Merge branch 'mailbox-for-next' of git://git.linaro.org/landing-teams/working/fujitsu/integration
Pull mailbox updates from Jassi Brar:
"OMAP:
- Remove non-DT support from mailbox driver
- Move PM from client calls to native driver suspend/resume
- Trivial cleanups to make checkpatch happy
STI:
- Check return from devm_ioremap_resource as ERR_PTR, not NULL"
* 'mailbox-for-next' of git://git.linaro.org/landing-teams/working/fujitsu/integration:
mailbox: Fix devm_ioremap_resource error detection code
mailbox/omap: kill omap_mbox_{save/restore}_ctx() functions
mailbox/omap: check for any unread messages during suspend
mailbox/omap: add support for suspend/resume
mailbox/omap: store mailbox interrupt type in omap_mbox_device
mailbox/omap: add blank lines after declarations
mailbox/omap: remove FSF mailing address paragraph
mailbox/omap: use variable name for sizeof() operator
mailbox/omap: drop legacy platform device support
This commit is contained in:
Linus Torvalds
Коммит
10cd715804
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@ -430,8 +430,8 @@ static int sti_mbox_probe(struct platform_device *pdev)
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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mdev->base = devm_ioremap_resource(&pdev->dev, res);
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if (!mdev->base)
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return -ENOMEM;
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if (IS_ERR(mdev->base))
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return PTR_ERR(mdev->base);
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ret = of_property_read_string(np, "mbox-name", &mdev->name);
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if (ret)
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@ -2,7 +2,7 @@
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* OMAP mailbox driver
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*
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* Copyright (C) 2006-2009 Nokia Corporation. All rights reserved.
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* Copyright (C) 2013-2014 Texas Instruments Inc.
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* Copyright (C) 2013-2016 Texas Instruments Incorporated - http://www.ti.com
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*
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* Contact: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
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* Suman Anna <s-anna@ti.com>
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@ -15,12 +15,6 @@
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*
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*/
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#include <linux/interrupt.h>
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@ -33,7 +27,6 @@
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#include <linux/of_device.h>
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#include <linux/platform_device.h>
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#include <linux/pm_runtime.h>
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#include <linux/platform_data/mailbox-omap.h>
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#include <linux/omap-mailbox.h>
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#include <linux/mailbox_controller.h>
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#include <linux/mailbox_client.h>
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@ -62,12 +55,9 @@
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#define MAILBOX_IRQ_NEWMSG(m) (1 << (2 * (m)))
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#define MAILBOX_IRQ_NOTFULL(m) (1 << (2 * (m) + 1))
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#define MBOX_REG_SIZE 0x120
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#define OMAP4_MBOX_REG_SIZE 0x130
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#define MBOX_NR_REGS (MBOX_REG_SIZE / sizeof(u32))
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#define OMAP4_MBOX_NR_REGS (OMAP4_MBOX_REG_SIZE / sizeof(u32))
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/* Interrupt register configuration types */
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#define MBOX_INTR_CFG_TYPE1 0
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#define MBOX_INTR_CFG_TYPE2 1
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struct omap_mbox_fifo {
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unsigned long msg;
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@ -91,8 +81,10 @@ struct omap_mbox_device {
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struct device *dev;
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struct mutex cfg_lock;
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void __iomem *mbox_base;
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u32 *irq_ctx;
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u32 num_users;
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u32 num_fifos;
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u32 intr_type;
