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-rw-r--r--include/linux/i2c/pca954x.h47
-rw-r--r--include/linux/i2c/sx150x.h78
2 files changed, 125 insertions, 0 deletions
diff --git a/include/linux/i2c/pca954x.h b/include/linux/i2c/pca954x.h
new file mode 100644
index 000000000000..28f1f8d5ab1f
--- /dev/null
+++ b/include/linux/i2c/pca954x.h
@@ -0,0 +1,47 @@
1/*
2 *
3 * pca954x.h - I2C multiplexer/switch support
4 *
5 * Copyright (c) 2008-2009 Rodolfo Giometti <giometti@linux.it>
6 * Copyright (c) 2008-2009 Eurotech S.p.A. <info@eurotech.it>
7 * Michael Lawnick <michael.lawnick.ext@nsn.com>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 */
23
24
25#ifndef _LINUX_I2C_PCA954X_H
26#define _LINUX_I2C_PCA954X_H
27
28/* Platform data for the PCA954x I2C multiplexers */
29
30/* Per channel initialisation data:
31 * @adap_id: bus number for the adapter. 0 = don't care
32 * @deselect_on_exit: set this entry to 1, if your H/W needs deselection
33 * of this channel after transaction.
34 *
35 */
36struct pca954x_platform_mode {
37 int adap_id;
38 unsigned int deselect_on_exit:1;
39};
40
41/* Per mux/switch data, used with i2c_register_board_info */
42struct pca954x_platform_data {
43 struct pca954x_platform_mode *modes;
44 int num_modes;
45};
46
47#endif /* _LINUX_I2C_PCA954X_H */
diff --git a/include/linux/i2c/sx150x.h b/include/linux/i2c/sx150x.h
new file mode 100644
index 000000000000..ee3049cb9ba5
--- /dev/null
+++ b/include/linux/i2c/sx150x.h
@@ -0,0 +1,78 @@
1/*
2 * Driver for the Semtech SX150x I2C GPIO Expanders
3 *
4 * Copyright (c) 2010, Code Aurora Forum. All rights reserved.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 and
8 * only version 2 as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
18 * 02110-1301, USA.
19 */
20#ifndef __LINUX_I2C_SX150X_H
21#define __LINUX_I2C_SX150X_H
22
23/**
24 * struct sx150x_platform_data - config data for SX150x driver
25 * @gpio_base: The index number of the first GPIO assigned to this
26 * GPIO expander. The expander will create a block of
27 * consecutively numbered gpios beginning at the given base,
28 * with the size of the block depending on the model of the
29 * expander chip.
30 * @oscio_is_gpo: If set to true, the driver will configure OSCIO as a GPO
31 * instead of as an oscillator, increasing the size of the
32 * GP(I)O pool created by this expander by one. The
33 * output-only GPO pin will be added at the end of the block.
34 * @io_pullup_ena: A bit-mask which enables or disables the pull-up resistor
35 * for each IO line in the expander. Setting the bit at
36 * position n will enable the pull-up for the IO at
37 * the corresponding offset. For chips with fewer than
38 * 16 IO pins, high-end bits are ignored.
39 * @io_pulldn_ena: A bit-mask which enables-or disables the pull-down
40 * resistor for each IO line in the expander. Setting the
41 * bit at position n will enable the pull-down for the IO at
42 * the corresponding offset. For chips with fewer than
43 * 16 IO pins, high-end bits are ignored.
44 * @io_open_drain_ena: A bit-mask which enables-or disables open-drain
45 * operation for each IO line in the expander. Setting the
46 * bit at position n enables open-drain operation for
47 * the IO at the corresponding offset. Clearing the bit
48 * enables regular push-pull operation for that IO.
49 * For chips with fewer than 16 IO pins, high-end bits
50 * are ignored.
51 * @io_polarity: A bit-mask which enables polarity inversion for each IO line
52 * in the expander. Setting the bit at position n inverts
53 * the polarity of that IO line, while clearing it results
54 * in normal polarity. For chips with fewer than 16 IO pins,
55 * high-end bits are ignored.
56 * @irq_summary: The 'summary IRQ' line to which the GPIO expander's INT line
57 * is connected, via which it reports interrupt events
58 * across all GPIO lines. This must be a real,
59 * pre-existing IRQ line.
60 * Setting this value < 0 disables the irq_chip functionality
61 * of the driver.
62 * @irq_base: The first 'virtual IRQ' line at which our block of GPIO-based
63 * IRQ lines will appear. Similarly to gpio_base, the expander
64 * will create a block of irqs beginning at this number.
65 * This value is ignored if irq_summary is < 0.
66 */
67struct sx150x_platform_data {
68 unsigned gpio_base;
69 bool oscio_is_gpo;
70 u16 io_pullup_ena;
71 u16 io_pulldn_ena;
72 u16 io_open_drain_ena;
73 u16 io_polarity;
74 int irq_summary;
75 unsigned irq_base;
76};
77
78#endif /* __LINUX_I2C_SX150X_H */
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-28 03:23:33 -0500