1deda8287e1a602393b052c80b815b3706987b3daViresh Kumar/* 2deda8287e1a602393b052c80b815b3706987b3daViresh Kumar * Driver for the ST Microelectronics SPEAr pinmux 3deda8287e1a602393b052c80b815b3706987b3daViresh Kumar * 4deda8287e1a602393b052c80b815b3706987b3daViresh Kumar * Copyright (C) 2012 ST Microelectronics 510d8935f46e5028847b179757ecbf9238b13d129Viresh Kumar * Viresh Kumar <viresh.linux@gmail.com> 6deda8287e1a602393b052c80b815b3706987b3daViresh Kumar * 7deda8287e1a602393b052c80b815b3706987b3daViresh Kumar * Inspired from: 8deda8287e1a602393b052c80b815b3706987b3daViresh Kumar * - U300 Pinctl drivers 9deda8287e1a602393b052c80b815b3706987b3daViresh Kumar * - Tegra Pinctl drivers 10deda8287e1a602393b052c80b815b3706987b3daViresh Kumar * 11deda8287e1a602393b052c80b815b3706987b3daViresh Kumar * This file is licensed under the terms of the GNU General Public 12deda8287e1a602393b052c80b815b3706987b3daViresh Kumar * License version 2. This program is licensed "as is" without any 13deda8287e1a602393b052c80b815b3706987b3daViresh Kumar * warranty of any kind, whether express or implied. 14deda8287e1a602393b052c80b815b3706987b3daViresh Kumar */ 15deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 16deda8287e1a602393b052c80b815b3706987b3daViresh Kumar#include <linux/err.h> 17deda8287e1a602393b052c80b815b3706987b3daViresh Kumar#include <linux/module.h> 18deda8287e1a602393b052c80b815b3706987b3daViresh Kumar#include <linux/of.h> 19deda8287e1a602393b052c80b815b3706987b3daViresh Kumar#include <linux/of_address.h> 20f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar#include <linux/of_gpio.h> 21deda8287e1a602393b052c80b815b3706987b3daViresh Kumar#include <linux/pinctrl/machine.h> 22deda8287e1a602393b052c80b815b3706987b3daViresh Kumar#include <linux/pinctrl/pinctrl.h> 23deda8287e1a602393b052c80b815b3706987b3daViresh Kumar#include <linux/pinctrl/pinmux.h> 24deda8287e1a602393b052c80b815b3706987b3daViresh Kumar#include <linux/platform_device.h> 25deda8287e1a602393b052c80b815b3706987b3daViresh Kumar#include <linux/slab.h> 26deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 27deda8287e1a602393b052c80b815b3706987b3daViresh Kumar#include "pinctrl-spear.h" 28deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 29deda8287e1a602393b052c80b815b3706987b3daViresh Kumar#define DRIVER_NAME "spear-pinmux" 30deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 31f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumarstatic void muxregs_endisable(struct spear_pmx *pmx, 32f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar struct spear_muxreg *muxregs, u8 count, bool enable) 33f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar{ 34f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar struct spear_muxreg *muxreg; 35f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar u32 val, temp, j; 36f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar 37f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar for (j = 0; j < count; j++) { 38f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar muxreg = &muxregs[j]; 39f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar 40f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar val = pmx_readl(pmx, muxreg->reg); 41f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar val &= ~muxreg->mask; 42f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar 43f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar if (enable) 44f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar temp = muxreg->val; 45f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar else 46f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar temp = ~muxreg->val; 47f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar 48f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar val |= muxreg->mask & temp; 49f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar pmx_writel(pmx, val, muxreg->reg); 50f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar } 51f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar} 52f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar 53deda8287e1a602393b052c80b815b3706987b3daViresh Kumarstatic int