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bfab27a1 GC |
1 | /******************************************************************************* |
2 | This contains the functions to handle the platform driver. | |
3 | ||
4 | Copyright (C) 2007-2011 STMicroelectronics Ltd | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify it | |
7 | under the terms and conditions of the GNU General Public License, | |
8 | version 2, as published by the Free Software Foundation. | |
9 | ||
10 | This program is distributed in the hope it will be useful, but WITHOUT | |
11 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
13 | more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License along with | |
16 | this program; if not, write to the Free Software Foundation, Inc., | |
17 | 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
18 | ||
19 | The full GNU General Public License is included in this distribution in | |
20 | the file called "COPYING". | |
21 | ||
22 | Author: Giuseppe Cavallaro <peppe.cavallaro@st.com> | |
23 | *******************************************************************************/ | |
24 | ||
25 | #include <linux/platform_device.h> | |
26 | #include <linux/io.h> | |
6a228452 SR |
27 | #include <linux/of.h> |
28 | #include <linux/of_net.h> | |
022066f5 | 29 | #include <linux/of_device.h> |
bfab27a1 GC |
30 | #include "stmmac.h" |
31 | ||
022066f5 | 32 | static const struct of_device_id stmmac_dt_ids[] = { |
af0bd4e9 CYT |
33 | #ifdef CONFIG_DWMAC_SUNXI |
34 | { .compatible = "allwinner,sun7i-a20-gmac", .data = &sun7i_gmac_data}, | |
d15891ca SK |
35 | #endif |
36 | #ifdef CONFIG_DWMAC_STI | |
37 | { .compatible = "st,stih415-dwmac", .data = &sti_gmac_data}, | |
38 | { .compatible = "st,stih416-dwmac", .data = &sti_gmac_data}, | |
39 | { .compatible = "st,stih127-dwmac", .data = &sti_gmac_data}, | |
af0bd4e9 | 40 | #endif |
022066f5 CYT |
41 | /* SoC specific glue layers should come before generic bindings */ |
42 | { .compatible = "st,spear600-gmac"}, | |
43 | { .compatible = "snps,dwmac-3.610"}, | |
44 | { .compatible = "snps,dwmac-3.70a"}, | |
45 | { .compatible = "snps,dwmac-3.710"}, | |
46 | { .compatible = "snps,dwmac"}, | |
47 | { /* sentinel */ } | |
48 | }; | |
49 | MODULE_DEVICE_TABLE(of, stmmac_dt_ids); | |
50 | ||
6a228452 | 51 | #ifdef CONFIG_OF |
979857bb | 52 | static int stmmac_probe_config_dt(struct platform_device *pdev, |
1dd06ae8 GKH |
53 | struct plat_stmmacenet_data *plat, |
54 | const char **mac) | |
6a228452 SR |
55 | { |
56 | struct device_node *np = pdev->dev.of_node; | |
25c83b5c | 57 | struct stmmac_dma_cfg *dma_cfg; |
022066f5 | 58 | const struct of_device_id *device; |
6a228452 SR |
59 | |
60 | if (!np) | |
61 | return -ENODEV; | |
62 | ||
022066f5 CYT |
63 | device = of_match_device(stmmac_dt_ids, &pdev->dev); |
64 | if (!device) | |
65 | return -ENODEV; | |
66 | ||
67 | if (device->data) { | |
68 | const struct stmmac_of_data *data = device->data; | |
69 | plat->has_gmac = data->has_gmac; | |
70 | plat->enh_desc = data->enh_desc; | |
71 | plat->tx_coe = data->tx_coe; | |
72 | plat->rx_coe = data->rx_coe; | |
73 | plat->bugged_jumbo = data->bugged_jumbo; | |
74 | plat->pmt = data->pmt; | |
75 | plat->riwt_off = data->riwt_off; | |
76 | plat->fix_mac_speed = data->fix_mac_speed; | |
77 | plat->bus_setup = data->bus_setup; | |
78 | plat->setup = data->setup; | |
