From patchwork Mon Jan 29 21:12:09 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nick Dyer X-Patchwork-Id: 10190905 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 3080460375 for ; Mon, 29 Jan 2018 21:12:33 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2312622380 for ; Mon, 29 Jan 2018 21:12:33 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 175C8285FD; Mon, 29 Jan 2018 21:12:33 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9555122380 for ; Mon, 29 Jan 2018 21:12:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751910AbeA2VM3 (ORCPT ); Mon, 29 Jan 2018 16:12:29 -0500 Received: from avasout06.plus.net ([212.159.14.18]:40886 "EHLO avasout06.plus.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751812AbeA2VM0 (ORCPT ); Mon, 29 Jan 2018 16:12:26 -0500 Received: from lava ([80.229.148.18]) by smtp with ESMTP id gGj1e6XbyLydGgGj2eMdPi; Mon, 29 Jan 2018 21:12:24 +0000 X-CM-Score: 0.00 X-CNFS-Analysis: v=2.3 cv=DZU5VMlW c=1 sm=1 tr=0 a=o7Djd4SkmPXITDn8qH+ssQ==:117 a=o7Djd4SkmPXITDn8qH+ssQ==:17 a=RgaUWeydRksA:10 a=beXlt2xKAAAA:8 a=Yank7jU5L66g0idzKXkA:9 a=f4Pc3A2OjIs_EhAs:21 a=MEMydvFXYS4rzyts:21 a=XH5AVk0MFry9O7M-:21 a=gcY2M4Ci8LIz02MwfSIM:22 Received: from nick by lava with local (Exim 4.86_2) (envelope-from ) id 1egGj0-0000Av-Ar; Mon, 29 Jan 2018 21:12:22 +0000 From: Nick Dyer To: Dmitry Torokhov Cc: Benjamin Tissoires , Andrew Duggan , Christopher Heiny , linux-input@vger.kernel.org, Chris Healy , Lucas Stach , Nick Dyer Subject: [PATCH v2] Input: synaptics-rmi4 - convert irq distribution to irq_domain Date: Mon, 29 Jan 2018 21:12:09 +0000 Message-Id: <1517260329-634-1-git-send-email-nick@shmanahar.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <20180124222315.GA28780@lava.h.shmanahar.org> References: <20180124222315.GA28780@lava.h.shmanahar.org> X-CMAE-Envelope: MS4wfHWzUhyMcwmKfywQ8nm+TreOUUWAv5fQLnCKQUHDmle3ZKPkFpczz+qp2+/FaYH3CdPGrI4t3eKoq4tFeDWP/Jk19UvsXHZ1cUXMMCHnhqLSTjo8A4W4 uy0Bwf4q08htMg== Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Convert the RMI driver to use the standard mechanism for distributing IRQs to the various functions. Tested on: * S7300 (F11, F34, F54) * S7817 (F12, F34, F54) Signed-off-by: Nick Dyer --- drivers/input/rmi4/Kconfig | 1 + drivers/input/rmi4/rmi_bus.c | 42 +++++++++++++++++++++++++++++++++- drivers/input/rmi4/rmi_bus.h | 2 +- drivers/input/rmi4/rmi_driver.c | 50 +++++++++++++++-------------------------- drivers/input/rmi4/rmi_f01.c | 10 ++++----- drivers/input/rmi4/rmi_f03.c | 9 ++++---- drivers/input/rmi4/rmi_f11.c | 25 +++++++++------------ drivers/input/rmi4/rmi_f12.c | 8 +++---- drivers/input/rmi4/rmi_f30.c | 9 ++++---- drivers/input/rmi4/rmi_f34.c | 5 +++-- drivers/input/rmi4/rmi_f54.c | 6 ----- include/linux/rmi.h | 2 ++ 12 files changed, 95 insertions(+), 74 deletions(-) diff --git a/drivers/input/rmi4/Kconfig b/drivers/input/rmi4/Kconfig index 7172b88..fad2eae 100644 --- a/drivers/input/rmi4/Kconfig +++ b/drivers/input/rmi4/Kconfig @@ -3,6 +3,7 @@ # config RMI4_CORE tristate "Synaptics RMI4 bus support" + select IRQ_DOMAIN help Say Y here if you want to support the Synaptics RMI4 bus. This is required for all RMI4 device support. diff --git a/drivers/input/rmi4/rmi_bus.c b/drivers/input/rmi4/rmi_bus.c index ae1bffe..6360188 100644 --- a/drivers/input/rmi4/rmi_bus.c +++ b/drivers/input/rmi4/rmi_bus.c @@ -9,6 +9,8 @@ #include #include +#include +#include #include #include #include @@ -167,6 +169,37 @@ static inline void rmi_function_of_probe(struct rmi_function *fn) {} #endif +static struct irq_chip rmi_irq_chip = { + .name = "rmi4", +}; + +static int rmi_create_function_irq(struct rmi_function *fn, + struct rmi_function_handler *handler) { + struct rmi_driver_data *drvdata = dev_get_drvdata(&fn->rmi_dev->dev); + int i, irq, error; + + for (i = 0; i < fn->num_of_irqs; i++) { + set_bit(fn->irq_pos + i, fn->irq_mask); + + irq = irq_create_mapping(drvdata->irqdomain, + fn->irq_pos + i); + + irq_set_chip_data(irq, fn); + irq_set_chip_and_handler(irq, &rmi_irq_chip, handle_simple_irq); + irq_set_nested_thread(irq, 1); + + error = devm_request_threaded_irq(&fn->dev, irq, NULL, + handler->attention, IRQF_ONESHOT, + dev_name(&fn->dev), fn); + if (error) { + dev_err(&fn->dev, "Failed registering IRQ %d\n", error); + return error; + } + } + + return 0; +} + static int rmi_function_probe(struct device *dev) { struct rmi_function *fn = to_rmi_function(dev); @@ -178,7 +211,14 @@ static int rmi_function_probe(struct device *dev) if (handler->probe) { error = handler->probe(fn); - return error; + if (error) + return error; + } + + if (fn->num_of_irqs && handler->attention) { + error = rmi_create_function_irq(fn, handler); + if (error) + return error; } return 0; diff --git a/drivers/input/rmi4/rmi_bus.h b/drivers/input/rmi4/rmi_bus.h index b7625a9..cbf8f3a 100644 --- a/drivers/input/rmi4/rmi_bus.h +++ b/drivers/input/rmi4/rmi_bus.h @@ -76,7 +76,7 @@ struct rmi_function_handler { void (*remove)(struct rmi_function *fn); int (*config)(struct rmi_function *fn); int (*reset)(struct rmi_function *fn); - int (*attention)(struct rmi_function *fn, unsigned long *irq_bits); + irqreturn_t (*attention)(int irq, void *ctx); int (*suspend)(struct rmi_function *fn); int (*resume)(struct rmi_function *fn); }; diff --git a/drivers/input/rmi4/rmi_driver.c b/drivers/input/rmi4/rmi_driver.c index 141ea22..bc3a383 100644 --- a/drivers/input/rmi4/rmi_driver.c +++ b/drivers/input/rmi4/rmi_driver.c @@ -21,6 +21,7 @@ #include #include #include +#include #include #include #include "rmi_bus.h" @@ -127,28 +128,11 @@ static int rmi_driver_process_config_requests(struct rmi_device *rmi_dev) return 0; } -static void process_one_interrupt(struct rmi_driver_data *data, - struct rmi_function *fn) -{ - struct rmi_function_handler *fh; - - if (!fn || !fn->dev.driver) - return; - - fh = to_rmi_function_handler(fn->dev.driver); - if (fh->attention) { - bitmap_and(data->fn_irq_bits, data->irq_status, fn->irq_mask, - data->irq_count); - if (!bitmap_empty(data->fn_irq_bits, data->irq_count)) - fh->attention(fn, data->fn_irq_bits); - } -} - static int rmi_process_interrupt_requests(struct rmi_device *rmi_dev) { struct rmi_driver_data *data = dev_get_drvdata(&rmi_dev->dev); struct device *dev = &rmi_dev->dev; - struct rmi_function *entry; + int i; int error; if (!data) @@ -173,16 +157,8 @@ static int rmi_process_interrupt_requests(struct rmi_device *rmi_dev) */ mutex_unlock(&data->irq_mutex); - /* - * It would be nice to be able to use irq_chip to handle these - * nested IRQs. Unfortunately, most of the current customers for - * this driver are using older kernels (3.0.x) that don't support - * the features required for that. Once they've shifted to more - * recent kernels (say, 3.3 and higher), this should be switched to - * use irq_chip. - */ - list_for_each_entry(entry, &data->function_list, node) - process_one_interrupt(data, entry); + for_each_set_bit(i, data->irq_status, data->irq_count) + handle_nested_irq(irq_find_mapping(data->irqdomain, i)); if (data->input) input_sync(data->input); @@ -1000,9 +976,12 @@ EXPORT_SYMBOL_GPL(rmi_driver_resume); static int rmi_driver_remove(struct device *dev) { struct rmi_device *rmi_dev = to_rmi_device(dev); + struct rmi_driver_data *data = dev_get_drvdata(&rmi_dev->dev); rmi_disable_irq(rmi_dev, false); + irq_domain_remove(data->irqdomain); + rmi_f34_remove_sysfs(rmi_dev); rmi_free_function_list(rmi_dev); @@ -1034,7 +1013,8 @@ int rmi_probe_interrupts(struct rmi_driver_data *data) { struct rmi_device *rmi_dev = data->rmi_dev; struct device *dev = &rmi_dev->dev; - int irq_count; + struct device_node *rmi_of_node = rmi_dev->xport->dev->of_node; + int irq_count = 0; size_t size; int retval; @@ -1045,7 +1025,6 @@ int rmi_probe_interrupts(struct rmi_driver_data *data) * being accessed. */ rmi_dbg(RMI_DEBUG_CORE, dev, "%s: Counting IRQs.\n", __func__); - irq_count = 0; data->bootloader_mode = false; retval = rmi_scan_pdt(rmi_dev, &irq_count, rmi_count_irqs); @@ -1057,6 +1036,14 @@ int rmi_probe_interrupts(struct rmi_driver_data *data) if (data->bootloader_mode) dev_warn(dev, "Device in bootloader mode.\n"); + /* Allocate and register a linear revmap irq_domain */ + data->irqdomain = irq_domain_add_linear(rmi_of_node, irq_count, + &irq_domain_simple_ops, data); + if (!data->irqdomain) { + dev_err(&rmi_dev->dev, "Failed to create IRQ domain\n"); + return PTR_ERR(data->irqdomain); + } + data->irq_count = irq_count; data->num_of_irq_regs = (data->irq_count + 7) / 8; @@ -1079,10 +1066,9 @@ int rmi_init_functions(struct rmi_driver_data *data) { struct rmi_device *rmi_dev = data->rmi_dev; struct device *dev = &rmi_dev->dev; - int irq_count; + int irq_count = 0; int retval; - irq_count = 0; rmi_dbg(RMI_DEBUG_CORE, dev, "%s: Creating functions.