1 files changed, 539 insertions, 0 deletions

diff --git a/drivers/media/video/tlg2300/pd-main.c b/drivers/media/video/tlg2300/pd-main.c
new file mode 100644
index 000000000000..2cf0ebf9f28b
--- /dev/null
+++ b/drivers/media/video/tlg2300/pd-main.c
@@ -0,0 +1,539 @@
+/*
+ * device driver for Telegent tlg2300 based TV cards
+ *
+ * Author :
+ *      Kang Yong       <kangyong@telegent.com>
+ *      Zhang Xiaobing  <xbzhang@telegent.com>
+ *      Huang Shijie    <zyziii@telegent.com> or <shijie8@gmail.com>
+ *
+ *      (c) 2009 Telegent Systems
+ *      (c) 2010 Telegent Systems
+ *
+ *  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/version.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/kref.h>
+#include <linux/suspend.h>
+#include <linux/usb/quirks.h>
+#include <linux/ctype.h>
+#include <linux/string.h>
+#include <linux/types.h>
+#include <linux/firmware.h>
+#include <linux/smp_lock.h>
+
+#include "vendorcmds.h"
+#include "pd-common.h"
+
+#define VENDOR_ID       0x1B24
+#define PRODUCT_ID      0x4001
+static struct usb_device_id id_table[] = {
+        { USB_DEVICE_AND_INTERFACE_INFO(VENDOR_ID, PRODUCT_ID, 255, 1, 0) },
+        { USB_DEVICE_AND_INTERFACE_INFO(VENDOR_ID, PRODUCT_ID, 255, 1, 1) },
+        { },
+};
+MODULE_DEVICE_TABLE(usb, id_table);
+
+int debug_mode;
+module_param(debug_mode, int, 0644);
+MODULE_PARM_DESC(debug_mode, "0 = disable, 1 = enable, 2 = verbose");
+
+const char *firmware_name = "tlg2300_firmware.bin";
+struct usb_driver poseidon_driver;
+static LIST_HEAD(pd_device_list);
+
+/*
+ * send set request to USB firmware.
+ */
+s32 send_set_req(struct poseidon *pd, u8 cmdid, s32 param, s32 *cmd_status)
+{
+        s32 ret;
+        s8  data[32] = {};
+        u16 lower_16, upper_16;
+
+        if (pd->state & POSEIDON_STATE_DISCONNECT)
+                return -ENODEV;
+
+        mdelay(30);
+
+        if (param == 0) {
+                upper_16 = lower_16 = 0;
+        } else {
+                /* send 32 bit param as  two 16 bit param,little endian */
+                lower_16 = (unsigned short)(param & 0xffff);
+                upper_16 = (unsigned short)((param >> 16) & 0xffff);
+        }
+        ret = usb_control_msg(pd->udev,
+                         usb_rcvctrlpipe(pd->udev, 0),
+                         REQ_SET_CMD | cmdid,
+                         USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+                         lower_16,
+                         upper_16,
+                         &data,
+                         sizeof(*cmd_status),
+                         USB_CTRL_GET_TIMEOUT);
+
+        if (!ret) {
+                return -ENXIO;
+        } else {
+                /*  1st 4 bytes into cmd_status   */
+                memcpy((char *)cmd_status, &(data[0]), sizeof(*cmd_status));
+        }
+        return 0;
+}
+
+/*
+ * send get request to Poseidon firmware.
