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![Zhengping Jiang](/assets/img/avatar_default.png)
The BTMTKSDIO_BT_WAKE_ENABLED flag is set for bluetooth interrupt during system suspend and increases wakeup count for bluetooth event. Signed-off-by: Zhengping Jiang <jiangzp@google.com> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
1535 lines
36 KiB
C
1535 lines
36 KiB
C
// SPDX-License-Identifier: GPL-2.0
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// Copyright (c) 2019 MediaTek Inc.
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/*
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* Bluetooth support for MediaTek SDIO devices
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*
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* This file is written based on btsdio.c and btmtkuart.c.
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*
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* Author: Sean Wang <sean.wang@mediatek.com>
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*
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*/
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#include <asm/unaligned.h>
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#include <linux/atomic.h>
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#include <linux/gpio/consumer.h>
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#include <linux/init.h>
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#include <linux/iopoll.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/pm_runtime.h>
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#include <linux/skbuff.h>
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#include <linux/mmc/host.h>
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#include <linux/mmc/sdio_ids.h>
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#include <linux/mmc/sdio_func.h>
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#include <net/bluetooth/bluetooth.h>
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#include <net/bluetooth/hci_core.h>
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#include "h4_recv.h"
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#include "btmtk.h"
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#define VERSION "0.1"
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#define MTKBTSDIO_AUTOSUSPEND_DELAY 1000
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static bool enable_autosuspend = true;
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struct btmtksdio_data {
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const char *fwname;
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u16 chipid;
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bool lp_mbox_supported;
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};
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static const struct btmtksdio_data mt7663_data = {
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.fwname = FIRMWARE_MT7663,
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.chipid = 0x7663,
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.lp_mbox_supported = false,
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};
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static const struct btmtksdio_data mt7668_data = {
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.fwname = FIRMWARE_MT7668,
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.chipid = 0x7668,
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.lp_mbox_supported = false,
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};
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static const struct btmtksdio_data mt7921_data = {
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.fwname = FIRMWARE_MT7961,
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.chipid = 0x7921,
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.lp_mbox_supported = true,
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};
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static const struct sdio_device_id btmtksdio_table[] = {
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{SDIO_DEVICE(SDIO_VENDOR_ID_MEDIATEK, SDIO_DEVICE_ID_MEDIATEK_MT7663),
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.driver_data = (kernel_ulong_t)&mt7663_data },
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{SDIO_DEVICE(SDIO_VENDOR_ID_MEDIATEK, SDIO_DEVICE_ID_MEDIATEK_MT7668),
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.driver_data = (kernel_ulong_t)&mt7668_data },
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{SDIO_DEVICE(SDIO_VENDOR_ID_MEDIATEK, SDIO_DEVICE_ID_MEDIATEK_MT7961),
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.driver_data = (kernel_ulong_t)&mt7921_data },
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{ } /* Terminating entry */
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};
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MODULE_DEVICE_TABLE(sdio, btmtksdio_table);
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#define MTK_REG_CHLPCR 0x4 /* W1S */
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#define C_INT_EN_SET BIT(0)
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#define C_INT_EN_CLR BIT(1)
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#define C_FW_OWN_REQ_SET BIT(8) /* For write */
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#define C_COM_DRV_OWN BIT(8) /* For read */
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#define C_FW_OWN_REQ_CLR BIT(9)
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#define MTK_REG_CSDIOCSR 0x8
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#define SDIO_RE_INIT_EN BIT(0)
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#define SDIO_INT_CTL BIT(2)
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#define MTK_REG_CHCR 0xc
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#define C_INT_CLR_CTRL BIT(1)
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#define BT_RST_DONE BIT(8)
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/* CHISR have the same bits field definition with CHIER */
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#define MTK_REG_CHISR 0x10
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#define MTK_REG_CHIER 0x14
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#define FW_OWN_BACK_INT BIT(0)
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#define RX_DONE_INT BIT(1)
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#define TX_EMPTY BIT(2)
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#define TX_FIFO_OVERFLOW BIT(8)
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#define FW_MAILBOX_INT BIT(15)
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#define INT_MASK GENMASK(15, 0)
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#define RX_PKT_LEN GENMASK(31, 16)
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#define MTK_REG_CSICR 0xc0
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#define CSICR_CLR_MBOX_ACK BIT(0)
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#define MTK_REG_PH2DSM0R 0xc4
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#define PH2DSM0R_DRIVER_OWN BIT(0)
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#define MTK_REG_PD2HRM0R 0xdc
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#define PD2HRM0R_DRV_OWN BIT(0)
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#define MTK_REG_CTDR 0x18
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#define MTK_REG_CRDR 0x1c
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#define MTK_REG_CRPLR 0x24
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#define MTK_SDIO_BLOCK_SIZE 256
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#define BTMTKSDIO_TX_WAIT_VND_EVT 1
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#define BTMTKSDIO_HW_TX_READY 2
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#define BTMTKSDIO_FUNC_ENABLED 3
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#define BTMTKSDIO_PATCH_ENABLED 4
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#define BTMTKSDIO_HW_RESET_ACTIVE 5
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#define BTMTKSDIO_BT_WAKE_ENABLED 6
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struct mtkbtsdio_hdr {
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__le16 len;
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__le16 reserved;
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u8 bt_type;
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} __packed;
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struct btmtksdio_dev {
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struct hci_dev *hdev;
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struct sdio_func *func;
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struct device *dev;
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struct work_struct txrx_work;
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unsigned long tx_state;
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struct sk_buff_head txq;
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struct sk_buff *evt_skb;
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const struct btmtksdio_data *data;
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struct gpio_desc *reset;
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};
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static int mtk_hci_wmt_sync(struct hci_dev *hdev,
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struct btmtk_hci_wmt_params *wmt_params)
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{
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struct btmtksdio_dev *bdev = hci_get_drvdata(hdev);
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struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
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struct btmtk_hci_wmt_evt_reg *wmt_evt_reg;
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u32 hlen, status = BTMTK_WMT_INVALID;
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struct btmtk_hci_wmt_evt *wmt_evt;
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struct btmtk_hci_wmt_cmd *wc;
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struct btmtk_wmt_hdr *hdr;
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int err;
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/* Send the WMT command and wait until the WMT event returns */
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hlen = sizeof(*hdr) + wmt_params->dlen;
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if (hlen > 255)
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return -EINVAL;
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wc = kzalloc(hlen, GFP_KERNEL);
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if (!wc)
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return -ENOMEM;
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hdr = &wc->hdr;
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hdr->dir = 1;
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hdr->op = wmt_params->op;
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hdr->dlen = cpu_to_le16(wmt_params->dlen + 1);
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hdr->flag = wmt_params->flag;
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memcpy(wc->data, wmt_params->data, wmt_params->dlen);
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set_bit(BTMTKSDIO_TX_WAIT_VND_EVT, &bdev->tx_state);
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err = __hci_cmd_send(hdev, 0xfc6f, hlen, wc);
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if (err < 0) {
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clear_bit(BTMTKSDIO_TX_WAIT_VND_EVT, &bdev->tx_state);
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goto err_free_wc;
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}
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/* The vendor specific WMT commands are all answered by a vendor
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* specific event and will not have the Command Status or Command
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* Complete as with usual HCI command flow control.
