The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/arm/ti/ti_sysc.c

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    1 /*-
    2  * Copyright (c) 2019 Emmanuel Vadot <manu@FreeBSD.org>
    3  *
    4  * Copyright (c) 2020 Oskar Holmlund <oskar.holmlund@ohdata.se>
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  *
   15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
   20  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   21  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
   22  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   23  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   25  * SUCH DAMAGE.
   26  *
   27  * $FreeBSD$
   28  */
   29 
   30 #include <sys/cdefs.h>
   31 __FBSDID("$FreeBSD$");
   32 
   33 #include <sys/param.h>
   34 #include <sys/systm.h>
   35 #include <sys/bus.h>
   36 #include <sys/fbio.h>
   37 #include <sys/kernel.h>
   38 #include <sys/module.h>
   39 #include <sys/queue.h>
   40 #include <sys/rman.h>
   41 #include <sys/resource.h>
   42 #include <machine/bus.h>
   43 #include <vm/vm.h>
   44 #include <vm/vm_extern.h>
   45 #include <vm/vm_kern.h>
   46 #include <vm/pmap.h>
   47 
   48 #include <dev/fdt/simplebus.h>
   49 
   50 #include <dev/ofw/ofw_bus.h>
   51 #include <dev/ofw/ofw_bus_subr.h>
   52 
   53 #include <dev/extres/clk/clk.h>
   54 
   55 #include <arm/ti/ti_sysc.h>
   56 #include <arm/ti/clk/clock_common.h>
   57 
   58 #define DEBUG_SYSC      0
   59 
   60 #if DEBUG_SYSC
   61 #define DPRINTF(dev, msg...) device_printf(dev, msg)
   62 #else
   63 #define DPRINTF(dev, msg...)
   64 #endif
   65 
   66 /* Documentation/devicetree/bindings/bus/ti-sysc.txt
   67  *
   68  * Documentation/devicetree/clock/clock-bindings.txt
   69  * Defines phandle + optional pair
   70  * Documentation/devicetree/clock/ti-clkctl.txt
   71  */
   72 
   73 static int ti_sysc_probe(device_t dev);
   74 static int ti_sysc_attach(device_t dev);
   75 static int ti_sysc_detach(device_t dev);
   76 
   77 #define TI_SYSC_DRA7_MCAN       15
   78 #define TI_SYSC_USB_HOST_FS     14
   79 #define TI_SYSC_DRA7_MCASP      13
   80 #define TI_SYSC_MCASP           12
   81 #define TI_SYSC_OMAP_AES        11
   82 #define TI_SYSC_OMAP3_SHAM      10
   83 #define TI_SYSC_OMAP4_SR        9
   84 #define TI_SYSC_OMAP3630_SR     8
   85 #define TI_SYSC_OMAP3430_SR     7
   86 #define TI_SYSC_OMAP4_TIMER     6
   87 #define TI_SYSC_OMAP2_TIMER     5
   88 /* Above needs special workarounds */
   89 #define TI_SYSC_OMAP4_SIMPLE    4
   90 #define TI_SYSC_OMAP4           3
   91 #define TI_SYSC_OMAP2           2
   92 #define TI_SYSC                 1
   93 #define TI_SYSC_END             0
   94 
   95 static struct ofw_compat_data compat_data[] = {
   96         { "ti,sysc-dra7-mcan",          TI_SYSC_DRA7_MCAN },
   97         { "ti,sysc-usb-host-fs",        TI_SYSC_USB_HOST_FS },
   98         { "ti,sysc-dra7-mcasp",         TI_SYSC_DRA7_MCASP },
   99         { "ti,sysc-mcasp",              TI_SYSC_MCASP },
  100         { "ti,sysc-omap-aes",           TI_SYSC_OMAP_AES },
  101         { "ti,sysc-omap3-sham",         TI_SYSC_OMAP3_SHAM },
  102         { "ti,sysc-omap4-sr",           TI_SYSC_OMAP4_SR },
  103         { "ti,sysc-omap3630-sr",        TI_SYSC_OMAP3630_SR },
  104         { "ti,sysc-omap3430-sr",        TI_SYSC_OMAP3430_SR },
  105         { "ti,sysc-omap4-timer",        TI_SYSC_OMAP4_TIMER },
  106         { "ti,sysc-omap2-timer",        TI_SYSC_OMAP2_TIMER },
  107         /* Above needs special workarounds */
