diff options
Diffstat (limited to 'kernel/arch/sh/boards/mach-se/7343')
-rw-r--r-- | kernel/arch/sh/boards/mach-se/7343/Makefile | 5 | ||||
-rw-r--r-- | kernel/arch/sh/boards/mach-se/7343/irq.c | 126 | ||||
-rw-r--r-- | kernel/arch/sh/boards/mach-se/7343/setup.c | 181 |
3 files changed, 312 insertions, 0 deletions
diff --git a/kernel/arch/sh/boards/mach-se/7343/Makefile b/kernel/arch/sh/boards/mach-se/7343/Makefile new file mode 100644 index 000000000..4c3666a93 --- /dev/null +++ b/kernel/arch/sh/boards/mach-se/7343/Makefile @@ -0,0 +1,5 @@ +# +# Makefile for the 7343 SolutionEngine specific parts of the kernel +# + +obj-y := setup.o irq.o diff --git a/kernel/arch/sh/boards/mach-se/7343/irq.c b/kernel/arch/sh/boards/mach-se/7343/irq.c new file mode 100644 index 000000000..1087dba9b --- /dev/null +++ b/kernel/arch/sh/boards/mach-se/7343/irq.c @@ -0,0 +1,126 @@ +/* + * Hitachi UL SolutionEngine 7343 FPGA IRQ Support. + * + * Copyright (C) 2008 Yoshihiro Shimoda + * Copyright (C) 2012 Paul Mundt + * + * Based on linux/arch/sh/boards/se/7343/irq.c + * Copyright (C) 2007 Nobuhiro Iwamatsu + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ +#define DRV_NAME "SE7343-FPGA" +#define pr_fmt(fmt) DRV_NAME ": " fmt + +#include <linux/init.h> +#include <linux/irq.h> +#include <linux/interrupt.h> +#include <linux/irqdomain.h> +#include <linux/io.h> +#include <asm/sizes.h> +#include <mach-se/mach/se7343.h> + +#define PA_CPLD_BASE_ADDR 0x11400000 +#define PA_CPLD_ST_REG 0x08 /* CPLD Interrupt status register */ +#define PA_CPLD_IMSK_REG 0x0a /* CPLD Interrupt mask register */ + +static void __iomem *se7343_irq_regs; +struct irq_domain *se7343_irq_domain; + +static void se7343_irq_demux(unsigned int irq, struct irq_desc *desc) +{ + struct irq_data *data = irq_get_irq_data(irq); + struct irq_chip *chip = irq_data_get_irq_chip(data); + unsigned long mask; + int bit; + + chip->irq_mask_ack(data); + + mask = ioread16(se7343_irq_regs + PA_CPLD_ST_REG); + + for_each_set_bit(bit, &mask, SE7343_FPGA_IRQ_NR) + generic_handle_irq(irq_linear_revmap(se7343_irq_domain, bit)); + + chip->irq_unmask(data); +} + +static void __init se7343_domain_init(void) +{ + int i; + + se7343_irq_domain = irq_domain_add_linear(NULL, SE7343_FPGA_IRQ_NR, + &irq_domain_simple_ops, NULL); + if (unlikely(!se7343_irq_domain)) { + printk("Failed to get IRQ domain\n"); + return; + } + + for (i = 0; i < SE7343_FPGA_IRQ_NR; i++) { + int irq = irq_create_mapping(se7343_irq_domain, i); + + if (unlikely(irq == 0)) { + printk("Failed to allocate IRQ %d\n", i); + return; + } + } +} + +static void __init se7343_gc_init(void) +{ + struct irq_chip_generic *gc; + struct irq_chip_type *ct; + unsigned int irq_base; + + irq_base = irq_linear_revmap(se7343_irq_domain, 0); + + gc = irq_alloc_generic_chip(DRV_NAME, 1, irq_base, se7343_irq_regs, + handle_level_irq); + if (unlikely(!gc)) + return; + + ct = gc->chip_types; + ct->chip.irq_mask = irq_gc_mask_set_bit; + ct->chip.irq_unmask = irq_gc_mask_clr_bit; + + ct->regs.mask = PA_CPLD_IMSK_REG; + + irq_setup_generic_chip(gc, IRQ_MSK(SE7343_FPGA_IRQ_NR), + IRQ_GC_INIT_MASK_CACHE, + IRQ_NOREQUEST | IRQ_NOPROBE, 0); + + irq_set_chained_handler(IRQ0_IRQ, se7343_irq_demux); + irq_set_irq_type(IRQ0_IRQ, IRQ_TYPE_LEVEL_LOW); + + irq_set_chained_handler(IRQ1_IRQ, se7343_irq_demux); + irq_set_irq_type(IRQ1_IRQ, IRQ_TYPE_LEVEL_LOW); + + irq_set_chained_handler(IRQ4_IRQ, se7343_irq_demux); + irq_set_irq_type(IRQ4_IRQ, IRQ_TYPE_LEVEL_LOW); + + irq_set_chained_handler(IRQ5_IRQ, se7343_irq_demux); + irq_set_irq_type(IRQ5_IRQ, IRQ_TYPE_LEVEL_LOW); +} + +/* + * Initialize IRQ setting + */ +void __init init_7343se_IRQ(void) +{ + se7343_irq_regs = ioremap(PA_CPLD_BASE_ADDR, SZ_16); + if (unlikely(!se7343_irq_regs)) { + pr_err("Failed to remap CPLD\n"); + return; + } + + /* + * All FPGA IRQs disabled by default + */ + iowrite16(0, se7343_irq_regs + PA_CPLD_IMSK_REG); + + __raw_writew(0x2000, 0xb03fffec); /* mrshpc irq enable */ + + se7343_domain_init(); + se7343_gc_init(); +} diff --git a/kernel/arch/sh/boards/mach-se/7343/setup.c b/kernel/arch/sh/boards/mach-se/7343/setup.c new file mode 100644 index 