1 // SPDX-License-Identifier: GPL-2.0-or-later
45  * mv88e6xxx_g2_scratch_get_bit - get a bit
57 	u8 val;  in mv88e6xxx_g2_scratch_get_bit()  local
60 	err = mv88e6xxx_g2_scratch_read(chip, reg, &val);  in mv88e6xxx_g2_scratch_get_bit()
64 	*set = !!(mask & val);  in mv88e6xxx_g2_scratch_get_bit()
70  * mv88e6xxx_g2_scratch_set_bit - set (or clear) a bit
84 	u8 val;  in mv88e6xxx_g2_scratch_set_bit()  local
87 	err = mv88e6xxx_g2_scratch_read(chip, reg, &val);  in mv88e6xxx_g2_scratch_set_bit()
92 		val |= mask;  in mv88e6xxx_g2_scratch_set_bit()
94 		val &= ~mask;  in mv88e6xxx_g2_scratch_set_bit()
96 	return mv88e6xxx_g2_scratch_write(chip, reg, val);  in mv88e6xxx_g2_scratch_set_bit()
100  * mv88e6352_g2_scratch_gpio_get_data - get data on gpio pin
102  * @pin: gpio index
107 					      unsigned int pin)  in mv88e6352_g2_scratch_gpio_get_data()  argument
109 	int val = 0;  in mv88e6352_g2_scratch_gpio_get_data()  local
114 					   pin, &val);  in mv88e6352_g2_scratch_gpio_get_data()
118 	return val;  in mv88e6352_g2_scratch_gpio_get_data()
122  * mv88e6352_g2_scratch_gpio_set_data - set data on gpio pin
124  * @pin: gpio index
128 					      unsigned int pin, int value)  in mv88e6352_g2_scratch_gpio_set_data()  argument
130 	u8 mask = (1 << (pin & 0x7));  in mv88e6352_g2_scratch_gpio_set_data()
131 	int offset = (pin / 8);  in mv88e6352_g2_scratch_gpio_set_data()
137 		chip->gpio_data[offset] |= mask;  in mv88e6352_g2_scratch_gpio_set_data()
139 		chip->gpio_data[offset] &= ~mask;  in mv88e6352_g2_scratch_gpio_set_data()
141 	return mv88e6xxx_g2_scratch_write(chip, reg, chip->gpio_data[offset]);  in mv88e6352_g2_scratch_gpio_set_data()
145  * mv88e6352_g2_scratch_gpio_get_dir - get direction of gpio pin
147  * @pin: gpio index
152 					     unsigned int pin)  in mv88e6352_g2_scratch_gpio_get_dir()  argument
154 	int val = 0;  in mv88e6352_g2_scratch_gpio_get_dir()  local
159 					   pin, &val);  in mv88e6352_g2_scratch_gpio_get_dir()
163 	return val;  in mv88e6352_g2_scratch_gpio_get_dir()
167  * mv88e6352_g2_scratch_gpio_set_dir - set direction of gpio pin
169  * @pin: gpio index
173 					     unsigned int pin, bool input)  in mv88e6352_g2_scratch_gpio_set_dir()  argument
180 					    pin, value);  in mv88e6352_g2_scratch_gpio_set_dir()
184  * mv88e6352_g2_scratch_gpio_get_pctl - get pin control setting
186  * @pin: gpio index
192 					      unsigned int pin, int *func)  in mv88e6352_g2_scratch_gpio_get_pctl()  argument
194 	int reg = MV88E6352_G2_SCRATCH_GPIO_PCTL0 + (pin / 2);  in mv88e6352_g2_scratch_gpio_get_pctl()
195 	int offset = (pin & 0x1) ? 4 : 0;  in mv88e6352_g2_scratch_gpio_get_pctl()
