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[src/thorpej-i2c-spi-conf]: src/sys/arch/sandpoint/sandpoint Use a private de...



details:   https://anonhg.NetBSD.org/src/rev/9cf5dac0f660
branches:  thorpej-i2c-spi-conf
changeset: 1020782:9cf5dac0f660
user:      thorpej <thorpej%NetBSD.org@localhost>
date:      Sun Apr 25 23:19:16 2021 +0000

description:
Use a private devhandle to implement i2c device enumeration on the
Sandpoint-based NAS devices.

diffstat:

 sys/arch/sandpoint/sandpoint/autoconf.c |  222 +++++++++++++++++++++++--------
 1 files changed, 162 insertions(+), 60 deletions(-)

diffs (263 lines):

diff -r 0b8af485d1e7 -r 9cf5dac0f660 sys/arch/sandpoint/sandpoint/autoconf.c
--- a/sys/arch/sandpoint/sandpoint/autoconf.c   Sun Apr 25 22:20:08 2021 +0000
+++ b/sys/arch/sandpoint/sandpoint/autoconf.c   Sun Apr 25 23:19:16 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: autoconf.c,v 1.29 2020/07/09 05:12:09 nisimura Exp $   */
+/*     $NetBSD: autoconf.c,v 1.29.6.1 2021/04/25 23:19:16 thorpej Exp $        */
 
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
@@ -35,7 +35,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.29 2020/07/09 05:12:09 nisimura Exp $");
+__KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.29.6.1 2021/04/25 23:19:16 thorpej Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -44,6 +44,7 @@
 
 #include <dev/cons.h>
 #include <dev/pci/pcivar.h>
+#include <dev/i2c/i2cvar.h>
 
 #include <net/if.h>
 #include <net/if_ether.h>
@@ -57,31 +58,167 @@
 static struct btinfo_prodfamily *bi_pfam;
 static struct btinfo_model *bi_model;
 
-struct i2c_dev {
-       const char      *name;
-       unsigned        addr;
-       /* only attach when one of these bits in the model flags is set */
+struct sandpoint_i2cdev {
+       const char *    name;
+       const char *    compat;
        uint32_t        model_mask;
+       i2c_addr_t      addr;
+};
+
+static const struct sandpoint_i2cdev dlink_i2cdevs[] = {
+[0] =  {
+               .name = "strtc",
+               .compat = "st,m41t80",
+               .addr = 0x68,
+       },
+[1] =  {
+               .name = NULL
+       }
+};
+
+static const struct sandpoint_i2cdev iomega_i2cdevs[] = {
+[0] =  {
+               .name = "dsrtc",
+               .compat = "dallas,ds1307",
+               .addr = 0x68,
+       },
+[1] =  {
+               .name = NULL
+       }
 };
 
-#define MAXI2CDEVS     4
-struct model_i2c {
-       const char      *family;
-       struct i2c_dev  i2c_devs[MAXI2CDEVS];
+static const struct sandpoint_i2cdev kurobox_i2cdevs[] = {
+[0] =  {
+               .name = "rs5c372rtc",
+               .compat = "ricoh,rs5c372a",
+               .addr = 0x32,
+       },
+[1] =  {
+               .name = NULL
+       }
+};
+
+static const struct sandpoint_i2cdev nhnas_i2cdevs[] = {
+[0] =  {
+               .name = "pcf8563rtc",
+               .compat = "nxp,pcf8563",
+               .addr = 0x51,
+       },
+[1] =  {
+               .name = NULL
+       }
+};
+
+static const struct sandpoint_i2cdev qnap_i2cdevs[] = {
+[0] =  {
+               .name = "s390rtc",
+               .compat = "sii,s35390a",
+               .addr = 0x30,
+       },
+[1] =  {
+               .name = NULL
+       }
+};
+
+static const struct sandpoint_i2cdev synology_i2cdevs[] = {
+[0] =  {
+               .name = "rs5c372rtc",
+               .compat = "ricoh,rs5c372a",
+               .addr = 0x32,
+       },
+[1] =  {
+               .name = "lmtemp",
+               .compat = "national,lm75",
+               .addr = 0x48,
+               .model_mask = BI_MODEL_THERMAL,
+       },
+[2] =  {
+               .name = NULL
+       }
 };
 
-static struct model_i2c model_i2c_list[] = {
-       { "dlink",      {       { "strtc",      0x68, 0 } } },
-       { "iomega",     {       { "dsrtc",      0x68, 0 } } },
-       { "kurobox",    {       { "rs5c372rtc", 0x32, 0 } } },
-       { "kurot4",     {       { "rs5c372rtc", 0x32, 0 } } },
-       { "nhnas",      {       { "pcf8563rtc", 0x51, 0 } } },
-       { "qnap",       {       { "s390rtc",    0x30, 0 } } },
-       { "synology",   {       { "rs5c372rtc", 0x32, 0 },
-                               { "lmtemp",     0x48, BI_MODEL_THERMAL } } },
+static const struct device_compatible_entry sandpoint_i2c_compat[] = {
+       { .compat = "dlink",            .data = &dlink_i2cdevs },
+       { .compat = "iomega",           .data = &iomega_i2cdevs },
+       { .compat = "kurobox",          .data = &kurobox_i2cdevs },
+       /* kurot4 has same i2c devices as kurobox */
+       { .compat = "kurot4",           .data = &kurobox_i2cdevs },
+       { .compat = "nhnas",            .data = &nhnas_i2cdevs },
+       { .compat = "qnap",             .data = &qnap_i2cdevs },
+       { .compat = "synology",         .data = &synology_i2cdevs },
+       DEVICE_COMPAT_EOL
 };
 
