| @@ -1,14 +1,14 @@ | | | @@ -1,14 +1,14 @@ |
1 | /* $NetBSD: pcai2cmux.c,v 1.3 2021/01/18 15:28:21 thorpej Exp $ */ | | 1 | /* $NetBSD: pcai2cmux.c,v 1.4 2021/01/24 19:37:45 jmcneill Exp $ */ |
2 | | | 2 | |
3 | /*- | | 3 | /*- |
4 | * Copyright (c) 2020 The NetBSD Foundation, Inc. | | 4 | * Copyright (c) 2020 The NetBSD Foundation, Inc. |
5 | * All rights reserved. | | 5 | * All rights reserved. |
6 | * | | 6 | * |
7 | * This code is derived from software contributed to The NetBSD Foundation | | 7 | * This code is derived from software contributed to The NetBSD Foundation |
8 | * by Jason R. Thorpe. | | 8 | * by Jason R. Thorpe. |
9 | * | | 9 | * |
10 | * Redistribution and use in source and binary forms, with or without | | 10 | * Redistribution and use in source and binary forms, with or without |
11 | * modification, are permitted provided that the following conditions | | 11 | * modification, are permitted provided that the following conditions |
12 | * are met: | | 12 | * are met: |
13 | * 1. Redistributions of source code must retain the above copyright | | 13 | * 1. Redistributions of source code must retain the above copyright |
14 | * notice, this list of conditions and the following disclaimer. | | 14 | * notice, this list of conditions and the following disclaimer. |
| @@ -20,27 +20,27 @@ | | | @@ -20,27 +20,27 @@ |
20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED | | 20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | | 21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS | | 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | | 23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | | 24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | | 25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | | 26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | | 27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | | 28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
29 | * POSSIBILITY OF SUCH DAMAGE. | | 29 | * POSSIBILITY OF SUCH DAMAGE. |
30 | */ | | 30 | */ |
31 | | | 31 | |
32 | #include <sys/cdefs.h> | | 32 | #include <sys/cdefs.h> |
33 | __KERNEL_RCSID(0, "$NetBSD: pcai2cmux.c,v 1.3 2021/01/18 15:28:21 thorpej Exp $"); | | 33 | __KERNEL_RCSID(0, "$NetBSD: pcai2cmux.c,v 1.4 2021/01/24 19:37:45 jmcneill Exp $"); |
34 | | | 34 | |
35 | /* | | 35 | /* |
36 | * Driver for NXP PCA954x / PCA984x I2C switches and multiplexers. | | 36 | * Driver for NXP PCA954x / PCA984x I2C switches and multiplexers. |
37 | * | | 37 | * |
38 | * There are two flavors of this device: | | 38 | * There are two flavors of this device: |
39 | * | | 39 | * |
40 | * - Multiplexers, which connect the upstream bus to one downstream bus | | 40 | * - Multiplexers, which connect the upstream bus to one downstream bus |
41 | * at a time. | | 41 | * at a time. |
42 | * | | 42 | * |
43 | * - Switches, which can connect the upstream bus to one or more downstream | | 43 | * - Switches, which can connect the upstream bus to one or more downstream |
44 | * busses at a time (which is useful when using an all-call address for | | 44 | * busses at a time (which is useful when using an all-call address for |
45 | * a large array of PCA9685 LED controllers, for example). | | 45 | * a large array of PCA9685 LED controllers, for example). |
46 | * | | 46 | * |
| @@ -116,26 +116,30 @@ static const struct device_compatible_en | | | @@ -116,26 +116,30 @@ static const struct device_compatible_en |