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struct omap_mbox **mboxes;
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struct mbox_controller controller;
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struct list_head elem;
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@ -119,7 +111,6 @@ struct omap_mbox {
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struct omap_mbox_device *parent;
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struct omap_mbox_fifo tx_fifo;
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struct omap_mbox_fifo rx_fifo;
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u32 ctx[OMAP4_MBOX_NR_REGS];
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u32 intr_type;
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struct mbox_chan *chan;
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bool send_no_irq;
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@ -157,24 +148,28 @@ void mbox_write_reg(struct omap_mbox_device *mdev, u32 val, size_t ofs)
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static mbox_msg_t mbox_fifo_read(struct omap_mbox *mbox)
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{
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struct omap_mbox_fifo *fifo = &mbox->rx_fifo;
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return (mbox_msg_t) mbox_read_reg(mbox->parent, fifo->msg);
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return (mbox_msg_t)mbox_read_reg(mbox->parent, fifo->msg);
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}
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static void mbox_fifo_write(struct omap_mbox *mbox, mbox_msg_t msg)
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{
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struct omap_mbox_fifo *fifo = &mbox->tx_fifo;
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mbox_write_reg(mbox->parent, msg, fifo->msg);
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}
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static int mbox_fifo_empty(struct omap_mbox *mbox)
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{
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struct omap_mbox_fifo *fifo = &mbox->rx_fifo;
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return (mbox_read_reg(mbox->parent, fifo->msg_stat) == 0);
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}
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static int mbox_fifo_full(struct omap_mbox *mbox)
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{
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struct omap_mbox_fifo *fifo = &mbox->tx_fifo;
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return mbox_read_reg(mbox->parent, fifo->fifo_stat);
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}
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@ -206,49 +201,6 @@ static int is_mbox_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq)
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return (int)(enable & status & bit);
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}
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void omap_mbox_save_ctx(struct mbox_chan *chan)
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{
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int i;
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int nr_regs;
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struct omap_mbox *mbox = mbox_chan_to_omap_mbox(chan);
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if (WARN_ON(!mbox))
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return;
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if (mbox->intr_type)
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nr_regs = OMAP4_MBOX_NR_REGS;
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else
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nr_regs = MBOX_NR_REGS;
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for (i = 0; i < nr_regs; i++) {
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mbox->ctx[i] = mbox_read_reg(mbox->parent, i * sizeof(u32));
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dev_dbg(mbox->dev, "%s: [%02x] %08x\n", __func__,
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i, mbox->ctx[i]);
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}
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}
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EXPORT_SYMBOL(omap_mbox_save_ctx);
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void omap_mbox_restore_ctx(struct mbox_chan *chan)
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{
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int i;
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int nr_regs;
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struct omap_mbox *mbox = mbox_chan_to_omap_mbox(chan);
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if (WARN_ON(!mbox))
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return;
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if (mbox->intr_type)
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nr_regs = OMAP4_MBOX_NR_REGS;