  108         { "ti,sysc-omap4-simple",       TI_SYSC_OMAP4_SIMPLE },
  109         { "ti,sysc-omap4",              TI_SYSC_OMAP4 },
  110         { "ti,sysc-omap2",              TI_SYSC_OMAP2 },
  111         { "ti,sysc",                    TI_SYSC },
  112         { NULL,                         TI_SYSC_END }
  113 };
  114 
  115 /* reg-names can be "rev", "sysc" and "syss" */
  116 static const char * reg_names[] = { "rev", "sysc", "syss" };
  117 #define REG_REV         0
  118 #define REG_SYSC        1
  119 #define REG_SYSS        2
  120 #define REG_MAX         3
  121 
  122 /* master idle / slave idle mode defined in 8.1.3.2.1 / 8.1.3.2.2 */
  123 #include <dt-bindings/bus/ti-sysc.h>
  124 #define SYSC_IDLE_MAX           4
  125 
  126 struct sysc_reg {
  127         uint64_t        address;
  128         uint64_t        size;
  129 };
  130 
  131 struct clk_list {
  132         TAILQ_ENTRY(clk_list)   next;
  133         clk_t                   clk;
  134 };
  135 
  136 struct ti_sysc_softc {
  137         struct simplebus_softc  sc;
  138         bool                    attach_done;
  139 
  140         device_t                dev;
  141         int                     device_type;
  142 
  143         struct sysc_reg         reg[REG_MAX];
  144         /* Offset from host base address */
  145         uint64_t                offset_reg[REG_MAX];
  146 
  147         uint32_t                ti_sysc_mask;
  148         int32_t                 ti_sysc_midle[SYSC_IDLE_MAX];
  149         int32_t                 ti_sysc_sidle[SYSC_IDLE_MAX];
  150         uint32_t                ti_sysc_delay_us;
  151         uint32_t                ti_syss_mask;
  152 
  153         int                     num_clocks;
  154         TAILQ_HEAD(, clk_list)  clk_list;
  155 
  156         /* deprecated ti_hwmods */
  157         bool                    ti_no_reset_on_init;
  158         bool                    ti_no_idle_on_init;
  159         bool                    ti_no_idle;
  160 };
  161 
  162 /*
  163  * All sysc seems to have a reg["rev"] register.
  164  * Lets use that for identification of which module the driver are connected to.
  165  */
  166 uint64_t
  167 ti_sysc_get_rev_address(device_t dev) {
  168         struct ti_sysc_softc *sc = device_get_softc(dev);
  169 
  170         return (sc->reg[REG_REV].address);
  171 }
  172 
  173 uint64_t
  174 ti_sysc_get_rev_address_offset_host(device_t dev) {
  175         struct ti_sysc_softc *sc = device_get_softc(dev);
  176 
  177         return (sc->offset_reg[REG_REV]);
  178 }
  179 
  180 uint64_t
  181 ti_sysc_get_sysc_address(device_t dev) {
  182         struct ti_sysc_softc *sc = device_get_softc(dev);
  183 
  184         return (sc->reg[REG_SYSC].address);
  185 }
  186 
  187 uint64_t
  188 ti_sysc_get_sysc_address_offset_host(device_t dev) {
  189         struct ti_sysc_softc *sc = device_get_softc(dev);
  190 
  191         return (sc->offset_reg[REG_SYSC]);
  192 }
  193 
  194 uint64_t
  195 ti_sysc_get_syss_address(device_t dev) {
  196         struct ti_sysc_softc *sc = device_get_softc(dev);
  197 
  198         return (sc->reg[REG_SYSS].address);
  199 }
  200 
  201 uint64_t
  202 ti_sysc_get_syss_address_offset_host(device_t dev) {
  203         struct ti_sysc_softc *sc = device_get_softc(dev);
  204 
  205         return (sc->offset_reg[REG_SYSS]);
  206 }
  207 
  208 /*
  209  * Due no memory region is assigned the sysc driver the children needs to
  210  * handle the practical read/writes to the registers.
