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qmk_firmware/keyboards/infinity60/led_controller.c

355 lines
11 KiB
C

/*
Copyright 2016 flabbergast <s3+flabbergast@sdfeu.org>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* LED controller code
* WF uses IS31FL3731C matrix LED driver from ISSI
* datasheet: http://www.issi.com/WW/pdf/31FL3731C.pdf
*/
#include "ch.h"
#include "hal.h"
#include "led_controller.h"
#include "hook.h"
#include "suspend.h"
#include "usb_main.h"
/* WF LED MAP
- digits mean "row" and "col", i.e. 45 means C4-5 in the IS31 datasheet, matrix A
11 12 13 14 15 16 17 18 21 22 23 24 25 26 27 28
31 32 33 34 35 36 37 38 41 42 43 44 45 46 47
48 51 52 53 54 55 56 57 58 61 62 63 64 65 66
67 68 71 72 73 74 75 76 77 78 81 82 83 84 85
86 87 88 91 92 93 (94) 95 96 97
*/
/*
each page has 0xB4 bytes
0 - 0x11: LED control (on/off):
order: CA1, CB1, CA2, CB2, .... (CA - matrix A, CB - matrix B)
CAn controls Cn-8 .. Cn-1 (LSbit)
0x12 - 0x23: blink control (like "LED control")
0x24 - 0xB3: PWM control: byte per LED, 0xFF max on
order same as above (CA 1st row (8bytes), CB 1st row (8bytes), ...)
*/
/* Which LED should be used for CAPS LOCK indicator
* The usual Caps Lock position is C4-8, so the address is
* 0x24 + (4-1)*0x10 + (8-1) = 0x5B */
#if !defined(CAPS_LOCK_LED_ADDRESS)
#define CAPS_LOCK_LED_ADDRESS 0x5B
#endif
/* Which LED should breathe during sleep */
#if !defined(BREATHE_LED_ADDRESS)
#define BREATHE_LED_ADDRESS CAPS_LOCK_LED_ADDRESS
#endif
/* =================
* ChibiOS I2C setup
* ================= */
static const I2CConfig i2ccfg = {
400000 // clock speed (Hz); 400kHz max for IS31
};
/* ==============
* variables
* ============== */
// internal communication buffers
uint8_t tx[2] __attribute__((aligned(2)));
uint8_t rx[1] __attribute__((aligned(2)));
// buffer for sending the whole page at once (used also as a temp buffer)
uint8_t full_page[0xB4+1] = {0};
// LED mask (which LEDs are present, selected by bits)
const uint8_t is31_wf_leds_mask[0x12] = {
0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF,
0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0x7F, 0x00
};
/* ============================
* communication functions
* ============================ */
msg_t is31_select_page(uint8_t page) {
tx[0] = IS31_COMMANDREGISTER;
tx[1] = page;
return i2cMasterTransmitTimeout(&I2CD1, IS31_ADDR_DEFAULT, tx, 2, NULL, 0, US2ST(IS31_TIMEOUT));
}
msg_t is31_write_data(uint8_t page, uint8_t *buffer, uint8_t size) {
is31_select_page(page);
return i2cMasterTransmitTimeout(&I2CD1, IS31_ADDR_DEFAULT, buffer, size, NULL, 0, US2ST(IS31_TIMEOUT));
}
msg_t is31_write_register(uint8_t page, uint8_t reg, uint8_t data) {
is31_select_page(page);
tx[0] = reg;
tx[1] = data;
return i2cMasterTransmitTimeout(&I2CD1, IS31_ADDR_DEFAULT, tx, 2, NULL, 0, US2ST(IS31_TIMEOUT));
}
msg_t is31_read_register(uint8_t b, uint8_t reg, uint8_t *result) {
is31_select_page(b);
tx[0] = reg;
return i2cMasterTransmitTimeout(&I2CD1, IS31_ADDR_DEFAULT, tx, 1, result, 1, US2ST(IS31_TIMEOUT));
}
/* ========================
* initialise the IS31 chip
* ======================== */
void is31_init(void) {
// just to be sure that it's all zeroes
__builtin_memset(full_page,0,0xB4+1);
// zero function page, all registers (assuming full_page is all zeroes)
is31_write_data(IS31_FUNCTIONREG, full_page, 0xD + 1);
// disable hardware shutdown
palSetPadMode(GPIOB, 16, PAL_MODE_OUTPUT_PUSHPULL);
palSetPad(GPIOB, 16);
chThdSleepMilliseconds(10);
// software shutdown
