From patchwork Wed Mar 24 19:28:53 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guru Das Srinagesh X-Patchwork-Id: 12162191 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4F307C433E1 for ; Wed, 24 Mar 2021 19:29:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 076FD61A1D for ; Wed, 24 Mar 2021 19:29:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237836AbhCXT3W (ORCPT ); Wed, 24 Mar 2021 15:29:22 -0400 Received: from alexa-out-sd-02.qualcomm.com ([199.106.114.39]:55796 "EHLO alexa-out-sd-02.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237667AbhCXT25 (ORCPT ); Wed, 24 Mar 2021 15:28:57 -0400 Received: from unknown (HELO ironmsg01-sd.qualcomm.com) ([10.53.140.141]) by alexa-out-sd-02.qualcomm.com with ESMTP; 24 Mar 2021 12:28:56 -0700 X-QCInternal: smtphost Received: from gurus-linux.qualcomm.com (HELO gurus-linux.localdomain) ([10.46.162.81]) by ironmsg01-sd.qualcomm.com with ESMTP; 24 Mar 2021 12:28:55 -0700 Received: by gurus-linux.localdomain (Postfix, from userid 383780) id D2B7E1962; Wed, 24 Mar 2021 12:28:55 -0700 (PDT) From: Guru Das Srinagesh To: Mark Brown , Markus Elfring , Lee Jones , Rob Herring Cc: Bjorn Andersson , Greg KH , Guenter Roeck , Joe Perches , Subbaraman Narayanamurthy , David Collins , Anirudh Ghayal , linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Guru Das Srinagesh Subject: [PATCH v5 1/2] regmap-irq: Introduce virtual regs to handle more config regs Date: Wed, 24 Mar 2021 12:28:53 -0700 Message-Id: X-Mailer: git-send-email 2.7.4 In-Reply-To: References: In-Reply-To: References: Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add "virtual" registers support to handle any irq configuration registers in addition to the ones the framework currently supports (status, mask, unmask, wake, type and ack). These are non-standard registers that further configure irq type on some devices, so enable the framework to add a variable number of them. Signed-off-by: Guru Das Srinagesh --- drivers/base/regmap/regmap-irq.c | 38 +++++++++++++++++++++++++++++++++++++- include/linux/regmap.h | 5 +++++ 2 files changed, 42 insertions(+), 1 deletion(-) diff --git a/drivers/base/regmap/regmap-irq.c b/drivers/base/regmap/regmap-irq.c index e1d8fc9e..d1ade76 100644 --- a/drivers/base/regmap/regmap-irq.c +++ b/drivers/base/regmap/regmap-irq.c @@ -38,6 +38,7 @@ struct regmap_irq_chip_data { unsigned int *wake_buf; unsigned int *type_buf; unsigned int *type_buf_def; + unsigned int **virt_buf; unsigned int irq_reg_stride; unsigned int type_reg_stride; @@ -94,7 +95,7 @@ static void regmap_irq_sync_unlock(struct irq_data *data) { struct regmap_irq_chip_data *d = irq_data_get_irq_chip_data(data); struct regmap *map = d->map; - int i, ret; + int i, j, ret; u32 reg; u32 unmask_offset; u32 val; @@ -218,6 +219,20 @@ static void regmap_irq_sync_unlock(struct irq_data *data) } } + if (d->chip->num_virt_regs) { + for (i = 0; i < d->chip->num_virt_regs; i++) { + for (j = 0; j < d->chip->num_regs; j++) { + reg = sub_irq_reg(d, d->chip->virt_reg_base[i], + j); + ret = regmap_write(map, reg, d->virt_buf[i][j]); + if (ret != 0) + dev_err(d->map->dev, + "Failed to write virt 0x%x: %d\n", + reg, ret); + } + } + } + if (d->chip->runtime_pm) pm_runtime_put(map->dev); @@ -691,6 +706,24 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode, goto err_alloc; } + if (chip->num_virt_regs) { + /* + * Create virt_buf[chip->num_extra_config_regs][chip->num_regs] + */ + d->virt_buf = kcalloc(chip->num_virt_regs, sizeof(*d->virt_buf), + GFP_KERNEL); + if (!d->virt_buf) + goto err_alloc; + + for (i = 0; i < chip->num_virt_regs; i++) { + d->virt_buf[i] = kcalloc(chip->num_regs, + sizeof(unsigned int), + GFP_KERNEL); + if (!d->virt_buf[i]) + goto err_alloc; + } + } + d->irq_chip = regmap_irq_chip; d->irq_chip.name = chip->name; d->irq = irq; @@ -863,6 +896,9 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode, kfree(d->mask_buf); kfree(d->status_buf); kfree(d->status_reg_buf); + for (i = 0; i < chip->num_virt_regs; i++) + kfree(d->virt_buf[i]); + kfree(d->virt_buf); kfree(d); return ret; } diff --git a/include/linux/regmap.h b/include/linux/regmap.h index 18910bd..97ec733 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -1393,6 +1393,7 @@ struct regmap_irq_sub_irq_map { * Using zero value is possible with @use_ack bit. * @wake_base: Base address for wake enables. If zero unsupported. * @type_base: Base address for irq type. If zero unsupported. + * @virt_reg_base: Base addresses for extra config regs. * @irq_reg_stride: Stride to use for chips where registers are not contiguous. * @init_ack_masked: Ack all masked interrupts once during initalization. * @mask_invert: Inverted mask register: cleared bits are masked out. @@ -1417,6 +1418,8 @@ struct regmap_irq_sub_irq_map { * assigned based on the index in the array of the interrupt. * @num_irqs: Number of descriptors. * @num_type_reg: Number of type registers. + * @num_virt_regs: Number of non-standard irq configuration registers. + * If zero unsupported. * @type_reg_stride: Stride to use for chips where type registers are not * contiguous. * @handle_pre_irq: Driver specific callback to handle interrupt from device @@ -1444,6 +1447,7 @@ struct regmap_irq_chip { unsigned int ack_base; unsigned int wake_base; unsigned int type_base; + unsigned int *virt_reg_base; unsigned int irq_reg_stride; bool mask_writeonly:1; bool init_ack_masked:1; @@ -1464,6 +1468,7 @@ struct regmap_irq_chip { int num_irqs; int num_type_reg; + int num_virt_regs; unsigned int type_reg_stride; int (*handle_pre_irq)(void *irq_drv_data); From patchwork Wed Mar 24 19:28:54 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guru Das Srinagesh X-Patchwork-Id: 12162193 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C4736C433E6 for ; Wed, 24 Mar 2021 19:29:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A878561A17 for ; Wed, 24 Mar 2021 19:29:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237879AbhCXT3X (ORCPT ); Wed, 24 Mar 2021 15:29:23 -0400 Received: from alexa-out-sd-02.qualcomm.com ([199.106.114.39]:55796 "EHLO alexa-out-sd-02.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237639AbhCXT24 (ORCPT ); Wed, 24 Mar 2021 15:28:56 -0400 Received: from unknown (HELO ironmsg-SD-alpha.qualcomm.com) ([10.53.140.30]) by alexa-out-sd-02.qualcomm.com with ESMTP; 24 Mar 2021 12:28:56 -0700 X-QCInternal: smtphost Received: from gurus-linux.qualcomm.com (HELO gurus-linux.localdomain) ([10.46.162.81]) by ironmsg-SD-alpha.qualcomm.com with ESMTP; 24 Mar 2021 12:28:55 -0700 Received: by gurus-linux.localdomain (Postfix, from userid 383780) id EB4081A0C; Wed, 24 Mar 2021 12:28:55 -0700 (PDT) From: Guru Das Srinagesh To: Mark Brown , Markus Elfring , Lee Jones , Rob Herring Cc: Bjorn Andersson , Greg KH , Guenter Roeck , Joe Perches , Subbaraman Narayanamurthy , David Collins , Anirudh Ghayal , linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Guru Das Srinagesh Subject: [PATCH v5 2/2] regmap-irq: Add driver callback to configure virtual regs Date: Wed, 24 Mar 2021 12:28:54 -0700 Message-Id: <07e058cdec2297d15c95c825aa0263064d962d5a.1616613838.git.gurus@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: References: In-Reply-To: References: Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Enable drivers to configure and modify "virtual" registers, which are non-standard registers that further configure irq type on some devices. Since they are non-standard, enable drivers to configure them according to their particular idiosyncrasies by specifying an optional callback function while registering with the framework. Signed-off-by: Guru Das Srinagesh --- drivers/base/regmap/regmap-irq.c | 5 +++++ include/linux/regmap.h | 4 ++++ 2 files changed, 9 insertions(+) diff --git a/drivers/base/regmap/regmap-irq.c b/drivers/base/regmap/regmap-irq.c index d1ade76..e6343ccc 100644 --- a/drivers/base/regmap/regmap-irq.c +++ b/drivers/base/regmap/regmap-irq.c @@ -333,6 +333,11 @@ static int regmap_irq_set_type(struct irq_data *data, unsigned int type) default: return -EINVAL; } + + if (d->chip->set_type_virt) + return d->chip->set_type_virt(d->virt_buf, type, data->hwirq, + reg); + return 0; } diff --git a/include/linux/regmap.h b/include/linux/regmap.h index 97ec733..f87a11a 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -1426,6 +1426,8 @@ struct regmap_irq_sub_irq_map { * before regmap_irq_handler process the interrupts. * @handle_post_irq: Driver specific callback to handle interrupt from device * after handling the interrupts in regmap_irq_handler(). + * @set_type_virt: Driver specific callback to extend regmap_irq_set_type() + * and configure virt regs. * @irq_drv_data: Driver specific IRQ data which is passed as parameter when * driver specific pre/post interrupt handler is called. * @@ -1473,6 +1475,8 @@ struct regmap_irq_chip { int (*handle_pre_irq)(void *irq_drv_data); int (*handle_post_irq)(void *irq_drv_data); + int (*set_type_virt)(unsigned int **buf, unsigned int type, + unsigned long hwirq, int reg); void *irq_drv_data; };