  211  * Check if sysc has reset bit.
  212  */
  213 uint32_t
  214 ti_sysc_get_soft_reset_bit(device_t dev) {
  215         struct ti_sysc_softc *sc = device_get_softc(dev);
  216         switch (sc->device_type) {
  217                 case TI_SYSC_OMAP4_TIMER:
  218                 case TI_SYSC_OMAP4_SIMPLE:
  219                 case TI_SYSC_OMAP4:
  220                         if (sc->ti_sysc_mask & SYSC_OMAP4_SOFTRESET) {
  221                                 return (SYSC_OMAP4_SOFTRESET);
  222                         }
  223                         break;
  224 
  225                 case TI_SYSC_OMAP2_TIMER:
  226                 case TI_SYSC_OMAP2:
  227                 case TI_SYSC:
  228                         if (sc->ti_sysc_mask & SYSC_OMAP2_SOFTRESET) {
  229                                 return (SYSC_OMAP2_SOFTRESET);
  230                         }
  231                         break;
  232                 default:
  233                         break;
  234         }
  235 
  236         return (0);
  237 }
  238 
  239 int
  240 ti_sysc_clock_enable(device_t dev) {
  241         struct clk_list *clkp, *clkp_tmp;
  242         struct ti_sysc_softc *sc = device_get_softc(dev);
  243         int err;
  244 
  245         TAILQ_FOREACH_SAFE(clkp, &sc->clk_list, next, clkp_tmp) {
  246                 err = clk_enable(clkp->clk);
  247 
  248                 if (err) {
  249                         DPRINTF(sc->dev, "clk_enable %s failed %d\n",
  250                                 clk_get_name(clkp->clk), err);
  251                         break;
  252                 }
  253         }
  254         return (err);
  255 }
  256 
  257 int
  258 ti_sysc_clock_disable(device_t dev) {
  259         struct clk_list *clkp, *clkp_tmp;
  260         struct ti_sysc_softc *sc = device_get_softc(dev);
  261         int err = 0;
  262 
  263         TAILQ_FOREACH_SAFE(clkp, &sc->clk_list, next, clkp_tmp) {
  264                 err = clk_disable(clkp->clk);
  265 
  266                 if (err) {
  267                         DPRINTF(sc->dev, "clk_enable %s failed %d\n",
  268                                 clk_get_name(clkp->clk), err);
  269                         break;
  270                 }
  271         }
  272         return (err);
  273 }
  274 
  275 static int
  276 parse_regfields(struct ti_sysc_softc *sc) {
  277         phandle_t node;
  278         uint32_t parent_address_cells;
  279         uint32_t parent_size_cells;
  280         cell_t *reg;
  281         ssize_t nreg;
  282         int err, k, reg_i, prop_idx;
  283         uint32_t idx;
  284 
  285         node = ofw_bus_get_node(sc->dev);
  286 
  287         /* Get parents address and size properties */
  288         err = OF_searchencprop(OF_parent(node), "#address-cells",
  289                 &parent_address_cells, sizeof(parent_address_cells));
  290         if (err == -1)
  291                 return (ENXIO);
  292         if (!(parent_address_cells == 1 || parent_address_cells == 2)) {
  293                 DPRINTF(sc->dev, "Expect parent #address-cells=[1||2]\n");
  294                 return (ENXIO);
  295         }
  296 
  297         err = OF_searchencprop(OF_parent(node), "#size-cells",
  298                 &parent_size_cells, sizeof(parent_size_cells));
  299         if (err == -1)
  300                 return (ENXIO);
  301 
  302         if (!(parent_size_cells == 1 || parent_size_cells == 2)) {
  303                 DPRINTF(sc->dev, "Expect parent #size-cells = [1||2]\n");
  304                 return (ENXIO);
  305         }
  306 
  307         /* Grab the content of reg properties */
  308         nreg = OF_getproplen(node, "reg");
  309         reg = malloc(nreg, M_DEVBUF, M_WAITOK);
  310         OF_getencprop(node, "reg", reg, nreg);
  311 
  312         /* Make sure address & size are 0 */
  313         for (idx = 0; idx < REG_MAX; idx++) {
  314                 sc->reg[idx].address = 0;
  315                 sc->reg[idx].size = 0;
  316         }
  317 
  318         /* Loop through reg-names and figure out which reg-name corresponds to
  319          * index populate the values into the reg array.
