clocksource: sh_cmt: Add index to struct sh_cmt_channel

Use the index when printing messages to identify the channel.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
(cherry picked from commit 740a95184dd61eb0481f75ced05ea5e01b7ce6ac)
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

diff --git a/drivers/clocksource/sh_cmt.c b/drivers/clocksource/sh_cmt.c
index 4fcb05d..6b65621 100644 (file)
--- a/drivers/clocksource/sh_cmt.c
+++ b/drivers/clocksource/sh_cmt.c
@@ -39,6 +39,7 @@ struct sh_cmt_device;
 
 struct sh_cmt_channel {
        struct sh_cmt_device *cmt;
+       unsigned int index;
 
        void __iomem *base;
 
@@ -216,7 +217,8 @@ static int sh_cmt_enable(struct sh_cmt_channel *ch, unsigned long *rate)
        /* enable clock */
        ret = clk_enable(ch->cmt->clk);
        if (ret) {
-               dev_err(&ch->cmt->pdev->dev, "cannot enable clock\n");
+               dev_err(&ch->cmt->pdev->dev, "ch%u: cannot enable clock\n",
+                       ch->index);
                goto err0;
        }
 
@@ -253,7 +255,8 @@ static int sh_cmt_enable(struct sh_cmt_channel *ch, unsigned long *rate)
        }
 
        if (sh_cmt_read_cmcnt(ch)) {
-               dev_err(&ch->cmt->pdev->dev, "cannot clear CMCNT\n");
+               dev_err(&ch->cmt->pdev->dev, "ch%u: cannot clear CMCNT\n",
+                       ch->index);
                ret = -ETIMEDOUT;
                goto err1;
        }
@@ -371,7 +374,8 @@ static void sh_cmt_clock_event_program_verify(struct sh_cmt_channel *ch,
                        delay = 1;
 
                if (!delay)
-                       dev_warn(&ch->cmt->pdev->dev, "too long delay\n");
+                       dev_warn(&ch->cmt->pdev->dev, "ch%u: too long delay\n",
+                                ch->index);
 
        } while (delay);
 }
@@ -379,7 +383,8 @@ static void sh_cmt_clock_event_program_verify(struct sh_cmt_channel *ch,
 static void __sh_cmt_set_next(struct sh_cmt_channel *ch, unsigned long delta)
 {
        if (delta > ch->max_match_value)
-               dev_warn(&ch->cmt->pdev->dev, "delta out of range\n");
+               dev_warn(&ch->cmt->pdev->dev, "ch%u: delta out of range\n",
+                        ch->index);
 
        ch->next_match_value = delta;
        sh_cmt_clock_event_program_verify(ch, 0);
@@ -565,7 +570,8 @@ static int sh_cmt_register_clocksource(struct sh_cmt_channel *ch,
        cs->mask = CLOCKSOURCE_MASK(sizeof(unsigned long) * 8);
        cs->flags = CLOCK_SOURCE_IS_CONTINUOUS;
 
-       dev_info(&ch->cmt->pdev->dev, "used as clock source\n");
+       dev_info(&ch->cmt->pdev->dev, "ch%u: used as clock source\n",
+                ch->index);
 
        /* Register with dummy 1 Hz value, gets updated in ->enable() */
        clocksource_register_hz(cs, 1);
@@ -614,12 +620,12 @@ static void sh_cmt_clock_event_mode(enum clock_event_mode mode,
        switch (mode) {
        case CLOCK_EVT_MODE_PERIODIC:
                dev_info(&ch->cmt->pdev->dev,
-                        "used for periodic clock events\n");
+                        "ch%u: used for periodic clock events\n", ch->index);
                sh_cmt_clock_event_start(ch, 1);
                break;
        case CLOCK_EVT_MODE_ONESHOT:
                dev_info(&ch->cmt->pdev->dev,
-                        "used for oneshot clock events\n");
+                        "ch%u: used for oneshot clock events\n", ch->index);
                sh_cmt_clock_event_start(ch, 0);
                break;
        case CLOCK_EVT_MODE_SHUTDOWN:
@@ -678,7 +684,8 @@ static void sh_cmt_register_clockevent(struct sh_cmt_channel *ch,
        ced->suspend = sh_cmt_clock_event_suspend;
        ced->resume = sh_cmt_clock_event_resume;
 
-       dev_info(&ch->cmt->pdev->dev, "used for clock events\n");
+       dev_info(&ch->cmt->pdev->dev, "ch%u: used for clock events\n",
+                ch->index);
        clockevents_register_device(ced);
 }
 
@@ -695,7 +702,7 @@ static int sh_cmt_register(struct sh_cmt_channel *ch, const char *name,
        return 0;
 }
 
-static int sh_cmt_setup_channel(struct sh_cmt_channel *ch,
+static int sh_cmt_setup_channel(struct sh_cmt_channel *ch, unsigned int index,
                                struct sh_cmt_device *cmt)
 {
        struct sh_timer_config *cfg = cmt->pdev->dev.platform_data;
@@ -705,10 +712,12 @@ static int sh_cmt_setup_channel(struct sh_cmt_channel *ch,
        memset(ch, 0, sizeof(*ch));
        ch->cmt = cmt;
        ch->base = cmt->mapbase_ch;
+       ch->index = index;
 
        irq = platform_get_irq(cmt->pdev, 0);
        if (irq < 0) {
-               dev_err(&cmt->pdev->dev, "failed to get irq\n");
+               dev_err(&cmt->pdev->dev, "ch%u: failed to get irq\n",
+                       ch->index);
                return irq;
        }
 
@@ -724,7 +733,8 @@ static int sh_cmt_setup_channel(struct sh_cmt_channel *ch,
                              cfg->clockevent_rating,
                              cfg->clocksource_rating);
        if (ret) {
-               dev_err(&cmt->pdev->dev, "registration failed\n");
+               dev_err(&cmt->pdev->dev, "ch%u: registration failed\n",
+                       ch->index);
                return ret;
        }
        ch->cs_enabled = false;
@@ -733,7 +743,8 @@ static int sh_cmt_setup_channel(struct sh_cmt_channel *ch,
                          IRQF_TIMER | IRQF_IRQPOLL | IRQF_NOBALANCING,
                          dev_name(&cmt->pdev->dev), ch);
        if (ret) {
-               dev_err(&cmt->pdev->dev, "failed to request irq %d\n", irq);
+               dev_err(&cmt->pdev->dev, "ch%u: failed to request irq %d\n",
+                       ch->index, irq);
                return ret;
        }
 
@@ -815,7 +826,7 @@ static int sh_cmt_setup(struct sh_cmt_device *cmt, struct platform_device *pdev)
                cmt->clear_bits = ~0xc000;
        }
 
-       ret = sh_cmt_setup_channel(&cmt->channel, cmt);
+       ret = sh_cmt_setup_channel(&cmt->channel, cfg->timer_bit, cmt);
        if (ret < 0)
                goto err4;