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Merge branch 'devicetree/next-console' into devicetree/next

hifive-unleashed-5.1
Grant Likely 2014-08-11 14:03:08 +01:00
parent 32147e9a8e ccdb8ed3b3
commit b775e642bf
17 changed files with 63 additions and 118 deletions
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4
arch/arm/boot/dts/versatile-ab.dts
View File

@ -15,6 +15,10 @@
i2c0 = &i2c0;
};
chosen {
stdout-path = &uart0;
};
memory {
reg = <0x0 0x08000000>;
};

20
arch/powerpc/platforms/powermac/feature.c
View File

@ -2805,25 +2805,20 @@ set_initial_features(void)
/* Enable GMAC for now for PCI probing. It will be disabled
* later on after PCI probe
*/
np = of_find_node_by_name(NULL, "ethernet");
while(np) {
for_each_node_by_name(np, "ethernet")
if (of_device_is_compatible(np, "K2-GMAC"))
g5_gmac_enable(np, 0, 1);
np = of_find_node_by_name(np, "ethernet");
}
/* Enable FW before PCI probe. Will be disabled later on
* Note: We should have a batter way to check that we are
* dealing with uninorth internal cell and not a PCI cell
* on the external PCI. The code below works though.
*/
np = of_find_node_by_name(NULL, "firewire");
while(np) {
for_each_node_by_name(np, "firewire") {
if (of_device_is_compatible(np, "pci106b,5811")) {
macio_chips[0].flags |= MACIO_FLAG_FW_SUPPORTED;
g5_fw_enable(np, 0, 1);
}
np = of_find_node_by_name(np, "firewire");
}
}
#else /* CONFIG_POWER4 */
@ -2834,13 +2829,11 @@ set_initial_features(void)
/* Enable GMAC for now for PCI probing. It will be disabled
* later on after PCI probe
*/
np = of_find_node_by_name(NULL, "ethernet");
while(np) {
for_each_node_by_name(np, "ethernet") {
if (np->parent
&& of_device_is_compatible(np->parent, "uni-north")
&& of_device_is_compatible(np, "gmac"))
core99_gmac_enable(np, 0, 1);
np = of_find_node_by_name(np, "ethernet");
}
/* Enable FW before PCI probe. Will be disabled later on
@ -2848,8 +2841,7 @@ set_initial_features(void)
* dealing with uninorth internal cell and not a PCI cell
* on the external PCI. The code below works though.
*/
np = of_find_node_by_name(NULL, "firewire");
while(np) {
for_each_node_by_name(np, "firewire") {
if (np->parent
&& of_device_is_compatible(np->parent, "uni-north")
&& (of_device_is_compatible(np, "pci106b,18") ||
@ -2858,18 +2850,16 @@ set_initial_features(void)
macio_chips[0].flags |= MACIO_FLAG_FW_SUPPORTED;
core99_firewire_enable(np, 0, 1);
}
np = of_find_node_by_name(np, "firewire");
}
/* Enable ATA-100 before PCI probe. */
np = of_find_node_by_name(NULL, "ata-6");
while(np) {
for_each_node_by_name(np, "ata-6") {
if (np->parent
&& of_device_is_compatible(np->parent, "uni-north")
&& of_device_is_compatible(np, "kauai-ata")) {
core99_ata100_enable(np, 1);
}
np = of_find_node_by_name(np, "ata-6");
}
/* Switch airport off */

2
arch/powerpc/platforms/powermac/pci.c
View File

@ -698,7 +698,7 @@ static void __init fixup_nec_usb2(void)
{
struct device_node *nec;
for (nec = NULL; (nec = of_find_node_by_name(nec, "usb")) != NULL;) {
for_each_node_by_name(nec, "usb") {
struct pci_controller *hose;
u32 data;
const u32 *prop;

2
arch/powerpc/platforms/powermac/smp.c
View File

@ -577,7 +577,7 @@ static void __init smp_core99_setup_i2c_hwsync(int ncpus)
int ok;
/* Look for the clock chip */
while ((cc = of_find_node_by_name(cc, "i2c-hwclock")) != NULL) {
for_each_node_by_name(cc, "i2c-hwclock") {
p = of_get_parent(cc);
ok = p && of_device_is_compatible(p, "uni-n-i2c");
of_node_put(p);