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*
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* After sending the command, wait for BTMTKSDIO_TX_WAIT_VND_EVT
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* state to be cleared. The driver specific event receive routine
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* will clear that state and with that indicate completion of the
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* WMT command.
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*/
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err = wait_on_bit_timeout(&bdev->tx_state, BTMTKSDIO_TX_WAIT_VND_EVT,
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TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
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if (err == -EINTR) {
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bt_dev_err(hdev, "Execution of wmt command interrupted");
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clear_bit(BTMTKSDIO_TX_WAIT_VND_EVT, &bdev->tx_state);
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goto err_free_wc;
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}
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if (err) {
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bt_dev_err(hdev, "Execution of wmt command timed out");
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clear_bit(BTMTKSDIO_TX_WAIT_VND_EVT, &bdev->tx_state);
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err = -ETIMEDOUT;
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goto err_free_wc;
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}
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/* Parse and handle the return WMT event */
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wmt_evt = (struct btmtk_hci_wmt_evt *)bdev->evt_skb->data;
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if (wmt_evt->whdr.op != hdr->op) {
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bt_dev_err(hdev, "Wrong op received %d expected %d",
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wmt_evt->whdr.op, hdr->op);
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err = -EIO;
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goto err_free_skb;
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}
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switch (wmt_evt->whdr.op) {
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case BTMTK_WMT_SEMAPHORE:
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if (wmt_evt->whdr.flag == 2)
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status = BTMTK_WMT_PATCH_UNDONE;
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else
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status = BTMTK_WMT_PATCH_DONE;
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break;
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case BTMTK_WMT_FUNC_CTRL:
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wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt;
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if (be16_to_cpu(wmt_evt_funcc->status) == 0x404)
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status = BTMTK_WMT_ON_DONE;
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else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420)
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status = BTMTK_WMT_ON_PROGRESS;
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else
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status = BTMTK_WMT_ON_UNDONE;
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break;
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case BTMTK_WMT_PATCH_DWNLD:
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if (wmt_evt->whdr.flag == 2)
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status = BTMTK_WMT_PATCH_DONE;
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else if (wmt_evt->whdr.flag == 1)
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status = BTMTK_WMT_PATCH_PROGRESS;
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else
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status = BTMTK_WMT_PATCH_UNDONE;
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break;
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case BTMTK_WMT_REGISTER:
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wmt_evt_reg = (struct btmtk_hci_wmt_evt_reg *)wmt_evt;
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if (le16_to_cpu(wmt_evt->whdr.dlen) == 12)
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status = le32_to_cpu(wmt_evt_reg->val);
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break;
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}
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if (wmt_params->status)
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*wmt_params->status = status;
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err_free_skb:
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kfree_skb(bdev->evt_skb);
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bdev->evt_skb = NULL;
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err_free_wc:
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kfree(wc);
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return err;
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}
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static int btmtksdio_tx_packet(struct btmtksdio_dev *bdev,
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struct sk_buff *skb)
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{
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struct mtkbtsdio_hdr *sdio_hdr;
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int err;
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/* Make sure that there are enough rooms for SDIO header */
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if (unlikely(skb_headroom(skb) < sizeof(*sdio_hdr))) {
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err = pskb_expand_head(skb, sizeof(*sdio_hdr), 0,
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GFP_ATOMIC);
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if (err < 0)
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return err;
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}
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/* Prepend MediaTek SDIO Specific Header */
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skb_push(skb, sizeof(*sdio_hdr));
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sdio_hdr = (void *)skb->data;
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sdio_hdr->len = cpu_to_le16(skb->len);
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sdio_hdr->reserved = cpu_to_le16(0);
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sdio_hdr->bt_type = hci_skb_pkt_type(skb);
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clear_bit(BTMTKSDIO_HW_TX_READY, &bdev->tx_state);
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err = sdio_writesb(bdev->func, MTK_REG_CTDR, skb->data,
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round_up(skb->len, MTK_SDIO_BLOCK_SIZE));
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if (err < 0)
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goto err_skb_pull;
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bdev->hdev->stat.byte_tx += skb->len;
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kfree_skb(skb);
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return 0;
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err_skb_pull:
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skb_pull(skb, sizeof(*sdio_hdr));
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return err;
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}
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static u32 btmtksdio_drv_own_query(struct btmtksdio_dev *bdev)
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{
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return sdio_readl(bdev->func, MTK_REG_CHLPCR, NULL);
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}
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static u32 btmtksdio_drv_own_query_79xx(struct btmtksdio_dev *bdev)
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{
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return sdio_readl(bdev->func, MTK_REG_PD2HRM0R, NULL);
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}
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static u32 btmtksdio_chcr_query(struct btmtksdio_dev *bdev)
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{
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return sdio_readl(bdev->func, MTK_REG_CHCR, NULL);
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}
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static int btmtksdio_fw_pmctrl(struct btmtksdio_dev *bdev)
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{
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u32 status;
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int err;
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sdio_claim_host(bdev->func);
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if (bdev->data->lp_mbox_supported &&
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test_bit(BTMTKSDIO_PATCH_ENABLED, &bdev->tx_state)) {
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sdio_writel(bdev->func, CSICR_CLR_MBOX_ACK, MTK_REG_CSICR,
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&err);
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err = readx_poll_timeout(btmtksdio_drv_own_query_79xx, bdev,
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status, !(status & PD2HRM0R_DRV_OWN),
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2000, 1000000);
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if (err < 0) {
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bt_dev_err(bdev->hdev, "mailbox ACK not cleared");
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goto out;
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}
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}
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/* Return ownership to the device */
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sdio_writel(bdev->func, C_FW_OWN_REQ_SET, MTK_REG_CHLPCR, &err);
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if (err < 0)
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goto out;
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err = readx_poll_timeout(btmtksdio_drv_own_query, bdev, status,
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!(status & C_COM_DRV_OWN), 2000, 1000000);
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out:
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sdio_release_host(bdev->func);
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if (err < 0)
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bt_dev_err(bdev->hdev, "Cannot return ownership to device");
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return err;
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}
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static int btmtksdio_drv_pmctrl(struct btmtksdio_dev *bdev)
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{
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u32 status;
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int err;
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sdio_claim_host(bdev->func);
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/* Get ownership from the device */
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sdio_writel(bdev->func, C_FW_OWN_REQ_CLR, MTK_REG_CHLPCR, &err);
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if (err < 0)
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goto out;
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err = readx_poll_timeout(btmtksdio_drv_own_query, bdev, status,
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status & C_COM_DRV_OWN, 2000, 1000000);
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if (!err && bdev->data->lp_mbox_supported &&
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test_bit(BTMTKSDIO_PATCH_ENABLED, &bdev->tx_state))
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err = readx_poll_timeout(btmtksdio_drv_own_query_79xx, bdev,
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status, status & PD2HRM0R_DRV_OWN,
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2000, 1000000);
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out:
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sdio_release_host(bdev->func);
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if (err < 0)
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bt_dev_err(bdev->hdev, "Cannot get ownership from device");
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return err;
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}
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static int btmtksdio_recv_event(struct hci_dev *hdev, struct sk_buff *skb)
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{
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struct btmtksdio_dev *bdev = hci_get_drvdata(hdev);
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struct hci_event_hdr *hdr = (void *)skb->data;
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u8 evt = hdr->evt;
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int err;
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/* When someone waits for the WMT event, the skb is being cloned
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* and being processed the events from there then.
