From f146c7bc85a51f95c05e0f8173d484eb301ece78 Mon Sep 17 00:00:00 2001 From: Danilo Krummrich Date: Thu, 13 Aug 2026 18:52:04 +0200 Subject: PCI: Add pci_irq_type() to query the allocated interrupt type Add a helper that returns PCI_IRQ_MSIX, PCI_IRQ_MSI, or PCI_IRQ_INTX based on the interrupt type the PCI core selected after pci_alloc_irq_vectors(). Several drivers already open-code this check against pdev->msix_enabled and pdev->msi_enabled, or even open code this helper [1]. A common helper avoids the duplication and keeps drivers from accessing the bitfield directly (see also [2]). Acked-by: Bjorn Helgaas Tested-by: John Hubbard Link: https://elixir.bootlin.com/linux/v7.1/source/drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c#L196 [1] Inspired-by: John Hubbard Link: https://lore.kernel.org/all/DKKG2QM3YJYB.Z2H2B2UXJ75N@kernel.org/ [2] Reviewed-by: Gary Guo Link: https://patch.msgid.link/20260813165234.620555-5-dakr@kernel.org [ Add missing pci_irq_type() stub for CONFIG_PCI=n. ] Signed-off-by: Danilo Krummrich --- drivers/input/touchscreen/tsc2004.c | 73 +++++++++++++++++++++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 drivers/input/touchscreen/tsc2004.c (limited to 'drivers/input/touchscreen/tsc2004.c') diff --git a/drivers/input/touchscreen/tsc2004.c b/drivers/input/touchscreen/tsc2004.c new file mode 100644 index 000000000..130aeb735 --- /dev/null +++ b/drivers/input/touchscreen/tsc2004.c @@ -0,0 +1,73 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * TSC2004 touchscreen driver + * + * Copyright (C) 2015 QWERTY Embedded Design + * Copyright (C) 2015 EMAC Inc. + */ + +#include +#include +#include +#include +#include +#include "tsc200x-core.h" + +static const struct input_id tsc2004_input_id = { + .bustype = BUS_I2C, + .product = 2004, +}; + +static int tsc2004_cmd(struct device *dev, u8 cmd) +{ + u8 tx = TSC200X_CMD | TSC200X_CMD_12BIT | cmd; + s32 data; + struct i2c_client *i2c = to_i2c_client(dev); + + data = i2c_smbus_write_byte(i2c, tx); + if (data < 0) { + dev_err(dev, "%s: failed, command: %x i2c error: %d\n", + __func__, cmd, data); + return data; + } + + return 0; +} + +static int tsc2004_probe(struct i2c_client *i2c) + +{ + return tsc200x_probe(&i2c->dev, i2c->irq, &tsc2004_input_id, + devm_regmap_init_i2c(i2c, &tsc200x_regmap_config), + tsc2004_cmd); +} + +static const struct i2c_device_id tsc2004_idtable[] = { + { .name = "tsc2004" }, + { } +}; +MODULE_DEVICE_TABLE(i2c, tsc2004_idtable); + +#ifdef CONFIG_OF +static const struct of_device_id tsc2004_of_match[] = { + { .compatible = "ti,tsc2004" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, tsc2004_of_match); +#endif + +static struct i2c_driver tsc2004_driver = { + .driver = { + .name = "tsc2004", + .dev_groups = tsc200x_groups, + .of_match_table = of_match_ptr(tsc2004_of_match), + .pm = pm_sleep_ptr(&tsc200x_pm_ops), + }, + .id_table = tsc2004_idtable, + .probe = tsc2004_probe, +}; +module_i2c_driver(tsc2004_driver); + +MODULE_AUTHOR("Michael Welling "); +MODULE_DESCRIPTION("TSC2004 Touchscreen Driver"); +MODULE_LICENSE("GPL"); -- cgit v1.3.1