[PATCH 4/4] usb: renesas_usbhs: expand USB-DMAC channels for R-Car Gen2

[Yoshihiro Shimoda]

This patch expands USB-DMAC channels for R-Car Gen2 SoCs. The SoCs
have 4 channels. If d{2,3}_{t,x}x_id are not set, this driver never
uses the expanded USB-DMAC channels.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda...@renesas.com>
---
 drivers/usb/renesas_usbhs/common.h |    4 ++++
 drivers/usb/renesas_usbhs/fifo.c   |    2 ++
 drivers/usb/renesas_usbhs/fifo.h   |    2 +-
 include/linux/usb/renesas_usbhs.h  |    4 ++++
 4 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/renesas_usbhs/common.h 
b/drivers/usb/renesas_usbhs/common.h
index c45667f..0427cdd 100644
--- a/drivers/usb/renesas_usbhs/common.h
+++ b/drivers/usb/renesas_usbhs/common.h
@@ -102,6 +102,10 @@ struct usbhs_priv;
 #define DEVADD8                0x00E0
 #define DEVADD9                0x00E2
 #define DEVADDA                0x00E4
+#define D2FIFOSEL      0x00F0  /* for R-Car Gen2 */
+#define D2FIFOCTR      0x00F2  /* for R-Car Gen2 */
+#define D3FIFOSEL      0x00F4  /* for R-Car Gen2 */
+#define D3FIFOCTR      0x00F6  /* for R-Car Gen2 */
 
 /* SYSCFG */
 #define SCKE   (1 << 10)       /* USB Module Clock Enable */
diff --git a/drivers/usb/renesas_usbhs/fifo.c b/drivers/usb/renesas_usbhs/fifo.c
index bc9a050..f46271c 100644
--- a/drivers/usb/renesas_usbhs/fifo.c
+++ b/drivers/usb/renesas_usbhs/fifo.c
@@ -1234,6 +1234,8 @@ int usbhs_fifo_probe(struct usbhs_priv *priv)
        /* DFIFO */
        USBHS_DFIFO_INIT(priv, fifo, 0);
        USBHS_DFIFO_INIT(priv, fifo, 1);
+       USBHS_DFIFO_INIT_NO_PORT(priv, fifo, 2);
+       USBHS_DFIFO_INIT_NO_PORT(priv, fifo, 3);
 
        return 0;
 }
diff --git a/drivers/usb/renesas_usbhs/fifo.h b/drivers/usb/renesas_usbhs/fifo.h
index 899729a..f07037c1 100644
--- a/drivers/usb/renesas_usbhs/fifo.h
+++ b/drivers/usb/renesas_usbhs/fifo.h
@@ -38,7 +38,7 @@ struct usbhs_fifo {
        struct sh_dmae_slave    rx_slave;
 };
 
-#define USBHS_MAX_NUM_DFIFO    2
+#define USBHS_MAX_NUM_DFIFO    4
 struct usbhs_fifo_info {
        struct usbhs_fifo cfifo;
        struct usbhs_fifo dfifo[USBHS_MAX_NUM_DFIFO];
diff --git a/include/linux/usb/renesas_usbhs.h 
b/include/linux/usb/renesas_usbhs.h
index d5952bb..9fd9e48 100644
--- a/include/linux/usb/renesas_usbhs.h
+++ b/include/linux/usb/renesas_usbhs.h
@@ -145,6 +145,10 @@ struct renesas_usbhs_driver_param {
        int d0_rx_id;
        int d1_tx_id;
        int d1_rx_id;
+       int d2_tx_id;
+       int d2_rx_id;
+       int d3_tx_id;
+       int d3_rx_id;
 
        /*
         * option:
-- 
1.7.9.5

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