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*/
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if (test_bit(BTMTKSDIO_TX_WAIT_VND_EVT, &bdev->tx_state)) {
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bdev->evt_skb = skb_clone(skb, GFP_KERNEL);
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if (!bdev->evt_skb) {
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err = -ENOMEM;
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goto err_out;
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}
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}
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err = hci_recv_frame(hdev, skb);
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if (err < 0)
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goto err_free_skb;
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if (evt == HCI_EV_WMT) {
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if (test_and_clear_bit(BTMTKSDIO_TX_WAIT_VND_EVT,
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&bdev->tx_state)) {
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/* Barrier to sync with other CPUs */
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smp_mb__after_atomic();
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wake_up_bit(&bdev->tx_state, BTMTKSDIO_TX_WAIT_VND_EVT);
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}
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}
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return 0;
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err_free_skb:
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kfree_skb(bdev->evt_skb);
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bdev->evt_skb = NULL;
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err_out:
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return err;
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}
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static int btmtksdio_recv_acl(struct hci_dev *hdev, struct sk_buff *skb)
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{
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struct btmtksdio_dev *bdev = hci_get_drvdata(hdev);
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u16 handle = le16_to_cpu(hci_acl_hdr(skb)->handle);
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switch (handle) {
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case 0xfc6f:
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/* Firmware dump from device: when the firmware hangs, the
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* device can no longer suspend and thus disable auto-suspend.
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*/
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pm_runtime_forbid(bdev->dev);
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fallthrough;
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case 0x05ff:
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case 0x05fe:
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/* Firmware debug logging */
|
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return hci_recv_diag(hdev, skb);
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}
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|
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return hci_recv_frame(hdev, skb);
|
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}
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|
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static const struct h4_recv_pkt mtk_recv_pkts[] = {
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{ H4_RECV_ACL, .recv = btmtksdio_recv_acl },
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{ H4_RECV_SCO, .recv = hci_recv_frame },
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{ H4_RECV_EVENT, .recv = btmtksdio_recv_event },
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};
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|
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static int btmtksdio_rx_packet(struct btmtksdio_dev *bdev, u16 rx_size)
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{
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const struct h4_recv_pkt *pkts = mtk_recv_pkts;
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int pkts_count = ARRAY_SIZE(mtk_recv_pkts);
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struct mtkbtsdio_hdr *sdio_hdr;
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int err, i, pad_size;
|
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struct sk_buff *skb;
|
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u16 dlen;
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|
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if (rx_size < sizeof(*sdio_hdr))
|
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return -EILSEQ;
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|
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/* A SDIO packet is exactly containing a Bluetooth packet */
|
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skb = bt_skb_alloc(rx_size, GFP_KERNEL);
|
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if (!skb)
|
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return -ENOMEM;
|
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|
|
skb_put(skb, rx_size);
|
|
|
|
err = sdio_readsb(bdev->func, skb->data, MTK_REG_CRDR, rx_size);
|
|
if (err < 0)
|
|
goto err_kfree_skb;
|
|
|
|
sdio_hdr = (void *)skb->data;
|
|
|
|
/* We assume the default error as -EILSEQ simply to make the error path
|
|
* be cleaner.
|
|
*/
|
|
err = -EILSEQ;
|
|
|
|
if (rx_size != le16_to_cpu(sdio_hdr->len)) {
|
|
bt_dev_err(bdev->hdev, "Rx size in sdio header is mismatched ");
|
|
goto err_kfree_skb;
|
|
}
|
|
|
|
hci_skb_pkt_type(skb) = sdio_hdr->bt_type;
|
|
|
|
/* Remove MediaTek SDIO header */
|
|
skb_pull(skb, sizeof(*sdio_hdr));
|
|
|
|
/* We have to dig into the packet to get payload size and then know how
|
|
* many padding bytes at the tail, these padding bytes should be removed
|
|
* before the packet is indicated to the core layer.
|
|
*/
|
|
for (i = 0; i < pkts_count; i++) {
|
|
if (sdio_hdr->bt_type == (&pkts[i])->type)
|
|
break;
|
|
}
|
|
|
|
if (i >= pkts_count) {
|
|
bt_dev_err(bdev->hdev, "Invalid bt type 0x%02x",
|
|
sdio_hdr->bt_type);
|
|
goto err_kfree_skb;
|
|
}
|
|
|
|
/* Remaining bytes cannot hold a header*/
|
|
if (skb->len < (&pkts[i])->hlen) {
|
|
bt_dev_err(bdev->hdev, "The size of bt header is mismatched");
|
|
goto err_kfree_skb;
|
|
}
|
|
|
|
switch ((&pkts[i])->lsize) {
|
|
case 1:
|
|
dlen = skb->data[(&pkts[i])->loff];
|
|
break;
|
|
case 2:
|
|
dlen = get_unaligned_le16(skb->data +
|
|
(&pkts[i])->loff);
|
|
break;
|
|
default:
|
|
goto err_kfree_skb;
|
|
}
|
|
|
|
pad_size = skb->len - (&pkts[i])->hlen - dlen;
|
|
|
|
/* Remaining bytes cannot hold a payload */
|
|
if (pad_size < 0) {
|
|
bt_dev_err(bdev->hdev, "The size of bt payload is mismatched");
|
|
goto err_kfree_skb;
|
|
}
|
|
|
|
/* Remove padding bytes */
|
|
skb_trim(skb, skb->len - pad_size);
|
|
|
|
/* Complete frame */
|
|
(&pkts[i])->recv(bdev->hdev, skb);
|
|
|
|
bdev->hdev->stat.byte_rx += rx_size;
|
|
|
|
return 0;
|
|
|
|
err_kfree_skb:
|
|
kfree_skb(skb);
|
|
|
|
return err;
|
|
}
|
|
|
|
static void btmtksdio_txrx_work(struct work_struct *work)
|
|
{
|
|
struct btmtksdio_dev *bdev = container_of(work, struct btmtksdio_dev,
|
|
txrx_work);
|
|
unsigned long txrx_timeout;
|
|
u32 int_status, rx_size;
|
|
struct sk_buff *skb;
|
|
int err;
|
|
|
|
pm_runtime_get_sync(bdev->dev);
|
|
|
|
sdio_claim_host(bdev->func);
|
|
|
|
/* Disable interrupt */
|
|
sdio_writel(bdev->func, C_INT_EN_CLR, MTK_REG_CHLPCR, NULL);
|
|
|
|
txrx_timeout = jiffies + 5 * HZ;
|
|
|
|
do {
|
|
int_status = sdio_readl(bdev->func, MTK_REG_CHISR, NULL);
|
|
|
|
/* Ack an interrupt as soon as possible before any operation on
|
|
* hardware.
|
|
*
|
|
* Note that we don't ack any status during operations to avoid race
|
|
* condition between the host and the device such as it's possible to
|
|
* mistakenly ack RX_DONE for the next packet and then cause interrupts
|
|
* not be raised again but there is still pending data in the hardware
|
|
* FIFO.
