xref: /linux/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c (revision 047cd9a6bd8a2a73e8d92eb97a1b50c7bcd59279)
1a1a503a8SSean Wang // SPDX-License-Identifier: GPL-2.0
2a1a503a8SSean Wang /*
3a1a503a8SSean Wang  * Copyright (C) 2018 MediaTek Inc.
4a1a503a8SSean Wang  *
5a1a503a8SSean Wang  * Author: Sean Wang <sean.wang@mediatek.com>
6a1a503a8SSean Wang  *
7a1a503a8SSean Wang  */
8a1a503a8SSean Wang 
9cafe19dbSLight Hsieh #include <dt-bindings/pinctrl/mt65xx.h>
10a1a503a8SSean Wang #include <linux/device.h>
11a1a503a8SSean Wang #include <linux/err.h>
1222d7fe49SLinus Walleij #include <linux/gpio/driver.h>
1389132dd8SSean Wang #include <linux/platform_device.h>
14a1a503a8SSean Wang #include <linux/io.h>
158174a851SLight Hsieh #include <linux/module.h>
1689132dd8SSean Wang #include <linux/of_irq.h>
17a1a503a8SSean Wang 
1889132dd8SSean Wang #include "mtk-eint.h"
19a1a503a8SSean Wang #include "pinctrl-mtk-common-v2.h"
20a1a503a8SSean Wang 
21c2832197SSean Wang /**
22c2832197SSean Wang  * struct mtk_drive_desc - the structure that holds the information
23c2832197SSean Wang  *			    of the driving current
24c2832197SSean Wang  * @min:	the minimum current of this group
25c2832197SSean Wang  * @max:	the maximum current of this group
26c2832197SSean Wang  * @step:	the step current of this group
27c2832197SSean Wang  * @scal:	the weight factor
28c2832197SSean Wang  *
29c2832197SSean Wang  * formula: output = ((input) / step - 1) * scal
30c2832197SSean Wang  */
31c2832197SSean Wang struct mtk_drive_desc {
32c2832197SSean Wang 	u8 min;
33c2832197SSean Wang 	u8 max;
34c2832197SSean Wang 	u8 step;
35c2832197SSean Wang 	u8 scal;
36c2832197SSean Wang };
37c2832197SSean Wang 
38c2832197SSean Wang /* The groups of drive strength */
3907c6b037SWei Yongjun static const struct mtk_drive_desc mtk_drive[] = {
40c2832197SSean Wang 	[DRV_GRP0] = { 4, 16, 4, 1 },
41c2832197SSean Wang 	[DRV_GRP1] = { 4, 16, 4, 2 },
42c2832197SSean Wang 	[DRV_GRP2] = { 2, 8, 2, 1 },
43c2832197SSean Wang 	[DRV_GRP3] = { 2, 8, 2, 2 },
44c2832197SSean Wang 	[DRV_GRP4] = { 2, 16, 2, 1 },
45c2832197SSean Wang };
46c2832197SSean Wang 
472bc47dfeSSean Wang static void mtk_w32(struct mtk_pinctrl *pctl, u8 i, u32 reg, u32 val)
48a1a503a8SSean Wang {
492bc47dfeSSean Wang 	writel_relaxed(val, pctl->base[i] + reg);
50a1a503a8SSean Wang }
51a1a503a8SSean Wang 
522bc47dfeSSean Wang static u32 mtk_r32(struct mtk_pinctrl *pctl, u8 i, u32 reg)
53a1a503a8SSean Wang {
542bc47dfeSSean Wang 	return readl_relaxed(pctl->base[i] + reg);
55a1a503a8SSean Wang }
56a1a503a8SSean Wang 
572bc47dfeSSean Wang void mtk_rmw(struct mtk_pinctrl *pctl, u8 i, u32 reg, u32 mask, u32 set)
58a1a503a8SSean Wang {
59a1a503a8SSean Wang 	u32 val;
60a1a503a8SSean Wang 
612bc47dfeSSean Wang 	val = mtk_r32(pctl, i, reg);
62a1a503a8SSean Wang 	val &= ~mask;
63a1a503a8SSean Wang 	val |= set;
642bc47dfeSSean Wang 	mtk_w32(pctl, i, reg, val);
65a1a503a8SSean Wang }
66a1a503a8SSean Wang 
67ea051eb3SSean Wang static int mtk_hw_pin_field_lookup(struct mtk_pinctrl *hw,
68ea051eb3SSean Wang 				   const struct mtk_pin_desc *desc,
699d9b171cSSean Wang 				   int field, struct mtk_pin_field *pfd)
70a1a503a8SSean Wang {
7186ecb7d6SYueHaibing 	const struct mtk_pin_field_calc *c;
729d9b171cSSean Wang 	const struct mtk_pin_reg_calc *rc;
733de7deefSLight Hsieh 	int start = 0, end, check;
743de7deefSLight Hsieh 	bool found = false;
75a1a503a8SSean Wang 	u32 bits;
76a1a503a8SSean Wang 
779d9b171cSSean Wang 	if (hw->soc->reg_cal && hw->soc->reg_cal[field].range) {
789d9b171cSSean Wang 		rc = &hw->soc->reg_cal[field];
799d9b171cSSean Wang 	} else {
809d9b171cSSean Wang 		dev_dbg(hw->dev,
813de7deefSLight Hsieh 			"Not support field %d for this soc\n", field);
829d9b171cSSean Wang 		return -ENOTSUPP;
839d9b171cSSean Wang 	}
849d9b171cSSean Wang 
853de7deefSLight Hsieh 	end = rc->nranges - 1;
86a1a503a8SSean Wang 
873de7deefSLight Hsieh 	while (start <= end) {
883de7deefSLight Hsieh 		check = (start + end) >> 1;
893de7deefSLight Hsieh 		if (desc->number >= rc->range[check].s_pin
903de7deefSLight Hsieh 		 && desc->number <= rc->range[check].e_pin) {
913de7deefSLight Hsieh 			found = true;
92a1a503a8SSean Wang 			break;
933de7deefSLight Hsieh 		} else if (start == end)
943de7deefSLight Hsieh 			break;
953de7deefSLight Hsieh 		else if (desc->number < rc->range[check].s_pin)
963de7deefSLight Hsieh 			end = check - 1;
973de7deefSLight Hsieh 		else
983de7deefSLight Hsieh 			start = check + 1;
99a1a503a8SSean Wang 	}
100a1a503a8SSean Wang 
1013de7deefSLight Hsieh 	if (!found) {
1029d9b171cSSean Wang 		dev_dbg(hw->dev, "Not support field %d for pin = %d (%s)\n",
1039d9b171cSSean Wang 			field, desc->number, desc->name);
1049d9b171cSSean Wang 		return -ENOTSUPP;
105a1a503a8SSean Wang 	}
106a1a503a8SSean Wang 
1073de7deefSLight Hsieh 	c = rc->range + check;
1083de7deefSLight Hsieh 
1092bc47dfeSSean Wang 	if (c->i_base > hw->nbase - 1) {
1109d9b171cSSean Wang 		dev_err(hw->dev,
1119d9b171cSSean Wang 			"Invalid base for field %d for pin = %d (%s)\n",
1129d9b171cSSean Wang 			field, desc->number, desc->name);
1132bc47dfeSSean Wang 		return -EINVAL;
1142bc47dfeSSean Wang 	}
1152bc47dfeSSean Wang 
116b906faf7SSean Wang 	/* Calculated bits as the overall offset the pin is located at,
117b906faf7SSean Wang 	 * if c->fixed is held, that determines the all the pins in the
118b906faf7SSean Wang 	 * range use the same field with the s_pin.
119b906faf7SSean Wang 	 */
120ea051eb3SSean Wang 	bits = c->fixed ? c->s_bit : c->s_bit +
121ea051eb3SSean Wang 	       (desc->number - c->s_pin) * (c->x_bits);
122a1a503a8SSean Wang 
123b906faf7SSean Wang 	/* Fill pfd from bits. For example 32-bit register applied is assumed
124b906faf7SSean Wang 	 * when c->sz_reg is equal to 32.
