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-rw-r--r--drivers/macintosh/Kconfig19
-rw-r--r--drivers/macintosh/Makefile1
-rw-r--r--drivers/macintosh/adb.c2
-rw-r--r--drivers/macintosh/via-pmu.c346
-rw-r--r--drivers/macintosh/via-pmu68k.c850
5 files changed, 220 insertions, 998 deletions
diff --git a/drivers/macintosh/Kconfig b/drivers/macintosh/Kconfig
index 97a420c11eed..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"
@@ -65,8 +54,8 @@ config ADB_CUDA
If unsure say Y.
config ADB_PMU
- bool "Support for PMU based PowerMacs"
- depends on PPC_PMAC
+ bool "Support for PMU based PowerMacs and PowerBooks"
+ 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
@@ -79,7 +68,7 @@ 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 +111,7 @@ 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
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-pmu.c b/drivers/macintosh/via-pmu.c
index 25c1ce811053..d72c450aebe5 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"
@@ -76,7 +82,6 @@
#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 */
@@ -98,8 +103,13 @@ static volatile unsigned char __iomem *via;
#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 */
@@ -114,6 +124,7 @@ static volatile unsigned char __iomem *via;
#define CB1_INT 0x10 /* transition on CB1 input */
static volatile enum pmu_state {
+ uninitialized = 0,
idle,
sending,
intack,
@@ -140,11 +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;
@@ -157,7 +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;
@@ -271,10 +288,11 @@ static char *pbook_type[] = {
int __init find_via_pmu(void)
{
+#ifdef CONFIG_PPC_PMAC
u64 taddr;
const u32 *reg;
- if (via)
+ if (pmu_state != uninitialized)
return 1;
vias = of_find_node_by_name(NULL, "via-pmu");
if (vias == NULL)
@@ -339,50 +357,70 @@ 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;
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;
fail_init:
- iounmap(via);
- via = NULL;
+ iounmap(via1);
+ via1 = via2 = NULL;
fail_via_remap:
iounmap(gpio_reg);
gpio_reg = NULL;
fail:
of_node_put(vias);
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
static int pmu_probe(void)
{
- return vias == NULL? -ENODEV: 0;
+ return pmu_state == uninitialized ? -ENODEV : 0;
}
-static int __init pmu_init(void)
+static int pmu_init(void)
{
- if (vias == NULL)
- return -ENODEV;
- return 0;
+ return pmu_state == uninitialized ? -ENODEV : 0;
}
#endif /* CONFIG_ADB */
@@ -395,13 +433,14 @@ static int __init pmu_init(void)
*/
static int __init via_pmu_start(void)
{
- unsigned int irq;
+ unsigned int __maybe_unused irq;
- if (vias == NULL)
+ 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");
@@ -437,7 +476,20 @@ 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);
+#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;
@@ -463,7 +515,7 @@ 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
@@ -534,8 +586,9 @@ 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(&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;
@@ -587,6 +640,10 @@ 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 +682,7 @@ 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 +764,7 @@ 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);
}
@@ -816,9 +875,9 @@ static int pmu_info_proc_show(struct seq_file *m, void *v)
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",
@@ -827,10 +886,12 @@ 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]);
}
@@ -928,7 +989,7 @@ 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;
}
@@ -1022,7 +1083,7 @@ 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;
@@ -1035,7 +1096,7 @@ 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?? */
@@ -1071,7 +1132,7 @@ 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) {
@@ -1096,7 +1157,7 @@ pmu_queue_request(struct adb_request *req)
unsigned long flags;
int nsend;
- if (via == NULL) {
+ if (pmu_state == uninitialized) {
req->complete = 1;
return -ENXIO;
}