116 | | | 116 | |
117 | /* PCA9545 - 4 channel i2c switch with interrupts */ | | 117 | /* PCA9545 - 4 channel i2c switch with interrupts */ |
118 | { .compat = "nxp,pca9545", | | 118 | { .compat = "nxp,pca9545", |
119 | .data = &switch4_type }, | | 119 | .data = &switch4_type }, |
120 | | | 120 | |
121 | /* PCA9546 - 4 channel i2c switch */ | | 121 | /* PCA9546 - 4 channel i2c switch */ |
122 | { .compat = "nxp,pca9546", | | 122 | { .compat = "nxp,pca9546", |
123 | .data = &switch4_type }, | | 123 | .data = &switch4_type }, |
124 | | | 124 | |
125 | /* PCA9547 - 8 channel i2c mux */ | | 125 | /* PCA9547 - 8 channel i2c mux */ |
126 | { .compat = "nxp,pca9547", | | 126 | { .compat = "nxp,pca9547", |
127 | .data = &mux8_type }, | | 127 | .data = &mux8_type }, |
128 | | | 128 | |
| | | 129 | /* PCA9547 - 8 channel i2c mux (NXP Layerscape ACPI) */ |
| | | 130 | { .compat = "NXP0002", |
| | | 131 | .data = &mux8_type }, |
| | | 132 | |
129 | /* PCA9548 - 8 channel i2c switch */ | | 133 | /* PCA9548 - 8 channel i2c switch */ |
130 | { .compat = "nxp,pca9548", | | 134 | { .compat = "nxp,pca9548", |
131 | .data = &switch8_type }, | | 135 | .data = &switch8_type }, |
132 | | | 136 | |
133 | /* PCA9846 - 4 channel i2c switch */ | | 137 | /* PCA9846 - 4 channel i2c switch */ |
134 | { .compat = "nxp,pca9846", | | 138 | { .compat = "nxp,pca9846", |
135 | .data = &switch4_type }, | | 139 | .data = &switch4_type }, |
136 | | | 140 | |
137 | /* PCA9847 - 8 channel i2c mux */ | | 141 | /* PCA9847 - 8 channel i2c mux */ |
138 | { .compat = "nxp,pca9847", | | 142 | { .compat = "nxp,pca9847", |
139 | .data = &mux8_type }, | | 143 | .data = &mux8_type }, |
140 | | | 144 | |
141 | /* PCA9848 - 8 channel i2c switch */ | | 145 | /* PCA9848 - 8 channel i2c switch */ |
| @@ -281,27 +285,27 @@ pcaiicmux_type_by_compat(const struct i2 | | | @@ -281,27 +285,27 @@ pcaiicmux_type_by_compat(const struct i2 |
281 | | | 285 | |
282 | return type; | | 286 | return type; |
283 | } | | 287 | } |
284 | | | 288 | |
285 | static int | | 289 | static int |
286 | pcaiicmux_match(device_t parent, cfdata_t cf, void *aux) | | 290 | pcaiicmux_match(device_t parent, cfdata_t cf, void *aux) |
287 | { | | 291 | { |
288 | struct i2c_attach_args * const ia = aux; | | 292 | struct i2c_attach_args * const ia = aux; |
289 | int match_result; | | 293 | int match_result; |
290 | | | 294 | |
291 | if (iic_use_direct_match(ia, cf, compat_data, &match_result)) { | | 295 | if (iic_use_direct_match(ia, cf, compat_data, &match_result)) { |
292 | return match_result; | | 296 | return match_result; |
293 | } | | 297 | } |
294 | | | 298 | |
295 | /* This device is direct-config only. */ | | 299 | /* This device is direct-config only. */ |
296 | | | 300 | |
297 | return 0; | | 301 | return 0; |
298 | } | | 302 | } |
299 | | | 303 | |
300 | static void | | 304 | static void |
301 | pcaiicmux_attach(device_t parent, device_t self, void *aux) | | 305 | pcaiicmux_attach(device_t parent, device_t self, void *aux) |
302 | { | | 306 | { |
303 | struct pcaiicmux_softc * const sc = device_private(self); | | 307 | struct pcaiicmux_softc * const sc = device_private(self); |
304 | struct i2c_attach_args * const ia = aux; | | 308 | struct i2c_attach_args * const ia = aux; |
305 | const int phandle = (int)ia->ia_cookie; | | 309 | const int phandle = (int)ia->ia_cookie; |
306 | int error; | | 310 | int error; |
307 | | | 311 | |