125b906faf7SSean Wang 	 */
1262bc47dfeSSean Wang 	pfd->index = c->i_base;
127b906faf7SSean Wang 	pfd->offset = c->s_addr + c->x_addrs * (bits / c->sz_reg);
128b906faf7SSean Wang 	pfd->bitpos = bits % c->sz_reg;
129a1a503a8SSean Wang 	pfd->mask = (1 << c->x_bits) - 1;
130a1a503a8SSean Wang 
131a1a503a8SSean Wang 	/* pfd->next is used for indicating that bit wrapping-around happens
132a1a503a8SSean Wang 	 * which requires the manipulation for bit 0 starting in the next
133a1a503a8SSean Wang 	 * register to form the complete field read/write.
134a1a503a8SSean Wang 	 */
135b906faf7SSean Wang 	pfd->next = pfd->bitpos + c->x_bits > c->sz_reg ? c->x_addrs : 0;
136a1a503a8SSean Wang 
137a1a503a8SSean Wang 	return 0;
138a1a503a8SSean Wang }
139a1a503a8SSean Wang 
140ea051eb3SSean Wang static int mtk_hw_pin_field_get(struct mtk_pinctrl *hw,
141ea051eb3SSean Wang 				const struct mtk_pin_desc *desc,
142a1a503a8SSean Wang 				int field, struct mtk_pin_field *pfd)
143a1a503a8SSean Wang {
144a1a503a8SSean Wang 	if (field < 0 || field >= PINCTRL_PIN_REG_MAX) {
145a1a503a8SSean Wang 		dev_err(hw->dev, "Invalid Field %d\n", field);
146a1a503a8SSean Wang 		return -EINVAL;
147a1a503a8SSean Wang 	}
148a1a503a8SSean Wang 
1499d9b171cSSean Wang 	return mtk_hw_pin_field_lookup(hw, desc, field, pfd);
150a1a503a8SSean Wang }
151a1a503a8SSean Wang 
152a1a503a8SSean Wang static void mtk_hw_bits_part(struct mtk_pin_field *pf, int *h, int *l)
153a1a503a8SSean Wang {
154a1a503a8SSean Wang 	*l = 32 - pf->bitpos;
155a1a503a8SSean Wang 	*h = get_count_order(pf->mask) - *l;
156a1a503a8SSean Wang }
157a1a503a8SSean Wang 
158a1a503a8SSean Wang static void mtk_hw_write_cross_field(struct mtk_pinctrl *hw,
159a1a503a8SSean Wang 				     struct mtk_pin_field *pf, int value)
160a1a503a8SSean Wang {
161a1a503a8SSean Wang 	int nbits_l, nbits_h;
162a1a503a8SSean Wang 
163a1a503a8SSean Wang 	mtk_hw_bits_part(pf, &nbits_h, &nbits_l);
164a1a503a8SSean Wang 
1652bc47dfeSSean Wang 	mtk_rmw(hw, pf->index, pf->offset, pf->mask << pf->bitpos,
166a1a503a8SSean Wang 		(value & pf->mask) << pf->bitpos);
167a1a503a8SSean Wang 
1682bc47dfeSSean Wang 	mtk_rmw(hw, pf->index, pf->offset + pf->next, BIT(nbits_h) - 1,
169a1a503a8SSean Wang 		(value & pf->mask) >> nbits_l);
170a1a503a8SSean Wang }
171a1a503a8SSean Wang 
172a1a503a8SSean Wang static void mtk_hw_read_cross_field(struct mtk_pinctrl *hw,
173a1a503a8SSean Wang 				    struct mtk_pin_field *pf, int *value)
174a1a503a8SSean Wang {
175a1a503a8SSean Wang 	int nbits_l, nbits_h, h, l;
176a1a503a8SSean Wang 
177a1a503a8SSean Wang 	mtk_hw_bits_part(pf, &nbits_h, &nbits_l);
178a1a503a8SSean Wang 
1792bc47dfeSSean Wang 	l  = (mtk_r32(hw, pf->index, pf->offset)
1802bc47dfeSSean Wang 	      >> pf->bitpos) & (BIT(nbits_l) - 1);
1812bc47dfeSSean Wang 	h  = (mtk_r32(hw, pf->index, pf->offset + pf->next))
1822bc47dfeSSean Wang 	      & (BIT(nbits_h) - 1);
183a1a503a8SSean Wang 
184a1a503a8SSean Wang 	*value = (h << nbits_l) | l;
185a1a503a8SSean Wang }
186a1a503a8SSean Wang 
187ea051eb3SSean Wang int mtk_hw_set_value(struct mtk_pinctrl *hw, const struct mtk_pin_desc *desc,
188ea051eb3SSean Wang 		     int field, int value)
189a1a503a8SSean Wang {
190a1a503a8SSean Wang 	struct mtk_pin_field pf;
191a1a503a8SSean Wang 	int err;
192a1a503a8SSean Wang 
193ea051eb3SSean Wang 	err = mtk_hw_pin_field_get(hw, desc, field, &pf);
194a1a503a8SSean Wang 	if (err)
195a1a503a8SSean Wang 		return err;
196a1a503a8SSean Wang 
1973de7deefSLight Hsieh 	if (value < 0 || value > pf.mask)
1983de7deefSLight Hsieh 		return -EINVAL;
1993de7deefSLight Hsieh 
200a1a503a8SSean Wang 	if (!pf.next)
2012bc47dfeSSean Wang 		mtk_rmw(hw, pf.index, pf.offset, pf.mask << pf.bitpos,
202a1a503a8SSean Wang 			(value & pf.mask) << pf.bitpos);
203a1a503a8SSean Wang 	else
204a1a503a8SSean Wang 		mtk_hw_write_cross_field(hw, &pf, value);
205a1a503a8SSean Wang 
206a1a503a8SSean Wang 	return 0;
207a1a503a8SSean Wang }
2088174a851SLight Hsieh EXPORT_SYMBOL_GPL(mtk_hw_set_value);
209a1a503a8SSean Wang 
210ea051eb3SSean Wang int mtk_hw_get_value(struct mtk_pinctrl *hw, const struct mtk_pin_desc *desc,
211ea051eb3SSean Wang 		     int field, int *value)
212a1a503a8SSean Wang {
213a1a503a8SSean Wang 	struct mtk_pin_field pf;
214a1a503a8SSean Wang 	int err;
215a1a503a8SSean Wang 
216ea051eb3SSean Wang 	err = mtk_hw_pin_field_get(hw, desc, field, &pf);
217a1a503a8SSean Wang 	if (err)
218a1a503a8SSean Wang 		return err;
219a1a503a8SSean Wang 
220a1a503a8SSean Wang 	if (!pf.next)
2212bc47dfeSSean Wang 		*value = (mtk_r32(hw, pf.index, pf.offset)
2222bc47dfeSSean Wang 			  >> pf.bitpos) & pf.mask;
223a1a503a8SSean Wang 	else
224a1a503a8SSean Wang 		mtk_hw_read_cross_field(hw, &pf, value);
225a1a503a8SSean Wang 
226a1a503a8SSean Wang 	return 0;
227a1a503a8SSean Wang }
2288174a851SLight Hsieh EXPORT_SYMBOL_GPL(mtk_hw_get_value);
229c2832197SSean Wang 
23089132dd8SSean Wang static int mtk_xt_find_eint_num(struct mtk_pinctrl *hw, unsigned long eint_n)
23189132dd8SSean Wang {
23289132dd8SSean Wang 	const struct mtk_pin_desc *desc;
23389132dd8SSean Wang 	int i = 0;
23489132dd8SSean Wang 
23589132dd8SSean Wang 	desc = (const struct mtk_pin_desc *)hw->soc->pins;
23689132dd8SSean Wang 
23789132dd8SSean Wang 	while (i < hw->soc->npins) {
23889132dd8SSean Wang 		if (desc[i].eint.eint_n == eint_n)
23989132dd8SSean Wang 			return desc[i].number;
24089132dd8SSean Wang 		i++;
24189132dd8SSean Wang 	}
24289132dd8SSean Wang 
24389132dd8SSean Wang 	return EINT_NA;
24489132dd8SSean Wang }
24589132dd8SSean Wang 
246edd54646SHanks Chen /*
247edd54646SHanks Chen  * Virtual GPIO only used inside SOC and not being exported to outside SOC.
