mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-20 02:34:23 +08:00
91011a7605
The flash on the Integrator was already defined by the device tree, but VPP control and flash protection was in the boardfiles. Simply add the compatible string "arm,versatile-flash" and the special add-on code for flash programming voltage and protection kicks in in the MTD layer. Remove the board file code and augment the device tree in one go for seamless transition. Cc: Grant Likely <grant.likely@linaro.org> Cc: Rob Herring <robh@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
251 lines
6.3 KiB
C
251 lines
6.3 KiB
C
/*
|
|
* linux/arch/arm/mach-integrator/integrator_cp.c
|
|
*
|
|
* Copyright (C) 2003 Deep Blue Solutions Ltd
|
|
*
|
|
* 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.
|
|
*/
|
|
#include <linux/types.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/list.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/dma-mapping.h>
|
|
#include <linux/string.h>
|
|
#include <linux/device.h>
|
|
#include <linux/amba/bus.h>
|
|
#include <linux/amba/kmi.h>
|
|
#include <linux/amba/clcd.h>
|
|
#include <linux/platform_data/video-clcd-versatile.h>
|
|
#include <linux/amba/mmci.h>
|
|
#include <linux/io.h>
|
|
#include <linux/irqchip.h>
|
|
#include <linux/gfp.h>
|
|
#include <linux/of_irq.h>
|
|
#include <linux/of_address.h>
|
|
#include <linux/of_platform.h>
|
|
#include <linux/sched_clock.h>
|
|
|
|
#include <asm/setup.h>
|
|
#include <asm/mach-types.h>
|
|
#include <asm/mach/arch.h>
|
|
#include <asm/mach/irq.h>
|
|
#include <asm/mach/map.h>
|
|
#include <asm/mach/time.h>
|
|
|
|
#include "hardware.h"
|
|
#include "cm.h"
|
|
#include "common.h"
|
|
|
|
/* Base address to the CP controller */
|
|
static void __iomem *intcp_con_base;
|
|
|
|
#define INTCP_PA_CLCD_BASE 0xc0000000
|
|
|
|
/*
|
|
* Logical Physical
|
|
* f1000000 10000000 Core module registers
|
|
* f1300000 13000000 Counter/Timer
|
|
* f1400000 14000000 Interrupt controller
|
|
* f1600000 16000000 UART 0
|
|
* f1700000 17000000 UART 1
|
|
* f1a00000 1a000000 Debug LEDs
|
|
* fc900000 c9000000 GPIO
|
|
* fca00000 ca000000 SIC
|
|
*/
|
|
|
|
static struct map_desc intcp_io_desc[] __initdata __maybe_unused = {
|
|
{
|
|
.virtual = IO_ADDRESS(INTEGRATOR_HDR_BASE),
|
|
.pfn = __phys_to_pfn(INTEGRATOR_HDR_BASE),
|
|
.length = SZ_4K,
|
|
.type = MT_DEVICE
|
|
}, {
|
|
.virtual = IO_ADDRESS(INTEGRATOR_CT_BASE),
|
|
.pfn = __phys_to_pfn(INTEGRATOR_CT_BASE),
|
|
.length = SZ_4K,
|
|
.type = MT_DEVICE
|
|
}, {
|
|
.virtual = IO_ADDRESS(INTEGRATOR_IC_BASE),
|
|
.pfn = __phys_to_pfn(INTEGRATOR_IC_BASE),
|
|
.length = SZ_4K,
|
|
.type = MT_DEVICE
|
|
}, {
|
|
.virtual = IO_ADDRESS(INTEGRATOR_UART0_BASE),
|
|
.pfn = __phys_to_pfn(INTEGRATOR_UART0_BASE),
|
|
.length = SZ_4K,
|
|
.type = MT_DEVICE
|
|
}, {
|
|
.virtual = IO_ADDRESS(INTEGRATOR_DBG_BASE),
|
|
.pfn = __phys_to_pfn(INTEGRATOR_DBG_BASE),
|
|
.length = SZ_4K,
|
|
.type = MT_DEVICE
|
|
}, {
|
|
.virtual = IO_ADDRESS(INTEGRATOR_CP_GPIO_BASE),
|
|
.pfn = __phys_to_pfn(INTEGRATOR_CP_GPIO_BASE),
|
|
.length = SZ_4K,
|
|
.type = MT_DEVICE
|
|
}, {
|
|
.virtual = IO_ADDRESS(INTEGRATOR_CP_SIC_BASE),
|
|
.pfn = __phys_to_pfn(INTEGRATOR_CP_SIC_BASE),
|
|
.length = SZ_4K,
|
|
.type = MT_DEVICE
|
|
}
|
|
};
|
|
|
|
static void __init intcp_map_io(void)
|
|
{
|
|
iotable_init(intcp_io_desc, ARRAY_SIZE(intcp_io_desc));
|
|
}
|
|
|
|
/*
|
|
* It seems that the card insertion interrupt remains active after
|
|
* we've acknowledged it. We therefore ignore the interrupt, and
|
|
* rely on reading it from the SIC. This also means that we must
|
|
* clear the latched interrupt.
|
|
*/
|
|
static unsigned int mmc_status(struct device *dev)
|
|
{
|
|
unsigned int status = readl(__io_address(0xca000000 + 4));
|
|
writel(8, intcp_con_base + 8);
|
|
|
|
return status & 8;
|
|
}
|
|
|
|
static struct mmci_platform_data mmc_data = {
|
|
.ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
|
|
.status = mmc_status,
|
|
.gpio_wp = -1,
|
|
.gpio_cd = -1,
|
|
};
|
|
|
|
/*
|
|
* CLCD support
|
|
*/
|
|
/*
|
|
* Ensure VGA is selected.