+ */
+s32 send_get_req(struct poseidon *pd, u8 cmdid, s32 param,
+                        void *buf, s32 *cmd_status, s32 datalen)
+{
+        s32 ret;
+        s8 data[128] = {};
+        u16 lower_16, upper_16;
+
+        if (pd->state & POSEIDON_STATE_DISCONNECT)
+                return -ENODEV;
+
+        mdelay(30);
+        if (param == 0) {
+                upper_16 = lower_16 = 0;
+        } else {
+                /*send 32 bit param as two 16 bit param, little endian */
+                lower_16 = (unsigned short)(param & 0xffff);
+                upper_16 = (unsigned short)((param >> 16) & 0xffff);
+        }
+        ret = usb_control_msg(pd->udev,
+                         usb_rcvctrlpipe(pd->udev, 0),
+                         REQ_GET_CMD | cmdid,
+                         USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+                         lower_16,
+                         upper_16,
+                         &data,
+                         (datalen + sizeof(*cmd_status)),
+                         USB_CTRL_GET_TIMEOUT);
+
+        if (ret < 0) {
+                return -ENXIO;
+        } else {
+                /* 1st 4 bytes into cmd_status, remaining data into cmd_data */
+                memcpy((char *)cmd_status, &data[0], sizeof(*cmd_status));
+                memcpy((char *)buf, &data[sizeof(*cmd_status)], datalen);
+        }
+        return 0;
+}
+
+static int pm_notifier_block(struct notifier_block *nb,
+                                unsigned long event, void *dummy)
+{
+        struct poseidon *pd = NULL;
+        struct list_head *node, *next;
+
+        switch (event) {
+        case PM_POST_HIBERNATION:
+                list_for_each_safe(node, next, &pd_device_list) {
+                        struct usb_device *udev;
+                        struct usb_interface *iface;
+                        int rc = 0;
+
+                        pd = container_of(node, struct poseidon, device_list);
+                        udev = pd->udev;
+                        iface = pd->interface;
+
+                        /* It will cause the system to reload the firmware */
+                        rc = usb_lock_device_for_reset(udev, iface);
+                        if (rc >= 0) {
+                                usb_reset_device(udev);
+                                usb_unlock_device(udev);
+                        }
+                }
+                break;
+        default:
+                break;
+        }
+        log("event :%ld\n", event);
+        return 0;
+}
+
+static struct notifier_block pm_notifer = {
+        .notifier_call = pm_notifier_block,
+};
+
+int set_tuner_mode(struct poseidon *pd, unsigned char mode)
+{
+        s32 ret, cmd_status;
+
+        if (pd->state & POSEIDON_STATE_DISCONNECT)
+                return -ENODEV;
+
+        ret = send_set_req(pd, TUNE_MODE_SELECT, mode, &cmd_status);
+        if (ret || cmd_status)
+                return -ENXIO;
+        return 0;
+}
+
+void poseidon_delete(struct kref *kref)
+{
+        struct poseidon *pd = container_of(kref, struct poseidon, kref);
+
+        if (!pd)
+                return;
+        list_del_init(&pd->device_list);
+
+        pd_dvb_usb_device_cleanup(pd);
+        /* clean_audio_data(&pd->audio_data);*/
+
+        if (pd->udev) {
+                usb_put_dev(pd->udev);
+                pd->udev = NULL;
+        }
+        if (pd->interface) {
+                usb_put_intf(pd->interface);
+                pd->interface = NULL;
+        }
+        kfree(pd);
+        log();
+}
+
+static int firmware_download(struct usb_device *udev)
+{
+        int ret = 0, actual_length;
+        const struct firmware *fw = NULL;
+        void *fwbuf = NULL;
+        size_t fwlength = 0, offset;
+        size_t max_packet_size;
+
+        ret = request_firmware(&fw, firmware_name, &udev->dev);
+        if (ret) {
+                log("download err : %d", ret);
+                return ret;
+        }
+
+        fwlength = fw->size;
+
+        fwbuf = kzalloc(fwlength, GFP_KERNEL);
+        if (!fwbuf) {
+                ret = -ENOMEM;
+                goto out;
+        }
+        memcpy(fwbuf, fw->data, fwlength);
+
+        max_packet_size = udev->ep_out[0x1]->desc.wMaxPacketSize;
+        log("\t\t download size : %d", (int)max_packet_size);
+
+        for (offset = 0; offset < fwlength; offset += max_packet_size) {