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else
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nr_regs = MBOX_NR_REGS;
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for (i = 0; i < nr_regs; i++) {
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mbox_write_reg(mbox->parent, mbox->ctx[i], i * sizeof(u32));
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dev_dbg(mbox->dev, "%s: [%02x] %08x\n", __func__,
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i, mbox->ctx[i]);
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}
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}
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EXPORT_SYMBOL(omap_mbox_restore_ctx);
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static void _omap_mbox_enable_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq)
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{
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u32 l;
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@ -381,7 +333,7 @@ static struct omap_mbox_queue *mbox_queue_alloc(struct omap_mbox *mbox,
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if (!work)
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return NULL;
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mq = kzalloc(sizeof(struct omap_mbox_queue), GFP_KERNEL);
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mq = kzalloc(sizeof(*mq), GFP_KERNEL);
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if (!mq)
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return NULL;
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@ -525,6 +477,7 @@ static int omap_mbox_register(struct omap_mbox_device *mdev)
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mboxes = mdev->mboxes;
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for (i = 0; mboxes[i]; i++) {
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struct omap_mbox *mbox = mboxes[i];
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mbox->dev = device_create(&omap_mbox_class, mdev->dev,
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0, mbox, "%s", mbox->name);
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if (IS_ERR(mbox->dev)) {
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@ -647,6 +600,52 @@ static const struct mbox_chan_ops omap_mbox_chan_ops = {
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.shutdown = omap_mbox_chan_shutdown,
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};
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#ifdef CONFIG_PM_SLEEP
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static int omap_mbox_suspend(struct device *dev)
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{
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struct omap_mbox_device *mdev = dev_get_drvdata(dev);
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u32 usr, fifo, reg;
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if (pm_runtime_status_suspended(dev))
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return 0;
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for (fifo = 0; fifo < mdev->num_fifos; fifo++) {
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if (mbox_read_reg(mdev, MAILBOX_MSGSTATUS(fifo))) {
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dev_err(mdev->dev, "fifo %d has unexpected unread messages\n",
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fifo);
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return -EBUSY;
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}
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}
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for (usr = 0; usr < mdev->num_users; usr++) {
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reg = MAILBOX_IRQENABLE(mdev->intr_type, usr);
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mdev->irq_ctx[usr] = mbox_read_reg(mdev, reg);
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}
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return 0;
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}
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static int omap_mbox_resume(struct device *dev)
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{
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struct omap_mbox_device *mdev = dev_get_drvdata(dev);
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u32 usr, reg;
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if (pm_runtime_status_suspended(dev))
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return 0;
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for (usr = 0; usr < mdev->num_users; usr++) {
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reg = MAILBOX_IRQENABLE(mdev->intr_type, usr);
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mbox_write_reg(mdev, mdev->irq_ctx[usr], reg);
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}
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return 0;
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}
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#endif
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static const struct dev_pm_ops omap_mbox_pm_ops = {
