Add support for the Calao SBC35-A9G20 board

The Calao SBC35-A9G20 board is manufactured and sold by Calao Systems
<http://www.calao-systems.com>. It is built around an AT91SAM9G20 ARM SoC
running at 400MHz. It features an Ethernet port, an SPI RTC backed by an onboard
battery , an SD/MMC slot, a CompactFlash slot, 64Mo of SDRAM, 256Mo of NAND
flash, two USB host ports, and an USB device port. More informations can be
found at <http://www.calao-systems.com/articles.php?lng=en&pg=5936>

Signed-off-by: Albin Tonnerre <albin.tonnerre@free-electrons.com>

1 files changed, 57 insertions, 0 deletions

diff --git a/board/calao/sbc35_a9g20/spi.c b/board/calao/sbc35_a9g20/spi.c
new file mode 100644
index 0000000..1057fa2
--- /dev/null
+++ b/board/calao/sbc35_a9g20/spi.c
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2009
+ * Albin Tonnerre, Free Electrons <albin.tonnerre@free-electrons.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/at91_spi.h>
+#include <asm/arch/gpio.h>
+#include <spi.h>
+
+#define SBC_A9260_CS0_PIN	AT91_PIN_PA3
+#define SBC_A9260_CS1_PIN	AT91_PIN_PC11
+
+int spi_cs_is_valid(unsigned int bus, unsigned int cs)
+{
+	return bus == 0 && (cs == 1 || cs == 0);
+}
+
+void spi_cs_activate(struct spi_slave *slave)
+{
+	if(slave->cs == 0)
+		at91_set_gpio_value(SBC_A9260_CS0_PIN, 0);
+	else if(slave->cs == 1)
+		at91_set_gpio_value(SBC_A9260_CS1_PIN, 0);
+}
+
+void spi_cs_deactivate(struct spi_slave *slave)
+{
+	if(slave->cs == 0)
+		at91_set_gpio_value(SBC_A9260_CS0_PIN, 1);
+	else if(slave->cs == 1)
+		at91_set_gpio_value(SBC_A9260_CS1_PIN, 1);
+}
+
+void spi_init_f(void)
+{
+	/* everything done in board_init */
+}