diff options
Diffstat (limited to 'arch/arm/plat-mxc')
61 files changed, 1098 insertions, 2114 deletions
diff --git a/arch/arm/plat-mxc/3ds_debugboard.c b/arch/arm/plat-mxc/3ds_debugboard.c new file mode 100644 index 00000000000..639c54a0799 --- /dev/null +++ b/arch/arm/plat-mxc/3ds_debugboard.c @@ -0,0 +1,202 @@ +/* + * Copyright 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved. + * Copyright (C) 2010 Jason Wang <jason77.wang@gmail.com> + * + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ + +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/io.h> +#include <linux/platform_device.h> +#include <linux/gpio.h> +#include <linux/smsc911x.h> + +#include <mach/hardware.h> + +/* LAN9217 ethernet base address */ +#define LAN9217_BASE_ADDR(n) (n + 0x0) +/* External UART */ +#define UARTA_BASE_ADDR(n) (n + 0x8000) +#define UARTB_BASE_ADDR(n) (n + 0x10000) + +#define BOARD_IO_ADDR(n) (n + 0x20000) +/* LED switchs */ +#define LED_SWITCH_REG 0x00 +/* buttons */ +#define SWITCH_BUTTONS_REG 0x08 +/* status, interrupt */ +#define INTR_STATUS_REG 0x10 +#define INTR_MASK_REG 0x38 +#define INTR_RESET_REG 0x20 +/* magic word for debug CPLD */ +#define MAGIC_NUMBER1_REG 0x40 +#define MAGIC_NUMBER2_REG 0x48 +/* CPLD code version */ +#define CPLD_CODE_VER_REG 0x50 +/* magic word for debug CPLD */ +#define MAGIC_NUMBER3_REG 0x58 +/* module reset register*/ +#define MODULE_RESET_REG 0x60 +/* CPU ID and Personality ID */ +#define MCU_BOARD_ID_REG 0x68 + +#define MXC_IRQ_TO_EXPIO(irq) ((irq) - MXC_BOARD_IRQ_START) +#define MXC_IRQ_TO_GPIO(irq) ((irq) - MXC_INTERNAL_IRQS) + +#define MXC_EXP_IO_BASE (MXC_BOARD_IRQ_START) +#define MXC_MAX_EXP_IO_LINES 16 + +/* interrupts like external uart , external ethernet etc*/ +#define EXPIO_INT_ENET (MXC_BOARD_IRQ_START + 0) +#define EXPIO_INT_XUART_A (MXC_BOARD_IRQ_START + 1) +#define EXPIO_INT_XUART_B (MXC_BOARD_IRQ_START + 2) +#define EXPIO_INT_BUTTON_A (MXC_BOARD_IRQ_START + 3) +#define EXPIO_INT_BUTTON_B (MXC_BOARD_IRQ_START + 4) + +static void __iomem *brd_io; +static void expio_ack_irq(u32 irq); + +static struct resource smsc911x_resources[] = { + { + .flags = IORESOURCE_MEM, + } , { + .start = EXPIO_INT_ENET, + .end = EXPIO_INT_ENET, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct smsc911x_platform_config smsc911x_config = { + .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW, + .flags = SMSC911X_USE_32BIT | SMSC911X_FORCE_INTERNAL_PHY, +}; + +static struct platform_device smsc_lan9217_device = { + .name = "smsc911x", + .id = 0, + .dev = { + .platform_data = &smsc911x_config, + }, + .num_resources = ARRAY_SIZE(smsc911x_resources), + .resource = smsc911x_resources, +}; + +static void mxc_expio_irq_handler(u32 irq, struct irq_desc *desc) +{ + u32 imr_val; + u32 int_valid; + u32 expio_irq; + + desc->chip->mask(irq); /* irq = gpio irq number */ + + imr_val = __raw_readw(brd_io + INTR_MASK_REG); + int_valid = __raw_readw(brd_io + INTR_STATUS_REG) & ~imr_val; + + expio_irq = MXC_BOARD_IRQ_START; + for (; int_valid != 0; int_valid >>= 1, expio_irq++) { + struct irq_desc *d; + if ((int_valid & 1) == 0) + continue; + d = irq_desc + expio_irq; + if (unlikely(!