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SET_SYSTEM_SLEEP_PM_OPS(omap_mbox_suspend, omap_mbox_resume)
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};
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static const struct of_device_id omap_mailbox_of_match[] = {
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{
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.compatible = "ti,omap2-mailbox",
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@ -696,8 +695,6 @@ static int omap_mbox_probe(struct platform_device *pdev)
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int ret;
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struct mbox_chan *chnls;
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struct omap_mbox **list, *mbox, *mboxblk;
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struct omap_mbox_pdata *pdata = pdev->dev.platform_data;
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struct omap_mbox_dev_info *info = NULL;
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struct omap_mbox_fifo_info *finfo, *finfoblk;
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struct omap_mbox_device *mdev;
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struct omap_mbox_fifo *fifo;
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@ -710,36 +707,26 @@ static int omap_mbox_probe(struct platform_device *pdev)
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u32 l;
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int i;
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if (!node && (!pdata || !pdata->info_cnt || !pdata->info)) {
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pr_err("%s: platform not supported\n", __func__);
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if (!node) {
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pr_err("%s: only DT-based devices are supported\n", __func__);
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return -ENODEV;
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}
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if (node) {
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match = of_match_device(omap_mailbox_of_match, &pdev->dev);
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if (!match)
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return -ENODEV;
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intr_type = (u32)match->data;
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match = of_match_device(omap_mailbox_of_match, &pdev->dev);
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if (!match)
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return -ENODEV;
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intr_type = (u32)match->data;
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if (of_property_read_u32(node, "ti,mbox-num-users",
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&num_users))
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return -ENODEV;
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if (of_property_read_u32(node, "ti,mbox-num-users", &num_users))
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return -ENODEV;
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if (of_property_read_u32(node, "ti,mbox-num-fifos",
|
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&num_fifos))
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return -ENODEV;
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if (of_property_read_u32(node, "ti,mbox-num-fifos", &num_fifos))
|
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return -ENODEV;
|
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info_count = of_get_available_child_count(node);
|
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if (!info_count) {
|
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dev_err(&pdev->dev, "no available mbox devices found\n");
|
||||
return -ENODEV;
|
||||
}
|
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} else { /* non-DT device creation */
|
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info_count = pdata->info_cnt;
|
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info = pdata->info;
|
||||
intr_type = pdata->intr_type;
|
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num_users = pdata->num_users;
|
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num_fifos = pdata->num_fifos;
|
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info_count = of_get_available_child_count(node);
|
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if (!info_count) {
|
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dev_err(&pdev->dev, "no available mbox devices found\n");
|
||||
return -ENODEV;
|
||||
}
|
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|
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finfoblk = devm_kzalloc(&pdev->dev, info_count * sizeof(*finfoblk),
|
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|
|
@ -750,38 +737,28 @@ static int omap_mbox_probe(struct platform_device *pdev)
|
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finfo = finfoblk;
|
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child = NULL;
|
||||
