From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752712AbcFTDvU (ORCPT ); Sun, 19 Jun 2016 23:51:20 -0400 Received: from mail-pf0-f172.google.com ([209.85.192.172]:33547 "EHLO mail-pf0-f172.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752572AbcFTDun (ORCPT ); Sun, 19 Jun 2016 23:50:43 -0400 From: Xinliang Liu To: p.zabel@pengutronix.de Cc: linux-kernel@vger.kernel.org, robh+dt@kernel.org, xuwei5@hisilicon.com, puck.chen@hisilicon.com, saberlily.xia@hisilicon.com, kong.kongxinwei@hisilicon.com, guodong.xu@linaro.org, Xinliang Liu Subject: [PATCH v3 4/4] reset: hisilicon: Add hi6220 media subsystem reset support Date: Mon, 20 Jun 2016 11:50:07 +0800 Message-Id: <20160620035007.229629-5-xinliang.liu@linaro.org> X-Mailer: git-send-email 2.8.3 In-Reply-To: <20160620035007.229629-1-xinliang.liu@linaro.org> References: <20160620035007.229629-1-xinliang.liu@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add hi6220 media subsystem reset controller. Signed-off-by: Chen Feng Signed-off-by: Xia Qing Signed-off-by: Xinliang Liu --- drivers/reset/hisilicon/hi6220_reset.c | 49 ++++++++++++++++++++++++++++++++-- 1 file changed, 47 insertions(+), 2 deletions(-) diff --git a/drivers/reset/hisilicon/hi6220_reset.c b/drivers/reset/hisilicon/hi6220_reset.c index 686fea9e2c54..35ce53edabf9 100644 --- a/drivers/reset/hisilicon/hi6220_reset.c +++ b/drivers/reset/hisilicon/hi6220_reset.c @@ -27,8 +27,17 @@ #define PERIPH_DEASSERT_OFFSET 0x304 #define PERIPH_MAX_INDEX 0x509 +#define SC_MEDIA_RSTEN 0x052C +#define SC_MEDIA_RSTDIS 0x0530 +#define MEDIA_MAX_INDEX 8 + #define to_reset_data(x) container_of(x, struct hi6220_reset_data, rc_dev) +enum hi6220_reset_ctrl_type { + PERIPHERAL, + MEDIA, +}; + struct hi6220_reset_data { struct reset_controller_dev rc_dev; struct regmap *regmap; @@ -63,10 +72,34 @@ static const struct reset_control_ops hi6220_peripheral_reset_ops = { .deassert = hi6220_peripheral_deassert, }; +static int hi6220_media_assert(struct reset_controller_dev *rc_dev, + unsigned long idx) +{ + struct hi6220_reset_data *data = to_reset_data(rc_dev); + struct regmap *regmap = data->regmap; + + return regmap_write(regmap, SC_MEDIA_RSTEN, BIT(idx)); +} + +static int hi6220_media_deassert(struct reset_controller_dev *rc_dev, + unsigned long idx) +{ + struct hi6220_reset_data *data = to_reset_data(rc_dev); + struct regmap *regmap = data->regmap; + + return regmap_write(regmap, SC_MEDIA_RSTDIS, BIT(idx)); +} + +static const struct reset_control_ops hi6220_media_reset_ops = { + .assert = hi6220_media_assert, + .deassert = hi6220_media_deassert, +}; + static int hi6220_reset_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; struct device *dev = &pdev->dev; + enum hi6220_reset_ctrl_type type; struct hi6220_reset_data *data; struct regmap *regmap; @@ -74,6 +107,8 @@ static int hi6220_reset_probe(struct platform_device *pdev) if (!data) return -ENOMEM; + type = (enum hi6220_reset_ctrl_type)of_device_get_match_data(dev); + regmap = syscon_node_to_regmap(np); if (IS_ERR(regmap)) { dev_err(dev, "failed to get reset controller regmap\n"); @@ -82,8 +117,13 @@ static int hi6220_reset_probe(struct platform_device *pdev) data->regmap = regmap; data->rc_dev.of_node = np; - data->rc_dev.ops = &hi6220_peripheral_reset_ops; - data->rc_dev.nr_resets = PERIPH_MAX_INDEX; + if (type == MEDIA) { + data->rc_dev.ops = &hi6220_media_reset_ops; + data->rc_dev.nr_resets = MEDIA_MAX_INDEX; + } else { + data->rc_dev.ops = &hi6220_peripheral_reset_ops; + data->rc_dev.nr_resets = PERIPH_MAX_INDEX; + } return reset_controller_register(&data->rc_dev); } @@ -91,6 +131,11 @@ static int hi6220_reset_probe(struct platform_device *pdev) static const struct of_device_id hi6220_reset_match[] = { { .compatible = "hisilicon,hi6220-sysctrl", + .data = (void *)PERIPHERAL, + }, + { + .compatible = "hisilicon,hi6220-mediactrl", + .data = (void *)MEDIA, }, { /* sentinel */ }, }; -- 2.8.3