3 * Mario Six, Guntermann & Drunck GmbH, six@gdsys.de
5 * based on arch/powerpc/include/asm/mpc85xx_gpio.h, which is
7 * Copyright 2010 eXMeritus, A Boeing Company
9 * SPDX-License-Identifier: GPL-2.0+
17 DECLARE_GLOBAL_DATA_PTR;
28 struct mpc8xxx_gpio_data {
29 /* The bank's register base in memory */
30 struct ccsr_gpio __iomem *base;
31 /* The address of the registers; used to identify the bank */
33 /* The GPIO count of the bank */
35 /* The GPDAT register cannot be used to determine the value of output
36 * pins on MPC8572/MPC8536, so we shadow it and use the shadowed value
48 inline u32 gpio_mask(uint gpio)
50 return (1U << (31 - (gpio)));
53 static inline u32 mpc8xxx_gpio_get_val(struct ccsr_gpio *base, u32 mask)
55 return in_be32(&base->gpdat) & mask;
58 static inline u32 mpc8xxx_gpio_get_dir(struct ccsr_gpio *base, u32 mask)
60 return in_be32(&base->gpdir) & mask;
63 static inline void mpc8xxx_gpio_set_in(struct ccsr_gpio *base, u32 gpios)
65 clrbits_be32(&base->gpdat, gpios);
66 /* GPDIR register 0 -> input */
67 clrbits_be32(&base->gpdir, gpios);
70 static inline void mpc8xxx_gpio_set_low(struct ccsr_gpio *base, u32 gpios)
72 clrbits_be32(&base->gpdat, gpios);
73 /* GPDIR register 1 -> output */
74 setbits_be32(&base->gpdir, gpios);
77 static inline void mpc8xxx_gpio_set_high(struct ccsr_gpio *base, u32 gpios)
79 setbits_be32(&base->gpdat, gpios);
80 /* GPDIR register 1 -> output */
81 setbits_be32(&base->gpdir, gpios);
84 static inline int mpc8xxx_gpio_open_drain_val(struct ccsr_gpio *base, u32 mask)
86 return in_be32(&base->gpodr) & mask;
89 static inline void mpc8xxx_gpio_open_drain_on(struct ccsr_gpio *base, u32
92 /* GPODR register 1 -> open drain on */
93 setbits_be32(&base->gpodr, gpios);
96 static inline void mpc8xxx_gpio_open_drain_off(struct ccsr_gpio *base,
99 /* GPODR register 0 -> open drain off (actively driven) */
100 clrbits_be32(&base->gpodr, gpios);
103 static int mpc8xxx_gpio_direction_input(struct udevice *dev, uint gpio)
105 struct mpc8xxx_gpio_data *data = dev_get_priv(dev);
107 mpc8xxx_gpio_set_in(data->base, gpio_mask(gpio));
111 static int mpc8xxx_gpio_set_value(struct udevice *dev, uint gpio, int value)
113 struct mpc8xxx_gpio_data *data = dev_get_priv(dev);
116 data->dat_shadow |= gpio_mask(gpio);
117 mpc8xxx_gpio_set_high(data->base, gpio_mask(gpio));
119 data->dat_shadow &= ~gpio_mask(gpio);
120 mpc8xxx_gpio_set_low(data->base, gpio_mask(gpio));
125 static int mpc8xxx_gpio_direction_output(struct udevice *dev, uint gpio,
128 struct mpc8xxx_gpio_data *data = dev_get_priv(dev);
130 /* GPIO 28..31 are input only on MPC5121 */
131 if (data->type == MPC5121_GPIO_TYPE && gpio >= 28)
134 return mpc8xxx_gpio_set_value(dev, gpio, value);
137 static int mpc8xxx_gpio_get_value(struct udevice *dev, uint gpio)
139 struct mpc8xxx_gpio_data *data = dev_get_priv(dev);
141 if (!!mpc8xxx_gpio_get_dir(data->base, gpio_mask(gpio))) {
142 /* Output -> use shadowed value */
143 return !!(data->dat_shadow & gpio_mask(gpio));
146 /* Input -> read value from GPDAT register */
147 return !!mpc8xxx_gpio_get_val(data->base, gpio_mask(gpio));
