MXC: mx21ads base support

[PATCH v6] MXC: mx21ads base support

Base machine support for the  Freescale i.MX21ADS
(M9328MX21ADSE) Application Development System.

Signed-off-by: Ivo Clarysse <ivo.clarysse@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

3 files changed, 294 insertions, 0 deletions

diff --git a/arch/arm/mach-mx2/Kconfig b/arch/arm/mach-mx2/Kconfig
index 42a788842f4..7ce3712ab8c 100644
--- a/arch/arm/mach-mx2/Kconfig
+++ b/arch/arm/mach-mx2/Kconfig
@@ -18,6 +18,13 @@ endchoice
 
 comment "MX2 platforms:"
 
+config MACH_MX21ADS
+	bool "MX21ADS platform"
+	depends on MACH_MX21
+	help
+	  Include support for MX21ADS platform. This includes specific
+	  configurations for the board and its peripherals.
+
 config MACH_MX27ADS
 	bool "MX27ADS platform"
 	depends on MACH_MX27
diff --git a/arch/arm/mach-mx2/Makefile b/arch/arm/mach-mx2/Makefile
index 950649a9154..e583754feba 100644
--- a/arch/arm/mach-mx2/Makefile
+++ b/arch/arm/mach-mx2/Makefile
@@ -11,6 +11,7 @@ obj-$(CONFIG_MACH_MX21) += clock_imx21.o
 obj-$(CONFIG_MACH_MX27) += cpu_imx27.o
 obj-$(CONFIG_MACH_MX27) += clock_imx27.o
 
