Hi Balakrishna,
> - Add support to set voltage/current of various regualtors
> to power up/down BT QCA chip wcn3990.
> - Add firmware download support for BT QCA chip wcn3990.
>
> Signed-off-by: Balakrishna Godavarthi <bgodavar@xxxxxxxxxxxxxx>
> ---
> drivers/bluetooth/btqca.c | 393 ++++++++++++++++++++++++-------
> drivers/bluetooth/btqca.h | 49 +++-
> drivers/bluetooth/hci_qca.c | 496 +++++++++++++++++++++++++++++++++------
> include/net/bluetooth/hci_core.h | 3 +-
> net/bluetooth/hci_core.c | 2 +-
> net/bluetooth/hci_request.c | 23 ++
> net/bluetooth/hci_request.h | 2 +
> 7 files changed, 807 insertions(+), 161 deletions(-)
>
> diff --git a/drivers/bluetooth/btqca.c b/drivers/bluetooth/btqca.c
> index 2793d41..13c0d9e 100644
> --- a/drivers/bluetooth/btqca.c
> +++ b/drivers/bluetooth/btqca.c
> @@ -1,7 +1,7 @@
> /*
> * Bluetooth supports for Qualcomm Atheros chips
> *
> - * Copyright (c) 2015 The Linux Foundation. All rights reserved.
> + * Copyright (c) 2015, 2018 The Linux Foundation. All rights reserved.
> *
> * This program is free software; you can redistribute it and/or modify
> * it under the terms of the GNU General Public License version 2
> @@ -19,82 +19,18 @@
> */
> #include <linux/module.h>
> #include <linux/firmware.h>
> -
> #include <net/bluetooth/bluetooth.h>
> #include <net/bluetooth/hci_core.h>
> -
> #include "btqca.h"
>
> #define VERSION "0.1"
>
> -static int rome_patch_ver_req(struct hci_dev *hdev, u32 *rome_version)
> -{
> - struct sk_buff *skb;
> - struct edl_event_hdr *edl;
> - struct rome_version *ver;
> - char cmd;
> - int err = 0;
> -
> - BT_DBG("%s: ROME Patch Version Request", hdev->name);
> -
> - cmd = EDL_PATCH_VER_REQ_CMD;
> - skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, EDL_PATCH_CMD_LEN,
> - &cmd, HCI_VENDOR_PKT, HCI_INIT_TIMEOUT);
> - if (IS_ERR(skb)) {
> - err = PTR_ERR(skb);
> - BT_ERR("%s: Failed to read version of ROME (%d)", hdev->name,
> - err);
> - return err;
> - }
> -
> - if (skb->len != sizeof(*edl) + sizeof(*ver)) {
> - BT_ERR("%s: Version size mismatch len %d", hdev->name,
> - skb->len);
> - err = -EILSEQ;
> - goto out;
> - }
> -
> - edl = (struct edl_event_hdr *)(skb->data);
> - if (!edl) {
> - BT_ERR("%s: TLV with no header", hdev->name);
> - err = -EILSEQ;
> - goto out;
> - }
> -
> - if (edl->cresp != EDL_CMD_REQ_RES_EVT ||
> - edl->rtype != EDL_APP_VER_RES_EVT) {
> - BT_ERR("%s: Wrong packet received %d %d", hdev->name,
> - edl->cresp, edl->rtype);
> - err = -EIO;
> - goto out;
> - }
> -
> - ver = (struct rome_version *)(edl->data);
> -
> - BT_DBG("%s: Product:0x%08x", hdev->name, le32_to_cpu(ver->product_id));
> - BT_DBG("%s: Patch :0x%08x", hdev->name, le16_to_cpu(ver->patch_ver));
> - BT_DBG("%s: ROM :0x%08x", hdev->name, le16_to_cpu(ver->rome_ver));
> - BT_DBG("%s: SOC :0x%08x", hdev->name, le32_to_cpu(ver->soc_id));
> -
> - /* ROME chipset version can be decided by patch and SoC
> - * version, combination with upper 2 bytes from SoC
> - * and lower 2 bytes from patch will be used.
> - */
> - *rome_version = (le32_to_cpu(ver->soc_id) << 16) |
> - (le16_to_cpu(ver->rome_ver) & 0x0000ffff);
> -
> -out:
> - kfree_skb(skb);
> -
> - return err;
> -}
> -
> -static int rome_reset(struct hci_dev *hdev)
> +static int qca_btsoc_reset(struct hci_dev *hdev)
> {
> struct sk_buff *skb;
> int err;
>
> - BT_DBG("%s: ROME HCI_RESET", hdev->name);
> + BT_DBG("%s: ROME/wcn3990 HCI_RESET", hdev->name);
>
> skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
> if (IS_ERR(skb)) {
> @@ -108,7 +44,7 @@ static int rome_reset(struct hci_dev *hdev)
> return 0;
> }
>
> -static void rome_tlv_check_data(struct rome_config *config,
> +static void rome_tlv_check_data(struct qca_config *config,
> const struct firmware *fw)
> {
> const u8 *data;
> @@ -194,8 +130,121 @@ static void rome_tlv_check_data(struct rome_config *config,
> }
> }
>
> -static int rome_tlv_send_segment(struct hci_dev *hdev, int idx, int seg_size,
> - const u8 *data)
> +static void cherokee_tlv_check_data(struct qca_config *config,
> + const struct firmware *fw, bool *dwnd_flag)
> +{
> + const u8 *data;
> + u32 type_len;
> + u16 tag_id, tag_len;
> + int idx, length;
> + struct tlv_type_hdr *tlv;
> + struct cherokee_tlv_type_patch *tlv_patch;
> + struct tlv_type_nvm *tlv_nvm;
> +
> + tlv = (struct tlv_type_hdr *)fw->data;
> +
> + type_len = le32_to_cpu(tlv->type_len);
> + length = (type_len >> 8) & 0x00ffffff;
> +
> + BT_DBG("TLV Type\t\t : 0x%x", type_len & 0x000000ff);
> + BT_DBG("Length\t\t : %d bytes", length);
> +
> + switch (config->type) {
> + case TLV_TYPE_PATCH:
> + tlv_patch = (struct tlv_type_patch *)tlv->data;
> + BT_DBG("Total Length\t\t : %d bytes",
> + le32_to_cpu(tlv_patch->total_size));
> + BT_DBG("Patch Data Length\t : %d bytes",
> + le32_to_cpu(tlv_patch->data_length));
> + BT_DBG("Signing Format Version : 0x%x",
> + tlv_patch->format_version);
> + BT_DBG("Signature Algorithm\t : 0x%x",
> + tlv_patch->signature);
> + BT_DBG("Download flag\t : 0x%x",
> + tlv_patch->dwnd_cfg);
> + BT_DBG("Reserved\t\t : 0x%x",
> + le16_to_cpu(tlv_patch->reserved1));
> + BT_DBG("Product ID\t\t : 0x%04x",
> + le16_to_cpu(tlv_patch->product_id));
> + BT_DBG("Rom Build Version\t : 0x%04x",
> + le16_to_cpu(tlv_patch->rom_build));
> + BT_DBG("Patch Version\t\t : 0x%04x",
> + le16_to_cpu(tlv_patch->patch_version));
> + BT_DBG("Reserved\t\t : 0x%x",
> + le16_to_cpu(tlv_patch->reserved2));
> + BT_DBG("Patch Entry Address\t : 0x%x",
> + le32_to_cpu(tlv_patch->entry));
> + /* If the download flag is 0x03, don't wait
> + * for response from soc,i.e. 1 to n-1
> + * segment download.
