| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| John Crispin | 2910 | 96.36% | 5 | 35.71% |
| Sherman Yin | 49 | 1.62% | 1 | 7.14% |
| Thomas Langer | 24 | 0.79% | 1 | 7.14% |
| Thierry Reding | 11 | 0.36% | 1 | 7.14% |
| Nishka Dasgupta | 11 | 0.36% | 1 | 7.14% |
| Geert Uytterhoeven | 10 | 0.33% | 1 | 7.14% |
| Thomas Gleixner | 2 | 0.07% | 1 | 7.14% |
| Linus Walleij | 1 | 0.03% | 1 | 7.14% |
| Laurent Pinchart | 1 | 0.03% | 1 | 7.14% |
| Axel Lin | 1 | 0.03% | 1 | 7.14% |
| Total | 3020 | 14 |
// SPDX-License-Identifier: GPL-2.0-only /* * linux/drivers/pinctrl/pinmux-falcon.c * based on linux/drivers/pinctrl/pinmux-pxa910.c * * Copyright (C) 2012 Thomas Langer <thomas.langer@lantiq.com> * Copyright (C) 2012 John Crispin <john@phrozen.org> */ #include <linux/gpio/driver.h> #include <linux/interrupt.h> #include <linux/slab.h> #include <linux/export.h> #include <linux/err.h> #include <linux/module.h> #include <linux/of.h> #include <linux/of_platform.h> #include <linux/of_address.h> #include <linux/of_gpio.h> #include <linux/platform_device.h> #include "pinctrl-lantiq.h" #include <lantiq_soc.h> /* Multiplexer Control Register */ #define LTQ_PADC_MUX(x) (x * 0x4) /* Pull Up Enable Register */ #define LTQ_PADC_PUEN 0x80 /* Pull Down Enable Register */ #define LTQ_PADC_PDEN 0x84 /* Slew Rate Control Register */ #define LTQ_PADC_SRC 0x88 /* Drive Current Control Register */ #define LTQ_PADC_DCC 0x8C /* Pad Control Availability Register */ #define LTQ_PADC_AVAIL 0xF0 #define pad_r32(p, reg) ltq_r32(p + reg) #define pad_w32(p, val, reg) ltq_w32(val, p + reg) #define pad_w32_mask(c, clear, set, reg) \ pad_w32(c, (pad_r32(c, reg) & ~(clear)) | (set), reg) #define pad_getbit(m, r, p) (!!(ltq_r32(m + r) & (1 << p))) #define PORTS 5 #define PINS 32 #define PORT(x) (x / PINS) #define PORT_PIN(x) (x % PINS) #define MFP_FALCON(a, f0, f1, f2, f3) \ { \ .name = #a, \ .pin = a, \ .func = { \ FALCON_MUX_##f0, \ FALCON_MUX_##f1, \ FALCON_MUX_##f2, \ FALCON_MUX_##f3, \ }, \ } #define GRP_MUX(a, m, p) \ { \ .name = a, \ .mux = FALCON_MUX_##m, \ .pins = p, \ .npins = ARRAY_SIZE(p), \ } enum falcon_mux { FALCON_MUX_GPIO = 0, FALCON_MUX_RST, FALCON_MUX_NTR, FALCON_MUX_PPS, FALCON_MUX_MDIO, FALCON_MUX_LED, FALCON_MUX_SPI, FALCON_MUX_ASC, FALCON_MUX_I2C, FALCON_MUX_HOSTIF, FALCON_MUX_SLIC, FALCON_MUX_JTAG, FALCON_MUX_PCM, FALCON_MUX_MII, FALCON_MUX_PHY, FALCON_MUX_NONE = 0xffff, }; static struct pinctrl_pin_desc falcon_pads[PORTS * PINS]; static int pad_count[PORTS]; static void lantiq_load_pin_desc(struct pinctrl_pin_desc *d, int bank, int len) { int base = bank * PINS; int i; for (i = 0; i < len; i++) { d[i].number = base + i; d[i].name = kasprintf(GFP_KERNEL, "io%d", base + i); } pad_count[bank] = len; } static struct ltq_mfp_pin falcon_mfp[] = { /* pin f0 f1 f2 f3 */ MFP_FALCON(GPIO0, RST, GPIO, NONE, NONE), MFP_FALCON(GPIO1, GPIO, GPIO, NONE, NONE), MFP_FALCON(GPIO2, GPIO, GPIO, NONE, NONE), MFP_FALCON(GPIO3, GPIO, GPIO, NONE, NONE), MFP_FALCON(GPIO4, NTR, GPIO, NONE, NONE), MFP_FALCON(GPIO5, NTR, GPIO, PPS, NONE), MFP_FALCON(GPIO6, RST, GPIO, NONE, NONE), MFP_FALCON(GPIO7, MDIO, GPIO, NONE, NONE), MFP_FALCON(GPIO8, MDIO, GPIO, NONE, NONE), MFP_FALCON(GPIO9, LED, GPIO, NONE, NONE), MFP_FALCON(GPIO10, LED, GPIO, NONE, NONE), MFP_FALCON(GPIO11, LED, GPIO, NONE, NONE), MFP_FALCON(GPIO12, LED, GPIO, NONE, NONE), MFP_FALCON(GPIO13, LED, GPIO, NONE, NONE), MFP_FALCON(GPIO14, LED, GPIO, NONE, NONE), MFP_FALCON(GPIO32, ASC, GPIO, NONE, NONE), MFP_FALCON(GPIO33, ASC, GPIO, NONE, NONE), MFP_FALCON(GPIO34, SPI, GPIO, NONE, NONE), MFP_FALCON(GPIO35, SPI, GPIO, NONE, NONE), MFP_FALCON(GPIO36, SPI, GPIO, NONE, NONE), MFP_FALCON(GPIO37, SPI, GPIO, NONE, NONE), MFP_FALCON(GPIO38, SPI, GPIO, NONE, NONE), MFP_FALCON(GPIO39, I2C, GPIO, NONE, NONE), MFP_FALCON(GPIO40, I2C, GPIO, NONE, NONE), MFP_FALCON(GPIO41, HOSTIF, GPIO, HOSTIF, JTAG), MFP_FALCON(GPIO42, HOSTIF, GPIO, HOSTIF, NONE), MFP_FALCON(GPIO43, SLIC, GPIO, NONE, NONE), MFP_FALCON(GPIO44, SLIC, GPIO, PCM, ASC), MFP_FALCON(GPIO45, SLIC, GPIO, PCM, ASC), MFP_FALCON(GPIO64, MII, GPIO, NONE, NONE), MFP_FALCON(GPIO65, MII, GPIO, NONE, NONE), MFP_FALCON(GPIO66, MII, GPIO, NONE, NONE), MFP_FALCON(GPIO67, MII, GPIO, NONE, NONE), MFP_FALCON(GPIO68, MII, GPIO, NONE, NONE), MFP_FALCON(GPIO69, MII, GPIO, NONE, NONE), MFP_FALCON(GPIO70, MII, GPIO, NONE, NONE), MFP_FALCON(GPIO71, MII, GPIO, NONE, NONE), MFP_FALCON(GPIO72, MII, GPIO, NONE, NONE), MFP_FALCON(GPIO73, MII, GPIO, NONE, NONE), MFP_FALCON(GPIO74, MII, GPIO, NONE, NONE), MFP_FALCON(GPIO75, MII, GPIO, NONE, NONE), MFP_FALCON(GPIO76, MII, GPIO, NONE, NONE), MFP_FALCON(GPIO77, MII, GPIO, NONE, NONE), MFP_FALCON(GPIO78, MII, GPIO, NONE, NONE), MFP_FALCON(GPIO79, MII, GPIO, NONE, NONE), MFP_FALCON(GPIO80, MII, GPIO, NONE, NONE), MFP_FALCON(GPIO81, MII, GPIO, NONE, NONE), MFP_FALCON(GPIO82, MII, GPIO, NONE, NONE), MFP_FALCON(GPIO83, MII, GPIO, NONE, NONE), MFP_FALCON(GPIO84, MII, GPIO, NONE, NONE), MFP_FALCON(GPIO85, MII, GPIO, NONE, NONE), MFP_FALCON(GPIO86, MII, GPIO, NONE, NONE), MFP_FALCON(GPIO87, MII, GPIO, NONE, NONE), MFP_FALCON(GPIO88, PHY, GPIO, NONE, NONE), }; static const unsigned pins_por[] = {GPIO0}; static const unsigned pins_ntr[] = {GPIO4}; static const unsigned pins_ntr8k[] = {GPIO5}; static const unsigned pins_pps[] = {GPIO5}; static const unsigned pins_hrst[] = {GPIO6}; static const unsigned pins_mdio[] = {GPIO7, GPIO8}; static const unsigned pins_bled[] = {GPIO9, GPIO10, GPIO11, GPIO12, GPIO13, GPIO14}; static const unsigned pins_asc0[] = {GPIO32, GPIO33}; static const unsigned pins_spi[] = {GPIO34, GPIO35, GPIO36}; static const unsigned pins_spi_cs0[] = {GPIO37}; static const unsigned pins_spi_cs1[] = {GPIO38}; static const unsigned pins_i2c[] = {GPIO39, GPIO40}; static const unsigned pins_jtag[] = {GPIO41}; static const unsigned pins_slic[] = {GPIO43, GPIO44, GPIO45}; static