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(UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E0617C433EF; Thu, 25 May 2023 11:00:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1685012431; bh=oJ6QgPbGXWqRoqlX01O23tO6hItbrjZO+12l/zxII90=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=q+2qRjDKb+rSiGR3JP9GLEgCuUic1R3fHUdw1ErP/R+PcPkw1BFOyuIe6pyFnh/p2 P79a5BXsNGnn4BoYpKbmmv+uVomwIaKbx1B/ds4oolpFWgHHvNClzloWoZ7GTH6uQr p/gA8KRJEP2g3pICPKA38Y+NwSSCVvLfQzFBGgQrEm1wojL2MGrJQ2T+m7PdgAcXSr ie81kGfM/a+N6LQw/r3DNaR7bZ7cEQds8+UMTRUSOJPcHcsbARIlnpS1q1ysWE7WqF uUTH8S5I5kBFo+on3XK6HNqOHkZMeS1fQTAgc4rUHgaPMeNpc7c99xmU39nXPG4lV1 tOBH9NN9be7Ig== Date: Thu, 25 May 2023 12:00:26 +0100 From: Lee Jones To: Milo Spadacini Cc: heiko@sntech.de, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] driver: mfd: admit rk805 driver registration without interrupt support Message-ID: <20230525110026.GG9691@google.com> References: <20230525070011.23761-1-milo.spadacini@gmail.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20230525070011.23761-1-milo.spadacini@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230525_040032_466311_A3A1E264 X-CRM114-Status: GOOD ( 25.76 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org RG8geW91IG1lYW4gIk9taXQiPwoKT24gVGh1LCAyNSBNYXkgMjAyMywgTWlsbyBTcGFkYWNpbmkg d3JvdGU6Cgo+IHJrODA1IHVzZSBpbnRlcnJ1cHQgb25seSBmb3IgInJrODA4LXJ0YyIgYW5kICJy azgwNS1wd3JrZXkiIGRyaXZlcnMuCgpSSzgwNSBvbmx5IHVzZXMgaW50ZXJydXB0cyBmb3IgLi4u 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vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 22976C7EE2C for ; Thu, 25 May 2023 11:01:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240852AbjEYLA7 (ORCPT ); Thu, 25 May 2023 07:00:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39962 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240334AbjEYLAd (ORCPT ); Thu, 25 May 2023 07:00:33 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4C0A7C5 for ; Thu, 25 May 2023 04:00:32 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id D09EC61382 for ; Thu, 25 May 2023 11:00:31 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E0617C433EF; Thu, 25 May 2023 11:00:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1685012431; bh=oJ6QgPbGXWqRoqlX01O23tO6hItbrjZO+12l/zxII90=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=q+2qRjDKb+rSiGR3JP9GLEgCuUic1R3fHUdw1ErP/R+PcPkw1BFOyuIe6pyFnh/p2 P79a5BXsNGnn4BoYpKbmmv+uVomwIaKbx1B/ds4oolpFWgHHvNClzloWoZ7GTH6uQr p/gA8KRJEP2g3pICPKA38Y+NwSSCVvLfQzFBGgQrEm1wojL2MGrJQ2T+m7PdgAcXSr ie81kGfM/a+N6LQw/r3DNaR7bZ7cEQds8+UMTRUSOJPcHcsbARIlnpS1q1ysWE7WqF uUTH8S5I5kBFo+on3XK6HNqOHkZMeS1fQTAgc4rUHgaPMeNpc7c99xmU39nXPG4lV1 tOBH9NN9be7Ig== Date: Thu, 25 May 2023 12:00:26 +0100 From: Lee Jones To: Milo Spadacini Cc: heiko@sntech.de, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] driver: mfd: admit rk805 driver registration without interrupt support Message-ID: <20230525110026.GG9691@google.com> References: <20230525070011.23761-1-milo.spadacini@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20230525070011.23761-1-milo.spadacini@gmail.