|
|
*/
|
|
static void cp_clcd_enable(struct clcd_fb *fb)
|
|
{
|
|
struct fb_var_screeninfo *var = &fb->fb.var;
|
|
u32 val = CM_CTRL_STATIC1 | CM_CTRL_STATIC2
|
|
| CM_CTRL_LCDEN0 | CM_CTRL_LCDEN1;
|
|
|
|
if (var->bits_per_pixel <= 8 ||
|
|
(var->bits_per_pixel == 16 && var->green.length == 5))
|
|
/* Pseudocolor, RGB555, BGR555 */
|
|
val |= CM_CTRL_LCDMUXSEL_VGA555_TFT555;
|
|
else if (fb->fb.var.bits_per_pixel <= 16)
|
|
/* truecolor RGB565 */
|
|
val |= CM_CTRL_LCDMUXSEL_VGA565_TFT555;
|
|
else
|
|
val = 0; /* no idea for this, don't trust the docs */
|
|
|
|
cm_control(CM_CTRL_LCDMUXSEL_MASK|
|
|
CM_CTRL_LCDEN0|
|
|
CM_CTRL_LCDEN1|
|
|
CM_CTRL_STATIC1|
|
|
CM_CTRL_STATIC2|
|
|
CM_CTRL_STATIC|
|
|
CM_CTRL_n24BITEN, val);
|
|
}
|
|
|
|
static int cp_clcd_setup(struct clcd_fb *fb)
|
|
{
|
|
fb->panel = versatile_clcd_get_panel("VGA");
|
|
if (!fb->panel)
|
|
return -EINVAL;
|
|
|
|
return versatile_clcd_setup_dma(fb, SZ_1M);
|
|
}
|
|
|
|
static struct clcd_board clcd_data = {
|
|
.name = "Integrator/CP",
|
|
.caps = CLCD_CAP_5551 | CLCD_CAP_RGB565 | CLCD_CAP_888,
|
|
.check = clcdfb_check,
|
|
.decode = clcdfb_decode,
|
|
.enable = cp_clcd_enable,
|
|
.setup = cp_clcd_setup,
|
|
.mmap = versatile_clcd_mmap_dma,
|
|
.remove = versatile_clcd_remove_dma,
|
|
};
|
|
|
|
#define REFCOUNTER (__io_address(INTEGRATOR_HDR_BASE) + 0x28)
|
|
|
|
static u64 notrace intcp_read_sched_clock(void)
|
|
{
|
|
return readl(REFCOUNTER);
|
|
}
|
|
|
|
static void __init intcp_init_early(void)
|
|
{
|
|
sched_clock_register(intcp_read_sched_clock, 32, 24000000);
|
|
}
|
|
|
|
static void __init intcp_init_irq_of(void)
|
|
{
|
|
cm_init();
|
|
irqchip_init();
|
|
}
|
|
|
|
/*
|
|
* For the Device Tree, add in the UART, MMC and CLCD specifics as AUXDATA
|
|
* and enforce the bus names since these are used for clock lookups.
|
|
*/
|
|
static struct of_dev_auxdata intcp_auxdata_lookup[] __initdata = {
|
|
OF_DEV_AUXDATA("arm,primecell", INTEGRATOR_RTC_BASE,
|
|
"rtc", NULL),
|
|
OF_DEV_AUXDATA("arm,primecell", INTEGRATOR_UART0_BASE,
|
|
"uart0", NULL),
|
|
OF_DEV_AUXDATA("arm,primecell", INTEGRATOR_UART1_BASE,
|
|
"uart1", NULL),
|
|
OF_DEV_AUXDATA("arm,primecell", KMI0_BASE,
|
|
"kmi0", NULL),
|
|
OF_DEV_AUXDATA("arm,primecell", KMI1_BASE,
|
|
"kmi1", NULL),
|
|
OF_DEV_AUXDATA("arm,primecell", INTEGRATOR_CP_MMC_BASE,
|
|
"mmci", &mmc_data),
|
|
OF_DEV_AUXDATA("arm,primecell", INTEGRATOR_CP_AACI_BASE,
|
|
"aaci", &mmc_data),
|
|
OF_DEV_AUXDATA("arm,primecell", INTCP_PA_CLCD_BASE,
|
|
"clcd", &clcd_data),
|
|
{ /* sentinel */ },
|
|
};
|
|
|
|
static const struct of_device_id intcp_syscon_match[] = {
|
|
{ .compatible = "arm,integrator-cp-syscon"},
|
|
{ },
|
|
};
|
|
|
|
static void __init intcp_init_of(void)
|
|
{
|
|
struct device_node *cpcon;
|
|
|
|
cpcon = of_find_matching_node(NULL, intcp_syscon_match);
|
|
if (!cpcon)
|
|
return;
|
|
|
|
intcp_con_base = of_iomap(cpcon, 0);
|
|
if (!intcp_con_base)
|
|
return;
|
|
|
|
of_platform_populate(NULL, of_default_bus_match_table,
|
|
intcp_auxdata_lookup, NULL);
|
|
}
|
|
|
|
static const char * intcp_dt_board_compat[] = {
|
|
"arm,integrator-cp",
|
|
NULL,
|
|
};
|
|
|
|
DT_MACHINE_START(INTEGRATOR_CP_DT, "ARM Integrator/CP (Device Tree)")
|
|
.reserve = integrator_reserve,
|
|
.map_io = intcp_map_io,
|
|
.init_early = intcp_init_early,
|
|
.init_irq = intcp_init_irq_of,
|
|
.init_machine = intcp_init_of,
|
|
.dt_compat = intcp_dt_board_compat,
|
|
MACHINE_END
|