diff options
Diffstat (limited to 'arch/powerpc/sysdev')
| -rw-r--r-- | arch/powerpc/sysdev/Makefile | 1 | ||||
| -rw-r--r-- | arch/powerpc/sysdev/dart_iommu.c | 9 | ||||
| -rw-r--r-- | arch/powerpc/sysdev/fsl_pmc.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/sysdev/fsl_rio.c | 3 | ||||
| -rw-r--r-- | arch/powerpc/sysdev/mpc8xxx_gpio.c | 75 | ||||
| -rw-r--r-- | arch/powerpc/sysdev/mpic.c | 6 | ||||
| -rw-r--r-- | arch/powerpc/sysdev/mv64x60_dev.c | 1 | ||||
| -rw-r--r-- | arch/powerpc/sysdev/ppc4xx_cpm.c | 346 | ||||
| -rw-r--r-- | arch/powerpc/sysdev/tsi108_dev.c | 9 |
9 files changed, 426 insertions, 26 deletions
diff --git a/arch/powerpc/sysdev/Makefile b/arch/powerpc/sysdev/Makefile index 0bef9dacb64e..9c2973479142 100644 --- a/arch/powerpc/sysdev/Makefile +++ b/arch/powerpc/sysdev/Makefile @@ -41,6 +41,7 @@ obj-$(CONFIG_OF_RTC) += of_rtc.o ifeq ($(CONFIG_PCI),y) obj-$(CONFIG_4xx) += ppc4xx_pci.o endif +obj-$(CONFIG_PPC4xx_CPM) += ppc4xx_cpm.o obj-$(CONFIG_PPC4xx_GPIO) += ppc4xx_gpio.o obj-$(CONFIG_CPM) += cpm_common.o diff --git a/arch/powerpc/sysdev/dart_iommu.c b/arch/powerpc/sysdev/dart_iommu.c index 17cf15ec38be..8e9e06a7ca59 100644 --- a/arch/powerpc/sysdev/dart_iommu.c +++ b/arch/powerpc/sysdev/dart_iommu.c @@ -312,17 +312,10 @@ static void pci_dma_dev_setup_dart(struct pci_dev *dev) static void pci_dma_bus_setup_dart(struct pci_bus *bus) { - struct device_node *dn; - if (!iommu_table_dart_inited) { iommu_table_dart_inited = 1; iommu_table_dart_setup(); } - - dn = pci_bus_to_OF_node(bus); - - if (dn) - PCI_DN(dn)->iommu_table = &iommu_table_dart; } static bool dart_device_on_pcie(struct device *dev) @@ -373,7 +366,7 @@ void __init iommu_init_early_dart(void) if (dn == NULL) { dn = of_find_compatible_node(NULL, "dart", "u4-dart"); if (dn == NULL) - goto bail; + return; /* use default direct_dma_ops */ dart_is_u4 = 1; } diff --git a/arch/powerpc/sysdev/fsl_pmc.c b/arch/powerpc/sysdev/fsl_pmc.c index 44de8559c975..e9381bfefb21 100644 --- a/arch/powerpc/sysdev/fsl_pmc.c +++ b/arch/powerpc/sysdev/fsl_pmc.c @@ -53,7 +53,7 @@ static int pmc_suspend_valid(suspend_state_t state) return 1; } -static struct platform_suspend_ops pmc_suspend_ops = { +static const struct platform_suspend_ops pmc_suspend_ops = { .valid = pmc_suspend_valid, .enter = pmc_suspend_enter, }; diff --git a/arch/powerpc/sysdev/fsl_rio.c b/arch/powerpc/sysdev/fsl_rio.c index 9725369d432a..8c6cab013278 100644 --- a/arch/powerpc/sysdev/fsl_rio.c +++ b/arch/powerpc/sysdev/fsl_rio.c @@ -973,7 +973,6 @@ fsl_rio_dbell_handler(int irq, void *dev_instance) if (dsr & DOORBELL_DSR_QFI) { pr_info("RIO: doorbell queue full\n"); out_be32(&priv->msg_regs->dsr, DOORBELL_DSR_QFI); - goto out; } /* XXX Need to check/dispatch until queue empty */ @@ -1556,8 +1555,6 @@ int fsl_rio_setup(struct platform_device *dev) saved_mcheck_exception = ppc_md.machine_check_exception; ppc_md.machine_check_exception = fsl_rio_mcheck_exception; #endif - /* Ensure that RFXE is set */ - mtspr(SPRN_HID1, (mfspr(SPRN_HID1) | 0x20000)); return 0; err: diff --git a/arch/powerpc/sysdev/mpc8xxx_gpio.c b/arch/powerpc/sysdev/mpc8xxx_gpio.c index c0ea05e87f1d..c48cd8178079 100644 --- a/arch/powerpc/sysdev/mpc8xxx_gpio.c +++ b/arch/powerpc/sysdev/mpc8xxx_gpio.c @@ -1,5 +1,5 @@ /* - * GPIOs on MPC8349/8572/8610 and compatible + * GPIOs on MPC512x/8349/8572/8610 and