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Fix bpmpfw/Makefile, other changes.

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This commit is contained in:
TuxSH
2018-02-23 13:56:23 +01:00
parent 90f792b1cc
commit 91d1b047c4
5 changed files with 63 additions and 67 deletions
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30
exosphere/bpmpfw/src/i2c.c
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@@ -5,7 +5,7 @@
void i2c_load_config(void) {
/* Set MSTR_CONFIG_LOAD, TIMEOUT_CONFIG_LOAD, undocumented bit. */
I2C_I2C_CONFIG_LOAD_0 = 0x25;
/* Wait a bit for master config to be loaded. */
for (unsigned int i = 0; i < 20; i++) {
timer_wait(1);
@@ -20,10 +20,10 @@ void i2c_init(void) {
/* Setup divisor, and clear the bus. */
I2C_I2C_CLK_DIVISOR_REGISTER_0 = 0x50001;
I2C_I2C_BUS_CLEAR_CONFIG_0 = 0x90003;
/* Load hardware configuration. */
i2c_load_config();
/* Wait a while until BUS_CLEAR_DONE is set. */
for (unsigned int i = 0; i < 10; i++) {
timer_wait(20000);
@@ -31,10 +31,10 @@ void i2c_init(void) {
break;
}
}
/* Read the BUS_CLEAR_STATUS. Result doesn't matter. */
uint32_t unused_clear_status = I2C_I2C_BUS_CLEAR_STATUS_0;
I2C_I2C_BUS_CLEAR_STATUS_0;
/* Read and set the Interrupt Status. */
uint32_t int_status = I2C_INTERRUPT_STATUS_REGISTER_0;
I2C_INTERRUPT_STATUS_REGISTER_0 = int_status;
@@ -45,26 +45,26 @@ int i2c_write(unsigned int device, uint32_t val, unsigned int num_bytes) {
if (num_bytes > 4) {
return 0;
}
/* Set device for 7-bit mode. */
I2C_I2C_CMD_ADDR0_0 = device << 1;
/* Load in data to write. */
I2C_I2C_CMD_DATA1_0 = val;
/* Set config with LENGTH = num_bytes, NEW_MASTER_FSM, DEBOUNCE_CNT = 4T. */
I2C_I2C_CNFG_0 = ((num_bytes << 1) - 2) | 0x2800;
i2c_load_config();
/* Config |= SEND; */
I2C_I2C_CNFG_0 |= 0x200;
while (I2C_I2C_STATUS_0 & 0x100) {
/* Wait until not busy. */
}
/* Return CMD1_STAT == SL1_XFER_SUCCESSFUL. */
return (I2C_I2C_STATUS_0 & 7) == 0;
}
@@ -80,4 +80,4 @@ int i2c_send_byte_command(unsigned int device, unsigned char reg, unsigned char
int i2c_send_reset_cmd(void) {
/* Write 00 to Device 27 Reg 00. */
return i2c_send_byte_command(27, 0, 0);
}
}