V4L/DVB (7621): Add support for Hauppauge HVR950Q/HVR850/FusioHDTV7-USB

Including support for the AU0828 USB Bridge.
Including support for the AU8522 ATSC/QAM Demodulator.
Including support for the AU8522 ATSC/QAM Demodulator.

Signed-off-by: Steven Toth <stoth@hauppauge.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

4 files changed, 512 insertions, 0 deletions

diff --git a/drivers/media/dvb/frontends/Kconfig b/drivers/media/dvb/frontends/Kconfig
index 4284a3092c14..ae3659be323f 100644
--- a/drivers/media/dvb/frontends/Kconfig
+++ b/drivers/media/dvb/frontends/Kconfig
@@ -291,6 +291,14 @@ config DVB_S5H1409
           An ATSC 8VSB and QAM64/256 tuner module. Say Y when you want
           to support this frontend.
 
+config DVB_AU8522
+        tristate "Auvitek AU8522 based"
+        depends on DVB_CORE && I2C
+        default m if DVB_FE_CUSTOMISE
+        help
+          An ATSC 8VSB and QAM64/256 tuner module. Say Y when you want
+          to support this frontend.
+
 comment "Tuners/PLL support"
         depends on DVB_CORE
 
diff --git a/drivers/media/dvb/frontends/Makefile b/drivers/media/dvb/frontends/Makefile
index 129367886bcc..8e23a30ed3be 100644
--- a/drivers/media/dvb/frontends/Makefile
+++ b/drivers/media/dvb/frontends/Makefile
@@ -53,3 +53,4 @@ obj-$(CONFIG_DVB_TUNER_MT2131) += mt2131.o
 obj-$(CONFIG_DVB_S5H1409) += s5h1409.o
 obj-$(CONFIG_DVB_TUNER_XC5000) += xc5000.o
 obj-$(CONFIG_DVB_TUNER_ITD1000) += itd1000.o
+obj-$(CONFIG_DVB_AU8522) += au8522.o
diff --git a/drivers/media/dvb/frontends/au8522.c b/drivers/media/dvb/frontends/au8522.c
new file mode 100644
index 000000000000..d3c44b95e240
--- /dev/null
+++ b/drivers/media/dvb/frontends/au8522.c
@@ -0,0 +1,448 @@
+/*
+    Auvitek AU8522 QAM/8VSB demodulator driver
+
+    Copyright (C) 2008 Steven Toth <stoth@hauppauge.com>
+
+    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/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include "dvb_frontend.h"
+#include "dvb-pll.h"
+#include "au8522.h"
+
+struct au8522_state {
+
+        struct i2c_adapter* i2c;
+
+        /* configuration settings */
+        const struct au8522_config* config;
+
+        struct dvb_frontend frontend;
+
+        u32 current_frequency;
+        fe_modulation_t current_modulation;
+
+};
+
+static int debug = 0;
+#define dprintk if (debug) printk
+
+/* 16 bit registers, 8 bit values */
+static int au8522_writereg(struct au8522_state* state, u16 reg, u8 data)
+{
+        int ret;
+        u8 buf [] = { reg >> 8, reg & 0xff, data };
+
+        struct i2c_msg msg = { .addr = state->config->demod_address,
+                               .flags = 0, .buf = buf, .len = 3 };
+
+        ret = i2c_transfer(state->i2c, &msg, 1);
+
+        if (ret != 1)
+                printk("%s: writereg error (reg == 0x%02x, val == 0x%04x, "
+                       "ret == %i)\n", __FUNCTION__, reg, data, ret);
+
+        return (ret != 1) ? -1 : 0;
+}
+
+static u8 au8522_readreg(struct au8522_state* state, u16 reg)
+{
+        int ret;
+        u8 b0 [] = { reg >> 8, reg & 0xff };
+        u8 b1 [] = { 0 };
+
+        struct i2c_msg msg [] = {
+                { .addr = state->config->demod_address, .flags = 0,
+                  .buf = b0, .len = 2 },
+                { .addr = state->config->demod_address, .flags = I2C_M_RD,
+                  .buf = b1, .len = 1 } };
+
+        ret = i2c_transfer(state->i2c, msg, 2);
+
+        if (ret != 2)
+                printk("%s: readreg error (ret == %i)\n", __FUNCTION__, ret);
+        return b1[0];
+}
+
+static int au8522_i2c_gate_ctrl(struct dvb_frontend* fe, int enable)
+{
+        struct au8522_state* state = fe->demodulator_priv;
+
+        dprintk("%s(%d)\n", __FUNCTION__, enable);
