2 * cx18 driver PCI memory mapped IO access routines
4 * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
5 * Copyright (C) 2008 Andy Walls <awalls@radix.net>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
23 #include "cx18-driver.h"
26 void cx18_raw_writel(struct cx18 *cx, u32 val, void __iomem *addr)
28 __raw_writel(val, addr);
31 u32 cx18_raw_readl(struct cx18 *cx, const void __iomem *addr)
33 return __raw_readl(addr);
36 u32 cx18_write_sync(struct cx18 *cx, u32 val, void __iomem *addr)
42 void cx18_writel(struct cx18 *cx, u32 val, void __iomem *addr)
47 u32 cx18_readl(struct cx18 *cx, const void __iomem *addr)
53 /* Access "register" region of CX23418 memory mapped I/O */
54 u32 cx18_read_reg(struct cx18 *cx, u32 reg)
56 return readl(cx->reg_mem + reg);
59 void cx18_write_reg(struct cx18 *cx, u32 val, u32 reg)
61 writel(val, cx->reg_mem + reg);
64 u32 cx18_write_reg_sync(struct cx18 *cx, u32 val, u32 reg)
66 return cx18_write_sync(cx, val, cx->reg_mem + reg);
69 /* Access "encoder memory" region of CX23418 memory mapped I/O */
70 u32 cx18_read_enc(struct cx18 *cx, u32 addr)
72 return readl(cx->enc_mem + addr);
75 void cx18_write_enc(struct cx18 *cx, u32 val, u32 addr)
77 writel(val, cx->enc_mem + addr);
80 u32 cx18_write_enc_sync(struct cx18 *cx, u32 val, u32 addr)
82 return cx18_write_sync(cx, val, cx->enc_mem + addr);
85 void cx18_memcpy_fromio(struct cx18 *cx, void *to,
86 const void __iomem *from, unsigned int len)
88 memcpy_fromio(to, from, len);
91 void cx18_memset_io(struct cx18 *cx, void __iomem *addr, int val, size_t count)
93 memset_io(addr, val, count);
96 void cx18_sw1_irq_enable(struct cx18 *cx, u32 val)
99 cx18_write_reg(cx, val, SW1_INT_STATUS);
100 r = cx18_read_reg(cx, SW1_INT_ENABLE_PCI);
101 cx18_write_reg(cx, r | val, SW1_INT_ENABLE_PCI);
104 void cx18_sw1_irq_disable(struct cx18 *cx, u32 val)
107 r = cx18_read_reg(cx, SW1_INT_ENABLE_PCI);
108 cx18_write_reg(cx, r & ~val, SW1_INT_ENABLE_PCI);
111 void cx18_sw2_irq_enable(struct cx18 *cx, u32 val)
114 cx18_write_reg(cx, val, SW2_INT_STATUS);
115 r = cx18_read_reg(cx, SW2_INT_ENABLE_PCI);
116 cx18_write_reg(cx, r | val, SW2_INT_ENABLE_PCI);
119 void cx18_sw2_irq_disable(struct cx18 *cx, u32 val)
122 r = cx18_read_reg(cx, SW2_INT_ENABLE_PCI);
123 cx18_write_reg(cx, r & ~val, SW2_INT_ENABLE_PCI);
126 void cx18_setup_page(struct cx18 *cx, u32 addr)
129 val = cx18_read_reg(cx, 0xD000F8);
130 val = (val & ~0x1f00) | ((addr >> 17) & 0x1f00);
131 cx18_write_reg(cx, val, 0xD000F8);
134 /* Tries to recover from the CX23418 responding improperly on the PCI bus */
135 int cx18_pci_try_recover(struct cx18 *cx)
139 pci_read_config_word(cx->dev, PCI_STATUS, &status);
140 pci_write_config_word(cx->dev, PCI_STATUS, status);