  320         */
  321         for (idx = 0, reg_i = 0; idx < REG_MAX && reg_i < nreg; idx++) {
  322                 err = ofw_bus_find_string_index(node, "reg-names",
  323                     reg_names[idx], &prop_idx);
  324                 if (err != 0)
  325                         continue;
  326 
  327                 for (k = 0; k < parent_address_cells; k++) {
  328                         sc->reg[prop_idx].address <<= 32;
  329                         sc->reg[prop_idx].address |= reg[reg_i++];
  330                 }
  331 
  332                 for (k = 0; k < parent_size_cells; k++) {
  333                         sc->reg[prop_idx].size <<= 32;
  334                         sc->reg[prop_idx].size |= reg[reg_i++];
  335                 }
  336 
  337                 if (sc->sc.nranges == 0)
  338                         sc->offset_reg[prop_idx] = sc->reg[prop_idx].address;
  339                 else
  340                         sc->offset_reg[prop_idx] = sc->reg[prop_idx].address -
  341                             sc->sc.ranges[REG_REV].host;
  342 
  343                 DPRINTF(sc->dev, "reg[%s] adress %#jx size %#jx\n",
  344                         reg_names[idx],
  345                         sc->reg[prop_idx].address,
  346                         sc->reg[prop_idx].size);
  347         }
  348         free(reg, M_DEVBUF);
  349         return (0);
  350 }
  351 
  352 static void
  353 parse_idle(struct ti_sysc_softc *sc, const char *name, uint32_t *idle) {
  354         phandle_t node;
  355         cell_t  value[SYSC_IDLE_MAX];
  356         int len, no, i;
  357 
  358         node = ofw_bus_get_node(sc->dev);
  359 
  360         if (!OF_hasprop(node, name)) {
  361                 return;
  362         }
  363 
  364         len = OF_getproplen(node, name);
  365         no = len / sizeof(cell_t);
  366         if (no >= SYSC_IDLE_MAX) {
  367                 DPRINTF(sc->dev, "Limit %s\n", name);
  368                 no = SYSC_IDLE_MAX-1;
  369                 len = no * sizeof(cell_t);
  370         }
  371 
  372         OF_getencprop(node, name, value, len);
  373         for (i = 0; i < no; i++) {
  374                 idle[i] = value[i];
  375 #if DEBUG_SYSC
  376                 DPRINTF(sc->dev, "%s[%d] = %d ",
  377                         name, i, value[i]);
  378                 switch(value[i]) {
  379                 case SYSC_IDLE_FORCE:
  380                         DPRINTF(sc->dev, "SYSC_IDLE_FORCE\n");
  381                         break;
  382                 case SYSC_IDLE_NO:
  383                         DPRINTF(sc->dev, "SYSC_IDLE_NO\n");
  384                         break;
  385                 case SYSC_IDLE_SMART:
  386                         DPRINTF(sc->dev, "SYSC_IDLE_SMART\n");
  387                         break;
  388                 case SYSC_IDLE_SMART_WKUP:
  389                         DPRINTF(sc->dev, "SYSC_IDLE_SMART_WKUP\n");
  390                         break;
  391                 }
  392 #endif
  393         }
  394         for ( ; i < SYSC_IDLE_MAX; i++)
  395                 idle[i] = -1;
  396 }
  397 
  398 static int
  399 ti_sysc_attach_clocks(struct ti_sysc_softc *sc) {
  400         clk_t *clk;
  401         struct clk_list *clkp;
  402         int index, err;
  403         phandle_t cnode;
  404 
  405         clk = malloc(sc->num_clocks*sizeof(clk_t), M_DEVBUF, M_WAITOK | M_ZERO);
  406 
  407         cnode = ofw_bus_get_node(sc->dev);
  408 
  409         /* Check if all clocks can be found */
  410         for (index = 0; index < sc->num_clocks; index++) {
  411                 err = clk_get_by_ofw_index(sc->dev, 0, index, &clk[index]);
  412 
  413                 if (err != 0) {
  414                         free(clk, M_DEVBUF);
