1 files changed, 378 insertions, 0 deletions

diff --git a/drivers/media/video/cx18/cx18-io.h b/drivers/media/video/cx18/cx18-io.h
new file mode 100644
index 000000000000..197d4fbd9f95
--- /dev/null
+++ b/drivers/media/video/cx18/cx18-io.h
@@ -0,0 +1,378 @@
+/*
+ *  cx18 driver PCI memory mapped IO access routines
+ *
+ *  Copyright (C) 2007  Hans Verkuil <hverkuil@xs4all.nl>
+ *  Copyright (C) 2008  Andy Walls <awalls@radix.net>
+ *
+ *  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., 59 Temple Place, Suite 330, Boston, MA
+ *  02111-1307  USA
+ */
+
+#ifndef CX18_IO_H
+#define CX18_IO_H
+
+#include "cx18-driver.h"
+
+static inline void cx18_io_delay(struct cx18 *cx)
+{
+        if (cx->options.mmio_ndelay)
+                ndelay(cx->options.mmio_ndelay);
+}
+
+/*
+ * Readback and retry of MMIO access for reliability:
+ * The concept was suggested by Steve Toth <stoth@linuxtv.org>.
+ * The implmentation is the fault of Andy Walls <awalls@radix.net>.
+ */
+
+/* Statistics gathering */
+static inline
+void cx18_log_write_retries(struct cx18 *cx, int i, const void *addr)
+{
+        if (i > CX18_MAX_MMIO_RETRIES)
+                i = CX18_MAX_MMIO_RETRIES;
+        atomic_inc(&cx->mmio_stats.retried_write[i]);
+        return;
+}
+
+static inline
+void cx18_log_read_retries(struct cx18 *cx, int i, const void *addr)
+{
+        if (i > CX18_MAX_MMIO_RETRIES)
+                i = CX18_MAX_MMIO_RETRIES;
+        atomic_inc(&cx->mmio_stats.retried_read[i]);
+        return;
+}
+
+void cx18_log_statistics(struct cx18 *cx);
+
+/* Non byteswapping memory mapped IO */
+static inline
+void cx18_raw_writel_noretry(struct cx18 *cx, u32 val, void __iomem *addr)
+{
+        __raw_writel(val, addr);
+        cx18_io_delay(cx);
+}
+
+void cx18_raw_writel_retry(struct cx18 *cx, u32 val, void __iomem *addr);
+
+static inline void cx18_raw_writel(struct cx18 *cx, u32 val, void __iomem *addr)
+{
+        if (cx18_retry_mmio)
+                cx18_raw_writel_retry(cx, val, addr);
+        else
+                cx18_raw_writel_noretry(cx, val, addr);
+}
+
+
+static inline
+u32 cx18_raw_readl_noretry(struct cx18 *cx, const void __iomem *addr)
+{
+        u32 ret = __raw_readl(addr);
+        cx18_io_delay(cx);
+        return ret;
+}
+
+u32 cx18_raw_readl_retry(struct cx18 *cx, const void __iomem *addr);
+
+static inline u32 cx18_raw_readl(struct cx18 *cx, const void __iomem *addr)
+{
+        if (cx18_retry_mmio)
+                return cx18_raw_readl_retry(cx, addr);
+
+        return cx18_raw_readl_noretry(cx, addr);
+}
+
+
+static inline
+u16 cx18_raw_readw_noretry(struct cx18 *cx, const void __iomem *addr)
+{
+        u16 ret = __raw_readw(addr);
+        cx18_io_delay(cx);
+        return ret;
+}
+
+u16 cx18_raw_readw_retry(struct cx18 *cx, const void __iomem *addr);
+
+static inline u16 cx18_raw_readw(struct cx18 *cx, const void __iomem *addr)
+{
+        if (cx18_retry_mmio)
+                return cx18_raw_readw_retry(cx, addr);
+
+        return cx18_raw_readw_noretry(cx, addr);
+}
+
+
+/* Normal memory mapped IO */
+static inline
+void cx18_writel_noretry(struct cx18 *cx, u32 val, void __iomem *addr)
+{
+        writel(val, addr);
+        cx18_io_delay(cx);
+}
+
+void cx18_writel_retry(struct cx18 *cx, u32 val, void __iomem *addr);
+
+static inline void cx18_writel(struct cx18 *cx, u32 val, void __iomem *addr)
+{
