diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/i2c/algos/i2c-algo-ite.h |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'drivers/i2c/algos/i2c-algo-ite.h')
-rw-r--r-- | drivers/i2c/algos/i2c-algo-ite.h | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/drivers/i2c/algos/i2c-algo-ite.h b/drivers/i2c/algos/i2c-algo-ite.h new file mode 100644 index 000000000000..a8ca3c9b546a --- /dev/null +++ b/drivers/i2c/algos/i2c-algo-ite.h | |||
@@ -0,0 +1,117 @@ | |||
1 | /* | ||
2 | -------------------------------------------------------------------- | ||
3 | i2c-ite.h: Global defines for the I2C controller on board the | ||
4 | ITE MIPS processor. | ||
5 | -------------------------------------------------------------------- | ||
6 | Hai-Pao Fan, MontaVista Software, Inc. | ||
7 | hpfan@mvista.com or source@mvista.com | ||
8 | |||
9 | Copyright 2001 MontaVista Software Inc. | ||
10 | |||
11 | * This program is free software; you can redistribute it and/or modify it | ||
12 | * under the terms of the GNU General Public License as published by the | ||
13 | * Free Software Foundation; either version 2 of the License, or (at your | ||
14 | * option) any later version. | ||
15 | * | ||
16 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | ||
17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | ||
18 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN | ||
19 | * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | ||
20 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | ||
21 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF | ||
22 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON | ||
23 | * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||
24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | ||
25 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
26 | * | ||
27 | * You should have received a copy of the GNU General Public License along | ||
28 | * with this program; if not, write to the Free Software Foundation, Inc., | ||
29 | * 675 Mass Ave, Cambridge, MA 02139, USA. | ||
30 | |||
31 | */ | ||
32 | |||
33 | #ifndef I2C_ITE_H | ||
34 | #define I2C_ITE_H 1 | ||
35 | |||
36 | #include <asm/it8172/it8172.h> | ||
37 | |||
38 | /* I2C Registers */ | ||
39 | #define ITE_I2CHCR IT8172_PCI_IO_BASE + IT_I2C_BASE + 0x30 | ||
40 | #define ITE_I2CHSR IT8172_PCI_IO_BASE + IT_I2C_BASE + 0x34 | ||
41 | #define ITE_I2CSAR IT8172_PCI_IO_BASE + IT_I2C_BASE + 0x38 | ||
42 | #define ITE_I2CSSAR IT8172_PCI_IO_BASE + IT_I2C_BASE + 0x3c | ||
43 | #define ITE_I2CCKCNT IT8172_PCI_IO_BASE + IT_I2C_BASE + 0x48 | ||
44 | #define ITE_I2CSHDR IT8172_PCI_IO_BASE + IT_I2C_BASE + 0x4c | ||
45 | #define ITE_I2CRSUR IT8172_PCI_IO_BASE + IT_I2C_BASE + 0x50 | ||
46 | #define ITE_I2CPSUR IT8172_PCI_IO_BASE + IT_I2C_BASE + 0x54 | ||
47 | |||
48 | #define ITE_I2CFDR IT8172_PCI_IO_BASE + IT_I2C_BASE + 0x70 | ||
49 | #define ITE_I2CFBCR IT8172_PCI_IO_BASE + IT_I2C_BASE + 0x74 | ||
50 | #define ITE_I2CFCR IT8172_PCI_IO_BASE + IT_I2C_BASE + 0x78 | ||
51 | #define ITE_I2CFSR IT8172_PCI_IO_BASE + IT_I2C_BASE + 0x7c | ||
52 | |||
53 | |||
54 | /* Host Control Register ITE_I2CHCR */ | ||
55 | #define ITE_I2CHCR_HCE 0x01 /* Enable I2C Host Controller */ | ||
56 | #define ITE_I2CHCR_IE 0x02 /* Enable the interrupt after completing | ||