2
arch/powerpc/platforms/powermac/udbg_adb.c
View File

@ -191,7 +191,7 @@ int __init udbg_adb_init(int force_btext)
* of type "adb". If not, we return a failure, but we keep the
* bext output set for now
*/
for (np = NULL; (np = of_find_node_by_name(np, "keyboard")) != NULL;) {
for_each_node_by_name(np, "keyboard") {
struct device_node *parent = of_get_parent(np);
int found = (parent && strcmp(parent->type, "adb") == 0);
of_node_put(parent);

3
arch/powerpc/platforms/pseries/setup.c
View File

@ -232,8 +232,7 @@ static void __init pseries_discover_pic(void)
struct device_node *np;
const char *typep;
for (np = NULL; (np = of_find_node_by_name(np,
"interrupt-controller"));) {
for_each_node_by_name(np, "interrupt-controller") {
typep = of_get_property(np, "compatible", NULL);
if (strstr(typep, "open-pic")) {
pSeries_mpic_node = of_node_get(np);

3
drivers/cpufreq/pmac64-cpufreq.c
View File

@ -499,8 +499,7 @@ static int __init g5_pm72_cpufreq_init(struct device_node *cpunode)
}
/* Lookup the i2c hwclock */
for (hwclock = NULL;
(hwclock = of_find_node_by_name(hwclock, "i2c-hwclock")) != NULL;){
for_each_node_by_name(hwclock, "i2c-hwclock") {
const char *loc = of_get_property(hwclock,
"hwctrl-location", NULL);
if (loc == NULL)

3
drivers/edac/cell_edac.c
View File

@ -134,8 +134,7 @@ static void cell_edac_init_csrows(struct mem_ctl_info *mci)
int j;
u32 nr_pages;
for (np = NULL;
(np = of_find_node_by_name(np, "memory")) != NULL;) {
for_each_node_by_name(np, "memory") {
struct resource r;
/* We "know" that the Cell firmware only creates one entry

26
drivers/of/base.c
View File

@ -17,6 +17,7 @@
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <linux/console.h>
#include <linux/ctype.h>
#include <linux/cpu.h>
#include <linux/module.h>
@ -35,7 +36,7 @@ struct device_node *of_allnodes;
EXPORT_SYMBOL(of_allnodes);
struct device_node *of_chosen;
struct device_node *of_aliases;
static struct device_node *of_stdout;
struct device_node *of_stdout;
static struct kset *of_kset;
@ -2062,9 +2063,12 @@ void of_alias_scan(void * (*dt_alloc)(u64 size, u64 align))
of_chosen = of_find_node_by_path("/chosen@0");
if (of_chosen) {
/* linux,stdout-path and /aliases/stdout are for legacy compatibility */
const char *name = of_get_property(of_chosen, "stdout-path", NULL);
if (!name)
name = of_get_property(of_chosen, "linux,stdout-path", NULL);
if (IS_ENABLED(CONFIG_PPC) && !name)
name = of_get_property(of_aliases, "stdout", NULL);
if (name)
of_stdout = of_find_node_by_path(name);
}
@ -2180,20 +2184,22 @@ const char *of_prop_next_string(struct property *prop, const char *cur)
EXPORT_SYMBOL_GPL(of_prop_next_string);
/**
* of_device_is_stdout_path - check if a device node matches the
* linux,stdout-path property
* of_console_check() - Test and setup console for DT setup
* @dn - Pointer to device node
* @name - Name to use for preferred console without index. ex. "ttyS"
* @index - Index to use for preferred console.
*
* Check if this device node matches the linux,stdout-path property
* in the chosen node. return true if yes, false otherwise.
* Check if the given device node matches the stdout-path property in the
* /chosen node. If it does then register it as the preferred console and return
* TRUE. Otherwise return FALSE.
*/
int of_device_is_stdout_path(struct device_node *dn)
bool of_console_check(struct device_node *dn, char *name, int index)
{
if (!of_stdout)
if (!dn || dn != of_stdout || console_set_on_cmdline)
return false;
return of_stdout == dn;
return add_preferred_console(name, index, NULL);
}
EXPORT_SYMBOL_GPL(of_device_is_stdout_path);
EXPORT_SYMBOL_GPL(of_console_check);
/**
* of_find_next_cache_node - Find a node's subsidiary cache

4
drivers/pci/hotplug/rpaphp_core.c
View File

@ -375,11 +375,11 @@ static void __exit cleanup_slots(void)
static int __init rpaphp_init(void)
{
struct device_node *dn = NULL;
struct device_node *dn;
info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
while ((dn = of_find_node_by_name(dn, "pci")))
for_each_node_by_name(dn, "pci")
rpaphp_add_slot(dn);
return 0;