+        if (cx18_retry_mmio)
+                cx18_writel_retry(cx, val, addr);
+        else
+                cx18_writel_noretry(cx, val, addr);
+}
+
+
+static inline
+void cx18_writew_noretry(struct cx18 *cx, u16 val, void __iomem *addr)
+{
+        writew(val, addr);
+        cx18_io_delay(cx);
+}
+
+void cx18_writew_retry(struct cx18 *cx, u16 val, void __iomem *addr);
+
+static inline void cx18_writew(struct cx18 *cx, u16 val, void __iomem *addr)
+{
+        if (cx18_retry_mmio)
+                cx18_writew_retry(cx, val, addr);
+        else
+                cx18_writew_noretry(cx, val, addr);
+}
+
+
+static inline
+void cx18_writeb_noretry(struct cx18 *cx, u8 val, void __iomem *addr)
+{
+        writeb(val, addr);
+        cx18_io_delay(cx);
+}
+
+void cx18_writeb_retry(struct cx18 *cx, u8 val, void __iomem *addr);
+
+static inline void cx18_writeb(struct cx18 *cx, u8 val, void __iomem *addr)
+{
+        if (cx18_retry_mmio)
+                cx18_writeb_retry(cx, val, addr);
+        else
+                cx18_writeb_noretry(cx, val, addr);
+}
+
+
+static inline u32 cx18_readl_noretry(struct cx18 *cx, const void __iomem *addr)
+{
+        u32 ret = readl(addr);
+        cx18_io_delay(cx);
+        return ret;
+}
+
+u32 cx18_readl_retry(struct cx18 *cx, const void __iomem *addr);
+
+static inline u32 cx18_readl(struct cx18 *cx, const void __iomem *addr)
+{
+        if (cx18_retry_mmio)
+                return cx18_readl_retry(cx, addr);
+
+        return cx18_readl_noretry(cx, addr);
+}
+
+
+static inline u16 cx18_readw_noretry(struct cx18 *cx, const void __iomem *addr)
+{
+        u16 ret = readw(addr);
+        cx18_io_delay(cx);
+        return ret;
+}
+
+u16 cx18_readw_retry(struct cx18 *cx, const void __iomem *addr);
+
+static inline u16 cx18_readw(struct cx18 *cx, const void __iomem *addr)
+{
+        if (cx18_retry_mmio)
+                return cx18_readw_retry(cx, addr);
+
+        return cx18_readw_noretry(cx, addr);
+}
+
+
+static inline u8 cx18_readb_noretry(struct cx18 *cx, const void __iomem *addr)
+{
+        u8 ret = readb(addr);
+        cx18_io_delay(cx);
+        return ret;
+}
+
+u8 cx18_readb_retry(struct cx18 *cx, const void __iomem *addr);
+
+static inline u8 cx18_readb(struct cx18 *cx, const void __iomem *addr)
+{
+        if (cx18_retry_mmio)
+                return cx18_readb_retry(cx, addr);
+
+        return cx18_readb_noretry(cx, addr);
+}
+
+
+static inline
+u32 cx18_write_sync_noretry(struct cx18 *cx, u32 val, void __iomem *addr)
+{
+        cx18_writel_noretry(cx, val, addr);
+        return cx18_readl_noretry(cx, addr);
+}
+
+static inline
+u32 cx18_write_sync_retry(struct cx18 *cx, u32 val, void __iomem *addr)
+{
+        cx18_writel_retry(cx, val, addr);
+        return cx18_readl_retry(cx, addr);
+}
+
+static inline u32 cx18_write_sync(struct cx18 *cx, u32 val, void __iomem *addr)
+{
+        if (cx18_retry_mmio)
+                return cx18_write_sync_retry(cx, val, addr);
+
+        return cx18_write_sync_noretry(cx, val, addr);
+}
+
+
+void cx18_memcpy_fromio(struct cx18 *cx, void *to,
+                        const void __iomem *from, unsigned int len);
+void cx18_memset_io(struct cx18 *cx, void __iomem *addr, int val, size_t count);
+
+
+/* Access "register" region of CX23418 memory mapped I/O */
+static inline void cx18_write_reg_noretry(struct cx18 *cx, u32 val, u32 reg)
