From: Nathael Pajani <nathael.pajani@ed3l.fr>
Date: Thu, 23 Jan 2014 10:22:27 +0000 (+0100)
Subject: SPI and eeprom chip select fixes.
X-Git-Url: http://git.techno-innov.fr/?a=commitdiff_plain;h=d740063e9a2fda528f84f3ea7f15d8246a30abad;p=soft%2Flpc122x%2Fcore

SPI and eeprom chip select fixes.
---

diff --git a/drivers/eeprom.c b/drivers/eeprom.c
index 6aa161f..a46b2e8 100644
--- a/drivers/eeprom.c
+++ b/drivers/eeprom.c
@@ -44,7 +44,7 @@ int I2C_CS_Default_Set(void)
     /* Configure SPI_CS as output and set it low. */
     gpio0->data_dir |= (1 << I2C_CS_PIN);
     gpio0->clear = (1 << I2C_CS_PIN);
-	return 1;
+	return 0;
 }
 void I2C_CS_Default_Release(void)
 {
@@ -138,7 +138,7 @@ int eeprom_read(uint32_t offset, void *buf, size_t count)
 	char ctrl_buf[CMD_BUF_SIZE] = { I2C_CONT, I2C_CONT, I2C_DO_REPEATED_START, I2C_CONT, };
 	int eeprom_type = 0;
 
-	if (spi_device_cs_pull_low() == 0) {
+	if (spi_device_cs_pull_low() != 0) {
 		return -EBUSY;
 	}
 	eeprom_type = get_eeprom_type();
@@ -193,7 +193,7 @@ int eeprom_write(uint32_t offset, const void *buf, size_t count)
 	char full_buff[(EEPROM_ID_MAX_PAGE_SIZE + MAX_CMD_SIZE)];
 	int eeprom_type = 0;
 
-	if (spi_device_cs_pull_low() == 0) {
+	if (spi_device_cs_pull_low() != 0) {
 		return -EBUSY;
 	}
 	eeprom_type = get_eeprom_type();
diff --git a/drivers/ssp.c b/drivers/ssp.c
index 43331bc..fdf15fa 100644
--- a/drivers/ssp.c
+++ b/drivers/ssp.c
@@ -111,6 +111,10 @@ int spi_device_cs_pull_low(void)
 void spi_device_cs_release(void)
 {
 	struct lpc_gpio* gpio0 = LPC_GPIO_0;
+
+	/* Release mutex */
+	sync_lock_release(&spi_cs_mutex);
+
 	/* Set pin high */
     gpio0->set = (1 << SPI_CS_PIN);
 	/* Configure pin as SPI again */