diff options
| author | tim <tim2.lin@ite.corp-partner.google.com> | 2020-02-13 14:37:38 +0800 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2020-02-21 09:26:28 +0000 |
| commit | 937af456b82fad241049f02d276ad8f66b25a2de (patch) | |
| tree | 6a51ca139e49035b49f4fdd82a8d86b2bc962d46 /chip/it83xx/registers.h | |
| parent | f18b94ab43c8a7fce3aee0077c09fa5608924659 (diff) | |
| download | chrome-ec-937af456b82fad241049f02d276ad8f66b25a2de.tar.gz | |
it83xx/dac: add DAC module
The DAC module has four channels. We can
set output voltage when DAC channel is
enabled by this driver.
BUG=b:149094279
BRANCH=none
TEST=The console command #dac set as follows:
read: dac [ch]
write: dac [ch] [voltage]
[ch]:2-5, [voltage]:0(disable)-3300
Change-Id: I8e815cb5bc749467581d5f771fd6f9e0995fca3b
Signed-off-by: tim <tim2.lin@ite.corp-partner.google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2046685
Reviewed-by: Diana Z <dzigterman@chromium.org>
Diffstat (limited to 'chip/it83xx/registers.h')
| -rw-r--r-- | chip/it83xx/registers.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/chip/it83xx/registers.h b/chip/it83xx/registers.h index dfa8c2ad11..3eceda91de 100644 --- a/chip/it83xx/registers.h +++ b/chip/it83xx/registers.h @@ -1087,6 +1087,13 @@ enum clock_gate_offsets { #define IT83XX_ADC_VCH16DATL REG8(IT83XX_ADC_BASE+0x6B) #define IT83XX_ADC_ADCDVSTS2 REG8(IT83XX_ADC_BASE+0x6C) +/* Digital to Analog Converter (DAC) */ +#define IT83XX_DAC_BASE 0x00F01A00 + +#define IT83XX_DAC_DACPDREG REG8(IT83XX_DAC_BASE+0x01) +#define IT83XX_DAC_POWDN(ch) BIT(ch) +#define IT83XX_DAC_DACDAT(ch) REG8(IT83XX_DAC_BASE+0x02+ch) + /* Keyboard Controller (KBC) */ #define IT83XX_KBC_BASE 0x00F01300 @@ -1550,7 +1557,6 @@ extern const int hibernate_wake_pins_used; /* --- MISC (not implemented yet) --- */ #define IT83XX_PS2_BASE 0x00F01700 -#define IT83XX_DAC_BASE 0x00F01A00 #define IT83XX_EGPIO_BASE 0x00F02100 #define IT83XX_CIR_BASE 0x00F02300 #define IT83XX_DBGR_BASE 0x00F02500 |