\n", __func__); retval = rmi_scan_pdt(rmi_dev, &irq_count, rmi_create_function); if (retval < 0) { diff --git a/drivers/input/rmi4/rmi_f01.c b/drivers/input/rmi4/rmi_f01.c index 8a07ae1..4edaa14 100644 --- a/drivers/input/rmi4/rmi_f01.c +++ b/drivers/input/rmi4/rmi_f01.c @@ -681,9 +681,9 @@ static int rmi_f01_resume(struct rmi_function *fn) return 0; } -static int rmi_f01_attention(struct rmi_function *fn, - unsigned long *irq_bits) +static irqreturn_t rmi_f01_attention(int irq, void *ctx) { + struct rmi_function *fn = ctx; struct rmi_device *rmi_dev = fn->rmi_dev; int error; u8 device_status; @@ -692,7 +692,7 @@ static int rmi_f01_attention(struct rmi_function *fn, if (error) { dev_err(&fn->dev, "Failed to read device status: %d.\n", error); - return error; + return IRQ_RETVAL(error); } if (RMI_F01_STATUS_BOOTLOADER(device_status)) @@ -704,11 +704,11 @@ static int rmi_f01_attention(struct rmi_function *fn, error = rmi_dev->driver->reset_handler(rmi_dev); if (error) { dev_err(&fn->dev, "Device reset failed: %d\n", error); - return error; + return IRQ_RETVAL(error); } } - return 0; + return IRQ_HANDLED; } struct rmi_function_handler rmi_f01_handler = { diff --git a/drivers/input/rmi4/rmi_f03.c b/drivers/input/rmi4/rmi_f03.c index ad71a5e..b9f07c9 100644 --- a/drivers/input/rmi4/rmi_f03.c +++ b/drivers/input/rmi4/rmi_f03.c @@ -199,8 +199,9 @@ static int rmi_f03_config(struct rmi_function *fn) return 0; } -static int rmi_f03_attention(struct rmi_function *fn, unsigned long *irq_bits) +static irqreturn_t rmi_f03_attention(int irq, void *ctx) { + struct rmi_function *fn = ctx; struct rmi_device *rmi_dev = fn->rmi_dev; struct rmi_driver_data *drvdata = dev_get_drvdata(&rmi_dev->dev); struct f03_data *f03 = dev_get_drvdata(&fn->dev); @@ -217,7 +218,7 @@ static int rmi_f03_attention(struct rmi_function *fn, unsigned long *irq_bits) /* First grab the data passed by the transport device */ if (drvdata->attn_data.size < ob_len) { dev_warn(&fn->dev, "F03 interrupted, but data is missing!\n"); - return 0; + return IRQ_HANDLED; } memcpy(obs, drvdata->attn_data.data, ob_len); @@ -233,7 +234,7 @@ static int rmi_f03_attention(struct rmi_function *fn, unsigned long *irq_bits) "%s: Failed to read F03 output buffers: %d\n", __func__, error); serio_interrupt(f03->serio, 0, SERIO_TIMEOUT); - return error; + return IRQ_RETVAL(error); } } @@ -259,7 +260,7 @@ static int rmi_f03_attention(struct rmi_function *fn, unsigned long *irq_bits) serio_interrupt(f03->serio, ob_data, serio_flags); } - return 0; + return IRQ_HANDLED; } static void rmi_f03_remove(struct rmi_function *fn) diff --git a/drivers/input/rmi4/rmi_f11.c b/drivers/input/rmi4/rmi_f11.c index bc5e37f..e587c87 100644 --- a/drivers/input/rmi4/rmi_f11.c +++ b/drivers/input/rmi4/rmi_f11.c @@ -571,8 +571,7 @@ static inline u8 rmi_f11_parse_finger_state(const u8 *f_state, u8 n_finger) static void rmi_f11_finger_handler(struct f11_data *f11, struct rmi_2d_sensor *sensor, - unsigned long *irq_bits, int num_irq_regs, - int size) + int num_irq_regs, int size) { const u8 *f_state = f11->data.f_state; u8 finger_state; @@ -581,12 +580,7 @@ static void