set_mode(struct spear_pmx *pmx, int mode) 54deda8287e1a602393b052c80b815b3706987b3daViresh Kumar{ 55deda8287e1a602393b052c80b815b3706987b3daViresh Kumar struct spear_pmx_mode *pmx_mode = NULL; 56deda8287e1a602393b052c80b815b3706987b3daViresh Kumar int i; 57deda8287e1a602393b052c80b815b3706987b3daViresh Kumar u32 val; 58deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 59deda8287e1a602393b052c80b815b3706987b3daViresh Kumar if (!pmx->machdata->pmx_modes || !pmx->machdata->npmx_modes) 60deda8287e1a602393b052c80b815b3706987b3daViresh Kumar return -EINVAL; 61deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 62deda8287e1a602393b052c80b815b3706987b3daViresh Kumar for (i = 0; i < pmx->machdata->npmx_modes; i++) { 63deda8287e1a602393b052c80b815b3706987b3daViresh Kumar if (pmx->machdata->pmx_modes[i]->mode == (1 << mode)) { 64deda8287e1a602393b052c80b815b3706987b3daViresh Kumar pmx_mode = pmx->machdata->pmx_modes[i]; 65deda8287e1a602393b052c80b815b3706987b3daViresh Kumar break; 66deda8287e1a602393b052c80b815b3706987b3daViresh Kumar } 67deda8287e1a602393b052c80b815b3706987b3daViresh Kumar } 68deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 69deda8287e1a602393b052c80b815b3706987b3daViresh Kumar if (!pmx_mode) 70deda8287e1a602393b052c80b815b3706987b3daViresh Kumar return -EINVAL; 71deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 72deda8287e1a602393b052c80b815b3706987b3daViresh Kumar val = pmx_readl(pmx, pmx_mode->reg); 73deda8287e1a602393b052c80b815b3706987b3daViresh Kumar val &= ~pmx_mode->mask; 74deda8287e1a602393b052c80b815b3706987b3daViresh Kumar val |= pmx_mode->val; 75deda8287e1a602393b052c80b815b3706987b3daViresh Kumar pmx_writel(pmx, val, pmx_mode->reg); 76deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 77deda8287e1a602393b052c80b815b3706987b3daViresh Kumar pmx->machdata->mode = pmx_mode->mode; 78deda8287e1a602393b052c80b815b3706987b3daViresh Kumar dev_info(pmx->dev, "Configured Mode: %s with id: %x\n\n", 79deda8287e1a602393b052c80b815b3706987b3daViresh Kumar pmx_mode->name ? pmx_mode->name : "no_name", 80deda8287e1a602393b052c80b815b3706987b3daViresh Kumar pmx_mode->reg); 81deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 82deda8287e1a602393b052c80b815b3706987b3daViresh Kumar return 0; 83deda8287e1a602393b052c80b815b3706987b3daViresh Kumar} 84deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 85150632b09aadf1996f5cb6c0c2620d63a01fe2deGreg Kroah-Hartmanvoid pmx_init_gpio_pingroup_addr(struct spear_gpio_pingroup *gpio_pingroup, 86150632b09aadf1996f5cb6c0c2620d63a01fe2deGreg Kroah-Hartman unsigned count, u16 reg) 87f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar{ 884484d0b17982af8d7af2c21bcc67e47f4237ce70Axel Lin int i, j; 89f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar 904484d0b17982af8d7af2c21bcc67e47f4237ce70Axel Lin for (i = 0; i < count; i++) 914484d0b17982af8d7af2c21bcc67e47f4237ce70Axel Lin for (j = 0; j < gpio_pingroup[i].nmuxregs; j++) 92f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar gpio_pingroup[i].muxregs[j].reg = reg; 93f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar} 94f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar 95150632b09aadf1996f5cb6c0c2620d63a01fe2deGreg Kroah-Hartmanvoid pmx_init_addr(struct spear_pinctrl_machdata *machdata, u16 reg) 96deda8287e1a602393b052c80b815b3706987b3daViresh Kumar{ 97deda8287e1a602393b052c80b815b3706987b3daViresh Kumar struct spear_pingroup *pgroup; 98deda8287e1a602393b052c80b815b3706987b3daViresh Kumar struct spear_modemux *modemux; 99deda8287e1a602393b052c80b815b3706987b3daViresh Kumar int i, j, group; 100deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 101deda8287e1a602393b052c80b815b3706987b3daViresh Kumar for (group = 0; group < machdata->ngroups; group++) { 102deda8287e1a602393b052c80b815b3706987b3daViresh Kumar pgroup = machdata->groups[group]; 103deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 104deda8287e1a602393b052c80b815b3706987b3daViresh Kumar for (i = 0; i < pgroup->nmodemuxs; i++) { 105deda8287e1a602393b052c80b815b3706987b3daViresh Kumar modemux = &pgroup->modemuxs[i]; 106deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 