diff options
Diffstat (limited to 'drivers/mfd/atmel-hlcdc.c')
| -rw-r--r-- | drivers/mfd/atmel-hlcdc.c | 37 |
1 files changed, 18 insertions, 19 deletions
diff --git a/drivers/mfd/atmel-hlcdc.c b/drivers/mfd/atmel-hlcdc.c index e82543bcfdc8..4c4e35d404f3 100644 --- a/drivers/mfd/atmel-hlcdc.c +++ b/drivers/mfd/atmel-hlcdc.c @@ -1,20 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2014 Free Electrons * Copyright (C) 2014 Atmel * * Author: Boris BREZILLON <boris.brezillon@free-electrons.com> - * - * 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. - * - * You should have received a copy of the GNU General Public License along with - * this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/clk.h> @@ -30,6 +19,7 @@ struct atmel_hlcdc_regmap { void __iomem *regs; + struct device *dev; }; static const struct mfd_cell atmel_hlcdc_cells[] = { @@ -50,10 +40,17 @@ static int regmap_atmel_hlcdc_reg_write(void *context, unsigned int reg, if (reg <= ATMEL_HLCDC_DIS) { u32 status; - - readl_poll_timeout_atomic(hregmap->regs + ATMEL_HLCDC_SR, - status, !(status & ATMEL_HLCDC_SIP), - 1, 100); + int ret; + + ret = readl_poll_timeout_atomic(hregmap->regs + ATMEL_HLCDC_SR, + status, + !(status & ATMEL_HLCDC_SIP), + 1, 100); + if (ret) { + dev_err(hregmap->dev, + "Timeout! Clock domain synchronization is in progress!\n"); + return ret; + } } writel(val, hregmap->regs + reg); @@ -86,7 +83,6 @@ static int atmel_hlcdc_probe(struct platform_device *pdev) struct atmel_hlcdc_regmap *hregmap; struct device *dev = &pdev->dev; struct atmel_hlcdc *hlcdc; - struct resource *res; hregmap = devm_kzalloc(dev, sizeof(*hregmap), GFP_KERNEL); if (!hregmap) @@ -96,11 +92,12 @@ static int atmel_hlcdc_probe(struct platform_device *pdev) if (!hlcdc) return -ENOMEM; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - hregmap->regs = devm_ioremap_resource(dev, res); + hregmap->regs = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(hregmap->regs)) return PTR_ERR(hregmap->regs); + hregmap->dev = &pdev->dev; + hlcdc->irq = platform_get_irq(pdev, 0); if (hlcdc->irq < 0) return hlcdc->irq; @@ -141,6 +138,8 @@ static const struct of_device_id atmel_hlcdc_match[] = { { .compatible = "atmel,sama5d2-hlcdc" }, { .compatible = "atmel,sama5d3-hlcdc" }, { .compatible = "atmel,sama5d4-hlcdc" }, + { .compatible = "microchip,sam9x60-hlcdc" }, + { .compatible = "microchip,sam9x75-xlcdc" }, { /* sentinel */ }, }; MODULE_DEVICE_TABLE(of, atmel_hlcdc_match); |