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staging: most: hdm-usb: introduce synchronization function
This patch introduces the function start_sync_ep() and relocates the triggers for synchronization to this function. Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de> Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -182,6 +182,11 @@ static inline int drci_wr_reg(struct usb_device *dev, u16 reg, u16 data)
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5 * HZ);
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}
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static inline int start_sync_ep(struct usb_device *usb_dev, u16 ep)
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{
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return drci_wr_reg(usb_dev, DRCI_REG_BASE + DRCI_COMMAND + ep * 16, 1);
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}
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/**
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* get_stream_frame_size - calculate frame size of current configuration
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* @cfg: channel configuration
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@ -697,11 +702,8 @@ exit:
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mdev->conf[channel] = *conf;
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if (conf->data_type == MOST_CH_ASYNC) {
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u16 ep = mdev->ep_address[channel];
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int err = drci_wr_reg(mdev->usb_device,
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DRCI_REG_BASE + DRCI_COMMAND + ep * 16,
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1);
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if (err < 0)
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if (start_sync_ep(mdev->usb_device, ep) < 0)
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dev_warn(dev, "sync for ep%02x failed", ep);
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}
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return 0;
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@ -987,6 +989,7 @@ static ssize_t store_value(struct most_dci_obj *dci_obj,
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u16 val;
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u16 reg_addr;
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const char *name = attr->attr.name;
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struct usb_device *usb_dev = dci_obj->usb_device;
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int err = kstrtou16(buf, 16, &val);
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if (err)
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@ -997,18 +1000,15 @@ static ssize_t store_value(struct most_dci_obj *dci_obj,
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return count;
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}
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if (!strcmp(name, "arb_value")) {
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reg_addr = dci_obj->reg_addr;
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} else if (!strcmp(name, "sync_ep")) {
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u16 ep = val;
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reg_addr = DRCI_REG_BASE + DRCI_COMMAND + ep * 16;
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val = 1;
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} else if (get_static_reg_addr(ro_regs, name, ®_addr)) {
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if (!strcmp(name, "arb_value"))
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err = drci_wr_reg(usb_dev, dci_obj->reg_addr, val);
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else if (!strcmp(name, "sync_ep"))
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err = start_sync_ep(usb_dev, val);
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else if (!get_static_reg_addr(ro_regs, name, ®_addr))
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err = drci_wr_reg(usb_dev, reg_addr, val);
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else
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return -EFAULT;
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}
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err = drci_wr_reg(dci_obj->usb_device, reg_addr, val);
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if (err < 0)
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return err;
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