spi-topcliff-pch: Support new device LAPIS Semiconductor ML7831 IOH

[linux-flexiantxendom0.git] / drivers / spi / spi-topcliff-pch.c

diff --git a/drivers/spi/spi-topcliff-pch.c b/drivers/spi/spi-topcliff-pch.c
index 027b6d0..54b9d2e 100644 (file)
--- a/drivers/spi/spi-topcliff-pch.c
+++ b/drivers/spi/spi-topcliff-pch.c
@@ -95,16 +95,18 @@
 #define PCH_CLOCK_HZ           50000000
 #define PCH_MAX_SPBR           1023
 
-/* Definition for ML7213 by OKI SEMICONDUCTOR */
+/* Definition for ML7213/ML7831 by OKI SEMICONDUCTOR */
 #define PCI_VENDOR_ID_ROHM             0x10DB
 #define PCI_DEVICE_ID_ML7213_SPI       0x802c
 #define PCI_DEVICE_ID_ML7223_SPI       0x800F
+#define PCI_DEVICE_ID_ML7831_SPI       0x8816
 
 /*
  * Set the number of SPI instance max
  * Intel EG20T PCH :           1ch
  * OKI SEMICONDUCTOR ML7213 IOH :      2ch
  * OKI SEMICONDUCTOR ML7223 IOH :      1ch
+ * OKI SEMICONDUCTOR ML7831 IOH :      1ch
 */
 #define PCH_SPI_MAX_DEV                        2
 
@@ -218,6 +220,7 @@ static struct pci_device_id pch_spi_pcidev_id[] = {
        { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_GE_SPI),    1, },
        { PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ML7213_SPI), 2, },
        { PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ML7223_SPI), 1, },
+       { PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ML7831_SPI), 1, },
        { }
 };
 
@@ -315,22 +318,23 @@ static void pch_spi_handler_sub(struct pch_spi_data *data, u32 reg_spsr_val,
                data->tx_index = tx_index;
                data->rx_index = rx_index;
 
-       }
-
-       /* if transfer complete interrupt */
-       if (reg_spsr_val & SPSR_FI_BIT) {
-               if ((tx_index == bpw_len) && (rx_index == tx_index)) {
-                       /* disable interrupts */
-                       pch_spi_setclr_reg(data->master, PCH_SPCR, 0, PCH_ALL);
-
-                       /* transfer is completed;
-                          inform pch_spi_process_messages */
-                       data->transfer_complete = true;
-                       data->transfer_active = false;
-                       wake_up(&data->wait);
-               } else {
-                       dev_err(&data->master->dev,
-                               "%s : Transfer is not completed", __func__);
+               /* if transfer complete interrupt */
+               if (reg_spsr_val & SPSR_FI_BIT) {
+                       if ((tx_index == bpw_len) && (rx_index == tx_index)) {
+                               /* disable interrupts */
+                               pch_spi_setclr_reg(data->master, PCH_SPCR, 0,
+                                                  PCH_ALL);
+
+                               /* transfer is completed;
+                                  inform pch_spi_process_messages */
+                               data->transfer_complete = true;
+                               data->transfer_active = false;
+                               wake_up(&data->wait);
+                       } else {
+                               dev_err(&data->master->dev,
+                                       "%s : Transfer is not completed",
+                                       __func__);
+                       }
                }
        }
 }