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