> + */
> + if (tlv_patch->dwnd_cfg == 0x03)
> + *dwnd_flag = false;
> + else
> + *dwnd_flag = true;
> + break;
> +
> + case TLV_TYPE_NVM:
> + idx = 0;
> + data = tlv->data;
> + while (idx < length) {
> + tlv_nvm = (struct tlv_type_nvm *)(data + idx);
> + tag_id = le16_to_cpu(tlv_nvm->tag_id);
> + tag_len = le16_to_cpu(tlv_nvm->tag_len);
> +
> + /* Update NVM tags as needed */
> + switch (tag_id) {
> + case EDL_TAG_ID_HCI:
> + /* HCI transport layer parameters
> + * enabling software inband sleep
> + * onto controller side.
> + */
> + tlv_nvm->data[0] |= 0x80;
> +
> + /* UART Baud Rate */
> + tlv_nvm->data[2] = config->user_baud_rate;
> + break;
> + case EDL_TAG_ID_DEEP_SLEEP:
> + /* Sleep enable mask
> + * enabling deep sleep feature on controller.
> + */
> + tlv_nvm->data[0] |= 0x01;
> + break;
> + }
> +
> + idx += (sizeof(u16) + sizeof(u16) + 8 + tag_len);
> + }
> + break;
> + default:
> + BT_ERR("Unknown TLV type %d", config->type);
> + break;
> + }
> +}
> +
> +static int cherokee_tlv_send_segment(struct hci_dev *hdev, int idx,
> + int seg_size, const u8 *data)
> +{
> + u8 cmd[MAX_SIZE_PER_TLV_SEGMENT + 2];
> + int err = 0;
> +
> + BT_DBG("%s: Download segment #%d size %d", hdev->name, idx, seg_size);
> +
> + cmd[0] = EDL_PATCH_TLV_REQ_CMD;
> + cmd[1] = seg_size;
> + memcpy(cmd + 2, data, seg_size);
> +
> + err = __hci_cmd_no_event(hdev, EDL_PATCH_CMD_OPCODE, seg_size + 2,
> + cmd);
> + if (err < 0) {
> + BT_ERR("%s: Failed to send TLV segment (%d)", hdev->name, err);
> + return err;
> + }
> +
> + return err;
> +}
> +
> +static int qca_btsoc_tlv_send_segment(struct hci_dev *hdev, int idx,
> + int seg_size, const u8 *data)
> {
> struct sk_buff *skb;
> struct edl_event_hdr *edl;
> @@ -264,16 +313,56 @@ static int rome_tlv_download_request(struct hci_dev *hdev,
> data = fw->data;
> for (i = 0; i < total_segment; i++) {
> buffer = data + i * MAX_SIZE_PER_TLV_SEGMENT;
> - ret = rome_tlv_send_segment(hdev, i, MAX_SIZE_PER_TLV_SEGMENT,
> - buffer);
> + ret = qca_btsoc_tlv_send_segment(hdev, i,
> + MAX_SIZE_PER_TLV_SEGMENT, buffer);
> if (ret < 0)
> return -EIO;
> }
>
> if (remain_size) {
> buffer = data + total_segment * MAX_SIZE_PER_TLV_SEGMENT;
> - ret = rome_tlv_send_segment(hdev, total_segment, remain_size,
> - buffer);
> + ret = qca_btsoc_tlv_send_segment(hdev, total_segment,
> + remain_size, buffer);
> + if (ret < 0)
> + return -EIO;
> + }
> +
> + return 0;
> +}
> +static int cherokee_tlv_download_request(struct hci_dev *hdev,
> + const struct firmware *fw)
> +{
> + const u8 *buffer, *data;
> + int total_segment, remain_size;
> + int ret, i;
> +
> + if (!fw || !fw->data)
> + return -EINVAL;
> +
> + total_segment = fw->size / MAX_SIZE_PER_TLV_SEGMENT;
> + remain_size = fw->size % MAX_SIZE_PER_TLV_SEGMENT;
> +
> + BT_DBG("%s: Total segment num %d remain size %d total size %zu",
> + hdev->name, total_segment, remain_size, fw->size);
> +
> + data = fw->data;
> + for (i = 0; i < total_segment; i++) {
> + buffer = data + i * MAX_SIZE_PER_TLV_SEGMENT;
> + /* Read response from soc for last segment sent */
> + if (!remain_size && ((i+1) == total_segment))
> + ret = qca_btsoc_tlv_send_segment(hdev, i,
> + MAX_SIZE_PER_TLV_SEGMENT, buffer);
> + else
> + ret = cherokee_tlv_send_segment(hdev, i,
> + MAX_SIZE_PER_TLV_SEGMENT, buffer);
> + if (ret < 0)
> + return -EIO;
> + }
> +
> + if (remain_size) {
> + buffer = data + total_segment * MAX_SIZE_PER_TLV_SEGMENT;
> + ret = qca_btsoc_tlv_send_segment(hdev, total_segment,
> + remain_size, buffer);
> if (ret < 0)
> return -EIO;
> }
> @@ -282,7 +371,7 @@ static int rome_tlv_download_request(struct hci_dev *hdev,
> }
>
> static int rome_download_firmware(struct hci_dev *hdev,
> - struct rome_config *config)
> + struct qca_config *config)
> {
> const struct firmware *fw;
> int ret;
> @@ -309,7 +398,46 @@ static int rome_download_firmware(struct hci_dev *hdev,
> return ret;
> }
>
> -int qca_set_bdaddr_rome(struct hci_dev *hdev, const bdaddr_t *bdaddr)
> +static int cherokee_download_firmware(struct hci_dev *hdev,
> + struct qca_config *config)
> +{
> + const struct firmware *fw;
> + bool dwnd_flag = true;
> + int ret;
> +
> + bt_dev_info(hdev, "wcn3990 Downloading", config->fwname);
> +
> + ret = request_firmware(&fw, config->fwname, &hdev->dev);
> + if (ret) {
> + BT_ERR("%s: Failed to request file: %s (%d)", hdev->name,
> + config->fwname, ret);
> + return ret;
> + }
> +
> + cherokee_tlv_check_data(config, fw, &dwnd_flag);
> + /* check whether the download flag is set.if bit is enabled
> + * terminate the ram patch download. As we are not supporting,
> + * receiving of response from soc for every segment sent.