+
+        if (enable)
+                return au8522_writereg(state, 0x106, 1);
+        else
+                return au8522_writereg(state, 0x106, 0);
+}
+
+static int au8522_enable_modulation(struct dvb_frontend* fe,
+        fe_modulation_t m)
+{
+        struct au8522_state* state = fe->demodulator_priv;
+
+        dprintk("%s(0x%08x)\n", __FUNCTION__, m);
+
+        switch(m) {
+        case VSB_8:
+                dprintk("%s() VSB_8\n", __FUNCTION__);
+
+                //au8522_writereg(state, 0x410b, 0x84); // Serial
+
+                //au8522_writereg(state, 0x8090, 0x82);
+                au8522_writereg(state, 0x8090, 0x84);
+                au8522_writereg(state, 0x4092, 0x11);
+                au8522_writereg(state, 0x2005, 0x00);
+                au8522_writereg(state, 0x8091, 0x80);
+
+                au8522_writereg(state, 0x80a3, 0x0c);
+                au8522_writereg(state, 0x80a4, 0xe8);
+                au8522_writereg(state, 0x8081, 0xc4);
+                au8522_writereg(state, 0x80a5, 0x40);
+                au8522_writereg(state, 0x80a7, 0x40);
+                au8522_writereg(state, 0x80a6, 0x67);
+                au8522_writereg(state, 0x8262, 0x20);
+                au8522_writereg(state, 0x821c, 0x30);
+                au8522_writereg(state, 0x80d8, 0x1a);
+                au8522_writereg(state, 0x8227, 0xa0);
+                au8522_writereg(state, 0x8121, 0xff);
+                au8522_writereg(state, 0x80a8, 0xf0);
+                au8522_writereg(state, 0x80a9, 0x05);
+                au8522_writereg(state, 0x80aa, 0x77);
+                au8522_writereg(state, 0x80ab, 0xf0);
+                au8522_writereg(state, 0x80ac, 0x05);
+                au8522_writereg(state, 0x80ad, 0x77);
+                au8522_writereg(state, 0x80ae, 0x41);
+                au8522_writereg(state, 0x80af, 0x66);
+                au8522_writereg(state, 0x821b, 0xcc);
+                au8522_writereg(state, 0x821d, 0x80);
+                au8522_writereg(state, 0x80b5, 0xfb);
+                au8522_writereg(state, 0x80b6, 0x8e);
+                au8522_writereg(state, 0x80b7, 0x39);
+                au8522_writereg(state, 0x80a4, 0xe8);
+                au8522_writereg(state, 0x8231, 0x13);
+                break;
+        case QAM_64:
+        case QAM_256:
+                au8522_writereg(state, 0x80a3, 0x09);
+                au8522_writereg(state, 0x80a4, 0x00);
+                au8522_writereg(state, 0x8081, 0xc4);
+                au8522_writereg(state, 0x80a5, 0x40);
+                au8522_writereg(state, 0x80b5, 0xfb);
+                au8522_writereg(state, 0x80b6, 0x8e);
+                au8522_writereg(state, 0x80b7, 0x39);
+                au8522_writereg(state, 0x80aa, 0x77);
+                au8522_writereg(state, 0x80ad, 0x77);
+                au8522_writereg(state, 0x80a6, 0x67);
+                au8522_writereg(state, 0x8262, 0x20);
+                au8522_writereg(state, 0x821c, 0x30);
+                au8522_writereg(state, 0x80b8, 0x3e);
+                au8522_writereg(state, 0x80b9, 0xf0);
+                au8522_writereg(state, 0x80ba, 0x01);
+                au8522_writereg(state, 0x80bb, 0x18);
+                au8522_writereg(state, 0x80bc, 0x50);
+                au8522_writereg(state, 0x80bd, 0x00);
+                au8522_writereg(state, 0x80be, 0xea);
+                au8522_writereg(state, 0x80bf, 0xef);
+                au8522_writereg(state, 0x80c0, 0xfc);
+                au8522_writereg(state, 0x80c1, 0xbd);
+                au8522_writereg(state, 0x80c2, 0x1f);
+                au8522_writereg(state, 0x80c3, 0xfc);
+                au8522_writereg(state, 0x80c4, 0xdd);
+                au8522_writereg(state, 0x80c5, 0xaf);
