linux-kernel - Re: [PATCH] bus: mhi: host: Add support for Cinterion MV32-WA/MV32-WB

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Date:   Wed, 20 Apr 2022 14:00:23 +0200
From:   Loic Poulain <loic.poulain@...aro.org>
To:     Slark Xiao <slark_xiao@....com>
Cc:     mani@...nel.org, quic_hemantk@...cinc.com,
        gregkh@...uxfoundation.org, bbhatt@...eaurora.org,
        christophe.jaillet@...adoo.fr, mhi@...ts.linux.dev,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] bus: mhi: host: Add support for Cinterion MV32-WA/MV32-WB

Hi Slark,

On Wed, 20 Apr 2022 at 12:28, Slark Xiao <slark_xiao@....com> wrote:
>
> MV32-WA is designed based on Qualcomm SDX62, and
> MV32-WB is designed based on QUalcomm SDX65. Both
> products' enumeration would align with previous
> product MV31-W.
> Add some new items for mv32 to separate it from
> mv31-w, in case we need to do any changes in
> future.

On the contrary, do not overly clone the structures, and re-use the
mv31 ones if they apply. You can rename them to mv3x if you really
want to.

Regards,
Loic



>
> Signed-off-by: Slark Xiao <slark_xiao@....com>
> ---
>  drivers/bus/mhi/host/pci_generic.c | 41 ++++++++++++++++++++++++++++++
>  1 file changed, 41 insertions(+)
>
> diff --git a/drivers/bus/mhi/host/pci_generic.c b/drivers/bus/mhi/host/pci_generic.c
> index 541ced27d941..a2da40340df7 100644
> --- a/drivers/bus/mhi/host/pci_generic.c
> +++ b/drivers/bus/mhi/host/pci_generic.c
> @@ -406,6 +406,41 @@ static const struct mhi_pci_dev_info mhi_mv31_info = {
>         .mru_default = 32768,
>  };
>
> +static const struct mhi_channel_config mhi_mv32_channels[] = {
> +       MHI_CHANNEL_CONFIG_UL(0, "LOOPBACK", 64, 0),
> +       MHI_CHANNEL_CONFIG_DL(1, "LOOPBACK", 64, 0),
> +       /* MBIM Control Channel */
> +       MHI_CHANNEL_CONFIG_UL(12, "MBIM", 64, 0),
> +       MHI_CHANNEL_CONFIG_DL(13, "MBIM", 64, 0),
> +       /* MBIM Data Channel */
> +       MHI_CHANNEL_CONFIG_HW_UL(100, "IP_HW0_MBIM", 512, 2),
> +       MHI_CHANNEL_CONFIG_HW_DL(101, "IP_HW0_MBIM", 512, 3),
> +};
> +
> +static struct mhi_event_config mhi_mv32_events[] = {
> +       MHI_EVENT_CONFIG_CTRL(0, 256),
> +       MHI_EVENT_CONFIG_DATA(1, 256),
> +       MHI_EVENT_CONFIG_HW_DATA(2, 1024, 100),
> +       MHI_EVENT_CONFIG_HW_DATA(3, 1024, 101),
> +};
> +
> +static const struct mhi_controller_config modem_mv32_config = {
> +       .max_channels = 128,
> +       .timeout_ms = 20000,
> +       .num_channels = ARRAY_SIZE(mhi_mv32_channels),
> +       .ch_cfg = mhi_mv32_channels,
> +       .num_events = ARRAY_SIZE(mhi_mv32_events),
> +       .event_cfg = mhi_mv32_events,
> +};
> +
> +static const struct mhi_pci_dev_info mhi_mv32_info = {
> +       .name = "cinterion-mv32",
> +       .config = &modem_mv32_config,
> +       .bar_num = MHI_PCI_DEFAULT_BAR_NUM,
> +       .dma_data_width = 32,
> +       .mru_default = 32768,
> +};
> +
>  static const struct mhi_channel_config mhi_sierra_em919x_channels[] = {
>         MHI_CHANNEL_CONFIG_UL_SBL(2, "SAHARA", 32, 0),
>         MHI_CHANNEL_CONFIG_DL_SBL(3, "SAHARA", 256, 0),
> @@ -475,6 +510,12 @@ static const struct pci_device_id mhi_pci_id_table[] = {
>         /* MV31-W (Cinterion) */
>         { PCI_DEVICE(0x1269, 0x00b3),
>                 .driver_data = (kernel_ulong_t) &mhi_mv31_info },
> +       /* MV32-WA (Cinterion) */
> +       { PCI_DEVICE(0x1269, 0x00ba),
> +               .driver_data = (kernel_ulong_t) &mhi_mv32_info },
> +       /* MV32-WB (Cinterion) */
> +       { PCI_DEVICE(0x1269, 0x00bb),
> +               .driver_data = (kernel_ulong_t) &mhi_mv32_info },
>         {  }
>  };
>  MODULE_DEVICE_TABLE(pci, mhi_pci_id_table);
> --
> 2.25.1
>