AT91: add board support for Pcontrol_G20

Board is a carrier board for Stamp9G20, with additional peripherals
for a building automation system

Signed-off-by: Peter Gsellmann <pgsellmann@portner-elektronik.at>
[nicolas.ferre@atmel.com: remove machine_desc.io_pg_offst and .phys_io]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

3 files changed, 329 insertions, 0 deletions

diff --git a/arch/arm/mach-at91/Kconfig b/arch/arm/mach-at91/Kconfig
index abed4d15a7fd..c015b684b4fe 100644
--- a/arch/arm/mach-at91/Kconfig
+++ b/arch/arm/mach-at91/Kconfig
@@ -375,6 +375,12 @@ config MACH_STAMP9G20
 	  evaluation board.
 	  <http://www.taskit.de/en/>
 
+config MACH_PCONTROL_G20
+	bool "PControl G20 CPU module"
+	help
+	  Select this if you are using taskit's Stamp9G20 CPU module on this
+	  carrier board, beeing the decentralized unit of a building automation
+	  system; featuring nvram, eth-switch, iso-rs485, display, io
 endif
 
 if (ARCH_AT91SAM9260 || ARCH_AT91SAM9G20)
diff --git a/arch/arm/mach-at91/Makefile b/arch/arm/mach-at91/Makefile
index 412b3a471a4b..72b6b1b1722a 100644
--- a/arch/arm/mach-at91/Makefile
+++ b/arch/arm/mach-at91/Makefile
@@ -65,6 +65,7 @@ obj-$(CONFIG_MACH_AT91SAM9G20EK) += board-sam9g20ek.o
 obj-$(CONFIG_MACH_CPU9G20)	+= board-cpu9krea.o
 obj-$(CONFIG_MACH_STAMP9G20)	+= board-stamp9g20.o
 obj-$(CONFIG_MACH_PORTUXG20)	+= board-stamp9g20.o
+obj-$(CONFIG_MACH_PCONTROL_G20)	+= board-pcontrol-g20.o
 