+                au8522_writereg(state, 0x80c6, 0x00);
+                au8522_writereg(state, 0x80c7, 0x38);
+                au8522_writereg(state, 0x80c8, 0x30);
+                au8522_writereg(state, 0x80c9, 0x05);
+                au8522_writereg(state, 0x80ca, 0x4a);
+                au8522_writereg(state, 0x80cb, 0xd0);
+                au8522_writereg(state, 0x80cc, 0x01);
+                au8522_writereg(state, 0x80cd, 0xd9);
+                au8522_writereg(state, 0x80ce, 0x6f);
+                au8522_writereg(state, 0x80cf, 0xf9);
+                au8522_writereg(state, 0x80d0, 0x70);
+                au8522_writereg(state, 0x80d1, 0xdf);
+                au8522_writereg(state, 0x80d2, 0xf7);
+                au8522_writereg(state, 0x80d3, 0xc2);
+                au8522_writereg(state, 0x80d4, 0xdf);
+                au8522_writereg(state, 0x80d5, 0x02);
+                au8522_writereg(state, 0x80d6, 0x9a);
+                au8522_writereg(state, 0x80d7, 0xd0);
+                au8522_writereg(state, 0x8250, 0x0d);
+                au8522_writereg(state, 0x8251, 0xcd);
+                au8522_writereg(state, 0x8252, 0xe0);
+                au8522_writereg(state, 0x8253, 0x05);
+                au8522_writereg(state, 0x8254, 0xa7);
+                au8522_writereg(state, 0x8255, 0xff);
+                au8522_writereg(state, 0x8256, 0xed);
+                au8522_writereg(state, 0x8257, 0x5b);
+                au8522_writereg(state, 0x8258, 0xae);
+                au8522_writereg(state, 0x8259, 0xe6);
+                au8522_writereg(state, 0x825a, 0x3d);
+                au8522_writereg(state, 0x825b, 0x0f);
+                au8522_writereg(state, 0x825c, 0x0d);
+                au8522_writereg(state, 0x825d, 0xea);
+                au8522_writereg(state, 0x825e, 0xf2);
+                au8522_writereg(state, 0x825f, 0x51);
+                au8522_writereg(state, 0x8260, 0xf5);
+                au8522_writereg(state, 0x8261, 0x06);
+                au8522_writereg(state, 0x821a, 0x00);
+                au8522_writereg(state, 0x8546, 0x40);
+                au8522_writereg(state, 0x8210, 0x26);
+                au8522_writereg(state, 0x8211, 0xf6);
+                au8522_writereg(state, 0x8212, 0x84);
+                au8522_writereg(state, 0x8213, 0x02);
+                au8522_writereg(state, 0x8502, 0x01);
+                au8522_writereg(state, 0x8121, 0x04);
+                au8522_writereg(state, 0x8122, 0x04);
+                au8522_writereg(state, 0x852e, 0x10);
+                au8522_writereg(state, 0x80a4, 0xca);
+                au8522_writereg(state, 0x80a7, 0x40);
+                au8522_writereg(state, 0x8526, 0x01);
+                break;
+        default:
+                dprintk("%s() Invalid modulation\n", __FUNCTION__);
+                return -EINVAL;
+        }
+
+        state->current_modulation = m;
+
+        return 0;
+}
+
+/* Talk to the demod, set the FEC, GUARD, QAM settings etc */
+static int au8522_set_frontend (struct dvb_frontend* fe,
+        struct dvb_frontend_parameters *p)
+{
+        struct au8522_state* state = fe->demodulator_priv;
+
+        dprintk("%s(frequency=%d)\n", __FUNCTION__, p->frequency);
+
+        state->current_frequency = p->frequency;
+
+        au8522_enable_modulation(fe, p->u.vsb.modulation);
+
+        /* Allow the demod to settle */
+        msleep(100);
+
+        if (fe->ops.tuner_ops.set_params) {
+                if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 1);
+                fe->ops.tuner_ops.set_params(fe, p);
+                if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0);
+        }
+
+        return 0;
+}
+
