22 #include "hw/qdev-core.h"
23 #include "hw/qdev-properties.h"
35  * struct Pca954xState - The pca954x state object.
37  * @channel: The set of i2c channel buses that act as channels which own the
52  * struct Pca954xClass - The pca954x class object.
65  * For each channel, if it's enabled, recursively call match on those children.  in OBJECT_DECLARE_TYPE()
76     if ((candidate->address == address) || broadcast) {  in OBJECT_DECLARE_TYPE()
78         node->elt = candidate;  in OBJECT_DECLARE_TYPE()
85     for (i = 0; i < mc->nchans; i++) {  in OBJECT_DECLARE_TYPE()
86         if (!mux->enabled[i]) {  in OBJECT_DECLARE_TYPE()
90         if (i2c_scan_bus(mux->bus[i], address, broadcast,  in OBJECT_DECLARE_TYPE()
108      * For each channel, check if their bit is set in enable_mask and if yes,  in pca954x_enable_channel()
111     for (i = 0; i < mc->nchans; i++) {  in pca954x_enable_channel()
113             s->enabled[i] = true;  in pca954x_enable_channel()
115             s->enabled[i] = false;  in pca954x_enable_channel()
120 static void pca954x_write(Pca954xState *s, uint8_t data)  in pca954x_write()  argument
122     s->control = data;  in pca954x_write()
123     pca954x_enable_channel(s, data);  in pca954x_write()
125     trace_pca954x_write_bytes(data);  in pca954x_write()
133         qemu_log_mask(LOG_GUEST_ERROR, "%s: writing empty data\n", __func__);  in pca954x_write_data()
134         return -1;  in pca954x_write_data()
142             "%s: extra data after channel selection mask\n",  in pca954x_write_data()
144         return -1;  in pca954x_write_data()
154     uint8_t data = s->control;  in pca954x_read_byte()  local
155     trace_pca954x_read_data(data);  in pca954x_read_byte()
156     return data;  in pca954x_read_byte()
166 I2CBus *pca954x_i2c_get_bus(I2CSlave *mux, uint8_t channel)  in pca954x_i2c_get_bus()  argument
171     g_assert(channel < pc->nchans);  in pca954x_i2c_get_bus()
172     return pca954x->bus[channel];  in pca954x_i2c_get_bus()
175 static void pca9546_class_init(ObjectClass *klass, const void *data)  in pca9546_class_init()  argument
178     s->nchans = PCA9546_CHANNEL_COUNT;  in pca9546_class_init()
181 static void pca9548_class_init(ObjectClass *klass, const void *data)  in pca9548_class_init()  argument
184     s->nchans = PCA9548_CHANNEL_COUNT;  in pca9548_class_init()
191     if (s->name) {  in pca954x_realize()
192         d->id = g_strdup(s->name);  in pca954x_realize()
194         d->id = g_strdup_printf("pca954x[%x]", s->parent.i2c.address);  in pca954x_realize()
205     for (i = 0; i < c->nchans; i++) {  in pca954x_init()
209         s->enabled[i] = false;  in pca954x_init()
210         s->bus[i] = i2c_init_bus(DEVICE(s), bus_name);  in pca954x_init()
218 static void pca954x_class_init(ObjectClass *klass, const void *data)  in pca954x_class_init()  argument
225     sc->match_and_add = pca954x_match;  in pca954x_class_init()
227     rc->phases.enter = pca954x_enter_reset;  in pca954x_class_init()
229     dc->desc = "Pca954x i2c-mux";  in pca954x_class_init()
230     dc->realize = pca954x_realize;  in pca954x_class_init()
232     k->write_data = pca954x_write_data;  in pca954x_class_init()
233     k->receive_byte = pca954x_read_byte;  in pca954x_class_init()