> + * We look for response from soc for last segment.
> + */
> + if (dwnd_flag == true && config->type == TLV_TYPE_PATCH) {
> + BT_ERR("%s: btsoc download flag enabled", hdev->name);
> + return -EOPNOTSUPP;
> + }
> +
> + ret = cherokee_tlv_download_request(hdev, fw);
> + if (ret) {
> + BT_ERR("%s: Failed to download file: %s (%d)", hdev->name,
> + config->fwname, ret);
> + }
> +
> + release_firmware(fw);
> +
> + return ret;
> +}
> +
> +
> +int qca_btsoc_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
> {
> struct sk_buff *skb;
> u8 cmd[9];
> @@ -332,12 +460,12 @@ int qca_set_bdaddr_rome(struct hci_dev *hdev, const bdaddr_t *bdaddr)
>
> return 0;
> }
> -EXPORT_SYMBOL_GPL(qca_set_bdaddr_rome);
> +EXPORT_SYMBOL_GPL(qca_btsoc_set_bdaddr);
so why is this all intermixed in a single patch. And please don’t change this. If you want a qca_set_bdaddr, then fine, otherwise keep the _rome postfix. Also these things can really be cleaned up in a follow up patch.
>
> int qca_uart_setup_rome(struct hci_dev *hdev, uint8_t baudrate)
> {
> u32 rome_ver = 0;
> - struct rome_config config;
> + struct qca_config config;
> int err;
>
> BT_DBG("%s: ROME setup on UART", hdev->name);
> @@ -345,7 +473,7 @@ int qca_uart_setup_rome(struct hci_dev *hdev, uint8_t baudrate)
> config.user_baud_rate = baudrate;
>
> /* Get ROME version information */
> - err = rome_patch_ver_req(hdev, &rome_ver);
> + err = qca_btsoc_patch_ver_req(hdev, &rome_ver);
So this qca_btsoc naming is not something I like at all. Please skip this renaming and make patches as simple as possible.
> if (err < 0 || rome_ver == 0) {
> BT_ERR("%s: Failed to get version 0x%x", hdev->name, err);
> return err;
> @@ -374,7 +502,7 @@ int qca_uart_setup_rome(struct hci_dev *hdev, uint8_t baudrate)
> }
>
> /* Perform HCI reset */
> - err = rome_reset(hdev);
> + err = qca_btsoc_reset(hdev);
> if (err < 0) {
> BT_ERR("%s: Failed to run HCI_RESET (%d)", hdev->name, err);
> return err;
> @@ -386,6 +514,111 @@ int qca_uart_setup_rome(struct hci_dev *hdev, uint8_t baudrate)
> }
> EXPORT_SYMBOL_GPL(qca_uart_setup_rome);
>
> +int qca_btsoc_patch_ver_req(struct hci_dev *hdev, u32 *soc_version)
> +{
> + struct sk_buff *skb;
> + struct edl_event_hdr *edl;
> + struct qca_btsoc_version *ver;
> + char cmd;
> + int err = 0;
> +
> + BT_DBG("%s: BTSOC Patch Version Request", hdev->name);
> +
> + cmd = EDL_PATCH_VER_REQ_CMD;
> + skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, EDL_PATCH_CMD_LEN,
> + &cmd, HCI_VENDOR_PKT, HCI_INIT_TIMEOUT);
> + if (IS_ERR(skb)) {
> + err = PTR_ERR(skb);
> + BT_ERR("%s: Failed to read version of ROME (%d)", hdev->name,
> + err);
> + return err;
> + }
> +
> + if (skb->len != sizeof(*edl) + sizeof(*ver)) {
> + BT_ERR("%s: Version size mismatch len %d", hdev->name,
> + skb->len);
> + err = -EILSEQ;
> + goto out;
> + }
> +
> + edl = (struct edl_event_hdr *)(skb->data);
> + if (!edl) {
> + BT_ERR("%s: TLV with no header", hdev->name);
> + err = -EILSEQ;
> + goto out;
> + }
> +
> + if (edl->cresp != EDL_CMD_REQ_RES_EVT ||
> + edl->rtype != EDL_APP_VER_RES_EVT) {
> + BT_ERR("%s: Wrong packet received %d %d", hdev->name,
> + edl->cresp, edl->rtype);
> + err = -EIO;
> + goto out;
> + }
> +
> + ver = (struct qca_btsoc_version *)(edl->data);
> +
> + BT_DBG("%s: Product:0x%08x", hdev->name, le32_to_cpu(ver->product_id));
> + BT_DBG("%s: Patch :0x%08x", hdev->name, le16_to_cpu(ver->patch_ver));
> + BT_DBG("%s: ROM :0x%08x", hdev->name, le16_to_cpu(ver->btsoc_ver));
> + BT_DBG("%s: SOC :0x%08x", hdev->name, le32_to_cpu(ver->soc_id));
> +
> + /* BTSOC chipset version can be decided by patch and SoC
> + * version, combination with upper 2 bytes from SoC
> + * and lower 2 bytes from patch will be used.
