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Message-Id: <E84B037B-C0C2-4890-A4BD-94BECC074E59@holtmann.org>
Date: Fri, 13 Dec 2019 08:41:03 +0100
From: Marcel Holtmann <marcel@...tmann.org>
To: Rocky Liao <rjliao@...eaurora.org>
Cc: Johan Hedberg <johan.hedberg@...il.com>,
lkml <linux-kernel@...r.kernel.org>,
linux-bluetooth@...r.kernel.org,
linux-bluetooth-owner@...r.kernel.org
Subject: Re: [PATCH v1 1/2] Bluetooth: hci_qca: Add support for Qualcomm
Bluetooth SoC QCA6390
Hi Rocky,
>>>> This patch add support for QCA6390.
>>>
>>> can we please be a bit more descriptive on what support we are adding.
>>>
>>>>
>>>> Signed-off-by: Rocky Liao <rjliao@...eaurora.org>
>>>> ---
>>>> drivers/bluetooth/btqca.c | 32 +++++++++++++++++++++--------
>>>> drivers/bluetooth/btqca.h | 1 +
>>>> drivers/bluetooth/hci_qca.c | 40 ++++++++++++++++++++++++++++++++++---
>>>> 3 files changed, 62 insertions(+), 11 deletions(-)
>>>>
>>>> diff --git a/drivers/bluetooth/btqca.c b/drivers/bluetooth/btqca.c
>>>> index ec69e5dd7bd3..75990223e5e3 100644
>>>> --- a/drivers/bluetooth/btqca.c
>>>> +++ b/drivers/bluetooth/btqca.c
>>>> @@ -13,6 +13,8 @@
>>>> #include "btqca.h"
>>>>
>>>> #define VERSION "0.1"
>>>
>>> Lets put an extra empty line here.
>> OK
>>
>>>
>>>> +#define QCA_IS_3991_6390(soc_type) \
>>>> + ((soc_type == QCA_WCN3991) || (soc_type == QCA_QCA6390))
>>>
>>> Actually (a == b || c == d) is enough.
>>>
>>> I rather do ((a) == b || (c) == d) to ensure the parameter is properly
>>> protected. It is not needed in this case since the usage is simple.
>> OK
>>
>>>
>>>>
>>>> int qca_read_soc_version(struct hci_dev *hdev, u32 *soc_version,
>>>> enum qca_btsoc_type soc_type)
>>>> @@ -32,7 +34,7 @@ int qca_read_soc_version(struct hci_dev *hdev, u32 *soc_version,
>>>> * VSE event. WCN3991 sends version command response as a payload to
>>>> * command complete event.
>>>> */
>>>> - if (soc_type == QCA_WCN3991) {
>>>> + if (QCA_IS_3991_6390(soc_type)) {
>>>> event_type = 0;
>>>> rlen += 1;
>>>> rtype = EDL_PATCH_VER_REQ_CMD;
>>>> @@ -69,7 +71,7 @@ int qca_read_soc_version(struct hci_dev *hdev, u32 *soc_version,
>>>> goto out;
>>>> }
>>>>
>>>> - if (soc_type == QCA_WCN3991)
>>>> + if ((QCA_IS_3991_6390(soc_type)))
>>>> memmove(&edl->data, &edl->data[1], sizeof(*ver));
>>>
>>> Maybe these should just be turned into a switch statement and not
>>> using some macro.
>> Prefer to use macro or a simple function call, there are many places
>> called this and use switch will make code complex
>>
>>>>
>>>> ver = (struct qca_btsoc_version *)(edl->data);
>>>> @@ -139,7 +141,7 @@ int qca_send_pre_shutdown_cmd(struct hci_dev *hdev)
>>>> EXPORT_SYMBOL_GPL(qca_send_pre_shutdown_cmd);
>>>>
>>>> static void qca_tlv_check_data(struct qca_fw_config *config,
>>>> - const struct firmware *fw)
>>>> + const struct firmware *fw, enum qca_btsoc_type soc_type)
>>>> {
>>>> const u8 *data;
>>>> u32 type_len;
>>>> @@ -148,6 +150,7 @@ static void qca_tlv_check_data(struct qca_fw_config *config,
>>>> struct tlv_type_hdr *tlv;
>>>> struct tlv_type_patch *tlv_patch;
>>>> struct tlv_type_nvm *tlv_nvm;
>>>> + uint8_t nvm_baud_rate = config->user_baud_rate;
>>>>
>>>> tlv = (struct tlv_type_hdr *)fw->data;
>>>>
>>>> @@ -213,10 +216,14 @@ static void qca_tlv_check_data(struct qca_fw_config *config,
>>>> * enabling software inband sleep
>>>> * onto controller side.