248edd54646SHanks Chen  * Some modules use virtual GPIO as eint (e.g. pmif or usb).
249edd54646SHanks Chen  * In MTK platform, external interrupt (EINT) and GPIO is 1-1 mapping
250edd54646SHanks Chen  * and we can set GPIO as eint.
251edd54646SHanks Chen  * But some modules use specific eint which doesn't have real GPIO pin.
252edd54646SHanks Chen  * So we use virtual GPIO to map it.
253edd54646SHanks Chen  */
254edd54646SHanks Chen 
255edd54646SHanks Chen bool mtk_is_virt_gpio(struct mtk_pinctrl *hw, unsigned int gpio_n)
256edd54646SHanks Chen {
257edd54646SHanks Chen 	const struct mtk_pin_desc *desc;
258edd54646SHanks Chen 	bool virt_gpio = false;
259edd54646SHanks Chen 
260edd54646SHanks Chen 	desc = (const struct mtk_pin_desc *)&hw->soc->pins[gpio_n];
261edd54646SHanks Chen 
262edd54646SHanks Chen 	if (desc->funcs && !desc->funcs[desc->eint.eint_m].name)
263edd54646SHanks Chen 		virt_gpio = true;
264edd54646SHanks Chen 
265edd54646SHanks Chen 	return virt_gpio;
266edd54646SHanks Chen }
267*047cd9a6SRandy Dunlap EXPORT_SYMBOL_GPL(mtk_is_virt_gpio);
268edd54646SHanks Chen 
26989132dd8SSean Wang static int mtk_xt_get_gpio_n(void *data, unsigned long eint_n,
27089132dd8SSean Wang 			     unsigned int *gpio_n,
27189132dd8SSean Wang 			     struct gpio_chip **gpio_chip)
27289132dd8SSean Wang {
27389132dd8SSean Wang 	struct mtk_pinctrl *hw = (struct mtk_pinctrl *)data;
27489132dd8SSean Wang 	const struct mtk_pin_desc *desc;
27589132dd8SSean Wang 
27689132dd8SSean Wang 	desc = (const struct mtk_pin_desc *)hw->soc->pins;
27789132dd8SSean Wang 	*gpio_chip = &hw->chip;
27889132dd8SSean Wang 
27989132dd8SSean Wang 	/* Be greedy to guess first gpio_n is equal to eint_n */
28089132dd8SSean Wang 	if (desc[eint_n].eint.eint_n == eint_n)
28189132dd8SSean Wang 		*gpio_n = eint_n;
28289132dd8SSean Wang 	else
28389132dd8SSean Wang 		*gpio_n = mtk_xt_find_eint_num(hw, eint_n);
28489132dd8SSean Wang 
28589132dd8SSean Wang 	return *gpio_n == EINT_NA ? -EINVAL : 0;
28689132dd8SSean Wang }
28789132dd8SSean Wang 
28889132dd8SSean Wang static int mtk_xt_get_gpio_state(void *data, unsigned long eint_n)
28989132dd8SSean Wang {
29089132dd8SSean Wang 	struct mtk_pinctrl *hw = (struct mtk_pinctrl *)data;
29189132dd8SSean Wang 	const struct mtk_pin_desc *desc;
29289132dd8SSean Wang 	struct gpio_chip *gpio_chip;
29389132dd8SSean Wang 	unsigned int gpio_n;
29489132dd8SSean Wang 	int value, err;
29589132dd8SSean Wang 
29689132dd8SSean Wang 	err = mtk_xt_get_gpio_n(hw, eint_n, &gpio_n, &gpio_chip);
29789132dd8SSean Wang 	if (err)
29889132dd8SSean Wang 		return err;
29989132dd8SSean Wang 
30089132dd8SSean Wang 	desc = (const struct mtk_pin_desc *)&hw->soc->pins[gpio_n];
30189132dd8SSean Wang 
30289132dd8SSean Wang 	err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_DI, &value);
30389132dd8SSean Wang 	if (err)
30489132dd8SSean Wang 		return err;
30589132dd8SSean Wang 
30689132dd8SSean Wang 	return !!value;
30789132dd8SSean Wang }
30889132dd8SSean Wang 
30989132dd8SSean Wang static int mtk_xt_set_gpio_as_eint(void *data, unsigned long eint_n)
31089132dd8SSean Wang {
31189132dd8SSean Wang 	struct mtk_pinctrl *hw = (struct mtk_pinctrl *)data;
31289132dd8SSean Wang 	const struct mtk_pin_desc *desc;
31389132dd8SSean Wang 	struct gpio_chip *gpio_chip;
31489132dd8SSean Wang 	unsigned int gpio_n;
31589132dd8SSean Wang 	int err;
31689132dd8SSean Wang 
31789132dd8SSean Wang 	err = mtk_xt_get_gpio_n(hw, eint_n, &gpio_n, &gpio_chip);
31889132dd8SSean Wang 	if (err)
31989132dd8SSean Wang 		return err;
32089132dd8SSean Wang 
321edd54646SHanks Chen 	if (mtk_is_virt_gpio(hw, gpio_n))
322edd54646SHanks Chen 		return 0;
323edd54646SHanks Chen 
32489132dd8SSean Wang 	desc = (const struct mtk_pin_desc *)&hw->soc->pins[gpio_n];
32589132dd8SSean Wang 
32689132dd8SSean Wang 	err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_MODE,
32789132dd8SSean Wang 			       desc->eint.eint_m);
32889132dd8SSean Wang 	if (err)
32989132dd8SSean Wang 		return err;
33089132dd8SSean Wang 
33189132dd8SSean Wang 	err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_DIR, MTK_INPUT);
33289132dd8SSean Wang 	if (err)
33389132dd8SSean Wang 		return err;
33489132dd8SSean Wang 
33589132dd8SSean Wang 	err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_SMT, MTK_ENABLE);
3366e737a4eSchuanjia.liu 	/* SMT is supposed to be supported by every real GPIO and doesn't
3376e737a4eSchuanjia.liu 	 * support virtual GPIOs, so the extra condition err != -ENOTSUPP
3386e737a4eSchuanjia.liu 	 * is just for adding EINT support to these virtual GPIOs. It should
3396e737a4eSchuanjia.liu 	 * add an extra flag in the pin descriptor when more pins with
3406e737a4eSchuanjia.liu 	 * distinctive characteristic come out.