+obj-$(CONFIG_MACH_MX21ADS) += mx21ads.o
 obj-$(CONFIG_MACH_MX27ADS) += mx27ads.o
 obj-$(CONFIG_MACH_PCM038) += pcm038.o
 obj-$(CONFIG_MACH_PCM970_BASEBOARD) += pcm970-baseboard.o
diff --git a/arch/arm/mach-mx2/mx21ads.c b/arch/arm/mach-mx2/mx21ads.c
new file mode 100644
index 00000000000..a5ee461cb40
--- /dev/null
+++ b/arch/arm/mach-mx2/mx21ads.c
@@ -0,0 +1,286 @@
+/*
+ *  Copyright (C) 2000 Deep Blue Solutions Ltd
+ *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
+ *  Copyright 2006-2007 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * 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 <linux/platform_device.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/physmap.h>
+#include <linux/gpio.h>
+#include <mach/common.h>
+#include <mach/hardware.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/time.h>
+#include <asm/mach/map.h>
+#include <mach/imx-uart.h>
+#include <mach/imxfb.h>
+#include <mach/iomux.h>
+#include <mach/mxc_nand.h>
+#include <mach/mmc.h>
+#include <mach/board-mx21ads.h>
+
+#include "devices.h"
+
+static unsigned int mx21ads_pins[] = {
+
+	/* CS8900A */
+	(GPIO_PORTE | GPIO_GPIO | GPIO_IN | 11),
+
+	/* UART1 */
+	PE12_PF_UART1_TXD,
+	PE13_PF_UART1_RXD,
+	PE14_PF_UART1_CTS,
+	PE15_PF_UART1_RTS,
+
+	/* UART3 (IrDA) - only TXD and RXD */
+	PE8_PF_UART3_TXD,
+	PE9_PF_UART3_RXD,
+
+	/* UART4 */
+	PB26_AF_UART4_RTS,
+	PB28_AF_UART4_TXD,
+	PB29_AF_UART4_CTS,
+	PB31_AF_UART4_RXD,
+
+	/* LCDC */
+	PA5_PF_LSCLK,
+	PA6_PF_LD0,
+	PA7_PF_LD1,
+	PA8_PF_LD2,
+	PA9_PF_LD3,
+	PA10_PF_LD4,
+	PA11_PF_LD5,
+	PA12_PF_LD6,
+	PA13_PF_LD7,
+	PA14_PF_LD8,
+	PA15_PF_LD9,
+	PA16_PF_LD10,
+	PA17_PF_LD11,
+	PA18_PF_LD12,
+	PA19_PF_LD13,
+	PA20_PF_LD14,
+	PA21_PF_LD15,
+	PA22_PF_LD16,
+	PA24_PF_REV,     /* Sharp panel dedicated signal */
+	PA25_PF_CLS,     /* Sharp panel dedicated signal */
+	PA26_PF_PS,      /* Sharp panel dedicated signal */
+	PA27_PF_SPL_SPR, /* Sharp panel dedicated signal */
+	PA28_PF_HSYNC,
+	PA29_PF_VSYNC,
+	PA30_PF_CONTRAST,
+	PA31_PF_OE_ACD,
+
+	/* MMC/SDHC */
+	PE18_PF_SD1_D0,
+	PE19_PF_SD1_D1,
+	PE20_PF_SD1_D2,
+	PE21_PF_SD1_D3,
+	PE22_PF_SD1_CMD,
+	PE23_PF_SD1_CLK,
+
+	/* NFC */
+	PF0_PF_NRFB,
+	PF1_PF_NFCE,
+	PF2_PF_NFWP,
+	PF3_PF_NFCLE,
+	PF4_PF_NFALE,
+	PF5_PF_NFRE,
+	PF6_PF_NFWE,
+	PF7_PF_NFIO0,
+	PF8_PF_NFIO1,
+	PF9_PF_NFIO2,
+	PF10_PF_NFIO3,
+	PF11_PF_NFIO4,
+	PF12_PF_NFIO5,
+	PF13_PF_NFIO6,
+	PF14_PF_NFIO7,
+};
+
+/* ADS's NOR flash: 2x AM29BDS128HE9VKI on 32-bit bus */
+static struct physmap_flash_data mx21ads_flash_data = {
+	.width = 4,
+};
+
+static struct resource mx21ads_flash_resource = {
+	.start = CS0_BASE_ADDR,
+	.end = CS0_BASE_ADDR + 0x02000000 - 1,
+	.flags = IORESOURCE_MEM,
+};
+
+static struct platform_device mx21ads_nor_mtd_device = {
+	.name = "physmap-flash",
+	.id = 0,
+	.dev = {
+		.platform_data = &mx21ads_flash_data,
+	},
+	.num_resources = 1,
+	.resource = &mx21ads_flash_resource,
+};
+
+static struct imxuart_platform_data uart_pdata = {
+	.flags = IMXUART_HAVE_RTSCTS,
+};
+
+static struct imxuart_platform_data uart_norts_pdata = {
+};
+
+
+static int mx21ads_fb_init(struct platform_device *pdev)
+{
+	u16 tmp;
+
+	tmp = __raw_readw(MX21ADS_IO_REG);
+	tmp |= MX21ADS_IO_LCDON;
+	__raw_writew(tmp, MX21ADS_IO_REG);
+	return 0;
+}
+
+static void mx21ads_fb_exit(struct platform_device *pdev)
