[ARM] pata_pxa: DMA-capable PATA driver

This patch adds a driver for a harddrive attached to PXA address and data bus.
Unlike pata_platform, this driver allows usage of PXA DMA controller, making the
transmission speed 3x higher.

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Acked-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

1 files changed, 33 insertions, 0 deletions

diff --git a/arch/arm/mach-pxa/include/mach/pata_pxa.h b/arch/arm/mach-pxa/include/mach/pata_pxa.h
new file mode 100644
index 000000000000..6cf7df1d5830
--- /dev/null
+++ b/arch/arm/mach-pxa/include/mach/pata_pxa.h
@@ -0,0 +1,33 @@
+/*
+ * Generic PXA PATA driver
+ *
+ * Copyright (C) 2010 Marek Vasut <marek.vasut@gmail.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2, or (at your option)
+ *  any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; see the file COPYING.  If not, write to
+ *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef __MACH_PATA_PXA_H__
+#define __MACH_PATA_PXA_H__
+
+struct pata_pxa_pdata {
+        /* PXA DMA DREQ<0:2> pin */
+        uint32_t        dma_dreq;
+        /* Register shift */
+        uint32_t        reg_shift;
+        /* IRQ flags */
+        uint32_t        irq_flags;
+};
+
+#endif  /* __MACH_PATA_PXA_H__ */