staging: rts5208: add support for rts5208 and rts5288
There are still many rts5208/5288 card readers being used, but no
drivers are supported them in kernel now. This driver can make a
great convenience for people who use them.
Many other rts-series card reader are supported by mfd driver, but due
to much difference with others, rts5208/5288 can not add into mfd driver
pretty now, so we provide a separated driver here to support the device.
Signed-off-by: Micky Ching <micky_ching@realsil.com.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/rts5208/rtsx.h b/drivers/staging/rts5208/rtsx.h
new file mode 100644
index 0000000..3f048e06
--- /dev/null
+++ b/drivers/staging/rts5208/rtsx.h
@@ -0,0 +1,186 @@
+/* Driver for Realtek PCI-Express card reader
+ * Header file
+ *
+ * Copyright(c) 2009-2013 Realtek Semiconductor Corp. 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 as published by the
+ * Free Software Foundation; either version 2, 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, see <http://www.gnu.org/licenses/>.
+ *
+ * Author:
+ * Wei WANG (wei_wang@realsil.com.cn)
+ * Micky Ching (micky_ching@realsil.com.cn)
+ */
+
+#ifndef __REALTEK_RTSX_H
+#define __REALTEK_RTSX_H
+
+#include <linux/io.h>
+#include <linux/bitops.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/pci.h>
+#include <linux/mutex.h>
+#include <linux/cdrom.h>
+#include <linux/workqueue.h>
+#include <linux/timer.h>
+#include <linux/time.h>
+
+#include <scsi/scsi.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_devinfo.h>
+#include <scsi/scsi_eh.h>
+#include <scsi/scsi_host.h>
+
+#include "debug.h"
+#include "trace.h"
+#include "general.h"
+
+#define CR_DRIVER_NAME "rts5208"
+
+#define pci_get_bus_and_slot(bus, devfn) \
+ pci_get_domain_bus_and_slot(0, (bus), (devfn))
+
+/*
+ * macros for easy use
+ */
+#define rtsx_writel(chip, reg, value) \
+ iowrite32(value, (chip)->rtsx->remap_addr + reg)
+#define rtsx_readl(chip, reg) \
+ ioread32((chip)->rtsx->remap_addr + reg)
+#define rtsx_writew(chip, reg, value) \
+ iowrite16(value, (chip)->rtsx->remap_addr + reg)
+#define rtsx_readw(chip, reg) \
+ ioread16((chip)->rtsx->remap_addr + reg)
+#define rtsx_writeb(chip, reg, value) \
+ iowrite8(value, (chip)->rtsx->remap_addr + reg)
+#define rtsx_readb(chip, reg) \
+ ioread8((chip)->rtsx->remap_addr + reg)
+
+#define rtsx_read_config_byte(chip, where, val) \
+ pci_read_config_byte((chip)->rtsx->pci, where, val)
+
+#define rtsx_write_config_byte(chip, where, val) \
+ pci_write_config_byte((chip)->rtsx->pci, where, val)
+
+#define wait_timeout_x(task_state, msecs) \
+do { \
+ set_current_state((task_state)); \
+ schedule_timeout((msecs) * HZ / 1000); \
+} while (0)
+#define wait_timeout(msecs) wait_timeout_x(TASK_INTERRUPTIBLE, (msecs))
+
+
+#define STATE_TRANS_NONE 0
+#define STATE_TRANS_CMD 1
+#define STATE_TRANS_BUF 2
+#define STATE_TRANS_SG 3
+
+#define TRANS_NOT_READY 0
+#define TRANS_RESULT_OK 1
+#define TRANS_RESULT_FAIL 2
+
+#define SCSI_LUN(srb) ((srb)->device->lun)
+
+typedef unsigned long DELAY_PARA_T;
+
+struct rtsx_chip;
+
+struct rtsx_dev {
+ struct pci_dev *pci;
+
+ /* pci resources */
+ unsigned long addr;
+ void __iomem *remap_addr;
+ int irq;
+
+ /* locks */
+ spinlock_t reg_lock;
+
+ struct task_struct *ctl_thread; /* the control thread */
+ struct task_struct *polling_thread; /* the polling thread */
+
+ /* mutual exclusion and synchronization structures */
+ struct completion cmnd_ready; /* to sleep thread on */
+ struct completion control_exit; /* control thread exit */
+ struct completion polling_exit; /* polling thread exit */
+ struct completion notify; /* thread begin/end */
+ struct completion scanning_done; /* wait for scan thread */
+
+ wait_queue_head_t delay_wait; /* wait during scan, reset */
+ struct mutex dev_mutex;
+
+ /* host reserved buffer */
+ void *rtsx_resv_buf;
+ dma_addr_t rtsx_resv_buf_addr;
+
+ char trans_result;
+ char trans_state;
+
+ struct completion *done;
+ /* Whether interrupt handler should care card cd info */
+ u32 check_card_cd;
+
+ struct rtsx_chip *chip;
+};
+
+typedef struct rtsx_dev rtsx_dev_t;
+
+/* Convert between rtsx_dev and the corresponding Scsi_Host */
+static inline struct Scsi_Host *rtsx_to_host(struct rtsx_dev *dev)
+{
+ return container_of((void *) dev, struct Scsi_Host, hostdata);
+}
+static inline struct rtsx_dev *host_to_rtsx(struct Scsi_Host *host)
+{
+ return (struct rtsx_dev *) host->hostdata;
+}
+
+static inline void get_current_time(u8 *timeval_buf, int buf_len)
+{
+ struct timeval tv;
+
+ if (!timeval_buf || (buf_len < 8))
+ return;
+
+ do_gettimeofday(&tv);
+
+ timeval_buf[0] = (u8)(tv.tv_sec >> 24);
+ timeval_buf[1] = (u8)(tv.tv_sec >> 16);
+ timeval_buf[2] = (u8)(tv.tv_sec >> 8);
+ timeval_buf[3] = (u8)(tv.tv_sec);
+ timeval_buf[4] = (u8)(tv.tv_usec >> 24);
+ timeval_buf[5] = (u8)(tv.tv_usec >> 16);
+ timeval_buf[6] = (u8)(tv.tv_usec >> 8);
+ timeval_buf[7] = (u8)(tv.tv_usec);
+}
+
+/* The scsi_lock() and scsi_unlock() macros protect the sm_state and the
+ * single queue element srb for write access */
+#define scsi_unlock(host) spin_unlock_irq(host->host_lock)
+#define scsi_lock(host) spin_lock_irq(host->host_lock)
+
+#define lock_state(chip) spin_lock_irq(&((chip)->rtsx->reg_lock))
+#define unlock_state(chip) spin_unlock_irq(&((chip)->rtsx->reg_lock))
+
+/* struct scsi_cmnd transfer buffer access utilities */
+enum xfer_buf_dir {TO_XFER_BUF, FROM_XFER_BUF};
+
+int rtsx_read_pci_cfg_byte(u8 bus, u8 dev, u8 func, u8 offset, u8 *val);
+
+#endif /* __REALTEK_RTSX_H */