3416e737a4eSchuanjia.liu 	 */
3426e737a4eSchuanjia.liu 	if (err && err != -ENOTSUPP)
34389132dd8SSean Wang 		return err;
34489132dd8SSean Wang 
34589132dd8SSean Wang 	return 0;
34689132dd8SSean Wang }
34789132dd8SSean Wang 
34889132dd8SSean Wang static const struct mtk_eint_xt mtk_eint_xt = {
34989132dd8SSean Wang 	.get_gpio_n = mtk_xt_get_gpio_n,
35089132dd8SSean Wang 	.get_gpio_state = mtk_xt_get_gpio_state,
35189132dd8SSean Wang 	.set_gpio_as_eint = mtk_xt_set_gpio_as_eint,
35289132dd8SSean Wang };
35389132dd8SSean Wang 
35489132dd8SSean Wang int mtk_build_eint(struct mtk_pinctrl *hw, struct platform_device *pdev)
35589132dd8SSean Wang {
35689132dd8SSean Wang 	struct device_node *np = pdev->dev.of_node;
35789132dd8SSean Wang 	struct resource *res;
35889132dd8SSean Wang 
35989132dd8SSean Wang 	if (!IS_ENABLED(CONFIG_EINT_MTK))
36089132dd8SSean Wang 		return 0;
36189132dd8SSean Wang 
36289132dd8SSean Wang 	if (!of_property_read_bool(np, "interrupt-controller"))
36389132dd8SSean Wang 		return -ENODEV;
36489132dd8SSean Wang 
36589132dd8SSean Wang 	hw->eint = devm_kzalloc(hw->dev, sizeof(*hw->eint), GFP_KERNEL);
36689132dd8SSean Wang 	if (!hw->eint)
36789132dd8SSean Wang 		return -ENOMEM;
36889132dd8SSean Wang 
36989132dd8SSean Wang 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "eint");
37089132dd8SSean Wang 	if (!res) {
37189132dd8SSean Wang 		dev_err(&pdev->dev, "Unable to get eint resource\n");
37289132dd8SSean Wang 		return -ENODEV;
37389132dd8SSean Wang 	}
37489132dd8SSean Wang 
37589132dd8SSean Wang 	hw->eint->base = devm_ioremap_resource(&pdev->dev, res);
37689132dd8SSean Wang 	if (IS_ERR(hw->eint->base))
37789132dd8SSean Wang 		return PTR_ERR(hw->eint->base);
37889132dd8SSean Wang 
37989132dd8SSean Wang 	hw->eint->irq = irq_of_parse_and_map(np, 0);
38089132dd8SSean Wang 	if (!hw->eint->irq)
38189132dd8SSean Wang 		return -EINVAL;
38289132dd8SSean Wang 
38389132dd8SSean Wang 	if (!hw->soc->eint_hw)
38489132dd8SSean Wang 		return -ENODEV;
38589132dd8SSean Wang 
38689132dd8SSean Wang 	hw->eint->dev = &pdev->dev;
38789132dd8SSean Wang 	hw->eint->hw = hw->soc->eint_hw;
38889132dd8SSean Wang 	hw->eint->pctl = hw;
38989132dd8SSean Wang 	hw->eint->gpio_xlate = &mtk_eint_xt;
39089132dd8SSean Wang 
39189132dd8SSean Wang 	return mtk_eint_do_init(hw->eint);
39289132dd8SSean Wang }
3938174a851SLight Hsieh EXPORT_SYMBOL_GPL(mtk_build_eint);
39489132dd8SSean Wang 
3959afc305bSSean Wang /* Revision 0 */
39685430152SSean Wang int mtk_pinconf_bias_disable_set(struct mtk_pinctrl *hw,
39785430152SSean Wang 				 const struct mtk_pin_desc *desc)
39885430152SSean Wang {
39985430152SSean Wang 	int err;
40085430152SSean Wang 
401ea051eb3SSean Wang 	err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PU,
40285430152SSean Wang 			       MTK_DISABLE);
40385430152SSean Wang 	if (err)
40485430152SSean Wang 		return err;
40585430152SSean Wang 
406ea051eb3SSean Wang 	err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PD,
40785430152SSean Wang 			       MTK_DISABLE);
40885430152SSean Wang 	if (err)
40985430152SSean Wang 		return err;
41085430152SSean Wang 
41185430152SSean Wang 	return 0;
41285430152SSean Wang }
4138174a851SLight Hsieh EXPORT_SYMBOL_GPL(mtk_pinconf_bias_disable_set);
41485430152SSean Wang 
41585430152SSean Wang int mtk_pinconf_bias_disable_get(struct mtk_pinctrl *hw,
41685430152SSean Wang 				 const struct mtk_pin_desc *desc, int *res)
41785430152SSean Wang {
41885430152SSean Wang 	int v, v2;
41985430152SSean Wang 	int err;
42085430152SSean Wang 
421ea051eb3SSean Wang 	err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PU, &v);
42285430152SSean Wang 	if (err)
42385430152SSean Wang 		return err;
42485430152SSean Wang 
425ea051eb3SSean Wang 	err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PD, &v2);
42685430152SSean Wang 	if (err)
42785430152SSean Wang 		return err;
42885430152SSean Wang 
42985430152SSean Wang 	if (v == MTK_ENABLE || v2 == MTK_ENABLE)
43085430152SSean Wang 		return -EINVAL;
43185430152SSean Wang 
43285430152SSean Wang 	*res = 1;
43385430152SSean Wang 
43485430152SSean Wang 	return 0;
43585430152SSean Wang }
4368174a851SLight Hsieh EXPORT_SYMBOL_GPL(mtk_pinconf_bias_disable_get);
43785430152SSean Wang 
43885430152SSean Wang int mtk_pinconf_bias_set(struct mtk_pinctrl *hw,
43985430152SSean Wang 			 const struct mtk_pin_desc *desc, bool pullup)
44085430152SSean Wang {
44185430152SSean Wang 	int err, arg;
44285430152SSean Wang 
44385430152SSean Wang 	arg = pullup ? 1 : 2;
44485430152SSean Wang 
445ea051eb3SSean Wang 	err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PU, arg & 1);
44685430152SSean Wang 	if (err)
44785430152SSean Wang 		return err;
44885430152SSean Wang 
449ea051eb3SSean Wang 	err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PD,
45085430152SSean Wang 			       !!(arg & 2));
45185430152SSean Wang 	if (err)
45285430152SSean Wang 		return err;
45385430152SSean Wang 
45485430152SSean Wang 	return 0;
45585430152SSean Wang }
4568174a851SLight Hsieh EXPORT_SYMBOL_GPL(mtk_pinconf_bias_set);
45785430152SSean Wang 
45885430152SSean Wang int mtk_pinconf_bias_get(struct mtk_pinctrl *hw,
45985430152SSean Wang 			 const struct mtk_pin_desc *desc, bool pullup, int *res)
46085430152SSean Wang {
46185430152SSean Wang 	int reg, err, v;
46285430152SSean Wang 
46385430152SSean Wang 	reg = pullup ? PINCTRL_PIN_REG_PU : PINCTRL_PIN_REG_PD;
46485430152SSean Wang 
465ea051eb3SSean Wang 	err = mtk_hw_get_value(hw, desc, reg, &v);
46685430152SSean Wang 	if (err)
46785430152SSean Wang 		return err;
46885430152SSean Wang 
46985430152SSean Wang 	if (!v)
47085430152SSean Wang 		return -EINVAL;
47185430152SSean Wang 
47285430152SSean Wang 	*res = 1;
47385430152SSean Wang 
47485430152SSean Wang 	return 0;
47585430152SSean Wang }
4768174a851SLight Hsieh EXPORT_SYMBOL_GPL(mtk_pinconf_bias_get);
47785430152SSean Wang 
4789afc305bSSean Wang /* Revision 1 */
4799afc305bSSean Wang int mtk_pinconf_bias_disable_set_rev1(struct mtk_pinctrl *hw,
4809afc305bSSean Wang 				      const struct mtk_pin_desc *desc)
4819afc305bSSean Wang {
4829afc305bSSean Wang 	int err;
4839afc305bSSean Wang 
484ea051eb3SSean Wang 	err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PULLEN,
4859afc305bSSean Wang 			       MTK_DISABLE);
4869afc305bSSean Wang 	if (err)
4879afc305bSSean Wang 		return err;
4889afc305bSSean Wang 
4899afc305bSSean Wang 	return 0;
4909afc305bSSean Wang }
