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Annotation of sys/arch/sparc64/dev/ofwi2c.c, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: ofwi2c.c,v 1.5 2007/03/29 17:41:33 deraadt Exp $      */
                      2:
                      3: /*
                      4:  * Copyright (c) 2006 Theo de Raadt
                      5:  *
                      6:  * Permission to use, copy, modify, and distribute this software for any
                      7:  * purpose with or without fee is hereby granted, provided that the above
                      8:  * copyright notice and this permission notice appear in all copies.
                      9:  *
                     10:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     11:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     12:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     13:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     14:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
                     15:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
                     16:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     17:  */
                     18:
                     19: #include <sys/param.h>
                     20: #include <sys/systm.h>
                     21: #include <sys/device.h>
                     22:
                     23: #include <dev/i2c/i2cvar.h>
                     24: #include <dev/ofw/openfirm.h>
                     25:
                     26: #include <dev/pci/pcivar.h>
                     27: #include <dev/pci/pcireg.h>
                     28: #include <sparc64/pci_machdep.h>
                     29:
                     30: #include <arch/sparc64/dev/ofwi2cvar.h>
                     31:
                     32: void
                     33: ofwiic_pci_scan(struct device *self, struct i2cbus_attach_args *iba, void *aux)
                     34: {
                     35:        struct pci_attach_args *pa = aux;
                     36:        pcitag_t tag = pa->pa_tag;
                     37:        int iba_node = PCITAG_NODE(tag);
                     38:        char name[32];
                     39:        int node;
                     40:
                     41:        for (node = OF_child(iba_node); node; node = OF_peer(node)) {
                     42:                memset(name, 0, sizeof(name));
                     43:
                     44:                if (OF_getprop(node, "compatible", name, sizeof(name)) == -1)
                     45:                        continue;
                     46:                if (name[0] == '\0')
                     47:                        continue;
                     48:
                     49:                if (strcmp(name, "i2c-smbus") == 0 ||
                     50:                    strcmp(name, "i2c") == 0)
                     51:                        ofwiic_scan(self, iba, &node);
                     52:        }
                     53: }
                     54:
                     55: void
                     56: ofwiic_scan(struct device *self, struct i2cbus_attach_args *iba, void *aux)
                     57: {
                     58:        int iba_node = *(int *)aux;
                     59:        extern int iic_print(void *, const char *);
                     60:        struct i2c_attach_args ia;
                     61:        char name[32];
                     62:        u_int32_t reg[2];
                     63:        int node;
                     64:
                     65:        for (node = OF_child(iba_node); node; node = OF_peer(node)) {
                     66:                memset(name, 0, sizeof(name));
                     67:                memset(reg, 0, sizeof(reg));
                     68:
                     69:                if (OF_getprop(node, "compatible", name, sizeof(name)) == -1)
                     70:                        continue;
                     71:                if (name[0] == '\0')
                     72:                        continue;
                     73:
                     74:                if (OF_getprop(node, "reg", reg, sizeof(reg)) == -1)
                     75:                        continue;
                     76:
                     77:                memset(&ia, 0, sizeof(ia));
                     78:                ia.ia_tag = iba->iba_tag;
                     79:                ia.ia_addr = (reg[0] << 7) | (reg[1] >> 1);
                     80:                ia.ia_name = name;
                     81:                ia.ia_cookie = &node;
                     82:
                     83:                if (strncmp(ia.ia_name, "i2c-", strlen("i2c-")) == 0)
                     84:                        ia.ia_name += strlen("i2c-");
                     85:
                     86:                /* skip totally boring devices */
                     87:                if (strcmp(ia.ia_name, "at24c64") == 0 ||
                     88:                    strcmp(ia.ia_name, "at34c02") == 0)
                     89:                        continue;
                     90:
                     91:                config_found(self, &ia, iic_print);
                     92:        }
                     93: }