43
drivers/tty/ehv_bytechan.c
View File

@ -108,55 +108,23 @@ static void disable_tx_interrupt(struct ehv_bc_data *bc)
*
* The byte channel to be used for the console is specified via a "stdout"
* property in the /chosen node.
*
* For compatible with legacy device trees, we also look for a "stdout" alias.
*/
static int find_console_handle(void)
{
struct device_node *np, *np2;
struct device_node *np = of_stdout;
const char *sprop = NULL;
const uint32_t *iprop;
np = of_find_node_by_path("/chosen");
if (np)
sprop = of_get_property(np, "stdout-path", NULL);
if (!np || !sprop) {
of_node_put(np);
np = of_find_node_by_name(NULL, "aliases");
if (np)
sprop = of_get_property(np, "stdout", NULL);
}
if (!sprop) {
of_node_put(np);
return 0;
}
/* We don't care what the aliased node is actually called. We only
* care if it's compatible with "epapr,hv-byte-channel", because that
* indicates that it's a byte channel node. We use a temporary
* variable, 'np2', because we can't release 'np' until we're done with
* 'sprop'.
* indicates that it's a byte channel node.
*/
np2 = of_find_node_by_path(sprop);
of_node_put(np);
np = np2;
if (!np) {
pr_warning("ehv-bc: stdout node '%s' does not exist\n", sprop);
if (!np || !of_device_is_compatible(np, "epapr,hv-byte-channel"))
return 0;
}
/* Is it a byte channel? */
if (!of_device_is_compatible(np, "epapr,hv-byte-channel")) {
of_node_put(np);
return 0;
}
stdout_irq = irq_of_parse_and_map(np, 0);
if (stdout_irq == NO_IRQ) {
pr_err("ehv-bc: no 'interrupts' property in %s node\n", sprop);
of_node_put(np);
pr_err("ehv-bc: no 'interrupts' property in %s node\n", np->full_name);
return 0;
}
@ -167,12 +135,9 @@ static int find_console_handle(void)
if (!iprop) {
pr_err("ehv-bc: no 'hv-handle' property in %s node\n",
np->name);
of_node_put(np);
return 0;
}
stdout_bc = be32_to_cpu(*iprop);
of_node_put(np);
return 1;
}

15
drivers/tty/hvc/hvc_opal.c
View File

@ -342,22 +342,13 @@ static void udbg_init_opal_common(void)
void __init hvc_opal_init_early(void)
{
struct device_node *stdout_node = NULL;
struct device_node *stdout_node = of_node_get(of_stdout);
const __be32 *termno;
const char *name = NULL;
const struct hv_ops *ops;
u32 index;
/* find the boot console from /chosen/stdout */
if (of_chosen)
name = of_get_property(of_chosen, "linux,stdout-path", NULL);
if (name) {
stdout_node = of_find_node_by_path(name);
if (!stdout_node) {
pr_err("hvc_opal: Failed to locate default console!\n");
return;
}
} else {
/* If the console wasn't in /chosen, try /ibm,opal */
if (!stdout_node) {
struct device_node *opal, *np;
/* Current OPAL takeover doesn't provide the stdout

29
drivers/tty/hvc/hvc_vio.c
View File

@ -404,42 +404,35 @@ module_exit(hvc_vio_exit);
void __init hvc_vio_init_early(void)
{
struct device_node *stdout_node;
const __be32 *termno;
const char *name;
const struct hv_ops *ops;
/* find the boot console from /chosen/stdout */
if (!of_chosen)
if (!of_stdout)
return;
name = of_get_property(of_chosen, "linux,stdout-path", NULL);
if (name == NULL)
return;
stdout_node = of_find_node_by_path(name);
if (!stdout_node)
return;
name = of_get_property(stdout_node, "name", NULL);
name = of_get_property(of_stdout, "name", NULL);
if (!name) {
printk(KERN_WARNING "stdout node missing 'name' property!\n");
goto out;
return;
}
/* Check if it's a virtual terminal */
if (strncmp(name, "vty", 3) != 0)
goto out;
termno = of_get_property(stdout_node, "reg", NULL);
return;
termno = of_get_property(of_stdout, "reg", NULL);
if (termno == NULL)
goto out;
return;
hvterm_priv0.termno = of_read_number(termno, 1);
spin_lock_init(&hvterm_priv0.buf_lock);
hvterm_privs[0] = &hvterm_priv0;
/* Check the protocol */
if (of_device_is_compatible(stdout_node, "hvterm1")) {
if (of_device_is_compatible(of_stdout, "hvterm1")) {
hvterm_priv0.proto = HV_PROTOCOL_RAW;
ops = &hvterm_raw_ops;
}
else if (of_device_is_compatible(stdout_node, "hvterm-protocol")) {
else if (of_device_is_compatible(of_stdout, "hvterm-protocol")) {
hvterm_priv0.proto = HV_PROTOCOL_HVSI;
ops = &hvterm_hvsi_ops;
hvsilib_init(&hvterm_priv0.hvsi, hvc_get_chars, hvc_put_chars,
@ -447,7 +440,7 @@ void __init hvc_vio_init_early(void)
/* HVSI, perform the handshake now */
hvsilib_establish(&hvterm_priv0.hvsi);
} else
goto out;
return;
udbg_putc = udbg_hvc_putc;
udbg_getc = udbg_hvc_getc;
udbg_getc_poll = udbg_hvc_getc_poll;
@ -456,14 +449,12 @@ void __init hvc_vio_init_early(void)
* backend for HVSI, only do udbg
*/
if (hvterm_priv0.proto == HV_PROTOCOL_HVSI)
goto out;
return;
#endif
/* Check whether the user has requested a different console. */
if (!strstr(cmd_line, "console="))
add_preferred_console("hvc", 0, NULL);
hvc_instantiate(0, 0, ops);
out:
of_node_put(stdout_node);
}
/* call this from early_init() for a working debug console on

