diff options
Diffstat (limited to 'arch/arm/mach-cns3xxx/core.c')
-rw-r--r-- | arch/arm/mach-cns3xxx/core.c | 410 |
1 files changed, 0 insertions, 410 deletions
diff --git a/arch/arm/mach-cns3xxx/core.c b/arch/arm/mach-cns3xxx/core.c deleted file mode 100644 index 3fc4ec830e3a..000000000000 --- a/arch/arm/mach-cns3xxx/core.c +++ /dev/null @@ -1,410 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright 1999 - 2003 ARM Limited - * Copyright 2000 Deep Blue Solutions Ltd - * Copyright 2008 Cavium Networks - */ - -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/clockchips.h> -#include <linux/io.h> -#include <linux/irqchip/arm-gic.h> -#include <linux/of_platform.h> -#include <linux/platform_device.h> -#include <linux/usb/ehci_pdriver.h> -#include <linux/usb/ohci_pdriver.h> -#include <asm/mach/arch.h> -#include <asm/mach/map.h> -#include <asm/mach/time.h> -#include <asm/mach/irq.h> -#include <asm/hardware/cache-l2x0.h> -#include "cns3xxx.h" -#include "core.h" -#include "pm.h" - -static struct map_desc cns3xxx_io_desc[] __initdata = { - { - .virtual = CNS3XXX_TC11MP_SCU_BASE_VIRT, - .pfn = __phys_to_pfn(CNS3XXX_TC11MP_SCU_BASE), - .length = SZ_8K, - .type = MT_DEVICE, - }, { - .virtual = CNS3XXX_TIMER1_2_3_BASE_VIRT, - .pfn = __phys_to_pfn(CNS3XXX_TIMER1_2_3_BASE), - .length = SZ_4K, - .type = MT_DEVICE, - }, { - .virtual = CNS3XXX_MISC_BASE_VIRT, - .pfn = __phys_to_pfn(CNS3XXX_MISC_BASE), - .length = SZ_4K, - .type = MT_DEVICE, - }, { - .virtual = CNS3XXX_PM_BASE_VIRT, - .pfn = __phys_to_pfn(CNS3XXX_PM_BASE), - .length = SZ_4K, - .type = MT_DEVICE, -#ifdef CONFIG_PCI - }, { - .virtual = CNS3XXX_PCIE0_HOST_BASE_VIRT, - .pfn = __phys_to_pfn(CNS3XXX_PCIE0_HOST_BASE), - .length = SZ_4K, - .type = MT_DEVICE, - }, { - .virtual = CNS3XXX_PCIE0_CFG0_BASE_VIRT, - .pfn = __phys_to_pfn(CNS3XXX_PCIE0_CFG0_BASE), - .length = SZ_64K, /* really 4 KiB at offset 32 KiB */ - .type = MT_DEVICE, - }, { - .virtual = CNS3XXX_PCIE0_CFG1_BASE_VIRT, - .pfn = __phys_to_pfn(CNS3XXX_PCIE0_CFG1_BASE), - .length = SZ_16M, - .type = MT_DEVICE, - }, { - .virtual = CNS3XXX_PCIE1_HOST_BASE_VIRT, - .pfn = __phys_to_pfn(CNS3XXX_PCIE1_HOST_BASE), - .length = SZ_4K, - .type = MT_DEVICE, - }, { - .virtual = CNS3XXX_PCIE1_CFG0_BASE_VIRT, - .pfn = __phys_to_pfn(CNS3XXX_PCIE1_CFG0_BASE), - .length = SZ_64K, /* really 4 KiB at offset 32 KiB */ - .type = MT_DEVICE, - }, { - .virtual = CNS3XXX_PCIE1_CFG1_BASE_VIRT, - .pfn = __phys_to_pfn(CNS3XXX_PCIE1_CFG1_BASE), - .length = SZ_16M, - .type = MT_DEVICE, -#endif - }, -}; - -void __init cns3xxx_map_io(void) -{ - iotable_init(cns3xxx_io_desc, ARRAY_SIZE(cns3xxx_io_desc)); -} - -/* used by entry-macro.S */ -void __init cns3xxx_init_irq(void) -{ - gic_init(IOMEM(CNS3XXX_TC11MP_GIC_DIST_BASE_VIRT), - IOMEM(CNS3XXX_TC11MP_GIC_CPU_BASE_VIRT)); -} - -void cns3xxx_power_off(void) -{ - u32 __iomem *pm_base = IOMEM(CNS3XXX_PM_BASE_VIRT); - u32 clkctrl; - - printk(KERN_INFO "powering system down...