+{
+        cx18_writel_noretry(cx, val, cx->reg_mem + reg);
+}
+
+static inline void cx18_write_reg_retry(struct cx18 *cx, u32 val, u32 reg)
+{
+        cx18_writel_retry(cx, val, cx->reg_mem + reg);
+}
+
+static inline void cx18_write_reg(struct cx18 *cx, u32 val, u32 reg)
+{
+        if (cx18_retry_mmio)
+                cx18_write_reg_retry(cx, val, reg);
+        else
+                cx18_write_reg_noretry(cx, val, reg);
+}
+
+
+static inline u32 cx18_read_reg_noretry(struct cx18 *cx, u32 reg)
+{
+        return cx18_readl_noretry(cx, cx->reg_mem + reg);
+}
+
+static inline u32 cx18_read_reg_retry(struct cx18 *cx, u32 reg)
+{
+        return cx18_readl_retry(cx, cx->reg_mem + reg);
+}
+
+static inline u32 cx18_read_reg(struct cx18 *cx, u32 reg)
+{
+        if (cx18_retry_mmio)
+                return cx18_read_reg_retry(cx, reg);
+
+        return cx18_read_reg_noretry(cx, reg);
+}
+
+
+static inline u32 cx18_write_reg_sync_noretry(struct cx18 *cx, u32 val, u32 reg)
+{
+        return cx18_write_sync_noretry(cx, val, cx->reg_mem + reg);
+}
+
+static inline u32 cx18_write_reg_sync_retry(struct cx18 *cx, u32 val, u32 reg)
+{
+        return cx18_write_sync_retry(cx, val, cx->reg_mem + reg);
+}
+
+static inline u32 cx18_write_reg_sync(struct cx18 *cx, u32 val, u32 reg)
+{
+        if (cx18_retry_mmio)
+                return cx18_write_reg_sync_retry(cx, val, reg);
+
+        return cx18_write_reg_sync_noretry(cx, val, reg);
+}
+
+
+/* Access "encoder memory" region of CX23418 memory mapped I/O */
+static inline void cx18_write_enc_noretry(struct cx18 *cx, u32 val, u32 addr)
+{
+        cx18_writel_noretry(cx, val, cx->enc_mem + addr);
+}
+
+static inline void cx18_write_enc_retry(struct cx18 *cx, u32 val, u32 addr)
+{
+        cx18_writel_retry(cx, val, cx->enc_mem + addr);
+}
+
+static inline void cx18_write_enc(struct cx18 *cx, u32 val, u32 addr)
+{
+        if (cx18_retry_mmio)
+                cx18_write_enc_retry(cx, val, addr);
+        else
+                cx18_write_enc_noretry(cx, val, addr);
+}
+
+
+static inline u32 cx18_read_enc_noretry(struct cx18 *cx, u32 addr)
+{
+        return cx18_readl_noretry(cx, cx->enc_mem + addr);
+}
+
+static inline u32 cx18_read_enc_retry(struct cx18 *cx, u32 addr)
+{
+        return cx18_readl_retry(cx, cx->enc_mem + addr);
+}
+
+static inline u32 cx18_read_enc(struct cx18 *cx, u32 addr)
+{
+        if (cx18_retry_mmio)
+                return cx18_read_enc_retry(cx, addr);
+
+        return cx18_read_enc_noretry(cx, addr);
+}
+
+static inline
+u32 cx18_write_enc_sync_noretry(struct cx18 *cx, u32 val, u32 addr)
+{
+        return cx18_write_sync_noretry(cx, val, cx->enc_mem + addr);
+}
+
+static inline
+u32 cx18_write_enc_sync_retry(struct cx18 *cx, u32 val, u32 addr)
+{
+        return cx18_write_sync_retry(cx, val, cx->enc_mem + addr);
+}
+
+static inline
+u32 cx18_write_enc_sync(struct cx18 *cx, u32 val, u32 addr)
+{
+        if (cx18_retry_mmio)
+                return cx18_write_enc_sync_retry(cx, val, addr);
+
+        return cx18_write_enc_sync_noretry(cx, val, addr);
+}
+
+void cx18_sw1_irq_enable(struct cx18 *cx, u32 val);
+void cx18_sw1_irq_disable(struct cx18 *cx, u32 val);
+void cx18_sw2_irq_enable(struct cx18 *cx, u32 val);
+void cx18_sw2_irq_disable(struct cx18 *cx, u32 val);
+void cx18_setup_page(struct cx18 *cx, u32 addr);
+
+#endif /* CX18_IO_H */