107deda8287e1a602393b052c80b815b3706987b3daViresh Kumar for (j = 0; j < modemux->nmuxregs; j++) 108deda8287e1a602393b052c80b815b3706987b3daViresh Kumar if (modemux->muxregs[j].reg == 0xFFFF) 109deda8287e1a602393b052c80b815b3706987b3daViresh Kumar modemux->muxregs[j].reg = reg; 110deda8287e1a602393b052c80b815b3706987b3daViresh Kumar } 111deda8287e1a602393b052c80b815b3706987b3daViresh Kumar } 112deda8287e1a602393b052c80b815b3706987b3daViresh Kumar} 113deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 114deda8287e1a602393b052c80b815b3706987b3daViresh Kumarstatic int spear_pinctrl_get_groups_cnt(struct pinctrl_dev *pctldev) 115deda8287e1a602393b052c80b815b3706987b3daViresh Kumar{ 116deda8287e1a602393b052c80b815b3706987b3daViresh Kumar struct spear_pmx *pmx = pinctrl_dev_get_drvdata(pctldev); 117deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 118deda8287e1a602393b052c80b815b3706987b3daViresh Kumar return pmx->machdata->ngroups; 119deda8287e1a602393b052c80b815b3706987b3daViresh Kumar} 120deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 121deda8287e1a602393b052c80b815b3706987b3daViresh Kumarstatic const char *spear_pinctrl_get_group_name(struct pinctrl_dev *pctldev, 122deda8287e1a602393b052c80b815b3706987b3daViresh Kumar unsigned group) 123deda8287e1a602393b052c80b815b3706987b3daViresh Kumar{ 124deda8287e1a602393b052c80b815b3706987b3daViresh Kumar struct spear_pmx *pmx = pinctrl_dev_get_drvdata(pctldev); 125deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 126deda8287e1a602393b052c80b815b3706987b3daViresh Kumar return pmx->machdata->groups[group]->name; 127deda8287e1a602393b052c80b815b3706987b3daViresh Kumar} 128deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 129deda8287e1a602393b052c80b815b3706987b3daViresh Kumarstatic int spear_pinctrl_get_group_pins(struct pinctrl_dev *pctldev, 130deda8287e1a602393b052c80b815b3706987b3daViresh Kumar unsigned group, const unsigned **pins, unsigned *num_pins) 131deda8287e1a602393b052c80b815b3706987b3daViresh Kumar{ 132deda8287e1a602393b052c80b815b3706987b3daViresh Kumar struct spear_pmx *pmx = pinctrl_dev_get_drvdata(pctldev); 133deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 134deda8287e1a602393b052c80b815b3706987b3daViresh Kumar *pins = pmx->machdata->groups[group]->pins; 135deda8287e1a602393b052c80b815b3706987b3daViresh Kumar *num_pins = pmx->machdata->groups[group]->npins; 136deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 137deda8287e1a602393b052c80b815b3706987b3daViresh Kumar return 0; 138deda8287e1a602393b052c80b815b3706987b3daViresh Kumar} 139deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 140deda8287e1a602393b052c80b815b3706987b3daViresh Kumarstatic void spear_pinctrl_pin_dbg_show(struct pinctrl_dev *pctldev, 141deda8287e1a602393b052c80b815b3706987b3daViresh Kumar struct seq_file *s, unsigned offset) 142deda8287e1a602393b052c80b815b3706987b3daViresh Kumar{ 143deda8287e1a602393b052c80b815b3706987b3daViresh Kumar seq_printf(s, " " DRIVER_NAME); 144deda8287e1a602393b052c80b815b3706987b3daViresh Kumar} 145deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 1469b2b1740e316a3e114974ffeb73b0ff630061b94Axel Linstatic int spear_pinctrl_dt_node_to_map(struct pinctrl_dev *pctldev, 1479b2b1740e316a3e114974ffeb73b0ff630061b94Axel Lin struct device_node *np_config, 1489b2b1740e316a3e114974ffeb73b0ff630061b94Axel Lin struct pinctrl_map **map, 1499b2b1740e316a3e114974ffeb73b0ff630061b94Axel Lin unsigned *num_maps) 150deda8287e1a602393b052c80b815b3706987b3daViresh Kumar{ 151deda8287e1a602393b052c80b815b3706987b3daViresh Kumar struct spear_pmx *pmx = pinctrl_dev_get_drvdata(pctldev); 152deda8287e1a602393b052c80b815b3706987b3daViresh Kumar struct device_node *np; 153deda8287e1a602393b052c80b815b3706987b3daViresh Kumar struct property *prop; 154deda8287e1a602393b052c80b815b3706987b3daViresh Kumar const char *function, *group; 155deda8287e1a602393b052c80b815b3706987b3daViresh Kumar int ret, index = 0, count = 0; 156deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 157deda8287e1a602393b052c80b815b3706987b3daViresh Kumar /* calculate number of maps required */ 