Richard Zhao | 1530280 | 2012-07-07 22:56:48 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2012 Freescale Semiconductor, Inc. |
| 3 | * Copyright (C) 2012 Marek Vasut <marex@denx.de> |
| 4 | * on behalf of DENX Software Engineering GmbH |
| 5 | * |
| 6 | * The code contained herein is licensed under the GNU General Public |
| 7 | * License. You may obtain a copy of the GNU General Public License |
| 8 | * Version 2 or later at the following locations: |
| 9 | * |
| 10 | * http://www.opensource.org/licenses/gpl-license.html |
| 11 | * http://www.gnu.org/copyleft/gpl.html |
| 12 | */ |
| 13 | |
| 14 | #include <linux/module.h> |
| 15 | #include <linux/of_platform.h> |
| 16 | #include <linux/of_gpio.h> |
| 17 | #include <linux/platform_device.h> |
| 18 | #include <linux/pm_runtime.h> |
| 19 | #include <linux/dma-mapping.h> |
| 20 | #include <linux/usb/chipidea.h> |
| 21 | #include <linux/clk.h> |
Richard Zhao | 1530280 | 2012-07-07 22:56:48 +0800 | [diff] [blame] | 22 | |
| 23 | #include "ci.h" |
Alexander Shishkin | 8e22978 | 2013-06-24 14:46:36 +0300 | [diff] [blame] | 24 | #include "ci_hdrc_imx.h" |
Richard Zhao | 1530280 | 2012-07-07 22:56:48 +0800 | [diff] [blame] | 25 | |
Peter Chen | 1071055 | 2014-01-10 13:51:28 +0800 | [diff] [blame] | 26 | struct ci_hdrc_imx_platform_flag { |
| 27 | unsigned int flags; |
Peter Chen | e14db48 | 2015-02-11 12:44:47 +0800 | [diff] [blame] | 28 | bool runtime_pm; |
Peter Chen | 1071055 | 2014-01-10 13:51:28 +0800 | [diff] [blame] | 29 | }; |
| 30 | |
Stefan Wahren | 8134572 | 2015-12-29 16:41:08 +0000 | [diff] [blame] | 31 | static const struct ci_hdrc_imx_platform_flag imx23_usb_data = { |
| 32 | .flags = CI_HDRC_TURN_VBUS_EARLY_ON | |
| 33 | CI_HDRC_DISABLE_STREAMING, |
| 34 | }; |
| 35 | |
Peter Chen | 1071055 | 2014-01-10 13:51:28 +0800 | [diff] [blame] | 36 | static const struct ci_hdrc_imx_platform_flag imx27_usb_data = { |
Peter Chen | 0ef877a | 2014-10-30 11:10:04 +0800 | [diff] [blame] | 37 | CI_HDRC_DISABLE_STREAMING, |
Peter Chen | 1071055 | 2014-01-10 13:51:28 +0800 | [diff] [blame] | 38 | }; |
| 39 | |
| 40 | static const struct ci_hdrc_imx_platform_flag imx28_usb_data = { |
Li Jun | 6adb9b7b | 2015-02-11 12:45:01 +0800 | [diff] [blame] | 41 | .flags = CI_HDRC_IMX28_WRITE_FIX | |
Peter Chen | 0ef877a | 2014-10-30 11:10:04 +0800 | [diff] [blame] | 42 | CI_HDRC_TURN_VBUS_EARLY_ON | |
| 43 | CI_HDRC_DISABLE_STREAMING, |
Peter Chen | 1071055 | 2014-01-10 13:51:28 +0800 | [diff] [blame] | 44 | }; |
| 45 | |
Peter Chen | e14db48 | 2015-02-11 12:44:47 +0800 | [diff] [blame] | 46 | static const struct ci_hdrc_imx_platform_flag imx6q_usb_data = { |
Li Jun | 6adb9b7b | 2015-02-11 12:45:01 +0800 | [diff] [blame] | 47 | .flags = CI_HDRC_SUPPORTS_RUNTIME_PM | |
Peter Chen | 0ef877a | 2014-10-30 11:10:04 +0800 | [diff] [blame] | 48 | CI_HDRC_TURN_VBUS_EARLY_ON | |
| 49 | CI_HDRC_DISABLE_STREAMING, |
Peter Chen | e14db48 | 2015-02-11 12:44:47 +0800 | [diff] [blame] | 50 | }; |
| 51 | |
| 52 | static const struct ci_hdrc_imx_platform_flag imx6sl_usb_data = { |
Li Jun | 6adb9b7b | 2015-02-11 12:45:01 +0800 | [diff] [blame] | 53 | .flags = CI_HDRC_SUPPORTS_RUNTIME_PM | |
Peter Chen | 0ef877a | 2014-10-30 11:10:04 +0800 | [diff] [blame] | 54 | CI_HDRC_TURN_VBUS_EARLY_ON | |
| 55 | CI_HDRC_DISABLE_HOST_STREAMING, |
Peter Chen | e14db48 | 2015-02-11 12:44:47 +0800 | [diff] [blame] | 56 | }; |