|
|
*/
|
|
sdio_writel(bdev->func, int_status, MTK_REG_CHISR, NULL);
|
|
int_status &= INT_MASK;
|
|
|
|
if ((int_status & FW_MAILBOX_INT) &&
|
|
bdev->data->chipid == 0x7921) {
|
|
sdio_writel(bdev->func, PH2DSM0R_DRIVER_OWN,
|
|
MTK_REG_PH2DSM0R, NULL);
|
|
}
|
|
|
|
if (int_status & FW_OWN_BACK_INT)
|
|
bt_dev_dbg(bdev->hdev, "Get fw own back");
|
|
|
|
if (int_status & TX_EMPTY)
|
|
set_bit(BTMTKSDIO_HW_TX_READY, &bdev->tx_state);
|
|
|
|
else if (unlikely(int_status & TX_FIFO_OVERFLOW))
|
|
bt_dev_warn(bdev->hdev, "Tx fifo overflow");
|
|
|
|
if (test_bit(BTMTKSDIO_HW_TX_READY, &bdev->tx_state)) {
|
|
skb = skb_dequeue(&bdev->txq);
|
|
if (skb) {
|
|
err = btmtksdio_tx_packet(bdev, skb);
|
|
if (err < 0) {
|
|
bdev->hdev->stat.err_tx++;
|
|
skb_queue_head(&bdev->txq, skb);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (int_status & RX_DONE_INT) {
|
|
rx_size = sdio_readl(bdev->func, MTK_REG_CRPLR, NULL);
|
|
rx_size = (rx_size & RX_PKT_LEN) >> 16;
|
|
if (btmtksdio_rx_packet(bdev, rx_size) < 0)
|
|
bdev->hdev->stat.err_rx++;
|
|
}
|
|
} while (int_status || time_is_before_jiffies(txrx_timeout));
|
|
|
|
/* Enable interrupt */
|
|
sdio_writel(bdev->func, C_INT_EN_SET, MTK_REG_CHLPCR, NULL);
|
|
|
|
sdio_release_host(bdev->func);
|
|
|
|
pm_runtime_mark_last_busy(bdev->dev);
|
|
pm_runtime_put_autosuspend(bdev->dev);
|
|
}
|
|
|
|
static void btmtksdio_interrupt(struct sdio_func *func)
|
|
{
|
|
struct btmtksdio_dev *bdev = sdio_get_drvdata(func);
|
|
|
|
if (test_bit(BTMTKSDIO_BT_WAKE_ENABLED, &bdev->tx_state)) {
|
|
if (bdev->hdev->suspended)
|
|
pm_wakeup_event(bdev->dev, 0);
|
|
clear_bit(BTMTKSDIO_BT_WAKE_ENABLED, &bdev->tx_state);
|
|
}
|
|
|
|
/* Disable interrupt */
|
|
sdio_writel(bdev->func, C_INT_EN_CLR, MTK_REG_CHLPCR, NULL);
|
|
|
|
schedule_work(&bdev->txrx_work);
|
|
}
|
|
|
|
static int btmtksdio_open(struct hci_dev *hdev)
|
|
{
|
|
struct btmtksdio_dev *bdev = hci_get_drvdata(hdev);
|
|
u32 val;
|
|
int err;
|
|
|
|
sdio_claim_host(bdev->func);
|
|
|
|
err = sdio_enable_func(bdev->func);
|
|
if (err < 0)
|
|
goto err_release_host;
|
|
|
|
set_bit(BTMTKSDIO_FUNC_ENABLED, &bdev->tx_state);
|
|
|
|
err = btmtksdio_drv_pmctrl(bdev);
|
|
if (err < 0)
|
|
goto err_disable_func;
|
|
|
|
/* Disable interrupt & mask out all interrupt sources */
|
|
sdio_writel(bdev->func, C_INT_EN_CLR, MTK_REG_CHLPCR, &err);
|
|
if (err < 0)
|
|
goto err_disable_func;
|
|
|
|
sdio_writel(bdev->func, 0, MTK_REG_CHIER, &err);
|
|
if (err < 0)
|
|
goto err_disable_func;
|
|
|
|
err = sdio_claim_irq(bdev->func, btmtksdio_interrupt);
|
|
if (err < 0)
|
|
goto err_disable_func;
|
|
|
|
err = sdio_set_block_size(bdev->func, MTK_SDIO_BLOCK_SIZE);
|
|
if (err < 0)
|
|
goto err_release_irq;
|
|
|
|
/* SDIO CMD 5 allows the SDIO device back to idle state an
|
|
* synchronous interrupt is supported in SDIO 4-bit mode
|
|
*/
|
|
val = sdio_readl(bdev->func, MTK_REG_CSDIOCSR, &err);
|
|
if (err < 0)
|
|
goto err_release_irq;
|
|
|
|
val |= SDIO_INT_CTL;
|
|
sdio_writel(bdev->func, val, MTK_REG_CSDIOCSR, &err);
|
|
if (err < 0)
|
|
goto err_release_irq;
|
|
|
|
/* Explitly set write-1-clear method */
|
|
val = sdio_readl(bdev->func, MTK_REG_CHCR, &err);
|
|
if (err < 0)
|
|
goto err_release_irq;
|
|
|
|
val |= C_INT_CLR_CTRL;
|
|
sdio_writel(bdev->func, val, MTK_REG_CHCR, &err);
|
|
if (err < 0)
|
|
goto err_release_irq;
|
|
|
|
/* Setup interrupt sources */
|
|
sdio_writel(bdev->func, RX_DONE_INT | TX_EMPTY | TX_FIFO_OVERFLOW,
|
|
MTK_REG_CHIER, &err);
|
|
if (err < 0)
|
|
goto err_release_irq;
|
|
|
|
/* Enable interrupt */
|
|
sdio_writel(bdev->func, C_INT_EN_SET, MTK_REG_CHLPCR, &err);
|
|
if (err < 0)
|
|
goto err_release_irq;
|
|
|
|
sdio_release_host(bdev->func);
|
|
|
|
return 0;
|
|
|
|
err_release_irq:
|
|
sdio_release_irq(bdev->func);
|
|
|
|
err_disable_func:
|
|
sdio_disable_func(bdev->func);
|
|
|
|
err_release_host:
|
|
sdio_release_host(bdev->func);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int btmtksdio_close(struct hci_dev *hdev)
|
|
{
|
|
struct btmtksdio_dev *bdev = hci_get_drvdata(hdev);
|
|
|
|
sdio_claim_host(bdev->func);
|
|
|
|
/* Disable interrupt */
|
|
sdio_writel(bdev->func, C_INT_EN_CLR, MTK_REG_CHLPCR, NULL);
|
|
|
|
sdio_release_irq(bdev->func);
|
|
|
|
cancel_work_sync(&bdev->txrx_work);
|
|
|
|
btmtksdio_fw_pmctrl(bdev);
|
|
|
|
clear_bit(BTMTKSDIO_FUNC_ENABLED, &bdev->tx_state);
|
|
sdio_disable_func(bdev->func);
|
|
|
|
sdio_release_host(bdev->func);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int btmtksdio_flush(struct hci_dev *hdev)
|
|
{
|
|
struct btmtksdio_dev *bdev = hci_get_drvdata(hdev);
|
|
|
|
skb_queue_purge(&bdev->txq);
|
|
|
|
cancel_work_sync(&bdev->txrx_work);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int btmtksdio_func_query(struct hci_dev *hdev)
|
|
{
|
|
struct btmtk_hci_wmt_params wmt_params;
|
|
int status, err;
|
|
u8 param = 0;
|
|
|
|
/* Query whether the function is enabled */
|
|
wmt_params.op = BTMTK_WMT_FUNC_CTRL;
|
|
wmt_params.flag = 4;
|
|
wmt_params.dlen = sizeof(param);
|
|
wmt_params.data = ¶m;
|
|
wmt_params.status = &status;
|
|
|
|
err = mtk_hci_wmt_sync(hdev, &wmt_params);
|
|
if (err < 0) {
|
|
bt_dev_err(hdev, "Failed to query function status (%d)", err);
|
|
return err;
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