4918174a851SLight Hsieh EXPORT_SYMBOL_GPL(mtk_pinconf_bias_disable_set_rev1);
4929afc305bSSean Wang 
4939afc305bSSean Wang int mtk_pinconf_bias_disable_get_rev1(struct mtk_pinctrl *hw,
4949afc305bSSean Wang 				      const struct mtk_pin_desc *desc, int *res)
4959afc305bSSean Wang {
4969afc305bSSean Wang 	int v, err;
4979afc305bSSean Wang 
498ea051eb3SSean Wang 	err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PULLEN, &v);
4999afc305bSSean Wang 	if (err)
5009afc305bSSean Wang 		return err;
5019afc305bSSean Wang 
5029afc305bSSean Wang 	if (v == MTK_ENABLE)
5039afc305bSSean Wang 		return -EINVAL;
5049afc305bSSean Wang 
5059afc305bSSean Wang 	*res = 1;
5069afc305bSSean Wang 
5079afc305bSSean Wang 	return 0;
5089afc305bSSean Wang }
5098174a851SLight Hsieh EXPORT_SYMBOL_GPL(mtk_pinconf_bias_disable_get_rev1);
5109afc305bSSean Wang 
5119afc305bSSean Wang int mtk_pinconf_bias_set_rev1(struct mtk_pinctrl *hw,
5129afc305bSSean Wang 			      const struct mtk_pin_desc *desc, bool pullup)
5139afc305bSSean Wang {
5149afc305bSSean Wang 	int err, arg;
5159afc305bSSean Wang 
5169afc305bSSean Wang 	arg = pullup ? MTK_PULLUP : MTK_PULLDOWN;
5179afc305bSSean Wang 
518ea051eb3SSean Wang 	err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PULLEN,
5199afc305bSSean Wang 			       MTK_ENABLE);
5209afc305bSSean Wang 	if (err)
5219afc305bSSean Wang 		return err;
5229afc305bSSean Wang 
523ea051eb3SSean Wang 	err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PULLSEL, arg);
5249afc305bSSean Wang 	if (err)
5259afc305bSSean Wang 		return err;
5269afc305bSSean Wang 
5279afc305bSSean Wang 	return 0;
5289afc305bSSean Wang }
5298174a851SLight Hsieh EXPORT_SYMBOL_GPL(mtk_pinconf_bias_set_rev1);
5309afc305bSSean Wang 
5319afc305bSSean Wang int mtk_pinconf_bias_get_rev1(struct mtk_pinctrl *hw,
5329afc305bSSean Wang 			      const struct mtk_pin_desc *desc, bool pullup,
5339afc305bSSean Wang 			      int *res)
5349afc305bSSean Wang {
5359afc305bSSean Wang 	int err, v;
5369afc305bSSean Wang 
537ea051eb3SSean Wang 	err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PULLEN, &v);
5389afc305bSSean Wang 	if (err)
5399afc305bSSean Wang 		return err;
5409afc305bSSean Wang 
5419afc305bSSean Wang 	if (v == MTK_DISABLE)
5429afc305bSSean Wang 		return -EINVAL;
5439afc305bSSean Wang 
544ea051eb3SSean Wang 	err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PULLSEL, &v);
5459afc305bSSean Wang 	if (err)
5469afc305bSSean Wang 		return err;
5479afc305bSSean Wang 
5489afc305bSSean Wang 	if (pullup ^ (v == MTK_PULLUP))
5499afc305bSSean Wang 		return -EINVAL;
5509afc305bSSean Wang 
5519afc305bSSean Wang 	*res = 1;
5529afc305bSSean Wang 
5539afc305bSSean Wang 	return 0;
5549afc305bSSean Wang }
5558174a851SLight Hsieh EXPORT_SYMBOL_GPL(mtk_pinconf_bias_get_rev1);
5569afc305bSSean Wang 
557cafe19dbSLight Hsieh /* Combo for the following pull register type:
558cafe19dbSLight Hsieh  * 1. PU + PD
559cafe19dbSLight Hsieh  * 2. PULLSEL + PULLEN
560cafe19dbSLight Hsieh  * 3. PUPD + R0 + R1
561cafe19dbSLight Hsieh  */
562cafe19dbSLight Hsieh static int mtk_pinconf_bias_set_pu_pd(struct mtk_pinctrl *hw,
563cafe19dbSLight Hsieh 				const struct mtk_pin_desc *desc,
564cafe19dbSLight Hsieh 				u32 pullup, u32 arg)
565cafe19dbSLight Hsieh {
566cafe19dbSLight Hsieh 	int err, pu, pd;
567cafe19dbSLight Hsieh 
568cafe19dbSLight Hsieh 	if (arg == MTK_DISABLE) {
569cafe19dbSLight Hsieh 		pu = 0;
570cafe19dbSLight Hsieh 		pd = 0;
571cafe19dbSLight Hsieh 	} else if ((arg == MTK_ENABLE) && pullup) {
572cafe19dbSLight Hsieh 		pu = 1;
573cafe19dbSLight Hsieh 		pd = 0;
574cafe19dbSLight Hsieh 	} else if ((arg == MTK_ENABLE) && !pullup) {
575cafe19dbSLight Hsieh 		pu = 0;
576cafe19dbSLight Hsieh 		pd = 1;
577cafe19dbSLight Hsieh 	} else {
578cafe19dbSLight Hsieh 		err = -EINVAL;
579cafe19dbSLight Hsieh 		goto out;
580cafe19dbSLight Hsieh 	}
581cafe19dbSLight Hsieh 
582cafe19dbSLight Hsieh 	err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PU, pu);
583cafe19dbSLight Hsieh 	if (err)
584cafe19dbSLight Hsieh 		goto out;
585cafe19dbSLight Hsieh 
586cafe19dbSLight Hsieh 	err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PD, pd);
587cafe19dbSLight Hsieh 
588cafe19dbSLight Hsieh out:
589cafe19dbSLight Hsieh 	return err;
590cafe19dbSLight Hsieh }
591cafe19dbSLight Hsieh 
592cafe19dbSLight Hsieh static int mtk_pinconf_bias_set_pullsel_pullen(struct mtk_pinctrl *hw,
593cafe19dbSLight Hsieh 				const struct mtk_pin_desc *desc,
594cafe19dbSLight Hsieh 				u32 pullup, u32 arg)
595cafe19dbSLight Hsieh {
596cafe19dbSLight Hsieh 	int err, enable;
597cafe19dbSLight Hsieh 
598cafe19dbSLight Hsieh 	if (arg == MTK_DISABLE)
599cafe19dbSLight Hsieh 		enable = 0;
600cafe19dbSLight Hsieh 	else if (arg == MTK_ENABLE)
601cafe19dbSLight Hsieh 		enable = 1;
602cafe19dbSLight Hsieh 	else {
603cafe19dbSLight Hsieh 		err = -EINVAL;
604cafe19dbSLight Hsieh 		goto out;
605cafe19dbSLight Hsieh 	}
606cafe19dbSLight Hsieh 
607cafe19dbSLight Hsieh 	err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PULLEN, enable);
608cafe19dbSLight Hsieh 	if (err)
609cafe19dbSLight Hsieh 		goto out;
610cafe19dbSLight Hsieh 
611cafe19dbSLight Hsieh 	err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PULLSEL, pullup);
612cafe19dbSLight Hsieh 
613cafe19dbSLight Hsieh out:
614cafe19dbSLight Hsieh 	return err;
615cafe19dbSLight Hsieh }
616cafe19dbSLight Hsieh 
617cafe19dbSLight Hsieh static int mtk_pinconf_bias_set_pupd_r1_r0(struct mtk_pinctrl *hw,
618cafe19dbSLight Hsieh 				const struct mtk_pin_desc *desc,
619cafe19dbSLight Hsieh 				u32 pullup, u32 arg)
620cafe19dbSLight Hsieh {
621cafe19dbSLight Hsieh 	int err, r0, r1;
622cafe19dbSLight Hsieh 
623cafe19dbSLight Hsieh 	if ((arg == MTK_DISABLE) || (arg == MTK_PUPD_SET_R1R0_00)) {
624cafe19dbSLight Hsieh 		pullup = 0;
625cafe19dbSLight Hsieh 		r0 = 0;
626cafe19dbSLight Hsieh 		r1 = 0;
627cafe19dbSLight Hsieh 	} else if (arg == MTK_PUPD_SET_R1R0_01) {
628cafe19dbSLight Hsieh 		r0 = 1;
629cafe19dbSLight Hsieh 		r1 = 0;
630cafe19dbSLight Hsieh 	} else if (arg == MTK_PUPD_SET_R1R0_10) {
631cafe19dbSLight Hsieh 		r0 = 0;
632cafe19dbSLight Hsieh 		r1 = 1;
633cafe19dbSLight Hsieh 	} else if (arg == MTK_PUPD_SET_R1R0_11) {
634cafe19dbSLight Hsieh 		r0 = 1;
635cafe19dbSLight Hsieh 		r1 = 1;
636cafe19dbSLight Hsieh 	} else {
637cafe19dbSLight Hsieh 		err = -EINVAL;
638cafe19dbSLight Hsieh 		goto out;
639cafe19dbSLight Hsieh 	}