158deda8287e1a602393b052c80b815b3706987b3daViresh Kumar for_each_child_of_node(np_config, np) { 159deda8287e1a602393b052c80b815b3706987b3daViresh Kumar ret = of_property_read_string(np, "st,function", &function); 160deda8287e1a602393b052c80b815b3706987b3daViresh Kumar if (ret < 0) 161deda8287e1a602393b052c80b815b3706987b3daViresh Kumar return ret; 162deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 163deda8287e1a602393b052c80b815b3706987b3daViresh Kumar ret = of_property_count_strings(np, "st,pins"); 164deda8287e1a602393b052c80b815b3706987b3daViresh Kumar if (ret < 0) 165deda8287e1a602393b052c80b815b3706987b3daViresh Kumar return ret; 166deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 167deda8287e1a602393b052c80b815b3706987b3daViresh Kumar count += ret; 168deda8287e1a602393b052c80b815b3706987b3daViresh Kumar } 169deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 170deda8287e1a602393b052c80b815b3706987b3daViresh Kumar if (!count) { 171deda8287e1a602393b052c80b815b3706987b3daViresh Kumar dev_err(pmx->dev, "No child nodes passed via DT\n"); 172deda8287e1a602393b052c80b815b3706987b3daViresh Kumar return -ENODEV; 173deda8287e1a602393b052c80b815b3706987b3daViresh Kumar } 174deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 175deda8287e1a602393b052c80b815b3706987b3daViresh Kumar *map = kzalloc(sizeof(**map) * count, GFP_KERNEL); 176deda8287e1a602393b052c80b815b3706987b3daViresh Kumar if (!*map) 177deda8287e1a602393b052c80b815b3706987b3daViresh Kumar return -ENOMEM; 178deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 179deda8287e1a602393b052c80b815b3706987b3daViresh Kumar for_each_child_of_node(np_config, np) { 180deda8287e1a602393b052c80b815b3706987b3daViresh Kumar of_property_read_string(np, "st,function", &function); 181deda8287e1a602393b052c80b815b3706987b3daViresh Kumar of_property_for_each_string(np, "st,pins", prop, group) { 182deda8287e1a602393b052c80b815b3706987b3daViresh Kumar (*map)[index].type = PIN_MAP_TYPE_MUX_GROUP; 183deda8287e1a602393b052c80b815b3706987b3daViresh Kumar (*map)[index].data.mux.group = group; 184deda8287e1a602393b052c80b815b3706987b3daViresh Kumar (*map)[index].data.mux.function = function; 185deda8287e1a602393b052c80b815b3706987b3daViresh Kumar index++; 186deda8287e1a602393b052c80b815b3706987b3daViresh Kumar } 187deda8287e1a602393b052c80b815b3706987b3daViresh Kumar } 188deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 189deda8287e1a602393b052c80b815b3706987b3daViresh Kumar *num_maps = count; 190deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 191deda8287e1a602393b052c80b815b3706987b3daViresh Kumar return 0; 192deda8287e1a602393b052c80b815b3706987b3daViresh Kumar} 193deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 1949b2b1740e316a3e114974ffeb73b0ff630061b94Axel Linstatic void spear_pinctrl_dt_free_map(struct pinctrl_dev *pctldev, 1959b2b1740e316a3e114974ffeb73b0ff630061b94Axel Lin struct pinctrl_map *map, 1969b2b1740e316a3e114974ffeb73b0ff630061b94Axel Lin unsigned num_maps) 197deda8287e1a602393b052c80b815b3706987b3daViresh Kumar{ 198deda8287e1a602393b052c80b815b3706987b3daViresh Kumar kfree(map); 199deda8287e1a602393b052c80b815b3706987b3daViresh Kumar} 200deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 201022ab148d28e8466e45d28552224e3029f1cccd8Laurent Pinchartstatic const struct pinctrl_ops spear_pinctrl_ops = { 202deda8287e1a602393b052c80b815b3706987b3daViresh Kumar .get_groups_count = spear_pinctrl_get_groups_cnt, 203deda8287e1a602393b052c80b815b3706987b3daViresh Kumar .get_group_name = spear_pinctrl_get_group_name, 204deda8287e1a602393b052c80b815b3706987b3daViresh Kumar .get_group_pins = spear_pinctrl_get_group_pins, 205deda8287e1a602393b052c80b815b3706987b3daViresh Kumar .pin_dbg_show = spear_pinctrl_pin_dbg_show, 206deda8287e1a602393b052c80b815b3706987b3daViresh Kumar .dt_node_to_map = spear_pinctrl_dt_node_to_map, 207deda8287e1a602393b052c80b815b3706987b3daViresh Kumar .dt_free_map = spear_pinctrl_dt_free_map, 208deda8287e1a602393b052c80b815b3706987b3daViresh Kumar}; 209deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 210deda8287e1a602393b052c80b815b3706987b3daViresh Kumarstatic