V4L/DVB: tm6000: add ir support

Signed-off-by: Stefan Ringel <stefan.ringel@arcor.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

4 files changed, 402 insertions, 2 deletions

diff --git a/drivers/staging/tm6000/Makefile b/drivers/staging/tm6000/Makefile
index 4129c185da5..77e06bfd2c4 100644
--- a/drivers/staging/tm6000/Makefile
+++ b/drivers/staging/tm6000/Makefile
@@ -2,7 +2,8 @@ tm6000-objs := tm6000-cards.o \
                    tm6000-core.o  \
                    tm6000-i2c.o   \
                    tm6000-video.o \
-                   tm6000-stds.o
+                   tm6000-stds.o \
+                   tm6000-input.o
 
 obj-$(CONFIG_VIDEO_TM6000) += tm6000.o
 obj-$(CONFIG_VIDEO_TM6000_ALSA) += tm6000-alsa.o
diff --git a/drivers/staging/tm6000/tm6000-cards.c b/drivers/staging/tm6000/tm6000-cards.c
index 48ab5734cde..9d091c34991 100644
--- a/drivers/staging/tm6000/tm6000-cards.c
+++ b/drivers/staging/tm6000/tm6000-cards.c
@@ -29,6 +29,7 @@
 #include <media/tuner.h>
 #include <media/tvaudio.h>
 #include <media/i2c-addr.h>
+#include <media/rc-map.h>
 
 #include "tm6000.h"
 #include "tm6000-regs.h"
@@ -69,6 +70,8 @@ struct tm6000_board {
         int             demod_addr;     /* demodulator address */
 
         struct tm6000_gpio gpio;
+
+        char            *ir_codes;
 };
 
 struct tm6000_board tm6000_boards[] = {
@@ -276,6 +279,7 @@ struct tm6000_board tm6000_boards[] = {
                         .dvb_led        = TM6010_GPIO_5,
                         .ir             = TM6010_GPIO_0,
                 },
+                .ir_codes = RC_MAP_NEC_TERRATEC_CINERGY_XS,
         },
         [TM6010_BOARD_TWINHAN_TU501] = {
                 .name         = "Twinhan TU501(704D1)",
@@ -361,6 +365,8 @@ int tm6000_tuner_callback(void *ptr, int component, int command, int arg)
 
         switch (command) {
         case XC2028_RESET_CLK:
+                tm6000_ir_wait(dev, 0);
+
                 tm6000_set_reg(dev, REQ_04_EN_DISABLE_MCU_INT,
                                         0x02, arg);
                 msleep(10);
@@ -410,13 +416,14 @@ int tm6000_tuner_callback(void *ptr, int component, int command, int arg)
                                 msleep(130);
                                 break;
                         }
+
+                        tm6000_ir_wait(dev, 1);
                         break;
                 case 1:
                         tm6000_set_reg(dev, REQ_04_EN_DISABLE_MCU_INT,
                                                 0x02, 0x01);
                         msleep(10);
                         break;
-
                 case 2:
                         rc = tm6000_i2c_reset(dev, 100);
                         break;
@@ -636,6 +643,8 @@ static int tm6000_init_dev(struct tm6000_core *dev)
 
         dev->gpio = tm6000_boards[dev->model].gpio;
 
+        dev->ir_codes = tm6000_boards[dev->model].ir_codes;
+
         dev->demod_addr = tm6000_boards[dev->model].demod_addr;
 
         dev->caps = tm6000_boards[dev->model].caps;
@@ -684,6 +693,8 @@ static int tm6000_init_dev(struct tm6000_core *dev)
         tm6000_add_into_devlist(dev);
         tm6000_init_extension(dev);
 
+        tm6000_ir_init(dev);
+
         mutex_unlock(&dev->lock);
         return 0;
 
@@ -829,6 +840,19 @@ static int tm6000_usb_probe(struct usb_interface *interface,
                                                          &dev->isoc_out);
                                 }
                                 break;
+                        case USB_ENDPOINT_XFER_INT:
+                                if (!dir_out) {
+                                        get_max_endpoint(usbdev,
+                                                        &interface->altsetting[i],
+                                                        "INT IN", e,
+                                                        &dev->int_in);
+                                } else {
+                                        get_max_endpoint(usbdev,
+                                                        &interface->altsetting[i],
+                                                        "INT OUT", e,
+                                                        &dev->int_out);
+                                }
+                                break;
                         }
                 }
         }
@@ -887,6 +911,8 @@ static void tm6000_usb_disconnect(struct usb_interface *interface)
 
         mutex_lock(&dev->lock);
 
