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Bluetooth: btintel_pcie: Introduce HCI Driver protocol 

This patch adds the infrastructure that allow the user space program to
talk to intel pcie driver directly for fetching basic driver details.

The changes introduced are referred form
commit 04425292a6 ("Bluetooth: Introduce HCI Driver protocol")

Signed-off-by: Chethan T N <chethan.tumkur.narayan@intel.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This commit is contained in:
Chethan T N 2025-11-07 11:10:11 +05:30 committed by Luiz Augusto von Dentz
parent a8b38d1985
commit bc6f557b33
1 changed files with 59 additions and 0 deletions
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59
drivers/bluetooth/btintel_pcie.c
View File

@ -19,6 +19,7 @@
#include <net/bluetooth/bluetooth.h> #include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h> #include <net/bluetooth/hci_core.h>
#include <net/bluetooth/hci_drv.h>
#include "btintel.h" #include "btintel.h"
#include "btintel_pcie.h" #include "btintel_pcie.h"
@ -2360,6 +2361,63 @@ static bool btintel_pcie_wakeup(struct hci_dev *hdev)
return device_may_wakeup(&data->pdev->dev); return device_may_wakeup(&data->pdev->dev);
} }
static const struct {
u16 opcode;
const char *desc;
} btintel_pcie_hci_drv_supported_commands[] = {
/* Common commands */
{ HCI_DRV_OP_READ_INFO, "Read Info" },
};
static int btintel_pcie_hci_drv_read_info(struct hci_dev *hdev, void *data,
u16 data_len)
{
struct hci_drv_rp_read_info *rp;
size_t rp_size;
int err, i;
u16 opcode, num_supported_commands =
ARRAY_SIZE(btintel_pcie_hci_drv_supported_commands);
rp_size = sizeof(*rp) + num_supported_commands * 2;
rp = kmalloc(rp_size, GFP_KERNEL);
if (!rp)
return -ENOMEM;
strscpy_pad(rp->driver_name, KBUILD_MODNAME);
rp->num_supported_commands = cpu_to_le16(num_supported_commands);
for (i = 0; i < num_supported_commands; i++) {
opcode = btintel_pcie_hci_drv_supported_commands[i].opcode;
bt_dev_dbg(hdev,
"Supported HCI Drv command (0x%02x|0x%04x): %s",
hci_opcode_ogf(opcode),
hci_opcode_ocf(opcode),
btintel_pcie_hci_drv_supported_commands[i].desc);
rp->supported_commands[i] = cpu_to_le16(opcode);
}
err = hci_drv_cmd_complete(hdev, HCI_DRV_OP_READ_INFO,
HCI_DRV_STATUS_SUCCESS,
rp, rp_size);
kfree(rp);
return err;
}
static const struct hci_drv_handler btintel_pcie_hci_drv_common_handlers[] = {
{ btintel_pcie_hci_drv_read_info, HCI_DRV_READ_INFO_SIZE },
};
static const struct hci_drv_handler btintel_pcie_hci_drv_specific_handlers[] = {};
static struct hci_drv btintel_pcie_hci_drv = {
.common_handler_count = ARRAY_SIZE(btintel_pcie_hci_drv_common_handlers),
.common_handlers = btintel_pcie_hci_drv_common_handlers,
.specific_handler_count = ARRAY_SIZE(btintel_pcie_hci_drv_specific_handlers),
.specific_handlers = btintel_pcie_hci_drv_specific_handlers,
};
static int btintel_pcie_setup_hdev(struct btintel_pcie_data *data) static int btintel_pcie_setup_hdev(struct btintel_pcie_data *data)
{ {
int err; int err;
@ -2386,6 +2444,7 @@ static int btintel_pcie_setup_hdev(struct btintel_pcie_data *data)
hdev->set_bdaddr = btintel_set_bdaddr; hdev->set_bdaddr = btintel_set_bdaddr;
hdev->reset = btintel_pcie_reset; hdev->reset = btintel_pcie_reset;
hdev->wakeup = btintel_pcie_wakeup; hdev->wakeup = btintel_pcie_wakeup;
hdev->hci_drv = &btintel_pcie_hci_drv;
err = hci_register_dev(hdev); err = hci_register_dev(hdev);
if (err < 0) { if (err < 0) {