + } else {
> + data[0] = 0x0F;
> + data[1] = 0x00;
> + data[2] = 0x03;
> + }
> + ascot2e_write_regs(priv, 0x45, data, 3);
> + /* 0x49 - 0x4A
> + Set RF_OLDET_ENX/RF_OLDET_OLL value from parameter table */
> + data[0] = ascot2e_sett[tv_system].rf_oldet;
> + /* Set IF_BPF_F0 value from parameter table */
> + data[1] = ascot2e_sett[tv_system].if_bpf_f0;
> + ascot2e_write_regs(priv, 0x49, data, 2);
> + /*
> + * Tune now
> + * RFAGC fast mode / RFAGC auto control enable
> + * (set bit[7], bit[5:4] only)
> + * vco_cal = 1, set MIX_OL_CPU_EN
> + */
> + ascot2e_set_reg_bits(priv, 0x0c, 0x90, 0xb0);
> + /* Logic wake up, CPU wake up */
> + data[0] = 0xc4;
> + data[1] = 0x40;
> + ascot2e_write_regs(priv, 0x03, data, 2);
> + /* 0x10 - 0x14 */
> + data[0] = (u8)(frequency & 0xFF); /* 0x10: FRF_L */
> + data[1] = (u8)((frequency >> 8) & 0xFF); /* 0x11: FRF_M */
> + data[2] = (u8)((frequency >> 16) & 0x0F); /* 0x12: FRF_H (bit[3:0]) */
> + /* 0x12: BW (bit[5:4]) */
> + data[2] |= (u8)(ascot2e_sett[tv_system].bw << 4);
> + data[3] = 0xFF; /* 0x13: VCO calibration enable */
> + data[4] = 0xFF; /* 0x14: Analog block enable */
> + /* Tune (Burst write) */
> + ascot2e_write_regs(priv, 0x10, data, 5);
> + msleep(50);
> + /* CPU deep sleep */
> + ascot2e_write_reg(priv, 0x04, 0x00);
> + /* Logic sleep */
> + ascot2e_write_reg(priv, 0x03, 0xC0);
> + /* RFAGC normal mode (set bit[5:4] only) */
> + ascot2e_set_reg_bits(priv, 0x0C, 0x00, 0x30);
> + priv->frequency = frequency;
> + return 0;
> +}
> +
> +static int ascot2e_get_frequency(struct dvb_frontend *fe, u32 *frequency)
> +{
> + struct ascot2e_priv *priv = fe->tuner_priv;
> +
> + *frequency = priv->frequency * 1000;
> + return 0;
> +}
> +
> +static struct dvb_tuner_ops ascot2e_tuner_ops = {
> + .info = {
> + .name = "Sony ASCOT2E",
> + .frequency_min = 1000000,
> + .frequency_max = 1200000000,
> + .frequency_step = 25000,
> + },
> + .init = ascot2e_init,
> + .release = ascot2e_release,
> + .sleep = ascot2e_sleep,
> + .set_params = ascot2e_set_params,
> + .get_frequency = ascot2e_get_frequency,
> +};
> +
> +struct dvb_frontend *ascot2e_attach(struct dvb_frontend *fe,
> + const struct ascot2e_config *config,
> + struct i2c_adapter *i2c)
> +{
> + u8 data[4];
> + struct ascot2e_priv *priv = NULL;
> +
> + priv = kzalloc(sizeof(struct ascot2e_priv), GFP_KERNEL);
> + if (priv == NULL)
> + return NULL;
> + priv->i2c_address = (config->i2c_address >> 1);
> + priv->i2c = i2c;
> + priv->set_tuner_data = config->set_tuner_priv;
> + priv->set_tuner = config->set_tuner_callback;
> +
> + if (fe->ops.i2c_gate_ctrl)
> + fe->ops.i2c_gate_ctrl(fe, 1);
> +
> + /* 16 MHz xTal frequency */
> + data[0] = 16;
> + /* VCO current setting */
> + data[1] = 0x06;
> + /* Logic wake up, CPU boot */
> + data[2] = 0xC4;
> + data[3] = 0x40;
> + ascot2e_write_regs(priv, 0x01, data, 4);
> + /* RFVGA optimization setting (RF_DIST0 - RF_DIST2) */
> + data[0] = 0x10;
> + data[1] = 0x3F;
> + data[2] = 0x25;