640cafe19dbSLight Hsieh 
641cafe19dbSLight Hsieh 	/* MTK HW PUPD bit: 1 for pull-down, 0 for pull-up */
642cafe19dbSLight Hsieh 	err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PUPD, !pullup);
643cafe19dbSLight Hsieh 	if (err)
644cafe19dbSLight Hsieh 		goto out;
645cafe19dbSLight Hsieh 
646cafe19dbSLight Hsieh 	err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_R0, r0);
647cafe19dbSLight Hsieh 	if (err)
648cafe19dbSLight Hsieh 		goto out;
649cafe19dbSLight Hsieh 
650cafe19dbSLight Hsieh 	err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_R1, r1);
651cafe19dbSLight Hsieh 
652cafe19dbSLight Hsieh out:
653cafe19dbSLight Hsieh 	return err;
654cafe19dbSLight Hsieh }
655cafe19dbSLight Hsieh 
656cafe19dbSLight Hsieh static int mtk_pinconf_bias_get_pu_pd(struct mtk_pinctrl *hw,
657cafe19dbSLight Hsieh 				const struct mtk_pin_desc *desc,
658cafe19dbSLight Hsieh 				u32 *pullup, u32 *enable)
659cafe19dbSLight Hsieh {
660cafe19dbSLight Hsieh 	int err, pu, pd;
661cafe19dbSLight Hsieh 
662cafe19dbSLight Hsieh 	err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PU, &pu);
663cafe19dbSLight Hsieh 	if (err)
664cafe19dbSLight Hsieh 		goto out;
665cafe19dbSLight Hsieh 
666cafe19dbSLight Hsieh 	err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PD, &pd);
667cafe19dbSLight Hsieh 	if (err)
668cafe19dbSLight Hsieh 		goto out;
669cafe19dbSLight Hsieh 
670cafe19dbSLight Hsieh 	if (pu == 0 && pd == 0) {
671cafe19dbSLight Hsieh 		*pullup = 0;
672cafe19dbSLight Hsieh 		*enable = MTK_DISABLE;
673cafe19dbSLight Hsieh 	} else if (pu == 1 && pd == 0) {
674cafe19dbSLight Hsieh 		*pullup = 1;
675cafe19dbSLight Hsieh 		*enable = MTK_ENABLE;
676cafe19dbSLight Hsieh 	} else if (pu == 0 && pd == 1) {
677cafe19dbSLight Hsieh 		*pullup = 0;
678cafe19dbSLight Hsieh 		*enable = MTK_ENABLE;
679cafe19dbSLight Hsieh 	} else
680cafe19dbSLight Hsieh 		err = -EINVAL;
681cafe19dbSLight Hsieh 
682cafe19dbSLight Hsieh out:
683cafe19dbSLight Hsieh 	return err;
684cafe19dbSLight Hsieh }
685cafe19dbSLight Hsieh 
686cafe19dbSLight Hsieh static int mtk_pinconf_bias_get_pullsel_pullen(struct mtk_pinctrl *hw,
687cafe19dbSLight Hsieh 				const struct mtk_pin_desc *desc,
688cafe19dbSLight Hsieh 				u32 *pullup, u32 *enable)
689cafe19dbSLight Hsieh {
690cafe19dbSLight Hsieh 	int err;
691cafe19dbSLight Hsieh 
692cafe19dbSLight Hsieh 	err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PULLSEL, pullup);
693cafe19dbSLight Hsieh 	if (err)
694cafe19dbSLight Hsieh 		goto out;
695cafe19dbSLight Hsieh 
696cafe19dbSLight Hsieh 	err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PULLEN, enable);
697cafe19dbSLight Hsieh 
698cafe19dbSLight Hsieh out:
699cafe19dbSLight Hsieh 	return err;
700cafe19dbSLight Hsieh }
701cafe19dbSLight Hsieh 
702cafe19dbSLight Hsieh static int mtk_pinconf_bias_get_pupd_r1_r0(struct mtk_pinctrl *hw,
703cafe19dbSLight Hsieh 				const struct mtk_pin_desc *desc,
704cafe19dbSLight Hsieh 				u32 *pullup, u32 *enable)
705cafe19dbSLight Hsieh {
706cafe19dbSLight Hsieh 	int err, r0, r1;
707cafe19dbSLight Hsieh 
708cafe19dbSLight Hsieh 	err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PUPD, pullup);
709cafe19dbSLight Hsieh 	if (err)
710cafe19dbSLight Hsieh 		goto out;
711cafe19dbSLight Hsieh 	/* MTK HW PUPD bit: 1 for pull-down, 0 for pull-up */
712cafe19dbSLight Hsieh 	*pullup = !(*pullup);
713cafe19dbSLight Hsieh 
714cafe19dbSLight Hsieh 	err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_R0, &r0);
715cafe19dbSLight Hsieh 	if (err)
716cafe19dbSLight Hsieh 		goto out;
717cafe19dbSLight Hsieh 
718cafe19dbSLight Hsieh 	err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_R1, &r1);
719cafe19dbSLight Hsieh 	if (err)
720cafe19dbSLight Hsieh 		goto out;
721cafe19dbSLight Hsieh 
722cafe19dbSLight Hsieh 	if ((r1 == 0) && (r0 == 0))
723cafe19dbSLight Hsieh 		*enable = MTK_PUPD_SET_R1R0_00;
724cafe19dbSLight Hsieh 	else if ((r1 == 0) && (r0 == 1))
725cafe19dbSLight Hsieh 		*enable = MTK_PUPD_SET_R1R0_01;
726cafe19dbSLight Hsieh 	else if ((r1 == 1) && (r0 == 0))
727cafe19dbSLight Hsieh 		*enable = MTK_PUPD_SET_R1R0_10;
728cafe19dbSLight Hsieh 	else if ((r1 == 1) && (r0 == 1))
729cafe19dbSLight Hsieh 		*enable = MTK_PUPD_SET_R1R0_11;
730cafe19dbSLight Hsieh 	else
731cafe19dbSLight Hsieh 		err = -EINVAL;
732cafe19dbSLight Hsieh 
733cafe19dbSLight Hsieh out:
734cafe19dbSLight Hsieh 	return err;
735cafe19dbSLight Hsieh }
736cafe19dbSLight Hsieh 
737cafe19dbSLight Hsieh int mtk_pinconf_bias_set_combo(struct mtk_pinctrl *hw,
738cafe19dbSLight Hsieh 				const struct mtk_pin_desc *desc,
739cafe19dbSLight Hsieh 				u32 pullup, u32 arg)
740cafe19dbSLight Hsieh {
741cafe19dbSLight Hsieh 	int err;
742cafe19dbSLight Hsieh 
743cafe19dbSLight Hsieh 	err = mtk_pinconf_bias_set_pu_pd(hw, desc, pullup, arg);
744cafe19dbSLight Hsieh 	if (!err)
745cafe19dbSLight Hsieh 		goto out;
746cafe19dbSLight Hsieh 
747cafe19dbSLight Hsieh 	err = mtk_pinconf_bias_set_pullsel_pullen(hw, desc, pullup, arg);
748cafe19dbSLight Hsieh 	if (!err)
749cafe19dbSLight Hsieh 		goto out;
750cafe19dbSLight Hsieh 
751cafe19dbSLight Hsieh 	err = mtk_pinconf_bias_set_pupd_r1_r0(hw, desc, pullup, arg);
752cafe19dbSLight Hsieh 
753cafe19dbSLight Hsieh out:
754cafe19dbSLight Hsieh 	return err;
755cafe19dbSLight Hsieh }
7568174a851SLight Hsieh EXPORT_SYMBOL_GPL(mtk_pinconf_bias_set_combo);
757cafe19dbSLight Hsieh 
758cafe19dbSLight Hsieh int mtk_pinconf_bias_get_combo(struct mtk_pinctrl *hw,
759cafe19dbSLight Hsieh 			      const struct mtk_pin_desc *desc,
760cafe19dbSLight Hsieh 			      u32 *pullup, u32 *enable)
761cafe19dbSLight Hsieh {
762cafe19dbSLight Hsieh 	int err;
763cafe19dbSLight Hsieh 
764cafe19dbSLight Hsieh 	err = mtk_pinconf_bias_get_pu_pd(hw, desc, pullup, enable);
765cafe19dbSLight Hsieh 	if (!err)
766cafe19dbSLight Hsieh 		goto out;
767cafe19dbSLight Hsieh 
768cafe19dbSLight Hsieh 	err = mtk_pinconf_bias_get_pullsel_pullen(hw, desc, pullup, enable);
769cafe19dbSLight Hsieh 	if (!err)
770cafe19dbSLight Hsieh 		goto out;
771cafe19dbSLight Hsieh 
772cafe19dbSLight Hsieh 	err = mtk_pinconf_bias_get_pupd_r1_r0(hw, desc, pullup, enable);
773cafe19dbSLight Hsieh 
774cafe19dbSLight Hsieh out:
775cafe19dbSLight Hsieh 	return err;
776cafe19dbSLight Hsieh }
7778174a851SLight Hsieh EXPORT_SYMBOL_GPL(mtk_pinconf_bias_get_combo);
778cafe19dbSLight Hsieh 
779c2832197SSean Wang /* Revision 0 */