  415                         return (1);
  416                 }
  417         }
  418 
  419         /* All clocks are found, add to list */
  420         for (index = 0; index < sc->num_clocks; index++) {
  421                 clkp = malloc(sizeof(*clkp), M_DEVBUF, M_WAITOK | M_ZERO);
  422                 clkp->clk = clk[index];
  423                 TAILQ_INSERT_TAIL(&sc->clk_list, clkp, next);
  424         }
  425 
  426         /* Release the clk array */
  427         free(clk, M_DEVBUF);
  428         return (0);
  429 }
  430 
  431 static int
  432 ti_sysc_simplebus_attach_child(device_t dev) {
  433         device_t cdev;
  434         phandle_t node, child;
  435         struct ti_sysc_softc *sc = device_get_softc(dev);
  436 
  437         node = ofw_bus_get_node(sc->dev);
  438 
  439         for (child = OF_child(node); child > 0; child = OF_peer(child)) {
  440                 cdev = simplebus_add_device(sc->dev, child, 0, NULL, -1, NULL);
  441                 if (cdev != NULL)
  442                         device_probe_and_attach(cdev);
  443         }
  444         return (0);
  445 }
  446 
  447 /* Device interface */
  448 static int
  449 ti_sysc_probe(device_t dev)
  450 {
  451         if (!ofw_bus_status_okay(dev))
  452                 return (ENXIO);
  453 
  454         if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
  455                 return (ENXIO);
  456 
  457         device_set_desc(dev, "TI SYSC Interconnect");
  458 
  459         return (BUS_PROBE_DEFAULT);
  460 }
  461 
  462 static int
  463 ti_sysc_attach(device_t dev)
  464 {
  465         struct ti_sysc_softc *sc;
  466         phandle_t node;
  467         int err;
  468         cell_t  value;
  469 
  470         sc = device_get_softc(dev);
  471         sc->dev = dev;
  472         sc->device_type = ofw_bus_search_compatible(dev, compat_data)->ocd_data;
  473 
  474         node = ofw_bus_get_node(sc->dev);
  475         /* ranges - use simplebus */
  476         simplebus_init(sc->dev, node);
  477         if (simplebus_fill_ranges(node, &sc->sc) < 0) {
  478                 DPRINTF(sc->dev, "could not get ranges\n");
  479                 return (ENXIO);
  480         }
  481 
  482         if (sc->sc.nranges == 0) {
  483                 DPRINTF(sc->dev, "nranges == 0\n");
  484                 return (ENXIO);
  485         }
  486 
  487         /* Required field reg & reg-names - assume at least "rev" exists */
  488         err = parse_regfields(sc);
  489         if (err) {
  490                 DPRINTF(sc->dev, "parse_regfields failed %d\n", err);
  491                 return (ENXIO);
  492         }
  493 
  494         /* Optional */
  495         if (OF_hasprop(node, "ti,sysc-mask")) {
  496                 OF_getencprop(node, "ti,sysc-mask", &value, sizeof(cell_t));
  497                 sc->ti_sysc_mask = value;
  498         }
  499         if (OF_hasprop(node, "ti,syss-mask")) {
  500                 OF_getencprop(node, "ti,syss-mask", &value, sizeof(cell_t));
  501                 sc->ti_syss_mask = value;
  502         }
  503         if (OF_hasprop(node, "ti,sysc-delay-us")) {
  504                 OF_getencprop(node, "ti,sysc-delay-us", &value, sizeof(cell_t));
  505                 sc->ti_sysc_delay_us = value;
  506         }
  507 
  508         DPRINTF(sc->dev, "sysc_mask %x syss_mask %x delay_us %x\n",
  509                 sc->ti_sysc_mask, sc->ti_syss_mask, sc->ti_sysc_delay_us);
  510 
  511         parse_idle(sc, "ti,sysc-midle", sc->ti_sysc_midle);
  512         parse_idle(sc, "ti,sysc-sidle", sc->ti_sysc_sidle);
  513 
  514         if (OF_hasprop(node, "ti,no-reset-on-init"))
  515                 sc->ti_no_reset_on_init = true;
  516         else
