diff options
Diffstat (limited to 'arch/arm/mach-integrator/integrator_ap.c')
| -rw-r--r-- | arch/arm/mach-integrator/integrator_ap.c | 202 |
1 files changed, 0 insertions, 202 deletions
diff --git a/arch/arm/mach-integrator/integrator_ap.c b/arch/arm/mach-integrator/integrator_ap.c deleted file mode 100644 index 58b02cbbea72..000000000000 --- a/arch/arm/mach-integrator/integrator_ap.c +++ /dev/null @@ -1,202 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * linux/arch/arm/mach-integrator/integrator_ap.c - * - * Copyright (C) 2000-2003 Deep Blue Solutions Ltd - */ -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/syscore_ops.h> -#include <linux/amba/bus.h> -#include <linux/io.h> -#include <linux/irqchip.h> -#include <linux/of_irq.h> -#include <linux/of_address.h> -#include <linux/of_platform.h> -#include <linux/termios.h> -#include <linux/mfd/syscon.h> -#include <linux/regmap.h> - -#include <asm/mach/arch.h> -#include <asm/mach/map.h> - -#include "hardware.h" -#include "cm.h" -#include "common.h" - -/* Regmap to the AP system controller */ -static struct regmap *ap_syscon_map; - -/* - * All IO addresses are mapped onto VA 0xFFFx.xxxx, where x.xxxx - * is the (PA >> 12). - * - * Setup a VA for the Integrator interrupt controller (for header #0, - * just for now). - */ -#define VA_IC_BASE __io_address(INTEGRATOR_IC_BASE) - -/* - * Logical Physical - * f1400000 14000000 Interrupt controller - * f1600000 16000000 UART 0 - */ - -static struct map_desc ap_io_desc[] __initdata __maybe_unused = { - { - .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 - } -}; - -static void __init ap_map_io(void) -{ - iotable_init(ap_io_desc, ARRAY_SIZE(ap_io_desc)); -} - -#ifdef CONFIG_PM -static unsigned long ic_irq_enable; - -static int irq_suspend(void) -{ - ic_irq_enable = readl(VA_IC_BASE + IRQ_ENABLE); - return 0; -} - -static void irq_resume(void) -{ - /* disable all irq sources */ - cm_clear_irqs(); - writel(-1, VA_IC_BASE + IRQ_ENABLE_CLEAR); - writel(-1, VA_IC_BASE + FIQ_ENABLE_CLEAR); - - writel(ic_irq_enable, VA_IC_BASE + IRQ_ENABLE_SET); -} -#else -#define irq_suspend NULL -#define irq_resume NULL -#endif - -static struct syscore_ops irq_syscore_ops = { - .suspend = irq_suspend, - .resume = irq_resume, -}; - -static int __init irq_syscore_init(void) -{ - register_syscore_ops(&irq_syscore_ops); - - return 0; -} - -device_initcall(irq_syscore_init); - -/* - * For the PL010 found in the Integrator/AP some of the UART control is - * implemented in the system controller and accessed using a callback - * from the driver. - */ -static void integrator_uart_set_mctrl(struct amba_device *dev, - void __iomem *base, unsigned int mctrl) -{ - unsigned int ctrls = 0, ctrlc = 0, rts_mask, dtr_mask; - u32 phybase = dev->res.start; - int ret; - - if (phybase == INTEGRATOR_UART0_BASE) { - /* UART0 */ - rts_mask = 1 << 4; - dtr_mask = 1 << 5; - } else { - /* UART1 */ - rts_mask = 1 << 6; - dtr_mask = 1 << 7; - } - - if (mctrl & TIOCM_RTS) - ctrlc |= rts_mask; - else - ctrls |= rts_mask; - - if (mctrl & TIOCM_DTR) - ctrlc |= dtr_mask; - else - ctrls |= dtr_mask; - - ret = regmap_write(ap_syscon_map, - INTEGRATOR_SC_CTRLS_OFFSET, - ctrls); - if (ret) - pr_err("MODEM: unable to write PL010 UART CTRLS\n"); - - ret = regmap_write(ap_syscon_map, - INTEGRATOR_SC_CTRLC_OFFSET, - ctrlc); - if (ret) - pr_err("MODEM: unable to write PL010 UART CRTLC\n"); -} - -struct amba_pl010_data ap_uart_data = { - .set_mctrl = integrator_uart_set_mctrl, -}; - -void __init ap_init_early(void) -{ -} - -static void __init ap_init_irq_of(void) -{ - cm_init(); - irqchip_init(); -} - -/* For the Device Tree, add in the UART callbacks as AUXDATA */ -static struct of_dev_auxdata ap_auxdata_lookup[] __initdata = { - OF_DEV_AUXDATA("arm,primecell", INTEGRATOR_UART0_BASE, - "uart0", &ap_uart_data), - OF_DEV_AUXDATA("arm,primecell", INTEGRATOR_UART1_BASE, - "uart1", &ap_uart_data), - { /* sentinel */ }, -}; - -static const struct of_device_id ap_syscon_match[] = { - { .compatible = "arm,integrator-ap-syscon"}, - { }, -}; - -static void __init ap_init_of(void) -{ - struct device_node *syscon; - - of_platform_default_populate(NULL, ap_auxdata_lookup, NULL); - - syscon = of_find_matching_node(NULL, ap_syscon_match); - if (!syscon) - return; - ap_syscon_map = syscon_node_to_regmap(syscon); - if (IS_ERR(ap_syscon_map)) { - pr_crit("could not find Integrator/AP system controller\n"); - return; - } -} - -static const char * ap_dt_board_compat[] = { - "arm,integrator-ap", - NULL, -}; - -DT_MACHINE_START(INTEGRATOR_AP_DT, "ARM Integrator/AP (Device Tree)") - .reserve = integrator_reserve, - .map_io = ap_map_io, - .init_early = ap_init_early, - .init_irq = ap_init_irq_of, - .init_machine = ap_init_of, - .dt_compat = ap_dt_board_compat, -MACHINE_END |