198 	u8 val;  in mv88e6352_g2_scratch_gpio_get_pctl()  local
200 	err = mv88e6xxx_g2_scratch_read(chip, reg, &val);  in mv88e6352_g2_scratch_gpio_get_pctl()
204 	*func = (val & mask) >> offset;  in mv88e6352_g2_scratch_gpio_get_pctl()
210  * mv88e6352_g2_scratch_gpio_set_pctl - set pin control setting
212  * @pin: gpio index
216 					      unsigned int pin, int func)  in mv88e6352_g2_scratch_gpio_set_pctl()  argument
218 	int reg = MV88E6352_G2_SCRATCH_GPIO_PCTL0 + (pin / 2);  in mv88e6352_g2_scratch_gpio_set_pctl()
219 	int offset = (pin & 0x1) ? 4 : 0;  in mv88e6352_g2_scratch_gpio_set_pctl()
222 	u8 val;  in mv88e6352_g2_scratch_gpio_set_pctl()  local
224 	err = mv88e6xxx_g2_scratch_read(chip, reg, &val);  in mv88e6352_g2_scratch_gpio_set_pctl()
228 	val = (val & ~mask) | ((func & mask) << offset);  in mv88e6352_g2_scratch_gpio_set_pctl()
230 	return mv88e6xxx_g2_scratch_write(chip, reg, val);  in mv88e6352_g2_scratch_gpio_set_pctl()
243  * mv88e6390_g2_scratch_gpio_set_smi - set gpio muxing for external smi
260 	u8 val;  in mv88e6390_g2_scratch_gpio_set_smi()  local
262 	err = mv88e6xxx_g2_scratch_read(chip, config_data2, &val);  in mv88e6390_g2_scratch_gpio_set_smi()
266 	p0_mode = val & MV88E6352_G2_SCRATCH_CONFIG_DATA2_P0_MODE_MASK;  in mv88e6390_g2_scratch_gpio_set_smi()
269 		return -EBUSY;  in mv88e6390_g2_scratch_gpio_set_smi()
271 	err = mv88e6xxx_g2_scratch_read(chip, config_data1, &val);  in mv88e6390_g2_scratch_gpio_set_smi()
275 	no_cpu = !!(val & MV88E6352_G2_SCRATCH_CONFIG_DATA1_NO_CPU);  in mv88e6390_g2_scratch_gpio_set_smi()
277 	err = mv88e6xxx_g2_scratch_read(chip, misc_cfg, &val);  in mv88e6390_g2_scratch_gpio_set_smi()
286 		val |= MV88E6352_G2_SCRATCH_MISC_CFG_NORMALSMI;  in mv88e6390_g2_scratch_gpio_set_smi()
288 		val &= ~MV88E6352_G2_SCRATCH_MISC_CFG_NORMALSMI;  in mv88e6390_g2_scratch_gpio_set_smi()
290 	return mv88e6xxx_g2_scratch_write(chip, misc_cfg, val);  in mv88e6390_g2_scratch_gpio_set_smi()
294  * mv88e6393x_g2_scratch_gpio_set_smi - set gpio muxing for external smi
299  * external SMI interface or as regular GPIO-s.
310 	u8 val;  in mv88e6393x_g2_scratch_gpio_set_smi()  local
312 	err = mv88e6xxx_g2_scratch_read(chip, misc_cfg, &val);  in mv88e6393x_g2_scratch_gpio_set_smi()
317 		val &= ~MV88E6352_G2_SCRATCH_MISC_CFG_NORMALSMI;  in mv88e6393x_g2_scratch_gpio_set_smi()
319 		val |= MV88E6352_G2_SCRATCH_MISC_CFG_NORMALSMI;  in mv88e6393x_g2_scratch_gpio_set_smi()
321 	return mv88e6xxx_g2_scratch_write(chip, misc_cfg, val);  in mv88e6393x_g2_scratch_gpio_set_smi()
325  * mv88e6352_g2_scratch_port_has_serdes - indicate if a port can have a serdes
330  * pin strapping. Returns negative error number, 0 if the port is not