Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Quentin Schulz | 762 | 99.35% | 1 | 20.00% |
Thomas Gleixner | 2 | 0.26% | 1 | 20.00% |
Rikard Falkeborn | 1 | 0.13% | 1 | 20.00% |
Lee Jones | 1 | 0.13% | 1 | 20.00% |
Aidan MacDonald | 1 | 0.13% | 1 | 20.00% |
Total | 767 | 5 |
// SPDX-License-Identifier: GPL-2.0-only /* ADC MFD core driver for sunxi platforms * * Copyright (c) 2016 Quentin Schulz <quentin.schulz@free-electrons.com> */ #include <linux/interrupt.h> #include <linux/kernel.h> #include <linux/mfd/core.h> #include <linux/module.h> #include <linux/of_device.h> #include <linux/of_irq.h> #include <linux/regmap.h> #include <linux/mfd/sun4i-gpadc.h> #define ARCH_SUN4I_A10 0 #define ARCH_SUN5I_A13 1 #define ARCH_SUN6I_A31 2 static const struct resource adc_resources[] = { DEFINE_RES_IRQ_NAMED(SUN4I_GPADC_IRQ_FIFO_DATA, "FIFO_DATA_PENDING"), DEFINE_RES_IRQ_NAMED(SUN4I_GPADC_IRQ_TEMP_DATA, "TEMP_DATA_PENDING"), }; static const struct regmap_irq sun4i_gpadc_regmap_irq[] = { REGMAP_IRQ_REG(SUN4I_GPADC_IRQ_FIFO_DATA, 0, SUN4I_GPADC_INT_FIFOC_TP_DATA_IRQ_EN), REGMAP_IRQ_REG(SUN4I_GPADC_IRQ_TEMP_DATA, 0, SUN4I_GPADC_INT_FIFOC_TEMP_IRQ_EN), }; static const struct regmap_irq_chip sun4i_gpadc_regmap_irq_chip = { .name = "sun4i_gpadc_irq_chip", .status_base = SUN4I_GPADC_INT_FIFOS, .ack_base = SUN4I_GPADC_INT_FIFOS, .unmask_base = SUN4I_GPADC_INT_FIFOC, .init_ack_masked = true, .irqs = sun4i_gpadc_regmap_irq, .num_irqs = ARRAY_SIZE(sun4i_gpadc_regmap_irq), .num_regs = 1, }; static struct mfd_cell sun4i_gpadc_cells[] = { { .name = "sun4i-a10-gpadc-iio", .resources = adc_resources, .num_resources = ARRAY_SIZE(adc_resources), }, { .name = "iio_hwmon" } }; static struct mfd_cell sun5i_gpadc_cells[] = { { .name = "sun5i-a13-gpadc-iio", .resources = adc_resources, .num_resources = ARRAY_SIZE(adc_resources), }, { .name = "iio_hwmon" }, }; static struct mfd_cell sun6i_gpadc_cells[] = { { .name = "sun6i-a31-gpadc-iio", .resources = adc_resources, .num_resources = ARRAY_SIZE(adc_resources), }, { .name = "iio_hwmon" }, }; static const struct regmap_config sun4i_gpadc_regmap_config = { .reg_bits = 32, .val_bits = 32, .reg_stride = 4, .fast_io = true, }; static const struct of_device_id sun4i_gpadc_of_match[] = { { .compatible = "allwinner,sun4i-a10-ts", .data = (void *)ARCH_SUN4I_A10, }, { .compatible = "allwinner,sun5i-a13-ts", .data = (void *)ARCH_SUN5I_A13, }, { .compatible = "allwinner,sun6i-a31-ts", .data = (void *)ARCH_SUN6I_A31, }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, sun4i_gpadc_of_match); static int sun4i_gpadc_probe(struct platform_device *pdev) { struct sun4i_gpadc_dev *dev; struct resource *mem; const struct of_device_id *of_id; const struct mfd_cell *cells; unsigned int irq, size; int ret; of_id = of_match_node(sun4i_gpadc_of_match, pdev->dev.of_node); if (!of_id) return -EINVAL; switch ((long)of_id->data) { case ARCH_SUN4I_A10: cells = sun4i_gpadc_cells; size = ARRAY_SIZE(sun4i_gpadc_cells); break; case ARCH_SUN5I_A13: cells = sun5i_gpadc_cells; size = ARRAY_SIZE(sun5i_gpadc_cells); break; case ARCH_SUN6I_A31: cells = sun6i_gpadc_cells; size = ARRAY_SIZE(sun6i_gpadc_cells); break; default: return -EINVAL; } dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL); if (!dev) return -ENOMEM; mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); dev->base = devm_ioremap_resource(&pdev->dev, mem); if (IS_ERR(dev->base)) return PTR_ERR(dev->base); dev->dev = &pdev->dev; dev_set_drvdata(dev->dev, dev); dev->regmap = devm_regmap_init_mmio(dev->dev, dev->base, &sun4i_gpadc_regmap_config); if (IS_ERR(dev->regmap)) { ret = PTR_ERR(dev->regmap); dev_err(&pdev->dev, "failed to init regmap: %d\n", ret); return ret; } /* Disable all interrupts */ regmap_write(dev->regmap, SUN4I_GPADC_INT_FIFOC, 0); irq = platform_get_irq(pdev, 0); ret = devm_regmap_add_irq_chip(&pdev->dev, dev->regmap, irq, IRQF_ONESHOT, 0, &sun4i_gpadc_regmap_irq_chip, &dev->regmap_irqc); if (ret) { dev_err(&pdev->dev, "failed to add irq chip: %d\n", ret); return ret; } ret = devm_mfd_add_devices(dev->dev, 0, cells, size, NULL, 0, NULL); if (ret) { dev_err(&pdev->dev, "failed to add MFD devices: %d\n", ret); return ret; } return 0; } static struct platform_driver sun4i_gpadc_driver = { .driver = { .name = "sun4i-gpadc", .of_match_table = sun4i_gpadc_of_match, }, .probe = sun4i_gpadc_probe, }; module_platform_driver(sun4i_gpadc_driver); MODULE_DESCRIPTION("Allwinner sunxi platforms' GPADC MFD core driver"); MODULE_AUTHOR("Quentin Schulz <quentin.schulz@free-electrons.com>"); MODULE_LICENSE("GPL v2");
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