spi: Add snapshot of SPI QSD driver

This change adds a snapshot of SPI QSD driver from the 3.18 branch.
kernel-3.18 baseline: e70ad0cd5efdd9dc91a77dcdac31d6132e1315c1

Change-Id: I6e2a4be429a2681603a12e5ecb6853582cd3ffbe
Signed-off-by: Girish Mahadevan <girishm@codeaurora.org>

1 files changed, 56 insertions, 0 deletions

diff --git a/include/linux/spi/qcom-spi.h b/include/linux/spi/qcom-spi.h
new file mode 100644
index 000000000000..598481079383
--- /dev/null
+++ b/include/linux/spi/qcom-spi.h
@@ -0,0 +1,56 @@
+/* Copyright (c) 2014-2015 The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * 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.
+ *
+ */
+/*
+ * SPI driver for Qualcomm MSM platforms.
+ */
+
+/**
+ * msm_spi_platform_data: msm spi-controller's configuration data
+ *
+ * @max_clock_speed max spi clock speed
+ * @active_only when set, votes when system active and removes the vote when
+ *       system goes idle (optimises for performance). When unset, voting using
+ *       runtime pm (optimizes for power).
+ * @master_id master id number of the controller's wrapper (BLSP or GSBI).
+ *       When zero, clock path voting is disabled.
+ * @gpio_config pointer to function for configuring gpio
+ * @gpio_release pointer to function for releasing gpio pins
+ * @dma_config function poniter for configuring dma engine
+ * @pm_lat power management latency
+ * @infinite_mode use FIFO mode in infinite mode
+ * @ver_reg_exists if the version register exists
+ * @use_beam true if BAM is available
+ * @bam_consumer_pipe_index BAM conusmer pipe
+ * @bam_producer_pipe_index BAM producer pipe
+ * @rt_priority true if RT thread
+ * @use_pinctrl true if pinctrl library is used
+ * @is_shared true when qup is shared between ee's
+ */
+struct msm_spi_platform_data {
+	u32 max_clock_speed;
+	u32  master_id;
+	u32 bus_width;
+	int (*gpio_config)(void);
+	void (*gpio_release)(void);
+	int (*dma_config)(void);
+	const char *rsl_id;
+	u32  pm_lat;
+	u32  infinite_mode;
+	bool ver_reg_exists;
+	bool use_bam;
+	u32  bam_consumer_pipe_index;
+	u32  bam_producer_pipe_index;
+	bool rt_priority;
+	bool use_pinctrl;
+	bool is_shared;
+};