Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / linux / spi / pxa2xx_spi.h

diff --git a/kernel/include/linux/spi/pxa2xx_spi.h b/kernel/include/linux/spi/pxa2xx_spi.h
new file mode 100644 (file)
index 0000000..6d36dac
--- /dev/null
+++ b/kernel/include/linux/spi/pxa2xx_spi.h
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2005 Stephen Street / StreetFire Sound Labs
+ *
+ * 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.
+ */
+#ifndef __linux_pxa2xx_spi_h
+#define __linux_pxa2xx_spi_h
+
+#include <linux/pxa2xx_ssp.h>
+
+#define PXA2XX_CS_ASSERT (0x01)
+#define PXA2XX_CS_DEASSERT (0x02)
+
+struct dma_chan;
+
+/* device.platform_data for SSP controller devices */
+struct pxa2xx_spi_master {
+       u32 clock_enable;
+       u16 num_chipselect;
+       u8 enable_dma;
+
+       /* DMA engine specific config */
+       bool (*dma_filter)(struct dma_chan *chan, void *param);
+       void *tx_param;
+       void *rx_param;
+
+       /* For non-PXA arches */
+       struct ssp_device ssp;
+};
+
+/* spi_board_info.controller_data for SPI slave devices,
+ * copied to spi_device.platform_data ... mostly for dma tuning
+ */
+struct pxa2xx_spi_chip {
+       u8 tx_threshold;
+       u8 tx_hi_threshold;
+       u8 rx_threshold;
+       u8 dma_burst_size;
+       u32 timeout;
+       u8 enable_loopback;
+       int gpio_cs;
+       void (*cs_control)(u32 command);
+};
+
+#if defined(CONFIG_ARCH_PXA) || defined(CONFIG_ARCH_MMP)
+
+#include <linux/clk.h>
+
+extern void pxa2xx_set_spi_info(unsigned id, struct pxa2xx_spi_master *info);
+
+#endif
+#endif