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https://github.com/tbsdtv/linux_media.git
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bf1fa6f155
Pull ARM SoC updates from Arnd Bergmann: "These are mostly minor cleanups and bugfixes that address harmless problems. The largest branch is a conversion of the omap platform to use GPIO descriptors throughout the tree, for any devices that are not fully converted to devicetree. The Samsung Exynos platform gains back support for the Exynos4212 chip that was previously unused and removed but is now used for the Samsung Galaxy Tab3" * tag 'soc-arm-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (24 commits) ARM: omap2: Fix copy/paste bug MAINTAINERS: Replace my email address Input: ads7846 - fix pointer cast warning Input: ads7846 - Fix usage of match data ARM: omap2: Fix checkpatch issues arm: omap1: replace printk() with pr_err macro ARM: omap: Fix checkpatch issues ARM: s3c: Switch i2c drivers back to use .probe() ARM: versatile: mark mmc_status() static ARM: spear: include "pl080.h" for pl080_get_signal() prototype ARM: sa1100: address missing prototype warnings ARM: pxa: fix missing-prototypes warnings ARM: orion5x: fix d2net gpio initialization ARM: omap2: fix missing tick_broadcast() prototype ARM: omap1: add missing include ARM: lpc32xx: add missing include ARM: imx: add missing include ARM: highbank: add missing include ARM: ep93xx: fix missing-prototype warnings ARM: davinci: fix davinci_cpufreq_init() declaration ...
257 lines
6.1 KiB
C
257 lines
6.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* linux/arch/arm/mach-pxa/pxa25x.c
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*
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* Author: Nicolas Pitre
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* Created: Jun 15, 2001
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* Copyright: MontaVista Software Inc.
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*
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* Code specific to PXA21x/25x/26x variants.
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*
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* Since this file should be linked before any other machine specific file,
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* the __initcall() here will be executed first. This serves as default
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* initialization stuff for PXA machines which can be overridden later if
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* need be.
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*/
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#include <linux/dmaengine.h>
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#include <linux/dma/pxa-dma.h>
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#include <linux/gpio.h>
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#include <linux/gpio-pxa.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/suspend.h>
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#include <linux/syscore_ops.h>
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#include <linux/irq.h>
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#include <linux/irqchip.h>
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#include <linux/platform_data/mmp_dma.h>
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#include <linux/soc/pxa/cpu.h>
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#include <linux/soc/pxa/smemc.h>
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#include <asm/mach/map.h>
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#include <asm/suspend.h>
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#include "irqs.h"
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#include "pxa25x.h"
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#include "reset.h"
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#include "pm.h"
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#include "addr-map.h"
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#include "smemc.h"
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#include "generic.h"
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#include "devices.h"
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/*
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* Various clock factors driven by the CCCR register.
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*/
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#ifdef CONFIG_PM
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#define SAVE(x) sleep_save[SLEEP_SAVE_##x] = x
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#define RESTORE(x) x = sleep_save[SLEEP_SAVE_##x]
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/*
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* List of global PXA peripheral registers to preserve.
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* More ones like CP and general purpose register values are preserved
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* with the stack pointer in sleep.S.
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*/
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enum {
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SLEEP_SAVE_PSTR,
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SLEEP_SAVE_COUNT
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};
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static void pxa25x_cpu_pm_save(unsigned long *sleep_save)
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{
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SAVE(PSTR);
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}
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static void pxa25x_cpu_pm_restore(unsigned long *sleep_save)
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{
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RESTORE(PSTR);
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}
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static void pxa25x_cpu_pm_enter(suspend_state_t state)
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{
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/* Clear reset status */
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RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR;
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switch (state) {
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case PM_SUSPEND_MEM:
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cpu_suspend(PWRMODE_SLEEP, pxa25x_finish_suspend);
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break;
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}
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}
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static int pxa25x_cpu_pm_prepare(void)
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{
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/* set resume return address */
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PSPR = __pa_symbol(cpu_resume);
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return 0;
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}
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static void pxa25x_cpu_pm_finish(void)
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{
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/* ensure not to come back here if it wasn't intended */
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PSPR = 0;
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}
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static struct pxa_cpu_pm_fns pxa25x_cpu_pm_fns = {
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.save_count = SLEEP_SAVE_COUNT,
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.valid = suspend_valid_only_mem,
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.save = pxa25x_cpu_pm_save,
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.restore = pxa25x_cpu_pm_restore,
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.enter = pxa25x_cpu_pm_enter,
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.prepare = pxa25x_cpu_pm_prepare,
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.finish = pxa25x_cpu_pm_finish,
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};
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static void __init pxa25x_init_pm(void)
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{
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pxa_cpu_pm_fns = &pxa25x_cpu_pm_fns;
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}
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#else
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static inline void pxa25x_init_pm(void) {}
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#endif
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/* PXA25x: supports wakeup from GPIO0..GPIO15 and RTC alarm
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*/
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static int pxa25x_set_wake(struct irq_data *d, unsigned int on)
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{
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int gpio = pxa_irq_to_gpio(d->irq);
