* [PATCH v3 02/12] macintosh/via-pmu: Add missing mmio accessors
2018-06-13 10:38 [PATCH v3 00/12] macintosh: Resolve various PMU driver problems Finn Thain
@ 2018-06-13 10:38 ` Finn Thain
2018-06-13 10:38 ` [PATCH v3 08/12] macintosh/via-pmu68k: Don't load driver on unsupported hardware Finn Thain
` (11 subsequent siblings)
12 siblings, 0 replies; 20+ messages in thread
From: Finn Thain @ 2018-06-13 10:38 UTC (permalink / raw)
To: Benjamin Herrenschmidt
Cc: Michael Schmitz, linuxppc-dev, linux-m68k, linux-kernel
Add missing in_8() accessors to init_pmu() and pmu_sr_intr().
This fixes several sparse warnings:
drivers/macintosh/via-pmu.c:536:29: warning: dereference of noderef expression
drivers/macintosh/via-pmu.c:537:33: warning: dereference of noderef expression
drivers/macintosh/via-pmu.c:1455:17: warning: dereference of noderef expression
drivers/macintosh/via-pmu.c:1456:69: warning: dereference of noderef expression
Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
---
drivers/macintosh/via-pmu.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c
index fd3c5640d586..74065ea410bd 100644
--- a/drivers/macintosh/via-pmu.c
+++ b/drivers/macintosh/via-pmu.c
@@ -532,8 +532,9 @@ init_pmu(void)
int timeout;
struct adb_request req;
- out_8(&via[B], via[B] | TREQ); /* negate TREQ */
- out_8(&via[DIRB], (via[DIRB] | TREQ) & ~TACK); /* TACK in, TREQ out */
+ /* Negate TREQ. Set TACK to input and TREQ to output. */
+ out_8(&via[B], in_8(&via[B]) | TREQ);
+ out_8(&via[DIRB], (in_8(&via[DIRB]) | TREQ) & ~TACK);
pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask);
timeout = 100000;
@@ -1455,8 +1456,8 @@ pmu_sr_intr(void)
struct adb_request *req;
int bite = 0;
- if (via[B] & TREQ) {
- printk(KERN_ERR "PMU: spurious SR intr (%x)\n", via[B]);
+ if (in_8(&via[B]) & TREQ) {
+ printk(KERN_ERR "PMU: spurious SR intr (%x)\n", in_8(&via[B]));
out_8(&via[IFR], SR_INT);
return NULL;
}
--
2.16.4
^ permalink raw reply related [flat|nested] 20+ messages in thread
* [PATCH v3 03/12] macintosh/via-pmu: Don't clear shift register interrupt flag twice
2018-06-13 10:38 [PATCH v3 00/12] macintosh: Resolve various PMU driver problems Finn Thain
2018-06-13 10:38 ` [PATCH v3 02/12] macintosh/via-pmu: Add missing mmio accessors Finn Thain
2018-06-13 10:38 ` [PATCH v3 08/12] macintosh/via-pmu68k: Don't load driver on unsupported hardware Finn Thain
@ 2018-06-13 10:38 ` Finn Thain
2018-06-13 10:38 ` [PATCH v3 05/12] macintosh/via-pmu: Replace via pointer with via1 and via2 pointers Finn Thain
` (9 subsequent siblings)
12 siblings, 0 replies; 20+ messages in thread
From: Finn Thain @ 2018-06-13 10:38 UTC (permalink / raw)
To: Benjamin Herrenschmidt
Cc: Michael Schmitz, linuxppc-dev, linux-m68k, linux-kernel
The shift register interrupt flag gets cleared in via_pmu_interrupt()
and once again in pmu_sr_intr(). Fix this theoretical race condition.
Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
---
drivers/macintosh/via-pmu.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c
index 74065ea410bd..4c1bae5380c2 100644
--- a/drivers/macintosh/via-pmu.c
+++ b/drivers/macintosh/via-pmu.c
@@ -1458,7 +1458,6 @@ pmu_sr_intr(void)
if (in_8(&via[B]) & TREQ) {
printk(KERN_ERR "PMU: spurious SR intr (%x)\n", in_8(&via[B]));
- out_8(&via[IFR], SR_INT);
return NULL;
}
/* The ack may not yet be low when we get the interrupt */
--
2.16.4
^ permalink raw reply related [flat|nested] 20+ messages in thread
* [PATCH v3 07/12] macintosh/via-pmu: Make CONFIG_PPC_PMAC Kconfig deps explicit
2018-06-13 10:38 [PATCH v3 00/12] macintosh: Resolve various PMU driver problems Finn Thain
` (5 preceding siblings ...)
2018-06-13 10:38 ` [PATCH v3 04/12] macintosh/via-pmu: Enhance state machine with new 'uninitialized' state Finn Thain
@ 2018-06-13 10:38 ` Finn Thain
2018-06-13 10:38 ` [PATCH v3 06/12] macintosh/via-pmu: Add support for m68k PowerBooks Finn Thain
` (5 subsequent siblings)
12 siblings, 0 replies; 20+ messages in thread
From: Finn Thain @ 2018-06-13 10:38 UTC (permalink / raw)
To: Benjamin Herrenschmidt
Cc: Michael Schmitz, linuxppc-dev, linux-m68k, linux-kernel
At present, CONFIG_ADB_PMU depends on CONFIG_PPC_PMAC. When this gets
relaxed to CONFIG_PPC_PMAC || CONFIG_MAC, those Kconfig symbols with
implicit deps on PPC_PMAC will need explicit deps. Add them now.
No functional change.
Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
---
drivers/macintosh/Kconfig | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/macintosh/Kconfig b/drivers/macintosh/Kconfig
index 9c6452b38c36..26abae4c899d 100644
--- a/drivers/macintosh/Kconfig
+++ b/drivers/macintosh/Kconfig
@@ -79,7 +79,7 @@ config ADB_PMU
config ADB_PMU_LED
bool "Support for the Power/iBook front LED"
- depends on ADB_PMU
+ depends on PPC_PMAC && ADB_PMU
select NEW_LEDS
select LEDS_CLASS
help
@@ -122,7 +122,7 @@ config PMAC_MEDIABAY
config PMAC_BACKLIGHT
bool "Backlight control for LCD screens"
- depends on ADB_PMU && FB = y && (BROKEN || !PPC64)
+ depends on PPC_PMAC && ADB_PMU && FB = y && (BROKEN || !PPC64)
select FB_BACKLIGHT
help
Say Y here to enable Macintosh specific extensions of the generic
--
2.16.4
^ permalink raw reply related [flat|nested] 20+ messages in thread
* [PATCH v3 08/12] macintosh/via-pmu68k: Don't load driver on unsupported hardware
2018-06-13 10:38 [PATCH v3 00/12] macintosh: Resolve various PMU driver problems Finn Thain
2018-06-13 10:38 ` [PATCH v3 02/12] macintosh/via-pmu: Add missing mmio accessors Finn Thain
@ 2018-06-13 10:38 ` Finn Thain
2018-06-13 10:38 ` [PATCH v3 03/12] macintosh/via-pmu: Don't clear shift register interrupt flag twice Finn Thain
` (10 subsequent siblings)
12 siblings, 0 replies; 20+ messages in thread
From: Finn Thain @ 2018-06-13 10:38 UTC (permalink / raw)
To: Benjamin Herrenschmidt
Cc: Michael Schmitz, linuxppc-dev, linux-m68k, linux-kernel,
Geert Uytterhoeven
Don't load the via-pmu68k driver on early PowerBooks. The M50753 PMU
device found in those models was never supported by this driver.
Attempting to load the driver usually causes a boot hang.
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Michael Schmitz <schmitzmic@gmail.com>
---
arch/m68k/mac/misc.c | 6 ++----
drivers/macintosh/via-pmu68k.c | 4 ----
include/uapi/linux/pmu.h | 2 +-
3 files changed, 3 insertions(+), 9 deletions(-)
diff --git a/arch/m68k/mac/misc.c b/arch/m68k/mac/misc.c
index c68054361615..7ccb799eeb57 100644
--- a/arch/m68k/mac/misc.c
+++ b/arch/m68k/mac/misc.c
@@ -478,8 +478,7 @@ void mac_poweroff(void)
cuda_shutdown();
#endif
#ifdef CONFIG_ADB_PMU68K
- } else if (macintosh_config->adb_type == MAC_ADB_PB1
- || macintosh_config->adb_type == MAC_ADB_PB2) {
+ } else if (macintosh_config->adb_type == MAC_ADB_PB2) {
pmu_shutdown();
#endif
}
@@ -520,8 +519,7 @@ void mac_reset(void)
cuda_restart();
#endif
#ifdef CONFIG_ADB_PMU68K
- } else if (macintosh_config->adb_type == MAC_ADB_PB1
- || macintosh_config->adb_type == MAC_ADB_PB2) {
+ } else if (macintosh_config->adb_type == MAC_ADB_PB2) {
pmu_restart();
#endif
} else if (CPU_IS_030) {
diff --git a/drivers/macintosh/via-pmu68k.c b/drivers/macintosh/via-pmu68k.c
index d545ed45e482..bec8e1837d7d 100644
--- a/drivers/macintosh/via-pmu68k.c
+++ b/drivers/macintosh/via-pmu68k.c
@@ -175,9 +175,6 @@ static s8 pmu_data_len[256][2] = {
int __init find_via_pmu(void)
{
switch (macintosh_config->adb_type) {
- case MAC_ADB_PB1:
- pmu_kind = PMU_68K_V1;
- break;
case MAC_ADB_PB2:
pmu_kind = PMU_68K_V2;
break;
@@ -785,7 +782,6 @@ pmu_enable_backlight(int on)
/* first call: get current backlight value */
if (backlight_level < 0) {
switch(pmu_kind) {
- case PMU_68K_V1:
case PMU_68K_V2:
pmu_request(&req, NULL, 3, PMU_READ_NVRAM, 0x14, 0xe);
while (!req.complete)
diff --git a/include/uapi/linux/pmu.h b/include/uapi/linux/pmu.h
index 89cb1acea93a..e128f609281a 100644
--- a/include/uapi/linux/pmu.h
+++ b/include/uapi/linux/pmu.h
@@ -93,7 +93,7 @@ enum {
PMU_HEATHROW_BASED, /* PowerBook G3 series */
PMU_PADDINGTON_BASED, /* 1999 PowerBook G3 */
PMU_KEYLARGO_BASED, /* Core99 motherboard (PMU99) */
- PMU_68K_V1, /* 68K PMU, version 1 */
+ PMU_68K_V1, /* Unused/deprecated */
PMU_68K_V2, /* 68K PMU, version 2 */
};
--
2.16.4
^ permalink raw reply related [flat|nested] 20+ messages in thread
* [PATCH v3 00/12] macintosh: Resolve various PMU driver problems
@ 2018-06-13 10:38 Finn Thain
2018-06-13 10:38 ` [PATCH v3 02/12] macintosh/via-pmu: Add missing mmio accessors Finn Thain
` (12 more replies)
0 siblings, 13 replies; 20+ messages in thread
From: Finn Thain @ 2018-06-13 10:38 UTC (permalink / raw)
To: Benjamin Herrenschmidt
Cc: Michael Schmitz, linuxppc-dev, linux-m68k, linux-kernel
This series of patches has the following aims.
1) Eliminate duplicated code. Linux presently has two drivers for
the 68HC05-based PMU devices found in Macs: via-pmu and via-pmu68k.
There's no value in having separate PMU drivers for each architecture.
2) Avoid further work on via-pmu68k that's not needed for via-pmu.
3) Fix some bugs in the via-pmu driver.
4) Enable the /dev/pmu and /proc/pmu/* userspace APIs on m68k Macs
by adopting via-pmu.
5) Improve stability on early 100-series PowerBooks by loading no PMU
driver at all. Neither via-pmu nor via-pmu68k supports the early
M50753-based PMU device found in these models.
6) Eliminate duplicated RTC accessors for PMU and Cuda. Presently these
can be found under both arch/m68k and arch/powerpc.
7) Assist the out-of-tree NuBus PowerMac port to support PMU designs
shared with the m68k Mac port (e.g. PowerBooks 190 and 5300).
This patch series has been regression tested on various PowerBooks
(190, 520, 3400, Pismo G3) and PowerMacs (Beige G3, G5). These patches
did not affect userland utilities. (Note that there is a userland-
visible change to the contents of /proc/pmu/interrupts.)
Changed since v1:
1) Added blank lines after 'break' statements in patch 10.
2) Improved patch description for patch 3.
3) Added reviewed-by tags.
4) Split patch 8 to make code review easier.
Changed since v2:
1) Added reviewed-by tag.
2) Retained PMU_68K_V1 and PMU_68K_V2 symbols.
Finn Thain (12):
macintosh/via-pmu: Fix section mismatch warning
macintosh/via-pmu: Add missing mmio accessors
macintosh/via-pmu: Don't clear shift register interrupt flag twice
macintosh/via-pmu: Enhance state machine with new 'uninitialized'
state
macintosh/via-pmu: Replace via pointer with via1 and via2 pointers
macintosh/via-pmu: Add support for m68k PowerBooks
macintosh/via-pmu: Make CONFIG_PPC_PMAC Kconfig deps explicit
macintosh/via-pmu68k: Don't load driver on unsupported hardware
macintosh/via-pmu: Replace via-pmu68k driver with via-pmu driver
macintosh: Use common code to access RTC
macintosh/via-pmu: Clean up interrupt statistics
macintosh/via-pmu: Disambiguate interrupt statistics
arch/m68k/configs/mac_defconfig | 2 +-
arch/m68k/configs/multi_defconfig | 2 +-
arch/m68k/mac/config.c | 2 +-
arch/m68k/mac/misc.c | 118 +----
arch/powerpc/platforms/powermac/time.c | 74 +--
drivers/macintosh/Kconfig | 19 +-
drivers/macintosh/Makefile | 1 -
drivers/macintosh/adb.c | 2 +-
drivers/macintosh/via-cuda.c | 34 ++
drivers/macintosh/via-pmu.c | 378 ++++++++++-----
drivers/macintosh/via-pmu68k.c | 850 ---------------------------------
include/linux/cuda.h | 3 +
include/linux/pmu.h | 3 +
include/uapi/linux/pmu.h | 4 +-
14 files changed, 313 insertions(+), 1179 deletions(-)
delete mode 100644 drivers/macintosh/via-pmu68k.c
--
2.16.4
^ permalink raw reply [flat|nested] 20+ messages in thread
* [PATCH v3 01/12] macintosh/via-pmu: Fix section mismatch warning
2018-06-13 10:38 [PATCH v3 00/12] macintosh: Resolve various PMU driver problems Finn Thain
` (3 preceding siblings ...)
2018-06-13 10:38 ` [PATCH v3 05/12] macintosh/via-pmu: Replace via pointer with via1 and via2 pointers Finn Thain
@ 2018-06-13 10:38 ` Finn Thain
2018-06-13 10:38 ` [PATCH v3 04/12] macintosh/via-pmu: Enhance state machine with new 'uninitialized' state Finn Thain
` (7 subsequent siblings)
12 siblings, 0 replies; 20+ messages in thread
From: Finn Thain @ 2018-06-13 10:38 UTC (permalink / raw)
To: Benjamin Herrenschmidt
Cc: Michael Schmitz, linuxppc-dev, linux-m68k, linux-kernel
The pmu_init() function has the __init qualifier, but the ops struct
that holds a pointer to it does not. This causes a build warning.
The driver works fine because the pointer is only dereferenced early.
The function is so small that there's negligible benefit from using
the __init qualifier. Remove it to fix the warning, consistent with
the other ADB drivers.
Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
---
drivers/macintosh/via-pmu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c
index 433dbeddfcf9..fd3c5640d586 100644
--- a/drivers/macintosh/via-pmu.c
+++ b/drivers/macintosh/via-pmu.c
@@ -378,7 +378,7 @@ static int pmu_probe(void)
return vias == NULL? -ENODEV: 0;
}
-static int __init pmu_init(void)
+static int pmu_init(void)
{
if (vias == NULL)
return -ENODEV;
--
2.16.4
^ permalink raw reply related [flat|nested] 20+ messages in thread
* [PATCH v3 04/12] macintosh/via-pmu: Enhance state machine with new 'uninitialized' state
2018-06-13 10:38 [PATCH v3 00/12] macintosh: Resolve various PMU driver problems Finn Thain
` (4 preceding siblings ...)