static int mt76xx_setup(struct hci_dev *hdev, const char *fwname)
|
|
{
|
|
struct btmtksdio_dev *bdev = hci_get_drvdata(hdev);
|
|
struct btmtk_hci_wmt_params wmt_params;
|
|
struct btmtk_tci_sleep tci_sleep;
|
|
struct sk_buff *skb;
|
|
int err, status;
|
|
u8 param = 0x1;
|
|
|
|
/* Query whether the firmware is already download */
|
|
wmt_params.op = BTMTK_WMT_SEMAPHORE;
|
|
wmt_params.flag = 1;
|
|
wmt_params.dlen = 0;
|
|
wmt_params.data = NULL;
|
|
wmt_params.status = &status;
|
|
|
|
err = mtk_hci_wmt_sync(hdev, &wmt_params);
|
|
if (err < 0) {
|
|
bt_dev_err(hdev, "Failed to query firmware status (%d)", err);
|
|
return err;
|
|
}
|
|
|
|
if (status == BTMTK_WMT_PATCH_DONE) {
|
|
bt_dev_info(hdev, "Firmware already downloaded");
|
|
goto ignore_setup_fw;
|
|
}
|
|
|
|
/* Setup a firmware which the device definitely requires */
|
|
err = btmtk_setup_firmware(hdev, fwname, mtk_hci_wmt_sync);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
ignore_setup_fw:
|
|
/* Query whether the device is already enabled */
|
|
err = readx_poll_timeout(btmtksdio_func_query, hdev, status,
|
|
status < 0 || status != BTMTK_WMT_ON_PROGRESS,
|
|
2000, 5000000);
|
|
/* -ETIMEDOUT happens */
|
|
if (err < 0)
|
|
return err;
|
|
|
|
/* The other errors happen in btusb_mtk_func_query */
|
|
if (status < 0)
|
|
return status;
|
|
|
|
if (status == BTMTK_WMT_ON_DONE) {
|
|
bt_dev_info(hdev, "function already on");
|
|
goto ignore_func_on;
|
|
}
|
|
|
|
/* Enable Bluetooth protocol */
|
|
wmt_params.op = BTMTK_WMT_FUNC_CTRL;
|
|
wmt_params.flag = 0;
|
|
wmt_params.dlen = sizeof(param);
|
|
wmt_params.data = ¶m;
|
|
wmt_params.status = NULL;
|
|
|
|
err = mtk_hci_wmt_sync(hdev, &wmt_params);
|
|
if (err < 0) {
|
|
bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
|
|
return err;
|
|
}
|
|
|
|
set_bit(BTMTKSDIO_PATCH_ENABLED, &bdev->tx_state);
|
|
|
|
ignore_func_on:
|
|
/* Apply the low power environment setup */
|
|
tci_sleep.mode = 0x5;
|
|
tci_sleep.duration = cpu_to_le16(0x640);
|
|
tci_sleep.host_duration = cpu_to_le16(0x640);
|
|
tci_sleep.host_wakeup_pin = 0;
|
|
tci_sleep.time_compensation = 0;
|
|
|
|
skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep,
|
|
HCI_INIT_TIMEOUT);
|
|
if (IS_ERR(skb)) {
|
|
err = PTR_ERR(skb);
|
|
bt_dev_err(hdev, "Failed to apply low power setting (%d)", err);
|
|
return err;
|
|
}
|
|
kfree_skb(skb);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mt79xx_setup(struct hci_dev *hdev, const char *fwname)
|
|
{
|
|
struct btmtksdio_dev *bdev = hci_get_drvdata(hdev);
|
|
struct btmtk_hci_wmt_params wmt_params;
|
|
u8 param = 0x1;
|
|
int err;
|
|
|
|
err = btmtk_setup_firmware_79xx(hdev, fwname, mtk_hci_wmt_sync);
|
|
if (err < 0) {
|
|
bt_dev_err(hdev, "Failed to setup 79xx firmware (%d)", err);
|
|
return err;
|
|
}
|
|
|
|
err = btmtksdio_fw_pmctrl(bdev);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = btmtksdio_drv_pmctrl(bdev);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
/* Enable Bluetooth protocol */
|
|
wmt_params.op = BTMTK_WMT_FUNC_CTRL;
|
|
wmt_params.flag = 0;
|
|
wmt_params.dlen = sizeof(param);
|
|
wmt_params.data = ¶m;
|
|
wmt_params.status = NULL;
|
|
|
|
err = mtk_hci_wmt_sync(hdev, &wmt_params);
|
|
if (err < 0) {
|
|
bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
|
|
return err;
|
|
}
|
|
|
|
hci_set_msft_opcode(hdev, 0xFD30);
|
|
hci_set_aosp_capable(hdev);
|
|
set_bit(BTMTKSDIO_PATCH_ENABLED, &bdev->tx_state);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int btmtksdio_mtk_reg_read(struct hci_dev *hdev, u32 reg, u32 *val)
|
|
{
|
|
struct btmtk_hci_wmt_params wmt_params;
|
|
struct reg_read_cmd reg_read = {
|
|
.type = 1,
|
|
.num = 1,
|
|
};
|
|
u32 status;
|
|
int err;
|
|
|
|
reg_read.addr = cpu_to_le32(reg);
|
|
wmt_params.op = BTMTK_WMT_REGISTER;
|
|
wmt_params.flag = BTMTK_WMT_REG_READ;
|
|
wmt_params.dlen = sizeof(reg_read);
|
|
wmt_params.data = ®_read;
|
|
wmt_params.status = &status;
|
|
|
|
err = mtk_hci_wmt_sync(hdev, &wmt_params);
|
|
if (err < 0) {
|
|
bt_dev_err(hdev, "Failed to read reg (%d)", err);
|
|
return err;
|
|
}
|
|
|
|
*val = status;
|
|
|
|
return err;
|
|
}
|
|
|
|
static int btmtksdio_mtk_reg_write(struct hci_dev *hdev, u32 reg, u32 val, u32 mask)
|
|
{
|
|
struct btmtk_hci_wmt_params wmt_params;
|
|
const struct reg_write_cmd reg_write = {
|
|
.type = 1,
|
|
.num = 1,
|
|
.addr = cpu_to_le32(reg),
|
|
.data = cpu_to_le32(val),
|
|
.mask = cpu_to_le32(mask),
|
|
};
|
|
int err, status;
|
|
|
|
wmt_params.op = BTMTK_WMT_REGISTER;
|
|
wmt_params.flag = BTMTK_WMT_REG_WRITE;
|
|
wmt_params.dlen = sizeof(reg_write);
|
|
wmt_params.data = ®_write;
|
|
wmt_params.status = &status;
|
|
|
|
err = mtk_hci_wmt_sync(hdev, &wmt_params);
|
|
if (err < 0)
|
|
bt_dev_err(hdev, "Failed to write reg (%d)", err);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int btmtksdio_get_data_path_id(struct hci_dev *hdev, __u8 *data_path_id)
|
|
{
|
|
/* uses 1 as data path id for all the usecases */
|
|
*data_path_id = 1;
|
|
return 0;
|
|
}
|
|
|
|
static int btmtksdio_get_codec_config_data(struct hci_dev *hdev,
|
|
__u8 link, struct bt_codec *codec,
|
|
__u8 *ven_len, __u8 **ven_data)
|
|
{
|
|
int err = 0;
|
|
|
|
if (!ven_data || !ven_len)
|
|
return -EINVAL;
|
|
|
|
*ven_len = 0;
|
|
*ven_data = NULL;
|
|
|
|
if (link != ESCO_LINK) {