+                actual_length = 0;
+                ret = usb_bulk_msg(udev,
+                                usb_sndbulkpipe(udev, 0x01), /* ep 1 */
+                                fwbuf + offset,
+                                min(max_packet_size, fwlength - offset),
+                                &actual_length,
+                                HZ * 10);
+                if (ret)
+                        break;
+        }
+        kfree(fwbuf);
+out:
+        release_firmware(fw);
+        return ret;
+}
+
+static inline struct poseidon *get_pd(struct usb_interface *intf)
+{
+        return usb_get_intfdata(intf);
+}
+
+#ifdef CONFIG_PM
+/* one-to-one map : poseidon{} <----> usb_device{}'s port */
+static inline void set_map_flags(struct poseidon *pd, struct usb_device *udev)
+{
+        pd->portnum = udev->portnum;
+}
+
+static inline int get_autopm_ref(struct poseidon *pd)
+{
+        return  pd->video_data.users + pd->vbi_data.users + pd->audio.users
+                + atomic_read(&pd->dvb_data.users) + pd->radio_data.users;
+}
+
+/* fixup something for poseidon */
+static inline struct poseidon *fixup(struct poseidon *pd)
+{
+        int count;
+
+        /* old udev and interface have gone, so put back reference . */
+        count = get_autopm_ref(pd);
+        log("count : %d, ref count : %d", count, get_pm_count(pd));
+        while (count--)
+                usb_autopm_put_interface(pd->interface);
+        /*usb_autopm_set_interface(pd->interface); */
+
+        usb_put_dev(pd->udev);
+        usb_put_intf(pd->interface);
+        log("event : %d\n", pd->msg.event);
+        return pd;
+}
+
+static struct poseidon *find_old_poseidon(struct usb_device *udev)
+{
+        struct poseidon *pd;
+
+        list_for_each_entry(pd, &pd_device_list, device_list) {
+                if (pd->portnum == udev->portnum && in_hibernation(pd))
+                        return fixup(pd);
+        }
+        return NULL;
+}
+
+/* Is the card working now ? */
+static inline int is_working(struct poseidon *pd)
+{
+        return get_pm_count(pd) > 0;
+}
+
+static int poseidon_suspend(struct usb_interface *intf, pm_message_t msg)
+{
+        struct poseidon *pd = get_pd(intf);
+
+        if (!pd)
+                return 0;
+        if (!is_working(pd)) {
+                if (get_pm_count(pd) <= 0 && !in_hibernation(pd)) {
+                        pd->msg.event = PM_EVENT_AUTO_SUSPEND;
+                        pd->pm_resume = NULL; /*  a good guard */
+                        printk(KERN_DEBUG "\n\t+ TLG2300 auto suspend +\n\n");
+                }
+                return 0;
+        }
+        pd->msg = msg; /* save it here */
+        logpm(pd);
+        return pd->pm_suspend ? pd->pm_suspend(pd) : 0;
+}
+
+static int poseidon_resume(struct usb_interface *intf)
+{
+        struct poseidon *pd = get_pd(intf);
+
+        if (!pd)
+                return 0;
+        printk(KERN_DEBUG "\n\t ++ TLG2300 resume ++\n\n");
+
+        if (!is_working(pd)) {
+                if (PM_EVENT_AUTO_SUSPEND == pd->msg.event)
+                        pd->msg = PMSG_ON;
+                return 0;
+        }
+        if (in_hibernation(pd)) {
+                logpm(pd);
+                return 0;
+        }
+        logpm(pd);
+        return pd->pm_resume ? pd->pm_resume(pd) : 0;
+}
+
+static void hibernation_resume(struct work_struct *w)
+{
+        struct poseidon *pd = container_of(w, struct poseidon, pm_work);
+        int count;
+
+        pd->msg.event = 0; /* clear it here */
+        pd->state &= ~POSEIDON_STATE_DISCONNECT;
+
+        /* set the new interface's reference */
+        count = get_autopm_ref(pd);
+        while (count--)
+                usb_autopm_get_interface(pd->interface);
+
+        /* resume the context */
+        logpm(pd);
+        if (pd->pm_resume)
+                pd->pm_resume(pd);
+}
+#else /* CONFIG_PM is not enabled: */
+static inline struct poseidon *find_old_poseidon(struct usb_device *udev)
+{
+        return NULL;
+}
+
+static inline void set_map_flags(struct poseidon *pd, struct usb_device *udev)
+{
+}
+#endif
+
+static bool check_firmware(struct usb_device *udev, int *down_firmware)
+{
+        void *buf;
+        int ret;
+        struct cmd_firmware_vers_s *cmd_firm;
+
+        buf = kzalloc(sizeof(*cmd_firm) + sizeof(u32), GFP_KERNEL);
+        if (!buf)
+                return -ENOMEM;