2018-06-13 10:38 ` [PATCH v3 01/12] macintosh/via-pmu: Fix section mismatch warning Finn Thain
@ 2018-06-13 10:38 ` Finn Thain
2018-06-13 10:38 ` [PATCH v3 07/12] macintosh/via-pmu: Make CONFIG_PPC_PMAC Kconfig deps explicit Finn Thain
` (6 subsequent siblings)
12 siblings, 0 replies; 20+ messages in thread
From: Finn Thain @ 2018-06-13 10:38 UTC (permalink / raw)
To: Benjamin Herrenschmidt
Cc: Michael Schmitz, linuxppc-dev, linux-m68k, linux-kernel
On 68k Macs, the via/vias pointer can't be used to determine whether
the PMU driver has been initialized. For portability, add a new state
to indicate that via_find_pmu() succeeded.
After via_find_pmu() executes, testing vias == NULL is equivalent to
testing via == NULL. Replace these tests with pmu_state == uninitialized
which is simpler and more consistent. No functional change.
Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
---
drivers/macintosh/via-pmu.c | 44 ++++++++++++++++++++++----------------------
1 file changed, 22 insertions(+), 22 deletions(-)
diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c
index 4c1bae5380c2..c4c324fb5fa6 100644
--- a/drivers/macintosh/via-pmu.c
+++ b/drivers/macintosh/via-pmu.c
@@ -114,6 +114,7 @@ static volatile unsigned char __iomem *via;
#define CB1_INT 0x10 /* transition on CB1 input */
static volatile enum pmu_state {
+ uninitialized = 0,
idle,
sending,
intack,
@@ -274,7 +275,7 @@ int __init find_via_pmu(void)
u64 taddr;
const u32 *reg;
- if (via != 0)
+ if (pmu_state != uninitialized)
return 1;
vias = of_find_node_by_name(NULL, "via-pmu");
if (vias == NULL)
@@ -369,20 +370,19 @@ int __init find_via_pmu(void)
fail:
of_node_put(vias);
vias = NULL;
+ pmu_state = uninitialized;
return 0;
}
#ifdef CONFIG_ADB
static int pmu_probe(void)
{
- return vias == NULL? -ENODEV: 0;
+ return pmu_state == uninitialized ? -ENODEV : 0;
}
static int pmu_init(void)
{
- if (vias == NULL)
- return -ENODEV;
- return 0;
+ return pmu_state == uninitialized ? -ENODEV : 0;
}
#endif /* CONFIG_ADB */
@@ -397,7 +397,7 @@ static int __init via_pmu_start(void)
{
unsigned int irq;
- if (vias == NULL)
+ if (pmu_state == uninitialized)
return -ENODEV;
batt_req.complete = 1;
@@ -463,7 +463,7 @@ arch_initcall(via_pmu_start);
*/
static int __init via_pmu_dev_init(void)
{
- if (vias == NULL)
+ if (pmu_state == uninitialized)
return -ENODEV;
#ifdef CONFIG_PMAC_BACKLIGHT
@@ -966,7 +966,7 @@ static int pmu_send_request(struct adb_request *req, int sync)
{
int i, ret;
- if ((vias == NULL) || (!pmu_fully_inited)) {
+ if (pmu_state == uninitialized || !pmu_fully_inited) {
req->complete = 1;
return -ENXIO;
}
@@ -1060,7 +1060,7 @@ static int __pmu_adb_autopoll(int devs)
static int pmu_adb_autopoll(int devs)
{
- if ((vias == NULL) || (!pmu_fully_inited) || !pmu_has_adb)
+ if (pmu_state == uninitialized || !pmu_fully_inited || !pmu_has_adb)
return -ENXIO;
adb_dev_map = devs;
@@ -1073,7 +1073,7 @@ static int pmu_adb_reset_bus(void)
struct adb_request req;
int save_autopoll = adb_dev_map;
- if ((vias == NULL) || (!pmu_fully_inited) || !pmu_has_adb)
+ if (pmu_state == uninitialized || !pmu_fully_inited || !pmu_has_adb)
return -ENXIO;
/* anyone got a better idea?? */
@@ -1109,7 +1109,7 @@ pmu_request(struct adb_request *req, void (*done)(struct adb_request *),
va_list list;
int i;
- if (vias == NULL)
+ if (pmu_state == uninitialized)
return -ENXIO;
if (nbytes < 0 || nbytes > 32) {
@@ -1134,7 +1134,7 @@ pmu_queue_request(struct adb_request *req)
unsigned long flags;
int nsend;
- if (via == NULL) {
+ if (pmu_state == uninitialized) {
req->complete = 1;
return -ENXIO;
}
@@ -1247,7 +1247,7 @@ pmu_start(void)
void
pmu_poll(void)
{
- if (!via)
+ if (pmu_state == uninitialized)
return;
if (disable_poll)
return;
@@ -1257,7 +1257,7 @@ pmu_poll(void)
void
pmu_poll_adb(void)
{
- if (!via)
+ if (pmu_state == uninitialized)
return;
if (disable_poll)
return;
@@ -1272,7 +1272,7 @@ pmu_poll_adb(void)
void
pmu_wait_complete(struct adb_request *req)
{
- if (!via)
+ if (pmu_state == uninitialized)
return;
while((pmu_state != idle && pmu_state != locked) || !req->complete)
via_pmu_interrupt(0, NULL);
@@ -1288,7 +1288,7 @@ pmu_suspend(void)
{
unsigned long flags;
- if (!via)
+ if (pmu_state == uninitialized)
return;
spin_lock_irqsave(&pmu_lock, flags);
@@ -1319,7 +1319,7 @@ pmu_resume(void)
{
unsigned long flags;
- if (!via || (pmu_suspended < 1))
+ if (pmu_state == uninitialized || pmu_suspended < 1)
return;
spin_lock_irqsave(&pmu_lock, flags);
@@ -1681,7 +1681,7 @@ pmu_enable_irled(int on)
{
struct adb_request req;
- if (vias == NULL)
+ if (pmu_state == uninitialized)
return ;
if (pmu_kind == PMU_KEYLARGO_BASED)
return ;
@@ -1696,7 +1696,7 @@ pmu_restart(void)
{
struct adb_request req;
- if (via == NULL)
+ if (pmu_state == uninitialized)
return;
local_irq_disable();
@@ -1721,7 +1721,7 @@ pmu_shutdown(void)
{
struct adb_request req;
- if (via == NULL)
+ if (pmu_state == uninitialized)
return;
local_irq_disable();
@@ -1749,7 +1749,7 @@ pmu_shutdown(void)
int
pmu_present(void)
{
- return via != 0;
+ return pmu_state != uninitialized;
}
#if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32)
@@ -2415,7 +2415,7 @@ static struct miscdevice pmu_device = {
static int pmu_device_init(void)
{
- if (!via)
+ if (pmu_state == uninitialized)
return 0;
if (misc_register(&pmu_device) < 0)
printk(KERN_ERR "via-pmu: cannot register misc device.\n");
--
2.16.4
^ permalink raw reply related [flat|nested] 20+ messages in thread
* [PATCH v3 06/12] macintosh/via-pmu: Add support for m68k PowerBooks
2018-06-13 10:38 [PATCH v3 00/12] macintosh: Resolve various PMU driver problems Finn Thain
` (6 preceding siblings ...)
2018-06-13 10:38 ` [PATCH v3 07/12] macintosh/via-pmu: Make CONFIG_PPC_PMAC Kconfig deps explicit Finn Thain
@ 2018-06-13 10:38 ` Finn Thain
2018-06-13 10:38 ` [PATCH v3 09/12] macintosh/via-pmu: Replace via-pmu68k driver with via-pmu driver Finn Thain
` (4 subsequent siblings)
12 siblings, 0 replies; 20+ messages in thread
From: Finn Thain @ 2018-06-13 10:38 UTC (permalink / raw)
To: Benjamin Herrenschmidt
Cc: Michael Schmitz, linuxppc-dev, linux-m68k, linux-kernel
Put #ifdefs around the Open Firmware, xmon, interrupt dispatch,
battery and suspend code. Add the necessary interrupt handling to
support m68k PowerBooks.
The pmu_kind value is available to userspace using the
PMU_IOC_GET_MODEL ioctl. It is not clear yet what hardware classes
are be needed to describe m68k PowerBook models, so pmu_kind is given
the provisional value PMU_UNKNOWN.
To find out about the hardware, user programs can use /proc/bootinfo
or /proc/hardware, or send the PMU_GET_VERSION command using /dev/adb.
Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
---
drivers/macintosh/Kconfig | 2 +-
drivers/macintosh/via-pmu.c | 101 +++++++++++++++++++++++++++++++++++++++-----
2 files changed, 91 insertions(+), 12 deletions(-)
diff --git a/drivers/macintosh/Kconfig b/drivers/macintosh/Kconfig
index 97a420c11eed..9c6452b38c36 100644
--- a/drivers/macintosh/Kconfig
+++ b/drivers/macintosh/Kconfig
@@ -65,7 +65,7 @@ config ADB_CUDA
If unsure say Y.
config ADB_PMU
- bool "Support for PMU based PowerMacs"
+ bool "Support for PMU based PowerMacs and PowerBooks"
depends on PPC_PMAC
help
On PowerBooks, iBooks, and recent iMacs and Power Macintoshes, the
diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c
index 2e09137410f6..22cb7d94e3ce 100644
--- a/drivers/macintosh/via-pmu.c
+++ b/drivers/macintosh/via-pmu.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0
/*
- * Device driver for the via-pmu on Apple Powermacs.
+ * Device driver for the PMU in Apple PowerBooks and PowerMacs.
*
* The VIA (versatile interface adapter) interfaces to the PMU,
* a 6805 microprocessor core whose primary function is to control
@@ -49,20 +49,26 @@
#include <linux/compat.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
-#include <asm/prom.h>
+#include <linux/uaccess.h>
#include <asm/machdep.h>
#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/sections.h>
#include <asm/irq.h>
+#ifdef CONFIG_PPC_PMAC
#include <asm/pmac_feature.h>
#include <asm/pmac_pfunc.h>
#include <asm/pmac_low_i2c.h>
-#include <linux/uaccess.h>
+#include <asm/prom.h>
#include <asm/mmu_context.h>
#include <asm/cputable.h>
#include <asm/time.h>
#include <asm/backlight.h>
+#else
+#include <asm/macintosh.h>
+#include <asm/macints.h>
+#include <asm/mac_via.h>
+#endif
#include "via-pmu-event.h"
@@ -97,8 +103,13 @@ static DEFINE_MUTEX(pmu_info_proc_mutex);
#define ANH (15*RS) /* A-side data, no handshake */
/* Bits in B data register: both active low */
+#ifdef CONFIG_PPC_PMAC
#define TACK 0x08 /* Transfer acknowledge (input) */
#define TREQ 0x10 /* Transfer request (output) */
+#else
+#define TACK 0x02
+#define TREQ 0x04
+#endif
/* Bits in ACR */
#define SR_CTRL 0x1c /* Shift register control bits */
@@ -140,13 +151,15 @@ static int data_index;
static int data_len;
static volatile int adb_int_pending;
static volatile int disable_poll;
-static struct device_node *vias;
static int pmu_kind = PMU_UNKNOWN;
static int pmu_fully_inited;
static int pmu_has_adb;
+#ifdef CONFIG_PPC_PMAC
static volatile unsigned char __iomem *via1;
static volatile unsigned char __iomem *via2;
+static struct device_node *vias;
static struct device_node *gpio_node;
+#endif
static unsigned char __iomem *gpio_reg;
static int gpio_irq = 0;
static int gpio_irq_enabled = -1;
@@ -273,6 +286,7 @@ static char *pbook_type[] = {
int __init find_via_pmu(void)
{
+#ifdef CONFIG_PPC_PMAC
u64 taddr;
const u32 *reg;
@@ -355,9 +369,6 @@ int __init find_via_pmu(void)
if (!init_pmu())
goto fail_init;
- printk(KERN_INFO "PMU driver v%d initialized for %s, firmware: %02x\n",
- PMU_DRIVER_VERSION, pbook_type[pmu_kind], pmu_version);
-
sys_ctrler = SYS_CTRLER_PMU;
return 1;
@@ -373,6 +384,30 @@ int __init find_via_pmu(void)
vias = NULL;
pmu_state = uninitialized;
return 0;
+#else
+ if (macintosh_config->adb_type != MAC_ADB_PB2)
+ return 0;
+
+ pmu_kind = PMU_UNKNOWN;
+
+ spin_lock_init(&pmu_lock);
+
+ pmu_has_adb = 1;
+
+ pmu_intr_mask = PMU_INT_PCEJECT |
+ PMU_INT_SNDBRT |
+ PMU_INT_ADB |
+ PMU_INT_TICK;
+
+ pmu_state = idle;
+
+ if (!init_pmu()) {
+ pmu_state = uninitialized;
+ return 0;
+ }
+
+ return 1;
+#endif /* !CONFIG_PPC_PMAC */
}
#ifdef CONFIG_ADB
@@ -396,13 +431,14 @@ static int pmu_init(void)
*/
static int __init via_pmu_start(void)
{
- unsigned int irq;
+ unsigned int __maybe_unused irq;
if (pmu_state == uninitialized)
return -ENODEV;
batt_req.complete = 1;
+#ifdef CONFIG_PPC_PMAC
irq = irq_of_parse_and_map(vias, 0);
if (!irq) {
printk(KERN_ERR "via-pmu: can't map interrupt\n");
@@ -439,6 +475,19 @@ static int __init via_pmu_start(void)
/* Enable interrupts */
out_8(&via1[IER], IER_SET | SR_INT | CB1_INT);
+#else
+ if (request_irq(IRQ_MAC_ADB_SR, via_pmu_interrupt, IRQF_NO_SUSPEND,
+ "VIA-PMU-SR", NULL)) {
+ pr_err("%s: couldn't get SR irq\n", __func__);
+ return -ENODEV;
+ }
+ if (request_irq(IRQ_MAC_ADB_CL, via_pmu_interrupt, IRQF_NO_SUSPEND,
+ "VIA-PMU-CL", NULL)) {
+ pr_err("%s: couldn't get CL irq\n", __func__);
+ free_irq(IRQ_MAC_ADB_SR, NULL);
+ return -ENODEV;
+ }
+#endif /* !CONFIG_PPC_PMAC */
pmu_fully_inited = 1;
@@ -587,6 +636,10 @@ init_pmu(void)
option_server_mode ? "enabled" : "disabled");
}
}
+
+ printk(KERN_INFO "PMU driver v%d initialized for %s, firmware: %02x\n",
+ PMU_DRIVER_VERSION, pbook_type[pmu_kind], pmu_version);
+
return 1;
}
@@ -625,6 +678,7 @@ static void pmu_set_server_mode(int server_mode)
static void
done_battery_state_ohare(struct adb_request* req)
{
+#ifdef CONFIG_PPC_PMAC
/* format:
* [0] : flags
* 0x01 : AC indicator
@@ -706,6 +760,7 @@ done_battery_state_ohare(struct adb_request* req)
pmu_batteries[pmu_cur_battery].amperage = amperage;
pmu_batteries[pmu_cur_battery].voltage = voltage;
pmu_batteries[pmu_cur_battery].time_remaining = time;
+#endif /* CONFIG_PPC_PMAC */
clear_bit(0, &async_req_locks);
}
@@ -1393,6 +1448,7 @@ pmu_handle_data(unsigned char *data, int len)
}
pmu_done(req);
} else {
+#ifdef CONFIG_XMON
if (len == 4 && data[1] == 0x2c) {
extern int xmon_wants_key, xmon_adb_keycode;
if (xmon_wants_key) {
@@ -1400,6 +1456,7 @@ pmu_handle_data(unsigned char *data, int len)
return;
}
}
+#endif /* CONFIG_XMON */
#ifdef CONFIG_ADB
/*
* XXX On the [23]400 the PMU gives us an up
@@ -1567,7 +1624,25 @@ via_pmu_interrupt(int irq, void *arg)
++disable_poll;
for (;;) {
- intr = in_8(&via1[IFR]) & (SR_INT | CB1_INT);
+ /* On 68k Macs, VIA interrupts are dispatched individually.
+ * Unless we are polling, the relevant IRQ flag has already
+ * been cleared.