+        tm6000_ir_fini(dev);
+
         if (dev->gpio.power_led) {
                 switch (dev->model) {
                 case TM6010_BOARD_HAUPPAUGE_900H:
diff --git a/drivers/staging/tm6000/tm6000-input.c b/drivers/staging/tm6000/tm6000-input.c
new file mode 100644
index 00000000000..53336ffee8d
--- /dev/null
+++ b/drivers/staging/tm6000/tm6000-input.c
@@ -0,0 +1,364 @@
+/*
+   tm6000-input.c - driver for TM5600/TM6000/TM6010 USB video capture devices
+
+   Copyright (C) 2010 Stefan Ringel <stefan.ringel@arcor.de>
+
+   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 version 2
+
+   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/init.h>
+#include <linux/delay.h>
+
+#include <linux/input.h>
+#include <linux/usb.h>
+
+#include <media/ir-core.h>
+#include <media/ir-common.h>
+
+#include "tm6000.h"
+#include "tm6000-regs.h"
+
+static unsigned int ir_debug;
+module_param(ir_debug, int, 0644);
+MODULE_PARM_DESC(ir_debug, "enable debug message [IR]");
+
+static unsigned int enable_ir = 1;
+module_param(enable_ir, int, 0644);
+MODULE_PARM_DESC(enable_ir, "enable ir (default is enable");
+
+#undef dprintk
+
+#define dprintk(fmt, arg... ) \
+        if (ir_debug) { \
+                printk(KERN_DEBUG "%s/ir: " fmt, ir->name , ## arg); \
+        }
+
+struct tm6000_ir_poll_result {
+        u8 rc_data[4];
+};
+
+struct tm6000_IR {
+        struct tm6000_core      *dev;
+        struct ir_input_dev     *input;
+        struct ir_input_state   ir;
+        char                    name[32];
+        char                    phys[32];
+
+        /* poll expernal decoder */
+        int                     polling;
+        struct delayed_work     work;
+        u8                      wait:1;
+        struct urb              *int_urb;
+        u8                      *urb_data;
+        u8                      key:1;
+
+        int (*get_key) (struct tm6000_IR *, struct tm6000_ir_poll_result *);
+
+        /* IR device properties */
+        struct ir_dev_props     props;
+};
+
+
+void tm6000_ir_wait(struct tm6000_core *dev, u8 state)
+{
+        struct tm6000_IR *ir = dev->ir;
+
+        if (!dev->ir)
+                return;
+
+        if (state)
+                ir->wait = 1;
+        else
+                ir->wait = 0;
+}
+
+
+static int tm6000_ir_config(struct tm6000_IR *ir)
+{
+        struct tm6000_core *dev = ir->dev;
+        u8 buf[10];
+        int rc;
+
+        /* hack */
+        buf[0] = 0xff;
+        buf[1] = 0xff;
+        buf[2] = 0xf2;
+        buf[3] = 0x2b;
+        buf[4] = 0x20;
+        buf[5] = 0x35;
+        buf[6] = 0x60;
+        buf[7] = 0x04;
+        buf[8] = 0xc0;
+        buf[9] = 0x08;
+
+        rc = tm6000_read_write_usb(dev, USB_DIR_OUT | USB_TYPE_VENDOR |
+                USB_RECIP_DEVICE, REQ_00_SET_IR_VALUE, 0, 0, buf, 0x0a);
+        msleep(100);
+
+        if (rc < 0) {
+                printk(KERN_INFO "IR configuration failed");
+                return rc;
+        }
+        return 0;
+}
+
+static void tm6000_ir_urb_received(struct urb *urb)
+{
+        struct tm6000_core *dev = urb->context;
+        struct tm6000_IR *ir = dev->ir;
+        int rc;
+        
+        if (urb->status != 0)
+                printk(KERN_INFO "not ready\n");
+        else if (urb->actual_length > 0)
+                memcpy (ir->urb_data, urb->transfer_buffer, urb->actual_length);
+
+        dprintk ("data %02x %02x %02x %02x\n", ir->urb_data[0],
+        ir->urb_data[1], ir->urb_data[2], ir->urb_data[3]);
+
+        ir->key = 1;
+
+        rc = usb_submit_urb(urb, GFP_ATOMIC);
+}
+
+static int default_polling_getkey(struct tm6000_IR *ir,
+                                struct tm6000_ir_poll_result *poll_result)
+{
+        struct tm6000_core *dev = ir->dev;
+        int rc;
+        u8 buf[2];
+
+        if(ir->wait && !&dev->int_in) {
+                poll_result->rc_data[0] = 0xff;
+                return 0;
+        }
+
+        if (&dev->int_in) {
+                poll_result->rc_data[0] = ir->urb_data[0];
+                poll_result->rc_data[1] = ir->urb_data[1];