for (i = 0; i < info_count; i++, finfo++) {
|
||||
if (node) {
|
||||
child = of_get_next_available_child(node, child);
|
||||
ret = of_property_read_u32_array(child, "ti,mbox-tx",
|
||||
tmp, ARRAY_SIZE(tmp));
|
||||
if (ret)
|
||||
return ret;
|
||||
finfo->tx_id = tmp[0];
|
||||
finfo->tx_irq = tmp[1];
|
||||
finfo->tx_usr = tmp[2];
|
||||
child = of_get_next_available_child(node, child);
|
||||
ret = of_property_read_u32_array(child, "ti,mbox-tx", tmp,
|
||||
ARRAY_SIZE(tmp));
|
||||
if (ret)
|
||||
return ret;
|
||||
finfo->tx_id = tmp[0];
|
||||
finfo->tx_irq = tmp[1];
|
||||
finfo->tx_usr = tmp[2];
|
||||
|
||||
ret = of_property_read_u32_array(child, "ti,mbox-rx",
|
||||
tmp, ARRAY_SIZE(tmp));
|
||||
if (ret)
|
||||
return ret;
|
||||
finfo->rx_id = tmp[0];
|
||||
finfo->rx_irq = tmp[1];
|
||||
finfo->rx_usr = tmp[2];
|
||||
ret = of_property_read_u32_array(child, "ti,mbox-rx", tmp,
|
||||
ARRAY_SIZE(tmp));
|
||||
if (ret)
|
||||
return ret;
|
||||
finfo->rx_id = tmp[0];
|
||||
finfo->rx_irq = tmp[1];
|
||||
finfo->rx_usr = tmp[2];
|
||||
|
||||
finfo->name = child->name;
|
||||
finfo->name = child->name;
|
||||
|
||||
if (of_find_property(child, "ti,mbox-send-noirq", NULL))
|
||||
finfo->send_no_irq = true;
|
||||
|
||||
if (of_find_property(child, "ti,mbox-send-noirq", NULL))
|
||||
finfo->send_no_irq = true;
|
||||
} else {
|
||||
finfo->tx_id = info->tx_id;
|
||||
finfo->rx_id = info->rx_id;
|
||||
finfo->tx_usr = info->usr_id;
|
||||
finfo->tx_irq = info->irq_id;
|
||||
finfo->rx_usr = info->usr_id;
|
||||
finfo->rx_irq = info->irq_id;
|
||||
finfo->name = info->name;
|
||||
info++;
|
||||
}
|
||||
if (finfo->tx_id >= num_fifos || finfo->rx_id >= num_fifos ||
|
||||
finfo->tx_usr >= num_users || finfo->rx_usr >= num_users)
|
||||
return -EINVAL;
|
||||
|
|
@ -796,6 +773,11 @@ static int omap_mbox_probe(struct platform_device *pdev)
|
|||
if (IS_ERR(mdev->mbox_base))
|
||||
return PTR_ERR(mdev->mbox_base);
|
||||
|
||||
mdev->irq_ctx = devm_kzalloc(&pdev->dev, num_users * sizeof(u32),
|
||||
GFP_KERNEL);
|
||||
if (!mdev->irq_ctx)
|
||||
return -ENOMEM;
|
||||
|
||||
/* allocate one extra for marking end of list */
|
||||
list = devm_kzalloc(&pdev->dev, (info_count + 1) * sizeof(*list),
|
||||
GFP_KERNEL);
|
||||
|
|
@ -848,6 +830,7 @@ static int omap_mbox_probe(struct platform_device *pdev)
|
|||
mdev->dev = &pdev->dev;
|
||||
mdev->num_users = num_users;
|
||||
mdev->num_fifos = num_fifos;
|
||||
mdev->intr_type = intr_type;
|
||||
mdev->mboxes = list;
|
||||
|
||||
/* OMAP does not have a Tx-Done IRQ, but rather a Tx-Ready IRQ */
|
||||
|
|
@ -905,6 +888,7 @@ static struct platform_driver omap_mbox_driver = {
|
|||
.remove = omap_mbox_remove,
|
||||
.driver = {
|
||||
.name = "omap-mailbox",
|
||||
.pm = &omap_mbox_pm_ops,
|
||||
.of_match_table = of_match_ptr(omap_mailbox_of_match),
|
||||
},
|
||||
};
|
||||
|
|
|
|||
|
|
@ -21,8 +21,6 @@ struct mbox_client;
|
|||
struct mbox_chan *omap_mbox_request_channel(struct mbox_client *cl,
|
||||
const char *chan_name);
|
||||
|
||||
void omap_mbox_save_ctx(struct mbox_chan *chan);
|
||||
void omap_mbox_restore_ctx(struct mbox_chan *chan);
|
||||
void omap_mbox_enable_irq(struct mbox_chan *chan, omap_mbox_irq_t irq);
|
||||
void omap_mbox_disable_irq(struct mbox_chan *chan, omap_mbox_irq_t irq);
|
||||
|
||||
|
|
|
|||
|
|
@ -1,58 +0,0 @@
|
|||
/*
|
||||
* mailbox-omap.h
|
||||
*
|
||||
* Copyright (C) 2013 Texas Instruments, Inc.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU General Public License
|
||||
* version 2 as published by the Free Software Foundation.
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#ifndef _PLAT_MAILBOX_H
|
||||
#define _PLAT_MAILBOX_H
|
||||
|
||||
/* Interrupt register configuration types */
|
||||
#define MBOX_INTR_CFG_TYPE1 (0)
|
||||
#define MBOX_INTR_CFG_TYPE2 (1)
|
||||
|
||||
/**
|
||||
* struct omap_mbox_dev_info - OMAP mailbox device attribute info
|
||||
* @name: name of the mailbox device
|
||||
* @tx_id: mailbox queue id used for transmitting messages
|
||||
* @rx_id: mailbox queue id on which messages are received
|
||||
* @irq_id: irq identifier number to use from the hwmod data
|
||||
* @usr_id: mailbox user id for identifying the interrupt into
|
||||
* the MPU interrupt controller.
|
||||
*/
|
||||
struct omap_mbox_dev_info {
|
||||
const char *name;
|
||||
u32 tx_id;
|
||||
u32 rx_id;
|
||||
u32 irq_id;
|
||||
u32 usr_id;
|
||||
};
|
||||
|
||||
/**
|
||||
* struct omap_mbox_pdata - OMAP mailbox platform data
|
||||
* @intr_type: type of interrupt configuration registers used
|
||||
while programming mailbox queue interrupts
|
||||
* @num_users: number of users (processor devices) that the mailbox
|
||||
* h/w block can interrupt
|
||||
* @num_fifos: number of h/w fifos within the mailbox h/w block
|
||||
* @info_cnt: number of mailbox devices for the platform
|
||||
* @info: array of mailbox device attributes
|
||||
*/
|
||||
struct omap_mbox_pdata {
|
||||
u32 intr_type;
|
||||
u32 num_users;
|
||||
u32 num_fifos;
|
||||
u32 info_cnt;
|
||||
struct omap_mbox_dev_info *info;
|
||||
};
|
||||
|
||||
#endif /* _PLAT_MAILBOX_H */
|
||||
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