pinctrl/meson/pinctrl-meson.c

18  * For each pin controller there are 4 different register ranges that
20  *  1) pin muxing
64  * meson_get_bank() - find the bank containing a given pin
67  * @pin:	the pin number
72 static int meson_get_bank(struct meson_pinctrl *pc, unsigned int pin,
78 		if (pin >= pc->data->banks[i].first &&
79 		    pin <= pc->data->banks[i].last) {
89  * meson_calc_reg_and_bit() - calculate register and bit for a pin
91  * @bank:	the bank containing the pin
92  * @pin:	the pin number
98 				   unsigned int pin,
104 	*bit = (desc->bit + pin - bank->first) * meson_bit_strides[reg_type];
181 				      unsigned int pin,
189 	ret = meson_get_bank(pc, pin, &bank);
193 	meson_calc_reg_and_bit(bank, pin, reg_type, &reg, &bit);
199 				      unsigned int pin,
206 	ret = meson_get_bank(pc, pin, &bank);
210 	meson_calc_reg_and_bit(bank, pin, reg_type, &reg, &bit);
219 				    unsigned int pin,
222 	return meson_pinconf_set_gpio_bit(pc, pin, MESON_REG_DIR, !out);
226 				    unsigned int pin)
228 	int ret = meson_pinconf_get_gpio_bit(pc, pin, MESON_REG_DIR);
237 				   unsigned int pin,
240 	return meson_pinconf_set_gpio_bit(pc, pin, MESON_REG_OUT, high);
244 				   unsigned int pin)
246 	return meson_pinconf_get_gpio_bit(pc, pin, MESON_REG_OUT);
250 					  unsigned int pin,
255 	ret = meson_pinconf_set_output(pc, pin, true);
259 	return meson_pinconf_set_drive(pc, pin, high);
263 				      unsigned int pin)
269 	ret = meson_get_bank(pc, pin, &bank);
273 	meson_calc_reg_and_bit(bank, pin, MESON_REG_PULLEN, &reg, &bit);
281 static int meson_pinconf_enable_bias(struct meson_pinctrl *pc, unsigned int pin,
288 	ret = meson_get_bank(pc, pin, &bank);
292 	meson_calc_reg_and_bit(bank, pin, MESON_REG_PULL, &reg, &bit);
300 	meson_calc_reg_and_bit(bank, pin, MESON_REG_PULLEN, &reg, &bit);
309 					    unsigned int pin,
321 	ret = meson_get_bank(pc, pin, &bank);
325 	meson_calc_reg_and_bit(bank, pin, MESON_REG_DS, &reg, &bit);
337 			      "pin %u: invalid drive-strength : %d , default to 4mA\n",
338 			      pin, drive_strength_ua);
349 static int meson_pinconf_set(struct pinctrl_dev *pcdev, unsigned int pin,
373 			ret = meson_pinconf_disable_bias(pc, pin);
376 			ret = meson_pinconf_enable_bias(pc, pin, true);
379 			ret = meson_pinconf_enable_bias(pc, pin, false);
382 			ret = meson_pinconf_set_drive_strength(pc, pin, arg);
385 			ret = meson_pinconf_set_output(pc, pin, arg);
388 			ret = meson_pinconf_set_output_drive(pc, pin, arg);
401 static int meson_pinconf_get_pull(struct meson_pinctrl *pc, unsigned int pin)
407 	ret = meson_get_bank(pc, pin, &bank);
411 	meson_calc_reg_and_bit(bank, pin, MESON_REG_PULLEN, &reg, &bit);
420 		meson_calc_reg_and_bit(bank, pin, MESON_REG_PULL, &reg, &bit);
436 					    unsigned int pin,
447 	ret = meson_get_bank(pc, pin, &bank);
451 	meson_calc_reg_and_bit(bank, pin, MESON_REG_DS, &reg, &bit);
477 static int meson_pinconf_get(struct pinctrl_dev *pcdev, unsigned int pin,
489 		if (meson_pinconf_get_pull(pc, pin) == param)
495 		ret = meson_pinconf_get_drive_strength(pc, pin, &arg);
500 		ret = meson_pinconf_get_output(pc, pin);
506 		ret = meson_pinconf_get_output(pc, pin);
510 		ret = meson_pinconf_get_drive(pc, pin);
522 	dev_dbg(pc->dev, "pinconf for pin %u is %lu\n", pin, *config);