(d->handle_irq))) + pr_err("\nEXPIO irq: %d unhandled\n", expio_irq); + else + d->handle_irq(expio_irq, d); + } + + desc->chip->ack(irq); + desc->chip->unmask(irq); +} + +/* + * Disable an expio pin's interrupt by setting the bit in the imr. + * Irq is an expio virtual irq number + */ +static void expio_mask_irq(u32 irq) +{ + u16 reg; + u32 expio = MXC_IRQ_TO_EXPIO(irq); + + reg = __raw_readw(brd_io + INTR_MASK_REG); + reg |= (1 << expio); + __raw_writew(reg, brd_io + INTR_MASK_REG); +} + +static void expio_ack_irq(u32 irq) +{ + u32 expio = MXC_IRQ_TO_EXPIO(irq); + + __raw_writew(1 << expio, brd_io + INTR_RESET_REG); + __raw_writew(0, brd_io + INTR_RESET_REG); + expio_mask_irq(irq); +} + +static void expio_unmask_irq(u32 irq) +{ + u16 reg; + u32 expio = MXC_IRQ_TO_EXPIO(irq); + + reg = __raw_readw(brd_io + INTR_MASK_REG); + reg &= ~(1 << expio); + __raw_writew(reg, brd_io + INTR_MASK_REG); +} + +static struct irq_chip expio_irq_chip = { + .ack = expio_ack_irq, + .mask = expio_mask_irq, + .unmask = expio_unmask_irq, +}; + +int __init mxc_expio_init(u32 base, u32 p_irq) +{ + int i; + + brd_io = ioremap(BOARD_IO_ADDR(base), SZ_4K); + if (brd_io == NULL) + return -ENOMEM; + + if ((__raw_readw(brd_io + MAGIC_NUMBER1_REG) != 0xAAAA) || + (__raw_readw(brd_io + MAGIC_NUMBER2_REG) != 0x5555) || + (__raw_readw(brd_io + MAGIC_NUMBER3_REG) != 0xCAFE)) { + pr_info("3-Stack Debug board not detected\n"); + iounmap(brd_io); + brd_io = NULL; + return -ENODEV; + } + + pr_info("3-Stack Debug board detected, rev = 0x%04X\n", + readw(brd_io + CPLD_CODE_VER_REG)); + + /* + * Configure INT line as GPIO input + */ + gpio_request(MXC_IRQ_TO_GPIO(p_irq), "expio_pirq"); + gpio_direction_input(MXC_IRQ_TO_GPIO(p_irq)); + + /* disable the interrupt and clear the status */ + __raw_writew(0, brd_io + INTR_MASK_REG); + __raw_writew(0xFFFF, brd_io + INTR_RESET_REG); + __raw_writew(0, brd_io + INTR_RESET_REG); + __raw_writew(0x1F, brd_io + INTR_MASK_REG); + for (i = MXC_EXP_IO_BASE; + i < (MXC_EXP_IO_BASE + MXC_MAX_EXP_IO_LINES); i++) { + set_irq_chip(i, &expio_irq_chip); + set_irq_handler(i, handle_level_irq); + set_irq_flags(i, IRQF_VALID); + } + set_irq_type(p_irq, IRQF_TRIGGER_LOW); + set_irq_chained_handler(p_irq, mxc_expio_irq_handler); + + /* Register Lan device on the debugboard */ + smsc911x_resources[0].start = LAN9217_BASE_ADDR(base); + smsc911x_resources[0].end = LAN9217_BASE_ADDR(base) + 0x100 - 1; + platform_device_register(&smsc_lan9217_device); + + return 0; +} diff --git a/arch/arm/plat-mxc/Kconfig b/arch/arm/plat-mxc/Kconfig index 7f7ad6f289b..0527e65318f 100644 --- a/arch/arm/plat-mxc/Kconfig +++ b/arch/arm/plat-mxc/Kconfig @@ -1,5 +1,7 @@ if ARCH_MXC +source "arch/arm/plat-mxc/devices/Kconfig" + menu "Freescale MXC Implementations" choice @@ -8,15 +10,12 @@ choice config ARCH_MX1 bool "MX1-based" - select CPU_ARM920T - select IMX_HAVE_IOMUX_V1 + select SOC_IMX1 help This enables support for systems based on the Freescale i.MX1 family config ARCH_MX2 bool "MX2-based" - select CPU_ARM926T - select IMX_HAVE_IOMUX_V1 help This enables support for systems based on the Freescale i.MX2 family @@ -25,6 +24,7 @@ config ARCH_MX25 select CPU_ARM926T select ARCH_MXC_IOMUX_V3 select HAVE_FB_IMX + select ARCH_MXC_AUDMUX_V2 help This enables support for systems based on the Freescale i.MX25 family @@ -48,8 +48,7 @@ config ARCH_MX5 endchoice -source "arch/arm/mach-mx1/Kconfig" -source "arch/arm/mach-mx2/Kconfig" +source "arch/arm/mach-imx/Kconfig" source "arch/arm/mach-mx3/Kconfig" source "arch/arm/mach-mx25/Kconfig" source "arch/arm/mach-mxc91231/Kconfig" @@ -81,6 +80,17 @@ config MXC_PWM help Enable support for the i.MX PWM controller(s). +config MXC_DEBUG_BOARD + bool "Enable MXC debug board(for 3-stack)" + help + The debug board is an integral part of the MXC 3-stack(PDK) + platforms, it can be attached or removed from the peripheral + board. On debug board, several debug devices(ethernet, UART, + buttons, LEDs and JTAG) are implemented. Between the MCU and + these devices, a CPLD is added as a bridge which performs + data/address de-multiplexing and decode, signal level shift, + interrupt control and various board functions. + config MXC_ULPI bool diff --git a/arch/arm/plat-mxc/Makefile b/arch/arm/plat-mxc/Makefile index 895bc3c5e0c..78d405ed861 100644 --- a/arch/arm/plat-mxc/Makefile +++ b/arch/arm/plat-mxc/Makefile @@ -8,8 +8,6 @@ obj-y := irq.o clock.o gpio.o time.o devices.o cpu.o system.o # MX51 uses the TZIC interrupt controller, older platforms use AVIC (irq.o) obj-$(CONFIG_MXC_TZIC) += tzic.o -obj-$(CONFIG_ARCH_MX1) += dma-mx1-mx2.o -obj-$(CONFIG_ARCH_MX2) += dma-mx1-mx2.o obj-$(CONFIG_IMX_HAVE_IOMUX_V1) += iomux-v1.o obj-$(CONFIG_ARCH_MXC_IOMUX_V3) += iomux-v3.o obj-$(CONFIG_MXC_PWM) += pwm.o @@ -17,7 +15,10 @@ obj-$(CONFIG_USB_EHCI_MXC) += ehci.o obj-$(CONFIG_MXC_ULPI) += ulpi.o obj-$(CONFIG_ARCH_MXC_AUDMUX_V1) += audmux-v1.o obj-$(CONFIG_ARCH_MXC_AUDMUX_V2) += audmux-v2.o +obj-$(CONFIG_MXC_DEBUG_BOARD) += 3ds_debugboard.o ifdef CONFIG_SND_IMX_SOC obj-y += ssi-fiq.o obj-y += ssi-fiq-ksym.o endif + +obj-y += devices/ diff --git a/arch/arm/plat-mxc/audmux-v1.c b/arch/arm/plat-mxc/audmux-v1.c index b62917ca3f9..1180bef7664 100644 --- a/arch/arm/plat-mxc/audmux-v1.c +++ b/arch/arm/plat-mxc/audmux-v1.c @@ -13,10 +13,6 @@ * 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include <linux/module.h> diff --git a/arch/arm/plat-mxc/audmux-v2.c b/arch/arm/plat-mxc/audmux-v2.c index 0c2cc5cd4d8..f9e7cdbd000 100644 --- a/arch/arm/plat-mxc/audmux-v2.c +++ b/arch/arm/plat-mxc/audmux-v2.c @@ -13,10 +13,6 @@ * 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include <linux/module.h> @@ -191,6 +187,7 @@ static int mxc_audmux_v2_init(void) { int ret; +#if defined(CONFIG_ARCH_MX3) if (cpu_is_mx31()) audmux_base = MX31_IO_ADDRESS(MX31_AUDMUX_BASE_ADDR); @@ -204,7 +201,19 @@ static int mxc_audmux_v2_init(void) } audmux_base = MX35_IO_ADDRESS(MX35_AUDMUX_BASE_ADDR); } - +#endif +#if defined(CONFIG_ARCH_MX25) + if (cpu_is_mx25()) { + audmux_clk = clk_get(NULL, "audmux"); + if (IS_ERR(audmux_clk)) { + ret = PTR_ERR(audmux_clk); + printk(KERN_ERR "%s: cannot get clock: %d\n", __func__, + ret); + return ret; + } + audmux_base = MX25_IO_ADDRESS(MX25_AUDMUX_BASE_ADDR); + } +#endif audmux_debugfs_init(); return 0; diff --git a/arch/arm/plat-mxc/clock.c b/arch/arm/plat-mxc/clock.c index 323ff8ccc87..2ed3ab173ad 100644 --- a/arch/arm/plat-mxc/clock.c +++ b/arch/arm/plat-mxc/clock.c @@ -52,13 +52,14 @@ static void __clk_disable(struct clk *clk) { if (clk == NULL || IS_ERR(clk)) return; - - __clk_disable(clk->parent); - __clk_disable(clk->secondary); - WARN_ON(!clk->usecount); - if (!(--clk->usecount) && clk->disable) - clk->disable(clk); + + if (!(--clk->usecount)) { + if (clk->disable) + clk->disable(clk); + __clk_disable(clk->parent); + __clk_disable(clk->secondary); + } } static int __clk_enable(struct clk *clk) @@ -66,12 +67,13 @@ static int __clk_enable(struct clk *clk) if (clk == NULL || IS_ERR(clk)) return -EINVAL; - __clk_enable(clk->parent); - __clk_enable(clk->secondary); - - if (clk->usecount++ == 0 && clk->enable) - clk->enable(clk); + if (clk->usecount++ == 0) { + __clk_enable(clk->parent); + __clk_enable(clk->secondary); + if (clk->enable) + clk->enable(clk); + } return 0; } @@ -160,17 +162,28 @@ EXPORT_SYMBOL(clk_set_rate); int clk_set_parent(struct clk *clk, struct clk *parent) { int ret = -EINVAL; + struct clk *old; if (clk == NULL || IS_ERR(clk) || parent == NULL || IS_ERR(parent) || clk->set_parent == NULL) return ret; + if (clk->usecount) + clk_enable(parent); + mutex_lock(&clocks_mutex); ret = clk->set_parent(clk, parent); - if (ret == 0) + if (ret == 0) { + old = clk->parent; clk->parent = parent; + } else { + old = parent; + } mutex_unlock(&clocks_mutex); + if (clk->usecount) + clk_disable(old); + return ret; } EXPORT_SYMBOL(clk_set_parent); diff --git a/arch/arm/plat-mxc/devices.c b/arch/arm/plat-mxc/devices.c index 56f2fb5cc45..735776d8495 100644 --- a/arch/arm/plat-mxc/devices.c +++ b/arch/arm/plat-mxc/devices.c @@ -18,6 +18,7 @@ #include <linux/kernel.h> #include <linux/init.h> +#include <linux/err.h> #include <linux/platform_device.h> #include <mach/common.h> @@ -35,3 +36,35 @@ int __init mxc_register_device(struct platform_device *pdev, void *data) return ret; } +struct platform_device *__init imx_add_platform_device(const char *name, int id, + const struct resource *res, unsigned int num_resources, + const void *data, size_t size_data) +{ + int ret = -ENOMEM; + struct platform_device *pdev; + + pdev = platform_device_alloc(name, id); + if (!pdev) + goto err; + + if (res) { + ret = platform_device_add_resources(pdev, res, num_resources); + if (ret) + goto err; + } + + if (data) { + ret = platform_device_add_data(pdev, data, size_data); + if (ret) + goto err; + } + + ret = platform_device_add(pdev); + if (ret) { +err: + platform_device_put(pdev); + return ERR_PTR(ret); + } + + return pdev; +} diff --git a/arch/arm/plat-mxc/devices/Kconfig b/arch/arm/plat-mxc/devices/Kconfig new file mode 100644 index 00000000000..9ab784b776f --- /dev/null +++ b/arch/arm/plat-mxc/devices/Kconfig @@ -0,0 +1,15 @@ +config IMX_HAVE_PLATFORM_FLEXCAN + select HAVE_CAN_FLEXCAN + bool + +config IMX_HAVE_PLATFORM_IMX_I2C + bool + +config IMX_HAVE_PLATFORM_IMX_UART + bool + +config IMX_HAVE_PLATFORM_MXC_NAND + bool + +config IMX_HAVE_PLATFORM_SPI_IMX + bool diff --git a/arch/arm/plat-mxc/devices/Makefile b/arch/arm/plat-mxc/devices/Makefile new file mode 100644 index 00000000000..347da5161f7 --- /dev/null +++ b/arch/arm/plat-mxc/devices/Makefile @@ -0,0 +1,8 @@ +ifdef CONFIG_CAN_FLEXCAN +# the ifdef can be removed once the flexcan driver has been merged +obj-$(CONFIG_IMX_HAVE_PLATFORM_FLEXCAN) += platform-flexcan.o +endif +obj-$(CONFIG_IMX_HAVE_PLATFORM_IMX_I2C) += platform-imx-i2c.o +obj-$(CONFIG_IMX_HAVE_PLATFORM_IMX_UART) += platform-imx-uart.o +obj-$(CONFIG_IMX_HAVE_PLATFORM_MXC_NAND) += platform-mxc_nand.o +obj-$(CONFIG_IMX_HAVE_PLATFORM_SPI_IMX) += platform-spi_imx.o diff --git a/arch/arm/plat-mxc/devices/platform-flexcan.c b/arch/arm/plat-mxc/devices/platform-flexcan.c new file mode 100644 index 00000000000..5e97a01f14f --- /dev/null +++ b/arch/arm/plat-mxc/devices/platform-flexcan.c @@ -0,0 +1,30 @@ +/* + * Copyright (C) 2010 Pengutronix, Marc Kleine-Budde <kernel@pengutronix.de> + * + * This program is free software; you can redistribute it and/or modify it under + * the terms of the GNU General Public License version 2 as published by the + * Free Software Foundation. + */ + +#include <mach/devices-common.h> + +struct platform_device *__init imx_add_flexcan(int id, + resource_size_t iobase, resource_size_t iosize, + resource_size_t irq, + const struct flexcan_platform_data *pdata) +{ + struct resource res[] = { + { + .start = iobase, + .end = iobase + iosize - 1, + .flags = IORESOURCE_MEM, + }, { + .start = irq, + .end = irq, + .flags = IORESOURCE_IRQ, + }, + }; + + return imx_add_platform_device("flexcan", id, res, ARRAY_SIZE(res), + pdata, sizeof(*pdata)); +} diff --git a/arch/arm/plat-mxc/devices/platform-imx-i2c.c b/arch/arm/plat-mxc/devices/platform-imx-i2c.c new file mode 100644 index 00000000000..d0af9f7d8ae --- /dev/null +++ b/arch/arm/plat-mxc/devices/platform-imx-i2c.c @@ -0,0 +1,29 @@ +/* + * Copyright (C) 2009-2010 Pengutronix + * Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de> + * + * This program is free software; you can redistribute it and/or modify it under + * the terms of the GNU General Public License version |