|
|
bt_dev_err(hdev, "Invalid link type(%u)", link);
|
|
return -EINVAL;
|
|
}
|
|
|
|
*ven_data = kmalloc(sizeof(__u8), GFP_KERNEL);
|
|
if (!*ven_data) {
|
|
err = -ENOMEM;
|
|
goto error;
|
|
}
|
|
|
|
/* supports only CVSD and mSBC offload codecs */
|
|
switch (codec->id) {
|
|
case 0x02:
|
|
**ven_data = 0x00;
|
|
break;
|
|
case 0x05:
|
|
**ven_data = 0x01;
|
|
break;
|
|
default:
|
|
err = -EINVAL;
|
|
bt_dev_err(hdev, "Invalid codec id(%u)", codec->id);
|
|
goto error;
|
|
}
|
|
/* codec and its capabilities are pre-defined to ids
|
|
* preset id = 0x00 represents CVSD codec with sampling rate 8K
|
|
* preset id = 0x01 represents mSBC codec with sampling rate 16K
|
|
*/
|
|
*ven_len = sizeof(__u8);
|
|
return err;
|
|
|
|
error:
|
|
kfree(*ven_data);
|
|
*ven_data = NULL;
|
|
return err;
|
|
}
|
|
|
|
static int btmtksdio_sco_setting(struct hci_dev *hdev)
|
|
{
|
|
const struct btmtk_sco sco_setting = {
|
|
.clock_config = 0x49,
|
|
.channel_format_config = 0x80,
|
|
};
|
|
struct sk_buff *skb;
|
|
u32 val;
|
|
int err;
|
|
|
|
/* Enable SCO over I2S/PCM for MediaTek chipset */
|
|
skb = __hci_cmd_sync(hdev, 0xfc72, sizeof(sco_setting),
|
|
&sco_setting, HCI_CMD_TIMEOUT);
|
|
if (IS_ERR(skb))
|
|
return PTR_ERR(skb);
|
|
|
|
kfree_skb(skb);
|
|
|
|
err = btmtksdio_mtk_reg_read(hdev, MT7921_PINMUX_0, &val);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
val |= 0x11000000;
|
|
err = btmtksdio_mtk_reg_write(hdev, MT7921_PINMUX_0, val, ~0);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = btmtksdio_mtk_reg_read(hdev, MT7921_PINMUX_1, &val);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
val |= 0x00000101;
|
|
err = btmtksdio_mtk_reg_write(hdev, MT7921_PINMUX_1, val, ~0);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
hdev->get_data_path_id = btmtksdio_get_data_path_id;
|
|
hdev->get_codec_config_data = btmtksdio_get_codec_config_data;
|
|
|
|
return err;
|
|
}
|
|
|
|
static int btmtksdio_reset_setting(struct hci_dev *hdev)
|
|
{
|
|
int err;
|
|
u32 val;
|
|
|
|
err = btmtksdio_mtk_reg_read(hdev, MT7921_PINMUX_1, &val);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
val |= 0x20; /* set the pin (bit field 11:8) work as GPIO mode */
|
|
err = btmtksdio_mtk_reg_write(hdev, MT7921_PINMUX_1, val, ~0);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = btmtksdio_mtk_reg_read(hdev, MT7921_BTSYS_RST, &val);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
val |= MT7921_BTSYS_RST_WITH_GPIO;
|
|
return btmtksdio_mtk_reg_write(hdev, MT7921_BTSYS_RST, val, ~0);
|
|
}
|
|
|
|
static int btmtksdio_setup(struct hci_dev *hdev)
|
|
{
|
|
struct btmtksdio_dev *bdev = hci_get_drvdata(hdev);
|
|
ktime_t calltime, delta, rettime;
|
|
unsigned long long duration;
|
|
char fwname[64];
|
|
int err, dev_id;
|
|
u32 fw_version = 0, val;
|
|
|
|
calltime = ktime_get();
|
|
set_bit(BTMTKSDIO_HW_TX_READY, &bdev->tx_state);
|
|
|
|
switch (bdev->data->chipid) {
|
|
case 0x7921:
|
|
if (test_bit(BTMTKSDIO_HW_RESET_ACTIVE, &bdev->tx_state)) {
|
|
err = btmtksdio_mtk_reg_read(hdev, MT7921_DLSTATUS,
|
|
&val);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
val &= ~BT_DL_STATE;
|
|
err = btmtksdio_mtk_reg_write(hdev, MT7921_DLSTATUS,
|
|
val, ~0);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
btmtksdio_fw_pmctrl(bdev);
|
|
msleep(20);
|
|
btmtksdio_drv_pmctrl(bdev);
|
|
|
|
clear_bit(BTMTKSDIO_HW_RESET_ACTIVE, &bdev->tx_state);
|
|
}
|
|
|
|
err = btmtksdio_mtk_reg_read(hdev, 0x70010200, &dev_id);
|
|
if (err < 0) {
|
|
bt_dev_err(hdev, "Failed to get device id (%d)", err);
|
|
return err;
|
|
}
|
|
|
|
err = btmtksdio_mtk_reg_read(hdev, 0x80021004, &fw_version);
|
|
if (err < 0) {
|
|
bt_dev_err(hdev, "Failed to get fw version (%d)", err);
|
|
return err;
|
|
}
|
|
|
|
snprintf(fwname, sizeof(fwname),
|
|
"mediatek/BT_RAM_CODE_MT%04x_1_%x_hdr.bin",
|
|
dev_id & 0xffff, (fw_version & 0xff) + 1);
|
|
err = mt79xx_setup(hdev, fwname);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
/* Enable SCO over I2S/PCM */
|
|
err = btmtksdio_sco_setting(hdev);
|
|
if (err < 0) {
|
|
bt_dev_err(hdev, "Failed to enable SCO setting (%d)", err);
|
|
return err;
|
|
}
|
|
|
|
/* Enable WBS with mSBC codec */
|
|
set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
|
|
|
|
/* Enable GPIO reset mechanism */
|
|
if (bdev->reset) {
|
|
err = btmtksdio_reset_setting(hdev);
|
|
if (err < 0) {
|
|
bt_dev_err(hdev, "Failed to enable Reset setting (%d)", err);
|
|
devm_gpiod_put(bdev->dev, bdev->reset);
|
|
bdev->reset = NULL;
|
|
}
|
|
}
|
|
|
|
/* Valid LE States quirk for MediaTek 7921 */
|
|
set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
|
|
|
|
break;
|
|
case 0x7663:
|
|
case 0x7668:
|
|
err = mt76xx_setup(hdev, bdev->data->fwname);
|
|
if (err < 0)
|
|
return err;
|
|
break;
|
|
default:
|
|
return -ENODEV;
|
|
}
|
|
|
|
rettime = ktime_get();
|
|
delta = ktime_sub(rettime, calltime);
|
|
duration = (unsigned long long)ktime_to_ns(delta) >> 10;
|
|
|
|
pm_runtime_set_autosuspend_delay(bdev->dev,
|
|
MTKBTSDIO_AUTOSUSPEND_DELAY);
|
|
pm_runtime_use_autosuspend(bdev->dev);
|
|
|
|
err = pm_runtime_set_active(bdev->dev);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
/* Default forbid runtime auto suspend, that can be allowed by
|
|
* enable_autosuspend flag or the PM runtime entry under sysfs.