compatible * * Copyright (C) 2008 Peter Korsgaard <jacmet@sunsite.dk> * @@ -26,6 +26,7 @@ #define GPIO_IER 0x0c #define GPIO_IMR 0x10 #define GPIO_ICR 0x14 +#define GPIO_ICR2 0x18 struct mpc8xxx_gpio_chip { struct of_mm_gpio_chip mm_gc; @@ -37,6 +38,7 @@ struct mpc8xxx_gpio_chip { */ u32 data; struct irq_host *irq; + void *of_dev_id_data; }; static inline u32 mpc8xxx_gpio2mask(unsigned int gpio) @@ -215,6 +217,51 @@ static int mpc8xxx_irq_set_type(unsigned int virq, unsigned int flow_type) return 0; } +static int mpc512x_irq_set_type(unsigned int virq, unsigned int flow_type) +{ + struct mpc8xxx_gpio_chip *mpc8xxx_gc = get_irq_chip_data(virq); + struct of_mm_gpio_chip *mm = &mpc8xxx_gc->mm_gc; + unsigned long gpio = virq_to_hw(virq); + void __iomem *reg; + unsigned int shift; + unsigned long flags; + + if (gpio < 16) { + reg = mm->regs + GPIO_ICR; + shift = (15 - gpio) * 2; + } else { + reg = mm->regs + GPIO_ICR2; + shift = (15 - (gpio % 16)) * 2; + } + + switch (flow_type) { + case IRQ_TYPE_EDGE_FALLING: + case IRQ_TYPE_LEVEL_LOW: + spin_lock_irqsave(&mpc8xxx_gc->lock, flags); + clrsetbits_be32(reg, 3 << shift, 2 << shift); + spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags); + break; + + case IRQ_TYPE_EDGE_RISING: + case IRQ_TYPE_LEVEL_HIGH: + spin_lock_irqsave(&mpc8xxx_gc->lock, flags); + clrsetbits_be32(reg, 3 << shift, 1 << shift); + spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags); + break; + + case IRQ_TYPE_EDGE_BOTH: + spin_lock_irqsave(&mpc8xxx_gc->lock, flags); + clrbits32(reg, 3 << shift); + spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags); + break; + + default: + return -EINVAL; + } + + return 0; +} + static struct irq_chip mpc8xxx_irq_chip = { .name = "mpc8xxx-gpio", .unmask = mpc8xxx_irq_unmask, @@ -226,6 +273,11 @@ static struct irq_chip mpc8xxx_irq_chip = { static int mpc8xxx_gpio_irq_map(struct irq_host *h, unsigned int virq, irq_hw_number_t hw) { + struct mpc8xxx_gpio_chip *mpc8xxx_gc = h->host_data; + + if (mpc8xxx_gc->of_dev_id_data) + mpc8xxx_irq_chip.set_type = mpc8xxx_gc->of_dev_id_data; + set_irq_chip_data(virq, h->host_data); set_irq_chip_and_handler(virq, &mpc8xxx_irq_chip, handle_level_irq); set_irq_type(virq, IRQ_TYPE_NONE); @@ -253,11 +305,20 @@ static struct irq_host_ops mpc8xxx_gpio_irq_ops = { .xlate = mpc8xxx_gpio_irq_xlate, }; +static struct of_device_id mpc8xxx_gpio_ids[] __initdata = { + { .compatible = "fsl,mpc8349-gpio", }, + { .compatible = "fsl,mpc8572-gpio", }, + { .compatible = "fsl,mpc8610-gpio", }, + { .compatible = "fsl,mpc5121-gpio", .data = mpc512x_irq_set_type, }, + {} +}; + static void __init mpc8xxx_add_controller(struct device_node *np) { struct mpc8xxx_gpio_chip *mpc8xxx_gc; struct of_mm_gpio_chip *mm_gc; struct gpio_chip *gc; + const struct of_device_id *id; unsigned hwirq; int ret; @@ -297,6 +358,10 @@ static void __init mpc8xxx_add_controller(struct device_node *np) if (!mpc8xxx_gc->irq) goto skip_irq; + id = of_match_node(mpc8xxx_gpio_ids, np); + if (id) + mpc8xxx_gc->of_dev_id_data = id->data; + mpc8xxx_gc->irq->host_data = mpc8xxx_gc; /* ack and mask all irqs */ @@ -321,13 +386,7 @@ static int __init mpc8xxx_add_gpiochips(void) { struct device_node *np; - for_each_compatible_node(np, NULL, "fsl,mpc8349-gpio") - mpc8xxx_add_controller(np); - - for_each_compatible_node(np, NULL, "fsl,mpc8572-gpio") - mpc8xxx_add_controller(np); - - for_each_compatible_node(np, NULL, "fsl,mpc8610-gpio") + for_each_matching_node(np, mpc8xxx_gpio_ids) mpc8xxx_add_controller(np); for_each_compatible_node(np, NULL, "fsl,qoriq-gpio") diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c index 7c1342618a30..b0c8469e5ddd 100644 --- a/arch/powerpc/sysdev/mpic.c +++ b/arch/powerpc/sysdev/mpic.c @@ -674,7 +674,8 @@ void mpic_unmask_irq(unsigned int irq) /* make sure mask gets to controller before we return to user */ do { if (!loops--) { - printk(KERN_ERR "mpic_enable_irq timeout\n"); + printk(KERN_ERR "%s: timeout on hwirq %u\n", + __func__, src); break; } } while(mpic_irq_read(src, MPIC_INFO(IRQ_VECTOR_PRI)) & MPIC_VECPRI_MASK); @@ -695,7 +696,8 @@ void mpic_mask_irq(unsigned int irq) /* make sure mask gets to controller before we return to user */ do { if (!loops--) { - printk(KERN_ERR "mpic_enable_irq timeout\n"); + printk(KERN_ERR "%s: timeout on hwirq %u\n", + __func__, src); break; } } while(!(mpic_irq_read(src, MPIC_INFO(IRQ_VECTOR_PRI)) & MPIC_VECPRI_MASK)); diff --git a/arch/powerpc/sysdev/mv64x60_dev.c b/arch/powerpc/sysdev/mv64x60_dev.c index 1398bc454999..feaee402e2d6 100644 --- a/arch/powerpc/sysdev/mv64x60_dev.c +++ b/arch/powerpc/sysdev/mv64x60_dev.c @@ -16,6 +16,7 @@ #include <linux/mv643xx.h> #include <linux/platform_device.h> #include <linux/of_platform.h> +#include <linux/of_net.h> #include <linux/dma-mapping.h> #include <asm/prom.h> diff --git a/arch/powerpc/sysdev/ppc4xx_cpm.c b/arch/powerpc/sysdev/ppc4xx_cpm.c new file mode 100644 index 000000000000..73b86cc5ea74 --- /dev/null +++ b/arch/powerpc/sysdev/ppc4xx_cpm.c @@ -0,0 +1,346 @@ +/* + * PowerPC 4xx Clock and Power Management + * + * Copyright (C) 2010, Applied Micro Circuits Corporation + * Victor Gallardo (vgallardo@apm.com) + * + * Based on arch/powerpc/platforms/44x/idle.c: + * Jerone Young <jyoung5@us.ibm.com> + * Copyright 2008 IBM Corp. + * + * Based on arch/powerpc/sysdev/fsl_pmc.c: + * Anton Vorontsov <avorontsov@ru.mvista.com> + * Copyright 2009 MontaVista Software, Inc. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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/kernel.h> +#include <linux/of_platform.h> +#include <linux/sysfs.h> +#include <linux/cpu.h> +#include <linux/suspend.h> +#include <asm/dcr.h> +#include <asm/dcr-native.h> +#include <asm/machdep.h> + +#define CPM_ER 0 +#define CPM_FR 1 +#define CPM_SR 2 + +#define CPM_IDLE_WAIT 0 +#define CPM_IDLE_DOZE 1 + +struct cpm { + dcr_host_t dcr_host; + unsigned int dcr_offset[3]; + unsigned int powersave_off; + unsigned int unused; + unsigned int idle_doze; + unsigned int standby; + unsigned int suspend; +}; + +static struct cpm cpm; + +struct cpm_idle_mode { + unsigned int enabled; + const char *name; +}; + +static struct cpm_idle_mode idle_mode[] = { + [CPM_IDLE_WAIT] = { 1, "wait" }, /* default */ + [CPM_IDLE_DOZE] = { 0, "doze" }, +}; + +static unsigned int cpm_set(unsigned int cpm_reg, unsigned int mask) +{ + unsigned int value; + + /* CPM controller supports 3 different types of sleep interface + * known as class 1, 2 and 3. For class 1 units, they are + * unconditionally put to sleep when the corresponding CPM bit is + * set. For class 2 and 3 units this is not case; if they can be + * put to to sleep, they will. Here we do not verify, we just + * set them and expect them