> + ascot2e_write_regs(priv, 0x22, data, 3);
> + /* PLL mode setting */
> + ascot2e_write_reg(priv, 0x28, 0x1e);
> + /* RSSI setting */
> + ascot2e_write_reg(priv, 0x59, 0x04);
> + /* TODO check CPU HW error state here */
> + msleep(80);
> + /* Xtal oscillator current control setting */
> + ascot2e_write_reg(priv, 0x4c, 0x01);
> + /* XOSC_SEL=100uA */
> + ascot2e_write_reg(priv, 0x07, 0x04);
> + /* CPU deep sleep */
> + ascot2e_write_reg(priv, 0x04, 0x00);
> + /* Logic sleep */
> + ascot2e_write_reg(priv, 0x03, 0xc0);
> + /* Power save setting */
> + data[0] = 0x00;
> + data[1] = 0x04;
> + ascot2e_write_regs(priv, 0x14, data, 2);
> + ascot2e_write_reg(priv, 0x50, 0x01);
> + priv->state = STATE_SLEEP;
> +
> + if (fe->ops.i2c_gate_ctrl)
> + fe->ops.i2c_gate_ctrl(fe, 0);
> +
> + memcpy(&fe->ops.tuner_ops, &ascot2e_tuner_ops,
> + sizeof(struct dvb_tuner_ops));
> + fe->tuner_priv = priv;
> + dev_info(&priv->i2c->dev,
> + "Sony ASCOT2E attached on addr=%x at I2C adapter %p\n",
> + priv->i2c_address, priv->i2c);
> + return fe;
> +}
> +EXPORT_SYMBOL(ascot2e_attach);
> +
> +MODULE_DESCRIPTION("Sony ASCOT2E terr/cab tuner driver");
> +MODULE_AUTHOR("i...@netup.ru");
> +MODULE_LICENSE("GPL");
> diff --git a/drivers/media/dvb-frontends/ascot2e.h
> b/drivers/media/dvb-frontends/ascot2e.h
> new file mode 100644
> index 0000000..b9e12a3
> --- /dev/null
> +++ b/drivers/media/dvb-frontends/ascot2e.h
> @@ -0,0 +1,58 @@
> +/*
> + * ascot2e.h
> + *
> + * Sony Ascot3E DVB-T/T2/C/C2 tuner driver
> + *
> + * Copyright 2012 Sony Corporation
> + * Copyright (C) 2014 NetUP Inc.
> + * Copyright (C) 2014 Sergey Kozlov <se...@netup.ru>
> + * Copyright (C) 2014 Abylay Ospan <aos...@netup.ru>
> + *
> + * 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.
> + */
> +
> +#ifndef __DVB_ASCOT2E_H__
> +#define __DVB_ASCOT2E_H__
> +
> +#include <linux/kconfig.h>
> +#include <linux/dvb/frontend.h>
> +#include <linux/i2c.h>
> +
> +/**
> + * struct ascot2e_config - the configuration of Ascot2E tuner driver
> + * @i2c_address: I2C address of the tuner
> + * @xtal_freq_mhz: Oscillator frequency, MHz
> + * @set_tuner_priv: Callback function private context
> + * @set_tuner_callback: Callback function that notifies the parent
> driver
> + * which tuner is active now
> + */
> +struct ascot2e_config {
> + u8 i2c_address;
> + u8 xtal_freq_mhz;
> + void *set_tuner_priv;
> + int (*set_tuner_callback)(void *, int);
> +};
> +
> +#if IS_ENABLED(CONFIG_DVB_ASCOT2E)
IS_REACHABLE()
> +extern struct dvb_frontend *ascot2e_attach(struct dvb_frontend *fe,
> + const struct ascot2e_config *config,
> + struct i2c_adapter *i2c);
> +#else
> +static inline struct dvb_frontend *ascot2e_attach(struct dvb_frontend *fe,
> + const struct ascot2e_config *config,
> + struct i2c_adapter *i2c)
> +{
> + printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
> + return NULL;
> +}
> +#endif
> +
> +#endif
--
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