> + */
> + *soc_version = (le32_to_cpu(ver->soc_id) << 16) |
> + (le16_to_cpu(ver->btsoc_ver) & 0x0000ffff);
> +
> +out:
> + kfree_skb(skb);
> +
> + return err;
> +}
> +EXPORT_SYMBOL_GPL(qca_btsoc_patch_ver_req);
> +
> +int qca_uart_setup_cherokee(struct hci_dev *hdev, uint8_t baudrate,
> + u32 *cherokee_ver)
> +{
> + struct qca_config config;
> + int err;
> +
> + BT_DBG("%s: wcn3990 setup on UART", hdev->name);
> + config.user_baud_rate = baudrate;
> +
> + /* Download rampatch file */
> + config.type = TLV_TYPE_PATCH;
> + snprintf(config.fwname, sizeof(config.fwname), "qca/rampatch_%08x.tlv",
> + *cherokee_ver);
> + err = cherokee_download_firmware(hdev, &config);
> + if (err < 0) {
> + BT_ERR("%s: Failed to download patch (%d)", hdev->name, err);
> + return err;
> + }
> +
> + /* Download NVM configuration */
> + config.type = TLV_TYPE_NVM;
> + snprintf(config.fwname, sizeof(config.fwname), "qca/nvm_%08x.bin",
> + *cherokee_ver);
> + err = cherokee_download_firmware(hdev, &config);
> + if (err < 0) {
> + BT_ERR("%s: Failed to download NVM (%d)", hdev->name, err);
> + return err;
> + }
> +
> + /* Perform HCI reset */
> + err = qca_btsoc_reset(hdev);
> + if (err < 0) {
> + BT_ERR("%s: Failed to run HCI_RESET (%d)", hdev->name, err);
> + return err;
> + }
> +
> + bt_dev_info(hdev, "wcn3990 setup on UART is completed");
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(qca_uart_setup_cherokee);
> +
> MODULE_AUTHOR("Ben Young Tae Kim <ytkim@xxxxxxxxxxxxxxxx>");
> MODULE_DESCRIPTION("Bluetooth support for Qualcomm Atheros family ver " VERSION);
> MODULE_VERSION(VERSION);
> diff --git a/drivers/bluetooth/btqca.h b/drivers/bluetooth/btqca.h
> index 65e994b..7608423 100644
> --- a/drivers/bluetooth/btqca.h
> +++ b/drivers/bluetooth/btqca.h
> @@ -1,7 +1,7 @@
> /*
> * Bluetooth supports for Qualcomm Atheros ROME chips
> *
> - * Copyright (c) 2015 The Linux Foundation. All rights reserved.
> + * Copyright (c) 2015, 2018 The Linux Foundation. All rights reserved.
> *
> * This program is free software; you can redistribute it and/or modify
> * it under the terms of the GNU General Public License version 2
> @@ -37,6 +37,9 @@
> #define EDL_TAG_ID_HCI (17)
> #define EDL_TAG_ID_DEEP_SLEEP (27)
>
> +#define CHEROKEE_POWERON_PULSE (0xFC)
> +#define CHEROKEE_POWEROFF_PULSE (0xC0)
> +
> enum qca_bardrate {
> QCA_BAUDRATE_115200 = 0,
> QCA_BAUDRATE_57600,
> @@ -66,7 +69,7 @@ enum rome_tlv_type {
> TLV_TYPE_NVM
> };
>
> -struct rome_config {
> +struct qca_config {
> u8 type;
> char fwname[64];
> uint8_t user_baud_rate;
> @@ -78,13 +81,14 @@ struct edl_event_hdr {
> __u8 data[0];
> } __packed;
>
> -struct rome_version {
> +struct qca_btsoc_version {
> __le32 product_id;
> __le16 patch_ver;
> - __le16 rome_ver;
> + __le16 btsoc_ver;
> __le32 soc_id;
> } __packed;
>
> +
> struct tlv_seg_resp {
> __u8 result;
> } __packed;
> @@ -102,6 +106,21 @@ struct tlv_type_patch {
> __le32 entry;
> } __packed;
>
> +struct cherokee_tlv_type_patch {
> + __le32 total_size;
> + __le32 data_length;
> + __u8 format_version;
> + __u8 signature;
> + __u8 dwnd_cfg;
> + __le16 reserved1;
> + __le16 product_id;
> + __le16 rom_build;
> + __le16 patch_version;
> + __le16 reserved2;
> + __le32 entry;
> +} __packed;
> +
> +
> struct tlv_type_nvm {
> __le16 tag_id;
> __le16 tag_len;
> @@ -115,14 +134,21 @@ struct tlv_type_hdr {
> __u8 data[0];
> } __packed;
This all needs to be aligned with the patches from Loic first.
>
> +int qca_btsoc_cleanup(struct hci_dev *hdev);
> +int btqca_power_setup(bool on);
> +
> #if IS_ENABLED(CONFIG_BT_QCA)
>
> -int qca_set_bdaddr_rome(struct hci_dev *hdev, const bdaddr_t *bdaddr);
> +int qca_btsoc_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr);
> int qca_uart_setup_rome(struct hci_dev *hdev, uint8_t baudrate);
> +int qca_uart_setup_cherokee(struct hci_dev *hdev, uint8_t baudrate,
> + u32 *cherokee_ver);
> +int qca_btsoc_patch_ver_req(struct hci_dev *hdev, u32 *soc_version);
>
> #else
>
> -static inline int qca_set_bdaddr_rome(struct hci_dev *hdev, const bdaddr_t *bdaddr)
> +static inline int qca_btsoc_set_bdaddr(struct hci_dev *hdev,
> + const bdaddr_t *bdaddr)
> {
> return -EOPNOTSUPP;
> }
> @@ -132,4 +158,15 @@ static inline int qca_uart_setup_rome(struct hci_dev *hdev, int speed)
> return -EOPNOTSUPP;
> }
>
> +static inline int qca_uart_setup_cherokee(struct hci_dev *hdev,
> + uint8_t baudrate, u32 *cherokee_ver)
> +{
> + return -EOPNOTSUPP;
> +}
> +
> +static int qca_btsoc_patch_ver_req(struct hci_dev *hdev, u32 *cherokee_version)
> +{
> + return -EOPNOTSUPP;
> +}
> +
> #endif
> diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
> index f05382b..bc08559 100644
> --- a/drivers/bluetooth/hci_qca.c
> +++ b/drivers/bluetooth/hci_qca.c
> @@ -5,7 +5,7 @@
> * protocol extension to H4.
