From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- drivers/input/serio/i8042-sparcio.h | 168 ++++++++++++++++++++++++++++++++++++ 1 file changed, 168 insertions(+) create mode 100644 drivers/input/serio/i8042-sparcio.h (limited to 'drivers/input/serio/i8042-sparcio.h') diff --git a/drivers/input/serio/i8042-sparcio.h b/drivers/input/serio/i8042-sparcio.h new file mode 100644 index 000000000..c712c1fe0 --- /dev/null +++ b/drivers/input/serio/i8042-sparcio.h @@ -0,0 +1,168 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _I8042_SPARCIO_H +#define _I8042_SPARCIO_H + +#include +#include + +#include +#include +#include + +static int i8042_kbd_irq = -1; +static int i8042_aux_irq = -1; +#define I8042_KBD_IRQ i8042_kbd_irq +#define I8042_AUX_IRQ i8042_aux_irq + +#define I8042_KBD_PHYS_DESC "sparcps2/serio0" +#define I8042_AUX_PHYS_DESC "sparcps2/serio1" +#define I8042_MUX_PHYS_DESC "sparcps2/serio%d" + +static void __iomem *kbd_iobase; + +#define I8042_COMMAND_REG (kbd_iobase + 0x64UL) +#define I8042_DATA_REG (kbd_iobase + 0x60UL) + +static inline int i8042_read_data(void) +{ + return readb(kbd_iobase + 0x60UL); +} + +static inline int i8042_read_status(void) +{ + return readb(kbd_iobase + 0x64UL); +} + +static inline void i8042_write_data(int val) +{ + writeb(val, kbd_iobase + 0x60UL); +} + +static inline void i8042_write_command(int val) +{ + writeb(val, kbd_iobase + 0x64UL); +} + +#ifdef CONFIG_PCI + +static struct resource *kbd_res; + +#define OBP_PS2KBD_NAME1 "kb_ps2" +#define OBP_PS2KBD_NAME2 "keyboard" +#define OBP_PS2MS_NAME1 "kdmouse" +#define OBP_PS2MS_NAME2 "mouse" + +static int sparc_i8042_probe(struct platform_device *op) +{ + struct device_node *dp; + + for_each_child_of_node(op->dev.of_node, dp) { + if (of_node_name_eq(dp, OBP_PS2KBD_NAME1) || + of_node_name_eq(dp, OBP_PS2KBD_NAME2)) { + struct platform_device *kbd = of_find_device_by_node(dp); + unsigned int irq = kbd->archdata.irqs[0]; + if (irq == 0xffffffff) + irq = op->archdata.irqs[0]; + i8042_kbd_irq = irq; + kbd_iobase = of_ioremap(&kbd->resource[0], + 0, 8, "kbd"); + kbd_res = &kbd->resource[0]; + } else if (of_node_name_eq(dp, OBP_PS2MS_NAME1) || + of_node_name_eq(dp, OBP_PS2MS_NAME2)) { + struct platform_device *ms = of_find_device_by_node(dp); + unsigned int irq = ms->archdata.irqs[0]; + if (irq == 0xffffffff) + irq = op->archdata.irqs[0]; + i8042_aux_irq = irq; + } + } + + return 0; +} + +static int sparc_i8042_remove(struct platform_device *op) +{ + of_iounmap(kbd_res, kbd_iobase, 8); + + return 0; +} + +static const struct of_device_id sparc_i8042_match[] = { + { + .name = "8042", + }, + {}, +}; +MODULE_DEVICE_TABLE(of, sparc_i8042_match); + +static struct platform_driver sparc_i8042_driver = { + .driver = { + .name = "i8042", + .of_match_table = sparc_i8042_match, + }, + .probe = sparc_i8042_probe, + .remove = sparc_i8042_remove, +}; + +static bool i8042_is_mr_coffee(void) +{ + struct device_node *root; + const char *name; + bool is_mr_coffee; + + root = of_find_node_by_path("/"); + + name = of_get_property(root, "name", NULL); + is_mr_coffee = name && !strcmp(name, "SUNW,JavaStation-1"); + + of_node_put(root); + + return is_mr_coffee; +} + +static int __init i8042_platform_init(void) +{ + if (i8042_is_mr_coffee()) { + /* Hardcoded values for MrCoffee. */ + i8042_kbd_irq = i8042_aux_irq = 13 | 0x20; + kbd_iobase = ioremap(0x71300060, 8); + if (!kbd_iobase) + return -ENODEV; + } else { + int err = platform_driver_register(&sparc_i8042_driver); + if (err) + return err; + + if (i8042_kbd_irq == -1 || + i8042_aux_irq == -1) { + if (kbd_iobase) { + of_iounmap(kbd_res, kbd_iobase, 8); + kbd_iobase = (void __iomem *) NULL; + } + return -ENODEV; + } + } + + i8042_reset = I8042_RESET_ALWAYS; + + return 0; +} + +static inline void i8042_platform_exit(void) +{ + if (!i8042_is_mr_coffee()) + platform_driver_unregister(&sparc_i8042_driver); +} + +#else /* !CONFIG_PCI */ +static int __init i8042_platform_init(void) +{ + return -ENODEV; +} + +static inline void i8042_platform_exit(void) +{ +} +#endif /* !CONFIG_PCI */ + +#endif /* _I8042_SPARCIO_H */ -- cgit v1.2.3