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Date: Fri, 3 Oct 2008 14:52:27 +0300
From: Carlos Chinea <carlos.chinea@...ia.com>
To: linux-kernel@...r.kernel.org
Cc: linux-omap@...r.kernel.org
Subject: [RFC][PATCH 2/5] OMAP SSI driver interface
Signed-off-by: Carlos Chinea <carlos.chinea@...ia.com>
---
include/linux/ssi_driver_if.h | 137 +++++++++++++++++++++++++++++++++++++++++
1 files changed, 137 insertions(+), 0 deletions(-)
create mode 100644 include/linux/ssi_driver_if.h
diff --git a/include/linux/ssi_driver_if.h b/include/linux/ssi_driver_if.h
new file mode 100644
index 0000000..3379dd0
--- /dev/null
+++ b/include/linux/ssi_driver_if.h
@@ -0,0 +1,137 @@
+/*
+ * ssi_driver_if.h
+ *
+ * Header for the SSI driver low level interface.
+ *
+ * Copyright (C) 2007-2008 Nokia Corporation. All rights reserved.
+ *
+ * Contact: Carlos Chinea <carlos.chinea@...ia.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * 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.
+ *
+ * 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 St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+#ifndef __SSI_DRIVER_IF_H__
+#define __SSI_DRIVER_IF_H__
+
+#include <linux/device.h>
+
+#define SSI_IOMEM_NAME "SSI_IO_MEM"
+#define SSI_P1_MPU_IRQ0_NAME "SSI_P1_MPU_IRQ0"
+#define SSI_P2_MPU_IRQ0_NAME "SSI_P2_MPU_IRQ0"
+#define SSI_P1_MPU_IRQ1_NAME "SSI_P1_MPU_IRQ1"
+#define SSI_P2_MPU_IRQ1_NAME "SSI_P2_MPU_IRQ1"
+#define SSI_GDD_MPU_IRQ_NAME "GDD_MPU_IRQ"
+
+/* IRQ values */
+#define SSI_P1_MPU_IRQ0 67
+#define SSI_P2_MPU_IRQ0 68
+#define SSI_P1_MPU_IRQ1 69
+#define SSI_P2_MPU_IRQ1 70
+#define SSI_GDD_MPU_IRQ 71
+
+/* The number of ports handled by the driver. (MAX:2) */
+#define SSI_MAX_PORTS 1
+
+/*
+ * Masks used to enable or disable the reception of certain hardware events
+ * for the ssi_device_drivers
+ */
+#define SSI_EVENT_CLEAR 0x00
+#define SSI_EVENT_MASK 0xFF
+#define SSI_EVENT_BREAK_DETECTED_MASK 0x01
+#define SSI_EVENT_ERROR_MASK 0x02
+
+#define ANY_SSI_CONTROLLER -1
+#define ANY_CHANNEL -1
+#define CHANNEL(channel) (1<<channel)
+
+enum {
+ SSI_EVENT_BREAK_DETECTED = 0,
+ SSI_EVENT_ERROR,
+};
+
+enum {
+ SSI_IOCTL_WAKE_UP,
+ SSI_IOCTL_WAKE_DOWN,
+ SSI_IOCTL_SEND_BREAK,
+ SSI_IOCTL_WAKE,
+};
+
+/* Forward references */
+struct ssi_device;
+struct ssi_dev;
+struct ssi_port;
+struct ssi_channel;
+
+struct ssi_port_pd {
+ u32 tx_mode;
+ u32 tx_frame_size;
+ u32 divisor;
+ u32 tx_ch;
+ u32 arb_mode;
+ u32 rx_mode;
+ u32 rx_frame_size;
+ u32 rx_ch;
+ u32 timeout;
+ u8 n_irq;
+};
+
+struct ssi_platform_data {
+ unsigned char *clk_name;
+ struct ssi_dev *ssi_ctrl;
+ struct ssi_port_pd *ports;
+ u8 num_ports;
+};
+
+struct ssi_device {
+ int n_ctrl;
+ unsigned int n_p;
+ unsigned int n_ch;
+ char modalias[BUS_ID_SIZE];
+ struct ssi_channel *ch;
+ struct device device;
+};
+
+#define to_ssi_device(dev) container_of(dev, struct ssi_device, device)
+
+struct ssi_device_driver {
+ unsigned long ctrl_mask;
+ unsigned long ch_mask[SSI_MAX_PORTS];
+ unsigned long event_mask;
+ void (*port_event) (int c_id, unsigned int port,
+ unsigned int event, void *arg);
+ int (*probe)(struct ssi_device *dev);
+ int (*remove)(struct ssi_device *dev);
+ int (*suspend)(struct ssi_device *dev,
+ pm_message_t mesg);
+ int (*resume)(struct ssi_device *dev);
+ struct device_driver driver;
+};
+
+#define to_ssi_device_driver(drv) container_of(drv, \
+ struct ssi_device_driver, \
+ driver)
+
+int register_ssi_driver(struct ssi_device_driver *driver);
+void unregister_ssi_driver(struct ssi_device_driver *driver);
+int ssi_open(struct ssi_device *dev);
+int ssi_write(struct ssi_device *dev, u32 *data, unsigned int count);
+void ssi_write_cancel(struct ssi_device *dev);
+int ssi_read(struct ssi_device *dev, u32 *data, unsigned int w_count);
+void ssi_read_cancel(struct ssi_device *dev);
+int ssi_ioctl(struct ssi_device *dev, unsigned int command, void *arg);
+void ssi_close(struct ssi_device *dev);
+void ssi_dev_set_cb(struct ssi_device *dev, void (*r_cb)(struct ssi_device *dev)
+ , void (*w_cb)(struct ssi_device *dev));
+#endif
--
1.5.3.6
--
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