3 files changed, 46 insertions, 2 deletions

diff --git a/include/linux/spi/ads7846.h b/include/linux/spi/ads7846.h
index c64de9dd7631..2f694f3846a9 100644
--- a/include/linux/spi/ads7846.h
+++ b/include/linux/spi/ads7846.h
@@ -46,8 +46,9 @@ struct ads7846_platform_data {
         u16     debounce_rep;           /* additional consecutive good readings
                                          * required after the first two */
         int     gpio_pendown;           /* the GPIO used to decide the pendown
-                                         * state if get_pendown_state == NULL
-                                         */
+                                         * state if get_pendown_state == NULL */
+        int     gpio_pendown_debounce;  /* platform specific debounce time for
+                                         * the gpio_pendown */
         int     (*get_pendown_state)(void);
         int     (*filter_init)  (const struct ads7846_platform_data *pdata,
                                  void **filter_data);
diff --git a/include/linux/spi/spi-tegra.h b/include/linux/spi/spi-tegra.h
new file mode 100644
index 000000000000..786932c62edb
--- /dev/null
+++ b/include/linux/spi/spi-tegra.h
@@ -0,0 +1,40 @@
+/*
+ * spi-tegra.h: SPI interface for Nvidia Tegra20 SLINK controller.
+ *
+ * Copyright (C) 2011 NVIDIA Corporation
+ *
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#ifndef _LINUX_SPI_TEGRA_H
+#define _LINUX_SPI_TEGRA_H
+
+struct tegra_spi_platform_data {
+        int dma_req_sel;
+        unsigned int spi_max_frequency;
+};
+
+/*
+ * Controller data from device to pass some info like
+ * hw based chip select can be used or not and if yes
+ * then CS hold and setup time.
+ */
+struct tegra_spi_device_controller_data {
+        bool is_hw_based_cs;
+        int cs_setup_clk_count;
+        int cs_hold_clk_count;
+};
+
+#endif /* _LINUX_SPI_TEGRA_H */
diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
index fa702aeb5038..f62918946d86 100644
--- a/include/linux/spi/spi.h
+++ b/include/linux/spi/spi.h
@@ -90,6 +90,7 @@ struct spi_device {
         void                    *controller_state;
         void                    *controller_data;
         char                    modalias[SPI_NAME_SIZE];
+        int                     cs_gpio;        /* chip select gpio */
 
         /*
          * likely need more hooks for more protocol options affecting how
@@ -362,6 +363,8 @@ struct spi_master {
         int (*transfer_one_message)(struct spi_master *master,
                                     struct spi_message *mesg);
         int (*unprepare_transfer_hardware)(struct spi_master *master);
+        /* gpio chip select */
+        int                     *cs_gpios;
 };
 
 static inline void *spi_master_get_devdata(struct spi_master *master)