+        } else {
+                tm6000_set_reg(dev, REQ_04_EN_DISABLE_MCU_INT, 2, 0);
+                msleep(10);
+                tm6000_set_reg(dev, REQ_04_EN_DISABLE_MCU_INT, 2, 1);
+                msleep(10);
+
+                rc = tm6000_read_write_usb(dev, USB_DIR_IN | USB_TYPE_VENDOR |
+                 USB_RECIP_DEVICE, REQ_02_GET_IR_CODE, 0, 0, buf, 1);
+
+                msleep(10);
+
+                dprintk ("read data=%02x\n", buf[0]);
+                if (rc < 0) {
+                        return rc;
+                }
+                poll_result->rc_data[0] = buf[0];
+        }
+        return 0;
+}
+
+static void tm6000_ir_handle_key(struct tm6000_IR *ir)
+{
+        int result;
+        struct tm6000_ir_poll_result poll_result;
+
+        /* read the registers containing the IR status */
+        result = ir->get_key(ir, &poll_result);
+        if (result < 0) {
+                printk(KERN_INFO "ir->get_key() failed %d\n", result);
+                return;
+        }
+
+        dprintk("ir->get_key result data=%02x %02x\n",
+                poll_result.rc_data[0], poll_result.rc_data[1]);
+
+        if (poll_result.rc_data[0] != 0xff && ir->key == 1) {
+                ir_input_keydown(ir->input->input_dev, &ir->ir,
+                        poll_result.rc_data[0] | poll_result.rc_data[1] << 8);
+
+                ir_input_nokey(ir->input->input_dev, &ir->ir);
+                ir->key = 0;
+        }
+        return;
+}
+
+static void tm6000_ir_work(struct work_struct *work)
+{
+        struct tm6000_IR *ir = container_of(work, struct tm6000_IR, work.work);
+
+        tm6000_ir_handle_key(ir);
+        schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling));
+}
+
+static int tm6000_ir_start(void *priv)
+{
+        struct tm6000_IR *ir = priv;
+
+        INIT_DELAYED_WORK(&ir->work, tm6000_ir_work);
+        schedule_delayed_work(&ir->work, 0);
+
+        return 0;
+}
+
+static void tm6000_ir_stop(void *priv)
+{
+        struct tm6000_IR *ir = priv;
+
+        cancel_delayed_work_sync(&ir->work);
+}
+
+int tm6000_ir_change_protocol(void *priv, u64 ir_type)
+{
+        struct tm6000_IR *ir = priv;
+
+        ir->get_key = default_polling_getkey;
+
+        tm6000_ir_config(ir);
+        /* TODO */
+        return 0;
+}
+
+int tm6000_ir_init(struct tm6000_core *dev)
+{
+        struct tm6000_IR *ir;
+        struct ir_input_dev *ir_input_dev;
+        int err = -ENOMEM;
+        int pipe, size, rc;
+
+        if (!enable_ir)
+                return -ENODEV;
+
+        if (!dev->caps.has_remote)
+                return 0;
+
+        if (!dev->ir_codes)
+                return 0;
+
+        ir = kzalloc(sizeof(*ir), GFP_KERNEL);
+        ir_input_dev = kzalloc(sizeof(*ir_input_dev), GFP_KERNEL);
+        ir_input_dev->input_dev = input_allocate_device();
+        if (!ir || !ir_input_dev || !ir_input_dev->input_dev)
+                goto err_out_free;
+
+        /* record handles to ourself */
+        ir->dev = dev;
+        dev->ir = ir;
+
+        ir->input = ir_input_dev;
+
+        /* input einrichten */
+        ir->props.allowed_protos = IR_TYPE_RC5 | IR_TYPE_NEC;
+        ir->props.priv = ir;
+        ir->props.change_protocol = tm6000_ir_change_protocol;
+        ir->props.open = tm6000_ir_start;
+        ir->props.close = tm6000_ir_stop;
+        ir->props.driver_type = RC_DRIVER_SCANCODE;
+
+        ir->polling = 50;
+
+        snprintf(ir->name, sizeof(ir->name), "tm5600/60x0 IR (%s)",
+                                                dev->name);
+
+        usb_make_path(dev->udev, ir->phys, sizeof(ir->phys));
+        strlcat(ir->phys, "/input0", sizeof(ir->phys));
+
+        tm6000_ir_change_protocol(ir, IR_TYPE_UNKNOWN);
+        err = ir_input_init(ir_input_dev->input_dev, &ir->ir, IR_TYPE_OTHER);
+        if (err < 0)
+                goto err_out_free;
+
+        ir_input_dev->input_dev->name = ir->name;
+        ir_input_dev->input_dev->phys = ir->phys;
+        ir_input_dev->input_dev->id.bustype = BUS_USB;
+        ir_input_dev->input_dev->id.version = 1;