+ */
+ intr = 0;
+ if (IS_ENABLED(CONFIG_PPC_PMAC) || !irq) {
+ intr = in_8(&via1[IFR]) & (SR_INT | CB1_INT);
+ out_8(&via1[IFR], intr);
+ }
+#ifndef CONFIG_PPC_PMAC
+ switch (irq) {
+ case IRQ_MAC_ADB_CL:
+ intr = CB1_INT;
+ break;
+ case IRQ_MAC_ADB_SR:
+ intr = SR_INT;
+ break;
+ }
+#endif
if (intr == 0)
break;
handled = 1;
@@ -1577,7 +1652,6 @@ via_pmu_interrupt(int irq, void *arg)
intr, in_8(&via1[IER]), pmu_state);
break;
}
- out_8(&via1[IFR], intr);
if (intr & CB1_INT) {
adb_int_pending = 1;
pmu_irq_stats[0]++;
@@ -1587,6 +1661,9 @@ via_pmu_interrupt(int irq, void *arg)
if (req)
break;
}
+#ifndef CONFIG_PPC_PMAC
+ break;
+#endif
}
recheck:
@@ -1653,7 +1730,7 @@ pmu_unlock(void)
}
-static irqreturn_t
+static __maybe_unused irqreturn_t
gpio1_interrupt(int irq, void *arg)
{
unsigned long flags;
@@ -2287,6 +2364,7 @@ static int pmu_ioctl(struct file *filp,
int error = -EINVAL;
switch (cmd) {
+#ifdef CONFIG_PPC_PMAC
case PMU_IOC_SLEEP:
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
@@ -2296,6 +2374,7 @@ static int pmu_ioctl(struct file *filp,
return put_user(0, argp);
else
return put_user(1, argp);
+#endif
#ifdef CONFIG_PMAC_BACKLIGHT_LEGACY
/* Compatibility ioctl's for backlight */
--
2.16.4
^ permalink raw reply related [flat|nested] 20+ messages in thread
* [PATCH v3 05/12] macintosh/via-pmu: Replace via pointer with via1 and via2 pointers
2018-06-13 10:38 [PATCH v3 00/12] macintosh: Resolve various PMU driver problems Finn Thain
` (2 preceding siblings ...)
2018-06-13 10:38 ` [PATCH v3 03/12] macintosh/via-pmu: Don't clear shift register interrupt flag twice Finn Thain
@ 2018-06-13 10:38 ` Finn Thain
2018-06-13 10:38 ` [PATCH v3 01/12] macintosh/via-pmu: Fix section mismatch warning Finn Thain
` (8 subsequent siblings)
12 siblings, 0 replies; 20+ messages in thread
From: Finn Thain @ 2018-06-13 10:38 UTC (permalink / raw)
To: Benjamin Herrenschmidt
Cc: Michael Schmitz, linuxppc-dev, linux-m68k, linux-kernel
On most PowerPC Macs, the PMU driver uses the shift register and
IO port B from a single VIA chip.
On 68k and early PowerPC PowerBooks, the driver uses the shift register
from one VIA chip together with IO port B from another.
Replace via with via1 and via2 to accommodate this. For the
CONFIG_PPC_PMAC case, set via1 = via2 so there is no change.
Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
---
drivers/macintosh/via-pmu.c | 142 +++++++++++++++++++++-----------------------
1 file changed, 69 insertions(+), 73 deletions(-)
diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c
index c4c324fb5fa6..2e09137410f6 100644
--- a/drivers/macintosh/via-pmu.c
+++ b/drivers/macintosh/via-pmu.c
@@ -76,7 +76,6 @@
#define BATTERY_POLLING_COUNT 2
static DEFINE_MUTEX(pmu_info_proc_mutex);
-static volatile unsigned char __iomem *via;
/* VIA registers - spaced 0x200 bytes apart */
#define RS 0x200 /* skip between registers */
@@ -145,6 +144,8 @@ static struct device_node *vias;
static int pmu_kind = PMU_UNKNOWN;
static int pmu_fully_inited;
static int pmu_has_adb;
+static volatile unsigned char __iomem *via1;
+static volatile unsigned char __iomem *via2;
static struct device_node *gpio_node;
static unsigned char __iomem *gpio_reg;
static int gpio_irq = 0;
@@ -340,14 +341,14 @@ int __init find_via_pmu(void)
} else
pmu_kind = PMU_UNKNOWN;
- via = ioremap(taddr, 0x2000);
- if (via == NULL) {
+ via1 = via2 = ioremap(taddr, 0x2000);
+ if (via1 == NULL) {
printk(KERN_ERR "via-pmu: Can't map address !\n");
goto fail_via_remap;
}
- out_8(&via[IER], IER_CLR | 0x7f); /* disable all intrs */
- out_8(&via[IFR], 0x7f); /* clear IFR */
+ out_8(&via1[IER], IER_CLR | 0x7f); /* disable all intrs */
+ out_8(&via1[IFR], 0x7f); /* clear IFR */
pmu_state = idle;
@@ -362,8 +363,8 @@ int __init find_via_pmu(void)
return 1;
fail_init:
- iounmap(via);
- via = NULL;
+ iounmap(via1);
+ via1 = via2 = NULL;
fail_via_remap:
iounmap(gpio_reg);
gpio_reg = NULL;
@@ -437,7 +438,7 @@ static int __init via_pmu_start(void)
}
/* Enable interrupts */
- out_8(&via[IER], IER_SET | SR_INT | CB1_INT);
+ out_8(&via1[IER], IER_SET | SR_INT | CB1_INT);
pmu_fully_inited = 1;
@@ -533,8 +534,8 @@ init_pmu(void)
struct adb_request req;
/* Negate TREQ. Set TACK to input and TREQ to output. */
- out_8(&via[B], in_8(&via[B]) | TREQ);
- out_8(&via[DIRB], (in_8(&via[DIRB]) | TREQ) & ~TACK);
+ out_8(&via2[B], in_8(&via2[B]) | TREQ);
+ out_8(&via2[DIRB], (in_8(&via2[DIRB]) | TREQ) & ~TACK);
pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask);
timeout = 100000;
@@ -1174,7 +1175,7 @@ wait_for_ack(void)
* reported
*/
int timeout = 4000;
- while ((in_8(&via[B]) & TACK) == 0) {
+ while ((in_8(&via2[B]) & TACK) == 0) {
if (--timeout < 0) {
printk(KERN_ERR "PMU not responding (!ack)\n");
return;
@@ -1188,23 +1189,19 @@ wait_for_ack(void)
static inline void
send_byte(int x)
{
- volatile unsigned char __iomem *v = via;
-
- out_8(&v[ACR], in_8(&v[ACR]) | SR_OUT | SR_EXT);
- out_8(&v[SR], x);
- out_8(&v[B], in_8(&v[B]) & ~TREQ); /* assert TREQ */
- (void)in_8(&v[B]);
+ out_8(&via1[ACR], in_8(&via1[ACR]) | SR_OUT | SR_EXT);
+ out_8(&via1[SR], x);
+ out_8(&via2[B], in_8(&via2[B]) & ~TREQ); /* assert TREQ */
+ (void)in_8(&via2[B]);
}
static inline void
recv_byte(void)
{
- volatile unsigned char __iomem *v = via;
-
- out_8(&v[ACR], (in_8(&v[ACR]) & ~SR_OUT) | SR_EXT);
- in_8(&v[SR]); /* resets SR */
- out_8(&v[B], in_8(&v[B]) & ~TREQ);
- (void)in_8(&v[B]);
+ out_8(&via1[ACR], (in_8(&via1[ACR]) & ~SR_OUT) | SR_EXT);
+ in_8(&via1[SR]); /* resets SR */
+ out_8(&via2[B], in_8(&via2[B]) & ~TREQ);
+ (void)in_8(&via2[B]);
}
static inline void
@@ -1307,7 +1304,7 @@ pmu_suspend(void)
if (!adb_int_pending && pmu_state == idle && !req_awaiting_reply) {
if (gpio_irq >= 0)
disable_irq_nosync(gpio_irq);
- out_8(&via[IER], CB1_INT | IER_CLR);
+ out_8(&via1[IER], CB1_INT | IER_CLR);
spin_unlock_irqrestore(&pmu_lock, flags);
break;
}
@@ -1331,7 +1328,7 @@ pmu_resume(void)
adb_int_pending = 1;
if (gpio_irq >= 0)
enable_irq(gpio_irq);
- out_8(&via[IER], CB1_INT | IER_SET);
+ out_8(&via1[IER], CB1_INT | IER_SET);
spin_unlock_irqrestore(&pmu_lock, flags);
pmu_poll();
}
@@ -1456,20 +1453,20 @@ pmu_sr_intr(void)
struct adb_request *req;
int bite = 0;
- if (in_8(&via[B]) & TREQ) {
- printk(KERN_ERR "PMU: spurious SR intr (%x)\n", in_8(&via[B]));
+ if (in_8(&via2[B]) & TREQ) {
+ printk(KERN_ERR "PMU: spurious SR intr (%x)\n", in_8(&via2[B]));
return NULL;
}
/* The ack may not yet be low when we get the interrupt */
- while ((in_8(&via[B]) & TACK) != 0)
+ while ((in_8(&via2[B]) & TACK) != 0)
;
/* if reading grab the byte, and reset the interrupt */
if (pmu_state == reading || pmu_state == reading_intr)
- bite = in_8(&via[SR]);
+ bite = in_8(&via1[SR]);
/* reset TREQ and wait for TACK to go high */
- out_8(&via[B], in_8(&via[B]) | TREQ);
+ out_8(&via2[B], in_8(&via2[B]) | TREQ);
wait_for_ack();
switch (pmu_state) {
@@ -1570,17 +1567,17 @@ via_pmu_interrupt(int irq, void *arg)
++disable_poll;
for (;;) {
- intr = in_8(&via[IFR]) & (SR_INT | CB1_INT);
+ intr = in_8(&via1[IFR]) & (SR_INT | CB1_INT);
if (intr == 0)
break;
handled = 1;
if (++nloop > 1000) {
printk(KERN_DEBUG "PMU: stuck in intr loop, "
"intr=%x, ier=%x pmu_state=%d\n",
- intr, in_8(&via[IER]), pmu_state);
+ intr, in_8(&via1[IER]), pmu_state);
break;
}
- out_8(&via[IFR], intr);
+ out_8(&via1[IFR], intr);
if (intr & CB1_INT) {
adb_int_pending = 1;
pmu_irq_stats[0]++;
@@ -1762,29 +1759,29 @@ static u32 save_via[8];
static void
save_via_state(void)
{
- save_via[0] = in_8(&via[ANH]);
- save_via[1] = in_8(&via[DIRA]);
- save_via[2] = in_8(&via[B]);
- save_via[3] = in_8(&via[DIRB]);
- save_via[4] = in_8(&via[PCR]);
- save_via[5] = in_8(&via[ACR]);
- save_via[6] = in_8(&via[T1CL]);
- save_via[7] = in_8(&via[T1CH]);
+ save_via[0] = in_8(&via1[ANH]);
+ save_via[1] = in_8(&via1[DIRA]);
+ save_via[2] = in_8(&via1[B]);
+ save_via[3] = in_8(&via1[DIRB]);
+ save_via[4] = in_8(&via1[PCR]);
+ save_via[5] = in_8(&via1[ACR]);
+ save_via[6] = in_8(&via1[T1CL]);
+ save_via[7] = in_8(&via1[T1CH]);
}
static void
restore_via_state(void)
{
- out_8(&via[ANH], save_via[0]);
- out_8(&via[DIRA], save_via[1]);
- out_8(&via[B], save_via[2]);
- out_8(&via[DIRB], save_via[3]);
- out_8(&via[PCR], save_via[4]);
- out_8(&via[ACR], save_via[5]);
- out_8(&via[T1CL], save_via[6]);
- out_8(&via[T1CH], save_via[7]);
- out_8(&via[IER], IER_CLR | 0x7f); /* disable all intrs */
- out_8(&via[IFR], 0x7f); /* clear IFR */
- out_8(&via[IER], IER_SET | SR_INT | CB1_INT);
+ out_8(&via1[ANH], save_via[0]);
+ out_8(&via1[DIRA], save_via[1]);
+ out_8(&via1[B], save_via[2]);
+ out_8(&via1[DIRB], save_via[3]);
+ out_8(&via1[PCR], save_via[4]);
+ out_8(&via1[ACR], save_via[5]);
+ out_8(&via1[T1CL], save_via[6]);
+ out_8(&via1[T1CH], save_via[7]);
+ out_8(&via1[IER], IER_CLR | 0x7f); /* disable all intrs */
+ out_8(&via1[IFR], 0x7f); /* clear IFR */
+ out_8(&via1[IER], IER_SET | SR_INT | CB1_INT);
}
#define GRACKLE_PM (1<<7)
@@ -2426,33 +2423,33 @@ device_initcall(pmu_device_init);
#ifdef DEBUG_SLEEP
static inline void
-polled_handshake(volatile unsigned char __iomem *via)
+polled_handshake(void)
{
- via[B] &= ~TREQ; eieio();
- while ((via[B] & TACK) != 0)
+ via2[B] &= ~TREQ; eieio();
+ while ((via2[B] & TACK) != 0)
;
- via[B] |= TREQ; eieio();
- while ((via[B] & TACK) == 0)
+ via2[B] |= TREQ; eieio();
+ while ((via2[B] & TACK) == 0)
;
}
static inline void
-polled_send_byte(volatile unsigned char __iomem *via, int x)
+polled_send_byte(int x)
{
- via[ACR] |= SR_OUT | SR_EXT; eieio();
- via[SR] = x; eieio();
- polled_handshake(via);
+ via1[ACR] |= SR_OUT | SR_EXT; eieio();
+ via1[SR] = x; eieio();
+ polled_handshake();
}
static inline int
-polled_recv_byte(volatile unsigned char __iomem *via)
+polled_recv_byte(void)
{
int x;
- via[ACR] = (via[ACR] & ~SR_OUT) | SR_EXT; eieio();
- x = via[SR]; eieio();
- polled_handshake(via);
- x = via[SR]; eieio();
+ via1[ACR] = (via1[ACR] & ~SR_OUT) | SR_EXT; eieio();
+ x = via1[SR]; eieio();
+ polled_handshake();
+ x = via1[SR]; eieio();
return x;
}
@@ -2461,7 +2458,6 @@ pmu_polled_request(struct adb_request *req)
{
unsigned long flags;
int i, l, c;
- volatile unsigned char __iomem *v = via;
req->complete = 1;
c = req->data[0];
@@ -2473,21 +2469,21 @@ pmu_polled_request(struct adb_request *req)
while (pmu_state != idle)
pmu_poll();
- while ((via[B] & TACK) == 0)
+ while ((via2[B] & TACK) == 0)
;
- polled_send_byte(v, c);
+ polled_send_byte(c);
if (l < 0) {
l = req->nbytes - 1;
- polled_send_byte(v, l);
+ polled_send_byte(l);
}
for (i = 1; i <= l; ++i)
- polled_send_byte(v, req->data[i]);
+ polled_send_byte(req->data[i]);
l = pmu_data_len[c][1];
if (l < 0)
- l = polled_recv_byte(v);
+ l = polled_recv_byte();
for (i = 0; i < l; ++i)
- req->reply[i + req->reply_len] = polled_recv_byte(v);
+ req->reply[i + req->reply_len] = polled_recv_byte();
if (req->done)
(*req->done)(req);
--
2.16.4
^ permalink raw reply related [flat|nested] 20+ messages in thread
* [PATCH v3 11/12] macintosh/via-pmu: Clean up interrupt statistics
2018-06-13 10:38 [PATCH v3 00/12] macintosh: Resolve various PMU driver problems Finn Thain
` (10 preceding siblings ...)
2018-06-13 10:38 ` Finn Thain
@ 2018-06-13 10:38 ` Finn Thain
2018-06-24 11:35 ` [PATCH v3 00/12] macintosh: Resolve various PMU driver problems Finn Thain
12 siblings, 0 replies; 20+ messages in thread
From: Finn Thain @ 2018-06-13 10:38 UTC (permalink / raw)
To: Benjamin Herrenschmidt
Cc: Michael Schmitz, linuxppc-dev, linux-m68k, linux-kernel
Replace an open-coded ffs() with the function call.
Simplify an if-else cascade using a switch statement.
Correct a typo and an indentation issue.
Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
---
drivers/macintosh/via-pmu.c | 39 ++++++++++++++++++++++-----------------
1 file changed, 22 insertions(+), 17 deletions(-)
diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c
index 38d7dd0bdb28..730c10f7fbb7 100644
--- a/drivers/macintosh/via-pmu.c
+++ b/drivers/macintosh/via-pmu.c
@@ -1392,7 +1392,8 @@ pmu_resume(void)
static void
pmu_handle_data(unsigned char *data, int len)
{
- unsigned char ints, pirq;
+ unsigned char ints;
+ int idx;
int i = 0;
asleep = 0;
@@ -1414,25 +1415,24 @@ pmu_handle_data(unsigned char *data, int len)
ints &= ~(PMU_INT_ADB_AUTO | PMU_INT_AUTO_SRQ_POLL);
next:
-
if (ints == 0) {
if (i > pmu_irq_stats[10])
pmu_irq_stats[10] = i;
return;
}
-
- for (pirq = 0; pirq < 8; pirq++)
- if (ints & (1 << pirq))
- break;
- pmu_irq_stats[pirq]++;
i++;
- ints &= ~(1 << pirq);
+
+ idx = ffs(ints) - 1;
+ ints &= ~BIT(idx);
+
+ pmu_irq_stats[idx]++;
/* Note: for some reason, we get an interrupt with len=1,
* data[0]==0 after each normal ADB interrupt, at least
* on the Pismo. Still investigating... --BenH
*/
- if ((1 << pirq) & PMU_INT_ADB) {
+ switch (BIT(idx)) {
+ case PMU_INT_ADB:
if ((data[0] & PMU_INT_ADB_AUTO) == 0) {
struct adb_request *req = req_awaiting_reply;
if (req == 0) {
@@ -1470,25 +1470,28 @@ pmu_handle_data(unsigned char *data, int len)
adb_input(data+1, len-1, 1);
#endif /* CONFIG_ADB */
}
- }
+ break;
+
/* Sound/brightness button pressed */
- else if ((1 << pirq) & PMU_INT_SNDBRT) {
+ case PMU_INT_SNDBRT:
#ifdef CONFIG_PMAC_BACKLIGHT
if (len == 3)
pmac_backlight_set_legacy_brightness_pmu(data[1] >> 4);
#endif
- }
+ break;
+
/* Tick interrupt */
- else if ((1 << pirq) & PMU_INT_TICK) {
- /* Environement or tick interrupt, query batteries */
+ case PMU_INT_TICK:
+ /* Environment or tick interrupt, query batteries */
if (pmu_battery_count) {
if ((--query_batt_timer) == 0) {
query_battery_state();
query_batt_timer = BATTERY_POLLING_COUNT;
}
}
- }
- else if ((1 << pirq) & PMU_INT_ENVIRONMENT) {
+ break;
+
+ case PMU_INT_ENVIRONMENT:
if (pmu_battery_count)
query_battery_state();
pmu_pass_intr(data, len);
@@ -1498,7 +1501,9 @@ pmu_handle_data(unsigned char *data, int len)
via_pmu_event(PMU_EVT_POWER, !!(data[1]&8));
via_pmu_event(PMU_EVT_LID, data[1]&1);
}
- } else {
+ break;
+
+ default:
pmu_pass_intr(data, len);
}
goto next;
--
2.16.4
^ permalink raw reply related [flat|nested] 20+ messages in thread
* [PATCH v3 12/12] macintosh/via-pmu: Disambiguate interrupt statistics
2018-06-13 10:38 [PATCH v3 00/12] macintosh: Resolve various PMU driver problems Finn Thain
` (8 preceding siblings ...)
2018-06-13 10:38 ` [PATCH v3 09/12] macintosh/via-pmu: Replace via-pmu68k driver with via-pmu driver Finn Thain
@ 2018-06-13 10:38 ` Finn Thain
2018-06-13 10:38 ` Finn Thain
` (2 subsequent siblings)
12 siblings, 0 replies; 20+ messages in thread
From: Finn Thain @ 2018-06-13 10:38 UTC (permalink / raw)
To: Benjamin Herrenschmidt
Cc: Michael Schmitz, linuxppc-dev, linux-m68k, linux-kernel
Some of the event counters are overloaded which makes it very
difficult to interpret their values.
Counter 0 is supposed to report CB1 interrupts but it can also count
PMU_INT_WAITING_CHARGER events.
Counter 1 is supposed to report GPIO interrupts but it can also count
other events (depending upon the value of the PMU_INT_ADB bit).
Disambiguate these statistics with dedicated counters for GPIO and
CB1 interrupts.
Comments in the MkLinux source code say that the type 0 and type 1
interrupts are model-specific. Label them as "unknown".
This change to the contents of /proc/pmu/interrupts is by necessity
visible in userland. However, packages which interact with the PMU
(that is, pbbuttonsd, pmac-utils and pmud) don't open this file.
AFAIK, user software has no need to poll these counters.
Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
---
The file now looks like this,
0: 0 (Unknown interrupt (type 0))
1: 0 (Unknown interrupt (type 1))
2: 0 (PC-Card eject button)
3: 23 (Sound/Brightness button)
4: 74 (ADB message)
5: 0 (Battery state change)
6: 0 (Environment interrupt)
7: 121 (Tick timer)
8: 0 (Ghost interrupt (zero len))
9: 1 (Empty interrupt (empty mask))
10: 2 (Max irqs in a row)
11: 194 (Total CB1 triggered events)
12: 0 (Total GPIO1 triggered events)
rather than this,
0: 194 (Total CB1 triggered events)
1: 0 (Total GPIO1 triggered events)
2: 0 (PC-Card eject button)
3: 23 (Sound/Brightness button)
4: 74 (ADB message)
5: 0 (Battery state change)
6: 0 (Environment interrupt)
7: 121 (Tick timer)
8: 0 (Ghost interrupt (zero len))
9: 1 (Empty interrupt (empty mask))
10: 2 (Max irqs in a row)
If some parser exists for this file, and if this change is problematic,
we could increment the driver version number in /proc/pmu/info, to
correspond with the format change.
---
drivers/macintosh/via-pmu.c | 20 ++++++++++++--------
1 file changed, 12 insertions(+), 8 deletions(-)
diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c
index 730c10f7fbb7..44919b3b56e0 100644
--- a/drivers/macintosh/via-pmu.c
+++ b/drivers/macintosh/via-pmu.c
@@ -172,7 +172,9 @@ static int drop_interrupts;
static int option_lid_wakeup = 1;
#endif /* CONFIG_SUSPEND && CONFIG_PPC32 */
static unsigned long async_req_locks;
-static unsigned int pmu_irq_stats[11];
+
+#define NUM_IRQ_STATS 13
+static unsigned int pmu_irq_stats[NUM_IRQ_STATS];
static struct proc_dir_entry *proc_pmu_root;
static struct proc_dir_entry *proc_pmu_info;
@@ -884,9 +886,9 @@ static const struct file_operations pmu_info_proc_fops = {
static int pmu_irqstats_proc_show(struct seq_file *m, void *v)
{
int i;
- static const char *irq_names[] = {
- "Total CB1 triggered events",
- "Total GPIO1 triggered events",
+ static const char *irq_names[NUM_IRQ_STATS] = {
+ "Unknown interrupt (type 0)",
+ "Unknown interrupt (type 1)",
"PC-Card eject button",
"Sound/Brightness button",
"ADB message",
@@ -895,10 +897,12 @@ static int pmu_irqstats_proc_show(struct seq_file *m, void *v)
"Tick timer",
"Ghost interrupt (zero len)",
"Empty interrupt (empty mask)",
- "Max irqs in a row"
+ "Max irqs in a row",
+ "Total CB1 triggered events",
+ "Total GPIO1 triggered events",
};
- for (i=0; i<11; i++) {
+ for (i = 0; i < NUM_IRQ_STATS; i++) {
seq_printf(m, " %2u: %10u (%s)\n",
i, pmu_irq_stats[i], irq_names[i]);
}
@@ -1659,7 +1663,7 @@ via_pmu_interrupt(int irq, void *arg)
}
if (intr & CB1_INT) {
adb_int_pending = 1;
- pmu_irq_stats[0]++;
+ pmu_irq_stats[11]++;
}
if (intr & SR_INT) {
req = pmu_sr_intr();
@@ -1746,7 +1750,7 @@ gpio1_interrupt(int irq, void *arg)
disable_irq_nosync(gpio_irq);
gpio_irq_enabled = 0;
}
- pmu_irq_stats[1]++;
+ pmu_irq_stats[12]++;
adb_int_pending = 1;
spin_unlock_irqrestore(&pmu_lock, flags);
via_pmu_interrupt(0, NULL);
--
2.16.4
^ permalink raw reply related [flat|nested] 20+ messages in thread
* [PATCH v3 10/12] macintosh: Use common code to access RTC
2018-06-13 10:38 [PATCH v3 00/12] macintosh: Resolve various PMU driver problems Finn Thain
@ 2018-06-13 10:38 ` Finn Thain
2018-06-13 10:38 ` [PATCH v3 08/12] macintosh/via-pmu68k: Don't load driver on unsupported hardware Finn Thain
` (11 subsequent siblings)
12 siblings, 0 replies; 20+ messages in thread
From: Finn Thain @ 2018-06-13 10:38 UTC (permalink / raw)
To: Benjamin Herrenschmidt
Cc: Michael Schmitz, linuxppc-dev, linux-m68k, linux-kernel,
Geert Uytterhoeven, Paul Mackerras, Michael Ellerman
Now that the 68k Mac port has adopted the via-pmu driver, it must access
the PMU RTC using the appropriate command format. The same code can now
be used for both m68k and powerpc.
Replace the RTC code that's duplicated in arch/powerpc and arch/m68k
with common RTC accessors for Cuda and PMU devices.
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Paul Mackerras <paulus@samba.org>,
Cc: Michael Ellerman <mpe@ellerman.id.au>
Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
---
arch/m68k/mac/misc.c | 64 ++---------------------------
arch/powerpc/platforms/powermac/time.c | 74 +---------------------------------
drivers/macintosh/via-cuda.c | 34 ++++++++++++++++
drivers/macintosh/via-pmu.c | 32 +++++++++++++++
include/linux/cuda.h | 3 ++
include/linux/pmu.h | 3 ++
6 files changed, 78 insertions(+), 132 deletions(-)
diff --git a/arch/m68k/mac/misc.c b/arch/m68k/mac/misc.c
index 28090a44fa09..397f9f942a9f 100644
--- a/arch/m68k/mac/misc.c
+++ b/arch/m68k/mac/misc.c
@@ -33,34 +33,6 @@
static void (*rom_reset)(void);
#ifdef CONFIG_ADB_CUDA
-static long cuda_read_time(void)
-{
- struct adb_request req;
- long time;
-
- if (cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_GET_TIME) < 0)
- return 0;
- while (!req.complete)
- cuda_poll();
-
- time = (req.reply[3] << 24) | (req.reply[4] << 16) |
- (req.reply[5] << 8) | req.reply[6];
- return time - RTC_OFFSET;
-}
-
-static void cuda_write_time(long data)
-{
- struct adb_request req;
-
- data += RTC_OFFSET;
- if (cuda_request(&req, NULL, 6, CUDA_PACKET, CUDA_SET_TIME,
- (data >> 24) & 0xFF, (data >> 16) & 0xFF,
- (data >> 8) & 0xFF, data & 0xFF) < 0)
- return;
- while (!req.complete)
- cuda_poll();
-}
-
static __u8 cuda_read_pram(int offset)
{
struct adb_request req;
@@ -86,34 +58,6 @@ static void cuda_write_pram(int offset, __u8 data)
#endif /* CONFIG_ADB_CUDA */
#ifdef CONFIG_ADB_PMU
-static long pmu_read_time(void)
-{
- struct adb_request req;
- long time;
-
- if (pmu_request(&req, NULL, 1, PMU_READ_RTC) < 0)
- return 0;
- while (!req.complete)
- pmu_poll();
-
- time = (req.reply[1] << 24) | (req.reply[2] << 16) |
- (req.reply[3] << 8) | req.reply[4];
- return time - RTC_OFFSET;
-}
-
-static void pmu_write_time(long data)
-{
- struct adb_request req;
-
- data += RTC_OFFSET;
- if (pmu_request(&req, NULL, 5, PMU_SET_RTC,
- (data >> 24) & 0xFF, (data >> 16) & 0xFF,
- (data >> 8) & 0xFF, data & 0xFF) < 0)
- return;
- while (!req.complete)
- pmu_poll();
-}
-
static __u8 pmu_read_pram(int offset)
{
struct adb_request req;
@@ -635,12 +579,12 @@ int mac_hwclk(int op, struct rtc_time *t)
#ifdef CONFIG_ADB_CUDA
case MAC_ADB_EGRET:
case MAC_ADB_CUDA:
- now = cuda_read_time();
+ now = cuda_get_time();
break;
#endif
#ifdef CONFIG_ADB_PMU
case MAC_ADB_PB2:
- now = pmu_read_time();
+ now = pmu_get_time();
break;
#endif
default:
@@ -671,12 +615,12 @@ int mac_hwclk(int op, struct rtc_time *t)
#ifdef CONFIG_ADB_CUDA
case MAC_ADB_EGRET:
case MAC_ADB_CUDA:
- cuda_write_time(now);
+ cuda_set_time(now);
break;
#endif
#ifdef CONFIG_ADB_PMU
case MAC_ADB_PB2:
- pmu_write_time(now);
+ pmu_set_time(now);
break;
#endif
default:
diff --git a/arch/powerpc/platforms/powermac/time.c b/arch/powerpc/platforms/powermac/time.c
index 274af6fa388e..e9c1f3dafe2f 100644
--- a/arch/powerpc/platforms/powermac/time.c
+++ b/arch/powerpc/platforms/powermac/time.c
@@ -42,9 +42,6 @@
#define DBG(x...)
#endif
-/* Apparently the RTC stores seconds since 1 Jan 1904 */
-#define RTC_OFFSET 2082844800
-
/*
* Calibrate the decrementer frequency with the VIA timer 1.