9
drivers/tty/serial/pmac_zilog.c
View File

@ -1650,8 +1650,7 @@ static int __init pmz_probe(void)
/*
* Find all escc chips in the system
*/
node_p = of_find_node_by_name(NULL, "escc");
while (node_p) {
for_each_node_by_name(node_p, "escc") {
/*
* First get channel A/B node pointers
*
@ -1669,7 +1668,7 @@ static int __init pmz_probe(void)
of_node_put(node_b);
printk(KERN_ERR "pmac_zilog: missing node %c for escc %s\n",
(!node_a) ? 'a' : 'b', node_p->full_name);
goto next;
continue;
}
/*
@ -1696,11 +1695,9 @@ static int __init pmz_probe(void)
of_node_put(node_b);
memset(&pmz_ports[count], 0, sizeof(struct uart_pmac_port));
memset(&pmz_ports[count+1], 0, sizeof(struct uart_pmac_port));
goto next;
continue;
}
count += 2;
next:
node_p = of_find_node_by_name(node_p, "escc");
}
pmz_ports_count = count;

3
drivers/tty/serial/serial_core.c
View File

@ -26,6 +26,7 @@
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/console.h>
#include <linux/of.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/device.h>
@ -2615,6 +2616,8 @@ int uart_add_one_port(struct uart_driver *drv, struct uart_port *uport)
spin_lock_init(&uport->lock);
lockdep_set_class(&uport->lock, &port_lock_key);
}
if (uport->cons && uport->dev)
of_console_check(uport->dev->of_node, uport->cons->name, uport->line);
uart_configure_port(drv, state, uport);

7
include/linux/of.h
View File

@ -113,6 +113,7 @@ static inline void of_node_put(struct device_node *node) { }
extern struct device_node *of_allnodes;
extern struct device_node *of_chosen;
extern struct device_node *of_aliases;
extern struct device_node *of_stdout;
extern raw_spinlock_t devtree_lock;
static inline bool of_have_populated_dt(void)
@ -352,7 +353,7 @@ const __be32 *of_prop_next_u32(struct property *prop, const __be32 *cur,
*/
const char *of_prop_next_string(struct property *prop, const char *cur);
int of_device_is_stdout_path(struct device_node *dn);
bool of_console_check(struct device_node *dn, char *name, int index);
#else /* CONFIG_OF */
@ -564,9 +565,9 @@ static inline int of_machine_is_compatible(const char *compat)
return 0;
}
static inline int of_device_is_stdout_path(struct device_node *dn)
static inline bool of_console_check(const struct device_node *dn, const char *name, int index)
{
return 0;
return false;
}
static inline const __be32 *of_prop_next_u32(struct property *prop,

6
sound/ppc/pmac.c
View File

@ -992,9 +992,9 @@ static int snd_pmac_detect(struct snd_pmac *chip)
return -ENODEV;
if (!sound) {
sound = of_find_node_by_name(NULL, "sound");
while (sound && sound->parent != chip->node)
sound = of_find_node_by_name(sound, "sound");
for_each_node_by_name(sound, "sound")
if (sound->parent == chip->node)
break;
}
if (! sound) {
of_node_put(chip->node);