79 | plat->free = data->free; | |
80 | plat->init = data->init; | |
81 | plat->exit = data->exit; | |
82 | } | |
83 | ||
6a228452 SR |
84 | *mac = of_get_mac_address(np); |
85 | plat->interface = of_get_phy_mode(np); | |
25c83b5c | 86 | |
9cbadf09 SK |
87 | /* Get max speed of operation from device tree */ |
88 | if (of_property_read_u32(np, "max-speed", &plat->max_speed)) | |
89 | plat->max_speed = -1; | |
90 | ||
25c83b5c SK |
91 | plat->bus_id = of_alias_get_id(np, "ethernet"); |
92 | if (plat->bus_id < 0) | |
93 | plat->bus_id = 0; | |
94 | ||
436f7ecd CYT |
95 | /* Default to phy auto-detection */ |
96 | plat->phy_addr = -1; | |
97 | ||
98 | /* "snps,phy-addr" is not a standard property. Mark it as deprecated | |
99 | * and warn of its use. Remove this when phy node support is added. | |
100 | */ | |
101 | if (of_property_read_u32(np, "snps,phy-addr", &plat->phy_addr) == 0) | |
102 | dev_warn(&pdev->dev, "snps,phy-addr property is deprecated\n"); | |
25c83b5c | 103 | |
6a228452 SR |
104 | plat->mdio_bus_data = devm_kzalloc(&pdev->dev, |
105 | sizeof(struct stmmac_mdio_bus_data), | |
106 | GFP_KERNEL); | |
107 | ||
6aedb8c0 CYT |
108 | plat->force_sf_dma_mode = of_property_read_bool(np, "snps,force_sf_dma_mode"); |
109 | ||
2618abb7 VB |
110 | /* Set the maxmtu to a default of JUMBO_LEN in case the |
111 | * parameter is not present in the device tree. | |
112 | */ | |
113 | plat->maxmtu = JUMBO_LEN; | |
114 | ||
6a228452 SR |
115 | /* |
116 | * Currently only the properties needed on SPEAr600 | |
117 | * are provided. All other properties should be added | |
118 | * once needed on other platforms. | |
119 | */ | |
84c9f8c4 DN |
120 | if (of_device_is_compatible(np, "st,spear600-gmac") || |
121 | of_device_is_compatible(np, "snps,dwmac-3.70a") || | |
122 | of_device_is_compatible(np, "snps,dwmac")) { | |
2618abb7 VB |
123 | /* Note that the max-frame-size parameter as defined in the |
124 | * ePAPR v1.1 spec is defined as max-frame-size, it's | |
125 | * actually used as the IEEE definition of MAC Client | |
126 | * data, or MTU. The ePAPR specification is confusing as | |
127 | * the definition is max-frame-size, but usage examples | |
128 | * are clearly MTUs | |
129 | */ | |
130 | of_property_read_u32(np, "max-frame-size", &plat->maxmtu); | |
6a228452 SR |
131 | plat->has_gmac = 1; |
132 | plat->pmt = 1; | |
133 | } | |
134 | ||
25c83b5c SK |
135 | if (of_device_is_compatible(np, "snps,dwmac-3.610") || |
136 | of_device_is_compatible(np, "snps,dwmac-3.710")) { | |
137 | plat->enh_desc = 1; | |
138 | plat->bugged_jumbo = 1; | |
139 | plat->force_sf_dma_mode = 1; | |
140 | } | |
141 | ||
64c3b252 BA |
142 | if (of_find_property(np, "snps,pbl", NULL)) { |
143 | dma_cfg = devm_kzalloc(&pdev->dev, sizeof(*dma_cfg), | |
144 | GFP_KERNEL); | |
145 | if (!dma_cfg) | |
146 | return -ENOMEM; | |
147 | plat->dma_cfg = dma_cfg; | |
148 | of_property_read_u32(np, "snps,pbl", &dma_cfg->pbl); | |
149 | dma_cfg->fixed_burst = | |
150 | of_property_read_bool(np, "snps,fixed-burst"); | |
151 | dma_cfg->mixed_burst = | |
152 | of_property_read_bool(np, "snps,mixed-burst"); | |
153 | } | |
e2a240c7 SZ |
154 | plat->force_thresh_dma_mode = of_property_read_bool(np, "snps,force_thresh_dma_mode"); |
155 | if (plat->force_thresh_dma_mode) { | |
156 | plat->force_sf_dma_mode = 0; | |
157 | pr_warn("force_sf_dma_mode is ignored if force_thresh_dma_mode is set."); | |
