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author | Alexey Charkov <alchark@gmail.com> | 2010-12-23 13:11:21 +0100 |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-01-25 16:07:01 +0100 |
commit | 21f47fbc5b18da4a3db680959aee887612ec9a72 (patch) | |
tree | 46dd2d4010c5c258f30e2dfeb1ea6d9d2404a845 /arch/arm/mach-vt8500/wm8505_7in.c | |
parent | Linux 2.6.38-rc2 (diff) | |
download | linux-21f47fbc5b18da4a3db680959aee887612ec9a72.tar.xz linux-21f47fbc5b18da4a3db680959aee887612ec9a72.zip |
ARM: 6597/1: Add basic architecture support for VIA/WonderMedia 85xx SoC's
This adds support for the family of Systems-on-Chip produced initially
by VIA and now its subsidiary WonderMedia that have recently become
widespread in lower-end Chinese ARM-based tablets and netbooks.
Support is included for both VT8500 and WM8505, selectable by a
configuration switch at kernel build time.
Included are basic machine initialization files, register and
interrupt definitions, support for the on-chip interrupt controller,
high-precision OS timer, GPIO lines, necessary macros for early debug,
pulse-width-modulated outputs control, as well as platform device
configurations for the specific drivers implemented elsewhere.
Signed-off-by: Alexey Charkov <alchark@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-vt8500/wm8505_7in.c')
-rw-r--r-- | arch/arm/mach-vt8500/wm8505_7in.c | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/arch/arm/mach-vt8500/wm8505_7in.c b/arch/arm/mach-vt8500/wm8505_7in.c new file mode 100644 index 000000000000..e73aadbcafd6 --- /dev/null +++ b/arch/arm/mach-vt8500/wm8505_7in.c @@ -0,0 +1,77 @@ +/* + * arch/arm/mach-vt8500/wm8505_7in.c + * + * Copyright (C) 2010 Alexey Charkov <alchark@gmail.com> + * + * 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/io.h> +#include <linux/pm.h> + +#include <asm/mach-types.h> +#include <asm/mach/arch.h> + +#include "devices.h" + +static void __iomem *pmc_hiber; + +static struct platform_device *devices[] __initdata = { + &vt8500_device_uart0, + &vt8500_device_ehci, + &vt8500_device_wm8505_fb, + &vt8500_device_ge_rops, + &vt8500_device_pwm, + &vt8500_device_pwmbl, + &vt8500_device_rtc, +}; + +static void vt8500_power_off(void) +{ + local_irq_disable(); + writew(5, pmc_hiber); + asm("mcr%? p15, 0, %0, c7, c0, 4" : : "r" (0)); +} + +void __init wm8505_7in_init(void) +{ +#ifdef CONFIG_FB_WM8505 + void __iomem *gpio_mux_reg = ioremap(wmt_gpio_base + 0x200, 4); + if (gpio_mux_reg) { + writel(readl(gpio_mux_reg) | 0x80000000, gpio_mux_reg); + iounmap(gpio_mux_reg); + } else { + printk(KERN_ERR "Could not remap the GPIO mux register, display may not work properly!\n"); + } +#endif + pmc_hiber = ioremap(wmt_pmc_base + 0x12, 2); + if (pmc_hiber) + pm_power_off = &vt8500_power_off; + else + printk(KERN_ERR "PMC Hibernation register could not be remapped, not enabling power off!\n"); + + wm8505_set_resources(); + platform_add_devices(devices, ARRAY_SIZE(devices)); + vt8500_gpio_init(); +} + +MACHINE_START(WM8505_7IN_NETBOOK, "WM8505 7-inch generic netbook") + .boot_params = 0x00000100, + .reserve = wm8505_reserve_mem, + .map_io = wm8505_map_io, + .init_irq = wm8505_init_irq, + .timer = &vt8500_timer, + .init_machine = wm8505_7in_init, +MACHINE_END |