int spear_pinctrl_get_funcs_count(struct pinctrl_dev *pctldev) 211deda8287e1a602393b052c80b815b3706987b3daViresh Kumar{ 212deda8287e1a602393b052c80b815b3706987b3daViresh Kumar struct spear_pmx *pmx = pinctrl_dev_get_drvdata(pctldev); 213deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 214deda8287e1a602393b052c80b815b3706987b3daViresh Kumar return pmx->machdata->nfunctions; 215deda8287e1a602393b052c80b815b3706987b3daViresh Kumar} 216deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 217deda8287e1a602393b052c80b815b3706987b3daViresh Kumarstatic const char *spear_pinctrl_get_func_name(struct pinctrl_dev *pctldev, 218deda8287e1a602393b052c80b815b3706987b3daViresh Kumar unsigned function) 219deda8287e1a602393b052c80b815b3706987b3daViresh Kumar{ 220deda8287e1a602393b052c80b815b3706987b3daViresh Kumar struct spear_pmx *pmx = pinctrl_dev_get_drvdata(pctldev); 221deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 222deda8287e1a602393b052c80b815b3706987b3daViresh Kumar return pmx->machdata->functions[function]->name; 223deda8287e1a602393b052c80b815b3706987b3daViresh Kumar} 224deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 225deda8287e1a602393b052c80b815b3706987b3daViresh Kumarstatic int spear_pinctrl_get_func_groups(struct pinctrl_dev *pctldev, 226deda8287e1a602393b052c80b815b3706987b3daViresh Kumar unsigned function, const char *const **groups, 227deda8287e1a602393b052c80b815b3706987b3daViresh Kumar unsigned * const ngroups) 228deda8287e1a602393b052c80b815b3706987b3daViresh Kumar{ 229deda8287e1a602393b052c80b815b3706987b3daViresh Kumar struct spear_pmx *pmx = pinctrl_dev_get_drvdata(pctldev); 230deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 231deda8287e1a602393b052c80b815b3706987b3daViresh Kumar *groups = pmx->machdata->functions[function]->groups; 232deda8287e1a602393b052c80b815b3706987b3daViresh Kumar *ngroups = pmx->machdata->functions[function]->ngroups; 233deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 234deda8287e1a602393b052c80b815b3706987b3daViresh Kumar return 0; 235deda8287e1a602393b052c80b815b3706987b3daViresh Kumar} 236deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 237deda8287e1a602393b052c80b815b3706987b3daViresh Kumarstatic int spear_pinctrl_endisable(struct pinctrl_dev *pctldev, 238deda8287e1a602393b052c80b815b3706987b3daViresh Kumar unsigned function, unsigned group, bool enable) 239deda8287e1a602393b052c80b815b3706987b3daViresh Kumar{ 240deda8287e1a602393b052c80b815b3706987b3daViresh Kumar struct spear_pmx *pmx = pinctrl_dev_get_drvdata(pctldev); 241deda8287e1a602393b052c80b815b3706987b3daViresh Kumar const struct spear_pingroup *pgroup; 242deda8287e1a602393b052c80b815b3706987b3daViresh Kumar const struct spear_modemux *modemux; 243f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar int i; 244deda8287e1a602393b052c80b815b3706987b3daViresh Kumar bool found = false; 245deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 246deda8287e1a602393b052c80b815b3706987b3daViresh Kumar pgroup = pmx->machdata->groups[group]; 247deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 248deda8287e1a602393b052c80b815b3706987b3daViresh Kumar for (i = 0; i < pgroup->nmodemuxs; i++) { 249deda8287e1a602393b052c80b815b3706987b3daViresh Kumar modemux = &pgroup->modemuxs[i]; 250deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 251deda8287e1a602393b052c80b815b3706987b3daViresh Kumar /* SoC have any modes */ 252deda8287e1a602393b052c80b815b3706987b3daViresh Kumar if (pmx->machdata->modes_supported) { 253deda8287e1a602393b052c80b815b3706987b3daViresh Kumar if (!