150 static int mpc8xxx_gpio_get_open_drain(struct udevice *dev, uint gpio)
152 struct mpc8xxx_gpio_data *data = dev_get_priv(dev);
154 return !!mpc8xxx_gpio_open_drain_val(data->base, gpio_mask(gpio));
157 static int mpc8xxx_gpio_set_open_drain(struct udevice *dev, uint gpio,
160 struct mpc8xxx_gpio_data *data = dev_get_priv(dev);
163 mpc8xxx_gpio_open_drain_on(data->base, gpio_mask(gpio));
165 mpc8xxx_gpio_open_drain_off(data->base, gpio_mask(gpio));
170 static int mpc8xxx_gpio_get_function(struct udevice *dev, uint gpio)
172 struct mpc8xxx_gpio_data *data = dev_get_priv(dev);
175 dir = !!mpc8xxx_gpio_get_dir(data->base, gpio_mask(gpio));
176 return dir ? GPIOF_OUTPUT : GPIOF_INPUT;
179 #if CONFIG_IS_ENABLED(OF_CONTROL)
180 static int mpc8xxx_gpio_ofdata_to_platdata(struct udevice *dev)
182 struct mpc8xxx_gpio_plat *plat = dev_get_platdata(dev);
186 addr = fdtdec_get_addr_size_auto_noparent(gd->fdt_blob,
188 "reg", 0, &size, false);
191 plat->ngpios = fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev),
198 static int mpc8xxx_gpio_platdata_to_priv(struct udevice *dev)
200 struct mpc8xxx_gpio_data *priv = dev_get_priv(dev);
201 struct mpc8xxx_gpio_plat *plat = dev_get_platdata(dev);
202 unsigned long size = plat->size;
203 ulong driver_data = dev_get_driver_data(dev);
208 priv->addr = plat->addr;
209 priv->base = map_sysmem(CONFIG_SYS_IMMR + plat->addr, size);
214 priv->gpio_count = plat->ngpios;
215 priv->dat_shadow = 0;
217 priv->type = driver_data;
222 static int mpc8xxx_gpio_probe(struct udevice *dev)
224 struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
225 struct mpc8xxx_gpio_data *data = dev_get_priv(dev);
228 mpc8xxx_gpio_platdata_to_priv(dev);
230 snprintf(name, sizeof(name), "MPC@%lx_", data->addr);
236 uc_priv->bank_name = str;
237 uc_priv->gpio_count = data->gpio_count;
242 static const struct dm_gpio_ops gpio_mpc8xxx_ops = {
243 .direction_input = mpc8xxx_gpio_direction_input,
244 .direction_output = mpc8xxx_gpio_direction_output,
245 .get_value = mpc8xxx_gpio_get_value,
246 .set_value = mpc8xxx_gpio_set_value,
247 .get_open_drain = mpc8xxx_gpio_get_open_drain,
248 .set_open_drain = mpc8xxx_gpio_set_open_drain,
249 .get_function = mpc8xxx_gpio_get_function,
252 static const struct udevice_id mpc8xxx_gpio_ids[] = {
253 { .compatible = "fsl,pq3-gpio", .data = MPC8XXX_GPIO_TYPE },
254 { .compatible = "fsl,mpc8308-gpio", .data = MPC8XXX_GPIO_TYPE },
255 { .compatible = "fsl,mpc8349-gpio", .data = MPC8XXX_GPIO_TYPE },
256 { .compatible = "fsl,mpc8572-gpio", .data = MPC8XXX_GPIO_TYPE},
257 { .compatible = "fsl,mpc8610-gpio", .data = MPC8XXX_GPIO_TYPE},
258 { .compatible = "fsl,mpc5121-gpio", .data = MPC5121_GPIO_TYPE, },
259 { .compatible = "fsl,qoriq-gpio", .data = MPC8XXX_GPIO_TYPE },
263 U_BOOT_DRIVER(gpio_mpc8xxx) = {
264 .name = "gpio_mpc8xxx",
266 .ops = &gpio_mpc8xxx_ops,
267 #if CONFIG_IS_ENABLED(OF_CONTROL)
268 .ofdata_to_platdata = mpc8xxx_gpio_ofdata_to_platdata,
269 .platdata_auto_alloc_size = sizeof(struct mpc8xxx_gpio_plat),
270 .of_match = mpc8xxx_gpio_ids,
272 .probe = mpc8xxx_gpio_probe,
273 .priv_auto_alloc_size = sizeof(struct mpc8xxx_gpio_data),