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Diffstat (limited to 'arch/arm/mach-omap2/mux.c')
-rw-r--r--arch/arm/mach-omap2/mux.c70
1 files changed, 37 insertions, 33 deletions
diff --git a/arch/arm/mach-omap2/mux.c b/arch/arm/mach-omap2/mux.c
index fb8bc9fa43b..f62f7537d89 100644
--- a/arch/arm/mach-omap2/mux.c
+++ b/arch/arm/mach-omap2/mux.c
@@ -35,13 +35,14 @@
#include <linux/irq.h>
#include <linux/interrupt.h>
-#include <asm/system.h>
-#include <plat/omap_hwmod.h>
+#include "omap_hwmod.h"
+#include "soc.h"
#include "control.h"
#include "mux.h"
#include "prm.h"
+#include "common.h"
#define OMAP_MUX_BASE_OFFSET 0x30 /* Offset from CTRL_BASE */
#define OMAP_MUX_BASE_SZ 0x5ca
@@ -69,18 +70,18 @@ struct omap_mux_partition *omap_mux_get(const char *name)
u16 omap_mux_read(struct omap_mux_partition *partition, u16 reg)
{
if (partition->flags & OMAP_MUX_REG_8BIT)
- return __raw_readb(partition->base + reg);
+ return readb_relaxed(partition->base + reg);
else
- return __raw_readw(partition->base + reg);
+ return readw_relaxed(partition->base + reg);
}
void omap_mux_write(struct omap_mux_partition *partition, u16 val,
u16 reg)
{
if (partition->flags & OMAP_MUX_REG_8BIT)
- __raw_writeb(val, partition->base + reg);
+ writeb_relaxed(val, partition->base + reg);
else
- __raw_writew(val, partition->base + reg);
+ writew_relaxed(val, partition->base + reg);
}
void omap_mux_write_array(struct omap_mux_partition *partition,
@@ -100,8 +101,8 @@ void omap_mux_write_array(struct omap_mux_partition *partition,
static char *omap_mux_options;
-static int _omap_mux_init_gpio(struct omap_mux_partition *partition,
- int gpio, int val)
+static int __init _omap_mux_init_gpio(struct omap_mux_partition *partition,
+ int gpio, int val)
{
struct omap_mux_entry *e;
struct omap_mux *gpio_mux = NULL;
@@ -134,10 +135,7 @@ static int _omap_mux_init_gpio(struct omap_mux_partition *partition,
old_mode = omap_mux_read(partition, gpio_mux->reg_offset);
mux_mode = val & ~(OMAP_MUX_NR_MODES - 1);
- if (partition->flags & OMAP_MUX_GPIO_IN_MODE3)
- mux_mode |= OMAP_MUX_MODE3;
- else
- mux_mode |= OMAP_MUX_MODE4;
+ mux_mode |= partition->gpio;
pr_debug("%s: Setting signal %s.gpio%i 0x%04x -> 0x%04x\n", __func__,
gpio_mux->muxnames[0], gpio, old_mode, mux_mode);
omap_mux_write(partition, mux_mode, gpio_mux->reg_offset);
@@ -145,7 +143,7 @@ static int _omap_mux_init_gpio(struct omap_mux_partition *partition,
return 0;
}
-int omap_mux_init_gpio(int gpio, int val)
+int __init omap_mux_init_gpio(int gpio, int val)
{
struct omap_mux_partition *partition;
int ret;
@@ -159,9 +157,9 @@ int omap_mux_init_gpio(int gpio, int val)
return -ENODEV;
}
-static int _omap_mux_get_by_name(struct omap_mux_partition *partition,
- const char *muxname,
- struct omap_mux **found_mux)
+static int __init _omap_mux_get_by_name(struct omap_mux_partition *partition,
+ const char *muxname,
+ struct omap_mux **found_mux)
{
struct omap_mux *mux = NULL;
struct omap_mux_entry *e;
@@ -185,8 +183,10 @@ static int _omap_mux_get_by_name(struct omap_mux_partition *partition,
m0_entry = mux->muxnames[0];
/* First check for full name in mode0.muxmode format */
- if (mode0_len && strncmp(muxname, m0_entry, mode0_len))
- continue;
+ if (mode0_len)
+ if (strncmp(muxname, m0_entry, mode0_len) ||
+ (strlen(m0_entry) != mode0_len))
+ continue;
/* Then check for muxmode only */
for (i = 0; i < OMAP_MUX_NR_MODES; i++) {