780c2832197SSean Wang int mtk_pinconf_drive_set(struct mtk_pinctrl *hw,
781c2832197SSean Wang 			  const struct mtk_pin_desc *desc, u32 arg)
782c2832197SSean Wang {
783c2832197SSean Wang 	const struct mtk_drive_desc *tb;
784c2832197SSean Wang 	int err = -ENOTSUPP;
785c2832197SSean Wang 
786c2832197SSean Wang 	tb = &mtk_drive[desc->drv_n];
787c2832197SSean Wang 	/* 4mA when (e8, e4) = (0, 0)
788c2832197SSean Wang 	 * 8mA when (e8, e4) = (0, 1)
789c2832197SSean Wang 	 * 12mA when (e8, e4) = (1, 0)
790c2832197SSean Wang 	 * 16mA when (e8, e4) = (1, 1)
791c2832197SSean Wang 	 */
792c2832197SSean Wang 	if ((arg >= tb->min && arg <= tb->max) && !(arg % tb->step)) {
793c2832197SSean Wang 		arg = (arg / tb->step - 1) * tb->scal;
794ea051eb3SSean Wang 		err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_E4,
795c2832197SSean Wang 				       arg & 0x1);
796c2832197SSean Wang 		if (err)
797c2832197SSean Wang 			return err;
798c2832197SSean Wang 
799ea051eb3SSean Wang 		err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_E8,
800c2832197SSean Wang 				       (arg & 0x2) >> 1);
801c2832197SSean Wang 		if (err)
802c2832197SSean Wang 			return err;
803c2832197SSean Wang 	}
804c2832197SSean Wang 
805c2832197SSean Wang 	return err;
806c2832197SSean Wang }
8078174a851SLight Hsieh EXPORT_SYMBOL_GPL(mtk_pinconf_drive_set);
808c2832197SSean Wang 
809c2832197SSean Wang int mtk_pinconf_drive_get(struct mtk_pinctrl *hw,
810c2832197SSean Wang 			  const struct mtk_pin_desc *desc, int *val)
811c2832197SSean Wang {
812c2832197SSean Wang 	const struct mtk_drive_desc *tb;
813c2832197SSean Wang 	int err, val1, val2;
814c2832197SSean Wang 
815c2832197SSean Wang 	tb = &mtk_drive[desc->drv_n];
816c2832197SSean Wang 
817ea051eb3SSean Wang 	err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_E4, &val1);
818c2832197SSean Wang 	if (err)
819c2832197SSean Wang 		return err;
820c2832197SSean Wang 
821ea051eb3SSean Wang 	err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_E8, &val2);
822c2832197SSean Wang 	if (err)
823c2832197SSean Wang 		return err;
824c2832197SSean Wang 
825c2832197SSean Wang 	/* 4mA when (e8, e4) = (0, 0); 8mA when (e8, e4) = (0, 1)
826c2832197SSean Wang 	 * 12mA when (e8, e4) = (1, 0); 16mA when (e8, e4) = (1, 1)
827c2832197SSean Wang 	 */
828c2832197SSean Wang 	*val = (((val2 << 1) + val1) / tb->scal + 1) * tb->step;
829c2832197SSean Wang 
830c2832197SSean Wang 	return 0;
831c2832197SSean Wang }
8328174a851SLight Hsieh EXPORT_SYMBOL_GPL(mtk_pinconf_drive_get);
8333ad38a14SSean Wang 
8343ad38a14SSean Wang /* Revision 1 */
8353ad38a14SSean Wang int mtk_pinconf_drive_set_rev1(struct mtk_pinctrl *hw,
8363ad38a14SSean Wang 			       const struct mtk_pin_desc *desc, u32 arg)
8373ad38a14SSean Wang {
8383ad38a14SSean Wang 	const struct mtk_drive_desc *tb;
8393ad38a14SSean Wang 	int err = -ENOTSUPP;
8403ad38a14SSean Wang 
8413ad38a14SSean Wang 	tb = &mtk_drive[desc->drv_n];
8423ad38a14SSean Wang 
8433ad38a14SSean Wang 	if ((arg >= tb->min && arg <= tb->max) && !(arg % tb->step)) {
8443ad38a14SSean Wang 		arg = (arg / tb->step - 1) * tb->scal;
8453ad38a14SSean Wang 
846ea051eb3SSean Wang 		err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_DRV,
8473ad38a14SSean Wang 				       arg);
8483ad38a14SSean Wang 		if (err)
8493ad38a14SSean Wang 			return err;
8503ad38a14SSean Wang 	}
8513ad38a14SSean Wang 
8523ad38a14SSean Wang 	return err;
8533ad38a14SSean Wang }
8548174a851SLight Hsieh EXPORT_SYMBOL_GPL(mtk_pinconf_drive_set_rev1);
8553ad38a14SSean Wang 
8563ad38a14SSean Wang int mtk_pinconf_drive_get_rev1(struct mtk_pinctrl *hw,
8573ad38a14SSean Wang 			       const struct mtk_pin_desc *desc, int *val)
8583ad38a14SSean Wang {
8593ad38a14SSean Wang 	const struct mtk_drive_desc *tb;
8603ad38a14SSean Wang 	int err, val1;
8613ad38a14SSean Wang 
8623ad38a14SSean Wang 	tb = &mtk_drive[desc->drv_n];
8633ad38a14SSean Wang 
864ea051eb3SSean Wang 	err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_DRV, &val1);
8653ad38a14SSean Wang 	if (err)
8663ad38a14SSean Wang 		return err;
8673ad38a14SSean Wang 
8683ad38a14SSean Wang 	*val = ((val1 & 0x7) / tb->scal + 1) * tb->step;
8693ad38a14SSean Wang 
8703ad38a14SSean Wang 	return 0;
8713ad38a14SSean Wang }
8728174a851SLight Hsieh EXPORT_SYMBOL_GPL(mtk_pinconf_drive_get_rev1);
8730d7ca772SSean Wang 
8745f755e1fSLight Hsieh int mtk_pinconf_drive_set_raw(struct mtk_pinctrl *hw,
8755f755e1fSLight Hsieh 			       const struct mtk_pin_desc *desc, u32 arg)
8765f755e1fSLight Hsieh {
8775f755e1fSLight Hsieh 	return mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_DRV, arg);
8785f755e1fSLight Hsieh }
8798174a851SLight Hsieh EXPORT_SYMBOL_GPL(mtk_pinconf_drive_set_raw);
8805f755e1fSLight Hsieh 
8815f755e1fSLight Hsieh int mtk_pinconf_drive_get_raw(struct mtk_pinctrl *hw,
8825f755e1fSLight Hsieh 			       const struct mtk_pin_desc *desc, int *val)
8835f755e1fSLight Hsieh {
8845f755e1fSLight Hsieh 	return mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_DRV, val);
8855f755e1fSLight Hsieh }
8868174a851SLight Hsieh EXPORT_SYMBOL_GPL(mtk_pinconf_drive_get_raw);
8875f755e1fSLight Hsieh 
8880d7ca772SSean Wang int mtk_pinconf_adv_pull_set(struct mtk_pinctrl *hw,
8890d7ca772SSean Wang 			     const struct mtk_pin_desc *desc, bool pullup,
8900d7ca772SSean Wang 			     u32 arg)
8910d7ca772SSean Wang {
8920d7ca772SSean Wang 	int err;
8930d7ca772SSean Wang 
8940d7ca772SSean Wang 	/* 10K off & 50K (75K) off, when (R0, R1) = (0, 0);
8950d7ca772SSean Wang 	 * 10K off & 50K (75K) on, when (R0, R1) = (0, 1);
8960d7ca772SSean Wang 	 * 10K on & 50K (75K) off, when (R0, R1) = (1, 0);
8970d7ca772SSean Wang 	 * 10K on & 50K (75K) on, when (R0, R1) = (1, 1)
8980d7ca772SSean Wang 	 */
899ea051eb3SSean Wang 	err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_R0, arg & 1);
9000d7ca772SSean Wang 	if (err)
9010d7ca772SSean Wang 		return 0;
9020d7ca772SSean Wang 
903ea051eb3SSean Wang 	err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_R1,
9040d7ca772SSean Wang 			       !!(arg & 2));
9050d7ca772SSean Wang 	if (err)
9060d7ca772SSean Wang 		return 0;
9070d7ca772SSean Wang 
9080d7ca772SSean Wang 	arg = pullup ? 0 : 1;
9090d7ca772SSean Wang 
910ea051eb3SSean Wang 	err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PUPD, arg);
9110d7ca772SSean Wang 
91279348f6fSSean Wang 	/* If PUPD register is not supported for that pin, let's fallback to
91379348f6fSSean Wang 	 * general bias control.