to eventually go off when they can. + */ + value = dcr_read(cpm.dcr_host, cpm.dcr_offset[cpm_reg]); + dcr_write(cpm.dcr_host, cpm.dcr_offset[cpm_reg], value | mask); + + /* return old state, to restore later if needed */ + return value; +} + +static void cpm_idle_wait(void) +{ + unsigned long msr_save; + + /* save off initial state */ + msr_save = mfmsr(); + /* sync required when CPM0_ER[CPU] is set */ + mb(); + /* set wait state MSR */ + mtmsr(msr_save|MSR_WE|MSR_EE|MSR_CE|MSR_DE); + isync(); + /* return to initial state */ + mtmsr(msr_save); + isync(); +} + +static void cpm_idle_sleep(unsigned int mask) +{ + unsigned int er_save; + + /* update CPM_ER state */ + er_save = cpm_set(CPM_ER, mask); + + /* go to wait state so that CPM0_ER[CPU] can take effect */ + cpm_idle_wait(); + + /* restore CPM_ER state */ + dcr_write(cpm.dcr_host, cpm.dcr_offset[CPM_ER], er_save); +} + +static void cpm_idle_doze(void) +{ + cpm_idle_sleep(cpm.idle_doze); +} + +static void cpm_idle_config(int mode) +{ + int i; + + if (idle_mode[mode].enabled) + return; + + for (i = 0; i < ARRAY_SIZE(idle_mode); i++) + idle_mode[i].enabled = 0; + + idle_mode[mode].enabled = 1; +} + +static ssize_t cpm_idle_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + char *s = buf; + int i; + + for (i = 0; i < ARRAY_SIZE(idle_mode); i++) { + if (idle_mode[i].enabled) + s += sprintf(s, "[%s] ", idle_mode[i].name); + else + s += sprintf(s, "%s ", idle_mode[i].name); + } + + *(s-1) = '\n'; /* convert the last space to a newline */ + + return s - buf; +} + +static ssize_t cpm_idle_store(struct kobject *kobj, + struct kobj_attribute *attr, + const char *buf, size_t n) +{ + int i; + char *p; + int len; + + p = memchr(buf, '\n', n); + len = p ? p - buf : n; + + for (i = 0; i < ARRAY_SIZE(idle_mode); i++) { + if (strncmp(buf, idle_mode[i].name, len) == 0) { + cpm_idle_config(i); + return n; + } + } + + return -EINVAL; +} + +static struct kobj_attribute cpm_idle_attr = + __ATTR(idle, 0644, cpm_idle_show, cpm_idle_store); + +static void cpm_idle_config_sysfs(void) +{ + struct sys_device *sys_dev; + unsigned long ret; + + sys_dev = get_cpu_sysdev(0); + + ret = sysfs_create_file(&sys_dev->kobj, + &cpm_idle_attr.attr); + if (ret) + printk(KERN_WARNING + "cpm: failed to create idle sysfs entry\n"); +} + +static void cpm_idle(void) +{ + if (idle_mode[CPM_IDLE_DOZE].enabled) + cpm_idle_doze(); + else + cpm_idle_wait(); +} + +static int cpm_suspend_valid(suspend_state_t state) +{ + switch (state) { + case PM_SUSPEND_STANDBY: + return !!cpm.standby; + case PM_SUSPEND_MEM: + return !!cpm.suspend; + default: + return 0; + } +} + +static void cpm_suspend_standby(unsigned int mask) +{ + unsigned long tcr_save; + + /* disable decrement interrupt */ + tcr_save = mfspr(SPRN_TCR); + mtspr(SPRN_TCR, tcr_save & ~TCR_DIE); + + /* go to sleep state */ + cpm_idle_sleep(mask); + + /* restore decrement interrupt */ + mtspr(SPRN_TCR, tcr_save); +} + +static int cpm_suspend_enter(suspend_state_t state) +{ + switch (state) { + case PM_SUSPEND_STANDBY: + cpm_suspend_standby(cpm.standby); + break; + case PM_SUSPEND_MEM: + cpm_suspend_standby(cpm.suspend); + break; + } + + return 0; +} + +static struct platform_suspend_ops cpm_suspend_ops = { + .valid = cpm_suspend_valid, + .enter = cpm_suspend_enter, +}; + +static int cpm_get_uint_property(struct device_node *np, + const char *name) +{ + int len; + const unsigned int *prop = of_get_property(np, name, &len); + + if (prop == NULL || len < sizeof(u32)) + return 0; + + return *prop; +} + +static int __init cpm_init(void) +{ + struct device_node *np; + int dcr_base, dcr_len; + int ret = 0; + + if (!cpm.powersave_off) { + cpm_idle_config(CPM_IDLE_WAIT); + ppc_md.power_save = &cpm_idle; + } + + np = of_find_compatible_node(NULL, NULL, "ibm,cpm"); + if (!np) { + ret = -EINVAL; + goto out; + } + + dcr_base = dcr_resource_start(np, 0); + dcr_len = dcr_resource_len(np, 0); + + if (dcr_base == 0 || dcr_len == 0) { + printk(KERN_ERR "cpm: could not parse dcr property for %s\n", + np->full_name); + ret = -EINVAL; + goto out; + } + + cpm.dcr_host = dcr_map(np, dcr_base, dcr_len); + + if (!DCR_MAP_OK(cpm.dcr_host)) { + printk(KERN_ERR "cpm: failed to map dcr property for %s\n", + np->full_name); + ret = -EINVAL; + goto out; + } + + /* All 4xx SoCs with a CPM controller have one of two + * different order for the CPM registers. Some have the + * CPM registers in the following order (ER,FR,SR). The + * others have them in the following order (SR,ER,FR). + */ + + if (cpm_get_uint_property(np, "er-offset") == 0) { + cpm.dcr_offset[CPM_ER] = 0; + cpm.dcr_offset[CPM_FR] = 1; + cpm.dcr_offset[CPM_SR] = 2; + } else { + cpm.dcr_offset[CPM_ER] = 1; + cpm.dcr_offset[CPM_FR] = 2; + cpm.dcr_offset[CPM_SR] = 0; + } + + /* Now let's see what IPs to turn off for the following modes */ + + cpm.unused = cpm_get_uint_property(np, "unused-units"); + cpm.idle_doze = cpm_get_uint_property(np, "idle-doze"); + cpm.standby = cpm_get_uint_property(np, "standby"); + cpm.suspend = cpm_get_uint_property(np, "suspend"); + + /* If some IPs are unused let's turn them off now */ + + if (cpm.unused) { + cpm_set(CPM_ER, cpm.unused); + cpm_set(CPM_FR, cpm.unused); + } + + /* Now let's export interfaces */ + + if (!cpm.powersave_off && cpm.idle_doze) + cpm_idle_config_sysfs(); + + if (cpm.standby || cpm.suspend) + suspend_set_ops(&cpm_suspend_ops); +out: + if (np) + of_node_put(np); + return ret; +} + +late_initcall(cpm_init); + +static int __init cpm_powersave_off(char *arg) +{ + cpm.powersave_off = 1; + return 0; +} +__setup("powersave=off", cpm_powersave_off); diff --git a/arch/powerpc/sysdev/tsi108_dev.c b/arch/powerpc/sysdev/tsi108_dev.c index d4d15aaf18fa..ee056807b52c 100644 --- a/arch/powerpc/sysdev/tsi108_dev.c +++ b/arch/powerpc/sysdev/tsi108_dev.c @@ -19,6 +19,7 @@ #include <linux/module.h> #include <linux/device.h> #include <linux/platform_device.h> +#include <linux/of_net.h> #include <asm/tsi108.h> #include <asm/system.h> @@ -83,8 +84,8 @@ static int __init tsi108_eth_of_init(void) memset(&tsi_eth_data, 0, sizeof(tsi_eth_data)); ret = of_address_to_resource(np, 0, &r[0]); - DBG("%s: name:start->end = %s:0x%lx-> 0x%lx\n", - __func__,r[0].name, r[0].start, r[0].end); + DBG("%s: name:start->end = %s:%pR\n", + __func__, r[0].name, &r[0]); if (ret) goto err; @@ -92,8 +93,8 @@ static int __init tsi108_eth_of_init(void) r[1].start = irq_of_parse_and_map(np, 0); r[1].end = irq_of_parse_and_map(np, 0); r[1].flags = IORESOURCE_IRQ; - DBG("%s: name:start->end = %s:0x%lx-> 0x%lx\n", - __func__,r[1].name, r[1].start, r[1].end); + DBG("%s: name:start->end = %s:%pR\n", + __func__, r[1].name, &r[1]); tsi_eth_dev = platform_device_register_simple("tsi-ethernet", i++, &r[0], |