+        ret = usb_control_msg(udev,
+                         usb_rcvctrlpipe(udev, 0),
+                         REQ_GET_CMD | GET_FW_ID,
+                         USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+                         0,
+                         0,
+                         buf,
+                         sizeof(*cmd_firm) + sizeof(u32),
+                         USB_CTRL_GET_TIMEOUT);
+        kfree(buf);
+
+        if (ret < 0) {
+                *down_firmware = 1;
+                return firmware_download(udev);
+        }
+        return ret;
+}
+
+static int poseidon_probe(struct usb_interface *interface,
+                                const struct usb_device_id *id)
+{
+        struct usb_device *udev = interface_to_usbdev(interface);
+        struct poseidon *pd = NULL;
+        int ret = 0;
+        int new_one = 0;
+
+        /* download firmware */
+        check_firmware(udev, &ret);
+        if (ret)
+                return 0;
+
+        /* Do I recovery from the hibernate ? */
+        pd = find_old_poseidon(udev);
+        if (!pd) {
+                pd = kzalloc(sizeof(*pd), GFP_KERNEL);
+                if (!pd)
+                        return -ENOMEM;
+                kref_init(&pd->kref);
+                set_map_flags(pd, udev);
+                new_one = 1;
+        }
+
+        pd->udev        = usb_get_dev(udev);
+        pd->interface   = usb_get_intf(interface);
+        usb_set_intfdata(interface, pd);
+
+        if (new_one) {
+                struct device *dev = &interface->dev;
+
+                logpm(pd);
+                mutex_init(&pd->lock);
+
+                /* register v4l2 device */
+                snprintf(pd->v4l2_dev.name, sizeof(pd->v4l2_dev.name), "%s %s",
+                        dev->driver->name, dev_name(dev));
+                ret = v4l2_device_register(NULL, &pd->v4l2_dev);
+
+                /* register devices in directory /dev */
+                ret = pd_video_init(pd);
+                poseidon_audio_init(pd);
+                poseidon_fm_init(pd);
+                pd_dvb_usb_device_init(pd);
+
+                INIT_LIST_HEAD(&pd->device_list);
+                list_add_tail(&pd->device_list, &pd_device_list);
+        }
+
+        device_init_wakeup(&udev->dev, 1);
+#ifdef CONFIG_PM
+        pd->udev->autosuspend_disabled = 0;
+        pd->udev->autosuspend_delay = HZ * PM_SUSPEND_DELAY;
+
+        if (in_hibernation(pd)) {
+                INIT_WORK(&pd->pm_work, hibernation_resume);
+                schedule_work(&pd->pm_work);
+        }
+#endif
+        return 0;
+}
+
+static void poseidon_disconnect(struct usb_interface *interface)
+{
+        struct poseidon *pd = get_pd(interface);
+
+        if (!pd)
+                return;
+        logpm(pd);
+        if (in_hibernation(pd))
+                return;
+
+        mutex_lock(&pd->lock);
+        pd->state |= POSEIDON_STATE_DISCONNECT;
+        mutex_unlock(&pd->lock);
+
+        /* stop urb transferring */
+        stop_all_video_stream(pd);
+        dvb_stop_streaming(&pd->dvb_data);
+
+        /*unregister v4l2 device */
+        v4l2_device_unregister(&pd->v4l2_dev);
+
+        lock_kernel();
+        {
+                pd_dvb_usb_device_exit(pd);
+                poseidon_fm_exit(pd);
+
+                poseidon_audio_free(pd);
+                pd_video_exit(pd);
+        }
+        unlock_kernel();
+
+        usb_set_intfdata(interface, NULL);
+        kref_put(&pd->kref, poseidon_delete);
+}
+
+struct usb_driver poseidon_driver = {
+        .name           = "poseidon",
+        .probe          = poseidon_probe,
+        .disconnect     = poseidon_disconnect,
+        .id_table       = id_table,
+#ifdef CONFIG_PM
+        .suspend        = poseidon_suspend,
+        .resume         = poseidon_resume,
+#endif
+        .supports_autosuspend = 1,
+};
+
+static int __init poseidon_init(void)
+{
+        int ret;
+
+        ret = usb_register(&poseidon_driver);
+        if (ret)
+                return ret;
+        register_pm_notifier(&pm_notifer);
+        return ret;
+}
+
+static void __exit poseidon_exit(void)
+{
+        log();
+        unregister_pm_notifier(&pm_notifer);
+        usb_deregister(&poseidon_driver);
+}
+
+module_init(poseidon_init);
+module_exit(poseidon_exit);
+
+MODULE_AUTHOR("Telegent Systems");
+MODULE_DESCRIPTION("For tlg2300-based USB device ");
+MODULE_LICENSE("GPL");