> *
> * Copyright (C) 2007 Texas Instruments, Inc.
> - * Copyright (c) 2010, 2012 The Linux Foundation. All rights reserved.
> + * Copyright (c) 2010, 2012, 2018 The Linux Foundation. All rights reserved.
> *
> * Acknowledgements:
> * This file is based on hci_ll.c, which was...
> @@ -35,9 +35,13 @@
> #include <linux/mod_devicetable.h>
> #include <linux/module.h>
> #include <linux/serdev.h>
> -
> #include <net/bluetooth/bluetooth.h>
> #include <net/bluetooth/hci_core.h>
> +#include <asm-generic/delay.h>
> +#include <linux/platform_device.h>
> +#include <linux/delay.h>
> +#include <linux/regulator/consumer.h>
> +#include <linux/of_device.h>
>
> #include "hci_uart.h"
> #include "btqca.h"
> @@ -119,12 +123,49 @@ struct qca_data {
> u64 votes_off;
> };
>
> +enum btqca_soc_t {
> + BTQCA_INVALID = -1,
> + BTQCA_AR3002,
> + BTQCA_ROME,
> + BTQCA_CHEROKEE
> +};
> +
> struct qca_serdev {
> struct hci_uart serdev_hu;
> struct gpio_desc *bt_en;
> struct clk *susclk;
> + enum btqca_soc_t btsoc_type;
> +};
> +
> +/*
> + * voltage regulator information required for configuring the
> + * QCA bluetooth chipset
> + */
> +struct btqca_vreg {
> + const char *name;
> + unsigned int min_v;
> + unsigned int max_v;
> + unsigned int load_ua;
> };
>
> +struct btqca_vreg_data {
> + enum btqca_soc_t soc_type;
> + struct btqca_vreg *vregs;
> + size_t num_vregs;
> +};
> +
> +/*
> + * Platform data for the QCA bluetooth power driver.
> + */
> +struct btqca_power {
> + struct device *dev;
> + struct btqca_vreg_data *vreg_data;
> + struct regulator_bulk_data *vreg_bulk;
> + bool vreg_status;
> +};
> +
> +static struct btqca_power *qca;
> +
> static void __serial_clock_on(struct tty_struct *tty)
> {
> /* TODO: Some chipset requires to enable UART clock on client
> @@ -461,9 +502,11 @@ static int qca_open(struct hci_uart *hu)
>
> if (hu->serdev) {
> serdev_device_open(hu->serdev);
> -
> qcadev = serdev_device_get_drvdata(hu->serdev);
> - gpiod_set_value_cansleep(qcadev->bt_en, 1);
> + if (qcadev->btsoc_type == BTQCA_CHEROKEE)
> + btqca_power_setup(true);
This can not be what we are doing. If there needs to be global power on, then that needs to be done differently. This ->open callback is specific to the Bluetooth chip. And only that chip, not the 3 others in the system.
Just to make this clear, I am not taking code that thinks there is only one Bluetooth chip in the system. I refused to do this for btqcomsmd and I will refuse this here. So please get this sorted.
> + else
> + gpiod_set_value_cansleep(qcadev->bt_en, 1);
> }
>
> BT_DBG("HCI_UART_QCA open, tx_idle_delay=%u, wake_retrans=%u",
> @@ -552,7 +595,10 @@ static int qca_close(struct hci_uart *hu)
> serdev_device_close(hu->serdev);
>
> qcadev = serdev_device_get_drvdata(hu->serdev);
> - gpiod_set_value_cansleep(qcadev->bt_en, 0);
> + if (qcadev->btsoc_type == BTQCA_CHEROKEE)
> + qca_btsoc_cleanup(hu->hdev);
> + else
> + gpiod_set_value_cansleep(qcadev->bt_en, 0);
> }
>
> kfree_skb(qca->rx_skb);
> @@ -872,6 +918,8 @@ static uint8_t qca_get_baudrate_value(int speed)
> return QCA_BAUDRATE_2000000;
> case 3000000:
> return QCA_BAUDRATE_3000000;
> + case 3200000:
> + return QCA_BAUDRATE_3200000;
> case 3500000:
> return QCA_BAUDRATE_3500000;
> default:
> @@ -886,7 +934,7 @@ static int qca_set_baudrate(struct hci_dev *hdev, uint8_t baudrate)
> struct sk_buff *skb;
> u8 cmd[] = { 0x01, 0x48, 0xFC, 0x01, 0x00 };
>
> - if (baudrate > QCA_BAUDRATE_3000000)
> + if (baudrate > QCA_BAUDRATE_3200000)
> return -EINVAL;
>
> cmd[4] = baudrate;
> @@ -923,68 +971,266 @@ static inline void host_set_baudrate(struct hci_uart *hu, unsigned int speed)
> hci_uart_set_baudrate(hu, speed);
> }
>
> +static int qca_send_poweron_cmd(struct hci_dev *hdev)
> +{
> + struct hci_uart *hu = hci_get_drvdata(hdev);
> + struct qca_data *qca = hu->priv;
> + struct sk_buff *skb;
> + u8 cmd;
> +
> + BT_DBG("%s sending power on command to btsoc", hdev->name);
> + /* By sending 0xFC host is trying to power up the soc */
> + cmd = CHEROKEE_POWERON_PULSE;
> + skb = bt_skb_alloc(sizeof(cmd), GFP_ATOMIC);
> + if (!skb) {
> + BT_ERR("Failed to allocate memory for skb packet");
> + return -ENOMEM;
> + }
> +
> + skb_put_data(skb, &cmd, sizeof(cmd));
> + hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
> +
> + skb_queue_tail(&qca->txq, skb);
> + hci_uart_tx_wakeup(hu);
> +
> + /* Wait for 100 us for soc to settle down */
> + set_current_state(TASK_UNINTERRUPTIBLE);
> + schedule_timeout(usecs_to_jiffies(100));
> + set_current_state(TASK_INTERRUPTIBLE);
> +
> + return 0;
> +}
> +
> +static int qca_send_poweroff_cmd(struct hci_dev *hdev)
> +{
> + struct hci_uart *hu = hci_get_drvdata(hdev);
> + struct qca_data *qca = hu->priv;
> + struct sk_buff *skb;
> + u8 cmd;
> +
> + BT_DBG("%s sending power off command to btsoc", hdev->name);
> + /* By sending 0xC0 host is trying to power off the soc */
> + cmd = CHEROKEE_POWEROFF_PULSE;
> + skb = bt_skb_alloc(sizeof(cmd), GFP_ATOMIC);
> + if (!skb) {
> + BT_ERR("Failed to allocate memory for skb packet");
> + return -ENOMEM;
> + }
> +
> + skb_put_data(skb, &cmd, sizeof(cmd));
Don’t we have a skb_put_u8?
> + hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
> +
> + skb_queue_tail(&qca->txq, skb);
> + hci_uart_tx_wakeup(hu);
> +
> + /* Wait for 100 us for soc to settle down */
> + set_current_state(TASK_UNINTERRUPTIBLE);
> + schedule_timeout(usecs_to_jiffies(100));
> + set_current_state(TASK_INTERRUPTIBLE);
And this can not just be an msleep?
> +
> + return 0;
> +}
> +
> +static int qca_serdev_open(struct hci_uart *hu)
> +{
> + int ret = 0;
> +
> + if (hu->serdev)
> + serdev_device_open(hu->serdev);
> + else {
> + bt_dev_err(hu->hdev, "%s:open operation not supported");
> + ret = 1;
> + }
> +
> + return ret;
> +}
> +
> +int qca_btsoc_cleanup(struct hci_dev *hdev)
> +{
> + struct hci_uart *hu = hci_get_drvdata(hdev);
> +
> + /* change host baud rate before sending power off command */
> + host_set_baudrate(hu, 2400);
> + /* send 0xC0 command to btsoc before turning off regulators */
> + qca_send_poweroff_cmd(hdev);
> + /* turn off btsoc */
> + return btqca_power_setup(false);
> +}
> +
> +static int qca_serdev_close(struct hci_uart *hu)
> +{
> + int ret = 0;
> +
> + if (hu->serdev)
> + serdev_device_close(hu->serdev);
> + else {
> + bt_dev_err(hu->hdev, "close operation not supported");
> + ret = 1;
> + }
> +
> + return ret;
> +}
I assumed we already have QCA serdev support merged into bluetooth-next. What is this doing?
> +
> static int qca_setup(struct hci_uart *hu)
> {
> struct hci_dev *hdev = hu->hdev;
> struct qca_data *qca = hu->priv;
> + struct qca_serdev *qcadev;
> unsigned int speed, qca_baudrate = QCA_BAUDRATE_115200;
> int ret;
> + unsigned int soc_ver;
> +
> + qcadev = serdev_device_get_drvdata(hu->serdev);
> +
> + switch (qcadev->btsoc_type) {
> + case BTQCA_CHEROKEE:
> +
> + bt_dev_info(hdev, "setting up wcn3990");
> + /* Patch downloading has to be done without IBS mode */
> + clear_bit(STATE_IN_BAND_SLEEP_ENABLED, &qca->flags);
> + /* Setup initial baudrate */
> + speed = 0;
> + if (hu->init_speed)
> + speed = hu->init_speed;
> + else if (hu->proto->init_speed)
> + speed = hu->proto->init_speed;
> +
> + if (speed)
> + host_set_baudrate(hu, speed);
> + else {
> + bt_dev_err(hdev, "initial speed %u", speed);
> + return -1;
> + }
>
> - bt_dev_info(hdev, "ROME setup");
> + /* clear flow control- for sync cmd*/
> + hci_uart_set_flow_control(hu, true);
> + /* send poweron command to btsoc */
> + ret = qca_send_poweron_cmd(hdev);
> + if (ret) {
> + BT_ERR("%s:sending sync command failed", hdev->name);
> + return ret;
> + }
>
> - /* Patch downloading has to be done without IBS mode */
> - clear_bit(STATE_IN_BAND_SLEEP_ENABLED, &qca->flags);
> + /* close port */
> + ret = qca_serdev_close(hu);
> + if (ret)
> + return ret;
> + /* reopen port */
> + ret = qca_serdev_open(hu);
> + if (ret)
> + return ret;
> + /* Setup initial baudrate */
> + speed = 0;
> + if (hu->init_speed)
> + speed = hu->init_speed;
> + else if (hu->proto->init_speed)
> + speed = hu->proto->init_speed;
> + if (speed)
> + host_set_baudrate(hu, speed);
> + else {
> + bt_dev_err(hdev, "initial speed %u", speed);
> + return -1;
> + }
>
> - /* Setup initial baudrate */
> - speed = 0;
> - if (hu->init_speed)
> - speed = hu->init_speed;
> - else if (hu->proto->init_speed)
> - speed = hu->proto->init_speed;
> + /* Enable flow control */
> + hci_uart_set_flow_control(hu, false);
> + /* wait until flow control settled */
> + mdelay(100);
>
> - if (speed)
> - host_set_baudrate(hu, speed);
> + ret = qca_btsoc_patch_ver_req(hdev, &soc_ver);
> + if (ret < 0 || soc_ver == 0) {
> + BT_ERR("%s: Failed to get version 0x%x", hdev->name,
> + ret);
> + return ret;
> + }
>
> - /* Setup user speed if needed */
> - speed = 0;
> - if (hu->oper_speed)
> - speed = hu->oper_speed;
> - else if (hu->proto->oper_speed)
> + bt_dev_info(hdev, "wcn3990 controller version 0x%08x", soc_ver);
> +
> + /* clear flow control */
> + hci_uart_set_flow_control(hu, true);
> + /* set operating speed */
> speed = hu->proto->oper_speed;
> + if (speed) {
> + qca_baudrate = qca_get_baudrate_value(speed);
> + bt_dev_info(hdev, "Set UART speed to %d", speed);
> + ret = qca_set_baudrate(hdev, qca_baudrate);
> + if (ret) {
> + bt_dev_err(hdev, "Failed to change the baud rate(%d)",
> + ret);
> + return ret;
> + }
> + host_set_baudrate(hu, speed);
> + }
>
> - if (speed) {
> - qca_baudrate = qca_get_baudrate_value(speed);
> + /* Set flow control */