|
|
*/
|
|
pm_runtime_forbid(bdev->dev);
|
|
pm_runtime_enable(bdev->dev);
|
|
|
|
if (enable_autosuspend)
|
|
pm_runtime_allow(bdev->dev);
|
|
|
|
bt_dev_info(hdev, "Device setup in %llu usecs", duration);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int btmtksdio_shutdown(struct hci_dev *hdev)
|
|
{
|
|
struct btmtksdio_dev *bdev = hci_get_drvdata(hdev);
|
|
struct btmtk_hci_wmt_params wmt_params;
|
|
u8 param = 0x0;
|
|
int err;
|
|
|
|
/* Get back the state to be consistent with the state
|
|
* in btmtksdio_setup.
|
|
*/
|
|
pm_runtime_get_sync(bdev->dev);
|
|
|
|
/* wmt command only works until the reset is complete */
|
|
if (test_bit(BTMTKSDIO_HW_RESET_ACTIVE, &bdev->tx_state))
|
|
goto ignore_wmt_cmd;
|
|
|
|
/* Disable the device */
|
|
wmt_params.op = BTMTK_WMT_FUNC_CTRL;
|
|
wmt_params.flag = 0;
|
|
wmt_params.dlen = sizeof(param);
|
|
wmt_params.data = ¶m;
|
|
wmt_params.status = NULL;
|
|
|
|
err = mtk_hci_wmt_sync(hdev, &wmt_params);
|
|
if (err < 0) {
|
|
bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
|
|
return err;
|
|
}
|
|
|
|
ignore_wmt_cmd:
|
|
pm_runtime_put_noidle(bdev->dev);
|
|
pm_runtime_disable(bdev->dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int btmtksdio_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
|
|
{
|
|
struct btmtksdio_dev *bdev = hci_get_drvdata(hdev);
|
|
|
|
switch (hci_skb_pkt_type(skb)) {
|
|
case HCI_COMMAND_PKT:
|
|
hdev->stat.cmd_tx++;
|
|
break;
|
|
|
|
case HCI_ACLDATA_PKT:
|
|
hdev->stat.acl_tx++;
|
|
break;
|
|
|
|
case HCI_SCODATA_PKT:
|
|
hdev->stat.sco_tx++;
|
|
break;
|
|
|
|
default:
|
|
return -EILSEQ;
|
|
}
|
|
|
|
skb_queue_tail(&bdev->txq, skb);
|
|
|
|
schedule_work(&bdev->txrx_work);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void btmtksdio_cmd_timeout(struct hci_dev *hdev)
|
|
{
|
|
struct btmtksdio_dev *bdev = hci_get_drvdata(hdev);
|
|
u32 status;
|
|
int err;
|
|
|
|
if (!bdev->reset || bdev->data->chipid != 0x7921)
|
|
return;
|
|
|
|
pm_runtime_get_sync(bdev->dev);
|
|
|
|
if (test_and_set_bit(BTMTKSDIO_HW_RESET_ACTIVE, &bdev->tx_state))
|
|
return;
|
|
|
|
sdio_claim_host(bdev->func);
|
|
|
|
sdio_writel(bdev->func, C_INT_EN_CLR, MTK_REG_CHLPCR, NULL);
|
|
skb_queue_purge(&bdev->txq);
|
|
cancel_work_sync(&bdev->txrx_work);
|
|
|
|
gpiod_set_value_cansleep(bdev->reset, 1);
|
|
msleep(100);
|
|
gpiod_set_value_cansleep(bdev->reset, 0);
|
|
|
|
err = readx_poll_timeout(btmtksdio_chcr_query, bdev, status,
|
|
status & BT_RST_DONE, 100000, 2000000);
|
|
if (err < 0) {
|
|
bt_dev_err(hdev, "Failed to reset (%d)", err);
|
|
goto err;
|
|
}
|
|
|
|
clear_bit(BTMTKSDIO_PATCH_ENABLED, &bdev->tx_state);
|
|
err:
|
|
sdio_release_host(bdev->func);
|
|
|
|
pm_runtime_put_noidle(bdev->dev);
|
|
pm_runtime_disable(bdev->dev);
|
|
|
|
hci_reset_dev(hdev);
|
|
}
|
|
|
|
static bool btmtksdio_sdio_inband_wakeup(struct hci_dev *hdev)
|
|
{
|
|
struct btmtksdio_dev *bdev = hci_get_drvdata(hdev);
|
|
|
|
return device_may_wakeup(bdev->dev);
|
|
}
|
|
|
|
static bool btmtksdio_sdio_wakeup(struct hci_dev *hdev)
|
|
{
|
|
struct btmtksdio_dev *bdev = hci_get_drvdata(hdev);
|
|
bool may_wakeup = device_may_wakeup(bdev->dev);
|
|
const struct btmtk_wakeon bt_awake = {
|
|
.mode = 0x1,
|
|
.gpo = 0,
|
|
.active_high = 0x1,
|
|
.enable_delay = cpu_to_le16(0xc80),
|
|
.wakeup_delay = cpu_to_le16(0x20),
|
|
};
|
|
|
|
if (may_wakeup && bdev->data->chipid == 0x7921) {
|
|
struct sk_buff *skb;
|
|
|
|
skb = __hci_cmd_sync(hdev, 0xfc27, sizeof(bt_awake),
|
|
&bt_awake, HCI_CMD_TIMEOUT);
|
|
if (IS_ERR(skb))
|
|
may_wakeup = false;
|
|
else
|
|
kfree_skb(skb);
|
|
}
|
|
|
|
return may_wakeup;
|
|
}
|
|
|
|
static int btmtksdio_probe(struct sdio_func *func,
|
|
const struct sdio_device_id *id)
|
|
{
|
|
struct btmtksdio_dev *bdev;
|
|
struct hci_dev *hdev;
|
|
int err;
|
|
|
|
bdev = devm_kzalloc(&func->dev, sizeof(*bdev), GFP_KERNEL);
|
|
if (!bdev)
|
|
return -ENOMEM;
|
|
|
|
bdev->data = (void *)id->driver_data;
|
|
if (!bdev->data)
|
|
return -ENODEV;
|
|
|
|
bdev->dev = &func->dev;
|
|
bdev->func = func;
|
|
|
|
INIT_WORK(&bdev->txrx_work, btmtksdio_txrx_work);
|
|
skb_queue_head_init(&bdev->txq);
|
|
|
|
/* Initialize and register HCI device */
|
|
hdev = hci_alloc_dev();
|
|
if (!hdev) {
|
|
dev_err(&func->dev, "Can't allocate HCI device\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
bdev->hdev = hdev;
|
|
|
|
hdev->bus = HCI_SDIO;
|
|
hci_set_drvdata(hdev, bdev);
|
|
|
|
hdev->open = btmtksdio_open;
|
|
hdev->close = btmtksdio_close;
|
|
hdev->cmd_timeout = btmtksdio_cmd_timeout;
|
|
hdev->flush = btmtksdio_flush;
|
|
hdev->setup = btmtksdio_setup;
|
|
hdev->shutdown = btmtksdio_shutdown;
|
|
hdev->send = btmtksdio_send_frame;
|
|
hdev->wakeup = btmtksdio_sdio_wakeup;
|
|
/*
|
|
* If SDIO controller supports wake on Bluetooth, sending a wakeon
|
|
* command is not necessary.