@@ -213,13 +213,10 @@ static int _omap_mux_get_by_name(struct omap_mux_partition *partition,
return -EINVAL;
}
- pr_err("%s: Could not find signal %s\n", __func__, muxname);
-
return -ENODEV;
}
-static int __init
-omap_mux_get_by_name(const char *muxname,
+int __init omap_mux_get_by_name(const char *muxname,
struct omap_mux_partition **found_partition,
struct omap_mux **found_mux)
{
@@ -237,10 +234,12 @@ omap_mux_get_by_name(const char *muxname,
return mux_mode;
}
+ pr_err("%s: Could not find signal %s\n", __func__, muxname);
+
return -ENODEV;
}
-int omap_mux_init_signal(const char *muxname, int val)
+int __init omap_mux_init_signal(const char *muxname, int val)
{
struct omap_mux_partition *partition = NULL;
struct omap_mux *mux = NULL;
@@ -248,7 +247,7 @@ int omap_mux_init_signal(const char *muxname, int val)
int mux_mode;
mux_mode = omap_mux_get_by_name(muxname, &partition, &mux);
- if (mux_mode < 0)
+ if (mux_mode < 0 || !mux)
return mux_mode;
old_mode = omap_mux_read(partition, mux->reg_offset);
@@ -487,7 +486,7 @@ void omap_hwmod_mux(struct omap_hwmod_mux_info *hmux, u8 state)
default:
/* Nothing to be done */
break;
- };
+ }
if (val >= 0) {
omap_mux_write(pad->partition, val,
@@ -742,8 +741,9 @@ static void __init omap_mux_dbg_create_entry(
list_for_each_entry(e, &partition->muxmodes, node) {
struct omap_mux *m = &e->mux;
- (void)debugfs_create_file(m->muxnames[0], S_IWUSR, mux_dbg_dir,
- m, &omap_mux_dbg_signal_fops);
+ (void)debugfs_create_file(m->muxnames[0], S_IWUSR | S_IRUGO,
+ mux_dbg_dir, m,
+ &omap_mux_dbg_signal_fops);
}
}
@@ -789,7 +789,7 @@ static void __init omap_mux_free_names(struct omap_mux *m)
}
/* Free all data except for GPIO pins unless CONFIG_DEBUG_FS is set */
-static int __init omap_mux_late_init(void)
+int __init omap_mux_late_init(void)
{
struct omap_mux_partition *partition;
int ret;
@@ -800,7 +800,7 @@ static int __init omap_mux_late_init(void)
struct omap_mux *m = &e->mux;
u16 mode = omap_mux_read(partition, m->reg_offset);
- if (OMAP_MODE_GPIO(mode))
+ if (OMAP_MODE_GPIO(partition, mode))
continue;
#ifndef CONFIG_DEBUG_FS
@@ -813,6 +813,12 @@ static int __init omap_mux_late_init(void)
}
}
+ omap_mux_dbg_init();
+
+ /* see pinctrl-single-omap for the wake-up interrupt handling */
+ if (of_have_populated_dt())
+ return 0;
+
ret = request_irq(omap_prcm_event_to_irq("io"),
omap_hwmod_mux_handle_irq, IRQF_SHARED | IRQF_NO_SUSPEND,
"hwmod_io", omap_mux_late_init);
@@ -820,11 +826,8 @@ static int __init omap_mux_late_init(void)
if (ret)
pr_warning("mux: Failed to setup hwmod io irq %d\n", ret);
- omap_mux_dbg_init();
-
return 0;
}
-late_initcall(omap_mux_late_init);
static void __init omap_mux_package_fixup(struct omap_mux *p,
struct omap_mux *superset)
@@ -1066,7 +1069,7 @@ static void __init omap_mux_init_list(struct omap_mux_partition *partition,
}
#else
/* Skip pins that are not muxed as GPIO by bootloader */
- if (!OMAP_MODE_GPIO(omap_mux_read(partition,
+ if (!OMAP_MODE_GPIO(partition, omap_mux_read(partition,
superset->reg_offset))) {
superset++;
continue;
@@ -1133,6 +1136,7 @@ int __init omap_mux_init(const char *name, u32 flags,
partition->name = name;
partition->flags = flags;
+ partition->gpio = flags & OMAP_MUX_MODE7;
partition->size = mux_size;
partition->phys = mux_pbase;
partition->base = ioremap(mux_pbase, mux_size);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 23:24:58 +0000