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Do you mean "Omit"? On Thu, 25 May 2023, Milo Spadacini wrote: > rk805 use interrupt only for "rk808-rtc" and "rk805-pwrkey" drivers. RK805 only uses interrupts for ... > On custom board these drivers could be not used and the irq gpio "boards" "IRQ GPIQs" > could be not connected. "are not connected" > Force the usage of a not used gpio, that could be floating, could cause > spurious interrupt. Please rephrase this. I can't quite make it out to make suggestions. > Signed-off-by: Milo Spadacini > --- > drivers/mfd/rk808.c | 39 +++++++++++++++++++++++++++------------ > 1 file changed, 27 insertions(+), 12 deletions(-) > > diff --git a/drivers/mfd/rk808.c b/drivers/mfd/rk808.c > index e00da7c7e3b1..ae33be90b312 100644 > --- a/drivers/mfd/rk808.c > +++ b/drivers/mfd/rk808.c > @@ -643,6 +643,7 @@ MODULE_DEVICE_TABLE(of, rk808_of_match); > static int rk808_probe(struct i2c_client *client, > const struct i2c_device_id *id) > { > + struct irq_domain * rk808_irq_domain = NULL; Drop the ' ' after the '*'. > struct device_node *np = client->dev.of_node; > struct rk808 *rk808; > const struct rk808_reg_data *pre_init_reg; > @@ -692,7 +693,11 @@ static int rk808_probe(struct i2c_client *client, > pre_init_reg = rk805_pre_init_reg; > nr_pre_init_regs = ARRAY_SIZE(rk805_pre_init_reg); > cells = rk805s; > - nr_cells = ARRAY_SIZE(rk805s); > + if (client->irq) > + nr_cells = ARRAY_SIZE(rk805s); > + else > + nr_cells = ARRAY_SIZE(rk805s) - 2; What's 2? Please define it. Does this rely on the ordering of rk805s? Seems fragile. > + > break; > case RK808_ID: > rk808->regmap_cfg = &rk808_regmap_config; > @@ -734,19 +739,28 @@ static int rk808_probe(struct i2c_client *client, > return PTR_ERR(rk808->regmap); > } > > - if (!client->irq) { > + if (client->irq) { > + > + ret = regmap_add_irq_chip(rk808->regmap, client->irq, > + IRQF_ONESHOT, -1, > + rk808->regmap_irq_chip, &rk808->irq_data); > + if (ret) { > + dev_err(&client->dev, "Failed to add irq_chip %d\n", ret); > + return ret; > + } > + > + rk808_irq_domain = regmap_irq_get_domain(rk808->irq_data); > + } > + else if (rk808->variant == RK805_ID) else goes on the line above. > + { > + dev_warn(&client->dev, "Skip interrupt support, no core IRQ\n"); > + } > + else > + { > dev_err(&client->dev, "No interrupt support, no core IRQ\n"); > return -EINVAL; > } > > - ret = regmap_add_irq_chip(rk808->regmap, client->irq, > - IRQF_ONESHOT, -1, > - rk808->regmap_irq_chip, &rk808->irq_data); > - if (ret) { > - dev_err(&client->dev, "Failed to add irq_chip %d\n", ret); > - return ret; > - } > - > for (i = 0; i < nr_pre_init_regs; i++) { > ret = regmap_update_bits(rk808->regmap, > pre_init_reg[i].addr, > @@ -762,7 +776,7 @@ static int rk808_probe(struct i2c_client *client, > > ret = devm_mfd_add_devices(&client->dev, PLATFORM_DEVID_NONE, > cells, nr_cells, NULL, 0, > - regmap_irq_get_domain(rk808->irq_data)); > + rk808_irq_domain); > if (ret) { > dev_err(&client->dev, "failed to add MFD devices %d\n", ret); > goto err_irq; > @@ -796,7 +810,8 @@ static void rk808_remove(struct i2c_client *client) > { > struct rk808 *rk808 = i2c_get_clientdata(client); > > - regmap_del_irq_chip(client->irq, rk808->irq_data); > + if (client->irq) > + regmap_del_irq_chip(client->irq, rk808->irq_data); > > /** > * pm_power_off may points to a function from another module. > -- > 2.34.1 > -- Lee Jones [李琼斯]