diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0880-Bluetooth-btbcm-Support-pcm-configuration.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0880-Bluetooth-btbcm-Support-pcm-configuration.patch | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0880-Bluetooth-btbcm-Support-pcm-configuration.patch b/target/linux/bcm27xx/patches-5.4/950-0880-Bluetooth-btbcm-Support-pcm-configuration.patch new file mode 100644 index 0000000000..2d40e7f5ac --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0880-Bluetooth-btbcm-Support-pcm-configuration.patch @@ -0,0 +1,124 @@ +From 6631d2076af26d2b5b6a3a2f17e8a33de48abcac Mon Sep 17 00:00:00 2001 +From: Abhishek Pandit-Subedi <abhishekpandit@chromium.org> +Date: Tue, 26 Nov 2019 08:17:30 +0100 +Subject: [PATCH] Bluetooth: btbcm: Support pcm configuration + +commit 528379902337102b0264fe5343eafb3d6c59fa45 upstream. + +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> +--- + drivers/bluetooth/btbcm.c | 46 +++++++++++++++++++++++++++++++++++++++ + drivers/bluetooth/btbcm.h | 16 ++++++++++++++ + 2 files changed, 62 insertions(+) + +--- a/drivers/bluetooth/btbcm.c ++++ b/drivers/bluetooth/btbcm.c +@@ -105,6 +105,52 @@ int btbcm_set_bdaddr(struct hci_dev *hde + } + EXPORT_SYMBOL_GPL(btbcm_set_bdaddr); + ++int btbcm_read_pcm_int_params(struct hci_dev *hdev, ++ struct bcm_set_pcm_int_params *params) ++{ ++ struct sk_buff *skb; ++ int err = 0; ++ ++ skb = __hci_cmd_sync(hdev, 0xfc1d, 0, NULL, HCI_INIT_TIMEOUT); ++ if (IS_ERR(skb)) { ++ err = PTR_ERR(skb); ++ bt_dev_err(hdev, "BCM: Read PCM int params failed (%d)", err); ++ return err; ++ } ++ ++ if (skb->len != 6 || skb->data[0]) { ++ bt_dev_err(hdev, "BCM: Read PCM int params length mismatch"); ++ kfree_skb(skb); ++ return -EIO; ++ } ++ ++ if (params) ++ memcpy(params, skb->data + 1, 5); ++ ++ kfree_skb(skb); ++ ++ return 0; ++} ++EXPORT_SYMBOL_GPL(btbcm_read_pcm_int_params); ++ ++int btbcm_write_pcm_int_params(struct hci_dev *hdev, ++ const struct bcm_set_pcm_int_params *params) ++{ ++ struct sk_buff *skb; ++ int err; ++ ++ skb = __hci_cmd_sync(hdev, 0xfc1c, 5, params, HCI_INIT_TIMEOUT); ++ if (IS_ERR(skb)) { ++ err = PTR_ERR(skb); ++ bt_dev_err(hdev, "BCM: Write PCM int params failed (%d)", err); ++ return err; ++ } ++ kfree_skb(skb); ++ ++ return 0; ++} ++EXPORT_SYMBOL_GPL(btbcm_write_pcm_int_params); ++ + int btbcm_patchram(struct hci_dev *hdev, const struct firmware *fw) + { + const struct hci_command_hdr *cmd; +--- a/drivers/bluetooth/btbcm.h ++++ b/drivers/bluetooth/btbcm.h +@@ -54,6 +54,10 @@ struct bcm_set_pcm_format_params { + int btbcm_check_bdaddr(struct hci_dev *hdev); + int btbcm_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr); + int btbcm_patchram(struct hci_dev *hdev, const struct firmware *fw); ++int btbcm_read_pcm_int_params(struct hci_dev *hdev, ++ struct bcm_set_pcm_int_params *params); ++int btbcm_write_pcm_int_params(struct hci_dev *hdev, ++ const struct bcm_set_pcm_int_params *params); + + int btbcm_setup_patchram(struct hci_dev *hdev); + int btbcm_setup_apple(struct hci_dev *hdev); +@@ -73,6 +77,18 @@ static inline int btbcm_set_bdaddr(struc + { + return -EOPNOTSUPP; + } ++ ++int btbcm_read_pcm_int_params(struct hci_dev *hdev, ++ struct bcm_set_pcm_int_params *params) ++{ ++ return -EOPNOTSUPP; ++} ++ ++int btbcm_write_pcm_int_params(struct hci_dev *hdev, ++ const struct bcm_set_pcm_int_params *params) ++{ ++ return -EOPNOTSUPP; ++} + + static inline int btbcm_patchram(struct hci_dev *hdev, const struct firmware *fw) + { |