> + hci_uart_set_flow_control(hu, false);
> + /*Setup patch and NVM configurations */
> + ret = qca_uart_setup_cherokee(hdev, qca_baudrate, &soc_ver);
> + if (!ret) {
> + set_bit(STATE_IN_BAND_SLEEP_ENABLED, &qca->flags);
> + qca_debugfs_init(hdev);
> + }
>
> - bt_dev_info(hdev, "Set UART speed to %d", speed);
> - ret = qca_set_baudrate(hdev, qca_baudrate);
> - if (ret) {
> - bt_dev_err(hdev, "Failed to change the baud rate (%d)",
> - ret);
> - return ret;
> + /* Setup wcn3990 bdaddr */
> + hu->hdev->set_bdaddr = qca_btsoc_set_bdaddr;
> +
> + return ret;
> +
> + default:
> + bt_dev_info(hdev, "ROME setup");
> + /* Patch downloading has to be done without IBS mode */
> + clear_bit(STATE_IN_BAND_SLEEP_ENABLED, &qca->flags);
> + /* Setup initial baudrate */
> + speed = 0;
> + if (hu->init_speed)
> + speed = hu->init_speed;
> + else if (hu->proto->init_speed)
> + speed = hu->proto->init_speed;
> + if (speed)
> + hci_uart_set_baudrate(hu, speed);
> +
> + /* Setup user speed if needed */
> + speed = 0;
> + if (hu->oper_speed)
> + speed = hu->oper_speed;
> + else if (hu->proto->oper_speed)
> + speed = hu->proto->oper_speed;
> + if (speed) {
> + qca_baudrate = qca_get_baudrate_value(speed);
> + bt_dev_info(hdev, "Set UART speed to %d", speed);
> + ret = qca_set_baudrate(hdev, qca_baudrate);
> + if (ret) {
> + bt_dev_err(hdev, "Failed to change the baud rate(%d)",
> + ret);
> + return ret;
> + }
> + host_set_baudrate(hu, speed);
> }
> - host_set_baudrate(hu, speed);
> - }
>
> - /* Setup patch / NVM configurations */
> - ret = qca_uart_setup_rome(hdev, qca_baudrate);
> - if (!ret) {
> - set_bit(STATE_IN_BAND_SLEEP_ENABLED, &qca->flags);
> - qca_debugfs_init(hdev);
> - } else if (ret == -ENOENT) {
> - /* No patch/nvm-config found, run with original fw/config */
> - ret = 0;
> - } else if (ret == -EAGAIN) {
> - /*
> - * Userspace firmware loader will return -EAGAIN in case no
> - * patch/nvm-config is found, so run with original fw/config.
> - */
> - ret = 0;
> - }
> + /* Setup patch / NVM configurations */
> + ret = qca_uart_setup_rome(hdev, qca_baudrate);
> + if (!ret) {
> + set_bit(STATE_IN_BAND_SLEEP_ENABLED, &qca->flags);
> + qca_debugfs_init(hdev);
> + } else if (ret == -ENOENT) {
> + /* No patch/nvm-config found, run with original
> + * fw/config
> + */
> + ret = 0;
> + } else if (ret == -EAGAIN) {
> + /*
> + * Userspace firmware loader will return -EAGAIN in
> + * case no patch/nvm-config is found, so run with
> + * original fw/config.
> + */
> + ret = 0;
> + }
>
> - /* Setup bdaddr */
> - hu->hdev->set_bdaddr = qca_set_bdaddr_rome;
> + /* Setup bdaddr */
> + hu->hdev->set_bdaddr = qca_btsoc_set_bdaddr;
>
> - return ret;
> + return ret;
> + }
> }
>
> static struct hci_uart_proto qca_proto = {
> @@ -1002,42 +1248,142 @@ static int qca_setup(struct hci_uart *hu)
> .dequeue = qca_dequeue,
> };
>
> +static const struct btqca_vreg_data cherokee_data = {
> + .soc_type = BTQCA_CHEROKEE,
> + .vregs = (struct btqca_vreg []) {
> + { "vddio", 1352000, 1352000, 0 },
> + { "vddxtal", 1904000, 2040000, 0 },
> + { "vddcore", 1800000, 1800000, 1 },
> + { "vddpa", 130400, 1304000, 1 },
> + { "vddldo", 3000000, 3312000, 1 },
> + { "vddpwd", 3312000, 3600000, 0 },
> + },
> + .num_vregs = 6,
> +};
> +
> +int btqca_power_setup(bool on)
> +{
> + int ret = 0;
> + int i;
> + struct btqca_vreg *vregs;
> +
> + if (!qca || !qca->vreg_data || !qca->vreg_bulk)
> + return -EINVAL;
> + vregs = qca->vreg_data->vregs;
> +
> + BT_DBG("on: %d", on);
> +
> + /* turn on if regualtors are off */
> + if (on == true && qca->vreg_status == false) {
> + qca->vreg_status = true;
> + for (i = 0; i < qca->vreg_data->num_vregs; i++) {
> + regulator_set_voltage(qca->vreg_bulk[i].consumer,
> + vregs[i].min_v,
> + vregs[i].max_v);
> +
> + if (vregs[i].load_ua)
> + regulator_set_load(qca->vreg_bulk[i].consumer,
> + vregs[i].load_ua);
> +
> + regulator_enable(qca->vreg_bulk[i].consumer);
> + }
> + } else if (on == false && qca->vreg_status == true) {
> + qca->vreg_status = false;
> + for (i = 0; i < qca->vreg_data->num_vregs; i++) {
> + regulator_disable(qca->vreg_bulk[i].consumer);
> + regulator_set_voltage(qca->vreg_bulk[i].consumer,
> + 0, vregs[i].max_v);
> + if (vregs[i].load_ua)
> + regulator_set_load(qca->vreg_bulk[i].consumer,
> + 0);
> + }
> + }
> +
> + return ret;
> +}
> +
> +static int init_regulators(struct btqca_power *qca,
> + const struct btqca_vreg *vregs,
