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authorVitaly Wool <vitalywool@gmail.com>2006-12-10 15:21:29 -0500
committerJean Delvare <khali@arrakis.delvare>2006-12-10 15:21:29 -0500
commit41561f28e76a47dc6de0a954da85d0b5c42874eb (patch)
tree0113700403e5fffb57ee41b564ea68bcaab311d9 /include/asm-arm
parent51fd554b6547b74c7e6d1f52885ba8532b531023 (diff)
i2c: New Philips PNX bus driver
New I2C bus driver for Philips ARM boards (Philips IP3204 I2C IP block). This I2C controller can be found on (at least) PNX010x, PNX52xx and PNX4008 Philips boards. Signed-off-by: Vitaly Wool <vitalywool@gmail.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
Diffstat (limited to 'include/asm-arm')
-rw-r--r--include/asm-arm/arch-pnx4008/i2c.h67
1 files changed, 67 insertions, 0 deletions
diff --git a/include/asm-arm/arch-pnx4008/i2c.h b/include/asm-arm/arch-pnx4008/i2c.h
new file mode 100644
index 000000000000..92e8d65006f7
--- /dev/null
+++ b/include/asm-arm/arch-pnx4008/i2c.h
@@ -0,0 +1,67 @@
1/*
2 * PNX4008-specific tweaks for I2C IP3204 block
3 *
4 * Author: Vitaly Wool <vwool@ru.mvista.com>
5 *
6 * 2005 (c) MontaVista Software, Inc. This file is licensed under
7 * the terms of the GNU General Public License version 2. This program
8 * is licensed "as is" without any warranty of any kind, whether express
9 * or implied.
10 */
11
12#ifndef __ASM_ARCH_I2C_H__
13#define __ASM_ARCH_I2C_H__
14
15#include <linux/pm.h>
16#include <linux/platform_device.h>
17
18enum {
19 mstatus_tdi = 0x00000001,
20 mstatus_afi = 0x00000002,
21 mstatus_nai = 0x00000004,
22 mstatus_drmi = 0x00000008,
23 mstatus_active = 0x00000020,
24 mstatus_scl = 0x00000040,
25 mstatus_sda = 0x00000080,
26 mstatus_rff = 0x00000100,
27 mstatus_rfe = 0x00000200,
28 mstatus_tff = 0x00000400,
29 mstatus_tfe = 0x00000800,
30};
31
32enum {
33 mcntrl_tdie = 0x00000001,
34 mcntrl_afie = 0x00000002,
35 mcntrl_naie = 0x00000004,
36 mcntrl_drmie = 0x00000008,
37 mcntrl_daie = 0x00000020,
38 mcntrl_rffie = 0x00000040,
39 mcntrl_tffie = 0x00000080,
40 mcntrl_reset = 0x00000100,
41 mcntrl_cdbmode = 0x00000400,
42};
43
44enum {
45 rw_bit = 1 << 0,
46 start_bit = 1 << 8,
47 stop_bit = 1 << 9,
48};
49
50#define I2C_REG_RX(a) ((a)->ioaddr) /* Rx FIFO reg (RO) */
51#define I2C_REG_TX(a) ((a)->ioaddr) /* Tx FIFO reg (WO) */
52#define I2C_REG_STS(a) ((a)->ioaddr + 0x04) /* Status reg (RO) */
53#define I2C_REG_CTL(a) ((a)->ioaddr + 0x08) /* Ctl reg */
54#define I2C_REG_CKL(a) ((a)->ioaddr + 0x0c) /* Clock divider low */
55#define I2C_REG_CKH(a) ((a)->ioaddr + 0x10) /* Clock divider high */
56#define I2C_REG_ADR(a) ((a)->ioaddr + 0x14) /* I2C address */
57#define I2C_REG_RFL(a) ((a)->ioaddr + 0x18) /* Rx FIFO level (RO) */
58#define I2C_REG_TFL(a) ((a)->ioaddr + 0x1c) /* Tx FIFO level (RO) */
59#define I2C_REG_RXB(a) ((a)->ioaddr + 0x20) /* Num of bytes Rx-ed (RO) */
60#define I2C_REG_TXB(a) ((a)->ioaddr + 0x24) /* Num of bytes Tx-ed (RO) */
61#define I2C_REG_TXS(a) ((a)->ioaddr + 0x28) /* Tx slave FIFO (RO) */
62#define I2C_REG_STFL(a) ((a)->ioaddr + 0x2c) /* Tx slave FIFO level (RO) */
63
64#define HCLK_MHZ 13
65#define I2C_CHIP_NAME "PNX4008-I2C"
66
67#endif /* __ASM_ARCH_I2C_H___ */