const unsigned pins_pcm[] = {GPIO44, GPIO45}; static const unsigned pins_asc1[] = {GPIO44, GPIO45}; static struct ltq_pin_group falcon_grps[] = { GRP_MUX("por", RST, pins_por), GRP_MUX("ntr", NTR, pins_ntr), GRP_MUX("ntr8k", NTR, pins_ntr8k), GRP_MUX("pps", PPS, pins_pps), GRP_MUX("hrst", RST, pins_hrst), GRP_MUX("mdio", MDIO, pins_mdio), GRP_MUX("bootled", LED, pins_bled), GRP_MUX("asc0", ASC, pins_asc0), GRP_MUX("spi", SPI, pins_spi), GRP_MUX("spi cs0", SPI, pins_spi_cs0), GRP_MUX("spi cs1", SPI, pins_spi_cs1), GRP_MUX("i2c", I2C, pins_i2c), GRP_MUX("jtag", JTAG, pins_jtag), GRP_MUX("slic", SLIC, pins_slic), GRP_MUX("pcm", PCM, pins_pcm), GRP_MUX("asc1", ASC, pins_asc1), }; static const char * const ltq_rst_grps[] = {"por", "hrst"}; static const char * const ltq_ntr_grps[] = {"ntr", "ntr8k", "pps"}; static const char * const ltq_mdio_grps[] = {"mdio"}; static const char * const ltq_bled_grps[] = {"bootled"}; static const char * const ltq_asc_grps[] = {"asc0", "asc1"}; static const char * const ltq_spi_grps[] = {"spi", "spi cs0", "spi cs1"}; static const char * const ltq_i2c_grps[] = {"i2c"}; static const char * const ltq_jtag_grps[] = {"jtag"}; static const char * const ltq_slic_grps[] = {"slic"}; static const char * const ltq_pcm_grps[] = {"pcm"}; static struct ltq_pmx_func falcon_funcs[] = { {"rst", ARRAY_AND_SIZE(ltq_rst_grps)}, {"ntr", ARRAY_AND_SIZE(ltq_ntr_grps)}, {"mdio", ARRAY_AND_SIZE(ltq_mdio_grps)}, {"led", ARRAY_AND_SIZE(ltq_bled_grps)}, {"asc", ARRAY_AND_SIZE(ltq_asc_grps)}, {"spi", ARRAY_AND_SIZE(ltq_spi_grps)}, {"i2c", ARRAY_AND_SIZE(ltq_i2c_grps)}, {"jtag", ARRAY_AND_SIZE(ltq_jtag_grps)}, {"slic", ARRAY_AND_SIZE(ltq_slic_grps)}, {"pcm", ARRAY_AND_SIZE(ltq_pcm_grps)}, }; /* --------- pinconf related code --------- */ static int falcon_pinconf_group_get(struct pinctrl_dev *pctrldev, unsigned group, unsigned long *config) { return -ENOTSUPP; } static int falcon_pinconf_group_set(struct pinctrl_dev *pctrldev, unsigned group, unsigned long *configs, unsigned num_configs) { return -ENOTSUPP; } static int falcon_pinconf_get(struct pinctrl_dev *pctrldev, unsigned pin, unsigned long *config) { struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev); enum ltq_pinconf_param param = LTQ_PINCONF_UNPACK_PARAM(*config); void __iomem *mem = info->membase[PORT(pin)]; switch (param) { case LTQ_PINCONF_PARAM_DRIVE_CURRENT: *config = LTQ_PINCONF_PACK(param, !!pad_getbit(mem, LTQ_PADC_DCC, PORT_PIN(pin))); break; case LTQ_PINCONF_PARAM_SLEW_RATE: *config = LTQ_PINCONF_PACK(param, !!pad_getbit(mem, LTQ_PADC_SRC, PORT_PIN(pin))); break; case LTQ_PINCONF_PARAM_PULL: if (pad_getbit(mem, LTQ_PADC_PDEN, PORT_PIN(pin))) *config = LTQ_PINCONF_PACK(param, 1); else if (pad_getbit(mem, LTQ_PADC_PUEN, PORT_PIN(pin))) *config = LTQ_PINCONF_PACK(param, 2); else *config = LTQ_PINCONF_PACK(param, 0); break; default: return -ENOTSUPP; } return 0; } static int