356f9e74 | 158 | } |
25c83b5c | 159 | |
6a228452 SR |
160 | return 0; |
161 | } | |
162 | #else | |
979857bb | 163 | static int stmmac_probe_config_dt(struct platform_device *pdev, |
1dd06ae8 GKH |
164 | struct plat_stmmacenet_data *plat, |
165 | const char **mac) | |
6a228452 SR |
166 | { |
167 | return -ENOSYS; | |
168 | } | |
169 | #endif /* CONFIG_OF */ | |
170 | ||
bfab27a1 GC |
171 | /** |
172 | * stmmac_pltfr_probe | |
173 | * @pdev: platform device pointer | |
174 | * Description: platform_device probe function. It allocates | |
175 | * the necessary resources and invokes the main to init | |
176 | * the net device, register the mdio bus etc. | |
177 | */ | |
979857bb | 178 | static int stmmac_pltfr_probe(struct platform_device *pdev) |
bfab27a1 GC |
179 | { |
180 | int ret = 0; | |
181 | struct resource *res; | |
3f8bdecd | 182 | struct device *dev = &pdev->dev; |
bfab27a1 GC |
183 | void __iomem *addr = NULL; |
184 | struct stmmac_priv *priv = NULL; | |
6a228452 SR |
185 | struct plat_stmmacenet_data *plat_dat = NULL; |
186 | const char *mac = NULL; | |
bfab27a1 GC |
187 | |
188 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
5760f427 SMP |
189 | addr = devm_ioremap_resource(dev, res); |
190 | if (IS_ERR(addr)) | |
191 | return PTR_ERR(addr); | |
6a228452 | 192 | |
f91b29f5 | 193 | plat_dat = dev_get_platdata(&pdev->dev); |
6a228452 | 194 | if (pdev->dev.of_node) { |
d741434c SK |
195 | if (!plat_dat) |
196 | plat_dat = devm_kzalloc(&pdev->dev, | |
6a228452 SR |
197 | sizeof(struct plat_stmmacenet_data), |
198 | GFP_KERNEL); | |
199 | if (!plat_dat) { | |
200 | pr_err("%s: ERROR: no memory", __func__); | |
3f8bdecd | 201 | return -ENOMEM; |
6a228452 SR |
202 | } |
203 | ||
204 | ret = stmmac_probe_config_dt(pdev, plat_dat, &mac); | |
205 | if (ret) { | |
206 | pr_err("%s: main dt probe failed", __func__); | |
3f8bdecd | 207 | return ret; |
6a228452 | 208 | } |
6a228452 | 209 | } |
cf3f047b | 210 | |
938dfdaa CYT |
211 | /* Custom setup (if needed) */ |
212 | if (plat_dat->setup) { | |
213 | plat_dat->bsp_priv = plat_dat->setup(pdev); | |
214 | if (IS_ERR(plat_dat->bsp_priv)) | |
215 | return PTR_ERR(plat_dat->bsp_priv); | |
216 | } | |
217 | ||
cf3f047b GC |
218 | /* Custom initialisation (if needed)*/ |
219 | if (plat_dat->init) { | |
938dfdaa | 220 | ret = plat_dat->init(pdev, plat_dat->bsp_priv); |
cf3f047b | 221 | if (unlikely(ret)) |
3f8bdecd | 222 | return ret; |
cf3f047b GC |
223 | } |
224 | ||
225 | priv = stmmac_dvr_probe(&(pdev->dev), plat_dat, addr); | |
c5e4ddbd | 226 | if (IS_ERR(priv)) { |
cf3f047b | 227 | pr_err("%s: main driver probe failed", __func__); |
c5e4ddbd | 228 | return PTR_ERR(priv); |
bfab27a1 GC |
229 | } |
230 | ||
6a228452 SR |
231 | /* Get MAC address if available (DT) */ |
232 | if (mac) | |
233 | memcpy(priv->dev->dev_addr, mac, ETH_ALEN); | |
234 | ||
bfab27a1 GC |
235 | /* Get the MAC information */ |
236 | priv->dev->irq = platform_get_irq_byname(pdev, "macirq"); | |
237 | if (priv->dev->irq == -ENXIO) { | |
238 | pr_err("%s: ERROR: MAC IRQ configuration " | |
239 | "information not found\n", __func__); | |
3f8bdecd | 240 | return -ENXIO; |
bfab27a1 GC |
241 | } |
242 | ||
243 | /* | |
244 | * On some platforms e.g. SPEAr the wake up irq differs from the mac irq | |
245 | * The external wake up irq can be passed through the platform code | |
