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https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-01-26 18:43:33 -05:00
81d7cac4d1
The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it as merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Signed-off-by: Rob Herring <robh@kernel.org> [mpe: Fixup maple/setup.c which needs platform_device] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20230724210247.778034-1-robh@kernel.org
126 lines
2.7 KiB
C
126 lines
2.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (C) 2010 DENX Software Engineering
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*
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* Anatolij Gustschin, <agust@denx.de>
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*
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* PDM360NG board setup
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*/
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#include <linux/device.h>
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#include <linux/kernel.h>
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#include <linux/io.h>
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#include <linux/of.h>
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#include <linux/of_address.h>
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#include <linux/of_fdt.h>
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#include <asm/machdep.h>
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#include <asm/ipic.h>
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#include "mpc512x.h"
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#if defined(CONFIG_TOUCHSCREEN_ADS7846) || \
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defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
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#include <linux/interrupt.h>
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#include <linux/spi/ads7846.h>
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#include <linux/spi/spi.h>
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#include <linux/notifier.h>
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static void *pdm360ng_gpio_base;
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static int pdm360ng_get_pendown_state(void)
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{
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u32 reg;
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reg = in_be32(pdm360ng_gpio_base + 0xc);
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if (reg & 0x40)
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setbits32(pdm360ng_gpio_base + 0xc, 0x40);
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reg = in_be32(pdm360ng_gpio_base + 0x8);
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/* return 1 if pen is down */
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return (reg & 0x40) == 0;
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}
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static struct ads7846_platform_data pdm360ng_ads7846_pdata = {
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.model = 7845,
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.get_pendown_state = pdm360ng_get_pendown_state,
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.irq_flags = IRQF_TRIGGER_LOW,
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};
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static int __init pdm360ng_penirq_init(void)
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{
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struct device_node *np;
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np = of_find_compatible_node(NULL, NULL, "fsl,mpc5121-gpio");
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if (!np) {
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pr_err("%s: Can't find 'mpc5121-gpio' node\n", __func__);
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return -ENODEV;
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}
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pdm360ng_gpio_base = of_iomap(np, 0);
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of_node_put(np);
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if (!pdm360ng_gpio_base) {
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pr_err("%s: Can't map gpio regs.\n", __func__);
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return -ENODEV;
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}
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out_be32(pdm360ng_gpio_base + 0xc, 0xffffffff);
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setbits32(pdm360ng_gpio_base + 0x18, 0x2000);
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setbits32(pdm360ng_gpio_base + 0x10, 0x40);
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return 0;
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}
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static int pdm360ng_touchscreen_notifier_call(struct notifier_block *nb,
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unsigned long event, void *__dev)
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{
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struct device *dev = __dev;
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if ((event == BUS_NOTIFY_ADD_DEVICE) &&
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of_device_is_compatible(dev->of_node, "ti,ads7846")) {
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dev->platform_data = &pdm360ng_ads7846_pdata;
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return NOTIFY_OK;
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}
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return NOTIFY_DONE;
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}
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static struct notifier_block pdm360ng_touchscreen_nb = {
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.notifier_call = pdm360ng_touchscreen_notifier_call,
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};
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static void __init pdm360ng_touchscreen_init(void)
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{
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if (pdm360ng_penirq_init())
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return;
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bus_register_notifier(&spi_bus_type, &pdm360ng_touchscreen_nb);
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}
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#else
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static inline void __init pdm360ng_touchscreen_init(void)
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{
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}
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#endif /* CONFIG_TOUCHSCREEN_ADS7846 */
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void __init pdm360ng_init(void)
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{
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mpc512x_init();
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pdm360ng_touchscreen_init();
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}
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static int __init pdm360ng_probe(void)
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{
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mpc512x_init_early();
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return 1;
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}
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define_machine(pdm360ng) {
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.name = "PDM360NG",
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.compatible = "ifm,pdm360ng",
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.probe = pdm360ng_probe,
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.setup_arch = mpc512x_setup_arch,
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.init = pdm360ng_init,
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.init_IRQ = mpc512x_init_IRQ,
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.get_irq = ipic_get_irq,
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.restart = mpc512x_restart,
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};
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