is31_write_register(IS31_FUNCTIONREG, IS31_REG_SHUTDOWN, 0);
chThdSleepMilliseconds(10);
// zero function page, all registers
is31_write_data(IS31_FUNCTIONREG, full_page, 0xD + 1);
chThdSleepMilliseconds(10);
// software shutdown disable (i.e. turn stuff on)
is31_write_register(IS31_FUNCTIONREG, IS31_REG_SHUTDOWN, IS31_REG_SHUTDOWN_ON);
chThdSleepMilliseconds(10);
// zero all LED registers on all 8 pages
uint8_t i;
for(i=0; i<8; i++) {
is31_write_data(i, full_page, 0xB4 + 1);
chThdSleepMilliseconds(1);
}
}
/* ==================
* LED control thread
* ================== */
#define LED_MAILBOX_NUM_MSGS 5
static msg_t led_mailbox_queue[LED_MAILBOX_NUM_MSGS];
mailbox_t led_mailbox;
static THD_WORKING_AREA(waLEDthread, 256);
static THD_FUNCTION(LEDthread, arg) {
(void)arg;
chRegSetThreadName("LEDthread");
uint8_t temp;
uint8_t save_page, save_breath1, save_breath2;
msg_t msg, retval;
while(true) {
// wait for a message (asynchronous)
// (messages are queued (up to LED_MAILBOX_NUM_MSGS) if they can't
// be processed right away)
chMBFetch(&led_mailbox, &msg, TIME_INFINITE);
// process 'msg' here
switch(msg) {
case LED_MSG_CAPS_ON:
// turn caps on on pages 1 and 2
is31_write_register(0, CAPS_LOCK_LED_ADDRESS, 0xFF);
is31_write_register(1, CAPS_LOCK_LED_ADDRESS, 0xFF);
is31_write_register(2, CAPS_LOCK_LED_ADDRESS, 0xFF);
break;
case LED_MSG_CAPS_OFF:
// turn caps off on pages 1 and 2
is31_write_register(0, CAPS_LOCK_LED_ADDRESS, 0);
is31_write_register(1, CAPS_LOCK_LED_ADDRESS, 0);
is31_write_register(2, CAPS_LOCK_LED_ADDRESS, 0);
break;
case LED_MSG_SLEEP_LED_ON:
// save current settings
is31_read_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, &save_page);
is31_read_register(IS31_FUNCTIONREG, IS31_REG_BREATHCTRL1, &save_breath1);
is31_read_register(IS31_FUNCTIONREG, IS31_REG_BREATHCTRL2, &save_breath2);
// use pages 7 and 8 for (hardware) breathing (assuming they're empty)
is31_write_register(6, BREATHE_LED_ADDRESS, 0xFF);
is31_write_register(7, BREATHE_LED_ADDRESS, 0x00);
is31_write_register(IS31_FUNCTIONREG, IS31_REG_BREATHCTRL1, (6<<4)|6);
is31_write_register(IS31_FUNCTIONREG, IS31_REG_BREATHCTRL2, IS31_REG_BREATHCTRL2_ENABLE|3);
retval = MSG_TIMEOUT;
temp = 6;
while(retval == MSG_TIMEOUT) {
// switch to the other page
is31_write_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, temp);
temp = (temp == 6 ? 7 : 6);
// the times should be sufficiently long for IS31 to finish switching pages
retval = chMBFetch(&led_mailbox, &msg, MS2ST(temp == 6 ? 4000 : 6000));
}
// received a message (should be a wakeup), so restore previous state
chThdSleepMilliseconds(3000); // need to wait until the page change finishes
// note: any other messages are queued
is31_write_register(IS31_FUNCTIONREG, IS31_REG_BREATHCTRL1, save_breath1);
is31_write_register(IS31_FUNCTIONREG, IS31_REG_BREATHCTRL2, save_breath2);
is31_write_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, save_page);
break;
case LED_MSG_SLEEP_LED_OFF:
// should not get here; wakeup should be received in the branch above
break;
case LED_MSG_ALL_TOGGLE:
// read current page into 'temp'
is31_read_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, &temp);
chThdSleepMilliseconds(1);
// switch to 'the other' page
if(temp==2) {
is31_write_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, 0);
} else {
is31_write_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, 2);
}
break;
case LED_MSG_GAME_TOGGLE:
// read current page into 'temp'
is31_read_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, &temp);