(pmx->machdata->mode & modemux->modes)) 254deda8287e1a602393b052c80b815b3706987b3daViresh Kumar continue; 255deda8287e1a602393b052c80b815b3706987b3daViresh Kumar } 256deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 257deda8287e1a602393b052c80b815b3706987b3daViresh Kumar found = true; 258f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar muxregs_endisable(pmx, modemux->muxregs, modemux->nmuxregs, 259f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar enable); 260deda8287e1a602393b052c80b815b3706987b3daViresh Kumar } 261deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 262deda8287e1a602393b052c80b815b3706987b3daViresh Kumar if (!found) { 263deda8287e1a602393b052c80b815b3706987b3daViresh Kumar dev_err(pmx->dev, "pinmux group: %s not supported\n", 264deda8287e1a602393b052c80b815b3706987b3daViresh Kumar pgroup->name); 265deda8287e1a602393b052c80b815b3706987b3daViresh Kumar return -ENODEV; 266deda8287e1a602393b052c80b815b3706987b3daViresh Kumar } 267deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 268deda8287e1a602393b052c80b815b3706987b3daViresh Kumar return 0; 269deda8287e1a602393b052c80b815b3706987b3daViresh Kumar} 270deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 27103e9f0cac5da6af85758276cb4624caf5911f2b9Linus Walleijstatic int spear_pinctrl_set_mux(struct pinctrl_dev *pctldev, unsigned function, 272deda8287e1a602393b052c80b815b3706987b3daViresh Kumar unsigned group) 273deda8287e1a602393b052c80b815b3706987b3daViresh Kumar{ 274deda8287e1a602393b052c80b815b3706987b3daViresh Kumar return spear_pinctrl_endisable(pctldev, function, group, true); 275deda8287e1a602393b052c80b815b3706987b3daViresh Kumar} 276deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 277f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar/* gpio with pinmux */ 278f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumarstatic struct spear_gpio_pingroup *get_gpio_pingroup(struct spear_pmx *pmx, 279f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar unsigned pin) 280f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar{ 281f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar struct spear_gpio_pingroup *gpio_pingroup; 2826f37b1b4d407d6abcd24c4519cd892903229cd95Axel Lin int i, j; 283f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar 284f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar if (!pmx->machdata->gpio_pingroups) 285f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar return NULL; 286f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar 2876f37b1b4d407d6abcd24c4519cd892903229cd95Axel Lin for (i = 0; i < pmx->machdata->ngpio_pingroups; i++) { 288f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar gpio_pingroup = &pmx->machdata->gpio_pingroups[i]; 289f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar 290f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar for (j = 0; j < gpio_pingroup->npins; j++) { 291f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar if (gpio_pingroup->pins[j] == pin) 292f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar return gpio_pingroup; 293f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar } 294f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar } 295f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar 2966f37b1b4d407d6abcd24c4519cd892903229cd95Axel Lin return NULL; 297f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar} 298f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar 299f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumarstatic int gpio_request_endisable(struct pinctrl_dev *pctldev, 300f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar struct pinctrl_gpio_range *range, unsigned offset, bool enable) 301f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar{ 302f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar struct spear_pmx *pmx = pinctrl_dev_get_drvdata(pctldev); 303826d6ca8f955c7a902e775acef3bdbfc93695b04Shiraz Hashim struct spear_pinctrl_machdata *machdata = pmx->machdata; 304f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar struct spear_gpio_pingroup *gpio_pingroup; 305f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar 306826d6ca8f955c7a902e775acef3bdbfc93695b04Shiraz Hashim /* 307826d6ca8f955c7a902e775acef3bdbfc93695b04Shiraz Hashim * Some SoC have configuration options applicable to group of pins, 308826d6ca8f955c7a902e775acef3bdbfc93695b04Shiraz Hashim * rather than a single pin. 309826d6ca8f955c7a902e775acef3bdbfc93695b04Shiraz Hashim */ 310f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar gpio_pingroup = get_gpio_pingroup(pmx, offset); 311f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar if (gpio_pingroup) 312f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar muxregs_endisable(pmx, gpio_pingroup->muxregs, 313f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar gpio_pingroup->nmuxregs, enable); 314f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar 315826d6ca8f955c7a902e775acef3bdbfc93695b04Shiraz Hashim /* 316826d6ca8f955c7a902e775acef3bdbfc93695b04Shiraz Hashim * SoC may need some extra configurations, or configurations for single 317826d6ca8f955c7a902e775acef3bdbfc93695b04Shiraz Hashim * pin 318826d6ca8f955c7a902e775acef3bdbfc93695b04Shiraz Hashim */ 319826d6ca8f955c7a902e775acef3bdbfc93695b04Shiraz Hashim if (machdata->gpio_request_endisable) 320826d6ca8f955c7a902e775acef3bdbfc93695b04Shiraz Hashim machdata->gpio_request_endisable(pmx, offset, enable); 321826d6ca8f955c7a902e775acef3bdbfc93695b04Shiraz Hashim 322f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar return 0; 323f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar} 324f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar 325f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumarstatic int gpio_request_enable(struct pinctrl_dev *pctldev, 326f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar struct pinctrl_gpio_range *range, unsigned offset) 327f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar{ 328f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar return gpio_request_endisable(pctldev, range, offset, true); 329f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar} 330f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar 331f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumarstatic void gpio_disable_free(struct pinctrl_dev *pctldev, 332f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar struct pinctrl_gpio_range *range, unsigned offset) 333f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar{ 334f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar gpio_request_endisable(pctldev, range, offset, false); 335f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar} 336f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar 337022ab148d28e8466e45d28552224e3029f1cccd8Laurent Pinchartstatic const struct pinmux_ops spear_pinmux_ops = { 338deda8287e1a602393b052c80b815b3706987b3daViresh Kumar .get_functions_count = spear_pinctrl_get_funcs_count, 339deda8287e1a602393b052c80b815b3706987b3daViresh Kumar .get_function_name = spear_pinctrl_get_func_name, 340deda8287e1a602393b052c80b815b3706987b3daViresh Kumar .get_function_groups = spear_pinctrl_get_func_groups, 34103e9f0cac5da6af85758276cb4624caf5911f2b9Linus Walleij .set_mux = spear_pinctrl_set_mux, 342f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar .gpio_request_enable = gpio_request_enable, 343f4f8e5635f398645d614dff5a07598651faf3eadViresh Kumar .gpio_disable_free = gpio_disable_free, 344deda8287e1a602393b052c80b815b3706987b3daViresh Kumar}; 345deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 346deda8287e1a602393b052c80b815b3706987b3daViresh Kumarstatic struct pinctrl_desc spear_pinctrl_desc = { 347deda8287e1a602393b052c80b815b3706987b3daViresh Kumar .name = DRIVER_NAME, 348deda8287e1a602393b052c80b815b3706987b3daViresh Kumar .pctlops = &spear_pinctrl_ops, 349deda8287e1a602393b052c80b815b3706987b3daViresh Kumar .pmxops = &spear_pinmux_ops, 350deda8287e1a602393b052c80b815b3706987b3daViresh Kumar .owner = THIS_MODULE, 351deda8287e1a602393b052c80b815b3706987b3daViresh Kumar}; 352deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 353150632b09aadf1996f5cb6c0c2620d63a01fe2deGreg Kroah-Hartmanint spear_pinctrl_probe(struct platform_device *pdev, 354150632b09aadf1996f5cb6c0c2620d63a01fe2deGreg Kroah-Hartman struct spear_pinctrl_machdata *machdata) 355deda8287e1a602393b052c80b815b3706987b3daViresh Kumar{ 356deda8287e1a602393b052c80b815b3706987b3daViresh Kumar struct device_node *np = pdev->dev.of_node; 357deda8287e1a602393b052c80b815b3706987b3daViresh Kumar struct resource *res; 358deda8287e1a602393b052c80b815b3706987b3daViresh Kumar struct spear_pmx *pmx; 359deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 360deda8287e1a602393b052c80b815b3706987b3daViresh Kumar if (!machdata) 361deda8287e1a602393b052c80b815b3706987b3daViresh