 # AT91SAM9260/AT91SAM9G20 board-specific support
 obj-$(CONFIG_MACH_SNAPPER_9260)	+= board-snapper9260.o
diff --git a/arch/arm/mach-at91/board-pcontrol-g20.c b/arch/arm/mach-at91/board-pcontrol-g20.c
new file mode 100644
index 000000000000..bba5a560e02b
--- /dev/null
+++ b/arch/arm/mach-at91/board-pcontrol-g20.c
@@ -0,0 +1,322 @@
+/*
+ *  Copyright (C) 2010 Christian Glindkamp <christian.glindkamp@taskit.de>
+ *                     taskit GmbH
+ *
+ * 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
+ */
+/*
+ * copied and adjusted from board-stamp9g20.c
+ * by Peter Gsellmann <pgsellmann@portner-elektronik.at>
+ */
+
+#include <linux/mm.h>
+#include <linux/platform_device.h>
+#include <linux/gpio.h>
+#include <linux/w1-gpio.h>
+
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+
+#include <mach/board.h>
+#include <mach/at91sam9_smc.h>
+
+#include "sam9_smc.h"
+#include "generic.h"
+
+
+static void __init pcontrol_g20_map_io(void)
+{
+	/* Initialize processor: 18.432 MHz crystal */
+	at91sam9260_initialize(18432000);
+
+	/* DGBU on ttyS0. (Rx, Tx) only TTL -> JTAG connector X7 17,19 ) */
+	at91_register_uart(0, 0, 0);
+
+	/* USART0 on ttyS1. (Rx, Tx, CTS, RTS) piggyback  A2 */
+	at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS
+						| ATMEL_UART_RTS);
+
+	/* USART1 on ttyS2. (Rx, Tx, CTS, RTS) isolated RS485  X5 */
+	at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS
+						| ATMEL_UART_RTS);
+
+	/* USART2 on ttyS3. (Rx, Tx)  9bit-Bus  Multidrop-mode  X4 */
+	at91_register_uart(AT91SAM9260_ID_US4, 3, 0);
+
+	/* set serial console to ttyS0 (ie, DBGU) */
+	at91_set_serial_console(0);
+}
+
+
+static void __init init_irq(void)
+{
+	at91sam9260_init_interrupts(NULL);
+}
+
+
+/*
+ * NAND flash 512MiB 1,8V 8-bit, sector size 128 KiB
+ */
+static struct atmel_nand_data __initdata nand_data = {
+	.ale		= 21,
+	.cle		= 22,
+	.rdy_pin	= AT91_PIN_PC13,
+	.enable_pin	= AT91_PIN_PC14,
+};
+
+/*
+ * Bus timings; unit = 7.57ns
+ */
+static struct sam9_smc_config __initdata nand_smc_config = {
+	.ncs_read_setup		= 0,
+	.nrd_setup		= 2,
+	.ncs_write_setup	= 0,
+	.nwe_setup		= 2,
+
+	.ncs_read_pulse		= 4,
+	.nrd_pulse		= 4,
+	.ncs_write_pulse	= 4,
+	.nwe_pulse		= 4,
+
+	.read_cycle		= 7,
+	.write_cycle		= 7,
+
+	.mode			= AT91_SMC_READMODE | AT91_SMC_WRITEMODE
+			| AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
+	.tdf_cycles		= 3,
+};
+
+static struct sam9_smc_config __initdata pcontrol_smc_config[2] = { {
+	.ncs_read_setup		= 16,
+	.nrd_setup		= 18,
+	.ncs_write_setup	= 16,
+	.nwe_setup		= 18,
+
+	.ncs_read_pulse		= 63,
+	.nrd_pulse		= 55,
+	.ncs_write_pulse	= 63,
+	.nwe_pulse		= 55,
+
+	.read_cycle		= 127,
+	.write_cycle		= 127,
+
+	.mode			= AT91_SMC_READMODE | AT91_SMC_WRITEMODE
+			| AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_BAT_SELECT
+			| AT91_SMC_DBW_8 | AT91_SMC_PS_4
+			| AT91_SMC_TDFMODE,
+	.tdf_cycles		= 3,
+}, {
+	.ncs_read_setup		= 0,
+	.nrd_setup		= 0,
+	.ncs_write_setup	= 0,
+	.nwe_setup		= 1,
+
+	.ncs_read_pulse		= 8,
+	.nrd_pulse		= 8,
+	.ncs_write_pulse	= 5,
+	.nwe_pulse		= 4,
+
+	.read_cycle		= 8,
+	.write_cycle		= 7,
+
+	.mode			= AT91_SMC_READMODE | AT91_SMC_WRITEMODE
+			| AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_BAT_SELECT
+			| AT91_SMC_DBW_16 | AT91_SMC_PS_8
+			| AT91_SMC_TDFMODE,
+	.tdf_cycles		= 1,
+} };
+
+static void __init add_device_nand(void)
+{
+	/* configure chip-select 3 (NAND) */
+	sam9_smc_configure(3, &nand_smc_config);
+	at91_add_device_nand(&nand_data);
+}
+
+
+static void __init add_device_pcontrol(void)
+{
+	/* configure chip-select 4 (IO compatible to 8051  X4 ) */
+	sam9_smc_configure(4, &pcontrol_smc_config[0]);
+	/* configure chip-select 7 (FerroRAM 256KiBx16bit MR2A16A  D4 ) */
+	sam9_smc_configure(7, &pcontrol_smc_config[1]);
+}
+
+
+/*