@@ -1136,7 +1197,7 @@ 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;
@@ -1150,23 +1211,19 @@ 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
@@ -1209,7 +1266,7 @@ pmu_start(void)
void
pmu_poll(void)
{
- if (!via)
+ if (pmu_state == uninitialized)
return;
if (disable_poll)
return;
@@ -1219,7 +1276,7 @@ pmu_poll(void)
void
pmu_poll_adb(void)
{
- if (!via)
+ if (pmu_state == uninitialized)
return;
if (disable_poll)
return;
@@ -1234,7 +1291,7 @@ 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);
@@ -1250,7 +1307,7 @@ pmu_suspend(void)
{
unsigned long flags;
- if (!via)
+ if (pmu_state == uninitialized)
return;
spin_lock_irqsave(&pmu_lock, flags);
@@ -1269,7 +1326,7 @@ 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;
}
@@ -1281,7 +1338,7 @@ 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);
@@ -1293,7 +1350,7 @@ 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();
}
@@ -1302,7 +1359,8 @@ 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;
@@ -1324,25 +1382,24 @@ 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) {
@@ -1358,6 +1415,7 @@ next:
}
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) {
@@ -1365,6 +1423,7 @@ next:
return;
}
}
+#endif /* CONFIG_XMON */
#ifdef CONFIG_ADB
/*
* XXX On the [23]400 the PMU gives us an up
@@ -1378,25 +1437,28 @@ next:
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);
@@ -1406,7 +1468,9 @@ next:
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;
@@ -1418,21 +1482,20 @@ 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]);
- out_8(&via[IFR], SR_INT);
+ 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) {
@@ -1533,26 +1596,46 @@ via_pmu_interrupt(int irq, void *arg)
++disable_poll;
for (;;) {
- intr = in_8(&via[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;
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);
if (intr & CB1_INT) {
adb_int_pending = 1;
- pmu_irq_stats[0]++;
+ pmu_irq_stats[11]++;
}
if (intr & SR_INT) {
req = pmu_sr_intr();
if (req)
break;
}
+#ifndef CONFIG_PPC_PMAC
+ break;
+#endif
}
recheck:
@@ -1619,7 +1702,7 @@ pmu_unlock(void)
}
-static irqreturn_t
+static __maybe_unused irqreturn_t
gpio1_interrupt(int irq, void *arg)
{
unsigned long flags;
@@ -1630,7 +1713,7 @@ 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);
@@ -1644,7 +1727,7 @@ pmu_enable_irled(int on)
{
struct adb_request req;
- if (vias == NULL)
+ if (pmu_state == uninitialized)
return ;
if (pmu_kind == PMU_KEYLARGO_BASED)
return ;
@@ -1659,7 +1742,7 @@ pmu_restart(void)
{
struct adb_request req;
- if (via == NULL)
+ if (pmu_state == uninitialized)
return;
local_irq_disable();
@@ -1684,7 +1767,7 @@ pmu_shutdown(void)
{
struct adb_request req;
- if (via == NULL)
+ if (pmu_state == uninitialized)
return;
local_irq_disable();
@@ -1712,7 +1795,7 @@ pmu_shutdown(void)
int
pmu_present(void)
{
- return via != NULL;
+ return pmu_state != uninitialized;
}
#if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32)
@@ -1725,29 +1808,29 @@ 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)
@@ -2253,6 +2336,7 @@ 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;
@@ -2262,6 +2346,7 @@ 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 */
@@ -2378,7 +2463,7 @@ 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");
@@ -2389,33 +2474,33 @@ 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;
}
@@ -2424,7 +2509,6 @@ 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];
@@ -2436,21 +2520,21 @@ 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);
diff --git a/drivers/macintosh/via-pmu68k.c b/drivers/macintosh/via-pmu68k.c
deleted file mode 100644
index d545ed45e482..000000000000
--- a/drivers/macintosh/via-pmu68k.c
+++ /dev/null
@@ -1,850 +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_PB1:
- pmu_kind = PMU_68K_V1;
- break;
- 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_V1:
- 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);
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-09 13:17:25 +0000