-static void add_i2c_child_devices(device_t, const char *);
+/*
+ * We provide a device handle implementation for i2c device enumeration.
+ */
+static int
+sandpoint_i2c_enumerate_devices(device_t dev, devhandle_t call_handle, void *v)
+{
+       struct i2c_enumerate_devices_args *args = v;
+       const struct device_compatible_entry *dce;
+       const struct sandpoint_i2cdev *i2cdev;
+       prop_dictionary_t props;
+       bool cbrv;
+
+       KASSERT(bi_pfam != NULL);
+
+       const char *fam_name = bi_pfam->name;
+       dce = device_compatible_lookup(&fam_name, 1, sandpoint_i2c_compat);
+       if (dce == NULL) {
+               /* no i2c devices for this model. */
+               return 0;
+       }
+       i2cdev = dce->data;
+       KASSERT(i2cdev != NULL);
+
+       for (; i2cdev->name != NULL; i2cdev++) {
+               if (i2cdev->model_mask != 0) {
+                       KASSERT(bi_model != NULL);
+                       if ((i2cdev->model_mask & bi_model->flags) == 0) {
+                               /* skip this device. */
+                               continue;
+                       }
+               }
+
+               props = prop_dictionary_create();
+
+               args->ia->ia_addr = i2cdev->addr;
+               args->ia->ia_name = i2cdev->name;
+               args->ia->ia_clist = i2cdev->compat;
+               args->ia->ia_clist_size = strlen(i2cdev->compat) + 1;
+               args->ia->ia_prop = props;
+               /* no devhandle for child devices. */
+               devhandle_invalidate(&args->ia->ia_devhandle);
+               args->ia->ia_cookie = 0;                        /* XXX */
+               args->ia->ia_cookietype = I2C_COOKIE_NONE;      /* XXX */
+
+               cbrv = args->callback(dev, args);
+
+               prop_object_release(props);
+
+               if (!cbrv) {
+                       break;
+               }
+       }
+
+       return 0;
+}
+
+static device_call_t
+sandpoint_i2c_devhandle_lookup_device_call(devhandle_t handle, const char *name,
+    devhandle_t *call_handlep)
+{
+       if (strcmp(name, "i2c-enumerate-devices") == 0) {
+               return sandpoint_i2c_enumerate_devices;
+       }
+       return NULL;
+}
+
+static const struct devhandle_impl sandpoint_i2c_devhandle_impl = {
+       .type = DEVHANDLE_TYPE_PRIVATE,
+       .lookup_device_call = sandpoint_i2c_devhandle_lookup_device_call,
+};
 
 /*
  * Determine i/o configuration for a machine.
@@ -170,45 +307,10 @@
                booted_partition = bi_rdev->cookie & 0xff;
        }
        else if (device_is_a(dev, "ociic") && bi_pfam != NULL) {
-               add_i2c_child_devices(dev, bi_pfam->name);
+               /* For i2c device enumeration. */
+               devhandle_t devhandle = {
+                       .impl = &sandpoint_i2c_devhandle_impl,
+               };
+               device_set_handle(dev, devhandle);
        }
 }
-
-static void
-add_i2c_child_devices(device_t self, const char *family)
-{
-       struct i2c_dev *model_i2c_devs;
-       prop_dictionary_t pd;
-       prop_array_t pa;
-       int i;
-
-       for (i = 0;
-           i < (int)(sizeof(model_i2c_list) / sizeof(model_i2c_list[0]));
-           i++) {
-               if (strcmp(family, model_i2c_list[i].family) == 0) {
-                       model_i2c_devs = model_i2c_list[i].i2c_devs;
-                       goto found;
-               }
-       }
-       return;
-
- found:
-       /* make an i2c-child-devices property list with for direct config. */
-       pa = prop_array_create();
-
-       for (i = 0; i < MAXI2CDEVS && model_i2c_devs[i].name != NULL; i++) {
-               if (model_i2c_devs[i].model_mask != 0 &&
-                   !(bi_model->flags & model_i2c_devs[i].model_mask))
-                       continue;
-               pd = prop_dictionary_create();
-               prop_dictionary_set_string_nocopy(pd, "name",
-                   model_i2c_devs[i].name);
-               prop_dictionary_set_uint32(pd, "addr",
-                   model_i2c_devs[i].addr);
-               prop_array_add(pa, pd);
-               prop_object_release(pd);
-       }
-
-       prop_dictionary_set(device_properties(self), "i2c-child-devices", pa);
-       prop_object_release(pa);
-}



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