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
97 static void meson_calc_reg_and_bit(struct meson_bank *bank, unsigned int pin,
103 	*bit = (desc->bit + pin - bank->first) * meson_bit_strides[reg_type];
180 				      unsigned int pin,
188 	ret = meson_get_bank(pc, pin, &bank);
192 	meson_calc_reg_and_bit(bank, pin, reg_type, &reg, &bit);
198 				      unsigned int pin,
205 	ret = meson_get_bank(pc, pin, &bank);
209 	meson_calc_reg_and_bit(bank, pin, reg_type, &reg, &bit);
218 				    unsigned int pin,
221 	return meson_pinconf_set_gpio_bit(pc, pin, MESON_REG_DIR, !out);
225 				    unsigned int pin)
227 	int ret = meson_pinconf_get_gpio_bit(pc, pin, MESON_REG_DIR);
236 				   unsigned int pin,
239 	return meson_pinconf_set_gpio_bit(pc, pin, MESON_REG_OUT, high);
243 				   unsigned int pin)
245 	return meson_pinconf_get_gpio_bit(pc, pin, MESON_REG_OUT);
249 					  unsigned int pin,
254 	ret = meson_pinconf_set_output(pc, pin, true);
258 	return meson_pinconf_set_drive(pc, pin, high);
262 				      unsigned int pin)
268 	ret = meson_get_bank(pc, pin, &bank);
272 	meson_calc_reg_and_bit(bank, pin, MESON_REG_PULLEN, &reg, &bit);
280 static int meson_pinconf_enable_bias(struct meson_pinctrl *pc, unsigned int pin,
287 	ret = meson_get_bank(pc, pin, &bank);
291 	meson_calc_reg_and_bit(bank, pin, MESON_REG_PULL, &reg, &bit);
299 	meson_calc_reg_and_bit(bank, pin, MESON_REG_PULLEN, &reg, &bit);
308 					    unsigned int pin,
320 	ret = meson_get_bank(pc, pin, &bank);
324 	meson_calc_reg_and_bit(bank, pin, MESON_REG_DS, &reg, &bit);
336 			      "pin %u: invalid drive-strength : %d , default to 4mA\n",
337 			      pin, drive_strength_ua);
348 static int meson_pinconf_set(struct pinctrl_dev *pcdev, unsigned int pin,
372 			ret = meson_pinconf_disable_bias(pc, pin);
375 			ret = meson_pinconf_enable_bias(pc, pin, true);
378 			ret = meson_pinconf_enable_bias(pc, pin, false);
381 			ret = meson_pinconf_set_drive_strength(pc, pin, arg);
384 			ret = meson_pinconf_set_output(pc, pin, arg);
387 			ret = meson_pinconf_set_output_drive(pc, pin, arg);
400 static int meson_pinconf_get_pull(struct meson_pinctrl *pc, unsigned int pin)
406 	ret = meson_get_bank(pc, pin, &bank);
410 	meson_calc_reg_and_bit(bank, pin, MESON_REG_PULLEN, &reg, &bit);
419 		meson_calc_reg_and_bit(bank, pin, MESON_REG_PULL, &reg, &bit);
435 					    unsigned int pin,
446 	ret = meson_get_bank(pc, pin, &bank);
450 	meson_calc_reg_and_bit(bank, pin, MESON_REG_DS, &reg, &bit);
476 static int meson_pinconf_get(struct pinctrl_dev *pcdev, unsigned int pin,
488 		if (meson_pinconf_get_pull(pc, pin) == param)
494 		ret = meson_pinconf_get_drive_strength(pc, pin, &arg);
499 		ret = meson_pinconf_get_output(pc, pin);
505 		ret = meson_pinconf_get_output(pc, pin);
509 		ret = meson_pinconf_get_drive(pc, pin);
521 	dev_dbg(pc->dev, "pinconf for pin %u is %lu\n", pin, *config);