  517                 sc->ti_no_reset_on_init = false;
  518 
  519         if (OF_hasprop(node, "ti,no-idle-on-init"))
  520                 sc->ti_no_idle_on_init = true;
  521         else
  522                 sc->ti_no_idle_on_init = false;
  523 
  524         if (OF_hasprop(node, "ti,no-idle"))
  525                 sc->ti_no_idle = true;
  526         else
  527                 sc->ti_no_idle = false;
  528 
  529         DPRINTF(sc->dev,
  530                 "no-reset-on-init %d, no-idle-on-init %d, no-idle %d\n",
  531                 sc->ti_no_reset_on_init,
  532                 sc->ti_no_idle_on_init,
  533                 sc->ti_no_idle);
  534 
  535         if (OF_hasprop(node, "clocks")) {
  536                 struct clock_cell_info cell_info;
  537                 read_clock_cells(sc->dev, &cell_info);
  538                 free(cell_info.clock_cells, M_DEVBUF);
  539                 free(cell_info.clock_cells_ncells, M_DEVBUF);
  540 
  541                 sc->num_clocks = cell_info.num_real_clocks;
  542                 TAILQ_INIT(&sc->clk_list);
  543 
  544                 err = ti_sysc_attach_clocks(sc);
  545                 if (err) {
  546                         DPRINTF(sc->dev, "Failed to attach clocks\n");
  547                         return (bus_generic_attach(sc->dev));
  548                 }
  549         }
  550 
  551         err = ti_sysc_simplebus_attach_child(sc->dev);
  552         if (err) {
  553                 DPRINTF(sc->dev, "ti_sysc_simplebus_attach_child %d\n",
  554                     err);
  555                 return (err);
  556         }
  557 
  558         sc->attach_done = true;
  559 
  560         return (bus_generic_attach(sc->dev));
  561 }
  562 
  563 static int
  564 ti_sysc_detach(device_t dev)
  565 {
  566         return (EBUSY);
  567 }
  568 
  569 /* Bus interface */
  570 static void
  571 ti_sysc_new_pass(device_t dev)
  572 {
  573         struct ti_sysc_softc *sc;
  574         int err;
  575         phandle_t node;
  576 
  577         sc = device_get_softc(dev);
  578 
  579         if (sc->attach_done) {
  580                 bus_generic_new_pass(sc->dev);
  581                 return;
  582         }
  583 
  584         node = ofw_bus_get_node(sc->dev);
  585         if (OF_hasprop(node, "clocks")) {
  586                 err = ti_sysc_attach_clocks(sc);
  587                 if (err) {
  588                         DPRINTF(sc->dev, "Failed to attach clocks\n");
  589                         return;
  590                 }
  591         }
  592 
  593         err = ti_sysc_simplebus_attach_child(sc->dev);
  594         if (err) {
  595                 DPRINTF(sc->dev,
  596                     "ti_sysc_simplebus_attach_child failed %d\n", err);
  597                 return;
  598         }
  599         sc->attach_done = true;
  600 
  601         bus_generic_attach(sc->dev);
  602 }
  603 
  604 static device_method_t ti_sysc_methods[] = {
  605         /* Device interface */
  606         DEVMETHOD(device_probe,         ti_sysc_probe),
  607         DEVMETHOD(device_attach,        ti_sysc_attach),
  608         DEVMETHOD(device_detach,        ti_sysc_detach),
  609 
  610         /* Bus interface */
  611         DEVMETHOD(bus_new_pass,         ti_sysc_new_pass),
  612 
  613         DEVMETHOD_END
  614 };
  615 
  616 DEFINE_CLASS_1(ti_sysc, ti_sysc_driver, ti_sysc_methods,
  617         sizeof(struct ti_sysc_softc), simplebus_driver);
  618 
  619 static devclass_t ti_sysc_devclass;
  620 
  621 EARLY_DRIVER_MODULE(ti_sysc, simplebus, ti_sysc_driver,
  622     ti_sysc_devclass, 0, 0, BUS_PASS_BUS + BUS_PASS_ORDER_FIRST);

Cache object: 34c980393195a5daf31358f55aca3819


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