at91: Support for at91rm9200: core chip & board support

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Patrice Vilchez <patrice.vilchez@atmel.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 276 insertions, 0 deletions

diff --git a/arch/arm/mach-at91/at91rm9200_devices.c b/arch/arm/mach-at91/at91rm9200_devices.c
new file mode 100644
index 0000000000..f45008aa43
--- /dev/null
+++ b/arch/arm/mach-at91/at91rm9200_devices.c
@@ -0,0 +1,276 @@
+/*
+ * arch/arm/mach-at91/at91rm9200_devices.c
+ *
+ *  Copyright (C) 2005 Thibaut VARENE <varenet@parisc-linux.org>
+ *  Copyright (C) 2005 David Brownell
+ *
+ * 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.
+ *
+ */
+#include <common.h>
+#include <asm/armlinux.h>
+#include <mach/hardware.h>
+#include <mach/at91rm9200.h>
+#include <mach/board.h>
+#include <mach/gpio.h>
+#include <mach/io.h>
+
+#include "generic.h"
+
+static struct memory_platform_data ram_pdata = {
+	.name = "ram0",
+	.flags = DEVFS_RDWR,
+};
+
+static struct device_d sdram_dev = {
+	.id = -1,
+	.name = "mem",
+	.map_base = AT91_CHIPSELECT_1,
+	.platform_data = &ram_pdata,
+};
+
+void at91_add_device_sdram(u32 size)
+{
+	sdram_dev.size = size;
+	register_device(&sdram_dev);
+	armlinux_add_dram(&sdram_dev);
+}
+
+/* --------------------------------------------------------------------
+ *  Ethernet
+ * -------------------------------------------------------------------- */
+
+#if defined(CONFIG_DRIVER_NET_AT91_ETHER)
+static struct device_d at91rm9200_eth_device = {
+	.id		= 0,
+	.name		= "at91_ether",
+	.map_base	= AT91_VA_BASE_EMAC,
+	.size		= 0x1000,
+};
+
+void __init at91_add_device_eth(struct at91_ether_platform_data *data)
+{
+	if (!data)
+		return;
+
+	/* Pins used for MII and RMII */
+	at91_set_A_periph(AT91_PIN_PA16, 0);	/* EMDIO */
+	at91_set_A_periph(AT91_PIN_PA15, 0);	/* EMDC */
+	at91_set_A_periph(AT91_PIN_PA14, 0);	/* ERXER */
+	at91_set_A_periph(AT91_PIN_PA13, 0);	/* ERX1 */
+	at91_set_A_periph(AT91_PIN_PA12, 0);	/* ERX0 */
+	at91_set_A_periph(AT91_PIN_PA11, 0);	/* ECRS_ECRSDV */
+	at91_set_A_periph(AT91_PIN_PA10, 0);	/* ETX1 */
+	at91_set_A_periph(AT91_PIN_PA9, 0);	/* ETX0 */
+	at91_set_A_periph(AT91_PIN_PA8, 0);	/* ETXEN */
+	at91_set_A_periph(AT91_PIN_PA7, 0);	/* ETXCK_EREFCK */
+
+	if (!(data->flags & AT91SAM_ETHER_RMII)) {
+		at91_set_B_periph(AT91_PIN_PB19, 0);	/* ERXCK */
+		at91_set_B_periph(AT91_PIN_PB18, 0);	/* ECOL */
+		at91_set_B_periph(AT91_PIN_PB17, 0);	/* ERXDV */
+		at91_set_B_periph(AT91_PIN_PB16, 0);	/* ERX3 */
+		at91_set_B_periph(AT91_PIN_PB15, 0);	/* ERX2 */
+		at91_set_B_periph(AT91_PIN_PB14, 0);	/* ETXER */
+		at91_set_B_periph(AT91_PIN_PB13, 0);	/* ETX3 */
+		at91_set_B_periph(AT91_PIN_PB12, 0);	/* ETX2 */
