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firmware: Fix I2C A forwarding mode

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- add charger INT check prior to transaction via P87
- re-route POGO int to P84
- wrong macro name, fix CONFIG_I2C_A=0 mode
This commit is contained in:
Ondrej Jirman 2021-08-05 02:29:23 +02:00
parent c55f0a44d5
commit 15d477f5ba
1 changed files with 35 additions and 1 deletions
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36
firmware/main.c
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@ -496,16 +496,32 @@ static uint8_t keyscan_scan(uint8_t* res)
static void ext_int_assert(void)
{
#if CONFIG_I2C_A
// modded prototype 3 POGO INT pin
P84 = 0;
PAGESW = 0;
P0_P8M0 &= ~BIT(4); // output
#else
// original prototype POGO INT pin
P90 = 0;
PAGESW = 1;
P1_P9M0 &= ~BIT(0);
#endif
}
static void ext_int_deassert(void)
{
#if CONFIG_I2C_A
// modded prototype 3 POGO INT pin
P84 = 0;
PAGESW = 0;
P0_P8M0 |= BIT(4); // input
#else
// original prototype POGO INT pin
P90 = 0;
PAGESW = 1;
P1_P9M0 |= BIT(0);
#endif
}
// }}}
@ -587,7 +603,7 @@ static volatile uint8_t __idata ro_regs[REG_KEYMATRIX_STATE_END + 1] = {
#if CONFIG_STOCK_FW
REG_FW_FEATURES_STOCK_FW |
#endif
#if CONFIG_I2CA
#if CONFIG_I2C_A
REG_FW_FEATURES_I2CA |
#endif
0,
@ -990,6 +1006,16 @@ static __bit poll_flag(uint8_t flag)
return 0;
}
static __bit charger_is_woke(void)
{
PAGESW = 1;
P1_PHCON2 |= BIT(3); // pull-up on P87-P84
PAGESW = 0;
P0_P8M0 |= BIT(7); // input
return !P87;
}
static __bit i2c_a_send_addr(uint8_t addr)
{
P0_I2CASA = addr;
@ -1038,6 +1064,9 @@ static uint8_t i2c_a_read(void)
P0_I2CACR2 &= ~BIT(5);
P0_I2CACR2 |= BIT(5);
if (!charger_is_woke())
return 0xff;
if (!i2c_a_send_addr(CHARGER_ADDR))
goto err;
@ -1068,6 +1097,9 @@ static uint8_t i2c_a_write(void)
P0_I2CACR2 &= ~BIT(5);
P0_I2CACR2 |= BIT(5);
if (!charger_is_woke())
return 0xff;
if (!i2c_a_send_addr(CHARGER_ADDR))
goto err;
@ -1116,10 +1148,12 @@ static void exec_system_command(void)
#endif
} else if (REG_SYS(COMMAND) == REG_SYS_COMMAND_USB_IAP) {
jump_to_usb_bootloader = 1;
#if CONFIG_I2C_A
} else if (REG_SYS(COMMAND) == REG_SYS_COMMAND_I2CA_READ) {
REG_SYS(COMMAND) = i2c_a_read();
} else if (REG_SYS(COMMAND) == REG_SYS_COMMAND_I2CA_WRITE) {
REG_SYS(COMMAND) = i2c_a_write();
#endif
} else {
REG_SYS(COMMAND) = 0xff;
goto out_done;