\n"); - - clkctrl = readl(pm_base + PM_SYS_CLK_CTRL_OFFSET); - clkctrl &= 0xfffff1ff; - clkctrl |= (0x5 << 9); /* Hibernate */ - writel(clkctrl, pm_base + PM_SYS_CLK_CTRL_OFFSET); - -} - -/* - * Timer - */ -static void __iomem *cns3xxx_tmr1; - -static int cns3xxx_shutdown(struct clock_event_device *clk) -{ - writel(0, cns3xxx_tmr1 + TIMER1_2_CONTROL_OFFSET); - return 0; -} - -static int cns3xxx_set_oneshot(struct clock_event_device *clk) -{ - unsigned long ctrl = readl(cns3xxx_tmr1 + TIMER1_2_CONTROL_OFFSET); - - /* period set, and timer enabled in 'next_event' hook */ - ctrl |= (1 << 2) | (1 << 9); - writel(ctrl, cns3xxx_tmr1 + TIMER1_2_CONTROL_OFFSET); - return 0; -} - -static int cns3xxx_set_periodic(struct clock_event_device *clk) -{ - unsigned long ctrl = readl(cns3xxx_tmr1 + TIMER1_2_CONTROL_OFFSET); - int pclk = cns3xxx_cpu_clock() / 8; - int reload; - - reload = pclk * 20 / (3 * HZ) * 0x25000; - writel(reload, cns3xxx_tmr1 + TIMER1_AUTO_RELOAD_OFFSET); - ctrl |= (1 << 0) | (1 << 2) | (1 << 9); - writel(ctrl, cns3xxx_tmr1 + TIMER1_2_CONTROL_OFFSET); - return 0; -} - -static int cns3xxx_timer_set_next_event(unsigned long evt, - struct clock_event_device *unused) -{ - unsigned long ctrl = readl(cns3xxx_tmr1 + TIMER1_2_CONTROL_OFFSET); - - writel(evt, cns3xxx_tmr1 + TIMER1_AUTO_RELOAD_OFFSET); - writel(ctrl | (1 << 0), cns3xxx_tmr1 + TIMER1_2_CONTROL_OFFSET); - - return 0; -} - -static struct clock_event_device cns3xxx_tmr1_clockevent = { - .name = "cns3xxx timer1", - .features = CLOCK_EVT_FEAT_PERIODIC | - CLOCK_EVT_FEAT_ONESHOT, - .set_state_shutdown = cns3xxx_shutdown, - .set_state_periodic = cns3xxx_set_periodic, - .set_state_oneshot = cns3xxx_set_oneshot, - .tick_resume = cns3xxx_shutdown, - .set_next_event = cns3xxx_timer_set_next_event, - .rating = 350, - .cpumask = cpu_all_mask, -}; - -static void __init cns3xxx_clockevents_init(unsigned int timer_irq) -{ - cns3xxx_tmr1_clockevent.irq = timer_irq; - clockevents_config_and_register(&cns3xxx_tmr1_clockevent, - (cns3xxx_cpu_clock() >> 3) * 1000000, - 0xf, 0xffffffff); -} - -/* - * IRQ handler for the timer - */ -static irqreturn_t cns3xxx_timer_interrupt(int irq, void *dev_id) -{ - struct clock_event_device *evt = &cns3xxx_tmr1_clockevent; - u32 __iomem *stat = cns3xxx_tmr1 + TIMER1_2_INTERRUPT_STATUS_OFFSET; - u32 val; - - /* Clear the interrupt */ - val = readl(stat); - writel(val & ~(1 << 2), stat); - - evt->event_handler(evt); - - return IRQ_HANDLED; -} - -/* - * Set up the clock source and clock events devices - */ -static void __init __cns3xxx_timer_init(unsigned int timer_irq) -{ - u32 val; - u32 irq_mask; - - /* - * Initialise to a known state (all timers off) - */ - - /* disable timer1 and timer2 */ - writel(0, cns3xxx_tmr1 + TIMER1_2_CONTROL_OFFSET); - /* stop free running timer3 */ - writel(0, cns3xxx_tmr1 + TIMER_FREERUN_CONTROL_OFFSET); - - /* timer1 */ - writel(0x5C800, cns3xxx_tmr1 + TIMER1_COUNTER_OFFSET); - writel(0x5C800, cns3xxx_tmr1 + TIMER1_AUTO_RELOAD_OFFSET); - - writel(0, cns3xxx_tmr1 + TIMER1_MATCH_V1_OFFSET); - writel(0, cns3xxx_tmr1 + TIMER1_MATCH_V2_OFFSET); - - /* mask irq, non-mask timer1 overflow */ - irq_mask = readl(cns3xxx_tmr1 + TIMER1_2_INTERRUPT_MASK_OFFSET); - irq_mask &= ~(1 << 2); - irq_mask |= 0x03; - writel(irq_mask, cns3xxx_tmr1 + TIMER1_2_INTERRUPT_MASK_OFFSET); - - /* down counter */ - val = readl(cns3xxx_tmr1 + TIMER1_2_CONTROL_OFFSET); - val |= (1 << 9); - writel(val, cns3xxx_tmr1 + TIMER1_2_CONTROL_OFFSET); - - /* timer2 */ - writel(0, cns3xxx_tmr1 + TIMER2_MATCH_V1_OFFSET); - writel(0, cns3xxx_tmr1 + TIMER2_MATCH_V2_OFFSET); - - /* mask irq */ - irq_mask = readl(cns3xxx_tmr1 + TIMER1_2_INTERRUPT_MASK_OFFSET); - irq_mask |= ((1 << 3) | (1 << 4) | (1 << 5)); - writel(irq_mask, cns3xxx_tmr1 + TIMER1_2_INTERRUPT_MASK_OFFSET); - - /* down counter */ - val = readl(cns3xxx_tmr1 + TIMER1_2_CONTROL_OFFSET); - val |= (1 << 10); - writel(val, cns3xxx_tmr1 + TIMER1_2_CONTROL_OFFSET); - - /* Make irqs happen for the system timer */ - if (request_irq(timer_irq, cns3xxx_timer_interrupt, - IRQF_TIMER | IRQF_IRQPOLL, "timer", NULL)) - pr_err("Failed to request irq %d (timer)\n", timer_irq); - - cns3xxx_clockevents_init(timer_irq); -} - -void __init cns3xxx_timer_init(void) -{ - cns3xxx_tmr1 = IOMEM(CNS3XXX_TIMER1_2_3_BASE_VIRT); - - __cns3xxx_timer_init(IRQ_CNS3XXX_TIMER0); -} - -#ifdef CONFIG_CACHE_L2X0 - -void __init cns3xxx_l2x0_init(void) -{ - void __iomem *base = ioremap(CNS3XXX_L2C_BASE, SZ_4K); - u32 val; - - if (WARN_ON(!base)) - return; - - /* - * Tag RAM Control register - * - * bit[10:8] - 1 cycle of write accesses latency - * bit[6:4] - 1 cycle of read accesses latency - * bit[3:0] - 1 cycle of setup latency - * - * 1 cycle of latency for setup, read and write accesses - */ - val = readl(base + L310_TAG_LATENCY_CTRL); - val &= 0xfffff888; - writel(val, base + L310_TAG_LATENCY_CTRL); - - /* - * Data RAM Control register - * - * bit[10:8] - 1 cycles of write accesses latency - * bit[6:4] - 1 cycles of read accesses latency - * bit[3:0] - 1 cycle of setup latency - * - * 1 cycle of latency for setup, read and write accesses - */ - val = readl(base + L310_DATA_LATENCY_CTRL); - val &= 0xfffff888; - writel(val, base + L310_DATA_LATENCY_CTRL); - - /* 32 KiB, 8-way, parity disable */ - l2x0_init(base, 0x00500000, 0xfe0f0fff); -} - -#endif /* CONFIG_CACHE_L2X0 */ - -static int csn3xxx_usb_power_on(struct platform_device *pdev) -{ - /* - * EHCI and OHCI share the same clock and power, - * resetting twice would cause the 1st controller been reset. - * Therefore only do power up at the first up device, and - * power down at the last down device. - * - * Set USB AHB INCR length to 16 - */ - if (atomic_inc_return(&usb_pwr_ref) == 1) { - cns3xxx_pwr_power_up(1 << PM_PLL_HM_PD_CTRL_REG_OFFSET_PLL_USB); - cns3xxx_pwr_clk_en(1 << PM_CLK_GATE_REG_OFFSET_USB_HOST); - cns3xxx_pwr_soft_rst(1 << PM_SOFT_RST_REG_OFFST_USB_HOST); - __raw_writel((__raw_readl(MISC_CHIP_CONFIG_REG) | (0X2 << 24)), - MISC_CHIP_CONFIG_REG); - } - - return 0; -} - -static void csn3xxx_usb_power_off(struct platform_device *pdev) -{ - /* - * EHCI and OHCI share the same clock and power, - * resetting twice would cause the 1st controller been reset. - * Therefore only do power up at the first up device, and - * power down at the last down device. - */ - if (atomic_dec_return(&usb_pwr_ref) == 0) - cns3xxx_pwr_clk_dis(1 << PM_CLK_GATE_REG_OFFSET_USB_HOST); -} - -static struct usb_ehci_pdata cns3xxx_usb_ehci_pdata = { - .power_on = csn3xxx_usb_power_on, - .power_off = csn3xxx_usb_power_off, -}; - -static struct usb_ohci_pdata cns3xxx_usb_ohci_pdata = { - .num_ports = 1, - .power_on = csn3xxx_usb_power_on, - .power_off = csn3xxx_usb_power_off, -}; - -static const struct of_dev_auxdata cns3xxx_auxdata[] __initconst = { - { "intel,usb-ehci", CNS3XXX_USB_BASE, "ehci-platform", &cns3xxx_usb_ehci_pdata }, - { "intel,usb-ohci", CNS3XXX_USB_OHCI_BASE, "ohci-platform", &cns3xxx_usb_ohci_pdata }, - { "cavium,cns3420-ahci", CNS3XXX_SATA2_BASE, "ahci", NULL }, - { "cavium,cns3420-sdhci", CNS3XXX_SDIO_BASE, "ahci", NULL }, - {}, -}; - -static void __init cns3xxx_init(void) -{ - struct device_node *dn; - - cns3xxx_l2x0_init(); - - dn = of_find_compatible_node(NULL, NULL, "cavium,cns3420-ahci"); - if (of_device_is_available(dn)) { - u32 tmp; - - tmp = __raw_readl(MISC_SATA_POWER_MODE); - tmp |= 0x1 << 16; /* Disable SATA PHY 0 from SLUMBER Mode */ - tmp |= 0x1 << 17; /* Disable SATA PHY 1 from SLUMBER Mode */ - __raw_writel(tmp, MISC_SATA_POWER_MODE); - - /* Enable SATA PHY */ - cns3xxx_pwr_power_up(0x1 << PM_PLL_HM_PD_CTRL_REG_OFFSET_SATA_PHY0); - cns3xxx_pwr_power_up(0x1 << PM_PLL_HM_PD_CTRL_REG_OFFSET_SATA_PHY1); - - /* Enable SATA Clock */ - cns3xxx_pwr_clk_en(0x1 << PM_CLK_GATE_REG_OFFSET_SATA); - - /* De-Asscer SATA Reset */ - cns3xxx_pwr_soft_rst(CNS3XXX_PWR_SOFTWARE_RST(SATA)); - } - of_node_put(dn); - - dn = of_find_compatible_node(NULL, NULL, "cavium,cns3420-sdhci"); - if (of_device_is_available(dn)) { - u32 __iomem *gpioa = IOMEM(CNS3XXX_MISC_BASE_VIRT + 0x0014); - u32 gpioa_pins = __raw_readl(gpioa); - - /* MMC/SD pins share with GPIOA */ - gpioa_pins |= 0x1fff0004; - __raw_writel(gpioa_pins, gpioa); - - cns3xxx_pwr_clk_en(CNS3XXX_PWR_CLK_EN(SDIO)); - cns3xxx_pwr_soft_rst(CNS3XXX_PWR_SOFTWARE_RST(SDIO)); - } - of_node_put(dn); - - pm_power_off = cns3xxx_power_off; - - of_platform_default_populate(NULL, cns3xxx_auxdata, NULL); -} - -static const char *const cns3xxx_dt_compat[] __initconst = { - "cavium,cns3410", - "cavium,cns3420", - NULL, -}; - -DT_MACHINE_START(CNS3XXX_DT, "Cavium Networks CNS3xxx") - .dt_compat = cns3xxx_dt_compat, - .map_io = cns3xxx_map_io, - .init_irq = cns3xxx_init_irq, - .init_time = cns3xxx_timer_init, - .init_machine = cns3xxx_init, - .init_late = cns3xxx_pcie_init_late, - .restart = cns3xxx_restart, -MACHINE_END |