*/
@@ -103,43 +100,8 @@ static unsigned long from_rtc_time(struct rtc_time *tm)
#endif
#ifdef CONFIG_ADB_CUDA
-static unsigned long cuda_get_time(void)
-{
- struct adb_request req;
- unsigned int now;
-
- if (cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_GET_TIME) < 0)
- return 0;
- while (!req.complete)
- cuda_poll();
- if (req.reply_len != 7)
- printk(KERN_ERR "cuda_get_time: got %d byte reply\n",
- req.reply_len);
- now = (req.reply[3] << 24) + (req.reply[4] << 16)
- + (req.reply[5] << 8) + req.reply[6];
- return ((unsigned long)now) - RTC_OFFSET;
-}
-
#define cuda_get_rtc_time(tm) to_rtc_time(cuda_get_time(), (tm))
-
-static int cuda_set_rtc_time(struct rtc_time *tm)
-{
- unsigned int nowtime;
- struct adb_request req;
-
- nowtime = from_rtc_time(tm) + RTC_OFFSET;
- if (cuda_request(&req, NULL, 6, CUDA_PACKET, CUDA_SET_TIME,
- nowtime >> 24, nowtime >> 16, nowtime >> 8,
- nowtime) < 0)
- return -ENXIO;
- while (!req.complete)
- cuda_poll();
- if ((req.reply_len != 3) && (req.reply_len != 7))
- printk(KERN_ERR "cuda_set_rtc_time: got %d byte reply\n",
- req.reply_len);
- return 0;
-}
-
+#define cuda_set_rtc_time(tm) cuda_set_time(from_rtc_time(tm))
#else
#define cuda_get_time() 0
#define cuda_get_rtc_time(tm)
@@ -147,40 +109,8 @@ static int cuda_set_rtc_time(struct rtc_time *tm)
#endif
#ifdef CONFIG_ADB_PMU
-static unsigned long pmu_get_time(void)
-{
- struct adb_request req;
- unsigned int now;
-
- if (pmu_request(&req, NULL, 1, PMU_READ_RTC) < 0)
- return 0;
- pmu_wait_complete(&req);
- if (req.reply_len != 4)
- printk(KERN_ERR "pmu_get_time: got %d byte reply from PMU\n",
- req.reply_len);
- now = (req.reply[0] << 24) + (req.reply[1] << 16)
- + (req.reply[2] << 8) + req.reply[3];
- return ((unsigned long)now) - RTC_OFFSET;
-}
-
#define pmu_get_rtc_time(tm) to_rtc_time(pmu_get_time(), (tm))
-
-static int pmu_set_rtc_time(struct rtc_time *tm)
-{
- unsigned int nowtime;
- struct adb_request req;
-
- nowtime = from_rtc_time(tm) + RTC_OFFSET;
- if (pmu_request(&req, NULL, 5, PMU_SET_RTC, nowtime >> 24,
- nowtime >> 16, nowtime >> 8, nowtime) < 0)
- return -ENXIO;
- pmu_wait_complete(&req);
- if (req.reply_len != 0)
- printk(KERN_ERR "pmu_set_rtc_time: %d byte reply from PMU\n",
- req.reply_len);
- return 0;
-}
-
+#define pmu_set_rtc_time(tm) pmu_set_time(from_rtc_time(tm))
#else
#define pmu_get_time() 0
#define pmu_get_rtc_time(tm)
diff --git a/drivers/macintosh/via-cuda.c b/drivers/macintosh/via-cuda.c
index 019556136e77..8e7fb2115f10 100644
--- a/drivers/macintosh/via-cuda.c
+++ b/drivers/macintosh/via-cuda.c
@@ -771,3 +771,37 @@ cuda_input(unsigned char *buf, int nb)
buf, nb, false);
}
}
+
+/* Offset between Unix time (1970-based) and Mac time (1904-based) */
+#define RTC_OFFSET 2082844800
+
+unsigned long cuda_get_time(void)
+{
+ struct adb_request req;
+ unsigned long now;
+
+ if (cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_GET_TIME) < 0)
+ return 0;
+ while (!req.complete)
+ cuda_poll();
+ if (req.reply_len != 7)
+ pr_err("%s: got %d byte reply\n", __func__, req.reply_len);
+ now = (req.reply[3] << 24) + (req.reply[4] << 16) +
+ (req.reply[5] << 8) + req.reply[6];
+ return now - RTC_OFFSET;
+}
+
+int cuda_set_time(unsigned long now)
+{
+ struct adb_request req;
+
+ now += RTC_OFFSET;
+ if (cuda_request(&req, NULL, 6, CUDA_PACKET, CUDA_SET_TIME,
+ now >> 24, now >> 16, now >> 8, now) < 0)
+ return -ENXIO;
+ while (!req.complete)
+ cuda_poll();
+ if ((req.reply_len != 3) && (req.reply_len != 7))
+ pr_err("%s: got %d byte reply\n", __func__, req.reply_len);
+ return 0;
+}
diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c
index 22cb7d94e3ce..38d7dd0bdb28 100644
--- a/drivers/macintosh/via-pmu.c
+++ b/drivers/macintosh/via-pmu.c
@@ -1820,6 +1820,38 @@ pmu_shutdown(void)
;
}
+/* Offset between Unix time (1970-based) and Mac time (1904-based) */
+#define RTC_OFFSET 2082844800
+
+unsigned long pmu_get_time(void)
+{
+ struct adb_request req;
+ unsigned long now;
+
+ if (pmu_request(&req, NULL, 1, PMU_READ_RTC) < 0)
+ return 0;
+ pmu_wait_complete(&req);
+ if (req.reply_len != 4)
+ pr_err("%s: got %d byte reply\n", __func__, req.reply_len);
+ now = (req.reply[0] << 24) + (req.reply[1] << 16) +
+ (req.reply[2] << 8) + req.reply[3];
+ return now - RTC_OFFSET;
+}
+
+int pmu_set_time(unsigned long now)
+{
+ struct adb_request req;
+
+ now += RTC_OFFSET;
+ if (pmu_request(&req, NULL, 5, PMU_SET_RTC,
+ now >> 24, now >> 16, now >> 8, now) < 0)
+ return -ENXIO;
+ pmu_wait_complete(&req);
+ if (req.reply_len != 0)
+ pr_err("%s: got %d byte reply\n", __func__, req.reply_len);
+ return 0;
+}
+
int
pmu_present(void)
{
diff --git a/include/linux/cuda.h b/include/linux/cuda.h
index 056867f09a01..a68669f746e1 100644
--- a/include/linux/cuda.h
+++ b/include/linux/cuda.h
@@ -16,4 +16,7 @@ extern int cuda_request(struct adb_request *req,
void (*done)(struct adb_request *), int nbytes, ...);
extern void cuda_poll(void);
+extern unsigned long cuda_get_time(void);
+extern int cuda_set_time(unsigned long now);
+
#endif /* _LINUX_CUDA_H */
diff --git a/include/linux/pmu.h b/include/linux/pmu.h
index 9ac8fc60ad49..feefd0bff9cf 100644
--- a/include/linux/pmu.h
+++ b/include/linux/pmu.h
@@ -34,6 +34,9 @@ static inline void pmu_resume(void)
{}
#endif
+extern unsigned long pmu_get_time(void);
+extern int pmu_set_time(unsigned long now);
+
extern void pmu_enable_irled(int on);
extern void pmu_restart(void);
--
2.16.4
^ permalink raw reply related [flat|nested] 20+ messages in thread
* [PATCH v3 09/12] macintosh/via-pmu: Replace via-pmu68k driver with via-pmu driver
2018-06-13 10:38 [PATCH v3 00/12] macintosh: Resolve various PMU driver problems Finn Thain
` (7 preceding siblings ...)
2018-06-13 10:38 ` [PATCH v3 06/12] macintosh/via-pmu: Add support for m68k PowerBooks Finn Thain
@ 2018-06-13 10:38 ` Finn Thain
2018-06-13 10:38 ` [PATCH v3 12/12] macintosh/via-pmu: Disambiguate interrupt statistics Finn Thain
` (3 subsequent siblings)
12 siblings, 0 replies; 20+ messages in thread
From: Finn Thain @ 2018-06-13 10:38 UTC (permalink / raw)
To: Benjamin Herrenschmidt
Cc: Michael Schmitz, linuxppc-dev, linux-m68k, linux-kernel,
Geert Uytterhoeven
Now that the PowerMac via-pmu driver supports m68k PowerBooks,
switch over to that driver and remove the via-pmu68k driver.
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
---
arch/m68k/configs/mac_defconfig | 2 +-
arch/m68k/configs/multi_defconfig | 2 +-
arch/m68k/mac/config.c | 2 +-
arch/m68k/mac/misc.c | 48 +--
drivers/macintosh/Kconfig | 13 +-
drivers/macintosh/Makefile | 1 -
drivers/macintosh/adb.c | 2 +-
drivers/macintosh/via-pmu68k.c | 846 --------------------------------------
include/uapi/linux/pmu.h | 2 +-
9 files changed, 14 insertions(+), 904 deletions(-)
delete mode 100644 drivers/macintosh/via-pmu68k.c
diff --git a/arch/m68k/configs/mac_defconfig b/arch/m68k/configs/mac_defconfig
index 390d4a87441c..ee63f1242e9a 100644
--- a/arch/m68k/configs/mac_defconfig
+++ b/arch/m68k/configs/mac_defconfig
@@ -370,7 +370,7 @@ CONFIG_TCM_PSCSI=m
CONFIG_ADB=y
CONFIG_ADB_MACII=y
CONFIG_ADB_IOP=y
-CONFIG_ADB_PMU68K=y
+CONFIG_ADB_PMU=y
CONFIG_ADB_CUDA=y
CONFIG_INPUT_ADBHID=y
CONFIG_MAC_EMUMOUSEBTN=y
diff --git a/arch/m68k/configs/multi_defconfig b/arch/m68k/configs/multi_defconfig
index 77be97d82dc3..6421a3da616c 100644
--- a/arch/m68k/configs/multi_defconfig
+++ b/arch/m68k/configs/multi_defconfig
@@ -403,7 +403,7 @@ CONFIG_TCM_PSCSI=m
CONFIG_ADB=y
CONFIG_ADB_MACII=y
CONFIG_ADB_IOP=y
-CONFIG_ADB_PMU68K=y
+CONFIG_ADB_PMU=y
CONFIG_ADB_CUDA=y
CONFIG_INPUT_ADBHID=y
CONFIG_MAC_EMUMOUSEBTN=y
diff --git a/arch/m68k/mac/config.c b/arch/m68k/mac/config.c
index e522307db47c..92e80cf0d8aa 100644
--- a/arch/m68k/mac/config.c
+++ b/arch/m68k/mac/config.c
@@ -891,7 +891,7 @@ static void __init mac_identify(void)
#ifdef CONFIG_ADB_CUDA
find_via_cuda();
#endif
-#ifdef CONFIG_ADB_PMU68K
+#ifdef CONFIG_ADB_PMU
find_via_pmu();
#endif
}
diff --git a/arch/m68k/mac/misc.c b/arch/m68k/mac/misc.c
index 7ccb799eeb57..28090a44fa09 100644
--- a/arch/m68k/mac/misc.c
+++ b/arch/m68k/mac/misc.c
@@ -85,7 +85,7 @@ static void cuda_write_pram(int offset, __u8 data)
}
#endif /* CONFIG_ADB_CUDA */
-#ifdef CONFIG_ADB_PMU68K
+#ifdef CONFIG_ADB_PMU
static long pmu_read_time(void)
{
struct adb_request req;
@@ -136,7 +136,7 @@ static void pmu_write_pram(int offset, __u8 data)
while (!req.complete)
pmu_poll();
}
-#endif /* CONFIG_ADB_PMU68K */
+#endif /* CONFIG_ADB_PMU */
/*
* VIA PRAM/RTC access routines
@@ -367,38 +367,6 @@ static void cuda_shutdown(void)
}
#endif /* CONFIG_ADB_CUDA */
-#ifdef CONFIG_ADB_PMU68K
-
-void pmu_restart(void)
-{
- struct adb_request req;
- if (pmu_request(&req, NULL,
- 2, PMU_SET_INTR_MASK, PMU_INT_ADB|PMU_INT_TICK) < 0)
- return;
- while (!req.complete)
- pmu_poll();
- if (pmu_request(&req, NULL, 1, PMU_RESET) < 0)
- return;
- while (!req.complete)
- pmu_poll();
-}
-
-void pmu_shutdown(void)
-{
- struct adb_request req;
- if (pmu_request(&req, NULL,
- 2, PMU_SET_INTR_MASK, PMU_INT_ADB|PMU_INT_TICK) < 0)
- return;
- while (!req.complete)
- pmu_poll();
- if (pmu_request(&req, NULL, 5, PMU_SHUTDOWN, 'M', 'A', 'T', 'T') < 0)
- return;
- while (!req.complete)
- pmu_poll();
-}
-
-#endif
-
/*
*-------------------------------------------------------------------
* Below this point are the generic routines; they'll dispatch to the
@@ -423,7 +391,7 @@ void mac_pram_read(int offset, __u8 *buffer, int len)
func = cuda_read_pram;
break;
#endif
-#ifdef CONFIG_ADB_PMU68K
+#ifdef CONFIG_ADB_PMU
case MAC_ADB_PB2:
func = pmu_read_pram;
break;
@@ -453,7 +421,7 @@ void mac_pram_write(int offset, __u8 *buffer, int len)
func = cuda_write_pram;
break;
#endif
-#ifdef CONFIG_ADB_PMU68K
+#ifdef CONFIG_ADB_PMU
case MAC_ADB_PB2:
func = pmu_write_pram;
break;
@@ -477,7 +445,7 @@ void mac_poweroff(void)
macintosh_config->adb_type == MAC_ADB_CUDA) {
cuda_shutdown();
#endif
-#ifdef CONFIG_ADB_PMU68K
+#ifdef CONFIG_ADB_PMU
} else if (macintosh_config->adb_type == MAC_ADB_PB2) {
pmu_shutdown();
#endif
@@ -518,7 +486,7 @@ void mac_reset(void)
macintosh_config->adb_type == MAC_ADB_CUDA) {
cuda_restart();
#endif
-#ifdef CONFIG_ADB_PMU68K
+#ifdef CONFIG_ADB_PMU
} else if (macintosh_config->adb_type == MAC_ADB_PB2) {
pmu_restart();
#endif
@@ -670,7 +638,7 @@ int mac_hwclk(int op, struct rtc_time *t)
now = cuda_read_time();
break;
#endif
-#ifdef CONFIG_ADB_PMU68K
+#ifdef CONFIG_ADB_PMU
case MAC_ADB_PB2:
now = pmu_read_time();
break;
@@ -706,7 +674,7 @@ int mac_hwclk(int op, struct rtc_time *t)
cuda_write_time(now);
break;
#endif
-#ifdef CONFIG_ADB_PMU68K
+#ifdef CONFIG_ADB_PMU
case MAC_ADB_PB2:
pmu_write_time(now);
break;
diff --git a/drivers/macintosh/Kconfig b/drivers/macintosh/Kconfig
index 26abae4c899d..47c350cdfb12 100644
--- a/drivers/macintosh/Kconfig
+++ b/drivers/macintosh/Kconfig
@@ -39,17 +39,6 @@ config ADB_IOP
<http://www.angelfire.com/ca2/dev68k/iopdesc.html> to enable direct
support for it, say 'Y' here.
-config ADB_PMU68K
- bool "Include PMU (Powerbook) ADB driver"
- depends on ADB && MAC
- help
- Say Y here if want your kernel to support the m68k based Powerbooks.
- This includes the PowerBook 140, PowerBook 145, PowerBook 150,
- PowerBook 160, PowerBook 165, PowerBook 165c, PowerBook 170,
- PowerBook 180, PowerBook, 180c, PowerBook 190cs, PowerBook 520,
- PowerBook Duo 210, PowerBook Duo 230, PowerBook Duo 250,
- PowerBook Duo 270c, PowerBook Duo 280 and PowerBook Duo 280c.
-
# we want to change this to something like CONFIG_SYSCTRL_CUDA/PMU
config ADB_CUDA
bool "Support for Cuda/Egret based Macs and PowerMacs"
@@ -66,7 +55,7 @@ config ADB_CUDA
config ADB_PMU
bool "Support for PMU based PowerMacs and PowerBooks"
- depends on PPC_PMAC
+ depends on PPC_PMAC || MAC
help
On PowerBooks, iBooks, and recent iMacs and Power Macintoshes, the
PMU is an embedded microprocessor whose primary function is to
diff --git a/drivers/macintosh/Makefile b/drivers/macintosh/Makefile
index ee803638e595..49819b1b6f20 100644
--- a/drivers/macintosh/Makefile
+++ b/drivers/macintosh/Makefile
@@ -22,7 +22,6 @@ obj-$(CONFIG_PMAC_SMU) += smu.o
obj-$(CONFIG_ADB) += adb.o
obj-$(CONFIG_ADB_MACII) += via-macii.o
obj-$(CONFIG_ADB_IOP) += adb-iop.o
-obj-$(CONFIG_ADB_PMU68K) += via-pmu68k.o
obj-$(CONFIG_ADB_MACIO) += macio-adb.o
obj-$(CONFIG_THERM_WINDTUNNEL) += therm_windtunnel.o
diff --git a/drivers/macintosh/adb.c b/drivers/macintosh/adb.c
index 4c8097e0e6fe..76e98f0f7a3e 100644
--- a/drivers/macintosh/adb.c
+++ b/drivers/macintosh/adb.c
@@ -65,7 +65,7 @@ static struct adb_driver *adb_driver_list[] = {
#ifdef CONFIG_ADB_IOP
&adb_iop_driver,
#endif
-#if defined(CONFIG_ADB_PMU) || defined(CONFIG_ADB_PMU68K)
+#ifdef CONFIG_ADB_PMU
&via_pmu_driver,
#endif
#ifdef CONFIG_ADB_MACIO
diff --git a/drivers/macintosh/via-pmu68k.c b/drivers/macintosh/via-pmu68k.c
deleted file mode 100644
index bec8e1837d7d..000000000000
--- a/drivers/macintosh/via-pmu68k.c
+++ /dev/null
@@ -1,846 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Device driver for the PMU on 68K-based Apple PowerBooks
- *
- * The VIA (versatile interface adapter) interfaces to the PMU,
- * a 6805 microprocessor core whose primary function is to control
- * battery charging and system power on the PowerBooks.
- * The PMU also controls the ADB (Apple Desktop Bus) which connects
- * to the keyboard and mouse, as well as the non-volatile RAM
- * and the RTC (real time clock) chip.
- *
- * Adapted for 68K PMU by Joshua M. Thompson
- *
- * Based largely on the PowerMac PMU code by Paul Mackerras and
- * Fabio Riccardi.
- *
- * Also based on the PMU driver from MkLinux by Apple Computer, Inc.
- * and the Open Software Foundation, Inc.