+ * MCI (SD/MMC)
+ * det_pin, wp_pin and vcc_pin are not connected
+ */
+#if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
+static struct mci_platform_data __initdata mmc_data = {
+	.slot[0] = {
+		.bus_width	= 4,
+	},
+};
+#else
+static struct at91_mmc_data __initdata mmc_data = {
+	.wire4		= 1,
+};
+#endif
+
+
+/*
+ * USB Host port
+ */
+static struct at91_usbh_data __initdata usbh_data = {
+	.ports		= 2,
+};
+
+
+/*
+ * USB Device port
+ */
+static struct at91_udc_data __initdata pcontrol_g20_udc_data = {
+	.vbus_pin	= AT91_PIN_PA22,	/* Detect +5V bus voltage */
+	.pullup_pin	= AT91_PIN_PA4,		/* K-state, active low */
+};
+
+
+/*
+ * MACB Ethernet device
+ */
+static struct at91_eth_data __initdata macb_data = {
+	.phy_irq_pin	= AT91_PIN_PA28,
+	.is_rmii	= 1,
+};
+
+
+/*
+ * I2C devices: eeprom and phy/switch
+ */
+static struct i2c_board_info __initdata pcontrol_g20_i2c_devices[] = {
+{		/* D7  address width=2, 8KiB */
+	I2C_BOARD_INFO("24c64", 0x50)
+}, {		/* D8  address width=1, 1 byte has 32 bits! */
+	I2C_BOARD_INFO("lan9303", 0x0a)
+}, };
+
+
+/*
+ * LEDs
+ */
+static struct gpio_led pcontrol_g20_leds[] = {
+	{
+		.name			= "LED1",	/* red  H5 */
+		.gpio			= AT91_PIN_PB18,
+		.active_low		= 1,
+		.default_trigger	= "none",	/* supervisor */
+	}, {
+		.name			= "LED2",	/* yellow  H7 */
+		.gpio			= AT91_PIN_PB19,
+		.active_low		= 1,
+		.default_trigger	= "mmc0",	/* SD-card activity */
+	}, {
+		.name			= "LED3",	/* green  H2 */
+		.gpio			= AT91_PIN_PB20,
+		.active_low		= 1,
+		.default_trigger	= "heartbeat",	/* blinky */
+	}, {
+		.name			= "LED4",	/* red  H3 */
+		.gpio			= AT91_PIN_PC6,
+		.active_low		= 1,
+		.default_trigger	= "none",	/* connection lost */
+	}, {
+		.name			= "LED5",	/* yellow  H6 */
+		.gpio			= AT91_PIN_PC7,
+		.active_low		= 1,
+		.default_trigger	= "none",	/* unsent data */
+	}, {
+		.name			= "LED6",	/* green  H1 */
+		.gpio			= AT91_PIN_PC9,
+		.active_low		= 1,
+		.default_trigger	= "none",	/* snafu */
+	}
+};
+
+
+/*
+ * SPI devices
+ */
+static struct spi_board_info pcontrol_g20_spi_devices[] = {
+	{
+		.modalias	= "spidev",	/* HMI port  X4 */
+		.chip_select	= 1,
+		.max_speed_hz	= 50 * 1000 * 1000,
+		.bus_num	= 0,
+	}, {
+		.modalias	= "spidev",	/* piggyback  A2 */
+		.chip_select	= 0,
+		.max_speed_hz	= 50 * 1000 * 1000,
+		.bus_num	= 1,
+	},
+};
+
+
+/*
+ * Dallas 1-Wire  DS2431
+ */
+static struct w1_gpio_platform_data w1_gpio_pdata = {
+	.pin		= AT91_PIN_PA29,
+	.is_open_drain	= 1,
+};
+
+static struct platform_device w1_device = {
+	.name			= "w1-gpio",
+	.id			= -1,
+	.dev.platform_data	= &w1_gpio_pdata,
+};
+
+static void add_wire1(void)
+{
+	at91_set_GPIO_periph(w1_gpio_pdata.pin, 1);
+	at91_set_multi_drive(w1_gpio_pdata.pin, 1);
+	platform_device_register(&w1_device);
+}
+
+
+static void __init pcontrol_g20_board_init(void)
+{
+	at91_add_device_serial();
+	add_device_nand();
+#if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
+	at91_add_device_mci(0, &mmc_data);
+#else
+	at91_add_device_mmc(0, &mmc_data);
+#endif
+	at91_add_device_usbh(&usbh_data);
+	at91_add_device_eth(&macb_data);
+	at91_add_device_i2c(pcontrol_g20_i2c_devices,
+		ARRAY_SIZE(pcontrol_g20_i2c_devices));
+	add_wire1();
+	add_device_pcontrol();
+	at91_add_device_spi(pcontrol_g20_spi_devices,
+		ARRAY_SIZE(pcontrol_g20_spi_devices));
+	at91_add_device_udc(&pcontrol_g20_udc_data);
+	at91_gpio_leds(pcontrol_g20_leds,
+		ARRAY_SIZE(pcontrol_g20_leds));
+	/* piggyback  A2 */
+	at91_set_gpio_output(AT91_PIN_PB31, 1);
+}
+
+
+MACHINE_START(PCONTROL_G20, "PControl G20")
+	/* Maintainer: pgsellmann@portner-elektronik.at */
+	.boot_params	= AT91_SDRAM_BASE + 0x100,
+	.timer		= &at91sam926x_timer,
+	.map_io		= pcontrol_g20_map_io,
+	.init_irq	= init_irq,
+	.init_machine	= pcontrol_g20_board_init,
+MACHINE_END