>>>> */
>>>> - tlv_nvm->data[0] |= 0x80;
>>>> + if (!QCA_IS_3991_6390(soc_type))
>>>> + tlv_nvm->data[0] |= 0x80;
>>>>
>>>> /* UART Baud Rate */
>>>> - tlv_nvm->data[2] = config->user_baud_rate;
>>>> + if ((QCA_IS_3991_6390(soc_type)))
>>>> + tlv_nvm->data[1] = nvm_baud_rate;
>>>> + else
>>>> + tlv_nvm->data[2] = nvm_baud_rate;
>>>
>>> These two changes are not related to the QCA6390 support. Leave them
>>> out and if changes are needed to fix other hardware, then send them as
>>> separate patch.
>> OK
>>
>>>>
>>>> break;
>>>>
>>>> @@ -264,7 +271,7 @@ static int qca_tlv_send_segment(struct hci_dev *hdev, int seg_size,
>>>> * VSE event. WCN3991 sends version command response as a payload to
>>>> * command complete event.
>>>> */
>>>> - if (soc_type == QCA_WCN3991) {
>>>> + if ((QCA_IS_3991_6390(soc_type))) {
>>>> event_type = 0;
>>>> rlen = sizeof(*edl);
>>>> rtype = EDL_PATCH_TLV_REQ_CMD;
>>>> @@ -297,7 +304,7 @@ static int qca_tlv_send_segment(struct hci_dev *hdev, int seg_size,
>>>> err = -EIO;
>>>> }
>>>>
>>>> - if (soc_type == QCA_WCN3991)
>>>> + if ((QCA_IS_3991_6390(soc_type)))
>>>> goto out;
>>>>
>>>> tlv_resp = (struct tlv_seg_resp *)(edl->data);
>>>> @@ -354,7 +361,7 @@ static int qca_download_firmware(struct hci_dev *hdev,
>>>> return ret;
>>>> }
>>>>
>>>> - qca_tlv_check_data(config, fw);
>>>> + qca_tlv_check_data(config, fw, soc_type);
>>>>
>>>> segment = fw->data;
>>>> remain = fw->size;
>>>> @@ -438,6 +445,12 @@ int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
>>>> (soc_ver & 0x0000000f);
>>>> snprintf(config.fwname, sizeof(config.fwname),
>>>> "qca/crbtfw%02x.tlv", rom_ver);
>>>> + } else if (soc_type == QCA_QCA6390) {
>>>> + rom_ver = ((soc_ver & 0x00000f00) >> 0x04) |
>>>> + (soc_ver & 0x0000000f);
>>>> + snprintf(config.fwname, sizeof(config.fwname),
>>>> + "qca/htbtfw%02x.tlv", rom_ver);
>>>> +
>>>> } else {
>>>> snprintf(config.fwname, sizeof(config.fwname),
>>>> "qca/rampatch_%08x.bin", soc_ver);
>>>> @@ -460,6 +473,9 @@ int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
>>>> else if (qca_is_wcn399x(soc_type))
>>>> snprintf(config.fwname, sizeof(config.fwname),
>>>> "qca/crnv%02x.bin", rom_ver);
>>>> + else if (soc_type == QCA_QCA6390)
>>>> + snprintf(config.fwname, sizeof(config.fwname),
>>>> + "qca/htnv%02x.bin", rom_ver);
>>>> else
>>>> snprintf(config.fwname, sizeof(config.fwname),
>>>> "qca/nvm_%08x.bin", soc_ver);
>>>> diff --git a/drivers/bluetooth/btqca.h b/drivers/bluetooth/btqca.h
>>>> index f5795b1a3779..2f06ed7e1c50 100644
>>>> --- a/drivers/bluetooth/btqca.h
>>>> +++ b/drivers/bluetooth/btqca.h
>>>> @@ -127,6 +127,7 @@ enum qca_btsoc_type {
>>>> QCA_WCN3990,
>>>> QCA_WCN3991,
>>>> QCA_WCN3998,
>>>> + QCA_QCA6390,
>>>> };
>>>>
>>>> #if IS_ENABLED(CONFIG_BT_QCA)
>>>> diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
>>>> index f10bdf8e1fc5..472f468145e8 100644
>>>> --- a/drivers/bluetooth/hci_qca.c
>>>> +++ b/drivers/bluetooth/hci_qca.c
>>>> @@ -25,6 +25,7 @@
>>>> #include <linux/mod_devicetable.h>
>>>> #include <linux/module.h>
>>>> #include <linux/of_device.h>
>>>> +#include <linux/acpi.h>
>>>> #include <linux/platform_device.h>
>>>> #include <linux/regulator/consumer.h>
>>>> #include <linux/serdev.h>
>>>> @@ -1355,6 +1356,16 @@ static const struct hci_uart_proto qca_proto = {
>>>> .dequeue = qca_dequeue,
>>>> };
>>>>
>>>> +static const struct qca_vreg_data qca_soc_data_qca6174 = {
>>>> + .soc_type = QCA_ROME,
>>>> + .num_vregs = 0,
>>>> +};
>>>> +
>>>> +static const struct qca_vreg_data qca_soc_data_qca6390 = {
>>>> + .soc_type = QCA_QCA6390,
>>>> + .num_vregs = 0,
>>>> +};
>>>> +
>>>> static const struct qca_vreg_data qca_soc_data_wcn3990 = {
>>>> .soc_type = QCA_WCN3990,
>>>> .vregs = (struct qca_vreg []) {
>>>> @@ -1501,7 +1512,7 @@ static int qca_serdev_probe(struct serdev_device *serdev)
>>>> return -ENOMEM;
>>>>
>>>> qcadev->serdev_hu.serdev = serdev;
>>>> - data = of_device_get_match_data(&serdev->dev);
>>>> + data = device_get_match_data(&serdev->dev);
>>>
>>> I would address this in a separate patch since it seems you are
>>> actually fixing QCA6174 support as well. Or is this because the new
>>> platform is ACPI based. I can’t tell since you are missing a proper
>>> commit message.