- */
-
-#include <stdarg.h>
-#include <linux/types.h>
-#include <linux/errno.h>
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/miscdevice.h>
-#include <linux/blkdev.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-
-#include <linux/adb.h>
-#include <linux/pmu.h>
-#include <linux/cuda.h>
-
-#include <asm/macintosh.h>
-#include <asm/macints.h>
-#include <asm/mac_via.h>
-
-#include <asm/pgtable.h>
-#include <asm/irq.h>
-#include <linux/uaccess.h>
-
-/* Misc minor number allocated for /dev/pmu */
-#define PMU_MINOR 154
-
-/* VIA registers - spaced 0x200 bytes apart */
-#define RS 0x200 /* skip between registers */
-#define B 0 /* B-side data */
-#define A RS /* A-side data */
-#define DIRB (2*RS) /* B-side direction (1=output) */
-#define DIRA (3*RS) /* A-side direction (1=output) */
-#define T1CL (4*RS) /* Timer 1 ctr/latch (low 8 bits) */
-#define T1CH (5*RS) /* Timer 1 counter (high 8 bits) */
-#define T1LL (6*RS) /* Timer 1 latch (low 8 bits) */
-#define T1LH (7*RS) /* Timer 1 latch (high 8 bits) */
-#define T2CL (8*RS) /* Timer 2 ctr/latch (low 8 bits) */
-#define T2CH (9*RS) /* Timer 2 counter (high 8 bits) */
-#define SR (10*RS) /* Shift register */
-#define ACR (11*RS) /* Auxiliary control register */
-#define PCR (12*RS) /* Peripheral control register */
-#define IFR (13*RS) /* Interrupt flag register */
-#define IER (14*RS) /* Interrupt enable register */
-#define ANH (15*RS) /* A-side data, no handshake */
-
-/* Bits in B data register: both active low */
-#define TACK 0x02 /* Transfer acknowledge (input) */
-#define TREQ 0x04 /* Transfer request (output) */
-
-/* Bits in ACR */
-#define SR_CTRL 0x1c /* Shift register control bits */
-#define SR_EXT 0x0c /* Shift on external clock */
-#define SR_OUT 0x10 /* Shift out if 1 */
-
-/* Bits in IFR and IER */
-#define SR_INT 0x04 /* Shift register full/empty */
-#define CB1_INT 0x10 /* transition on CB1 input */
-
-static enum pmu_state {
- idle,
- sending,
- intack,
- reading,
- reading_intr,
-} pmu_state;
-
-static struct adb_request *current_req;
-static struct adb_request *last_req;
-static struct adb_request *req_awaiting_reply;
-static unsigned char interrupt_data[32];
-static unsigned char *reply_ptr;
-static int data_index;
-static int data_len;
-static int adb_int_pending;
-static int pmu_adb_flags;
-static int adb_dev_map;
-static struct adb_request bright_req_1, bright_req_2, bright_req_3;
-static int pmu_kind = PMU_UNKNOWN;
-static int pmu_fully_inited;
-
-int asleep;
-
-static int pmu_probe(void);
-static int pmu_init(void);
-static void pmu_start(void);
-static irqreturn_t pmu_interrupt(int irq, void *arg);
-static int pmu_send_request(struct adb_request *req, int sync);
-static int pmu_autopoll(int devs);
-void pmu_poll(void);
-static int pmu_reset_bus(void);
-
-static int init_pmu(void);
-static void pmu_start(void);
-static void send_byte(int x);
-static void recv_byte(void);
-static void pmu_done(struct adb_request *req);
-static void pmu_handle_data(unsigned char *data, int len);
-static void set_volume(int level);
-static void pmu_enable_backlight(int on);
-static void pmu_set_brightness(int level);
-
-struct adb_driver via_pmu_driver = {
- .name = "68K PMU",
- .probe = pmu_probe,
- .init = pmu_init,
- .send_request = pmu_send_request,
- .autopoll = pmu_autopoll,
- .poll = pmu_poll,
- .reset_bus = pmu_reset_bus,
-};
-
-/*
- * This table indicates for each PMU opcode:
- * - the number of data bytes to be sent with the command, or -1
- * if a length byte should be sent,
- * - the number of response bytes which the PMU will return, or
- * -1 if it will send a length byte.
- */
-static s8 pmu_data_len[256][2] = {
-/* 0 1 2 3 4 5 6 7 */
-/*00*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
-/*08*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
-/*10*/ { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
-/*18*/ { 0, 1},{ 0, 1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{ 0, 0},
-/*20*/ {-1, 0},{ 0, 0},{ 2, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},
-/*28*/ { 0,-1},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{ 0,-1},
-/*30*/ { 4, 0},{20, 0},{-1, 0},{ 3, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
-/*38*/ { 0, 4},{ 0,20},{ 2,-1},{ 2, 1},{ 3,-1},{-1,-1},{-1,-1},{ 4, 0},
-/*40*/ { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
-/*48*/ { 0, 1},{ 0, 1},{-1,-1},{ 1, 0},{ 1, 0},{-1,-1},{-1,-1},{-1,-1},
-/*50*/ { 1, 0},{ 0, 0},{ 2, 0},{ 2, 0},{-1, 0},{ 1, 0},{ 3, 0},{ 1, 0},
-/*58*/ { 0, 1},{ 1, 0},{ 0, 2},{ 0, 2},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},
-/*60*/ { 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
-/*68*/ { 0, 3},{ 0, 3},{ 0, 2},{ 0, 8},{ 0,-1},{ 0,-1},{-1,-1},{-1,-1},
-/*70*/ { 1, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
-/*78*/ { 0,-1},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},{ 5, 1},{ 4, 1},{ 4, 1},
-/*80*/ { 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
-/*88*/ { 0, 5},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
-/*90*/ { 1, 0},{ 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
-/*98*/ { 0, 1},{ 0, 1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
-/*a0*/ { 2, 0},{ 2, 0},{ 2, 0},{ 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0},
-/*a8*/ { 1, 1},{ 1, 0},{ 3, 0},{ 2, 0},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
-/*b0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
-/*b8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
-/*c0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
-/*c8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
-/*d0*/ { 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
-/*d8*/ { 1, 1},{ 1, 1},{-1,-1},{-1,-1},{ 0, 1},{ 0,-1},{-1,-1},{-1,-1},
-/*e0*/ {-1, 0},{ 4, 0},{ 0, 1},{-1, 0},{-1, 0},{ 4, 0},{-1, 0},{-1, 0},
-/*e8*/ { 3,-1},{-1,-1},{ 0, 1},{-1,-1},{ 0,-1},{-1,-1},{-1,-1},{ 0, 0},
-/*f0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
-/*f8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
-};
-
-int __init find_via_pmu(void)
-{
- switch (macintosh_config->adb_type) {
- case MAC_ADB_PB2:
- pmu_kind = PMU_68K_V2;
- break;
- default:
- pmu_kind = PMU_UNKNOWN;
- return -ENODEV;
- }
-
- pmu_state = idle;
-
- if (!init_pmu())
- goto fail_init;
-
- pr_info("adb: PMU 68K driver v0.5 for Unified ADB\n");
-
- return 1;
-
-fail_init:
- pmu_kind = PMU_UNKNOWN;
- return 0;
-}
-
-static int pmu_probe(void)
-{
- if (pmu_kind == PMU_UNKNOWN)
- return -ENODEV;
- return 0;
-}
-
-static int pmu_init(void)
-{
- if (pmu_kind == PMU_UNKNOWN)
- return -ENODEV;
- return 0;
-}
-
-static int __init via_pmu_start(void)
-{
- if (pmu_kind == PMU_UNKNOWN)
- return -ENODEV;
-
- if (request_irq(IRQ_MAC_ADB_SR, pmu_interrupt, 0, "PMU_SR",
- pmu_interrupt)) {
- pr_err("%s: can't get SR irq\n", __func__);
- return -ENODEV;
- }
- if (request_irq(IRQ_MAC_ADB_CL, pmu_interrupt, 0, "PMU_CL",
- pmu_interrupt)) {
- pr_err("%s: can't get CL irq\n", __func__);
- free_irq(IRQ_MAC_ADB_SR, pmu_interrupt);
- return -ENODEV;
- }
-
- pmu_fully_inited = 1;
-
- /* Enable backlight */
- pmu_enable_backlight(1);
-
- return 0;
-}
-
-arch_initcall(via_pmu_start);
-
-static int __init init_pmu(void)
-{
- int timeout;
- volatile struct adb_request req;
-
- via2[B] |= TREQ; /* negate TREQ */
- via2[DIRB] = (via2[DIRB] | TREQ) & ~TACK; /* TACK in, TREQ out */
-
- pmu_request((struct adb_request *) &req, NULL, 2, PMU_SET_INTR_MASK, PMU_INT_ADB);
- timeout = 100000;
- while (!req.complete) {
- if (--timeout < 0) {
- printk(KERN_ERR "pmu_init: no response from PMU\n");
- return -EAGAIN;
- }
- udelay(10);
- pmu_poll();
- }
-
- /* ack all pending interrupts */
- timeout = 100000;
- interrupt_data[0] = 1;
- while (interrupt_data[0] || pmu_state != idle) {
- if (--timeout < 0) {
- printk(KERN_ERR "pmu_init: timed out acking intrs\n");
- return -EAGAIN;
- }
- if (pmu_state == idle) {
- adb_int_pending = 1;
- pmu_interrupt(0, NULL);
- }
- pmu_poll();
- udelay(10);
- }
-
- pmu_request((struct adb_request *) &req, NULL, 2, PMU_SET_INTR_MASK,
- PMU_INT_ADB_AUTO|PMU_INT_SNDBRT|PMU_INT_ADB);
- timeout = 100000;
- while (!req.complete) {
- if (--timeout < 0) {
- printk(KERN_ERR "pmu_init: no response from PMU\n");
- return -EAGAIN;
- }
- udelay(10);
- pmu_poll();
- }
-
- bright_req_1.complete = 1;
- bright_req_2.complete = 1;
- bright_req_3.complete = 1;
-
- return 1;
-}
-
-int
-pmu_get_model(void)
-{
- return pmu_kind;
-}
-
-/* Send an ADB command */
-static int
-pmu_send_request(struct adb_request *req, int sync)
-{
- int i, ret;
-
- if (!pmu_fully_inited)
- {
- req->complete = 1;
- return -ENXIO;
- }
-
- ret = -EINVAL;
-
- switch (req->data[0]) {
- case PMU_PACKET:
- for (i = 0; i < req->nbytes - 1; ++i)
- req->data[i] = req->data[i+1];
- --req->nbytes;
- if (pmu_data_len[req->data[0]][1] != 0) {
- req->reply[0] = ADB_RET_OK;
- req->reply_len = 1;
- } else
- req->reply_len = 0;
- ret = pmu_queue_request(req);
- break;
- case CUDA_PACKET:
- switch (req->data[1]) {
- case CUDA_GET_TIME:
- if (req->nbytes != 2)
- break;
- req->data[0] = PMU_READ_RTC;
- req->nbytes = 1;
- req->reply_len = 3;
- req->reply[0] = CUDA_PACKET;
- req->reply[1] = 0;
- req->reply[2] = CUDA_GET_TIME;
- ret = pmu_queue_request(req);
- break;
- case CUDA_SET_TIME:
- if (req->nbytes != 6)
- break;
- req->data[0] = PMU_SET_RTC;
- req->nbytes = 5;
- for (i = 1; i <= 4; ++i)
- req->data[i] = req->data[i+1];
- req->reply_len = 3;
- req->reply[0] = CUDA_PACKET;
- req->reply[1] = 0;
- req->reply[2] = CUDA_SET_TIME;
- ret = pmu_queue_request(req);
- break;
- case CUDA_GET_PRAM:
- if (req->nbytes != 4)
- break;
- req->data[0] = PMU_READ_NVRAM;
- req->data[1] = req->data[2];
- req->data[2] = req->data[3];
- req->nbytes = 3;
- req->reply_len = 3;
- req->reply[0] = CUDA_PACKET;
- req->reply[1] = 0;
- req->reply[2] = CUDA_GET_PRAM;
- ret = pmu_queue_request(req);
- break;
- case CUDA_SET_PRAM:
- if (req->nbytes != 5)
- break;
- req->data[0] = PMU_WRITE_NVRAM;
- req->data[1] = req->data[2];
- req->data[2] = req->data[3];
- req->data[3] = req->data[4];
- req->nbytes = 4;
- req->reply_len = 3;
- req->reply[0] = CUDA_PACKET;
- req->reply[1] = 0;
- req->reply[2] = CUDA_SET_PRAM;
- ret = pmu_queue_request(req);
- break;
- }
- break;
- case ADB_PACKET:
- for (i = req->nbytes - 1; i > 1; --i)
- req->data[i+2] = req->data[i];
- req->data[3] = req->nbytes - 2;
- req->data[2] = pmu_adb_flags;
- /*req->data[1] = req->data[1];*/
- req->data[0] = PMU_ADB_CMD;
- req->nbytes += 2;
- req->reply_expected = 1;
- req->reply_len = 0;
- ret = pmu_queue_request(req);
- break;
- }
- if (ret)
- {
- req->complete = 1;
- return ret;
- }
-
- if (sync) {
- while (!req->complete)
- pmu_poll();
- }
-
- return 0;
-}
-
-/* Enable/disable autopolling */
-static int
-pmu_autopoll(int devs)
-{
- struct adb_request req;
-
- if (!pmu_fully_inited) return -ENXIO;
-
- if (devs) {
- adb_dev_map = devs;
- pmu_request(&req, NULL, 5, PMU_ADB_CMD, 0, 0x86,
- adb_dev_map >> 8, adb_dev_map);
- pmu_adb_flags = 2;
- } else {
- pmu_request(&req, NULL, 1, PMU_ADB_POLL_OFF);
- pmu_adb_flags = 0;
- }
- while (!req.complete)
- pmu_poll();
- return 0;
-}
-
-/* Reset the ADB bus */
-static int
-pmu_reset_bus(void)
-{
- struct adb_request req;
- long timeout;
- int save_autopoll = adb_dev_map;
-
- if (!pmu_fully_inited) return -ENXIO;
-
- /* anyone got a better idea?? */
- pmu_autopoll(0);
-
- req.nbytes = 5;
- req.done = NULL;
- req.data[0] = PMU_ADB_CMD;
- req.data[1] = 0;
- req.data[2] = 3; /* ADB_BUSRESET ??? */
- req.data[3] = 0;
- req.data[4] = 0;
- req.reply_len = 0;
- req.reply_expected = 1;
- if (pmu_queue_request(&req) != 0)
- {
- printk(KERN_ERR "pmu_adb_reset_bus: pmu_queue_request failed\n");
- return -EIO;
- }
- while (!req.complete)
- pmu_poll();
- timeout = 100000;
- while (!req.complete) {
- if (--timeout < 0) {
- printk(KERN_ERR "pmu_adb_reset_bus (reset): no response from PMU\n");
- return -EIO;
- }
- udelay(10);
- pmu_poll();
- }
-
- if (save_autopoll != 0)
- pmu_autopoll(save_autopoll);
-
- return 0;
-}
-
-/* Construct and send a pmu request */
-int
-pmu_request(struct adb_request *req, void (*done)(struct adb_request *),
- int nbytes, ...)
