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[69.109.179.158]) by smtp.gmail.com with ESMTPSA id bw28-20020a05690c079c00b00545a08184bfsm955644ywb.79.2023.04.07.04.50.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 07 Apr 2023 04:50:12 -0700 (PDT) From: William Breathitt Gray To: Mark Brown , Linus Walleij , Bartosz Golaszewski Cc: linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, Andy Shevchenko , William Breathitt Gray Subject: [RESEND PATCH v3 1/2] gpio: 104-dio-48e: Implement struct dio48e_gpio Date: Fri, 7 Apr 2023 07:47:32 -0400 Message-ID: X-Mailer: git-send-email 2.39.2 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org Message-ID: <20230407114732.6VOJdxNSnnN8bnM3YczwirgbXvf_77gUslGlX4QkE-Q@z> A private data structure struct dio48e_gpio is introduced to facilitate passage of the regmap and IRQ mask state for the device to the callback dio48e_handle_mask_sync(). This is in preparation for the removal of the handle_mask_sync() map parameter in a subsequent patch. Signed-off-by: William Breathitt Gray Reviewed-by: Linus Walleij --- Changes in v3: - Inline dio48gpio->map usage in dio48e_handle_mask_sync() to avoid redefining map parameter drivers/gpio/gpio-104-dio-48e.c | 35 ++++++++++++++++++++++----------- 1 file changed, 24 insertions(+), 11 deletions(-) diff --git a/drivers/gpio/gpio-104-dio-48e.c b/drivers/gpio/gpio-104-dio-48e.c index 74e2721f2613..3516321c92b0 100644 --- a/drivers/gpio/gpio-104-dio-48e.c +++ b/drivers/gpio/gpio-104-dio-48e.c @@ -99,13 +99,23 @@ static const struct regmap_irq dio48e_regmap_irqs[] = { DIO48E_REGMAP_IRQ(0), DIO48E_REGMAP_IRQ(1), }; +/** + * struct dio48e_gpio - GPIO device private data structure + * @map: Regmap for the device + * @irq_mask: Current IRQ mask state on the device + */ +struct dio48e_gpio { + struct regmap *map; + unsigned int irq_mask; +}; + static int dio48e_handle_mask_sync(struct regmap *const map, const int index, const unsigned int mask_buf_def, const unsigned int mask_buf, void *const irq_drv_data) { - unsigned int *const irq_mask = irq_drv_data; - const unsigned int prev_mask = *irq_mask; + struct dio48e_gpio *const dio48egpio = irq_drv_data; + const unsigned int prev_mask = dio48egpio->irq_mask; int err; unsigned int val; @@ -114,19 +124,19 @@ static int dio48e_handle_mask_sync(struct regmap *const map, const int index, return 0; /* remember the current mask for the next mask sync */ - *irq_mask = mask_buf; + dio48egpio->irq_mask = mask_buf; /* if all previously masked, enable interrupts when unmasking */ if (prev_mask == mask_buf_def) { - err = regmap_write(map, DIO48E_CLEAR_INTERRUPT, 0x00); + err = regmap_write(dio48egpio->map, DIO48E_CLEAR_INTERRUPT, 0x00); if (err) return err; - return regmap_write(map, DIO48E_ENABLE_INTERRUPT, 0x00); + return regmap_write(dio48egpio->map, DIO48E_ENABLE_INTERRUPT, 0x00); } /* if all are currently masked, disable interrupts */ if (mask_buf == mask_buf_def) - return regmap_read(map, DIO48E_DISABLE_INTERRUPT, &val); + return regmap_read(dio48egpio->map, DIO48E_DISABLE_INTERRUPT, &val); return 0; } @@ -167,7 +177,7 @@ static int dio48e_probe(struct device *dev, unsigned int id) struct regmap *map; int err; struct regmap_irq_chip *chip; - unsigned int irq_mask; + struct dio48e_gpio *dio48egpio; struct regmap_irq_chip_data *chip_data; if (!devm_request_region(dev, base[id], DIO48E_EXTENT, name)) { @@ -185,12 +195,14 @@ static int dio48e_probe(struct device *dev, unsigned int id) return dev_err_probe(dev, PTR_ERR(map), "Unable to initialize register map\n"); - chip = devm_kzalloc(dev, sizeof(*chip), GFP_KERNEL); - if (!chip) + dio48egpio = devm_kzalloc(dev, sizeof(*dio48egpio), GFP_KERNEL); + if (!dio48egpio) return -ENOMEM; - chip->irq_drv_data = devm_kzalloc(dev, sizeof(irq_mask), GFP_KERNEL); - if (!chip->irq_drv_data) + dio48egpio->map = map; + + chip = devm_kzalloc(dev, sizeof(*chip), GFP_KERNEL); + if (!chip) return -ENOMEM; chip->name = name; @@ -205,6 +217,7 @@ static int dio48e_probe(struct device *dev, unsigned int id) chip->irqs = dio48e_regmap_irqs; chip->num_irqs = ARRAY_SIZE(dio48e_regmap_irqs); chip->handle_mask_sync = dio48e_handle_mask_sync; + chip->irq_drv_data = dio48egpio; /* Initialize to prevent spurious interrupts before we're ready */ err = dio48e_irq_init_hw(map);