+/* Reset the demod hardware and reset all of the configuration registers
+   to a default state. */
+static int au8522_init(struct dvb_frontend* fe)
+{
+        struct au8522_state* state = fe->demodulator_priv;
+        dprintk("%s()\n", __FUNCTION__);
+
+        au8522_writereg(state, 0xa4, 1 << 5);
+
+        au8522_i2c_gate_ctrl(fe, 1);
+
+        return 0;
+}
+
+static int au8522_read_status(struct dvb_frontend* fe, fe_status_t* status)
+{
+        struct au8522_state* state = fe->demodulator_priv;
+        u8 reg;
+        u32 tuner_status = 0;
+
+        *status = 0;
+
+        if (state->current_modulation == VSB_8) {
+                dprintk("%s() Checking VSB_8\n", __FUNCTION__);
+                //au8522_writereg(state, 0x80a4, 0x20);
+                reg = au8522_readreg(state, 0x4088);
+                if(reg & 0x01)
+                        *status |= FE_HAS_VITERBI;
+                if(reg & 0x02)
+                        *status |= FE_HAS_LOCK | FE_HAS_SYNC;
+        } else {
+                dprintk("%s() Checking QAM\n", __FUNCTION__);
+                reg = au8522_readreg(state, 0x4541);
+                if(reg & 0x80)
+                        *status |= FE_HAS_VITERBI;
+                if(reg & 0x20)
+                        *status |= FE_HAS_LOCK | FE_HAS_SYNC;
+        }
+
+        switch(state->config->status_mode) {
+        case AU8522_DEMODLOCKING:
+                dprintk("%s() DEMODLOCKING\n", __FUNCTION__);
+                if (*status & FE_HAS_VITERBI)
+                        *status |= FE_HAS_CARRIER | FE_HAS_SIGNAL;
+                break;
+        case AU8522_TUNERLOCKING:
+                /* Get the tuner status */
+                dprintk("%s() TUNERLOCKING\n", __FUNCTION__);
+                if (fe->ops.tuner_ops.get_status) {
+                        if (fe->ops.i2c_gate_ctrl)
+                                fe->ops.i2c_gate_ctrl(fe, 1);
+
+                        fe->ops.tuner_ops.get_status(fe, &tuner_status);
+
+                        if (fe->ops.i2c_gate_ctrl)
+                                fe->ops.i2c_gate_ctrl(fe, 0);
+                }
+                if (tuner_status)
+                        *status |= FE_HAS_CARRIER | FE_HAS_SIGNAL;
+                break;
+        }
+
+        dprintk("%s() status 0x%08x\n", __FUNCTION__, *status);
+
+        return 0;
+}
+
+static int au8522_read_snr(struct dvb_frontend* fe, u16* snr)
+{
+        dprintk("%s()\n", __FUNCTION__);
+
+        *snr = 0;
+
+        return 0;
+}
+
+static int au8522_read_signal_strength(struct dvb_frontend* fe,
+                                        u16* signal_strength)
+{
+        return au8522_read_snr(fe, signal_strength);
+}
+
+static int au8522_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
+{
+        struct au8522_state* state = fe->demodulator_priv;
+
+        *ucblocks = au8522_readreg(state, 0x4087);
+
+        return 0;
+}
+
+static int au8522_read_ber(struct dvb_frontend* fe, u32* ber)
+{
+        return au8522_read_ucblocks(fe, ber);
+}
+
+static int au8522_get_frontend(struct dvb_frontend* fe,
+                                struct dvb_frontend_parameters *p)
+{
+        struct au8522_state* state = fe->demodulator_priv;
+
+        p->frequency = state->current_frequency;
+        p->u.vsb.modulation = state->current_modulation;
+
+        return 0;
+}
+
+static int au8522_get_tune_settings(struct dvb_frontend* fe,
+                                     struct dvb_frontend_tune_settings *tune)
+{
+        tune->min_delay_ms = 1000;
+        return 0;
+}
+
+static void au8522_release(struct dvb_frontend* fe)
+{
+        struct au8522_state* state = fe->demodulator_priv;
+        kfree(state);
+}
+
+static struct dvb_frontend_ops au8522_ops;
+
