+++ /dev/null
-// 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);
-}
projects / openwrt / staging / blogic.git / commitdiff