57 | the current transaction */ | ||
58 | #define ITE_I2CHCR_CP_W 0x00 /* bit2-4 000 - Write */ | ||
59 | #define ITE_I2CHCR_CP_R 0x08 /* 010 - Current address read */ | ||
60 | #define ITE_I2CHCR_CP_S 0x10 /* 100 - Sequential read */ | ||
61 | #define ITE_I2CHCR_ST 0x20 /* Initiates the I2C host controller to execute | ||
62 | the command and send the data programmed in | ||
63 | all required registers to I2C bus */ | ||
64 | #define ITE_CMD ITE_I2CHCR_HCE | ITE_I2CHCR_IE | ITE_I2CHCR_ST | ||
65 | #define ITE_WRITE ITE_CMD | ITE_I2CHCR_CP_W | ||
66 | #define ITE_READ ITE_CMD | ITE_I2CHCR_CP_R | ||
67 | #define ITE_SREAD ITE_CMD | ITE_I2CHCR_CP_S | ||
68 | |||
69 | /* Host Status Register ITE_I2CHSR */ | ||
70 | #define ITE_I2CHSR_DB 0x01 /* Device is busy, receives NACK response except | ||
71 | in the first and last bytes */ | ||
72 | #define ITE_I2CHSR_DNE 0x02 /* Target address on I2C bus does not exist */ | ||
73 | #define ITE_I2CHSR_TDI 0x04 /* R/W Transaction on I2C bus was completed */ | ||
74 | #define ITE_I2CHSR_HB 0x08 /* Host controller is processing transactions */ | ||
75 | #define ITE_I2CHSR_FER 0x10 /* Error occurs in the FIFO */ | ||
76 | |||
77 | /* Slave Address Register ITE_I2CSAR */ | ||
78 | #define ITE_I2CSAR_SA_MASK 0xfe /* Target I2C device address */ | ||
79 | #define ITE_I2CSAR_ASO 0x0100 /* Output 1/0 to I2CAS port when the | ||
80 | next slave address is addressed */ | ||
81 | |||
82 | /* Slave Sub-address Register ITE_I2CSSAR */ | ||
83 | #define ITE_I2CSSAR_SUBA_MASK 0xff /* Target I2C device sub-address */ | ||
84 | |||
85 | /* Clock Counter Register ITE_I2CCKCNT */ | ||
86 | #define ITE_I2CCKCNT_STOP 0x00 /* stop I2C clock */ | ||
87 | #define ITE_I2CCKCNT_HPCC_MASK 0x7f /* SCL high period counter */ | ||
88 | #define ITE_I2CCKCNT_LPCC_MASK 0x7f00 /* SCL low period counter */ | ||
89 | |||
90 | /* START Hold Time Register ITE_I2CSHDR */ | ||
91 | /* value is counted based on 16 MHz internal clock */ | ||
92 | #define ITE_I2CSHDR_FM 0x0a /* START condition at fast mode */ | ||
93 | #define ITE_I2CSHDR_SM 0x47 /* START contition at standard mode */ | ||
94 | |||
95 | /* (Repeated) START Setup Time Register ITE_I2CRSUR */ | ||
96 | /* value is counted based on 16 MHz internal clock */ | ||
97 | #define ITE_I2CRSUR_FM 0x0a /* repeated START condition at fast mode */ | ||
98 | #define ITE_I2CRSUR_SM 0x50 /* repeated START condition at standard mode */ | ||
99 | |||
100 | /* STOP setup Time Register ITE_I2CPSUR */ | ||
101 | |||
102 | /* FIFO Data Register ITE_I2CFDR */ | ||
103 | #define ITE_I2CFDR_MASK 0xff | ||
104 | |||
105 | /* FIFO Byte Count Register ITE_I2CFBCR */ | ||
106 | #define ITE_I2CFBCR_MASK 0x3f | ||
107 | |||
108 | /* FIFO Control Register ITE_I2CFCR */ | ||
109 | #define ITE_I2CFCR_FLUSH 0x01 /* Flush FIFO and reset the FIFO point | ||
110 | and I2CFSR */ | ||
111 | /* FIFO Status Register ITE_I2CFSR */ | ||
112 | #define ITE_I2CFSR_FO 0x01 /* FIFO is overrun when write */ | ||
113 | #define ITE_I2CFSR_FU 0x02 /* FIFO is underrun when read */ | ||
114 | #define ITE_I2CFSR_FF 0x04 /* FIFO is full when write */ | ||
115 | #define ITE_I2CFSR_FE 0x08 /* FIFO is empty when read */ | ||
116 | |||
117 | #endif /* I2C_ITE_H */ | ||