+/* CAN bus on SPI */
+static int zeus_mcp2515_setup(struct spi_device *sdev)
+{
+ int err;
+
+ err = gpio_request(ZEUS_CAN_SHDN_GPIO, "CAN shutdown");
+ if (err)
+ return err;
+
+ err = gpio_direction_output(ZEUS_CAN_SHDN_GPIO, 1);
+ if (err) {
+ gpio_free(ZEUS_CAN_SHDN_GPIO);
+ return err;
+ }
+
+ return 0;
+}
+
+static int zeus_mcp2515_transceiver_enable(int enable)
+{
+ gpio_set_value(ZEUS_CAN_SHDN_GPIO, !enable);
+ return 0;
+}
+
+static struct mcp251x_platform_data zeus_mcp2515_pdata = {
+ .oscillator_frequency = 16*1000*1000,
+ .model = CAN_MCP251X_MCP2515,
+ .board_specific_setup = zeus_mcp2515_setup,
+ .transceiver_enable = zeus_mcp2515_transceiver_enable,
+ .power_enable = zeus_mcp2515_transceiver_enable,
+};
+
+static struct spi_board_info zeus_spi_board_info[] = {
+ [0] = {
+ .modalias = "mcp251x",
+ .platform_data = &zeus_mcp2515_pdata,
+ .irq = gpio_to_irq(ZEUS_CAN_GPIO),
+ .max_speed_hz = 1*1000*1000,
+ .bus_num = 3,
+ .mode = SPI_MODE_0,
+ .chip_select = 0,