+	}
+
+	at91rm9200_eth_device.platform_data = data;
+	register_device(&at91rm9200_eth_device);
+}
+#else
+void __init at91_add_device_eth(struct at91_ether_platform_data *data) {}
+#endif
+
+/* --------------------------------------------------------------------
+ *  NAND / SmartMedia
+ * -------------------------------------------------------------------- */
+
+#if defined(CONFIG_NAND_ATMEL)
+static struct device_d at91rm9200_nand_device = {
+	.id		= -1,
+	.name		= "atmel_nand",
+	.map_base	= AT91_CHIPSELECT_3,
+	.size		= 0x10,
+};
+
+void __init at91_add_device_nand(struct atmel_nand_data *data)
+{
+	unsigned int csa;
+
+	if (!data)
+		return;
+
+	/* enable the address range of CS3 */
+	csa = at91_sys_read(AT91_EBI_CSA);
+	at91_sys_write(AT91_EBI_CSA, csa | AT91_EBI_CS3A_SMC_SMARTMEDIA);
+
+	/* set the bus interface characteristics */
+	at91_sys_write(AT91_SMC_CSR(3), AT91_SMC_ACSS_STD | AT91_SMC_DBW_8 | AT91_SMC_WSEN
+		| AT91_SMC_NWS_(5)
+		| AT91_SMC_TDF_(1)
+		| AT91_SMC_RWSETUP_(0)	/* tDS Data Set up Time 30 - ns */
+		| AT91_SMC_RWHOLD_(1)	/* tDH Data Hold Time 20 - ns */
+	);
+
+	/* enable pin */
+	if (data->enable_pin)
+		at91_set_gpio_output(data->enable_pin, 1);
+
+	/* ready/busy pin */
+	if (data->rdy_pin)
+		at91_set_gpio_input(data->rdy_pin, 1);
+
+	/* card detect pin */
+	if (data->det_pin)
+		at91_set_gpio_input(data->det_pin, 1);
+
+	at91_set_A_periph(AT91_PIN_PC1, 0);		/* SMOE */
+	at91_set_A_periph(AT91_PIN_PC3, 0);		/* SMWE */
+
+	at91rm9200_nand_device.platform_data = data;
+	platform_device_register(&at91rm9200_nand_device);
+}
+#else
+void __init at91_add_device_nand(struct atmel_nand_data *data) {}
+#endif
+
+/* --------------------------------------------------------------------
+ *  UART
+ * -------------------------------------------------------------------- */
+
+static struct device_d dbgu_serial_device = {
+	.id		= 0,
+	.name		= "atmel_serial",
+	.map_base	= (AT91_BASE_SYS + AT91_DBGU),
+	.size		= 4096,
+};
+
+static inline void configure_dbgu_pins(void)
+{
+	at91_set_A_periph(AT91_PIN_PA30, 0);		/* DRXD */
+	at91_set_A_periph(AT91_PIN_PA31, 1);		/* DTXD */
+}
+
+static struct device_d uart0_serial_device = {
+	.id		= 1,
+	.name		= "atmel_serial",
+	.map_base	= AT91RM9200_BASE_US0,
+	.size		= 4096,
+};
+
+static inline void configure_usart0_pins(unsigned pins)
+{
+	at91_set_A_periph(AT91_PIN_PA17, 1);		/* TXD0 */
+	at91_set_A_periph(AT91_PIN_PA18, 0);		/* RXD0 */
+
+	if (pins & ATMEL_UART_CTS)
+		at91_set_A_periph(AT91_PIN_PA20, 0);	/* CTS0 */
+
+	if (pins & ATMEL_UART_RTS) {
+		/*
+		 * AT91RM9200 Errata #39 - RTS0 is not internally connected to PA21.
+		 *  We need to drive the pin manually.  Default is off (RTS is active low).
