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path: root/drivers/acpi/acpi_lpss.c
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Diffstat (limited to 'drivers/acpi/acpi_lpss.c')
-rw-r--r--drivers/acpi/acpi_lpss.c21
1 files changed, 18 insertions, 3 deletions
diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c
index fb78bb9ad8f6..6745fe137b9e 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 = {
@@ -157,6 +163,15 @@ static const struct acpi_device_id acpi_lpss_device_ids[] = {
{ "80860F41", (unsigned long)&byt_i2c_dev_desc },
{ "INT33B2", },
+ { "INT3430", (unsigned long)&lpt_dev_desc },
+ { "INT3431", (unsigned long)&lpt_dev_desc },
+ { "INT3432", (unsigned long)&lpt_dev_desc },
+ { "INT3433", (unsigned long)&lpt_dev_desc },
+ { "INT3434", (unsigned long)&lpt_uart_dev_desc },
+ { "INT3435", (unsigned long)&lpt_uart_dev_desc },
+ { "INT3436", (unsigned long)&lpt_sdio_dev_desc },
+ { "INT3437", },
+
{ }
};