mirror of https://gitee.com/openkylin/linux.git
Bluetooth: btbcm: Support pcm configuration
Add BCM vendor specific command to configure PCM parameters. The new vendor opcode allows us to set the sco routing, the pcm interface rate, and a few other pcm specific options (frame sync, sync mode, and clock mode). See broadcom-bluetooth.txt in Documentation for more information about valid values for those settings. Here is an example trace where this opcode was used to configure a BCM4354: < HCI Command: Vendor (0x3f|0x001c) plen 5 01 02 00 01 01 > HCI Event: Command Complete (0x0e) plen 4 Vendor (0x3f|0x001c) ncmd 1 Status: Success (0x00) We can read back the values as well with ocf 0x001d to confirm the values that were set: $ hcitool cmd 0x3f 0x001d < HCI Command: ogf 0x3f, ocf 0x001d, plen 0 > HCI Event: 0x0e plen 9 01 1D FC 00 01 02 00 01 01 Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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@ -107,6 +107,52 @@ int btbcm_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
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}
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EXPORT_SYMBOL_GPL(btbcm_set_bdaddr);
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int btbcm_read_pcm_int_params(struct hci_dev *hdev,
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struct bcm_set_pcm_int_params *params)
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{
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struct sk_buff *skb;
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int err = 0;
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skb = __hci_cmd_sync(hdev, 0xfc1d, 0, NULL, HCI_INIT_TIMEOUT);
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if (IS_ERR(skb)) {
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err = PTR_ERR(skb);
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bt_dev_err(hdev, "BCM: Read PCM int params failed (%d)", err);
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return err;
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}
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if (skb->len != 6 || skb->data[0]) {
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bt_dev_err(hdev, "BCM: Read PCM int params length mismatch");
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kfree_skb(skb);
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return -EIO;
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}
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if (params)
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memcpy(params, skb->data + 1, 5);
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kfree_skb(skb);
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return 0;
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}
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EXPORT_SYMBOL_GPL(btbcm_read_pcm_int_params);
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int btbcm_write_pcm_int_params(struct hci_dev *hdev,
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const struct bcm_set_pcm_int_params *params)
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{
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struct sk_buff *skb;
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int err;
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skb = __hci_cmd_sync(hdev, 0xfc1c, 5, params, HCI_INIT_TIMEOUT);
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if (IS_ERR(skb)) {
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err = PTR_ERR(skb);
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bt_dev_err(hdev, "BCM: Write PCM int params failed (%d)", err);
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return err;
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}
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kfree_skb(skb);
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return 0;
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}
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EXPORT_SYMBOL_GPL(btbcm_write_pcm_int_params);
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int btbcm_patchram(struct hci_dev *hdev, const struct firmware *fw)
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{
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const struct hci_command_hdr *cmd;
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@ -54,6 +54,10 @@ struct bcm_set_pcm_format_params {
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int btbcm_check_bdaddr(struct hci_dev *hdev);
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int btbcm_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr);
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int btbcm_patchram(struct hci_dev *hdev, const struct firmware *fw);
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int btbcm_read_pcm_int_params(struct hci_dev *hdev,
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struct bcm_set_pcm_int_params *params);
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int btbcm_write_pcm_int_params(struct hci_dev *hdev,
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const struct bcm_set_pcm_int_params *params);
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int btbcm_setup_patchram(struct hci_dev *hdev);
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int btbcm_setup_apple(struct hci_dev *hdev);
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@ -74,6 +78,18 @@ static inline int btbcm_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
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return -EOPNOTSUPP;
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}
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int btbcm_read_pcm_int_params(struct hci_dev *hdev,
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struct bcm_set_pcm_int_params *params)
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{
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return -EOPNOTSUPP;
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}
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int btbcm_write_pcm_int_params(struct hci_dev *hdev,
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const struct bcm_set_pcm_int_params *params)
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{
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return -EOPNOTSUPP;
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}
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static inline int btbcm_patchram(struct hci_dev *hdev, const struct firmware *fw)
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{
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return -EOPNOTSUPP;
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