|
|
*/
|
|
if (device_can_wakeup(func->card->host->parent))
|
|
hdev->wakeup = btmtksdio_sdio_inband_wakeup;
|
|
else
|
|
hdev->wakeup = btmtksdio_sdio_wakeup;
|
|
hdev->set_bdaddr = btmtk_set_bdaddr;
|
|
|
|
SET_HCIDEV_DEV(hdev, &func->dev);
|
|
|
|
hdev->manufacturer = 70;
|
|
set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
|
|
|
|
sdio_set_drvdata(func, bdev);
|
|
|
|
err = hci_register_dev(hdev);
|
|
if (err < 0) {
|
|
dev_err(&func->dev, "Can't register HCI device\n");
|
|
hci_free_dev(hdev);
|
|
return err;
|
|
}
|
|
|
|
/* pm_runtime_enable would be done after the firmware is being
|
|
* downloaded because the core layer probably already enables
|
|
* runtime PM for this func such as the case host->caps &
|
|
* MMC_CAP_POWER_OFF_CARD.
|
|
*/
|
|
if (pm_runtime_enabled(bdev->dev))
|
|
pm_runtime_disable(bdev->dev);
|
|
|
|
/* As explaination in drivers/mmc/core/sdio_bus.c tells us:
|
|
* Unbound SDIO functions are always suspended.
|
|
* During probe, the function is set active and the usage count
|
|
* is incremented. If the driver supports runtime PM,
|
|
* it should call pm_runtime_put_noidle() in its probe routine and
|
|
* pm_runtime_get_noresume() in its remove routine.
|
|
*
|
|
* So, put a pm_runtime_put_noidle here !
|
|
*/
|
|
pm_runtime_put_noidle(bdev->dev);
|
|
|
|
err = device_init_wakeup(bdev->dev, true);
|
|
if (err)
|
|
bt_dev_err(hdev, "failed to initialize device wakeup");
|
|
|
|
bdev->dev->of_node = of_find_compatible_node(NULL, NULL,
|
|
"mediatek,mt7921s-bluetooth");
|
|
bdev->reset = devm_gpiod_get_optional(bdev->dev, "reset",
|
|
GPIOD_OUT_LOW);
|
|
if (IS_ERR(bdev->reset))
|
|
err = PTR_ERR(bdev->reset);
|
|
|
|
return err;
|
|
}
|
|
|
|
static void btmtksdio_remove(struct sdio_func *func)
|
|
{
|
|
struct btmtksdio_dev *bdev = sdio_get_drvdata(func);
|
|
struct hci_dev *hdev;
|
|
|
|
if (!bdev)
|
|
return;
|
|
|
|
/* Be consistent the state in btmtksdio_probe */
|
|
pm_runtime_get_noresume(bdev->dev);
|
|
|
|
hdev = bdev->hdev;
|
|
|
|
sdio_set_drvdata(func, NULL);
|
|
hci_unregister_dev(hdev);
|
|
hci_free_dev(hdev);
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int btmtksdio_runtime_suspend(struct device *dev)
|
|
{
|
|
struct sdio_func *func = dev_to_sdio_func(dev);
|
|
struct btmtksdio_dev *bdev;
|
|
int err;
|
|
|
|
bdev = sdio_get_drvdata(func);
|
|
if (!bdev)
|
|
return 0;
|
|
|
|
if (!test_bit(BTMTKSDIO_FUNC_ENABLED, &bdev->tx_state))
|
|
return 0;
|
|
|
|
sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
|
|
|
|
err = btmtksdio_fw_pmctrl(bdev);
|
|
|
|
bt_dev_dbg(bdev->hdev, "status (%d) return ownership to device", err);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int btmtksdio_system_suspend(struct device *dev)
|
|
{
|
|
struct sdio_func *func = dev_to_sdio_func(dev);
|
|
struct btmtksdio_dev *bdev;
|
|
|
|
bdev = sdio_get_drvdata(func);
|
|
if (!bdev)
|
|
return 0;
|
|
|
|
if (!test_bit(BTMTKSDIO_FUNC_ENABLED, &bdev->tx_state))
|
|
return 0;
|
|
|
|
set_bit(BTMTKSDIO_BT_WAKE_ENABLED, &bdev->tx_state);
|
|
|
|
return btmtksdio_runtime_suspend(dev);
|
|
}
|
|
|
|
static int btmtksdio_runtime_resume(struct device *dev)
|
|
{
|
|
struct sdio_func *func = dev_to_sdio_func(dev);
|
|
struct btmtksdio_dev *bdev;
|
|
int err;
|
|
|
|
bdev = sdio_get_drvdata(func);
|
|
if (!bdev)
|
|
return 0;
|
|
|
|
if (!test_bit(BTMTKSDIO_FUNC_ENABLED, &bdev->tx_state))
|
|
return 0;
|
|
|
|
err = btmtksdio_drv_pmctrl(bdev);
|
|
|
|
bt_dev_dbg(bdev->hdev, "status (%d) get ownership from device", err);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int btmtksdio_system_resume(struct device *dev)
|
|
{
|
|
return btmtksdio_runtime_resume(dev);
|
|
}
|
|
|
|
static const struct dev_pm_ops btmtksdio_pm_ops = {
|
|
SYSTEM_SLEEP_PM_OPS(btmtksdio_system_suspend, btmtksdio_system_resume)
|
|
RUNTIME_PM_OPS(btmtksdio_runtime_suspend, btmtksdio_runtime_resume, NULL)
|
|
};
|
|
|
|
#define BTMTKSDIO_PM_OPS (&btmtksdio_pm_ops)
|
|
#else /* CONFIG_PM */
|
|
#define BTMTKSDIO_PM_OPS NULL
|
|
#endif /* CONFIG_PM */
|
|
|
|
static struct sdio_driver btmtksdio_driver = {
|
|
.name = "btmtksdio",
|
|
.probe = btmtksdio_probe,
|
|
.remove = btmtksdio_remove,
|
|
.id_table = btmtksdio_table,
|
|
.drv = {
|
|
.owner = THIS_MODULE,
|
|
.pm = BTMTKSDIO_PM_OPS,
|
|
}
|
|
};
|
|
|
|
module_sdio_driver(btmtksdio_driver);
|
|
|
|
module_param(enable_autosuspend, bool, 0644);
|
|
MODULE_PARM_DESC(enable_autosuspend, "Enable autosuspend by default");
|
|
|
|
MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>");
|
|
MODULE_DESCRIPTION("MediaTek Bluetooth SDIO driver ver " VERSION);
|
|
MODULE_VERSION(VERSION);
|
|
MODULE_LICENSE("GPL");
|