From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from outils.crapouillou.net ([89.234.176.41]:40702 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728544AbeLLWQt (ORCPT ); Wed, 12 Dec 2018 17:16:49 -0500 From: Paul Cercueil To: Thierry Reding , Rob Herring , Mark Rutland , Daniel Lezcano , Thomas Gleixner , Ralf Baechle , Paul Burton , James Hogan , Jonathan Corbet Cc: Mathieu Malaterre , Ezequiel Garcia , PrasannaKumar Muralidharan , linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-mips@vger.kernel.org, linux-doc@vger.kernel.org, linux-clk@vger.kernel.org, od@zcrc.me, Paul Cercueil Subject: [PATCH v8 08/26] watchdog: jz4740: Use regmap provided by TCU driver Date: Wed, 12 Dec 2018 23:09:03 +0100 Message-Id: <20181212220922.18759-9-paul@crapouillou.net> In-Reply-To: <20181212220922.18759-1-paul@crapouillou.net> References: <20181212220922.18759-1-paul@crapouillou.net> Sender: linux-watchdog-owner@vger.kernel.org List-Id: linux-watchdog@vger.kernel.org Since we broke the ABI by changing the clock, the driver was also updated to use the regmap provided by the TCU driver. Signed-off-by: Paul Cercueil Reviewed-by: Guenter Roeck --- Notes: v6: New patch v7: No change v8: No change drivers/watchdog/jz4740_wdt.c | 30 ++++++++++++++---------------- 1 file changed, 14 insertions(+), 16 deletions(-) diff --git a/drivers/watchdog/jz4740_wdt.c b/drivers/watchdog/jz4740_wdt.c index 1d504ecf45e1..0f54306aee25 100644 --- a/drivers/watchdog/jz4740_wdt.c +++ b/drivers/watchdog/jz4740_wdt.c @@ -13,6 +13,7 @@ * */ +#include #include #include #include @@ -25,10 +26,7 @@ #include #include #include - -#define JZ_REG_WDT_TIMER_DATA 0x0 -#define JZ_REG_WDT_COUNTER_ENABLE 0x4 -#define JZ_REG_WDT_TIMER_COUNTER 0x8 +#include #define DEFAULT_HEARTBEAT 5 #define MAX_HEARTBEAT 2048 @@ -48,7 +46,7 @@ MODULE_PARM_DESC(heartbeat, struct jz4740_wdt_drvdata { struct watchdog_device wdt; - void __iomem *base; + struct regmap *map; struct clk *clk; unsigned long clk_rate; }; @@ -57,7 +55,7 @@ static int jz4740_wdt_ping(struct watchdog_device *wdt_dev) { struct jz4740_wdt_drvdata *drvdata = watchdog_get_drvdata(wdt_dev); - writew(0x0, drvdata->base + JZ_REG_WDT_TIMER_COUNTER); + regmap_write(drvdata->map, TCU_REG_WDT_TCNT, 0); return 0; } @@ -67,12 +65,12 @@ static int jz4740_wdt_set_timeout(struct watchdog_device *wdt_dev, struct jz4740_wdt_drvdata *drvdata = watchdog_get_drvdata(wdt_dev); u16 timeout_value = (u16)(drvdata->clk_rate * new_timeout); - writeb(0x0, drvdata->base + JZ_REG_WDT_COUNTER_ENABLE); + regmap_write(drvdata->map, TCU_REG_WDT_TCER, 0); - writew((u16)timeout_value, drvdata->base + JZ_REG_WDT_TIMER_DATA); - writew(0x0, drvdata->base + JZ_REG_WDT_TIMER_COUNTER); + regmap_write(drvdata->map, TCU_REG_WDT_TDR, timeout_value); + regmap_write(drvdata->map, TCU_REG_WDT_TCNT, 0); - writeb(0x1, drvdata->base + JZ_REG_WDT_COUNTER_ENABLE); + regmap_write(drvdata->map, TCU_REG_WDT_TCER, TCU_WDT_TCER_TCEN); wdt_dev->timeout = new_timeout; return 0; @@ -96,7 +94,7 @@ static int jz4740_wdt_stop(struct watchdog_device *wdt_dev) { struct jz4740_wdt_drvdata *drvdata = watchdog_get_drvdata(wdt_dev); - writeb(0x0, drvdata->base + JZ_REG_WDT_COUNTER_ENABLE); + regmap_write(drvdata->map, TCU_REG_WDT_TCER, 0); clk_disable_unprepare(drvdata->clk); return 0; @@ -138,7 +136,6 @@ static int jz4740_wdt_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct jz4740_wdt_drvdata *drvdata; struct watchdog_device *jz4740_wdt; - struct resource *res; long rate; int ret; @@ -174,10 +171,11 @@ static int jz4740_wdt_probe(struct platform_device *pdev) watchdog_set_nowayout(jz4740_wdt, nowayout); watchdog_set_drvdata(jz4740_wdt, drvdata); - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - drvdata->base = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(drvdata->base)) - return PTR_ERR(drvdata->base); + drvdata->map = dev_get_regmap(dev->parent, NULL); + if (!drvdata->map) { + dev_err(dev, "regmap not found\n"); + return -EINVAL; + } ret = devm_watchdog_register_device(&pdev->dev, &drvdata->wdt); if (ret < 0) -- 2.11.0