91479348f6fSSean Wang 	 */
91579348f6fSSean Wang 	if (err == -ENOTSUPP) {
91679348f6fSSean Wang 		if (hw->soc->bias_set) {
91779348f6fSSean Wang 			err = hw->soc->bias_set(hw, desc, pullup);
91879348f6fSSean Wang 			if (err)
91979348f6fSSean Wang 				return err;
92079348f6fSSean Wang 		} else {
92179348f6fSSean Wang 			return -ENOTSUPP;
92279348f6fSSean Wang 		}
92379348f6fSSean Wang 	}
92479348f6fSSean Wang 
9250d7ca772SSean Wang 	return err;
9260d7ca772SSean Wang }
9278174a851SLight Hsieh EXPORT_SYMBOL_GPL(mtk_pinconf_adv_pull_set);
9280d7ca772SSean Wang 
9290d7ca772SSean Wang int mtk_pinconf_adv_pull_get(struct mtk_pinctrl *hw,
9300d7ca772SSean Wang 			     const struct mtk_pin_desc *desc, bool pullup,
9310d7ca772SSean Wang 			     u32 *val)
9320d7ca772SSean Wang {
9330d7ca772SSean Wang 	u32 t, t2;
9340d7ca772SSean Wang 	int err;
9350d7ca772SSean Wang 
936ea051eb3SSean Wang 	err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PUPD, &t);
93779348f6fSSean Wang 
93879348f6fSSean Wang 	/* If PUPD register is not supported for that pin, let's fallback to
93979348f6fSSean Wang 	 * general bias control.
94079348f6fSSean Wang 	 */
94179348f6fSSean Wang 	if (err == -ENOTSUPP) {
94279348f6fSSean Wang 		if (hw->soc->bias_get) {
94379348f6fSSean Wang 			err = hw->soc->bias_get(hw, desc, pullup, val);
94479348f6fSSean Wang 			if (err)
94579348f6fSSean Wang 				return err;
94679348f6fSSean Wang 		} else {
94779348f6fSSean Wang 			return -ENOTSUPP;
94879348f6fSSean Wang 		}
94979348f6fSSean Wang 	} else {
95079348f6fSSean Wang 		/* t == 0 supposes PULLUP for the customized PULL setup */
9510d7ca772SSean Wang 		if (err)
9520d7ca772SSean Wang 			return err;
9530d7ca772SSean Wang 
9540d7ca772SSean Wang 		if (pullup ^ !t)
9550d7ca772SSean Wang 			return -EINVAL;
95679348f6fSSean Wang 	}
9570d7ca772SSean Wang 
958ea051eb3SSean Wang 	err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_R0, &t);
9590d7ca772SSean Wang 	if (err)
9600d7ca772SSean Wang 		return err;
9610d7ca772SSean Wang 
962ea051eb3SSean Wang 	err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_R1, &t2);
9630d7ca772SSean Wang 	if (err)
9640d7ca772SSean Wang 		return err;
9650d7ca772SSean Wang 
9660d7ca772SSean Wang 	*val = (t | t2 << 1) & 0x7;
9670d7ca772SSean Wang 
9680d7ca772SSean Wang 	return 0;
9690d7ca772SSean Wang }
9708174a851SLight Hsieh EXPORT_SYMBOL_GPL(mtk_pinconf_adv_pull_get);
9715e73de34SZhiyong Tao 
9725e73de34SZhiyong Tao int mtk_pinconf_adv_drive_set(struct mtk_pinctrl *hw,
9735e73de34SZhiyong Tao 			      const struct mtk_pin_desc *desc, u32 arg)
9745e73de34SZhiyong Tao {
9755e73de34SZhiyong Tao 	int err;
9765e73de34SZhiyong Tao 	int en = arg & 1;
9775e73de34SZhiyong Tao 	int e0 = !!(arg & 2);
9785e73de34SZhiyong Tao 	int e1 = !!(arg & 4);
9795e73de34SZhiyong Tao 
9805e73de34SZhiyong Tao 	err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_DRV_EN, en);
9815e73de34SZhiyong Tao 	if (err)
9825e73de34SZhiyong Tao 		return err;
9835e73de34SZhiyong Tao 
9845e73de34SZhiyong Tao 	if (!en)
9855e73de34SZhiyong Tao 		return err;
9865e73de34SZhiyong Tao 
9875e73de34SZhiyong Tao 	err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_DRV_E0, e0);
9885e73de34SZhiyong Tao 	if (err)
9895e73de34SZhiyong Tao 		return err;
9905e73de34SZhiyong Tao 
9915e73de34SZhiyong Tao 	err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_DRV_E1, e1);
9925e73de34SZhiyong Tao 	if (err)
9935e73de34SZhiyong Tao 		return err;
9945e73de34SZhiyong Tao 
9955e73de34SZhiyong Tao 	return err;
9965e73de34SZhiyong Tao }
9978174a851SLight Hsieh EXPORT_SYMBOL_GPL(mtk_pinconf_adv_drive_set);
9985e73de34SZhiyong Tao 
9995e73de34SZhiyong Tao int mtk_pinconf_adv_drive_get(struct mtk_pinctrl *hw,
10005e73de34SZhiyong Tao 			      const struct mtk_pin_desc *desc, u32 *val)
10015e73de34SZhiyong Tao {
10025e73de34SZhiyong Tao 	u32 en, e0, e1;
10035e73de34SZhiyong Tao 	int err;
10045e73de34SZhiyong Tao 
10055e73de34SZhiyong Tao 	err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_DRV_EN, &en);
10065e73de34SZhiyong Tao 	if (err)
10075e73de34SZhiyong Tao 		return err;
10085e73de34SZhiyong Tao 
10095e73de34SZhiyong Tao 	err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_DRV_E0, &e0);
10105e73de34SZhiyong Tao 	if (err)
10115e73de34SZhiyong Tao 		return err;
10125e73de34SZhiyong Tao 
10135e73de34SZhiyong Tao 	err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_DRV_E1, &e1);
10145e73de34SZhiyong Tao 	if (err)
10155e73de34SZhiyong Tao 		return err;
10165e73de34SZhiyong Tao 
10175e73de34SZhiyong Tao 	*val = (en | e0 << 1 | e1 << 2) & 0x7;
10185e73de34SZhiyong Tao 
10195e73de34SZhiyong Tao 	return 0;
10205e73de34SZhiyong Tao }
10218174a851SLight Hsieh EXPORT_SYMBOL_GPL(mtk_pinconf_adv_drive_get);
1022c7acd6feSArnd Bergmann 
1023c7acd6feSArnd Bergmann MODULE_LICENSE("GPL v2");
1024c7acd6feSArnd Bergmann MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>");
1025c7acd6feSArnd Bergmann MODULE_DESCRIPTION("Pin configuration library module for mediatek SoCs");
1026