12 #include <linux/gpio/driver.h>
15 #include <asm/octeon/octeon.h>
16 #include <asm/octeon/cvmx-gpio-defs.h>
22  * The address offset of the GPIO configuration register for a given
34 		return 8 * (offset - 16) + 0x100;  in bit_cfg_reg()
44 	struct octeon_gpio *gpio = gpiochip_get_data(chip);  in octeon_gpio_dir_in()  local
46 	cvmx_write_csr(gpio->register_base + bit_cfg_reg(offset), 0);  in octeon_gpio_dir_in()
53 	struct octeon_gpio *gpio = gpiochip_get_data(chip);  in octeon_gpio_set()  local
55 	u64 reg = gpio->register_base + (value ? TX_SET : TX_CLEAR);  in octeon_gpio_set()
64 	struct octeon_gpio *gpio = gpiochip_get_data(chip);  in octeon_gpio_dir_out()  local
72 	cvmx_write_csr(gpio->register_base + bit_cfg_reg(offset), cfgx.u64);  in octeon_gpio_dir_out()
78 	struct octeon_gpio *gpio = gpiochip_get_data(chip);  in octeon_gpio_get()  local
79 	u64 read_bits = cvmx_read_csr(gpio->register_base + RX_DAT);  in octeon_gpio_get()
86 	struct octeon_gpio *gpio;  in octeon_gpio_probe()  local
91 	gpio = devm_kzalloc(&pdev->dev, sizeof(*gpio), GFP_KERNEL);  in octeon_gpio_probe()
92 	if (!gpio)  in octeon_gpio_probe()
93 		return -ENOMEM;  in octeon_gpio_probe()
94 	chip = &gpio->chip;  in octeon_gpio_probe()
100 	gpio->register_base = (u64)reg_base;  in octeon_gpio_probe()
101 	pdev->dev.platform_data = chip;  in octeon_gpio_probe()
102 	chip->label = "octeon-gpio";  in octeon_gpio_probe()
103 	chip->parent = &pdev->dev;  in octeon_gpio_probe()
104 	chip->owner = THIS_MODULE;  in octeon_gpio_probe()
105 	chip->base = 0;  in octeon_gpio_probe()
106 	chip->can_sleep = false;  in octeon_gpio_probe()
107 	chip->ngpio = 20;  in octeon_gpio_probe()
108 	chip->direction_input = octeon_gpio_dir_in;  in octeon_gpio_probe()
109 	chip->get = octeon_gpio_get;  in octeon_gpio_probe()
110 	chip->direction_output = octeon_gpio_dir_out;  in octeon_gpio_probe()
111 	chip->set = octeon_gpio_set;  in octeon_gpio_probe()
112 	err = devm_gpiochip_add_data(&pdev->dev, chip, gpio);  in octeon_gpio_probe()
116 	dev_info(&pdev->dev, "OCTEON GPIO driver probed.\n");  in octeon_gpio_probe()
122 		.compatible = "cavium,octeon-3860-gpio",
138 MODULE_DESCRIPTION("Cavium Inc. OCTEON GPIO Driver");