rmi_f11_finger_handler(struct f11_data *f11, int rel_fingers; int abs_size = sensor->nbr_fingers * RMI_F11_ABS_BYTES; - int abs_bits = bitmap_and(f11->result_bits, irq_bits, f11->abs_mask, - num_irq_regs * 8); - int rel_bits = bitmap_and(f11->result_bits, irq_bits, f11->rel_mask, - num_irq_regs * 8); - - if (abs_bits) { + if (sensor->report_abs) { if (abs_size > size) abs_fingers = size / RMI_F11_ABS_BYTES; else @@ -606,7 +600,7 @@ static void rmi_f11_finger_handler(struct f11_data *f11, } } - if (rel_bits) { + if (sensor->report_rel) { if ((abs_size + sensor->nbr_fingers * RMI_F11_REL_BYTES) > size) rel_fingers = (size - abs_size) / RMI_F11_REL_BYTES; else @@ -616,7 +610,7 @@ static void rmi_f11_finger_handler(struct f11_data *f11, rmi_f11_rel_pos_report(f11, i); } - if (abs_bits) { + if (sensor->report_abs) { /* * the absolute part is made in 2 parts to allow the kernel * tracking to take place. @@ -1275,8 +1269,9 @@ static int rmi_f11_config(struct rmi_function *fn) return 0; } -static int rmi_f11_attention(struct rmi_function *fn, unsigned long *irq_bits) +static irqreturn_t rmi_f11_attention(int irq, void *ctx) { + struct rmi_function *fn = ctx; struct rmi_device *rmi_dev = fn->rmi_dev; struct rmi_driver_data *drvdata = dev_get_drvdata(&rmi_dev->dev); struct f11_data *f11 = dev_get_drvdata(&fn->dev); @@ -1302,13 +1297,13 @@ static int rmi_f11_attention(struct rmi_function *fn, unsigned long *irq_bits) data_base_addr, f11->sensor.data_pkt, f11->sensor.pkt_size); if (error < 0) - return error; + return IRQ_RETVAL(error); } - rmi_f11_finger_handler(f11, &f11->sensor, irq_bits, - drvdata->num_of_irq_regs, valid_bytes); + rmi_f11_finger_handler(f11, &f11->sensor, + drvdata->num_of_irq_regs, valid_bytes); - return 0; + return IRQ_HANDLED; } static int rmi_f11_resume(struct rmi_function *fn) diff --git a/drivers/input/rmi4/rmi_f12.c b/drivers/input/rmi4/rmi_f12.c index 8b0db08..e226def 100644 --- a/drivers/input/rmi4/rmi_f12.c +++ b/drivers/input/rmi4/rmi_f12.c @@ -197,10 +197,10 @@ static void rmi_f12_process_objects(struct f12_data *f12, u8 *data1, int size) rmi_2d_sensor_abs_report(sensor, &sensor->objs[i], i); } -static int rmi_f12_attention(struct rmi_function *fn, - unsigned long *irq_nr_regs) +static irqreturn_t rmi_f12_attention(int irq, void *ctx) { int retval; + struct rmi_function *fn = ctx; struct rmi_device *rmi_dev = fn->rmi_dev; struct rmi_driver_data *drvdata = dev_get_drvdata(&rmi_dev->dev); struct f12_data *f12 = dev_get_drvdata(&fn->dev); @@ -222,7 +222,7 @@ static int rmi_f12_attention(struct rmi_function *fn, if (retval < 0) { dev_err(&fn->dev, "Failed to read object data. Code: %d.