Hi Hans,
> The Realtek RTL8723BS and RTL8723DS chipsets are SDIO wifi chips. They
> also contain a Bluetooth module which is connected via UART to the host.
>
> Realtek's userspace initialization tool (rtk_hciattach) differentiates
> these two via the HCI version and revision returned by the
> HCI_OP_READ_LOCAL_VERSION command.
> Additionally we apply these checks only the for UART devices. Everything
> else is assumed to be a "RTL8723B" which was originally supported by the
> driver (communicating via USB).
>
> Signed-off-by: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx>
> Signed-off-by: Jeremy Cline <jeremy@xxxxxxxxxx>
> Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
> ---
> Changes in v2 (Hans de Goede)
> -Fix some minor style issues / checkpatch warnings
> ---
> drivers/bluetooth/btrtl.c | 51 ++++++++++++++++++++++++++++++++++++---
> 1 file changed, 47 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/bluetooth/btrtl.c b/drivers/bluetooth/btrtl.c
> index 6c0d88d23d6d..8dacca64fe41 100644
> --- a/drivers/bluetooth/btrtl.c
> +++ b/drivers/bluetooth/btrtl.c
> @@ -38,6 +38,8 @@
>
> #define IC_MATCH_FL_LMPSUBV (1 << 0)
> #define IC_MATCH_FL_HCIREV (1 << 1)
> +#define IC_MATCH_FL_HCIVER (1 << 2)
> +#define IC_MATCH_FL_HCIBUS (1 << 3)
> #define IC_INFO(lmps, hcir) \
> .match_flags = IC_MATCH_FL_LMPSUBV | IC_MATCH_FL_HCIREV, \
> .lmp_subver = (lmps), \
> @@ -47,6 +49,8 @@ struct id_table {
> __u16 match_flags;
> __u16 lmp_subver;
> __u16 hci_rev;
> + __u8 hci_ver;
> + __u8 hci_bus;
> bool config_needed;
> bool has_rom_version;
> char *fw_name;
> @@ -75,6 +79,18 @@ static const struct id_table ic_id_table[] = {
> .fw_name = "rtl_bt/rtl8723a_fw.bin",
> .cfg_name = NULL },
>
> + /* 8723BS */
> + { .match_flags = IC_MATCH_FL_LMPSUBV | IC_MATCH_FL_HCIREV |
> + IC_MATCH_FL_HCIVER | IC_MATCH_FL_HCIBUS,
> + .lmp_subver = RTL_ROM_LMP_8723B,
> + .hci_rev = 0xb,
> + .hci_ver = 6,
> + .hci_bus = HCI_UART,
> + .config_needed = true,
> + .has_rom_version = true,
> + .fw_name = "rtl_bt/rtl8723bs_fw.bin",
> + .cfg_name = "rtl_bt/rtl8723bs_config.bin" },
> +
> /* 8723B */
> { IC_INFO(RTL_ROM_LMP_8723B, 0xb),
> .config_needed = false,
> @@ -89,6 +105,18 @@ static const struct id_table ic_id_table[] = {
> .fw_name = "rtl_bt/rtl8723d_fw.bin",
> .cfg_name = "rtl_bt/rtl8723d_config.bin" },
>
> + /* 8723DS */
> + { .match_flags = IC_MATCH_FL_LMPSUBV | IC_MATCH_FL_HCIREV |
> + IC_MATCH_FL_HCIVER | IC_MATCH_FL_HCIBUS,
> + .lmp_subver = RTL_ROM_LMP_8723B,
> + .hci_rev = 0xd,
> + .hci_ver = 8,
> + .hci_bus = HCI_UART,
> + .config_needed = true,
> + .has_rom_version = true,
> + .fw_name = "rtl_bt/rtl8723ds_fw.bin",
> + .cfg_name = "rtl_bt/rtl8723ds_config.bin" },
> +
> /* 8821A */
> { IC_INFO(RTL_ROM_LMP_8821A, 0xa),
> .config_needed = false,
> @@ -118,7 +146,8 @@ static const struct id_table ic_id_table[] = {
> .cfg_name = "rtl_bt/rtl8822b_config.bin" },
> };
>
> -static const struct id_table *btrtl_match_ic(u16 lmp_subver, u16 hci_rev)
> +static const struct id_table *btrtl_match_ic(u16 lmp_subver, u16 hci_rev,
> + u8 hci_ver, u8 hci_bus)
> {
> int i;
>
> @@ -129,6 +158,12 @@ static const struct id_table *btrtl_match_ic(u16 lmp_subver, u16 hci_rev)
> if ((ic_id_table[i].match_flags & IC_MATCH_FL_HCIREV) &&
> (ic_id_table[i].hci_rev != hci_rev))
> continue;
> + if ((ic_id_table[i].match_flags & IC_MATCH_FL_HCIVER) &&
> + (ic_id_table[i].hci_ver != hci_ver))
> + continue;
> + if ((ic_id_table[i].match_flags & IC_MATCH_FL_HCIBUS) &&
> + (ic_id_table[i].hci_bus != hci_bus))
> + continue;
>
> break;
> }
> @@ -481,6 +516,7 @@ struct btrtl_device_info *btrtl_initialize(struct hci_dev *hdev)
> struct sk_buff *skb;
> struct hci_rp_read_local_version *resp;
> u16 hci_rev, lmp_subver;
> + u8 hci_ver;
> int ret;
>
> btrtl_dev = kzalloc(sizeof(*btrtl_dev), GFP_KERNEL);
> @@ -501,14 +537,17 @@ struct btrtl_device_info *btrtl_initialize(struct hci_dev *hdev)
> resp->hci_ver, resp->hci_rev,
> resp->lmp_ver, resp->lmp_subver);
>
> + hci_ver = resp->hci_ver;
> hci_rev = le16_to_cpu(resp->hci_rev);
> lmp_subver = le16_to_cpu(resp->lmp_subver);
> kfree_skb(skb);
>
> - btrtl_dev->ic_info = btrtl_match_ic(lmp_subver, hci_rev);
> + btrtl_dev->ic_info = btrtl_match_ic(lmp_subver, hci_rev, hci_ver,
> + hdev->bus);
> +
I am bit reluctant to let you use hdev->bus here since that should be essentially local to the core. I know you set it before calling hci_register_dev, but it was never really designed to be accessed again by the driver? Do you need access to it or can this be done internally in the driver?
Regards
Marcel
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