diff options
Diffstat (limited to 'drivers/i2c/busses/i2c-img-scb.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-img-scb.c | 53 |
1 files changed, 17 insertions, 36 deletions
diff --git a/drivers/i2c/busses/i2c-img-scb.c b/drivers/i2c/busses/i2c-img-scb.c index f038858b6c54..88192c25c44c 100644 --- a/drivers/i2c/busses/i2c-img-scb.c +++ b/drivers/i2c/busses/i2c-img-scb.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * I2C adapter for the IMG Serial Control Bus (SCB) IP block. * * Copyright (C) 2009, 2010, 2012, 2014 Imagination Technologies Ltd. * - * 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. - * * There are three ways that this I2C controller can be driven: * * - Raw control of the SDA and SCK signals. @@ -260,7 +257,7 @@ #define IMG_I2C_TIMEOUT (msecs_to_jiffies(1000)) /* - * Worst incs are 1 (innacurate) and 16*256 (irregular). + * Worst incs are 1 (inaccurate) and 16*256 (irregular). * So a sensible inc is the logarithmic mean: 64 (2^6), which is * in the middle of the valid range (0-127). */ @@ -307,7 +304,7 @@ static struct img_i2c_timings timings[] = { /* Standard mode */ { .name = "standard", - .max_bitrate = 100000, + .max_bitrate = I2C_MAX_STANDARD_MODE_FREQ, .tckh = 4000, .tckl = 4700, .tsdh = 4700, @@ -319,7 +316,7 @@ static struct img_i2c_timings timings[] = { /* Fast mode */ { .name = "fast", - .max_bitrate = 400000, + .max_bitrate = I2C_MAX_FAST_MODE_FREQ, .tckh = 600, .tckl = 1300, .tsdh = 600, @@ -834,7 +831,7 @@ next_atomic_cmd: */ static void img_i2c_check_timer(struct timer_list *t) { - struct img_i2c *i2c = from_timer(i2c, t, check_timer); + struct img_i2c *i2c = timer_container_of(i2c, t, check_timer); unsigned long flags; unsigned int line_status; @@ -916,7 +913,7 @@ static unsigned int img_i2c_auto(struct img_i2c *i2c, static irqreturn_t img_i2c_isr(int irq, void *dev_id) { - struct img_i2c *i2c = (struct img_i2c *)dev_id; + struct img_i2c *i2c = dev_id; u32 int_status, line_status; /* We handle transaction completion AFTER accessing registers */ unsigned int hret; @@ -1060,7 +1057,7 @@ static int img_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, atomic = true; } - ret = pm_runtime_get_sync(adap->dev.parent); + ret = pm_runtime_resume_and_get(adap->dev.parent); if (ret < 0) return ret; @@ -1125,19 +1122,15 @@ static int img_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, time_left = wait_for_completion_timeout(&i2c->msg_complete, IMG_I2C_TIMEOUT); - del_timer_sync(&i2c->check_timer); + timer_delete_sync(&i2c->check_timer); - if (time_left == 0) { - dev_err(adap->dev.parent, "i2c transfer timed out\n"); + if (time_left == 0) i2c->msg_status = -ETIMEDOUT; - break; - } if (i2c->msg_status) break; } - pm_runtime_mark_last_busy(adap->dev.parent); pm_runtime_put_autosuspend(adap->dev.parent); return i2c->msg_status ? i2c->msg_status : num; @@ -1149,7 +1142,7 @@ static u32 img_i2c_func(struct i2c_adapter *adap) } static const struct i2c_algorithm img_i2c_algo = { - .master_xfer = img_i2c_xfer, + .xfer = img_i2c_xfer, .functionality = img_i2c_func, }; @@ -1161,7 +1154,7 @@ static int img_i2c_init(struct img_i2c *i2c) u32 rev; int ret; - ret = pm_runtime_get_sync(i2c->adap.dev.parent); + ret = pm_runtime_resume_and_get(i2c->adap.dev.parent); if (ret < 0) return ret; @@ -1171,7 +1164,6 @@ static int img_i2c_init(struct img_i2c *i2c) "Unknown hardware revision (%d.%d.%d.%d)\n", (rev >> 24) & 0xff, (rev >> 16) & 0xff, (rev >> 8) & 0xff, rev & 0xff); - pm_runtime_mark_last_busy(i2c->adap.dev.parent); pm_runtime_put_autosuspend(i2c->adap.dev.parent); return -EINVAL; } @@ -1323,7 +1315,6 @@ static int img_i2c_init(struct img_i2c *i2c) /* Perform a synchronous sequence to reset the bus */ ret = img_i2c_reset_bus(i2c); - pm_runtime_mark_last_busy(i2c->adap.dev.parent); pm_runtime_put_autosuspend(i2c->adap.dev.parent); return ret; @@ -1333,7 +1324,6 @@ static int img_i2c_probe(struct platform_device *pdev) { struct device_node *node = pdev->dev.of_node; struct img_i2c *i2c; - struct resource *res; int irq, ret; u32 val; @@ -1341,16 +1331,13 @@ static int img_i2c_probe(struct platform_device *pdev) if (!i2c) return -ENOMEM; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - i2c->base = devm_ioremap_resource(&pdev->dev, res); + i2c->base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(i2c->base)) return PTR_ERR(i2c->base); irq = platform_get_irq(pdev, 0); - if (irq < 0) { - dev_err(&pdev->dev, "can't get irq number\n"); + if (irq < 0) return irq; - } i2c->sys_clk = devm_clk_get(&pdev->dev, "sys"); if (IS_ERR(i2c->sys_clk)) { @@ -1420,7 +1407,7 @@ rpm_disable: return ret; } -static int img_i2c_remove(struct platform_device *dev) +static void img_i2c_remove(struct platform_device *dev) { struct img_i2c *i2c = platform_get_drvdata(dev); @@ -1428,8 +1415,6 @@ static int img_i2c_remove(struct platform_device *dev) pm_runtime_disable(&dev->dev); if (!pm_runtime_status_suspended(&dev->dev)) img_i2c_runtime_suspend(&dev->dev); - - return 0; } static int img_i2c_runtime_suspend(struct device *dev) @@ -1463,7 +1448,6 @@ static int img_i2c_runtime_resume(struct device *dev) return 0; } -#ifdef CONFIG_PM_SLEEP static int img_i2c_suspend(struct device *dev) { struct img_i2c *i2c = dev_get_drvdata(dev); @@ -1491,13 +1475,10 @@ static int img_i2c_resume(struct device *dev) return 0; } -#endif /* CONFIG_PM_SLEEP */ static const struct dev_pm_ops img_i2c_pm = { - SET_RUNTIME_PM_OPS(img_i2c_runtime_suspend, - img_i2c_runtime_resume, - NULL) - SET_SYSTEM_SLEEP_PM_OPS(img_i2c_suspend, img_i2c_resume) + RUNTIME_PM_OPS(img_i2c_runtime_suspend, img_i2c_runtime_resume, NULL) + SYSTEM_SLEEP_PM_OPS(img_i2c_suspend, img_i2c_resume) }; static const struct of_device_id img_scb_i2c_match[] = { @@ -1510,7 +1491,7 @@ static struct platform_driver img_scb_i2c_driver = { .driver = { .name = "img-i2c-scb", .of_match_table = img_scb_i2c_match, - .pm = &img_i2c_pm, + .pm = pm_ptr(&img_i2c_pm), }, .probe = img_i2c_probe, .remove = img_i2c_remove, |