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uint32_t mask = 0;
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if (gpio >= 0 && gpio < 85)
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return gpio_set_wake(gpio, on);
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if (d->irq == IRQ_RTCAlrm) {
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mask = PWER_RTC;
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goto set_pwer;
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}
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return -EINVAL;
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set_pwer:
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if (on)
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PWER |= mask;
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else
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PWER &=~mask;
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return 0;
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}
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void __init pxa25x_init_irq(void)
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{
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pxa_init_irq(32, pxa25x_set_wake);
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set_handle_irq(pxa25x_handle_irq);
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}
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static int __init __init
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pxa25x_dt_init_irq(struct device_node *node, struct device_node *parent)
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{
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pxa_dt_irq_init(pxa25x_set_wake);
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set_handle_irq(icip_handle_irq);
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return 0;
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}
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IRQCHIP_DECLARE(pxa25x_intc, "marvell,pxa-intc", pxa25x_dt_init_irq);
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static struct map_desc pxa25x_io_desc[] __initdata = {
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{ /* Mem Ctl */
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.virtual = (unsigned long)SMEMC_VIRT,
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.pfn = __phys_to_pfn(PXA2XX_SMEMC_BASE),
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.length = SMEMC_SIZE,
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.type = MT_DEVICE
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}, { /* UNCACHED_PHYS_0 */
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.virtual = UNCACHED_PHYS_0,
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.pfn = __phys_to_pfn(0x00000000),
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.length = UNCACHED_PHYS_0_SIZE,
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.type = MT_DEVICE
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},
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};
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void __init pxa25x_map_io(void)
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{
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pxa_map_io();
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iotable_init(ARRAY_AND_SIZE(pxa25x_io_desc));
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pxa25x_get_clk_frequency_khz(1);
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}
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static struct pxa_gpio_platform_data pxa25x_gpio_info __initdata = {
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.irq_base = PXA_GPIO_TO_IRQ(0),
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.gpio_set_wake = gpio_set_wake,
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};
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static struct platform_device *pxa25x_devices[] __initdata = {
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&pxa25x_device_udc,
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&pxa_device_pmu,
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&pxa_device_i2s,
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&sa1100_device_rtc,
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&pxa25x_device_ssp,
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&pxa25x_device_nssp,
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&pxa25x_device_assp,
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&pxa25x_device_pwm0,
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&pxa25x_device_pwm1,
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&pxa_device_asoc_platform,
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};
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static const struct dma_slave_map pxa25x_slave_map[] = {
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/* PXA25x, PXA27x and PXA3xx common entries */
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{ "pxa2xx-ac97", "pcm_pcm_mic_mono", PDMA_FILTER_PARAM(LOWEST, 8) },
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{ "pxa2xx-ac97", "pcm_pcm_aux_mono_in", PDMA_FILTER_PARAM(LOWEST, 9) },
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{ "pxa2xx-ac97", "pcm_pcm_aux_mono_out",
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PDMA_FILTER_PARAM(LOWEST, 10) },
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{ "pxa2xx-ac97", "pcm_pcm_stereo_in", PDMA_FILTER_PARAM(LOWEST, 11) },
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{ "pxa2xx-ac97", "pcm_pcm_stereo_out", PDMA_FILTER_PARAM(LOWEST, 12) },
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{ "pxa-ssp-dai.1", "rx", PDMA_FILTER_PARAM(LOWEST, 13) },
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{ "pxa-ssp-dai.1", "tx", PDMA_FILTER_PARAM(LOWEST, 14) },
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{ "pxa-ssp-dai.2", "rx", PDMA_FILTER_PARAM(LOWEST, 15) },
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{ "pxa-ssp-dai.2", "tx", PDMA_FILTER_PARAM(LOWEST, 16) },
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{ "pxa2xx-ir", "rx", PDMA_FILTER_PARAM(LOWEST, 17) },
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{ "pxa2xx-ir", "tx", PDMA_FILTER_PARAM(LOWEST, 18) },
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{ "pxa2xx-mci.0", "rx", PDMA_FILTER_PARAM(LOWEST, 21) },
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{ "pxa2xx-mci.0", "tx", PDMA_FILTER_PARAM(LOWEST, 22) },
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/* PXA25x specific map */
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{ "pxa25x-ssp.0", "rx", PDMA_FILTER_PARAM(LOWEST, 13) },
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{ "pxa25x-ssp.0", "tx", PDMA_FILTER_PARAM(LOWEST, 14) },
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{ "pxa25x-nssp.1", "rx", PDMA_FILTER_PARAM(LOWEST, 15) },
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{ "pxa25x-nssp.1", "tx", PDMA_FILTER_PARAM(LOWEST, 16) },
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{ "pxa25x-nssp.2", "rx", PDMA_FILTER_PARAM(LOWEST, 23) },
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{ "pxa25x-nssp.2", "tx", PDMA_FILTER_PARAM(LOWEST, 24) },
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};
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static struct mmp_dma_platdata pxa25x_dma_pdata = {
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.dma_channels = 16,
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.nb_requestors = 40,
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.slave_map = pxa25x_slave_map,
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.slave_map_cnt = ARRAY_SIZE(pxa25x_slave_map),
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};
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static int __init pxa25x_init(void)
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{
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int ret = 0;
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if (cpu_is_pxa25x()) {
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pxa_register_wdt(RCSR);
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pxa25x_init_pm();
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register_syscore_ops(&pxa_irq_syscore_ops);
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register_syscore_ops(&pxa2xx_mfp_syscore_ops);
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if (!of_have_populated_dt()) {
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pxa2xx_set_dmac_info(&pxa25x_dma_pdata);
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pxa_register_device(&pxa25x_device_gpio, &pxa25x_gpio_info);
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ret = platform_add_devices(pxa25x_devices,
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ARRAY_SIZE(pxa25x_devices));
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}
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}
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return ret;
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}
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postcore_initcall(pxa25x_init);
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