Merge commit 'v2.6.27-rc7' into x86/pebs

1 files changed, 72 insertions, 0 deletions

diff --git a/arch/arm/mach-imx/include/mach/spi_imx.h b/arch/arm/mach-imx/include/mach/spi_imx.h
new file mode 100644
index 00000000000..4186430feec
--- /dev/null
+++ b/arch/arm/mach-imx/include/mach/spi_imx.h
@@ -0,0 +1,72 @@
+/*
+ * arch/arm/mach-imx/include/mach/spi_imx.h
+ *
+ * Copyright (C) 2006 SWAPP
+ *	Andrea Paterniani <a.paterniani@swapp-eng.it>
+ *
+ * Initial version inspired by:
+ *	linux-2.6.17-rc3-mm1/arch/arm/mach-pxa/include/mach/pxa2xx_spi.h
+ *
+ * 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 of the License, 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; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef SPI_IMX_H_
+#define SPI_IMX_H_
+
+
+/*-------------------------------------------------------------------------*/
+/**
+ * struct spi_imx_master - device.platform_data for SPI controller devices.
+ * @num_chipselect: chipselects are used to distinguish individual
+ *	SPI slaves, and are numbered from zero to num_chipselects - 1.
+ *	each slave has a chipselect signal, but it's common that not
+ *	every chipselect is connected to a slave.
+ * @enable_dma: if true enables DMA driven transfers.
+*/
+struct spi_imx_master {
+	u8 num_chipselect;
+	u8 enable_dma:1;
+};
+/*-------------------------------------------------------------------------*/
+
+
+/*-------------------------------------------------------------------------*/
+/**
+ * struct spi_imx_chip - spi_board_info.controller_data for SPI
+ * slave devices, copied to spi_device.controller_data.
+ * @enable_loopback : used for test purpouse to internally connect RX and TX
+ *	sections.
+ * @enable_dma : enables dma transfer (provided that controller driver has
+ *	dma enabled too).
+ * @ins_ss_pulse : enable /SS pulse insertion between SPI burst.
+ * @bclk_wait : number of bclk waits between each bits_per_word SPI burst.
+ * @cs_control : function pointer to board-specific function to assert/deassert
+ *	I/O port to control HW generation of devices chip-select.
+*/
+struct spi_imx_chip {
+	u8	enable_loopback:1;
+	u8	enable_dma:1;
+	u8	ins_ss_pulse:1;
+	u16	bclk_wait:15;
+	void (*cs_control)(u32 control);
+};
+
+/* Chip-select state */
+#define SPI_CS_ASSERT			(1 << 0)
+#define SPI_CS_DEASSERT			(1 << 1)
+/*-------------------------------------------------------------------------*/
+
+
+#endif /* SPI_IMX_H_*/