+{
+	u16 tmp;
+
+	tmp = __raw_readw(MX21ADS_IO_REG);
+	tmp &= ~MX21ADS_IO_LCDON;
+	__raw_writew(tmp, MX21ADS_IO_REG);
+}
+
+/*
+ * Connected is a portrait Sharp-QVGA display
+ * of type: LQ035Q7DB02
+ */
+static struct imx_fb_platform_data mx21ads_fb_data = {
+	.pixclock       = 188679, /* in ps */
+	.xres           = 240,
+	.yres           = 320,
+
+	.bpp            = 16,
+	.hsync_len      = 2,
+	.left_margin    = 6,
+	.right_margin   = 16,
+
+	.vsync_len      = 1,
+	.upper_margin   = 8,
+	.lower_margin   = 10,
+	.fixed_screen_cpu = 0,
+
+	.pcr            = 0xFB108BC7,
+	.pwmr           = 0x00A901ff,
+	.lscr1          = 0x00120300,
+	.dmacr          = 0x00020008,
+
+	.init = mx21ads_fb_init,
+	.exit = mx21ads_fb_exit,
+};
+
+static int mx21ads_sdhc_get_ro(struct device *dev)
+{
+	return (__raw_readw(MX21ADS_IO_REG) & MX21ADS_IO_SD_WP) ? 1 : 0;
+}
+
+static int mx21ads_sdhc_init(struct device *dev, irq_handler_t detect_irq,
+	void *data)
+{
+	int ret;
+
+	ret = request_irq(IRQ_GPIOD(25), detect_irq,
+		IRQF_TRIGGER_FALLING, "mmc-detect", data);
+	if (ret)
+		goto out;
+	return 0;
+out:
+	return ret;
+}
+
+static void mx21ads_sdhc_exit(struct device *dev, void *data)
+{
+	free_irq(IRQ_GPIOD(25), data);
+}
+
+static struct imxmmc_platform_data mx21ads_sdhc_pdata = {
+	.ocr_avail = MMC_VDD_29_30 | MMC_VDD_30_31, /* 3.0V */
+	.get_ro = mx21ads_sdhc_get_ro,
+	.init = mx21ads_sdhc_init,
+	.exit = mx21ads_sdhc_exit,
+};
+
+static struct mxc_nand_platform_data mx21ads_nand_board_info = {
+	.width = 1,
+	.hw_ecc = 1,
+};
+
+static struct map_desc mx21ads_io_desc[] __initdata = {
+	/*
+	 * Memory-mapped I/O on MX21ADS Base board:
+	 *   - CS8900A Ethernet controller
+	 *   - ST16C2552CJ UART
+	 *   - CPU and Base board version
+	 *   - Base board I/O register
+	 */
+	{
+		.virtual = MX21ADS_MMIO_BASE_ADDR,
+		.pfn = __phys_to_pfn(CS1_BASE_ADDR),
+		.length = MX21ADS_MMIO_SIZE,
+		.type = MT_DEVICE,
+	},
+};
+
+static void __init mx21ads_map_io(void)
+{
+	mx21_map_io();
+	iotable_init(mx21ads_io_desc, ARRAY_SIZE(mx21ads_io_desc));
+}
+
+static struct platform_device *platform_devices[] __initdata = {
+	&mx21ads_nor_mtd_device,
+};
+
+static void __init mx21ads_board_init(void)
+{
+	mxc_gpio_setup_multiple_pins(mx21ads_pins, ARRAY_SIZE(mx21ads_pins),
+			"mx21ads");
+
+	mxc_register_device(&mxc_uart_device0, &uart_pdata);
+	mxc_register_device(&mxc_uart_device2, &uart_norts_pdata);
+	mxc_register_device(&mxc_uart_device3, &uart_pdata);
+	mxc_register_device(&mxc_fb_device, &mx21ads_fb_data);
+	mxc_register_device(&mxc_sdhc_device0, &mx21ads_sdhc_pdata);
+	mxc_register_device(&mxc_nand_device, &mx21ads_nand_board_info);
+
+	platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
+}
+
+static void __init mx21ads_timer_init(void)
+{
+	mx21_clocks_init(32768, 26000000);
+}
+
+static struct sys_timer mx21ads_timer = {
+	.init	= mx21ads_timer_init,
+};
+
+MACHINE_START(MX21ADS, "Freescale i.MX21ADS")
+	/* maintainer: Freescale Semiconductor, Inc. */
+	.phys_io        = AIPI_BASE_ADDR,
+	.io_pg_offst    = ((AIPI_BASE_ADDR_VIRT) >> 18) & 0xfffc,
+	.boot_params    = PHYS_OFFSET + 0x100,
+	.map_io         = mx21ads_map_io,
+	.init_irq       = mxc_init_irq,
+	.init_machine   = mx21ads_board_init,
+	.timer          = &mx21ads_timer,
+MACHINE_END