246 | * named as "eth_wake_irq" | |
247 | * | |
248 | * In case the wake up interrupt is not passed from the platform | |
249 | * so the driver will continue to use the mac irq (ndev->irq) | |
250 | */ | |
251 | priv->wol_irq = platform_get_irq_byname(pdev, "eth_wake_irq"); | |
252 | if (priv->wol_irq == -ENXIO) | |
253 | priv->wol_irq = priv->dev->irq; | |
254 | ||
d765955d GC |
255 | priv->lpi_irq = platform_get_irq_byname(pdev, "eth_lpi"); |
256 | ||
bfab27a1 GC |
257 | platform_set_drvdata(pdev, priv->dev); |
258 | ||
bfab27a1 GC |
259 | pr_debug("STMMAC platform driver registration completed"); |
260 | ||
261 | return 0; | |
bfab27a1 GC |
262 | } |
263 | ||
264 | /** | |
265 | * stmmac_pltfr_remove | |
266 | * @pdev: platform device pointer | |
267 | * Description: this function calls the main to free the net resources | |
268 | * and calls the platforms hook and release the resources (e.g. mem). | |
269 | */ | |
270 | static int stmmac_pltfr_remove(struct platform_device *pdev) | |
271 | { | |
272 | struct net_device *ndev = platform_get_drvdata(pdev); | |
273 | struct stmmac_priv *priv = netdev_priv(ndev); | |
bfab27a1 GC |
274 | int ret = stmmac_dvr_remove(ndev); |
275 | ||
bfab27a1 | 276 | if (priv->plat->exit) |
938dfdaa CYT |
277 | priv->plat->exit(pdev, priv->plat->bsp_priv); |
278 | ||
279 | if (priv->plat->free) | |
280 | priv->plat->free(pdev, priv->plat->bsp_priv); | |
bfab27a1 | 281 | |
bfab27a1 GC |
282 | return ret; |
283 | } | |
284 | ||
285 | #ifdef CONFIG_PM | |
286 | static int stmmac_pltfr_suspend(struct device *dev) | |
bfab27a1 | 287 | { |
3256251f | 288 | int ret; |
bfab27a1 | 289 | struct net_device *ndev = dev_get_drvdata(dev); |
33a23e22 | 290 | struct stmmac_priv *priv = netdev_priv(ndev); |
3256251f | 291 | struct platform_device *pdev = to_platform_device(dev); |
bfab27a1 | 292 | |
33a23e22 SK |
293 | ret = stmmac_suspend(ndev); |
294 | if (priv->plat->exit) | |
938dfdaa | 295 | priv->plat->exit(pdev, priv->plat->bsp_priv); |
3256251f FV |
296 | |
297 | return ret; | |
bfab27a1 GC |
298 | } |
299 | ||
33a23e22 | 300 | static int stmmac_pltfr_resume(struct device *dev) |
bfab27a1 GC |
301 | { |
302 | struct net_device *ndev = dev_get_drvdata(dev); | |
33a23e22 | 303 | struct stmmac_priv *priv = netdev_priv(ndev); |
3256251f FV |
304 | struct platform_device *pdev = to_platform_device(dev); |
305 | ||
33a23e22 | 306 | if (priv->plat->init) |
938dfdaa | 307 | priv->plat->init(pdev, priv->plat->bsp_priv); |
bfab27a1 | 308 | |
33a23e22 | 309 | return stmmac_resume(ndev); |
bfab27a1 GC |
310 | } |
311 | ||
bfab27a1 GC |
312 | #endif /* CONFIG_PM */ |
313 | ||
33a23e22 SK |
314 | static SIMPLE_DEV_PM_OPS(stmmac_pltfr_pm_ops, |
315 | stmmac_pltfr_suspend, stmmac_pltfr_resume); | |
316 | ||
ba27ec66 | 317 | struct platform_driver stmmac_pltfr_driver = { |
bfab27a1 GC |
318 | .probe = stmmac_pltfr_probe, |
319 | .remove = stmmac_pltfr_remove, | |
320 | .driver = { | |
321 | .name = STMMAC_RESOURCE_NAME, | |
322 | .owner = THIS_MODULE, | |
323 | .pm = &stmmac_pltfr_pm_ops, | |
6a228452 | 324 | .of_match_table = of_match_ptr(stmmac_dt_ids), |
bfab27a1 GC |
325 | }, |
326 | }; | |
327 | ||
bfab27a1 GC |
328 | MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet PLATFORM driver"); |
329 | MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>"); | |
330 | MODULE_LICENSE("GPL"); |