From 565798fc143a4d7d34384fd87456f53e7dacb846 Mon Sep 17 00:00:00 2001 From: Andrejs Cainikovs Date: Fri, 22 Apr 2022 11:03:12 +0200 Subject: mwifiex: Select firmware based on strapping MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit commit 255ca28a659d3cfb069f73c7644853ed93aecdb0 upstream. Some WiFi/Bluetooth modules might have different host connection options, allowing to either use SDIO for both WiFi and Bluetooth, or SDIO for WiFi and UART for Bluetooth. It is possible to detect whether a module has SDIO-SDIO or SDIO-UART connection by reading its host strap register. This change introduces a way to automatically select appropriate firmware depending of the connection method, and removes a need of symlinking or overwriting the original firmware file with a required one. Host strap register used in this commit comes from the NXP driver [1] hosted at Code Aurora. [1] https://source.codeaurora.org/external/imx/linux-imx/tree/drivers/net/wireless/nxp/mxm_wifiex/wlan_src/mlinux/moal_sdio_mmc.c?h=rel_imx_5.4.70_2.3.2&id=688b67b2c7220b01521ffe560da7eee33042c7bd#n1274 Signed-off-by: Andrejs Cainikovs Reviewed-by: Alvin Šipraga Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20220422090313.125857-2-andrejs.cainikovs@toradex.com --- drivers/net/wireless/marvell/mwifiex/sdio.c | 15 ++++++++++++++- drivers/net/wireless/marvell/mwifiex/sdio.h | 11 +++++++++++ 2 files changed, 25 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/marvell/mwifiex/sdio.c b/drivers/net/wireless/marvell/mwifiex/sdio.c index b322c2755e9a..6e4e24073d20 100644 --- a/drivers/net/wireless/marvell/mwifiex/sdio.c +++ b/drivers/net/wireless/marvell/mwifiex/sdio.c @@ -109,6 +109,7 @@ mwifiex_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id) struct mwifiex_sdio_device *data = (void *)id->driver_data; card->firmware = data->firmware; + card->firmware_sdiouart = data->firmware_sdiouart; card->reg = data->reg; card->max_ports = data->max_ports; card->mp_agg_pkt_limit = data->mp_agg_pkt_limit; @@ -2032,6 +2033,7 @@ static int mwifiex_register_dev(struct mwifiex_adapter *adapter) int ret; struct sdio_mmc_card *card = adapter->card; struct sdio_func *func = card->func; + const char *firmware = card->firmware; /* save adapter pointer in card */ card->adapter = adapter; @@ -2048,7 +2050,18 @@ static int mwifiex_register_dev(struct mwifiex_adapter *adapter) return ret; } - strcpy(adapter->fw_name, card->firmware); + /* Select correct firmware (sdsd or sdiouart) firmware based on the strapping + * option + */ + if (card->firmware_sdiouart) { + u8 val; + + mwifiex_read_reg(adapter, card->reg->host_strap_reg, &val); + if ((val & card->reg->host_strap_mask) == card->reg->host_strap_value) + firmware = card->firmware_sdiouart; + } + strcpy(adapter->fw_name, firmware); + if (card->fw_dump_enh) { adapter->mem_type_mapping_tbl = generic_mem_type_map; adapter->num_mem_types = 1; diff --git a/drivers/net/wireless/marvell/mwifiex/sdio.h b/drivers/net/wireless/marvell/mwifiex/sdio.h index 2d9ec225aead..c461a915c386 100644 --- a/drivers/net/wireless/marvell/mwifiex/sdio.h +++ b/drivers/net/wireless/marvell/mwifiex/sdio.h @@ -198,6 +198,9 @@ struct mwifiex_sdio_card_reg { u8 host_int_rsr_reg; u8 host_int_status_reg; u8 host_int_mask_reg; + u8 host_strap_reg; + u8 host_strap_mask; + u8 host_strap_value; u8 status_reg_0; u8 status_reg_1; u8 sdio_int_mask; @@ -243,6 +246,7 @@ struct sdio_mmc_card { struct completion fw_done; const char *firmware; + const char *firmware_sdiouart; const struct mwifiex_sdio_card_reg *reg; u8 max_ports; u8 mp_agg_pkt_limit; @@ -276,6 +280,7 @@ struct sdio_mmc_card { struct mwifiex_sdio_device { const char *firmware; + const char *firmware_sdiouart; const struct mwifiex_sdio_card_reg *reg; u8 max_ports; u8 mp_agg_pkt_limit; @@ -437,6 +442,9 @@ static const struct mwifiex_sdio_card_reg mwifiex_reg_sd8997 = { .host_int_rsr_reg = 0x4, .host_int_status_reg = 0x0C, .host_int_mask_reg = 0x08, + .host_strap_reg = 0xF4, + .host_strap_mask = 0x01, + .host_strap_value = 0x00, .status_reg_0 = 0xE8, .status_reg_1 = 0xE9, .sdio_int_mask = 0xff, @@ -538,6 +546,9 @@ static const struct mwifiex_sdio_card_reg mwifiex_reg_sd8987 = { .host_int_rsr_reg = 0x4, .host_int_status_reg = 0x0C, .host_int_mask_reg = 0x08, + .host_strap_reg = 0xF4, + .host_strap_mask = 0x01, + .host_strap_value = 0x00, .status_reg_0 = 0xE8, .status_reg_1 = 0xE9, .sdio_int_mask = 0xff, -- cgit v1.2.3