diff options
Diffstat (limited to 'arch/powerpc/sysdev/qe_lib')
| -rw-r--r-- | arch/powerpc/sysdev/qe_lib/Kconfig | 13 | ||||
| -rw-r--r-- | arch/powerpc/sysdev/qe_lib/Makefile | 2 | ||||
| -rw-r--r-- | arch/powerpc/sysdev/qe_lib/gpio.c | 149 | ||||
| -rw-r--r-- | arch/powerpc/sysdev/qe_lib/qe.c | 94 | ||||
| -rw-r--r-- | arch/powerpc/sysdev/qe_lib/qe_ic.c | 14 | ||||
| -rw-r--r-- | arch/powerpc/sysdev/qe_lib/qe_io.c | 94 | ||||
| -rw-r--r-- | arch/powerpc/sysdev/qe_lib/ucc.c | 7 | ||||
| -rw-r--r-- | arch/powerpc/sysdev/qe_lib/usb.c | 55 |
8 files changed, 275 insertions, 153 deletions
diff --git a/arch/powerpc/sysdev/qe_lib/Kconfig b/arch/powerpc/sysdev/qe_lib/Kconfig index adc66212a41..4bb18f57901 100644 --- a/arch/powerpc/sysdev/qe_lib/Kconfig +++ b/arch/powerpc/sysdev/qe_lib/Kconfig @@ -20,3 +20,16 @@ config UCC bool default y if UCC_FAST || UCC_SLOW +config QE_USB + bool + help + QE USB Host Controller support + +config QE_GPIO + bool "QE GPIO support" + depends on QUICC_ENGINE + select GENERIC_GPIO + select HAVE_GPIO_LIB + help + Say Y here if you're going to use hardware that connects to the + QE GPIOs. diff --git a/arch/powerpc/sysdev/qe_lib/Makefile b/arch/powerpc/sysdev/qe_lib/Makefile index 874fe1a5b1c..f1855c18529 100644 --- a/arch/powerpc/sysdev/qe_lib/Makefile +++ b/arch/powerpc/sysdev/qe_lib/Makefile @@ -6,3 +6,5 @@ obj-$(CONFIG_QUICC_ENGINE)+= qe.o qe_ic.o qe_io.o obj-$(CONFIG_UCC) += ucc.o obj-$(CONFIG_UCC_SLOW) += ucc_slow.o obj-$(CONFIG_UCC_FAST) += ucc_fast.o +obj-$(CONFIG_QE_USB) += usb.o +obj-$(CONFIG_QE_GPIO) += gpio.o diff --git a/arch/powerpc/sysdev/qe_lib/gpio.c b/arch/powerpc/sysdev/qe_lib/gpio.c new file mode 100644 index 00000000000..8e5a0bc36d0 --- /dev/null +++ b/arch/powerpc/sysdev/qe_lib/gpio.c @@ -0,0 +1,149 @@ +/* + * QUICC Engine GPIOs + * + * Copyright (c) MontaVista Software, Inc. 2008. + * + * Author: Anton Vorontsov <avorontsov@ru.mvista.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. + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/spinlock.h> +#include <linux/io.h> +#include <linux/of.h> +#include <linux/of_gpio.h> +#include <linux/gpio.h> +#include <asm/qe.h> + +struct qe_gpio_chip { + struct of_mm_gpio_chip mm_gc; + spinlock_t lock; + + /* shadowed data register to clear/set bits safely */ + u32 cpdata; +}; + +static inline struct qe_gpio_chip * +to_qe_gpio_chip(struct of_mm_gpio_chip *mm_gc) +{ + return container_of(mm_gc, struct qe_gpio_chip, mm_gc); +} + +static void qe_gpio_save_regs(struct of_mm_gpio_chip *mm_gc) +{ + struct qe_gpio_chip *qe_gc = to_qe_gpio_chip(mm_gc); + struct qe_pio_regs __iomem *regs = mm_gc->regs; + + qe_gc->cpdata = in_be32(®s->cpdata); +} + +static int qe_gpio_get(struct gpio_chip *gc, unsigned int gpio) +{ + struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc); + struct qe_pio_regs __iomem *regs = mm_gc->regs; + u32 pin_mask = 1 << (QE_PIO_PINS - 1 - gpio); + + return in_be32(®s->cpdata) & pin_mask; +} + +static void qe_gpio_set(struct gpio_chip *gc, unsigned int gpio, int val) +{ + struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc); + struct qe_gpio_chip *qe_gc = to_qe_gpio_chip(mm_gc); + struct qe_pio_regs __iomem *regs = mm_gc->regs; + unsigned long flags; + u32 pin_mask = 1 << (QE_PIO_PINS - 1 - gpio); + + spin_lock_irqsave(&qe_gc->lock, flags); + + if (val) + qe_gc->cpdata |= pin_mask; + else + qe_gc->cpdata &= ~pin_mask; + + out_be32(®s->cpdata, qe_gc->cpdata); + + spin_unlock_irqrestore(&qe_gc->lock, flags); +} + +static int qe_gpio_dir_in(struct gpio_chip *gc, unsigned int gpio) +{ + struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc); + struct qe_gpio_chip *qe_gc = to_qe_gpio_chip(mm_gc); + unsigned long flags; + + spin_lock_irqsave(&qe_gc->lock, flags); + + __par_io_config_pin(mm_gc->regs, gpio, QE_PIO_DIR_IN, 0, 0, 0); + + spin_unlock_irqrestore(&qe_gc->lock, flags); + + return 0; +} + +static int qe_gpio_dir_out(struct gpio_chip *gc, unsigned int gpio, int val) +{ + struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc); + struct qe_gpio_chip *qe_gc = to_qe_gpio_chip(mm_gc); + unsigned long flags; + + spin_lock_irqsave(&qe_gc->lock, flags); + + __par_io_config_pin(mm_gc->regs, gpio, QE_PIO_DIR_OUT, 0, 0, 0); + + spin_unlock_irqrestore(&qe_gc->lock, flags); + + qe_gpio_set(gc, gpio, val); + + return 0; +} + +static int __init qe_add_gpiochips(void) +{ + struct device_node *np; + + for_each_compatible_node(np, NULL, "fsl,mpc8323-qe-pario-bank") { + int ret; + struct qe_gpio_chip *qe_gc; + struct of_mm_gpio_chip *mm_gc; + struct of_gpio_chip *of_gc; + struct gpio_chip *gc; + + qe_gc = kzalloc(sizeof(*qe_gc), GFP_KERNEL); + if (!qe_gc) { + ret = -ENOMEM; + goto err; + } + + spin_lock_init(&qe_gc->lock); + + mm_gc = &qe_gc->mm_gc; + of_gc = &mm_gc->of_gc; + gc = &of_gc->gc; + + mm_gc->save_regs = qe_gpio_save_regs; + of_gc->gpio_cells = 2; + gc->ngpio = QE_PIO_PINS; + gc->direction_input = qe_gpio_dir_in; + gc->direction_output = qe_gpio_dir_out; + gc->get = qe_gpio_get; + gc->set = qe_gpio_set; + + ret = of_mm_gpiochip_add(np, mm_gc); + if (ret) + goto err; + continue; +err: + pr_err("%s: registration failed with status %d\n", + np->full_name, ret); + kfree(qe_gc); + /* try others anyway */ + } + return 0; +} +arch_initcall(qe_add_gpiochips); diff --git a/arch/powerpc/sysdev/qe_lib/qe.c b/arch/powerpc/sysdev/qe_lib/qe.c index cff550eec7e..9e82d7e725a 100644 --- a/arch/powerpc/sysdev/qe_lib/qe.c +++ b/arch/powerpc/sysdev/qe_lib/qe.c @@ -35,7 +35,6 @@ #include <asm/rheap.h> static void qe_snums_init(void); -static void qe_muram_init(void); static int qe_sdma_init(void); static DEFINE_SPINLOCK(qe_lock); @@ -88,7 +87,7 @@ phys_addr_t get_qe_base(void) EXPORT_SYMBOL(get_qe_base); -void qe_reset(void) +void __init qe_reset(void) { if (qe_immr == NULL) qe_immr = ioremap(get_qe_base(), QE_IMMAP_SIZE); @@ -325,97 +324,6 @@ static int qe_sdma_init(void) return 0; } -/* - * muram_alloc / muram_free bits. - */ -static DEFINE_SPINLOCK(qe_muram_lock); - -/* 16 blocks should be enough to satisfy all requests - * until the memory subsystem goes up... */ -static rh_block_t qe_boot_muram_rh_block[16]; -static rh_info_t qe_muram_info; - -static void qe_muram_init(void) -{ - struct device_node *np; - const u32 *address; - u64 size; - unsigned int flags; - - /* initialize the info header */ - rh_init(&qe_muram_info, 1, - sizeof(qe_boot_muram_rh_block) / - sizeof(qe_boot_muram_rh_block[0]), qe_boot_muram_rh_block); - - /* Attach the usable muram area */ - /* XXX: This is a subset of the available muram. It - * varies with the processor and the microcode patches activated. - */ - np = of_find_compatible_node(NULL, NULL, "fsl,qe-muram-data"); - if (!np) { - np = of_find_node_by_name(NULL, "data-only"); - if (!np) { - WARN_ON(1); - return; - } - } - - address = of_get_address(np, 0, &size, &flags); - WARN_ON(!address); - - of_node_put(np); - if (address) - rh_attach_region(&qe_muram_info, *address, (int)size); -} - -/* This function returns an index into the MURAM area. - */ -unsigned long qe_muram_alloc(int size, int align) -{ - unsigned long start; - unsigned long flags; - - spin_lock_irqsave(&qe_muram_lock, flags); - start = rh_alloc_align(&qe_muram_info, size, align, "QE"); - spin_unlock_irqrestore(&qe_muram_lock, flags); - - return start; -} -EXPORT_SYMBOL(qe_muram_alloc); - -int qe_muram_free(unsigned long offset) -{ - int ret; - unsigned long flags; - - spin_lock_irqsave(&qe_muram_lock, flags); - ret = rh_free(&qe_muram_info, offset); - spin_unlock_irqrestore(&qe_muram_lock, flags); - - return ret; -} -EXPORT_SYMBOL(qe_muram_free); - -/* not sure if this is ever needed */ -unsigned long qe_muram_alloc_fixed(unsigned long offset, int size) -{ - unsigned long start; - unsigned long flags; - - spin_lock_irqsave(&qe_muram_lock, flags); - start = rh_alloc_fixed(&qe_muram_info, offset, size, "commproc"); - spin_unlock_irqrestore(&qe_muram_lock, flags); - - return start; -} -EXPORT_SYMBOL(qe_muram_alloc_fixed); - -void qe_muram_dump(void) -{ - rh_dump(&qe_muram_info); -} -EXPORT_SYMBOL(qe_muram_dump); - /* The maximum number of RISCs we support */ #define MAX_QE_RISC 2 diff --git a/arch/powerpc/sysdev/qe_lib/qe_ic.c b/arch/powerpc/sysdev/qe_lib/qe_ic.c index f59444d3be7..63cdf9887f3 100644 --- a/arch/powerpc/sysdev/qe_lib/qe_ic.c +++ b/arch/powerpc/sysdev/qe_lib/qe_ic.c @@ -329,21 +329,19 @@ void __init qe_ic_init(struct device_node *node, unsigned int flags, struct resource res; u32 temp = 0, ret, high_active = 0; + ret = of_address_to_resource(node, 0, &res); + if (ret) + return; + qe_ic = alloc_bootmem(sizeof(struct qe_ic)); if (qe_ic == NULL) return; memset(qe_ic, 0, sizeof(struct qe_ic)); - qe_ic->irqhost = irq_alloc_host(of_node_get(node), IRQ_HOST_MAP_LINEAR, + qe_ic->irqhost = irq_alloc_host(node, IRQ_HOST_MAP_LINEAR, NR_QE_IC_INTS, &qe_ic_host_ops, 0); - if (qe_ic->irqhost == NULL) { - of_node_put(node); - return; - } - - ret = of_address_to_resource(node, 0, &res); - if (ret) + if (qe_ic->irqhost == NULL) return; qe_ic->regs = ioremap(res.start, res.end - res.start + 1); diff --git a/arch/powerpc/sysdev/qe_lib/qe_io.c b/arch/powerpc/sysdev/qe_lib/qe_io.c index 93916a48afe..7c87460179e 100644 --- a/arch/powerpc/sysdev/qe_lib/qe_io.c +++ b/arch/powerpc/sysdev/qe_lib/qe_io.c @@ -28,21 +28,7 @@ #undef DEBUG -#define NUM_OF_PINS 32 - -struct port_regs { - __be32 cpodr; /* Open drain register */ - __be32 cpdata; /* Data register */ - __be32 cpdir1; /* Direction register */ - __be32 cpdir2; /* Direction register */ - __be32 cppar1; /* Pin assignment register */ - __be32 cppar2; /* Pin assignment register */ -#ifdef CONFIG_PPC_85xx - u8 pad[8]; -#endif -}; - -static struct port_regs __iomem *par_io; +static struct qe_pio_regs __iomem *par_io; static int num_par_io_ports = 0; int par_io_init(struct device_node *np) @@ -64,69 +50,79 @@ int par_io_init(struct device_node *np) return 0; } -int par_io_config_pin(u8 port, u8 pin, int dir, int open_drain, - int assignment, int has_irq) +void __par_io_config_pin(struct qe_pio_regs __iomem *par_io, u8 pin, int dir, + int open_drain, int assignment, int has_irq) { - u32 pin_mask1bit, pin_mask2bits, new_mask2bits, tmp_val; - - if (!par_io) - return -1; + u32 pin_mask1bit; + u32 pin_mask2bits; + u32 new_mask2bits; + u32 tmp_val; /* calculate pin location for single and 2 bits information */ - pin_mask1bit = (u32) (1 << (NUM_OF_PINS - (pin + 1))); + pin_mask1bit = (u32) (1 << (QE_PIO_PINS - (pin + 1))); /* Set open drain, if required */ - tmp_val = in_be32(&par_io[port].cpodr); + tmp_val = in_be32(&par_io->cpodr); if (open_drain) - out_be32(&par_io[port].cpodr, pin_mask1bit | tmp_val); + out_be32(&par_io->cpodr, pin_mask1bit | tmp_val); else - out_be32(&par_io[port].cpodr, ~pin_mask1bit & tmp_val); + out_be32(&par_io->cpodr, ~pin_mask1bit & tmp_val); /* define direction */ - tmp_val = (pin > (NUM_OF_PINS / 2) - 1) ? - in_be32(&par_io[port].cpdir2) : - in_be32(&par_io[port].cpdir1); + tmp_val = (pin > (QE_PIO_PINS / 2) - 1) ? + in_be32(&par_io->cpdir2) : + in_be32(&par_io->cpdir1); /* get all bits mask for 2 bit per port */ - pin_mask2bits = (u32) (0x3 << (NUM_OF_PINS - - (pin % (NUM_OF_PINS / 2) + 1) * 2)); + pin_mask2bits = (u32) (0x3 << (QE_PIO_PINS - + (pin % (QE_PIO_PINS / 2) + 1) * 2)); /* Get the final mask we need for the right definition */ - new_mask2bits = (u32) (dir << (NUM_OF_PINS - - (pin % (NUM_OF_PINS / 2) + 1) * 2)); + new_mask2bits = (u32) (dir << (QE_PIO_PINS - + (pin % (QE_PIO_PINS / 2) + 1) * 2)); /* clear and set 2 bits mask */ - if (pin > (NUM_OF_PINS / 2) - 1) { - out_be32(&par_io[port].cpdir2, + if (pin > (QE_PIO_PINS / 2) - 1) { + out_be32(&par_io->cpdir2, ~pin_mask2bits & tmp_val); tmp_val &= ~pin_mask2bits; - out_be32(&par_io[port].cpdir2, new_mask2bits | tmp_val); + out_be32(&par_io->cpdir2, new_mask2bits | tmp_val); } else { - out_be32(&par_io[port].cpdir1, + out_be32(&par_io->cpdir1, ~pin_mask2bits & tmp_val); tmp_val &= ~pin_mask2bits; - out_be32(&par_io[port].cpdir1, new_mask2bits | tmp_val); + out_be32(&par_io->cpdir1, new_mask2bits | tmp_val); } /* define pin assignment */ - tmp_val = (pin > (NUM_OF_PINS / 2) - 1) ? - in_be32(&par_io[port].cppar2) : - in_be32(&par_io[port].cppar1); + tmp_val = (pin > (QE_PIO_PINS / 2) - 1) ? + in_be32(&par_io->cppar2) : + in_be32(&par_io->cppar1); - new_mask2bits = (u32) (assignment << (NUM_OF_PINS - - (pin % (NUM_OF_PINS / 2) + 1) * 2)); + new_mask2bits = (u32) (assignment << (QE_PIO_PINS - + (pin % (QE_PIO_PINS / 2) + 1) * 2)); /* clear and set 2 bits mask */ - if (pin > (NUM_OF_PINS / 2) - 1) { - out_be32(&par_io[port].cppar2, + if (pin > (QE_PIO_PINS / 2) - 1) { + out_be32(&par_io->cppar2, ~pin_mask2bits & tmp_val); tmp_val &= ~pin_mask2bits; - out_be32(&par_io[port].cppar2, new_mask2bits | tmp_val); + out_be32(&par_io->cppar2, new_mask2bits | tmp_val); } else { - out_be32(&par_io[port].cppar1, + out_be32(&par_io->cppar1, ~pin_mask2bits & tmp_val); tmp_val &= ~pin_mask2bits; - out_be32(&par_io[port].cppar1, new_mask2bits | tmp_val); + out_be32(&par_io->cppar1, new_mask2bits | tmp_val); } +} +EXPORT_SYMBOL(__par_io_config_pin); + +int par_io_config_pin(u8 port, u8 pin, int dir, int open_drain, + int assignment, int has_irq) +{ + if (!par_io || port >= num_par_io_ports) + return -EINVAL; + __par_io_config_pin(&par_io[port], pin, dir, open_drain, assignment, + has_irq); return 0; } EXPORT_SYMBOL(par_io_config_pin); @@ -137,10 +133,10 @@ int par_io_data_set(u8 port, u8 pin, u8 val) if (port >= num_par_io_ports) return -EINVAL; - if (pin >= NUM_OF_PINS) + if (pin >= QE_PIO_PINS) return -EINVAL; /* calculate pin location */ - pin_mask = (u32) (1 << (NUM_OF_PINS - 1 - pin)); + pin_mask = (u32) (1 << (QE_PIO_PINS - 1 - pin)); tmp_val = in_be32(&par_io[port].cpdata); diff --git a/arch/powerpc/sysdev/qe_lib/ucc.c b/arch/powerpc/sysdev/qe_lib/ucc.c index 0e348d9af8a..d3c7f5af9bc 100644 --- a/arch/powerpc/sysdev/qe_lib/ucc.c +++ b/arch/powerpc/sysdev/qe_lib/ucc.c @@ -26,7 +26,8 @@ #include <asm/qe.h> #include <asm/ucc.h> -static DEFINE_SPINLOCK(ucc_lock); +DEFINE_SPINLOCK(cmxgcr_lock); +EXPORT_SYMBOL(cmxgcr_lock); int ucc_set_qe_mux_mii_mng(unsigned int ucc_num) { @@ -35,10 +36,10 @@ int ucc_set_qe_mux_mii_mng(unsigned int ucc_num) if (ucc_num > UCC_MAX_NUM - 1) return -EINVAL; - spin_lock_irqsave(&ucc_lock, flags); + spin_lock_irqsave(&cmxgcr_lock, flags); clrsetbits_be32(&qe_immr->qmx.cmxgcr, QE_CMXGCR_MII_ENET_MNG, ucc_num << QE_CMXGCR_MII_ENET_MNG_SHIFT); - spin_unlock_irqrestore(&ucc_lock, flags); + spin_unlock_irqrestore(&cmxgcr_lock, flags); return 0; } diff --git a/arch/powerpc/sysdev/qe_lib/usb.c b/arch/powerpc/sysdev/qe_lib/usb.c new file mode 100644 index 00000000000..8105462078e --- /dev/null +++ b/arch/powerpc/sysdev/qe_lib/usb.c @@ -0,0 +1,55 @@ +/* + * QE USB routines + * + * Copyright (c) Freescale Semicondutor, Inc. 2006. + * Shlomi Gridish <gridish@freescale.com> + * Jerry Huang <Chang-Ming.Huang@freescale.com> + * Copyright (c) MontaVista Software, Inc. 2008. + * Anton Vorontsov <avorontsov@ru.mvista.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. + */ + +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/io.h> +#include <asm/immap_qe.h> +#include <asm/qe.h> + +int qe_usb_clock_set(enum qe_clock clk, int rate) +{ + struct qe_mux __iomem *mux = &qe_immr->qmx; + unsigned long flags; + u32 val; + + switch (clk) { + case QE_CLK3: val = QE_CMXGCR_USBCS_CLK3; break; + case QE_CLK5: val = QE_CMXGCR_USBCS_CLK5; break; + case QE_CLK7: val = QE_CMXGCR_USBCS_CLK7; break; + case QE_CLK9: val = QE_CMXGCR_USBCS_CLK9; break; + case QE_CLK13: val = QE_CMXGCR_USBCS_CLK13; break; + case QE_CLK17: val = QE_CMXGCR_USBCS_CLK17; break; + case QE_CLK19: val = QE_CMXGCR_USBCS_CLK19; break; + case QE_CLK21: val = QE_CMXGCR_USBCS_CLK21; break; + case QE_BRG9: val = QE_CMXGCR_USBCS_BRG9; break; + case QE_BRG10: val = QE_CMXGCR_USBCS_BRG10; break; + default: + pr_err("%s: requested unknown clock %d\n", __func__, clk); + return -EINVAL; + } + + if (qe_clock_is_brg(clk)) + qe_setbrg(clk, rate, 1); + + spin_lock_irqsave(&cmxgcr_lock, flags); + + clrsetbits_be32(&mux->cmxgcr, QE_CMXGCR_USBCS, val); + + spin_unlock_irqrestore(&cmxgcr_lock, flags); + + return 0; +} +EXPORT_SYMBOL(qe_usb_clock_set); |