Kumar return -ENODEV; 362deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 363deda8287e1a602393b052c80b815b3706987b3daViresh Kumar pmx = devm_kzalloc(&pdev->dev, sizeof(*pmx), GFP_KERNEL); 364deda8287e1a602393b052c80b815b3706987b3daViresh Kumar if (!pmx) { 365deda8287e1a602393b052c80b815b3706987b3daViresh Kumar dev_err(&pdev->dev, "Can't alloc spear_pmx\n"); 366deda8287e1a602393b052c80b815b3706987b3daViresh Kumar return -ENOMEM; 367deda8287e1a602393b052c80b815b3706987b3daViresh Kumar } 368deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 369dff5a99c2ae537cad2fc4df85ef3330a4ddf2c67Axel Lin res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 370dff5a99c2ae537cad2fc4df85ef3330a4ddf2c67Axel Lin pmx->vbase = devm_ioremap_resource(&pdev->dev, res); 371dff5a99c2ae537cad2fc4df85ef3330a4ddf2c67Axel Lin if (IS_ERR(pmx->vbase)) 372dff5a99c2ae537cad2fc4df85ef3330a4ddf2c67Axel Lin return PTR_ERR(pmx->vbase); 373deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 374deda8287e1a602393b052c80b815b3706987b3daViresh Kumar pmx->dev = &pdev->dev; 375deda8287e1a602393b052c80b815b3706987b3daViresh Kumar pmx->machdata = machdata; 376deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 377deda8287e1a602393b052c80b815b3706987b3daViresh Kumar /* configure mode, if supported by SoC */ 378deda8287e1a602393b052c80b815b3706987b3daViresh Kumar if (machdata->modes_supported) { 379deda8287e1a602393b052c80b815b3706987b3daViresh Kumar int mode = 0; 380deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 381deda8287e1a602393b052c80b815b3706987b3daViresh Kumar if (of_property_read_u32(np, "st,pinmux-mode", &mode)) { 382deda8287e1a602393b052c80b815b3706987b3daViresh Kumar dev_err(&pdev->dev, "OF: pinmux mode not passed\n"); 383deda8287e1a602393b052c80b815b3706987b3daViresh Kumar return -EINVAL; 384deda8287e1a602393b052c80b815b3706987b3daViresh Kumar } 385deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 386deda8287e1a602393b052c80b815b3706987b3daViresh Kumar if (set_mode(pmx, mode)) { 387deda8287e1a602393b052c80b815b3706987b3daViresh Kumar dev_err(&pdev->dev, "OF: Couldn't configure mode: %x\n", 388deda8287e1a602393b052c80b815b3706987b3daViresh Kumar mode); 389deda8287e1a602393b052c80b815b3706987b3daViresh Kumar return -EINVAL; 390deda8287e1a602393b052c80b815b3706987b3daViresh Kumar } 391deda8287e1a602393b052c80b815b3706987b3daViresh Kumar } 392deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 393deda8287e1a602393b052c80b815b3706987b3daViresh Kumar platform_set_drvdata(pdev, pmx); 394deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 395deda8287e1a602393b052c80b815b3706987b3daViresh Kumar spear_pinctrl_desc.pins = machdata->pins; 396deda8287e1a602393b052c80b815b3706987b3daViresh Kumar spear_pinctrl_desc.npins = machdata->npins; 397deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 398deda8287e1a602393b052c80b815b3706987b3daViresh Kumar pmx->pctl = pinctrl_register(&spear_pinctrl_desc, &pdev->dev, pmx); 3998003ae335ad29664171f178eb1a6ef89cc23f4e9Devendra Naga if (!pmx->pctl) { 400deda8287e1a602393b052c80b815b3706987b3daViresh Kumar dev_err(&pdev->dev, "Couldn't register pinctrl driver\n"); 4018003ae335ad29664171f178eb1a6ef89cc23f4e9Devendra Naga return -ENODEV; 402deda8287e1a602393b052c80b815b3706987b3daViresh Kumar } 403deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 404deda8287e1a602393b052c80b815b3706987b3daViresh Kumar return 0; 405deda8287e1a602393b052c80b815b3706987b3daViresh Kumar} 406deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 407f90f54b3f3c4d1c9168d5f8e97c6ac5b9ad25f5eBill Pembertonint spear_pinctrl_remove(struct platform_device *pdev) 408deda8287e1a602393b052c80b815b3706987b3daViresh Kumar{ 409deda8287e1a602393b052c80b815b3706987b3daViresh Kumar struct spear_pmx *pmx = platform_get_drvdata(pdev); 410deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 411deda8287e1a602393b052c80b815b3706987b3daViresh Kumar pinctrl_unregister(pmx->pctl); 412deda8287e1a602393b052c80b815b3706987b3daViresh Kumar 413deda8287e1a602393b052c80b815b3706987b3daViresh Kumar return 0; 414deda8287e1a602393b052c80b815b3706987b3daViresh Kumar} 415