+struct dvb_frontend* au8522_attach(const struct au8522_config* config,
+                                    struct i2c_adapter* i2c)
+{
+        struct au8522_state* state = NULL;
+
+        /* allocate memory for the internal state */
+        state = kmalloc(sizeof(struct au8522_state), GFP_KERNEL);
+        if (state == NULL)
+                goto error;
+
+        /* setup the state */
+        state->config = config;
+        state->i2c = i2c;
+        /* create dvb_frontend */
+        memcpy(&state->frontend.ops, &au8522_ops,
+               sizeof(struct dvb_frontend_ops));
+        state->frontend.demodulator_priv = state;
+
+        if (au8522_init(&state->frontend) != 0) {
+                printk(KERN_ERR "%s: Failed to initialize correctly\n",
+                        __FUNCTION__);
+                goto error;
+        }
+
+        /* Note: Leaving the I2C gate open here. */
+        au8522_i2c_gate_ctrl(&state->frontend, 1);
+
+        return &state->frontend;
+
+error:
+        kfree(state);
+        return NULL;
+}
+
+static struct dvb_frontend_ops au8522_ops = {
+
+        .info = {
+                .name                   = "Auvitek AU8522 QAM/8VSB Frontend",
+                .type                   = FE_ATSC,
+                .frequency_min          = 54000000,
+                .frequency_max          = 858000000,
+                .frequency_stepsize     = 62500,
+                .caps = FE_CAN_QAM_64 | FE_CAN_QAM_256 | FE_CAN_8VSB
+        },
+
+        .init                 = au8522_init,
+        .i2c_gate_ctrl        = au8522_i2c_gate_ctrl,
+        .set_frontend         = au8522_set_frontend,
+        .get_frontend         = au8522_get_frontend,
+        .get_tune_settings    = au8522_get_tune_settings,
+        .read_status          = au8522_read_status,
+        .read_ber             = au8522_read_ber,
+        .read_signal_strength = au8522_read_signal_strength,
+        .read_snr             = au8522_read_snr,
+        .read_ucblocks        = au8522_read_ucblocks,
+        .release              = au8522_release,
+};
+
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Enable verbose debug messages");
+
+MODULE_DESCRIPTION("Auvitek AU8522 QAM-B/ATSC Demodulator driver");
+MODULE_AUTHOR("Steven Toth");
+MODULE_LICENSE("GPL");
+
+EXPORT_SYMBOL(au8522_attach);
+
+/*
+ * Local variables:
+ * c-basic-offset: 8
+ */
diff --git a/drivers/media/dvb/frontends/au8522.h b/drivers/media/dvb/frontends/au8522.h
new file mode 100644
index 000000000000..a75627155fed
--- /dev/null
+++ b/drivers/media/dvb/frontends/au8522.h
@@ -0,0 +1,55 @@
+/*
+    Auvitek AU8522 QAM/8VSB demodulator driver
+
+    Copyright (C) 2008 Steven Toth <stoth@hauppauge.com>
+
+    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.
+
+*/
+
+#ifndef __AU8522_H__
+#define __AU8522_H__
+
+#include <linux/dvb/frontend.h>
+
+struct au8522_config
+{
+        /* the demodulator's i2c address */
+        u8 demod_address;
+
+        /* Return lock status based on tuner lock, or demod lock */
+#define AU8522_TUNERLOCKING 0
+#define AU8522_DEMODLOCKING 1
+        u8 status_mode;
+};
+
+#if defined(CONFIG_DVB_AU8522) || (defined(CONFIG_DVB_AU8522_MODULE) && defined(MODULE))
+extern struct dvb_frontend* au8522_attach(const struct au8522_config* config,
+                                           struct i2c_adapter* i2c);
+#else
+static inline struct dvb_frontend* au8522_attach(const struct au8522_config* config,
+                                                  struct i2c_adapter* i2c)
+{
+        printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __FUNCTION__);
+        return NULL;
+}
+#endif /* CONFIG_DVB_AU8522 */
+
+#endif /* __AU8522_H__ */
+
+/*
+ * Local variables:
+ * c-basic-offset: 8
+ */