>> OK
>>>> serdev_device_set_drvdata(serdev, qcadev);
>>>> device_property_read_string(&serdev->dev, "firmware-name",
>>>> &qcadev->firmware_name);
>>>> @@ -1534,7 +1545,10 @@ static int qca_serdev_probe(struct serdev_device *serdev)
>>>> goto out;
>>>> }
>>>> } else {
>>>> - qcadev->btsoc_type = QCA_ROME;
>>>> + if (data)
>>>> + qcadev->btsoc_type = data->soc_type;
>>>> + else
>>>> + qcadev->btsoc_type = QCA_ROME;
>>>> qcadev->bt_en = devm_gpiod_get(&serdev->dev, "enable",
>>>> GPIOD_OUT_LOW);
>>>> if (IS_ERR(qcadev->bt_en)) {
>>>> @@ -1670,21 +1684,41 @@ static int __maybe_unused qca_resume(struct device *dev)
>>>>
>>>> static SIMPLE_DEV_PM_OPS(qca_pm_ops, qca_suspend, qca_resume);
>>>>
>>>> +#ifdef CONFIG_OF
>>>> static const struct of_device_id qca_bluetooth_of_match[] = {
>>>> - { .compatible = "qcom,qca6174-bt" },
>>>> + { .compatible = "qcom,qca6174-bt" .data = &qca_soc_data_qca6174},
>>>
>>> So this should be clearly a separate patch as mentioned above.
>> OK
>>>> + { .compatible = "qcom,qca6390-bt" .data = &qca_soc_data_qca6390},
>>>> { .compatible = "qcom,wcn3990-bt", .data = &qca_soc_data_wcn3990},
>>>> { .compatible = "qcom,wcn3991-bt", .data = &qca_soc_data_wcn3991},
>>>> { .compatible = "qcom,wcn3998-bt", .data = &qca_soc_data_wcn3998},
>>>> { /* sentinel */ }
>>>> };
>>>> MODULE_DEVICE_TABLE(of, qca_bluetooth_of_match);
>>>> +#endif
>>>> +
>>>> +#ifdef CONFIG_ACPI
>>>> +static const struct acpi_device_id qca_bluetooth_acpi_match[] = {
>>>> + { "QCOM6390", (kernel_ulong_t)&qca_soc_data_qca6390 },
>>>> + { "DLA16390", (kernel_ulong_t)&qca_soc_data_qca6390 },
>>>> + { "DLB16390", (kernel_ulong_t)&qca_soc_data_qca6390 },
>>>> + { "DLB26390", (kernel_ulong_t)&qca_soc_data_qca6390 },
>>>> + { },
>>>> +};
>>>> +MODULE_DEVICE_TABLE(acpi, qca_bluetooth_acpi_match);
>>>> +#endif
>>>> +
>>>>
>>>> static struct serdev_device_driver qca_serdev_driver = {
>>>> .probe = qca_serdev_probe,
>>>> .remove = qca_serdev_remove,
>>>> .driver = {
>>>> .name = "hci_uart_qca",
>>>> + #ifdef CONFIG_OF
>>>> .of_match_table = qca_bluetooth_of_match,
>>>> + #endif
>>>> + #ifdef CONFIG_ACPI
>>>> + .acpi_match_table = ACPI_PTR(qca_bluetooth_acpi_match),
>>>> + #endif
>>>
>>> These ifdefs are not needed. The ACPI_PTR does this automatically and
>>> there is another macro for OF as well that you can use.
>> OK
>>>> .pm = &qca_pm_ops,
>>>> },
>>>> };
>>>
>>> Where is the patch addressing Kconfig dependency? If you support ACPI
>>> and DT platforms now, you need that.
>> OK
> I am a bit confusing what kind of Kconfig change is required,the driver shoud
> be able to work no matter it's ACPI or DT platform. We should have no
> dependency on ACPI or DT, right?
can this driver work without ACPI or DT? The other drivers have some dependency on ACPI or DT.
Regards
Marcel
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