]> git.karo-electronics.de Git - karo-tx-linux.git/commitdiff
[media] ascot2e: Sony Ascot2e DVB-C/T/T2 tuner driver
authorKozlov Sergey <serjk@netup.ru>
Tue, 28 Jul 2015 14:33:01 +0000 (11:33 -0300)
committerMauro Carvalho Chehab <mchehab@osg.samsung.com>
Tue, 11 Aug 2015 17:54:17 +0000 (14:54 -0300)
Add DVB-T/T2/C frontend driver for Sony Ascot2e (CXD2861ER) chip.

Signed-off-by: Kozlov Sergey <serjk@netup.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
MAINTAINERS
drivers/media/dvb-frontends/Kconfig
drivers/media/dvb-frontends/Makefile
drivers/media/dvb-frontends/ascot2e.c [new file with mode: 0644]
drivers/media/dvb-frontends/ascot2e.h [new file with mode: 0644]

index 13508a5acdcede86fecffd32976884748cfc3c55..1735af359357078cad7b74620f4091ef6736cfd1 100644 (file)
@@ -6601,6 +6601,15 @@ S:       Supported
 F:     Documentation/devicetree/bindings/media/renesas,vsp1.txt
 F:     drivers/media/platform/vsp1/
 
+MEDIA DRIVERS FOR ASCOT2E
+M:     Sergey Kozlov <serjk@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 <serjk@netup.ru>
 L:     linux-media@vger.kernel.org
index 522e7dd9af3d52d958694cd1e0c7f1beb214170c..ec628c482cdf0055da59bb1b8a3e751cbd3e6a13 100644 (file)
@@ -823,6 +823,13 @@ 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
index c1a820f159011733be7c9edf04a55dfe2728c9d3..0a1bf69cb79a8ae943a0e1249f2d074f276b9a9d 100644 (file)
@@ -119,3 +119,4 @@ 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 (file)
index 0000000..ae7e463
--- /dev/null
@@ -0,0 +1,540 @@
+/*
+ * 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 <serjk@netup.ru>
+ * Copyright (C) 2014 Abylay Ospan <aospan@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);
+       print_hex_dump_bytes("ascot2e: I2C data: ",
+               DUMP_PREFIX_OFFSET, data, len);
+}
+
+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 = &reg,
+               }, {
+                       .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) {
+               if (p->bandwidth_hz <= 6000000)
+                       system = ASCOT2E_DTV_DVBC_6;
+               else if (p->bandwidth_hz <= 8000000)
+                       system = ASCOT2E_DTV_DVBC_8;
+       }
+       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("info@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 (file)
index 0000000..6da4ae6
--- /dev/null
@@ -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 <serjk@netup.ru>
+ * Copyright (C) 2014 Abylay Ospan <aospan@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_REACHABLE(CONFIG_DVB_ASCOT2E)
+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