chThdSleepMilliseconds(1);
// switch to 'the other' page
if(temp==1) {
is31_write_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, 0);
} else {
is31_write_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, 1);
}
break;
}
}
}
/* LED game mode */
const uint8_t led_game[83] = {
0x24,
0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x34,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x44,
0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00,
0x54,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x64,
0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00,
0x74,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x84,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x94,
0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0x00,
0xA4,
0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0x00,
};
/* ALL LEDs */
const uint8_t led_all[83] = {
0x24,
0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0,
0x34,
0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0,
0x44,
0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0,
0x54,
0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0,
0x64,
0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0,
0x74,
0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0,
0x84,
0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0,
0x94,
0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0,
0xA4,
0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0,
};
/* =============
* hook into TMK
* ============= */
void hook_early_init(void) {
uint8_t i;
/* initialise I2C */
/* I2C pins */
palSetPadMode(GPIOB, 0, PAL_MODE_ALTERNATIVE_2); // PTB0/I2C0/SCL
palSetPadMode(GPIOB, 1, PAL_MODE_ALTERNATIVE_2); // PTB1/I2C0/SDA
/* start I2C */
i2cStart(&I2CD1, &i2ccfg);
// try high drive (from kiibohd)
I2CD1.i2c->C2 |= I2Cx_C2_HDRS;
// try glitch fixing (from kiibohd)
I2CD1.i2c->FLT = 4;
chThdSleepMilliseconds(10);
/* initialise IS31 chip */
is31_init();
/* enable WF LEDs on all pages */
full_page[0] = 0;
__builtin_memcpy(full_page+1, is31_wf_leds_mask, 0x12);
for(i=0; i<8; i++) {
is31_write_data(i, full_page, 1+0x12);
}
/* enable breathing when the displayed page changes */
// Fade-in Fade-out, time = 26ms * 2^N, N=3
is31_write_register(IS31_FUNCTIONREG, IS31_REG_BREATHCTRL1, (3<<4)|3);
is31_write_register(IS31_FUNCTIONREG, IS31_REG_BREATHCTRL2, IS31_REG_BREATHCTRL2_ENABLE|3);
/* Write pages */
for(i=0; i<9; i++) {
is31_write_data(1,(uint8_t *)(led_game+(9*i)),9);
chThdSleepMilliseconds(5);
is31_write_data(2,(uint8_t *)(led_all+(9*i)),9);
chThdSleepMilliseconds(5);
}
// clean up the capslock LED
is31_write_register(1, CAPS_LOCK_LED_ADDRESS, 0);
is31_write_register(2, CAPS_LOCK_LED_ADDRESS, 0);
/* more time consuming LED processing should be offloaded into
* a thread, with asynchronous messaging. */
chMBObjectInit(&led_mailbox, led_mailbox_queue, LED_MAILBOX_NUM_MSGS);
chThdCreateStatic(waLEDthread, sizeof(waLEDthread), LOWPRIO, LEDthread, NULL);
}
void hook_usb_suspend_entry(void) {
#ifdef SLEEP_LED_ENABLE
chSysLockFromISR();
chMBPostI(&led_mailbox, LED_MSG_SLEEP_LED_ON);
chSysUnlockFromISR();
#endif /* SLEEP_LED_ENABLE */
}
void hook_usb_suspend_loop(void) {
chThdSleepMilliseconds(100);
/* Remote wakeup */
if((USB_DRIVER.status & 2) && suspend_wakeup_condition()) {
send_remote_wakeup(&USB_DRIVER);
}
}
void hook_usb_wakeup(void) {
#ifdef SLEEP_LED_ENABLE
chSysLockFromISR();
chMBPostI(&led_mailbox, LED_MSG_SLEEP_LED_OFF);
chSysUnlockFromISR();
#endif /* SLEEP_LED_ENABLE */
}