+		 */
+		at91_set_gpio_output(AT91_PIN_PA21, 1);
+	}
+}
+
+static struct device_d uart1_serial_device = {
+	.id		= 2,
+	.name		= "atmel_serial",
+	.map_base	= AT91RM9200_BASE_US1,
+	.size		= 4096,
+};
+
+static inline void configure_usart1_pins(unsigned pins)
+{
+	at91_set_A_periph(AT91_PIN_PB20, 1);		/* TXD1 */
+	at91_set_A_periph(AT91_PIN_PB21, 0);		/* RXD1 */
+
+	if (pins & ATMEL_UART_RI)
+		at91_set_A_periph(AT91_PIN_PB18, 0);	/* RI1 */
+	if (pins & ATMEL_UART_DTR)
+		at91_set_A_periph(AT91_PIN_PB19, 0);	/* DTR1 */
+	if (pins & ATMEL_UART_DCD)
+		at91_set_A_periph(AT91_PIN_PB23, 0);	/* DCD1 */
+	if (pins & ATMEL_UART_CTS)
+		at91_set_A_periph(AT91_PIN_PB24, 0);	/* CTS1 */
+	if (pins & ATMEL_UART_DSR)
+		at91_set_A_periph(AT91_PIN_PB25, 0);	/* DSR1 */
+	if (pins & ATMEL_UART_RTS)
+		at91_set_A_periph(AT91_PIN_PB26, 0);	/* RTS1 */
+}
+
+static struct device_d uart2_serial_device = {
+	.id		= 3,
+	.name		= "atmel_serial",
+	.map_base	= AT91RM9200_BASE_US2,
+	.size		= 4096,
+};
+
+static inline void configure_usart2_pins(unsigned pins)
+{
+	at91_set_A_periph(AT91_PIN_PA22, 0);		/* RXD2 */
+	at91_set_A_periph(AT91_PIN_PA23, 1);		/* TXD2 */
+
+	if (pins & ATMEL_UART_CTS)
+		at91_set_B_periph(AT91_PIN_PA30, 0);	/* CTS2 */
+	if (pins & ATMEL_UART_RTS)
+		at91_set_B_periph(AT91_PIN_PA31, 0);	/* RTS2 */
+}
+
+static struct device_d uart3_serial_device = {
+	.id		= 4,
+	.name		= "atmel_serial",
+	.map_base	= AT91RM9200_BASE_US3,
+	.size		= 4096,
+};
+
+static inline void configure_usart3_pins(unsigned pins)
+{
+	at91_set_B_periph(AT91_PIN_PA5, 1);		/* TXD3 */
+	at91_set_B_periph(AT91_PIN_PA6, 0);		/* RXD3 */
+
+	if (pins & ATMEL_UART_CTS)
+		at91_set_B_periph(AT91_PIN_PB1, 0);	/* CTS3 */
+	if (pins & ATMEL_UART_RTS)
+		at91_set_B_periph(AT91_PIN_PB0, 0);	/* RTS3 */
+}
+
+void __init at91_register_uart(unsigned id, unsigned pins)
+{
+	switch (id) {
+		case 0:		/* DBGU */
+			configure_dbgu_pins();
+			at91_clock_associate("mck", &dbgu_serial_device, "usart");
+			register_device(&dbgu_serial_device);
+			break;
+		case AT91RM9200_ID_US0:
+			configure_usart0_pins(pins);
+			at91_clock_associate("usart0_clk", &uart0_serial_device, "usart");
+			break;
+		case AT91RM9200_ID_US1:
+			configure_usart1_pins(pins);
+			at91_clock_associate("usart1_clk", &uart1_serial_device, "usart");
+			register_device(&uart1_serial_device);
+			break;
+		case AT91RM9200_ID_US2:
+			configure_usart2_pins(pins);
+			at91_clock_associate("usart2_clk", &uart2_serial_device, "usart");
+			register_device(&uart2_serial_device);
+			break;
+		case AT91RM9200_ID_US3:
+			configure_usart3_pins(pins);
+			at91_clock_associate("usart3_clk", &uart3_serial_device, "usart");
+			register_device(&uart3_serial_device);
+			break;
+		default:
+			return;
+	}
+
+}