Hello.
tom.leiming@xxxxxxxxx wrote:
From: Ming Lei <tom.leiming@xxxxxxxxx>
Each musb hw controller may use different DMA controller, so we
introduce dma controller related flags and callbacks in glue ops.
HW glue driver can provide its dma controller information to
musb core with this flags and callbacks, so we can make musb core
more generic and avoid to depend on the ugly macro below as far as
possible:
CONFIG_USB_INVENTRA_DMA
CONFIG_USB_TUSB_OMAP_DMA
CONFIG_USB_TI_CPPI_DMA
Signed-off-by: Ming Lei <tom.leiming@xxxxxxxxx>
---
drivers/usb/musb/musb_core.h | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h
index 9058245..781e1ad 100644
--- a/drivers/usb/musb/musb_core.h
+++ b/drivers/usb/musb/musb_core.h
@@ -239,6 +239,10 @@ enum musb_g_ep0_state {
#define MUSB_GLUE_TUSB_STYLE 0x0001
#define MUSB_GLUE_EP_ADDR_FLAT_MAPPING 0x0002
#define MUSB_GLUE_EP_ADDR_INDEXED_MAPPING 0x0004
+#define MUSB_GLUE_DMA_INVENTRA 0x0008
+#define MUSB_GLUE_DMA_CPPI 0x0010
+#define MUSB_GLUE_DMA_TUSB 0x0020
Please keep the macro values aligned.
+
This empty line is not needed.
/**
* struct musb_platform_ops - Operations passed to musb_core by HW glue layer
@@ -253,6 +257,8 @@ enum musb_g_ep0_state {
* @set_vbus: forces vbus status
* @read_fifo: read data from musb fifo in PIO
* @write_fifo: write data into musb fifo in PIO
+ * @dma_controller_create: create dma controller for me
+ * @dma_controller_destroy: destroy dma controller
*/
struct musb_platform_ops {
short fifo_mode;
@@ -272,6 +278,9 @@ struct musb_platform_ops {
void (*set_vbus)(struct musb *musb, int on);
void (*read_fifo)(struct musb_hw_ep *hw_ep, u16 len, u8 *buf);
void (*write_fifo)(struct musb_hw_ep *hw_ep, u16 len, const u8 *buf);
+ struct dma_controller* (*dma_controller_create)(struct musb *,
+ void __iomem *);
+ void (*dma_controller_destroy)(struct dma_controller *);
I suggest shorter names like dmac_create()/dmac_destroy() or even
dma_create()/dma_destroy()...
WBR, Sergei
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