diff options
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-hisi-sfc-v3xx.c | 56 |
1 files changed, 55 insertions, 1 deletions
diff --git a/drivers/spi/spi-hisi-sfc-v3xx.c b/drivers/spi/spi-hisi-sfc-v3xx.c index 45d906110ed1..e3b57252d075 100644 --- a/drivers/spi/spi-hisi-sfc-v3xx.c +++ b/drivers/spi/spi-hisi-sfc-v3xx.c @@ -7,6 +7,7 @@ #include <linux/acpi.h> #include <linux/bitops.h> +#include <linux/dmi.h> #include <linux/iopoll.h> #include <linux/module.h> #include <linux/platform_device.h> @@ -250,6 +251,44 @@ static const struct spi_controller_mem_ops hisi_sfc_v3xx_mem_ops = { .exec_op = hisi_sfc_v3xx_exec_op, }; +static int hisi_sfc_v3xx_buswidth_override_bits; + +/* + * ACPI FW does not allow us to currently set the device buswidth, so quirk it + * depending on the board. + */ +static int __init hisi_sfc_v3xx_dmi_quirk(const struct dmi_system_id *d) +{ + hisi_sfc_v3xx_buswidth_override_bits = SPI_RX_QUAD | SPI_TX_QUAD; + + return 0; +} + +static const struct dmi_system_id hisi_sfc_v3xx_dmi_quirk_table[] = { + { + .callback = hisi_sfc_v3xx_dmi_quirk, + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Huawei"), + DMI_MATCH(DMI_PRODUCT_NAME, "D06"), + }, + }, + { + .callback = hisi_sfc_v3xx_dmi_quirk, + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Huawei"), + DMI_MATCH(DMI_PRODUCT_NAME, "TaiShan 2280 V2"), + }, + }, + { + .callback = hisi_sfc_v3xx_dmi_quirk, + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Huawei"), + DMI_MATCH(DMI_PRODUCT_NAME, "TaiShan 200 (Model 2280)"), + }, + }, + {} +}; + static int hisi_sfc_v3xx_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -265,6 +304,8 @@ static int hisi_sfc_v3xx_probe(struct platform_device *pdev) ctlr->mode_bits = SPI_RX_DUAL | SPI_RX_QUAD | SPI_TX_DUAL | SPI_TX_QUAD; + ctlr->buswidth_override_bits = hisi_sfc_v3xx_buswidth_override_bits; + host = spi_controller_get_devdata(ctlr); host->dev = dev; @@ -320,7 +361,20 @@ static struct platform_driver hisi_sfc_v3xx_spi_driver = { .probe = hisi_sfc_v3xx_probe, }; -module_platform_driver(hisi_sfc_v3xx_spi_driver); +static int __init hisi_sfc_v3xx_spi_init(void) +{ + dmi_check_system(hisi_sfc_v3xx_dmi_quirk_table); + + return platform_driver_register(&hisi_sfc_v3xx_spi_driver); +} + +static void __exit hisi_sfc_v3xx_spi_exit(void) +{ + platform_driver_unregister(&hisi_sfc_v3xx_spi_driver); +} + +module_init(hisi_sfc_v3xx_spi_init); +module_exit(hisi_sfc_v3xx_spi_exit); MODULE_LICENSE("GPL"); MODULE_AUTHOR("John Garry <john.garry@huawei.com>"); |