falcon_pinconf_set(struct pinctrl_dev *pctrldev, unsigned pin, unsigned long *configs, unsigned num_configs) { enum ltq_pinconf_param param; int arg; struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev); void __iomem *mem = info->membase[PORT(pin)]; u32 reg; int i; for (i = 0; i < num_configs; i++) { param = LTQ_PINCONF_UNPACK_PARAM(configs[i]); arg = LTQ_PINCONF_UNPACK_ARG(configs[i]); switch (param) { case LTQ_PINCONF_PARAM_DRIVE_CURRENT: reg = LTQ_PADC_DCC; break; case LTQ_PINCONF_PARAM_SLEW_RATE: reg = LTQ_PADC_SRC; break; case LTQ_PINCONF_PARAM_PULL: if (arg == 1) reg = LTQ_PADC_PDEN; else reg = LTQ_PADC_PUEN; break; default: pr_err("%s: Invalid config param %04x\n", pinctrl_dev_get_name(pctrldev), param); return -ENOTSUPP; } pad_w32(mem, BIT(PORT_PIN(pin)), reg); if (!(pad_r32(mem, reg) & BIT(PORT_PIN(pin)))) return -ENOTSUPP; } /* for each config */ return 0; } static void falcon_pinconf_dbg_show(struct pinctrl_dev *pctrldev, struct seq_file *s, unsigned offset) { unsigned long config; struct pin_desc *desc; struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev); int port = PORT(offset); seq_printf(s, " (port %d) mux %d -- ", port, pad_r32(info->membase[port], LTQ_PADC_MUX(PORT_PIN(offset)))); config = LTQ_PINCONF_PACK(LTQ_PINCONF_PARAM_PULL, 0); if (!falcon_pinconf_get(pctrldev, offset, &config)) seq_printf(s, "pull %d ", (int)LTQ_PINCONF_UNPACK_ARG(config)); config = LTQ_PINCONF_PACK(LTQ_PINCONF_PARAM_DRIVE_CURRENT, 0); if (!falcon_pinconf_get(pctrldev, offset, &config)) seq_printf(s, "drive-current %d ", (int)LTQ_PINCONF_UNPACK_ARG(config)); config = LTQ_PINCONF_PACK(LTQ_PINCONF_PARAM_SLEW_RATE, 0); if (!falcon_pinconf_get(pctrldev, offset, &config)) seq_printf(s, "slew-rate %d ", (int)LTQ_PINCONF_UNPACK_ARG(config)); desc = pin_desc_get(pctrldev, offset); if (desc) { if (desc->gpio_owner) seq_printf(s, " owner: %s", desc->gpio_owner); } else { seq_printf(s, " not registered"); } } static void falcon_pinconf_group_dbg_show(struct pinctrl_dev *pctrldev, struct seq_file *s, unsigned selector) { } static const struct pinconf_ops falcon_pinconf_ops = { .pin_config_get = falcon_pinconf_get, .pin_config_set = falcon_pinconf_set, .pin_config_group_get = falcon_pinconf_group_get, .pin_config_group_set = falcon_pinconf_group_set, .pin_config_dbg_show = falcon_pinconf_dbg_show, .pin_config_group_dbg_show = falcon_pinconf_group_dbg_show, }; static struct pinctrl_desc falcon_pctrl_desc = { .owner = THIS_MODULE, .pins = falcon_pads, .confops = &falcon_pinconf_ops, }; static inline int falcon_mux_apply(struct pinctrl_dev *pctrldev, int mfp, int mux) { struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev); int port = PORT(info->mfp[mfp].pin); if ((port >= PORTS) || (!info->membase[port])) return -ENODEV; pad_w32(info->membase[port], mux, LTQ_PADC_MUX(PORT_PIN(info->mfp[mfp].pin))); return 0; } static const struct ltq_cfg_param