diff options
| author | tim <tim2.lin@ite.corp-partner.google.com> | 2019-03-28 14:08:15 +0800 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2019-03-30 20:59:39 -0700 |
| commit | 6a7c59affa6aba2af814a45f6f49908d22e2fa04 (patch) | |
| tree | 92e5c77dda843e1e1eae9eabafdb2650d23870fa /chip/it83xx/intc.c | |
| parent | 101ef9c869d483307eb9325ec82a97f606e9caca (diff) | |
| download | chrome-ec-6a7c59affa6aba2af814a45f6f49908d22e2fa04.tar.gz | |
it83xx/i2cs: add i2c slave function
The I2C function of IT8320 is used as the slave.
The slave channel A can support 16-byte FIFO for
read and write data. The enhanced I2C channel D,
E and F can support read and write 256-byte data
by DMA mode.
When master transmits data to slave, the interrupt
signal will generate, and the data will be saved
to buffer.
BUG=none
BRANCH=none
TEST=none
Change-Id: I167215352119ec11dfd96eb1f33abc1e2111dead
Signed-off-by: tim <tim2.lin@ite.corp-partner.google.com>
Reviewed-on: https://chromium-review.googlesource.com/1488273
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Tim2 Lin <tim2.lin@ite.corp-partner.google.com>
Reviewed-by: Jett Rink <jettrink@chromium.org>
Reviewed-by: Vijay P Hiremath <vijay.p.hiremath@intel.com>
Diffstat (limited to 'chip/it83xx/intc.c')
| -rw-r--r-- | chip/it83xx/intc.c | 30 |
1 files changed, 25 insertions, 5 deletions
diff --git a/chip/it83xx/intc.c b/chip/it83xx/intc.c index 79d738e93c..033a65d87b 100644 --- a/chip/it83xx/intc.c +++ b/chip/it83xx/intc.c @@ -219,9 +219,14 @@ void intc_cpu_int_group_6(void) int intc_group_6 = intc_get_ec_int(); switch (intc_group_6) { -#ifdef CONFIG_I2C +#if defined(CONFIG_I2C_MASTER) || defined(CONFIG_I2C_SLAVE) case IT83XX_IRQ_SMB_A: - i2c_interrupt(IT83XX_I2C_CH_A); +#ifdef CONFIG_I2C_SLAVE + if (IT83XX_SMB_SFFCTL & IT83XX_SMB_SAFE) + i2c_slv_interrupt(IT83XX_I2C_CH_A); + else +#endif + i2c_interrupt(IT83XX_I2C_CH_A); break; case IT83XX_IRQ_SMB_B: @@ -233,15 +238,30 @@ void intc_cpu_int_group_6(void) break; case IT83XX_IRQ_SMB_D: - i2c_interrupt(IT83XX_I2C_CH_D); +#ifdef CONFIG_I2C_SLAVE + if (!(IT83XX_I2C_CTR(3) & IT83XX_I2C_MODE)) + i2c_slv_interrupt(IT83XX_I2C_CH_D); + else +#endif + i2c_interrupt(IT83XX_I2C_CH_D); break; case IT83XX_IRQ_SMB_E: - i2c_interrupt(IT83XX_I2C_CH_E); +#ifdef CONFIG_I2C_SLAVE + if (!(IT83XX_I2C_CTR(0) & IT83XX_I2C_MODE)) + i2c_slv_interrupt(IT83XX_I2C_CH_E); + else +#endif + i2c_interrupt(IT83XX_I2C_CH_E); break; case IT83XX_IRQ_SMB_F: - i2c_interrupt(IT83XX_I2C_CH_F); +#ifdef CONFIG_I2C_SLAVE + if (!(IT83XX_I2C_CTR(1) & IT83XX_I2C_MODE)) + i2c_slv_interrupt(IT83XX_I2C_CH_F); + else +#endif + i2c_interrupt(IT83XX_I2C_CH_F); break; #endif default: |