1 // SPDX-License-Identifier: GPL-2.0+
23 /* Number of the GPIO to read the SC data from */
25 /* Number of the GPIO to read the CON data from */
29  * struct board_gazerbeam_priv - Private data structure for the gazerbeam board
31  * @reset_gpios:  GPIOs for the board's reset GPIOs.
32  * @var_gpios:	  GPIOs for the board's hardware variant GPIOs
33  * @ver_gpios:	  GPIOs for the board's hardware version GPIOs
48  * _read_board_variant_data() - Read variant information from the hardware.
52  * The data read from the board's hardware (mostly hard-wired GPIOs) is stored
53  * in the private data structure of the driver to be used by other driver
56  * Return: 0 if OK, -ve on error.
71 		      dev->name, I2C_BUS_SEQ_NO, res);  in _read_board_variant_data()
77 		      dev->name, I2C_BUS_SEQ_NO);  in _read_board_variant_data()
78 		return -EIO;  in _read_board_variant_data()
86 		      dev->name);  in _read_board_variant_data()
87 		return -EINVAL;  in _read_board_variant_data()
90 	listname = mc2 ? "var-gpios-mc2" : "var-gpios-mc4";  in _read_board_variant_data()
92 	gpio_num = gpio_request_list_by_name(dev, listname, priv->var_gpios,  in _read_board_variant_data()
93 					     ARRAY_SIZE(priv->var_gpios),  in _read_board_variant_data()
97 		      dev->name, listname, gpio_num);  in _read_board_variant_data()
101 	sc = dm_gpio_get_value(&priv->var_gpios[SC_GPIO_NO]);  in _read_board_variant_data()
104 		      dev->name, sc);  in _read_board_variant_data()
108 	con = dm_gpio_get_value(&priv->var_gpios[CON_GPIO_NO]);  in _read_board_variant_data()
111 		      dev->name, con);  in _read_board_variant_data()
117 		      dev->name);  in _read_board_variant_data()
118 		return -EINVAL;  in _read_board_variant_data()
121 	priv->variant = con ? VAR_CON : VAR_CPU;  in _read_board_variant_data()
123 	priv->multichannel = mc4 ? 4 : (mc2 ? 2 : (sc ? 1 : 0));  in _read_board_variant_data()
129  * _read_hwversion() - Read the hardware version from the board.
132  * The hardware version read from the board (from hard-wired GPIOs) is stored
133  * in the private data structure of the driver to be used by other driver
136  * Return: 0 if OK, -ve on error.
143 	res = gpio_request_list_by_name(dev, "ver-gpios", priv->ver_gpios,  in _read_hwversion()
144 					ARRAY_SIZE(priv->ver_gpios),  in _read_hwversion()
147 		debug("%s: Error getting GPIO list 'ver-gpios' (err = %d)\n",  in _read_hwversion()
148 		      dev->name, res);  in _read_hwversion()
149 		return -ENODEV;  in _read_hwversion()
152 	res = dm_gpio_get_values_as_int(priv->ver_gpios,  in _read_hwversion()
153 					ARRAY_SIZE(priv->ver_gpios));  in _read_hwversion()
156 		      dev->name, res);  in _read_hwversion()
160 	priv->hwversion = res;  in _read_hwversion()
162 	res = gpio_free_list(dev, priv->ver_gpios, ARRAY_SIZE(priv->ver_gpios));  in _read_hwversion()
165 		      dev->name, res);  in _read_hwversion()
179 		      dev->name, res);  in board_gazerbeam_detect()
186 		      dev->name, res);  in board_gazerbeam_detect()
199 		*val = priv->multichannel;  in board_gazerbeam_get_int()
202 		*val = priv->variant;  in board_gazerbeam_get_int()
205 		*val = priv->hwversion;  in board_gazerbeam_get_int()
208 		debug("%s: Integer value %d unknown\n", dev->name, id);  in board_gazerbeam_get_int()
209 		return -EINVAL;  in board_gazerbeam_get_int()
230 	gpio_num = gpio_request_list_by_name(dev, "reset-gpios",  in board_gazerbeam_probe()
231 					     priv->reset_gpios,  in board_gazerbeam_probe()
232 					     ARRAY_SIZE(priv->reset_gpios),  in board_gazerbeam_probe()
236 		debug("%s: Error getting GPIO list 'reset-gpios' (err = %d)\n",  in board_gazerbeam_probe()
237 		      dev->name, gpio_num);  in board_gazerbeam_probe()
241 	/* Set startup-finished GPIOs */  in board_gazerbeam_probe()
242 	for (i = 0; i < ARRAY_SIZE(priv->reset_gpios); i++) {  in board_gazerbeam_probe()
243 		int res = dm_gpio_set_value(&priv->reset_gpios[i], 0);  in board_gazerbeam_probe()
247 			      dev->name, i, res);  in board_gazerbeam_probe()