falcon_cfg_params[] = { {"lantiq,pull", LTQ_PINCONF_PARAM_PULL}, {"lantiq,drive-current", LTQ_PINCONF_PARAM_DRIVE_CURRENT}, {"lantiq,slew-rate", LTQ_PINCONF_PARAM_SLEW_RATE}, }; static struct ltq_pinmux_info falcon_info = { .desc = &falcon_pctrl_desc, .apply_mux = falcon_mux_apply, .params = falcon_cfg_params, .num_params = ARRAY_SIZE(falcon_cfg_params), }; /* --------- register the pinctrl layer --------- */ int pinctrl_falcon_get_range_size(int id) { u32 avail; if ((id >= PORTS) || (!falcon_info.membase[id])) return -EINVAL; avail = pad_r32(falcon_info.membase[id], LTQ_PADC_AVAIL); return fls(avail); } void pinctrl_falcon_add_gpio_range(struct pinctrl_gpio_range *range) { pinctrl_add_gpio_range(falcon_info.pctrl, range); } static int pinctrl_falcon_probe(struct platform_device *pdev) { struct device_node *np; int pad_count = 0; int ret = 0; /* load and remap the pad resources of the different banks */ for_each_compatible_node(np, NULL, "lantiq,pad-falcon") { struct platform_device *ppdev = of_find_device_by_node(np); const __be32 *bank = of_get_property(np, "lantiq,bank", NULL); struct resource res; u32 avail; int pins; if (!of_device_is_available(np)) continue; if (!ppdev) { dev_err(&pdev->dev, "failed to find pad pdev\n"); continue; } if (!bank || *bank >= PORTS) continue; if (of_address_to_resource(np, 0, &res)) continue; falcon_info.clk[*bank] = clk_get(&ppdev->dev, NULL); if (IS_ERR(falcon_info.clk[*bank])) { dev_err(&ppdev->dev, "failed to get clock\n"); of_node_put(np) return PTR_ERR(falcon_info.clk[*bank]); } falcon_info.membase[*bank] = devm_ioremap_resource(&pdev->dev, &res); if (IS_ERR(falcon_info.membase[*bank])) { of_node_put(np); return PTR_ERR(falcon_info.membase[*bank]); } avail = pad_r32(falcon_info.membase[*bank], LTQ_PADC_AVAIL); pins = fls(avail); lantiq_load_pin_desc(&falcon_pads[pad_count], *bank, pins); pad_count += pins; clk_enable(falcon_info.clk[*bank]); dev_dbg(&pdev->dev, "found %s with %d pads\n", res.name, pins); } dev_dbg(&pdev->dev, "found a total of %d pads\n", pad_count); falcon_pctrl_desc.name = dev_name(&pdev->dev); falcon_pctrl_desc.npins = pad_count; falcon_info.mfp = falcon_mfp; falcon_info.num_mfp = ARRAY_SIZE(falcon_mfp); falcon_info.grps = falcon_grps; falcon_info.num_grps = ARRAY_SIZE(falcon_grps); falcon_info.funcs = falcon_funcs; falcon_info.num_funcs = ARRAY_SIZE(falcon_funcs); ret = ltq_pinctrl_register(pdev, &falcon_info); if (!ret) dev_info(&pdev->dev, "Init done\n"); return ret; } static const struct of_device_id falcon_match[] = { { .compatible = "lantiq,pinctrl-falcon" }, {}, }; MODULE_DEVICE_TABLE(of, falcon_match); static struct platform_driver pinctrl_falcon_driver = { .probe = pinctrl_falcon_probe, .driver = { .name = "pinctrl-falcon", .of_match_table = falcon_match, }, }; int __init pinctrl_falcon_init(void) { return platform_driver_register(&pinctrl_falcon_driver); } core_initcall_sync(pinctrl_falcon_init);
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