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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/arm/mach-sa1100/badge4.c | |
download | kernel_samsung_smdk4412-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip kernel_samsung_smdk4412-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz kernel_samsung_smdk4412-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.bz2 |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'arch/arm/mach-sa1100/badge4.c')
-rw-r--r-- | arch/arm/mach-sa1100/badge4.c | 293 |
1 files changed, 293 insertions, 0 deletions
diff --git a/arch/arm/mach-sa1100/badge4.c b/arch/arm/mach-sa1100/badge4.c new file mode 100644 index 0000000..6a60b49 --- /dev/null +++ b/arch/arm/mach-sa1100/badge4.c @@ -0,0 +1,293 @@ +/* + * linux/arch/arm/mach-sa1100/badge4.c + * + * BadgePAD 4 specific initialization + * + * Tim Connors <connors@hpl.hp.com> + * Christopher Hoover <ch@hpl.hp.com> + * + * Copyright (C) 2002 Hewlett-Packard Company + * + * 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 <linux/module.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/device.h> +#include <linux/delay.h> +#include <linux/tty.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/partitions.h> +#include <linux/errno.h> + +#include <asm/hardware.h> +#include <asm/mach-types.h> +#include <asm/setup.h> +#include <asm/arch/irqs.h> + +#include <asm/mach/arch.h> +#include <asm/mach/flash.h> +#include <asm/mach/map.h> +#include <asm/hardware/sa1111.h> +#include <asm/mach/serial_sa1100.h> + +#include <asm/arch/badge4.h> + +#include "generic.h" + +static struct resource sa1111_resources[] = { + [0] = { + .start = BADGE4_SA1111_BASE, + .end = BADGE4_SA1111_BASE + 0x00001fff, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = BADGE4_IRQ_GPIO_SA1111, + .end = BADGE4_IRQ_GPIO_SA1111, + .flags = IORESOURCE_IRQ, + }, +}; + +static u64 sa1111_dmamask = 0xffffffffUL; + +static struct platform_device sa1111_device = { + .name = "sa1111", + .id = 0, + .dev = { + .dma_mask = &sa1111_dmamask, + .coherent_dma_mask = 0xffffffff, + }, + .num_resources = ARRAY_SIZE(sa1111_resources), + .resource = sa1111_resources, +}; + +static struct platform_device *devices[] __initdata = { + &sa1111_device, +}; + +static int __init badge4_sa1111_init(void) +{ + /* + * Ensure that the memory bus request/grant signals are setup, + * and the grant is held in its inactive state + */ + sa1110_mb_disable(); + + /* + * Probe for SA1111. + */ + return platform_add_devices(devices, ARRAY_SIZE(devices)); +} + + +/* + * 1 x Intel 28F320C3 Advanced+ Boot Block Flash (32 Mi bit) + * Eight 4 KiW Parameter Bottom Blocks (64 KiB) + * Sixty-three 32 KiW Main Blocks (4032 Ki b) + * + * <or> + * + * 1 x Intel 28F640C3 Advanced+ Boot Block Flash (64 Mi bit) + * Eight 4 KiW Parameter Bottom Blocks (64 KiB) + * One-hundred-twenty-seven 32 KiW Main Blocks (8128 Ki b) + */ +static struct mtd_partition badge4_partitions[] = { + { + .name = "BLOB boot loader", + .offset = 0, + .size = 0x0000A000 + }, { + .name = "params", + .offset = MTDPART_OFS_APPEND, + .size = 0x00006000 + }, { + .name = "root", + .offset = MTDPART_OFS_APPEND, + .size = MTDPART_SIZ_FULL + } +}; + +static struct flash_platform_data badge4_flash_data = { + .map_name = "cfi_probe", + .parts = badge4_partitions, + .nr_parts = ARRAY_SIZE(badge4_partitions), +}; + +static struct resource badge4_flash_resource = { + .start = SA1100_CS0_PHYS, + .end = SA1100_CS0_PHYS + SZ_64M - 1, + .flags = IORESOURCE_MEM, +}; + +static int five_v_on __initdata = 0; + +static int __init five_v_on_setup(char *ignore) +{ + five_v_on = 1; + return 1; +} +__setup("five_v_on", five_v_on_setup); + + +static int __init badge4_init(void) +{ + int ret; + + if (!machine_is_badge4()) + return -ENODEV; + + /* LCD */ + GPCR = (BADGE4_GPIO_LGP2 | BADGE4_GPIO_LGP3 | + BADGE4_GPIO_LGP4 | BADGE4_GPIO_LGP5 | + BADGE4_GPIO_LGP6 | BADGE4_GPIO_LGP7 | + BADGE4_GPIO_LGP8 | BADGE4_GPIO_LGP9 | + BADGE4_GPIO_GPA_VID | BADGE4_GPIO_GPB_VID | + BADGE4_GPIO_GPC_VID); + GPDR &= ~BADGE4_GPIO_INT_VID; + GPDR |= (BADGE4_GPIO_LGP2 | BADGE4_GPIO_LGP3 | + BADGE4_GPIO_LGP4 | BADGE4_GPIO_LGP5 | + BADGE4_GPIO_LGP6 | BADGE4_GPIO_LGP7 | + BADGE4_GPIO_LGP8 | BADGE4_GPIO_LGP9 | + BADGE4_GPIO_GPA_VID | BADGE4_GPIO_GPB_VID | + BADGE4_GPIO_GPC_VID); + + /* SDRAM SPD i2c */ + GPCR = (BADGE4_GPIO_SDSDA | BADGE4_GPIO_SDSCL); + GPDR |= (BADGE4_GPIO_SDSDA | BADGE4_GPIO_SDSCL); + + /* uart */ + GPCR = (BADGE4_GPIO_UART_HS1 | BADGE4_GPIO_UART_HS2); + GPDR |= (BADGE4_GPIO_UART_HS1 | BADGE4_GPIO_UART_HS2); + + /* CPLD muxsel0 input for mux/adc chip select */ + GPCR = BADGE4_GPIO_MUXSEL0; + GPDR |= BADGE4_GPIO_MUXSEL0; + + /* test points: J5, J6 as inputs, J7 outputs */ + GPDR &= ~(BADGE4_GPIO_TESTPT_J5 | BADGE4_GPIO_TESTPT_J6); + GPCR = BADGE4_GPIO_TESTPT_J7; + GPDR |= BADGE4_GPIO_TESTPT_J7; + + /* 5V supply rail. */ + GPCR = BADGE4_GPIO_PCMEN5V; /* initially off */ + GPDR |= BADGE4_GPIO_PCMEN5V; + + /* CPLD sdram type inputs; set up by blob */ + //GPDR |= (BADGE4_GPIO_SDTYP1 | BADGE4_GPIO_SDTYP0); + printk(KERN_DEBUG __FILE__ ": SDRAM CPLD typ1=%d typ0=%d\n", + !!(GPLR & BADGE4_GPIO_SDTYP1), + !!(GPLR & BADGE4_GPIO_SDTYP0)); + + /* SA1111 reset pin; set up by blob */ + //GPSR = BADGE4_GPIO_SA1111_NRST; + //GPDR |= BADGE4_GPIO_SA1111_NRST; + + + /* power management cruft */ + PGSR = 0; + PWER = 0; + PCFR = 0; + PSDR = 0; + + PWER |= PWER_GPIO26; /* wake up on an edge from TESTPT_J5 */ + PWER |= PWER_RTC; /* wake up if rtc fires */ + + /* drive sa1111_nrst during sleep */ + PGSR |= BADGE4_GPIO_SA1111_NRST; + /* drive CPLD as is during sleep */ + PGSR |= (GPLR & (BADGE4_GPIO_SDTYP0|BADGE4_GPIO_SDTYP1)); + + + /* Now bring up the SA-1111. */ + ret = badge4_sa1111_init(); + if (ret < 0) + printk(KERN_ERR + "%s: SA-1111 initialization failed (%d)\n", + __FUNCTION__, ret); + + + /* maybe turn on 5v0 from the start */ + badge4_set_5V(BADGE4_5V_INITIALLY, five_v_on); + + sa11x0_set_flash_data(&badge4_flash_data, &badge4_flash_resource, 1); + + return 0; +} + +arch_initcall(badge4_init); + + +static unsigned badge4_5V_bitmap = 0; + +void badge4_set_5V(unsigned subsystem, int on) +{ + unsigned long flags; + unsigned old_5V_bitmap; + + local_irq_save(flags); + + old_5V_bitmap = badge4_5V_bitmap; + + if (on) { + badge4_5V_bitmap |= subsystem; + } else { + badge4_5V_bitmap &= ~subsystem; + } + + /* detect on->off and off->on transitions */ + if ((!old_5V_bitmap) && (badge4_5V_bitmap)) { + /* was off, now on */ + printk(KERN_INFO "%s: enabling 5V supply rail\n", __FUNCTION__); + GPSR = BADGE4_GPIO_PCMEN5V; + } else if ((old_5V_bitmap) && (!badge4_5V_bitmap)) { + /* was on, now off */ + printk(KERN_INFO "%s: disabling 5V supply rail\n", __FUNCTION__); + GPCR = BADGE4_GPIO_PCMEN5V; + } + + local_irq_restore(flags); +} +EXPORT_SYMBOL(badge4_set_5V); + + +static struct map_desc badge4_io_desc[] __initdata = { + /* virtual physical length type */ + {0xf1000000, 0x08000000, 0x00100000, MT_DEVICE },/* SRAM bank 1 */ + {0xf2000000, 0x10000000, 0x00100000, MT_DEVICE },/* SRAM bank 2 */ + {0xf4000000, 0x48000000, 0x00100000, MT_DEVICE } /* SA-1111 */ +}; + +static void +badge4_uart_pm(struct uart_port *port, u_int state, u_int oldstate) +{ + if (!state) { + Ser1SDCR0 |= SDCR0_UART; + } +} + +static struct sa1100_port_fns badge4_port_fns __initdata = { + //.get_mctrl = badge4_get_mctrl, + //.set_mctrl = badge4_set_mctrl, + .pm = badge4_uart_pm, +}; + +static void __init badge4_map_io(void) +{ + sa1100_map_io(); + iotable_init(badge4_io_desc, ARRAY_SIZE(badge4_io_desc)); + + sa1100_register_uart_fns(&badge4_port_fns); + sa1100_register_uart(0, 3); + sa1100_register_uart(1, 1); +} + +MACHINE_START(BADGE4, "Hewlett-Packard Laboratories BadgePAD 4") + BOOT_MEM(0xc0000000, 0x80000000, 0xf8000000) + BOOT_PARAMS(0xc0000100) + MAPIO(badge4_map_io) + INITIRQ(sa1100_init_irq) + .timer = &sa1100_timer, +MACHINE_END |