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drivers: espi: xec: Report espi reset correctly to app

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Handle espi reset interrupt before clearing it
So it can send correct notification.

Signed-off-by: Jose Alberto Meza <jose.a.meza.arellano@intel.com>
This commit is contained in:
Jose Alberto Meza 2019-10-09 19:49:39 -07:00 • committed by Andrew Boie
commit d52a3660de
1 changed files with 7 additions and 5 deletions
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12
drivers/espi/espi_mchp_xec.c
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@ -365,15 +365,17 @@ static void espi_init_flash(struct device *dev)
static void espi_rst_isr(struct device *dev) static void espi_rst_isr(struct device *dev)
{ {
u8_t rst_sts;
struct espi_xec_data *data = (struct espi_xec_data *)(dev->driver_data); struct espi_xec_data *data = (struct espi_xec_data *)(dev->driver_data);
struct espi_event evt = { ESPI_BUS_RESET, 0, 0 }; struct espi_event evt = { ESPI_BUS_RESET, 0, 0 };
if (ESPI_CAP_REGS->ERST_STS & MCHP_ESPI_RST_ISTS) { rst_sts = ESPI_CAP_REGS->ERST_STS;
ESPI_CAP_REGS->ERST_STS |= MCHP_ESPI_RST_ISTS;
/* TODO: Check if we need to detect eSPI reset after boot */ /* eSPI reset status register is clear on write register */
ESPI_CAP_REGS->ERST_IEN = 0; ESPI_CAP_REGS->ERST_STS |= MCHP_ESPI_RST_ISTS;
if (ESPI_CAP_REGS->ERST_STS & ~MCHP_ESPI_RST_ISTS_PIN_RO_HI) {
if (rst_sts & MCHP_ESPI_RST_ISTS) {
if (rst_sts & ~MCHP_ESPI_RST_ISTS_PIN_RO_HI) {
data->espi_rst_asserted = 1; data->espi_rst_asserted = 1;
} else { } else {
data->espi_rst_asserted = 0; data->espi_rst_asserted = 0;