-{
- va_list list;
- int i;
-
- if (nbytes < 0 || nbytes > 32) {
- printk(KERN_ERR "pmu_request: bad nbytes (%d)\n", nbytes);
- req->complete = 1;
- return -EINVAL;
- }
- req->nbytes = nbytes;
- req->done = done;
- va_start(list, nbytes);
- for (i = 0; i < nbytes; ++i)
- req->data[i] = va_arg(list, int);
- va_end(list);
- if (pmu_data_len[req->data[0]][1] != 0) {
- req->reply[0] = ADB_RET_OK;
- req->reply_len = 1;
- } else
- req->reply_len = 0;
- req->reply_expected = 0;
- return pmu_queue_request(req);
-}
-
-int
-pmu_queue_request(struct adb_request *req)
-{
- unsigned long flags;
- int nsend;
-
- if (req->nbytes <= 0) {
- req->complete = 1;
- return 0;
- }
- nsend = pmu_data_len[req->data[0]][0];
- if (nsend >= 0 && req->nbytes != nsend + 1) {
- req->complete = 1;
- return -EINVAL;
- }
-
- req->next = NULL;
- req->sent = 0;
- req->complete = 0;
- local_irq_save(flags);
-
- if (current_req != 0) {
- last_req->next = req;
- last_req = req;
- } else {
- current_req = req;
- last_req = req;
- if (pmu_state == idle)
- pmu_start();
- }
-
- local_irq_restore(flags);
- return 0;
-}
-
-static void
-send_byte(int x)
-{
- via1[ACR] |= SR_CTRL;
- via1[SR] = x;
- via2[B] &= ~TREQ; /* assert TREQ */
-}
-
-static void
-recv_byte(void)
-{
- char c;
-
- via1[ACR] = (via1[ACR] | SR_EXT) & ~SR_OUT;
- c = via1[SR]; /* resets SR */
- via2[B] &= ~TREQ;
-}
-
-static void
-pmu_start(void)
-{
- unsigned long flags;
- struct adb_request *req;
-
- /* assert pmu_state == idle */
- /* get the packet to send */
- local_irq_save(flags);
- req = current_req;
- if (req == 0 || pmu_state != idle
- || (req->reply_expected && req_awaiting_reply))
- goto out;
-
- pmu_state = sending;
- data_index = 1;
- data_len = pmu_data_len[req->data[0]][0];
-
- /* set the shift register to shift out and send a byte */
- send_byte(req->data[0]);
-
-out:
- local_irq_restore(flags);
-}
-
-void
-pmu_poll(void)
-{
- unsigned long flags;
-
- local_irq_save(flags);
- if (via1[IFR] & SR_INT) {
- via1[IFR] = SR_INT;
- pmu_interrupt(IRQ_MAC_ADB_SR, NULL);
- }
- if (via1[IFR] & CB1_INT) {
- via1[IFR] = CB1_INT;
- pmu_interrupt(IRQ_MAC_ADB_CL, NULL);
- }
- local_irq_restore(flags);
-}
-
-static irqreturn_t
-pmu_interrupt(int irq, void *dev_id)
-{
- struct adb_request *req;
- int timeout, bite = 0; /* to prevent compiler warning */
-
-#if 0
- printk("pmu_interrupt: irq %d state %d acr %02X, b %02X data_index %d/%d adb_int_pending %d\n",
- irq, pmu_state, (uint) via1[ACR], (uint) via2[B], data_index, data_len, adb_int_pending);
-#endif
-
- if (irq == IRQ_MAC_ADB_CL) { /* CB1 interrupt */
- adb_int_pending = 1;
- } else if (irq == IRQ_MAC_ADB_SR) { /* SR interrupt */
- if (via2[B] & TACK) {
- printk(KERN_DEBUG "PMU: SR_INT but ack still high! (%x)\n", via2[B]);
- }
-
- /* if reading grab the byte */
- if ((via1[ACR] & SR_OUT) == 0) bite = via1[SR];
-
- /* reset TREQ and wait for TACK to go high */
- via2[B] |= TREQ;
- timeout = 3200;
- while (!(via2[B] & TACK)) {
- if (--timeout < 0) {
- printk(KERN_ERR "PMU not responding (!ack)\n");
- goto finish;
- }
- udelay(10);
- }
-
- switch (pmu_state) {
- case sending:
- req = current_req;
- if (data_len < 0) {
- data_len = req->nbytes - 1;
- send_byte(data_len);
- break;
- }
- if (data_index <= data_len) {
- send_byte(req->data[data_index++]);
- break;
- }
- req->sent = 1;
- data_len = pmu_data_len[req->data[0]][1];
- if (data_len == 0) {
- pmu_state = idle;
- current_req = req->next;
- if (req->reply_expected)
- req_awaiting_reply = req;
- else
- pmu_done(req);
- } else {
- pmu_state = reading;
- data_index = 0;
- reply_ptr = req->reply + req->reply_len;
- recv_byte();
- }
- break;
-
- case intack:
- data_index = 0;
- data_len = -1;
- pmu_state = reading_intr;
- reply_ptr = interrupt_data;
- recv_byte();
- break;
-
- case reading:
- case reading_intr:
- if (data_len == -1) {
- data_len = bite;
- if (bite > 32)
- printk(KERN_ERR "PMU: bad reply len %d\n",
- bite);
- } else {
- reply_ptr[data_index++] = bite;
- }
- if (data_index < data_len) {
- recv_byte();
- break;
- }
-
- if (pmu_state == reading_intr) {
- pmu_handle_data(interrupt_data, data_index);
- } else {
- req = current_req;
- current_req = req->next;
- req->reply_len += data_index;
- pmu_done(req);
- }
- pmu_state = idle;
-
- break;
-
- default:
- printk(KERN_ERR "pmu_interrupt: unknown state %d?\n",
- pmu_state);
- }
- }
-finish:
- if (pmu_state == idle) {
- if (adb_int_pending) {
- pmu_state = intack;
- send_byte(PMU_INT_ACK);
- adb_int_pending = 0;
- } else if (current_req) {
- pmu_start();
- }
- }
-
-#if 0
- printk("pmu_interrupt: exit state %d acr %02X, b %02X data_index %d/%d adb_int_pending %d\n",
- pmu_state, (uint) via1[ACR], (uint) via2[B], data_index, data_len, adb_int_pending);
-#endif
- return IRQ_HANDLED;
-}
-
-static void
-pmu_done(struct adb_request *req)
-{
- req->complete = 1;
- if (req->done)
- (*req->done)(req);
-}
-
-/* Interrupt data could be the result data from an ADB cmd */
-static void
-pmu_handle_data(unsigned char *data, int len)
-{
- static int show_pmu_ints = 1;
-
- asleep = 0;
- if (len < 1) {
- adb_int_pending = 0;
- return;
- }
- if (data[0] & PMU_INT_ADB) {
- if ((data[0] & PMU_INT_ADB_AUTO) == 0) {
- struct adb_request *req = req_awaiting_reply;
- if (req == 0) {
- printk(KERN_ERR "PMU: extra ADB reply\n");
- return;
- }
- req_awaiting_reply = NULL;
- if (len <= 2)
- req->reply_len = 0;
- else {
- memcpy(req->reply, data + 1, len - 1);
- req->reply_len = len - 1;
- }
- pmu_done(req);
- } else {
- adb_input(data+1, len-1, 1);
- }
- } else {
- if (data[0] == 0x08 && len == 3) {
- /* sound/brightness buttons pressed */
- pmu_set_brightness(data[1] >> 3);
- set_volume(data[2]);
- } else if (show_pmu_ints
- && !(data[0] == PMU_INT_TICK && len == 1)) {
- int i;
- printk(KERN_DEBUG "pmu intr");
- for (i = 0; i < len; ++i)
- printk(" %.2x", data[i]);
- printk("\n");
- }
- }
-}
-
-static int backlight_level = -1;
-static int backlight_enabled = 0;
-
-#define LEVEL_TO_BRIGHT(lev) ((lev) < 1? 0x7f: 0x4a - ((lev) << 1))
-
-static void
-pmu_enable_backlight(int on)
-{
- struct adb_request req;
-
- if (on) {
- /* first call: get current backlight value */
- if (backlight_level < 0) {
- switch(pmu_kind) {
- case PMU_68K_V2:
- pmu_request(&req, NULL, 3, PMU_READ_NVRAM, 0x14, 0xe);
- while (!req.complete)
- pmu_poll();
- printk(KERN_DEBUG "pmu: nvram returned bright: %d\n", (int)req.reply[1]);
- backlight_level = req.reply[1];
- break;
- default:
- backlight_enabled = 0;
- return;
- }
- }
- pmu_request(&req, NULL, 2, PMU_BACKLIGHT_BRIGHT,
- LEVEL_TO_BRIGHT(backlight_level));
- while (!req.complete)
- pmu_poll();
- }
- pmu_request(&req, NULL, 2, PMU_POWER_CTRL,
- PMU_POW_BACKLIGHT | (on ? PMU_POW_ON : PMU_POW_OFF));
- while (!req.complete)
- pmu_poll();
- backlight_enabled = on;
-}
-
-static void
-pmu_set_brightness(int level)
-{
- int bright;
-
- backlight_level = level;
- bright = LEVEL_TO_BRIGHT(level);
- if (!backlight_enabled)
- return;
- if (bright_req_1.complete)
- pmu_request(&bright_req_1, NULL, 2, PMU_BACKLIGHT_BRIGHT,
- bright);
- if (bright_req_2.complete)
- pmu_request(&bright_req_2, NULL, 2, PMU_POWER_CTRL,
- PMU_POW_BACKLIGHT | (bright < 0x7f ? PMU_POW_ON : PMU_POW_OFF));
-}
-
-void
-pmu_enable_irled(int on)
-{
- struct adb_request req;
-
- pmu_request(&req, NULL, 2, PMU_POWER_CTRL, PMU_POW_IRLED |
- (on ? PMU_POW_ON : PMU_POW_OFF));
- while (!req.complete)
- pmu_poll();
-}
-
-static void
-set_volume(int level)
-{
-}
-
-int
-pmu_present(void)
-{
- return (pmu_kind != PMU_UNKNOWN);
-}
diff --git a/include/uapi/linux/pmu.h b/include/uapi/linux/pmu.h
index e128f609281a..97256f90e6df 100644
--- a/include/uapi/linux/pmu.h
+++ b/include/uapi/linux/pmu.h
@@ -94,7 +94,7 @@ enum {
PMU_PADDINGTON_BASED, /* 1999 PowerBook G3 */
PMU_KEYLARGO_BASED, /* Core99 motherboard (PMU99) */
PMU_68K_V1, /* Unused/deprecated */
- PMU_68K_V2, /* 68K PMU, version 2 */
+ PMU_68K_V2, /* Unused/deprecated */
};
/* PMU PMU_POWER_EVENTS commands */
--
2.16.4
^ permalink raw reply related [flat|nested] 20+ messages in thread
* [PATCH v3 10/12] macintosh: Use common code to access RTC
@ 2018-06-13 10:38 ` Finn Thain
0 siblings, 0 replies; 20+ messages in thread
From: Finn Thain @ 2018-06-13 10:38 UTC (permalink / raw)
To: Benjamin Herrenschmidt
Cc: Michael Schmitz, linuxppc-dev, linux-m68k, linux-kernel,
Geert Uytterhoeven, Paul Mackerras, ,
Michael Ellerman
Now that the 68k Mac port has adopted the via-pmu driver, it must access
the PMU RTC using the appropriate command format. The same code can now
be used for both m68k and powerpc.
Replace the RTC code that's duplicated in arch/powerpc and arch/m68k
with common RTC accessors for Cuda and PMU devices.
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Paul Mackerras <paulus@samba.org>,
Cc: Michael Ellerman <mpe@ellerman.id.au>
Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
---
arch/m68k/mac/misc.c | 64 ++---------------------------
arch/powerpc/platforms/powermac/time.c | 74 +---------------------------------
drivers/macintosh/via-cuda.c | 34 ++++++++++++++++
drivers/macintosh/via-pmu.c | 32 +++++++++++++++
include/linux/cuda.h | 3 ++
include/linux/pmu.h | 3 ++
6 files changed, 78 insertions(+), 132 deletions(-)
diff --git a/arch/m68k/mac/misc.c b/arch/m68k/mac/misc.c
index 28090a44fa09..397f9f942a9f 100644
--- a/arch/m68k/mac/misc.c
+++ b/arch/m68k/mac/misc.c
@@ -33,34 +33,6 @@
static void (*rom_reset)(void);
#ifdef CONFIG_ADB_CUDA
-static long cuda_read_time(void)
-{
- struct adb_request req;
- long time;
-
- if (cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_GET_TIME) < 0)
- return 0;
- while (!req.complete)
- cuda_poll();
-
- time = (req.reply[3] << 24) | (req.reply[4] << 16) |
- (req.reply[5] << 8) | req.reply[6];
- return time - RTC_OFFSET;
-}
-
-static void cuda_write_time(long data)
-{
- struct adb_request req;
-
- data += RTC_OFFSET;
- if (cuda_request(&req, NULL, 6, CUDA_PACKET, CUDA_SET_TIME,
- (data >> 24) & 0xFF, (data >> 16) & 0xFF,
- (data >> 8) & 0xFF, data & 0xFF) < 0)
- return;
- while (!req.complete)
- cuda_poll();
-}
-
static __u8 cuda_read_pram(int offset)
{
struct adb_request req;
@@ -86,34 +58,6 @@ static void cuda_write_pram(int offset, __u8 data)
#endif /* CONFIG_ADB_CUDA */
#ifdef CONFIG_ADB_PMU
-static long pmu_read_time(void)
-{
- struct adb_request req;
- long time;
-
- if (pmu_request(&req, NULL, 1, PMU_READ_RTC) < 0)
- return 0;
- while (!req.complete)
- pmu_poll();
-
- time = (req.reply[1] << 24) | (req.reply[2] << 16) |
- (req.reply[3] << 8) | req.reply[4];
- return time - RTC_OFFSET;
-}
-
-static void pmu_write_time(long data)
-{
- struct adb_request req;
-
- data += RTC_OFFSET;
- if (pmu_request(&req, NULL, 5, PMU_SET_RTC,
- (data >> 24) & 0xFF, (data >> 16) & 0xFF,
- (data >> 8) & 0xFF, data & 0xFF) < 0)
- return;
- while (!req.complete)
- pmu_poll();
-}
-
static __u8 pmu_read_pram(int offset)
{
struct adb_request req;
@@ -635,12 +579,12 @@ int mac_hwclk(int op, struct rtc_time *t)
#ifdef CONFIG_ADB_CUDA
case MAC_ADB_EGRET:
case MAC_ADB_CUDA:
- now = cuda_read_time();
+ now = cuda_get_time();
break;
#endif
#ifdef CONFIG_ADB_PMU
case MAC_ADB_PB2:
- now = pmu_read_time();
+ now = pmu_get_time();
break;
#endif
default:
@@ -671,12 +615,12 @@ int mac_hwclk(int op, struct rtc_time *t)
#ifdef CONFIG_ADB_CUDA
case MAC_ADB_EGRET:
case MAC_ADB_CUDA:
- cuda_write_time(now);
+ cuda_set_time(now);
break;
#endif
#ifdef CONFIG_ADB_PMU
case MAC_ADB_PB2:
- pmu_write_time(now);
+ pmu_set_time(now);
break;
#endif
default:
diff --git a/arch/powerpc/platforms/powermac/time.c b/arch/powerpc/platforms/powermac/time.c
index 274af6fa388e..e9c1f3dafe2f 100644
--- a/arch/powerpc/platforms/powermac/time.c
+++ b/arch/powerpc/platforms/powermac/time.c
@@ -42,9 +42,6 @@
#define DBG(x...)
#endif
-/* Apparently the RTC stores seconds since 1 Jan 1904 */
-#define RTC_OFFSET 2082844800
-
/*
* Calibrate the decrementer frequency with the VIA timer 1.
