| iicbb.c (256281) | iicbb.c (266105) |
|---|---|
| 1/*- 2 * Copyright (c) 1998, 2001 Nicolas Souchu 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 11 unchanged lines hidden (view full) --- 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 1998, 2001 Nicolas Souchu 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 11 unchanged lines hidden (view full) --- 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> |
| 28__FBSDID("$FreeBSD: stable/10/sys/dev/iicbus/iicbb.c 232365 2012-03-01 20:58:20Z kan $"); | 28__FBSDID("$FreeBSD: stable/10/sys/dev/iicbus/iicbb.c 266105 2014-05-15 01:27:53Z loos $"); |
| 29 30/* 31 * Generic I2C bit-banging code 32 * 33 * Example: 34 * 35 * iicbus 36 * / \ 37 * iicbb pcf 38 * | \ 39 * bti2c lpbb 40 * 41 * From Linux I2C generic interface 42 * (c) 1998 Gerd Knorr <kraxel@cs.tu-berlin.de> 43 * 44 */ 45 | 29 30/* 31 * Generic I2C bit-banging code 32 * 33 * Example: 34 * 35 * iicbus 36 * / \ 37 * iicbb pcf 38 * | \ 39 * bti2c lpbb 40 * 41 * From Linux I2C generic interface 42 * (c) 1998 Gerd Knorr <kraxel@cs.tu-berlin.de> 43 * 44 */ 45 |
| 46#include "opt_platform.h" 47 |
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| 46#include <sys/param.h> 47#include <sys/kernel.h> 48#include <sys/systm.h> 49#include <sys/module.h> 50#include <sys/bus.h> 51#include <sys/uio.h> 52 | 48#include <sys/param.h> 49#include <sys/kernel.h> 50#include <sys/systm.h> 51#include <sys/module.h> 52#include <sys/bus.h> 53#include <sys/uio.h> 54 |
| 55#ifdef FDT 56#include <dev/ofw/ofw_bus.h> 57#include <dev/ofw/ofw_bus_subr.h> 58#include <dev/fdt/fdt_common.h> 59#endif |
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| 53 54#include <dev/iicbus/iiconf.h> 55#include <dev/iicbus/iicbus.h> 56 57#include <dev/smbus/smbconf.h> 58 59#include "iicbus_if.h" 60#include "iicbb_if.h" --- 11 unchanged lines hidden (view full) --- 72 73static int iicbb_callback(device_t, int, caddr_t); 74static int iicbb_start(device_t, u_char, int); 75static int iicbb_stop(device_t); 76static int iicbb_write(device_t, const char *, int, int *, int); 77static int iicbb_read(device_t, char *, int, int *, int, int); 78static int iicbb_reset(device_t, u_char, u_char, u_char *); 79static int iicbb_transfer(device_t dev, struct iic_msg *msgs, uint32_t nmsgs); | 60 61#include <dev/iicbus/iiconf.h> 62#include <dev/iicbus/iicbus.h> 63 64#include <dev/smbus/smbconf.h> 65 66#include "iicbus_if.h" 67#include "iicbb_if.h" --- 11 unchanged lines hidden (view full) --- 79 80static int iicbb_callback(device_t, int, caddr_t); 81static int iicbb_start(device_t, u_char, int); 82static int iicbb_stop(device_t); 83static int iicbb_write(device_t, const char *, int, int *, int); 84static int iicbb_read(device_t, char *, int, int *, int, int); 85static int iicbb_reset(device_t, u_char, u_char, u_char *); 86static int iicbb_transfer(device_t dev, struct iic_msg *msgs, uint32_t nmsgs); |
| 87#ifdef FDT 88static phandle_t iicbb_get_node(device_t, device_t); 89#endif |
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| 80 81static device_method_t iicbb_methods[] = { 82 /* device interface */ 83 DEVMETHOD(device_probe, iicbb_probe), 84 DEVMETHOD(device_attach, iicbb_attach), 85 DEVMETHOD(device_detach, iicbb_detach), 86 87 /* bus interface */ --- 5 unchanged lines hidden (view full) --- 93 DEVMETHOD(iicbus_start, iicbb_start), 94 DEVMETHOD(iicbus_repeated_start, iicbb_start), 95 DEVMETHOD(iicbus_stop, iicbb_stop), 96 DEVMETHOD(iicbus_write, iicbb_write), 97 DEVMETHOD(iicbus_read, iicbb_read), 98 DEVMETHOD(iicbus_reset, iicbb_reset), 99 DEVMETHOD(iicbus_transfer, iicbb_transfer), 100 | 90 91static device_method_t iicbb_methods[] = { 92 /* device interface */ 93 DEVMETHOD(device_probe, iicbb_probe), 94 DEVMETHOD(device_attach, iicbb_attach), 95 DEVMETHOD(device_detach, iicbb_detach), 96 97 /* bus interface */ --- 5 unchanged lines hidden (view full) --- 103 DEVMETHOD(iicbus_start, iicbb_start), 104 DEVMETHOD(iicbus_repeated_start, iicbb_start), 105 DEVMETHOD(iicbus_stop, iicbb_stop), 106 DEVMETHOD(iicbus_write, iicbb_write), 107 DEVMETHOD(iicbus_read, iicbb_read), 108 DEVMETHOD(iicbus_reset, iicbb_reset), 109 DEVMETHOD(iicbus_transfer, iicbb_transfer), 110 |
| 111#ifdef FDT 112 /* ofw_bus interface */ 113 DEVMETHOD(ofw_bus_get_node, iicbb_get_node), 114#endif 115 |
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| 101 { 0, 0 } 102}; 103 104driver_t iicbb_driver = { 105 "iicbb", 106 iicbb_methods, 107 sizeof(struct iicbb_softc), 108}; --- 40 unchanged lines hidden (view full) --- 149 child = sc->iicbus; 150 bus_generic_detach(dev); 151 if (child) 152 device_delete_child(dev, child); 153 154 return (0); 155} 156 | 116 { 0, 0 } 117}; 118 119driver_t iicbb_driver = { 120 "iicbb", 121 iicbb_methods, 122 sizeof(struct iicbb_softc), 123}; --- 40 unchanged lines hidden (view full) --- 164 child = sc->iicbus; 165 bus_generic_detach(dev); 166 if (child) 167 device_delete_child(dev, child); 168 169 return (0); 170} 171 |
| 172#ifdef FDT 173static phandle_t 174iicbb_get_node(device_t bus, device_t dev) 175{ 176 177 /* We only have one child, the I2C bus, which needs our own node. */ 178 return (ofw_bus_get_node(bus)); 179} 180#endif 181 |
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| 157static void 158iicbb_child_detached( device_t dev, device_t child ) 159{ 160 struct iicbb_softc *sc = (struct iicbb_softc *)device_get_softc(dev); 161 162 if (child == sc->iicbus) 163 sc->iicbus = NULL; 164} --- 282 unchanged lines hidden --- | 182static void 183iicbb_child_detached( device_t dev, device_t child ) 184{ 185 struct iicbb_softc *sc = (struct iicbb_softc *)device_get_softc(dev); 186 187 if (child == sc->iicbus) 188 sc->iicbus = NULL; 189} --- 282 unchanged lines hidden --- |