+        ir_input_dev->input_dev->id.vendor = le16_to_cpu(dev->udev->descriptor.idVendor);
+        ir_input_dev->input_dev->id.product = le16_to_cpu(dev->udev->descriptor.idProduct);
+
+        ir_input_dev->input_dev->dev.parent = &dev->udev->dev;
+
+        if (&dev->int_in) {
+                dprintk("IR over int\n");
+
+                ir->int_urb = usb_alloc_urb(0, GFP_KERNEL);
+
+                pipe = usb_rcvintpipe(dev->udev,
+                        dev->int_in.endp->desc.bEndpointAddress
+                        & USB_ENDPOINT_NUMBER_MASK);
+
+                size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
+                dprintk("IR max size: %d\n", size);
+
+                ir->int_urb->transfer_buffer = kzalloc(size, GFP_KERNEL);
+                if (ir->int_urb->transfer_buffer == NULL) {
+                        usb_free_urb(ir->int_urb);
+                        goto err_out_stop;
+                }
+                dprintk("int interval: %d\n", dev->int_in.endp->desc.bInterval);
+                usb_fill_int_urb(ir->int_urb, dev->udev, pipe,
+                        ir->int_urb->transfer_buffer, size,
+                        tm6000_ir_urb_received, dev,
+                        dev->int_in.endp->desc.bInterval);
+                rc = usb_submit_urb(ir->int_urb, GFP_KERNEL);
+                if (rc) {
+                        kfree(ir->int_urb->transfer_buffer);
+                        usb_free_urb(ir->int_urb);
+                        err = rc;
+                        goto err_out_stop;
+                }
+                ir->urb_data = kzalloc(size, GFP_KERNEL);
+        }
+
+        /* ir register */
+        err = ir_input_register(ir->input->input_dev, dev->ir_codes,
+                &ir->props, "tm6000");
+        if (err)
+                goto err_out_stop;
+
+        return 0;
+
+err_out_stop:
+        dev->ir = NULL;
+err_out_free:
+        kfree(ir_input_dev);
+        kfree(ir);
+        return err;
+}
+
+int tm6000_ir_fini(struct tm6000_core *dev)
+{
+        struct tm6000_IR *ir = dev->ir;
+
+        /* skip detach on non attached board */
+
+        if (!ir)
+                return 0;
+
+        ir_input_unregister(ir->input->input_dev);
+
+        if (ir->int_urb) {
+                usb_kill_urb(ir->int_urb);
+                kfree(ir->int_urb->transfer_buffer);
+                usb_free_urb(ir->int_urb);
+                ir->int_urb = NULL;
+                kfree(ir->urb_data);
+                ir->urb_data = NULL;
+        }
+
+        kfree(ir->input);
+        ir->input = NULL;
+        kfree(ir);
+        dev->ir = NULL;
+
+        return 0;
+}
diff --git a/drivers/staging/tm6000/tm6000.h b/drivers/staging/tm6000/tm6000.h
index 89862a49520..1ec1bff9b29 100644
--- a/drivers/staging/tm6000/tm6000.h
+++ b/drivers/staging/tm6000/tm6000.h
@@ -171,6 +171,8 @@ struct tm6000_core {
 
         struct tm6000_gpio              gpio;
 
+        char                            *ir_codes;
+
         /* Demodulator configuration */
         int                             demod_addr;     /* demodulator address */
 
@@ -204,6 +206,8 @@ struct tm6000_core {
         /* audio support */
         struct snd_tm6000_card          *adev;
 
+        struct tm6000_IR                *ir;
+
         /* locks */
         struct mutex                    lock;
 
@@ -211,6 +215,7 @@ struct tm6000_core {
         struct usb_device               *udev;          /* the usb device */
 
         struct tm6000_endpoint          bulk_in, bulk_out, isoc_in, isoc_out;
+        struct tm6000_endpoint          int_in, int_out;
 
         /* scaler!=0 if scaler is active*/
         int                             scaler;
@@ -317,6 +322,10 @@ int tm6000_queue_init(struct tm6000_core *dev);
 /* In tm6000-alsa.c */
 /*int tm6000_audio_init(struct tm6000_core *dev, int idx);*/
 
+/* In tm6000-input.c */
+int tm6000_ir_init(struct tm6000_core *dev);
+int tm6000_ir_fini(struct tm6000_core *dev);
+void tm6000_ir_wait(struct tm6000_core *dev, u8 state);
 
 /* Debug stuff */