000000000..8ce4f2a20 --- /dev/null +++ b/kernel/arch/sh/boards/mach-se/7343/setup.c @@ -0,0 +1,181 @@ +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/mtd/physmap.h> +#include <linux/serial_8250.h> +#include <linux/serial_reg.h> +#include <linux/usb/isp116x.h> +#include <linux/delay.h> +#include <linux/irqdomain.h> +#include <asm/machvec.h> +#include <mach-se/mach/se7343.h> +#include <asm/heartbeat.h> +#include <asm/irq.h> +#include <asm/io.h> + +static struct resource heartbeat_resource = { + .start = PA_LED, + .end = PA_LED, + .flags = IORESOURCE_MEM | IORESOURCE_MEM_16BIT, +}; + +static struct platform_device heartbeat_device = { + .name = "heartbeat", + .id = -1, + .num_resources = 1, + .resource = &heartbeat_resource, +}; + +static struct mtd_partition nor_flash_partitions[] = { + { + .name = "loader", + .offset = 0x00000000, + .size = 128 * 1024, + }, + { + .name = "rootfs", + .offset = MTDPART_OFS_APPEND, + .size = 31 * 1024 * 1024, + }, + { + .name = "data", + .offset = MTDPART_OFS_APPEND, + .size = MTDPART_SIZ_FULL, + }, +}; + +static struct physmap_flash_data nor_flash_data = { + .width = 2, + .parts = nor_flash_partitions, + .nr_parts = ARRAY_SIZE(nor_flash_partitions), +}; + +static struct resource nor_flash_resources[] = { + [0] = { + .start = 0x00000000, + .end = 0x01ffffff, + .flags = IORESOURCE_MEM, + } +}; + +static struct platform_device nor_flash_device = { + .name = "physmap-flash", + .dev = { + .platform_data = &nor_flash_data, + }, + .num_resources = ARRAY_SIZE(nor_flash_resources), + .resource = nor_flash_resources, +}; + +#define ST16C2550C_FLAGS (UPF_BOOT_AUTOCONF | UPF_IOREMAP) + +static struct plat_serial8250_port serial_platform_data[] = { + [0] = { + .iotype = UPIO_MEM, + .mapbase = 0x16000000, + .regshift = 1, + .flags = ST16C2550C_FLAGS, + .uartclk = 7372800, + }, + [1] = { + .iotype = UPIO_MEM, + .mapbase = 0x17000000, + .regshift = 1, + .flags = ST16C2550C_FLAGS, + .uartclk = 7372800, + }, + { }, +}; + +static struct platform_device uart_device = { + .name = "serial8250", + .id = PLAT8250_DEV_PLATFORM, + .dev = { + .platform_data = serial_platform_data, + }, +}; + +static void isp116x_delay(struct device *dev, int delay) +{ + ndelay(delay); +} + +static struct resource usb_resources[] = { + [0] = { + .start = 0x11800000, + .end = 0x11800001, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = 0x11800002, + .end = 0x11800003, + .flags = IORESOURCE_MEM, + }, + [2] = { + /* Filled in later */ + .flags = IORESOURCE_IRQ, + }, +}; + +static struct isp116x_platform_data usb_platform_data = { + .sel15Kres = 1, + .oc_enable = 1, + .int_act_high = 0, + .int_edge_triggered = 0, + .remote_wakeup_enable = 0, + .delay = isp116x_delay, +}; + +static struct platform_device usb_device = { + .name = "isp116x-hcd", + .id = -1, + .num_resources = ARRAY_SIZE(usb_resources), + .resource = usb_resources, + .dev = { + .platform_data = &usb_platform_data, + }, + +}; + +static struct platform_device *sh7343se_platform_devices[] __initdata = { + &heartbeat_device, + &nor_flash_device, + &uart_device, + &usb_device, +}; + +static int __init sh7343se_devices_setup(void) +{ + /* Wire-up dynamic vectors */ + serial_platform_data[0].irq = irq_find_mapping(se7343_irq_domain, + SE7343_FPGA_IRQ_UARTA); + serial_platform_data[1].irq = irq_find_mapping(se7343_irq_domain, + SE7343_FPGA_IRQ_UARTB); + usb_resources[2].start = usb_resources[2].end = + irq_find_mapping(se7343_irq_domain, SE7343_FPGA_IRQ_USB); + + return platform_add_devices(sh7343se_platform_devices, + ARRAY_SIZE(sh7343se_platform_devices)); +} +device_initcall(sh7343se_devices_setup); + +/* + * Initialize the board + */ +static void __init sh7343se_setup(char **cmdline_p) +{ + __raw_writew(0xf900, FPGA_OUT); /* FPGA */ + + __raw_writew(0x0002, PORT_PECR); /* PORT E 1 = IRQ5 */ + __raw_writew(0x0020, PORT_PSELD); + + printk(KERN_INFO "MS7343CP01 Setup...done\n"); +} + +/* + * The Machine Vector + */ +static struct sh_machine_vector mv_7343se __initmv = { + .mv_name = "SolutionEngine 7343", + .mv_setup = sh7343se_setup, + .mv_init_irq = init_7343se_IRQ, +}; 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