Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

[linux-2.6-omap-h63xx.git] / drivers / char / xilinx_hwicap / xilinx_hwicap.h

diff --git a/drivers/char/xilinx_hwicap/xilinx_hwicap.h b/drivers/char/xilinx_hwicap/xilinx_hwicap.h
index ae771cac16298b1c675e3f9de902880898e75a78..1f9c8b082dbe1643920a59f4cba44973957607de 100644 (file)
--- a/drivers/char/xilinx_hwicap/xilinx_hwicap.h
+++ b/drivers/char/xilinx_hwicap/xilinx_hwicap.h
@@ -48,9 +48,9 @@ struct hwicap_drvdata {
        u8 write_buffer[4];
        u32 read_buffer_in_use;   /* Always in [0,3] */
        u8 read_buffer[4];
-       u32 mem_start;            /* phys. address of the control registers */
-       u32 mem_end;              /* phys. address of the control registers */
-       u32 mem_size;
+       resource_size_t mem_start;/* phys. address of the control registers */
+       resource_size_t mem_end;  /* phys. address of the control registers */
+       resource_size_t mem_size;
        void __iomem *base_address;/* virt. address of the control registers */
 
        struct device *dev;
@@ -61,14 +61,31 @@ struct hwicap_drvdata {
        const struct config_registers *config_regs;
        void *private_data;
        bool is_open;
-       struct semaphore sem;
+       struct mutex sem;
 };
 
 struct hwicap_driver_config {
+       /* Read configuration data given by size into the data buffer.
+          Return 0 if successful. */
        int (*get_configuration)(struct hwicap_drvdata *drvdata, u32 *data,
                        u32 size);
+       /* Write configuration data given by size from the data buffer.
+          Return 0 if successful. */
        int (*set_configuration)(struct hwicap_drvdata *drvdata, u32 *data,
                        u32 size);
+       /* Get the status register, bit pattern given by:
+        * D8 - 0 = configuration error
+        * D7 - 1 = alignment found
+        * D6 - 1 = readback in progress
+        * D5 - 0 = abort in progress
+        * D4 - Always 1
+        * D3 - Always 1
+        * D2 - Always 1
+        * D1 - Always 1
+        * D0 - 1 = operation completed
+        */
+       u32 (*get_status)(struct hwicap_drvdata *drvdata);
+       /* Reset the hw */
        void (*reset)(struct hwicap_drvdata *drvdata);
 };
 
@@ -163,30 +180,37 @@ struct config_registers {
 /* Constant to use for CRC check when CRC has been disabled */
 #define XHI_DISABLED_AUTO_CRC       0x0000DEFCUL
 
+/* Meanings of the bits returned by get_status */
+#define XHI_SR_CFGERR_N_MASK 0x00000100 /* Config Error Mask */
+#define XHI_SR_DALIGN_MASK 0x00000080 /* Data Alignment Mask */
+#define XHI_SR_RIP_MASK 0x00000040 /* Read back Mask */
+#define XHI_SR_IN_ABORT_N_MASK 0x00000020 /* Select Map Abort Mask */
+#define XHI_SR_DONE_MASK 0x00000001 /* Done bit Mask  */
+
 /**
- * hwicap_type_1_read: Generates a Type 1 read packet header.
- * @parameter: Register is the address of the register to be read back.
+ * hwicap_type_1_read - Generates a Type 1 read packet header.
+ * @reg: is the address of the register to be read back.
  *
  * Generates a Type 1 read packet header, which is used to indirectly
  * read registers in the configuration logic.  This packet must then
  * be sent through the icap device, and a return packet received with
  * the information.
  **/
-static inline u32 hwicap_type_1_read(u32 Register)
+static inline u32 hwicap_type_1_read(u32 reg)
 {
        return (XHI_TYPE_1 << XHI_TYPE_SHIFT) |
-               (Register << XHI_REGISTER_SHIFT) |
+               (reg << XHI_REGISTER_SHIFT) |
                (XHI_OP_READ << XHI_OP_SHIFT);
 }
 
 /**
- * hwicap_type_1_write: Generates a Type 1 write packet header
- * @parameter: Register is the address of the register to be read back.
+ * hwicap_type_1_write - Generates a Type 1 write packet header
+ * @reg: is the address of the register to be read back.
  **/
-static inline u32 hwicap_type_1_write(u32 Register)
+static inline u32 hwicap_type_1_write(u32 reg)
 {
        return (XHI_TYPE_1 << XHI_TYPE_SHIFT) |
-               (Register << XHI_REGISTER_SHIFT) |
+               (reg << XHI_REGISTER_SHIFT) |
                (XHI_OP_WRITE << XHI_OP_SHIFT);
 }