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   1 Index: linux-5.15.58/drivers/bus/mhi/pci_generic.c
   2 ===================================================================
   3 --- linux-5.15.58.orig/drivers/bus/mhi/pci_generic.c
   4 +++ linux-5.15.58/drivers/bus/mhi/pci_generic.c
   5 @@ -406,6 +406,46 @@ static const struct mhi_pci_dev_info mhi
   6         .mru_default = 32768,
   7  };
   8
   9 +static const struct mhi_channel_config mhi_sierra_em919x_channels[] = {
  10 +       MHI_CHANNEL_CONFIG_UL_SBL(2, "SAHARA", 32, 0),
  11 +       MHI_CHANNEL_CONFIG_DL_SBL(3, "SAHARA", 256, 0),
  12 +       MHI_CHANNEL_CONFIG_UL(4, "DIAG", 32, 0),
  13 +       MHI_CHANNEL_CONFIG_DL(5, "DIAG", 32, 0),
  14 +       MHI_CHANNEL_CONFIG_UL(12, "MBIM", 128, 0),
  15 +       MHI_CHANNEL_CONFIG_DL(13, "MBIM", 128, 0),
  16 +       MHI_CHANNEL_CONFIG_UL(14, "QMI", 32, 0),
  17 +       MHI_CHANNEL_CONFIG_DL(15, "QMI", 32, 0),
  18 +       MHI_CHANNEL_CONFIG_UL(32, "DUN", 32, 0),
  19 +       MHI_CHANNEL_CONFIG_DL(33, "DUN", 32, 0),
  20 +       MHI_CHANNEL_CONFIG_HW_UL(100, "IP_HW0", 512, 1),
  21 +       MHI_CHANNEL_CONFIG_HW_DL(101, "IP_HW0", 512, 2),
  22 +};
  23 +
  24 +static struct mhi_event_config modem_sierra_em919x_mhi_events[] = {
  25 +       /* first ring is control+data and DIAG ring */
  26 +       MHI_EVENT_CONFIG_CTRL(0, 2048),
  27 +       /* Hardware channels request dedicated hardware event rings */
  28 +       MHI_EVENT_CONFIG_HW_DATA(1, 2048, 100),
  29 +       MHI_EVENT_CONFIG_HW_DATA(2, 2048, 101)
  30 +};
  31 +
  32 +static const struct mhi_controller_config modem_sierra_em919x_config = {
  33 +       .max_channels = 128,
  34 +       .timeout_ms = 24000,
  35 +       .num_channels = ARRAY_SIZE(mhi_sierra_em919x_channels),
  36 +       .ch_cfg = mhi_sierra_em919x_channels,
  37 +       .num_events = ARRAY_SIZE(modem_sierra_em919x_mhi_events),
  38 +       .event_cfg = modem_sierra_em919x_mhi_events,
  39 +};
  40 +
  41 +static const struct mhi_pci_dev_info mhi_sierra_em919x_info = {
  42 +       .name = "sierra-em919x",
  43 +       .config = &modem_sierra_em919x_config,
  44 +       .bar_num = MHI_PCI_DEFAULT_BAR_NUM,
  45 +       .dma_data_width = 32,
  46 +       .sideband_wake = false,
  47 +};
  48 +
  49  static const struct mhi_channel_config mhi_telit_fn980_hw_v1_channels[] = {
  50         MHI_CHANNEL_CONFIG_UL(14, "QMI", 32, 0),
  51         MHI_CHANNEL_CONFIG_DL(15, "QMI", 32, 0),
  52 @@ -480,6 +520,9 @@ static const struct mhi_pci_dev_info mhi
  53  };
  54
  55  static const struct pci_device_id mhi_pci_id_table[] = {
  56 +       /* EM919x (sdx55), use the same vid:pid as qcom-sdx55m */
  57 +       { PCI_DEVICE_SUB(PCI_VENDOR_ID_QCOM, 0x0306, 0x18d7, 0x0200),
  58 +               .driver_data = (kernel_ulong_t) &mhi_sierra_em919x_info },
  59         /* Telit FN980 hardware revision v1 */
  60         { PCI_DEVICE_SUB(PCI_VENDOR_ID_QCOM, 0x0306, 0x1C5D, 0x2000),
  61                 .driver_data = (kernel_ulong_t) &mhi_telit_fn980_hw_v1_info },