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macintosh/via-pmu: Replace via-pmu68k driver with via-pmu driver 

Now that the PowerMac via-pmu driver supports m68k PowerBooks,
switch over to that driver and remove the via-pmu68k driver.

Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
hifive-unleashed-5.1
Finn Thain 2018-07-02 04:21:19 -04:00 committed by Michael Ellerman
parent 54c990775f
commit ebd722275f
9 changed files with 14 additions and 904 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/m68k/configs/mac_defconfig
View File

@ -369,7 +369,7 @@ 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

2
arch/m68k/configs/multi_defconfig
View File

@ -402,7 +402,7 @@ 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

2
arch/m68k/mac/config.c
View File

@ -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
}

48
arch/m68k/mac/misc.c
View File

@ -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;

13
drivers/macintosh/Kconfig
View File

@ -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

1
drivers/macintosh/Makefile
View File

@ -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

2
drivers/macintosh/adb.c
View File

@ -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

846
drivers/macintosh/via-pmu68k.c
View File

@ -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);
}

2
include/uapi/linux/pmu.h
View File

@ -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 */