// SPDX-License-Identifier: GPL-2.0 /* * OMAP mailbox driver * * Copyright (C) 2006-2009 Nokia Corporation. All rights reserved. * Copyright (C) 2013-2021 Texas Instruments Incorporated - https://www.ti.com * * Contact: Hiroshi DOYU <[email protected]> * Suman Anna <[email protected]> */ #include <linux/interrupt.h> #include <linux/spinlock.h> #include <linux/mutex.h> #include <linux/slab.h> #include <linux/kfifo.h> #include <linux/err.h> #include <linux/module.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <linux/mailbox_controller.h> #include <linux/mailbox_client.h> #include "mailbox.h" #define MAILBOX_REVISION … #define MAILBOX_MESSAGE(m) … #define MAILBOX_FIFOSTATUS(m) … #define MAILBOX_MSGSTATUS(m) … #define OMAP2_MAILBOX_IRQSTATUS(u) … #define OMAP2_MAILBOX_IRQENABLE(u) … #define OMAP4_MAILBOX_IRQSTATUS(u) … #define OMAP4_MAILBOX_IRQENABLE(u) … #define OMAP4_MAILBOX_IRQENABLE_CLR(u) … #define MAILBOX_IRQSTATUS(type, u) … #define MAILBOX_IRQENABLE(type, u) … #define MAILBOX_IRQDISABLE(type, u) … #define MAILBOX_IRQ_NEWMSG(m) … #define MAILBOX_IRQ_NOTFULL(m) … /* Interrupt register configuration types */ #define MBOX_INTR_CFG_TYPE1 … #define MBOX_INTR_CFG_TYPE2 … omap_mbox_irq_t; struct omap_mbox_fifo { … }; struct omap_mbox_match_data { … }; struct omap_mbox_device { … }; struct omap_mbox { … }; static inline unsigned int mbox_read_reg(struct omap_mbox_device *mdev, size_t ofs) { … } static inline void mbox_write_reg(struct omap_mbox_device *mdev, u32 val, size_t ofs) { … } /* Mailbox FIFO handle functions */ static u32 mbox_fifo_read(struct omap_mbox *mbox) { … } static void mbox_fifo_write(struct omap_mbox *mbox, u32 msg) { … } static int mbox_fifo_empty(struct omap_mbox *mbox) { … } static int mbox_fifo_full(struct omap_mbox *mbox) { … } /* Mailbox IRQ handle functions */ static void ack_mbox_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq) { … } static int is_mbox_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq) { … } static void omap_mbox_enable_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq) { … } static void omap_mbox_disable_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq) { … } /* * Mailbox interrupt handler */ static void __mbox_tx_interrupt(struct omap_mbox *mbox) { … } static void __mbox_rx_interrupt(struct omap_mbox *mbox) { … } static irqreturn_t mbox_interrupt(int irq, void *p) { … } static int omap_mbox_startup(struct omap_mbox *mbox) { … } static void omap_mbox_fini(struct omap_mbox *mbox) { … } static int omap_mbox_chan_startup(struct mbox_chan *chan) { … } static void omap_mbox_chan_shutdown(struct mbox_chan *chan) { … } static int omap_mbox_chan_send_noirq(struct omap_mbox *mbox, u32 msg) { … } static int omap_mbox_chan_send(struct omap_mbox *mbox, u32 msg) { … } static int omap_mbox_chan_send_data(struct mbox_chan *chan, void *data) { … } static const struct mbox_chan_ops omap_mbox_chan_ops = …; #ifdef CONFIG_PM_SLEEP static int omap_mbox_suspend(struct device *dev) { … } static int omap_mbox_resume(struct device *dev) { … } #endif static const struct dev_pm_ops omap_mbox_pm_ops = …; static const struct omap_mbox_match_data omap2_data = …; static const struct omap_mbox_match_data omap4_data = …; static const struct of_device_id omap_mailbox_of_match[] = …; MODULE_DEVICE_TABLE(of, omap_mailbox_of_match); static struct mbox_chan *omap_mbox_of_xlate(struct mbox_controller *controller, const struct of_phandle_args *sp) { … } static int omap_mbox_probe(struct platform_device *pdev) { … } static struct platform_driver omap_mbox_driver = …; module_platform_driver(…) …; MODULE_LICENSE(…) …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_AUTHOR(…) …;
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