\n", retval); - return retval; + return IRQ_RETVAL(retval); } } @@ -232,7 +232,7 @@ static int rmi_f12_attention(struct rmi_function *fn, input_mt_sync_frame(sensor->input); - return 0; + return IRQ_HANDLED; } static int rmi_f12_write_control_regs(struct rmi_function *fn) diff --git a/drivers/input/rmi4/rmi_f30.c b/drivers/input/rmi4/rmi_f30.c index 82e0f0d..5e3ed5a 100644 --- a/drivers/input/rmi4/rmi_f30.c +++ b/drivers/input/rmi4/rmi_f30.c @@ -122,8 +122,9 @@ static void rmi_f30_report_button(struct rmi_function *fn, } } -static int rmi_f30_attention(struct rmi_function *fn, unsigned long *irq_bits) +static irqreturn_t rmi_f30_attention(int irq, void *ctx) { + struct rmi_function *fn = ctx; struct f30_data *f30 = dev_get_drvdata(&fn->dev); struct rmi_driver_data *drvdata = dev_get_drvdata(&fn->rmi_dev->dev); int error; @@ -134,7 +135,7 @@ static int rmi_f30_attention(struct rmi_function *fn, unsigned long *irq_bits) if (drvdata->attn_data.size < f30->register_count) { dev_warn(&fn->dev, "F30 interrupted, but data is missing\n"); - return 0; + return IRQ_HANDLED; } memcpy(f30->data_regs, drvdata->attn_data.data, f30->register_count); @@ -147,7 +148,7 @@ static int rmi_f30_attention(struct rmi_function *fn, unsigned long *irq_bits) dev_err(&fn->dev, "%s: Failed to read F30 data registers: %d\n", __func__, error); - return error; + return IRQ_RETVAL(error); } } @@ -159,7 +160,7 @@ static int rmi_f30_attention(struct rmi_function *fn, unsigned long *irq_bits) rmi_f03_commit_buttons(f30->f03); } - return 0; + return IRQ_HANDLED; } static int rmi_f30_config(struct rmi_function *fn) diff --git a/drivers/input/rmi4/rmi_f34.c b/drivers/input/rmi4/rmi_f34.c index 4cfe970..7268cf9 100644 --- a/drivers/input/rmi4/rmi_f34.c +++ b/drivers/input/rmi4/rmi_f34.c @@ -101,8 +101,9 @@ static int rmi_f34_command(struct f34_data *f34, u8 command, return 0; } -static int rmi_f34_attention(struct rmi_function *fn, unsigned long *irq_bits) +static irqreturn_t rmi_f34_attention(int irq, void *ctx) { + struct rmi_function *fn = ctx; struct f34_data *f34 = dev_get_drvdata(&fn->dev); int ret; u8 status; @@ -127,7 +128,7 @@ static int rmi_f34_attention(struct rmi_function *fn, unsigned long *irq_bits) complete(&f34->v7.cmd_done); } - return 0; + return IRQ_HANDLED; } static int rmi_f34_write_blocks(struct f34_data *f34, const void *data, diff --git a/drivers/input/rmi4/rmi_f54.c b/drivers/input/rmi4/rmi_f54.c index 5343f2c..98a935e 100644 --- a/drivers/input/rmi4/rmi_f54.c +++ b/drivers/input/rmi4/rmi_f54.c @@ -610,11 +610,6 @@ static void rmi_f54_work(struct work_struct *work) mutex_unlock(&f54->data_mutex); } -static int rmi_f54_attention(struct rmi_function *fn, unsigned long *irqbits) -{ - return 0; -} - static int rmi_f54_config(struct rmi_function *fn) { struct rmi_driver *drv = fn->rmi_dev->driver; @@ -756,6 +751,5 @@ struct rmi_function_handler rmi_f54_handler = { .func = 0x54, .probe = rmi_f54_probe, .config = rmi_f54_config, - .attention = rmi_f54_attention, .remove = rmi_f54_remove, }; diff --git a/include/linux/rmi.h b/include/linux/rmi.h index 64125443..5ef5c7c 100644 --- a/include/linux/rmi.h +++ b/include/linux/rmi.h @@ -354,6 +354,8 @@ struct rmi_driver_data { struct mutex irq_mutex; struct input_dev *input; + struct irq_domain *irqdomain; + u8 pdt_props; u8 num_rx_electrodes;