*/
@@ -103,43 +100,8 @@ static unsigned long from_rtc_time(struct rtc_time *tm)
#endif
#ifdef CONFIG_ADB_CUDA
-static unsigned long cuda_get_time(void)
-{
- struct adb_request req;
- unsigned int now;
-
- if (cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_GET_TIME) < 0)
- return 0;
- while (!req.complete)
- cuda_poll();
- if (req.reply_len != 7)
- printk(KERN_ERR "cuda_get_time: got %d byte reply\n",
- req.reply_len);
- now = (req.reply[3] << 24) + (req.reply[4] << 16)
- + (req.reply[5] << 8) + req.reply[6];
- return ((unsigned long)now) - RTC_OFFSET;
-}
-
#define cuda_get_rtc_time(tm) to_rtc_time(cuda_get_time(), (tm))
-
-static int cuda_set_rtc_time(struct rtc_time *tm)
-{
- unsigned int nowtime;
- struct adb_request req;
-
- nowtime = from_rtc_time(tm) + RTC_OFFSET;
- if (cuda_request(&req, NULL, 6, CUDA_PACKET, CUDA_SET_TIME,
- nowtime >> 24, nowtime >> 16, nowtime >> 8,
- nowtime) < 0)
- return -ENXIO;
- while (!req.complete)
- cuda_poll();
- if ((req.reply_len != 3) && (req.reply_len != 7))
- printk(KERN_ERR "cuda_set_rtc_time: got %d byte reply\n",
- req.reply_len);
- return 0;
-}
-
+#define cuda_set_rtc_time(tm) cuda_set_time(from_rtc_time(tm))
#else
#define cuda_get_time() 0
#define cuda_get_rtc_time(tm)
@@ -147,40 +109,8 @@ static int cuda_set_rtc_time(struct rtc_time *tm)
#endif
#ifdef CONFIG_ADB_PMU
-static unsigned long pmu_get_time(void)
-{
- struct adb_request req;
- unsigned int now;
-
- if (pmu_request(&req, NULL, 1, PMU_READ_RTC) < 0)
- return 0;
- pmu_wait_complete(&req);
- if (req.reply_len != 4)
- printk(KERN_ERR "pmu_get_time: got %d byte reply from PMU\n",
- req.reply_len);
- now = (req.reply[0] << 24) + (req.reply[1] << 16)
- + (req.reply[2] << 8) + req.reply[3];
- return ((unsigned long)now) - RTC_OFFSET;
-}
-
#define pmu_get_rtc_time(tm) to_rtc_time(pmu_get_time(), (tm))
-
-static int pmu_set_rtc_time(struct rtc_time *tm)
-{
- unsigned int nowtime;
- struct adb_request req;
-
- nowtime = from_rtc_time(tm) + RTC_OFFSET;
- if (pmu_request(&req, NULL, 5, PMU_SET_RTC, nowtime >> 24,
- nowtime >> 16, nowtime >> 8, nowtime) < 0)
- return -ENXIO;
- pmu_wait_complete(&req);
- if (req.reply_len != 0)
- printk(KERN_ERR "pmu_set_rtc_time: %d byte reply from PMU\n",
- req.reply_len);
- return 0;
-}
-
+#define pmu_set_rtc_time(tm) pmu_set_time(from_rtc_time(tm))
#else
#define pmu_get_time() 0
#define pmu_get_rtc_time(tm)
diff --git a/drivers/macintosh/via-cuda.c b/drivers/macintosh/via-cuda.c
index 019556136e77..8e7fb2115f10 100644
--- a/drivers/macintosh/via-cuda.c
+++ b/drivers/macintosh/via-cuda.c
@@ -771,3 +771,37 @@ cuda_input(unsigned char *buf, int nb)
buf, nb, false);
}
}
+
+/* Offset between Unix time (1970-based) and Mac time (1904-based) */
+#define RTC_OFFSET 2082844800
+
+unsigned long cuda_get_time(void)
+{
+ struct adb_request req;
+ unsigned long now;
+
+ if (cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_GET_TIME) < 0)
+ return 0;
+ while (!req.complete)
+ cuda_poll();
+ if (req.reply_len != 7)
+ pr_err("%s: got %d byte reply\n", __func__, req.reply_len);
+ now = (req.reply[3] << 24) + (req.reply[4] << 16) +
+ (req.reply[5] << 8) + req.reply[6];
+ return now - RTC_OFFSET;
+}
+
+int cuda_set_time(unsigned long now)
+{
+ struct adb_request req;
+
+ now += RTC_OFFSET;
+ if (cuda_request(&req, NULL, 6, CUDA_PACKET, CUDA_SET_TIME,
+ now >> 24, now >> 16, now >> 8, now) < 0)
+ return -ENXIO;
+ while (!req.complete)
+ cuda_poll();
+ if ((req.reply_len != 3) && (req.reply_len != 7))
+ pr_err("%s: got %d byte reply\n", __func__, req.reply_len);
+ return 0;
+}
diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c
index 22cb7d94e3ce..38d7dd0bdb28 100644
--- a/drivers/macintosh/via-pmu.c
+++ b/drivers/macintosh/via-pmu.c
@@ -1820,6 +1820,38 @@ pmu_shutdown(void)
;
}
+/* Offset between Unix time (1970-based) and Mac time (1904-based) */
+#define RTC_OFFSET 2082844800
+
+unsigned long pmu_get_time(void)
+{
+ struct adb_request req;
+ unsigned long now;
+
+ if (pmu_request(&req, NULL, 1, PMU_READ_RTC) < 0)
+ return 0;
+ pmu_wait_complete(&req);
+ if (req.reply_len != 4)
+ pr_err("%s: got %d byte reply\n", __func__, req.reply_len);
+ now = (req.reply[0] << 24) + (req.reply[1] << 16) +
+ (req.reply[2] << 8) + req.reply[3];
+ return now - RTC_OFFSET;
+}
+
+int pmu_set_time(unsigned long now)
+{
+ struct adb_request req;
+
+ now += RTC_OFFSET;
+ if (pmu_request(&req, NULL, 5, PMU_SET_RTC,
+ now >> 24, now >> 16, now >> 8, now) < 0)
+ return -ENXIO;
+ pmu_wait_complete(&req);
+ if (req.reply_len != 0)
+ pr_err("%s: got %d byte reply\n", __func__, req.reply_len);
+ return 0;
+}
+
int
pmu_present(void)
{
diff --git a/include/linux/cuda.h b/include/linux/cuda.h
index 056867f09a01..a68669f746e1 100644
--- a/include/linux/cuda.h
+++ b/include/linux/cuda.h
@@ -16,4 +16,7 @@ extern int cuda_request(struct adb_request *req,
void (*done)(struct adb_request *), int nbytes, ...);
extern void cuda_poll(void);
+extern unsigned long cuda_get_time(void);
+extern int cuda_set_time(unsigned long now);
+
#endif /* _LINUX_CUDA_H */
diff --git a/include/linux/pmu.h b/include/linux/pmu.h
index 9ac8fc60ad49..feefd0bff9cf 100644
--- a/include/linux/pmu.h
+++ b/include/linux/pmu.h
@@ -34,6 +34,9 @@ static inline void pmu_resume(void)
{}
#endif
+extern unsigned long pmu_get_time(void);
+extern int pmu_set_time(unsigned long now);
+
extern void pmu_enable_irled(int on);
extern void pmu_restart(void);
--
2.16.4
^ permalink raw reply related [flat|nested] 20+ messages in thread
* Re: [PATCH v3 00/12] macintosh: Resolve various PMU driver problems
2018-06-13 10:38 [PATCH v3 00/12] macintosh: Resolve various PMU driver problems Finn Thain
` (11 preceding siblings ...)
2018-06-13 10:38 ` [PATCH v3 11/12] macintosh/via-pmu: Clean up interrupt statistics Finn Thain
@ 2018-06-24 11:35 ` Finn Thain
2018-06-27 3:08 ` Michael Ellerman
12 siblings, 1 reply; 20+ messages in thread
From: Finn Thain @ 2018-06-24 11:35 UTC (permalink / raw)
To: Benjamin Herrenschmidt
Cc: Michael Schmitz, linuxppc-dev, linux-m68k, linux-kernel
On Wed, 13 Jun 2018, I wrote:
> Finn Thain (12):
> macintosh/via-pmu: Fix section mismatch warning
> macintosh/via-pmu: Add missing mmio accessors
> macintosh/via-pmu: Don't clear shift register interrupt flag twice
> macintosh/via-pmu: Enhance state machine with new 'uninitialized'
> state
> macintosh/via-pmu: Replace via pointer with via1 and via2 pointers
> macintosh/via-pmu: Add support for m68k PowerBooks
> macintosh/via-pmu: Make CONFIG_PPC_PMAC Kconfig deps explicit
> macintosh/via-pmu68k: Don't load driver on unsupported hardware
> macintosh/via-pmu: Replace via-pmu68k driver with via-pmu driver
> macintosh: Use common code to access RTC
> macintosh/via-pmu: Clean up interrupt statistics
> macintosh/via-pmu: Disambiguate interrupt statistics
>
Patch 10/12 ("macintosh: Use common code to access RTC") conflicts with
Arnd's RTC work, but the rest of this series can still be reviewed and
merged as-is.
I will rewrite patch 10/12 after Arnd's fixes and this series have all
made their way through both powerpc and m68k trees, and submit it
separately.
Thanks.
--
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH v3 00/12] macintosh: Resolve various PMU driver problems
2018-06-24 11:35 ` [PATCH v3 00/12] macintosh: Resolve various PMU driver problems Finn Thain
@ 2018-06-27 3:08 ` Michael Ellerman
2018-06-27 3:27 ` Benjamin Herrenschmidt
0 siblings, 1 reply; 20+ messages in thread
From: Michael Ellerman @ 2018-06-27 3:08 UTC (permalink / raw)
To: Finn Thain, geert
Cc: Benjamin Herrenschmidt, Michael Schmitz, linux-m68k,
linuxppc-dev, linux-kernel
Hi Finn, Geert,
Finn Thain <fthain@telegraphics.com.au> writes:
> On Wed, 13 Jun 2018, I wrote:
>
>> Finn Thain (12):
>> macintosh/via-pmu: Fix section mismatch warning
>> macintosh/via-pmu: Add missing mmio accessors
>> macintosh/via-pmu: Don't clear shift register interrupt flag twice
>> macintosh/via-pmu: Enhance state machine with new 'uninitialized'
>> state
>> macintosh/via-pmu: Replace via pointer with via1 and via2 pointers
>> macintosh/via-pmu: Add support for m68k PowerBooks
>> macintosh/via-pmu: Make CONFIG_PPC_PMAC Kconfig deps explicit
>> macintosh/via-pmu68k: Don't load driver on unsupported hardware
>> macintosh/via-pmu: Replace via-pmu68k driver with via-pmu driver
>> macintosh: Use common code to access RTC
>> macintosh/via-pmu: Clean up interrupt statistics
>> macintosh/via-pmu: Disambiguate interrupt statistics
>>
>
> Patch 10/12 ("macintosh: Use common code to access RTC") conflicts with
> Arnd's RTC work, but the rest of this series can still be reviewed and
> merged as-is.
OK so you're saying we should drop 10/12 for now.
> I will rewrite patch 10/12 after Arnd's fixes and this series have all
> made their way through both powerpc and m68k trees, and submit it
> separately.
drivers/macintosh is supposedly maintained by Ben, but I'm not sure this
series is high on his todo list.
Should it just go in via the m68k tree?
Or I can create a topic branch to share it between ppc and m68k?
cheers
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH v3 00/12] macintosh: Resolve various PMU driver problems
2018-06-27 3:08 ` Michael Ellerman
@ 2018-06-27 3:27 ` Benjamin Herrenschmidt
2018-06-27 5:39 ` Michael Schmitz
0 siblings, 1 reply; 20+ messages in thread
From: Benjamin Herrenschmidt @ 2018-06-27 3:27 UTC (permalink / raw)
To: Michael Ellerman, Finn Thain, geert
Cc: Michael Schmitz, linux-m68k, linuxppc-dev, linux-kernel
On Wed, 2018-06-27 at 13:08 +1000, Michael Ellerman wrote:
> > I will rewrite patch 10/12 after Arnd's fixes and this series have all
> > made their way through both powerpc and m68k trees, and submit it
> > separately.
>
> drivers/macintosh is supposedly maintained by Ben, but I'm not sure this
> series is high on his todo list.
We need at least to pull out a couple of powerbooks we have sitting in
drawers and try it out.
>
> Should it just go in via the m68k tree?
>
> Or I can create a topic branch to share it between ppc and m68k?
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH v3 00/12] macintosh: Resolve various PMU driver problems
2018-06-27 3:27 ` Benjamin Herrenschmidt
@ 2018-06-27 5:39 ` Michael Schmitz
2018-06-27 9:00 ` Gabriel Paubert
0 siblings, 1 reply; 20+ messages in thread
From: Michael Schmitz @ 2018-06-27 5:39 UTC (permalink / raw)
To: Benjamin Herrenschmidt, Michael Ellerman, Finn Thain, geert
Cc: linux-m68k, linuxppc-dev, linux-kernel
Ben,
Am 27.06.2018 um 15:27 schrieb Benjamin Herrenschmidt:
> On Wed, 2018-06-27 at 13:08 +1000, Michael Ellerman wrote:
>>> I will rewrite patch 10/12 after Arnd's fixes and this series have all
>>> made their way through both powerpc and m68k trees, and submit it
>>> separately.
>>
>> drivers/macintosh is supposedly maintained by Ben, but I'm not sure this
>> series is high on his todo list.
>
> We need at least to pull out a couple of powerbooks we have sitting in
> drawers and try it out.
No need to root around in drawers - I'm sitting in front of one (G3
Titanium) writing this. Let me know if that would help (I've forgotten
most of what I knew about powerpc kernels).
Cheers,
Michael
>
>>
>> Should it just go in via the m68k tree?
>>
>> Or I can create a topic branch to share it between ppc and m68k?
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH v3 00/12] macintosh: Resolve various PMU driver problems
2018-06-27 5:39 ` Michael Schmitz
@ 2018-06-27 9:00 ` Gabriel Paubert
2018-06-27 9:14 ` Michael Schmitz
0 siblings, 1 reply; 20+ messages in thread
From: Gabriel Paubert @ 2018-06-27 9:00 UTC (permalink / raw)
To: Michael Schmitz
Cc: Benjamin Herrenschmidt, Michael Ellerman, Finn Thain, geert,
linux-m68k, linuxppc-dev, linux-kernel
On Wed, Jun 27, 2018 at 05:39:15PM +1200, Michael Schmitz wrote:
> Ben,
>
> Am 27.06.2018 um 15:27 schrieb Benjamin Herrenschmidt:
> > On Wed, 2018-06-27 at 13:08 +1000, Michael Ellerman wrote:
> > > > I will rewrite patch 10/12 after Arnd's fixes and this series have all
> > > > made their way through both powerpc and m68k trees, and submit it
> > > > separately.
> > >
> > > drivers/macintosh is supposedly maintained by Ben, but I'm not sure this
> > > series is high on his todo list.
> >
> > We need at least to pull out a couple of powerbooks we have sitting in
> > drawers and try it out.
>
> No need to root around in drawers - I'm sitting in front of one (G3
> Titanium) writing this. Let me know if that would help (I've forgotten most
> of what I knew about powerpc kernels).
A very rare model, all G3 I've seen were plastic, all Titanium were G4 :-)
Cheers,
Gabriel
(still using my Pismo from time to time, but much less since
sleep was broken)
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH v3 00/12] macintosh: Resolve various PMU driver problems
2018-06-27 9:00 ` Gabriel Paubert
@ 2018-06-27 9:14 ` Michael Schmitz
0 siblings, 0 replies; 20+ messages in thread
From: Michael Schmitz @ 2018-06-27 9:14 UTC (permalink / raw)
To: Gabriel Paubert
Cc: Benjamin Herrenschmidt, Michael Ellerman, Finn Thain, geert,
linux-m68k, linuxppc-dev, linux-kernel
Gabriel,
Am 27.06.2018 um 21:00 schrieb Gabriel Paubert:
> On Wed, Jun 27, 2018 at 05:39:15PM +1200, Michael Schmitz wrote:
>> Ben,
>>
>> Am 27.06.2018 um 15:27 schrieb Benjamin Herrenschmidt:
>>> On Wed, 2018-06-27 at 13:08 +1000, Michael Ellerman wrote:
>>>>> I will rewrite patch 10/12 after Arnd's fixes and this series have all
>>>>> made their way through both powerpc and m68k trees, and submit it
>>>>> separately.
>>>>
>>>> drivers/macintosh is supposedly maintained by Ben, but I'm not sure this
>>>> series is high on his todo list.
>>>
>>> We need at least to pull out a couple of powerbooks we have sitting in
>>> drawers and try it out.
>>
>> No need to root around in drawers - I'm sitting in front of one (G3
>> Titanium) writing this. Let me know if that would help (I've forgotten most
>> of what I knew about powerpc kernels).
>
> A very rare model, all G3 I've seen were plastic, all Titanium were G4 :-)
Right you are - the G3 was the earlier one I used (which was stolen from
my office). G4 it is, then.
Cheers,
Michael
>
> Cheers,
> Gabriel
> (still using my Pismo from time to time, but much less since
> sleep was broken)
>
^ permalink raw reply [flat|nested] 20+ messages in thread
end of thread, other threads:[~2018-06-27 9:14 UTC | newest]
Thread overview: 20+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-06-13 10:38 [PATCH v3 00/12] macintosh: Resolve various PMU driver problems Finn Thain
2018-06-13 10:38 ` [PATCH v3 02/12] macintosh/via-pmu: Add missing mmio accessors Finn Thain
2018-06-13 10:38 ` [PATCH v3 08/12] macintosh/via-pmu68k: Don't load driver on unsupported hardware Finn Thain
2018-06-13 10:38 ` [PATCH v3 03/12] macintosh/via-pmu: Don't clear shift register interrupt flag twice Finn Thain
2018-06-13 10:38 ` [PATCH v3 05/12] macintosh/via-pmu: Replace via pointer with via1 and via2 pointers Finn Thain
2018-06-13 10:38 ` [PATCH v3 01/12] macintosh/via-pmu: Fix section mismatch warning Finn Thain
2018-06-13 10:38 ` [PATCH v3 04/12] macintosh/via-pmu: Enhance state machine with new 'uninitialized' state Finn Thain
2018-06-13 10:38 ` [PATCH v3 07/12] macintosh/via-pmu: Make CONFIG_PPC_PMAC Kconfig deps explicit Finn Thain
2018-06-13 10:38 ` [PATCH v3 06/12] macintosh/via-pmu: Add support for m68k PowerBooks Finn Thain
2018-06-13 10:38 ` [PATCH v3 09/12] macintosh/via-pmu: Replace via-pmu68k driver with via-pmu driver Finn Thain
2018-06-13 10:38 ` [PATCH v3 12/12] macintosh/via-pmu: Disambiguate interrupt statistics Finn Thain
2018-06-13 10:38 ` [PATCH v3 10/12] macintosh: Use common code to access RTC Finn Thain
2018-06-13 10:38 ` Finn Thain
2018-06-13 10:38 ` [PATCH v3 11/12] macintosh/via-pmu: Clean up interrupt statistics Finn Thain
2018-06-24 11:35 ` [PATCH v3 00/12] macintosh: Resolve various PMU driver problems Finn Thain
2018-06-27 3:08 ` Michael Ellerman
2018-06-27 3:27 ` Benjamin Herrenschmidt
2018-06-27 5:39 ` Michael Schmitz
2018-06-27 9:00 ` Gabriel Paubert
2018-06-27 9:14 ` Michael Schmitz
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.