diff options
Diffstat (limited to 'drivers/acpi/acpi_lpss.c')
| -rw-r--r-- | drivers/acpi/acpi_lpss.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c index fb78bb9ad8f6..d3961014aad7 100644 --- a/drivers/acpi/acpi_lpss.c +++ b/drivers/acpi/acpi_lpss.c @@ -30,6 +30,7 @@ ACPI_MODULE_NAME("acpi_lpss"); /* Offsets relative to LPSS_PRIVATE_OFFSET */ #define LPSS_GENERAL 0x08 #define LPSS_GENERAL_LTR_MODE_SW BIT(2) +#define LPSS_GENERAL_UART_RTS_OVRD BIT(3) #define LPSS_SW_LTR 0x10 #define LPSS_AUTO_LTR 0x14 #define LPSS_TX_INT 0x20 @@ -68,11 +69,16 @@ struct lpss_private_data { static void lpss_uart_setup(struct lpss_private_data *pdata) { - unsigned int tx_int_offset = pdata->dev_desc->prv_offset + LPSS_TX_INT; + unsigned int offset; u32 reg; - reg = readl(pdata->mmio_base + tx_int_offset); - writel(reg | LPSS_TX_INT_MASK, pdata->mmio_base + tx_int_offset); + offset = pdata->dev_desc->prv_offset + LPSS_TX_INT; + reg = readl(pdata->mmio_base + offset); + writel(reg | LPSS_TX_INT_MASK, pdata->mmio_base + offset); + + offset = pdata->dev_desc->prv_offset + LPSS_GENERAL; + reg = readl(pdata->mmio_base + offset); + writel(reg | LPSS_GENERAL_UART_RTS_OVRD, pdata->mmio_base + offset); } static struct lpss_device_desc lpt_dev_desc = { |