> + size_t num_vregs)
> +{
> + int i;
> +
> + qca->vreg_bulk = devm_kzalloc(qca->dev, num_vregs *
> + sizeof(struct regulator_bulk_data),
> + GFP_KERNEL);
> + if (!qca->vreg_bulk)
> + return -ENOMEM;
> +
> + for (i = 0; i < num_vregs; i++)
> + qca->vreg_bulk[i].supply = vregs[i].name;
> +
> + return devm_regulator_bulk_get(qca->dev, num_vregs, qca->vreg_bulk);
> +}
> +
> static int qca_serdev_probe(struct serdev_device *serdev)
> {
> struct qca_serdev *qcadev;
> - int err;
> + struct btqca_vreg_data *data;
> + int err = 0;
>
> qcadev = devm_kzalloc(&serdev->dev, sizeof(*qcadev), GFP_KERNEL);
> if (!qcadev)
> return -ENOMEM;
>
> qcadev->serdev_hu.serdev = serdev;
> + data = of_device_get_match_data(&serdev->dev);
> + if (data && data->soc_type == BTQCA_CHEROKEE)
> + qcadev->btsoc_type = BTQCA_CHEROKEE;
> + else
> + qcadev->btsoc_type = BTQCA_ROME;
> +
> serdev_device_set_drvdata(serdev, qcadev);
> + if (qcadev->btsoc_type == BTQCA_CHEROKEE) {
> + qca = kzalloc(sizeof(struct btqca_power), GFP_KERNEL);
> + if (!qca)
> + return -ENOMEM;
> +
> + qca->dev = &serdev->dev;
> + qca->vreg_data = data;
> + err = init_regulators(qca, data->vregs, data->num_vregs);
> + if (err) {
> + BT_ERR("Failed to init regualtors:%d", err);
> + kfree(qca);
> + }
>
> - qcadev->bt_en = devm_gpiod_get(&serdev->dev, "enable",
> - GPIOD_OUT_LOW);
> - if (IS_ERR(qcadev->bt_en)) {
> - dev_err(&serdev->dev, "failed to acquire enable gpio\n");
> - return PTR_ERR(qcadev->bt_en);
> - }
> + /* set voltage regulator status as false */
> + qca->vreg_status = false;
> + err = hci_uart_register_device(&qcadev->serdev_hu, &qca_proto);
> + if (err) {
> + BT_ERR("wcn3990 serdev registration failed");
> + kfree(qca);
> + }
> + } else {
> + qcadev->bt_en = devm_gpiod_get(&serdev->dev, "enable",
> + GPIOD_OUT_LOW);
> + if (IS_ERR(qcadev->bt_en)) {
> + dev_err(&serdev->dev, "failed to acquire enable gpio\n");
> + return PTR_ERR(qcadev->bt_en);
> + }
>
> - qcadev->susclk = devm_clk_get(&serdev->dev, NULL);
> - if (IS_ERR(qcadev->susclk)) {
> - dev_err(&serdev->dev, "failed to acquire clk\n");
> - return PTR_ERR(qcadev->susclk);
> - }
> + qcadev->susclk = devm_clk_get(&serdev->dev, NULL);
> + if (IS_ERR(qcadev->susclk)) {
> + dev_err(&serdev->dev, "failed to acquire clk\n");
> + return PTR_ERR(qcadev->susclk);
> + }
>
> - err = clk_set_rate(qcadev->susclk, SUSCLK_RATE_32KHZ);
> - if (err)
> - return err;
> + err = clk_set_rate(qcadev->susclk, SUSCLK_RATE_32KHZ);
> + if (err)
> + return err;
>
> - err = clk_prepare_enable(qcadev->susclk);
> - if (err)
> - return err;
> + err = clk_prepare_enable(qcadev->susclk);
> + if (err)
> + return err;
>
> - err = hci_uart_register_device(&qcadev->serdev_hu, &qca_proto);
> - if (err)
> - clk_disable_unprepare(qcadev->susclk);
> + err = hci_uart_register_device(&qcadev->serdev_hu, &qca_proto);
> + if (err)
> + clk_disable_unprepare(qcadev->susclk);
> + }
>
> return err;
> }
> @@ -1047,12 +1393,16 @@ static void qca_serdev_remove(struct serdev_device *serdev)
> struct qca_serdev *qcadev = serdev_device_get_drvdata(serdev);
>
> hci_uart_unregister_device(&qcadev->serdev_hu);
> -
> - clk_disable_unprepare(qcadev->susclk);
> + if (qcadev->btsoc_type == BTQCA_CHEROKEE) {
> + btqca_power_setup(false);
> + kfree(qca);
> + } else
> + clk_disable_unprepare(qcadev->susclk);
> }
>
> static const struct of_device_id qca_bluetooth_of_match[] = {
> { .compatible = "qcom,qca6174-bt" },
> + { .compatible = "qcom,wcn3990-bt", .data = &cherokee_data},
> { /* sentinel */ }
> };
> MODULE_DEVICE_TABLE(of, qca_bluetooth_of_match);
> diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
> index b619a19..a12e967 100644
> --- a/include/net/bluetooth/hci_core.h
> +++ b/include/net/bluetooth/hci_core.h
> @@ -1393,7 +1393,8 @@ struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
> const void *param, u32 timeout);
> struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
> const void *param, u8 event, u32 timeout);
> -
> +int __hci_cmd_no_event(struct hci_dev *hdev, u16 opcode, u32 plen,
> + const void *param);
> int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
> const void *param);
NAK, see my comments that I send Loic for this kind of change. We also don’t intermix net/ and drivers/ unless needed. So this can be easily separated.
Regards
Marcel
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