| 57 | |
| 58 | static const struct ci_hdrc_imx_platform_flag imx6sx_usb_data = { |
Li Jun | 6adb9b7b | 2015-02-11 12:45:01 +0800 | [diff] [blame] | 59 | .flags = CI_HDRC_SUPPORTS_RUNTIME_PM | |
Peter Chen | 0ef877a | 2014-10-30 11:10:04 +0800 | [diff] [blame] | 60 | CI_HDRC_TURN_VBUS_EARLY_ON | |
| 61 | CI_HDRC_DISABLE_HOST_STREAMING, |
Peter Chen | e14db48 | 2015-02-11 12:44:47 +0800 | [diff] [blame] | 62 | }; |
| 63 | |
Peter Chen | 52fe568 | 2015-09-16 15:52:32 +0800 | [diff] [blame] | 64 | static const struct ci_hdrc_imx_platform_flag imx6ul_usb_data = { |
| 65 | .flags = CI_HDRC_SUPPORTS_RUNTIME_PM | |
| 66 | CI_HDRC_TURN_VBUS_EARLY_ON, |
| 67 | }; |
| 68 | |
Peter Chen | 5cb377c | 2015-09-09 16:33:02 +0800 | [diff] [blame] | 69 | static const struct ci_hdrc_imx_platform_flag imx7d_usb_data = { |
| 70 | .flags = CI_HDRC_SUPPORTS_RUNTIME_PM, |
| 71 | }; |
| 72 | |
Peter Chen | 1071055 | 2014-01-10 13:51:28 +0800 | [diff] [blame] | 73 | static const struct of_device_id ci_hdrc_imx_dt_ids[] = { |
Stefan Wahren | 8134572 | 2015-12-29 16:41:08 +0000 | [diff] [blame] | 74 | { .compatible = "fsl,imx23-usb", .data = &imx23_usb_data}, |
Peter Chen | 1071055 | 2014-01-10 13:51:28 +0800 | [diff] [blame] | 75 | { .compatible = "fsl,imx28-usb", .data = &imx28_usb_data}, |
| 76 | { .compatible = "fsl,imx27-usb", .data = &imx27_usb_data}, |
Peter Chen | e14db48 | 2015-02-11 12:44:47 +0800 | [diff] [blame] | 77 | { .compatible = "fsl,imx6q-usb", .data = &imx6q_usb_data}, |
| 78 | { .compatible = "fsl,imx6sl-usb", .data = &imx6sl_usb_data}, |
Li Jun | 8315b77 | 2015-09-16 14:46:32 +0800 | [diff] [blame] | 79 | { .compatible = "fsl,imx6sx-usb", .data = &imx6sx_usb_data}, |
Peter Chen | 52fe568 | 2015-09-16 15:52:32 +0800 | [diff] [blame] | 80 | { .compatible = "fsl,imx6ul-usb", .data = &imx6ul_usb_data}, |
Peter Chen | 5cb377c | 2015-09-09 16:33:02 +0800 | [diff] [blame] | 81 | { .compatible = "fsl,imx7d-usb", .data = &imx7d_usb_data}, |
Peter Chen | 1071055 | 2014-01-10 13:51:28 +0800 | [diff] [blame] | 82 | { /* sentinel */ } |
| 83 | }; |
| 84 | MODULE_DEVICE_TABLE(of, ci_hdrc_imx_dt_ids); |
| 85 | |
Alexander Shishkin | 8e22978 | 2013-06-24 14:46:36 +0300 | [diff] [blame] | 86 | struct ci_hdrc_imx_data { |
Richard Zhao | 1530280 | 2012-07-07 22:56:48 +0800 | [diff] [blame] | 87 | struct usb_phy *phy; |
| 88 | struct platform_device *ci_pdev; |
| 89 | struct clk *clk; |
Sascha Hauer | 05986ba | 2013-08-14 12:44:16 +0300 | [diff] [blame] | 90 | struct imx_usbmisc_data *usbmisc_data; |
Peter Chen | e14db48 | 2015-02-11 12:44:47 +0800 | [diff] [blame] | 91 | bool supports_runtime_pm; |
| 92 | bool in_lpm; |
Peter Chen | ae3e57a | 2015-09-16 09:40:51 +0800 | [diff] [blame] | 93 | /* SoC before i.mx6 (except imx23/imx28) needs three clks */ |
| 94 | bool need_three_clks; |
| 95 | struct clk *clk_ipg; |
| 96 | struct clk *clk_ahb; |
| 97 | struct clk *clk_per; |
| 98 | /* --------------------------------- */ |
Richard Zhao | 1530280 | 2012-07-07 22:56:48 +0800 | [diff] [blame] | 99 | }; |
| 100 | |
Richard Zhao | d142d6b | 2012-09-12 14:58:05 +0300 | [diff] [blame] | 101 | /* Common functions shared by usbmisc drivers */ |
| 102 | |
Sascha Hauer | 05986ba | 2013-08-14 12:44:16 +0300 | [diff] [blame] | 103 | static struct imx_usbmisc_data *usbmisc_get_init_data(struct device *dev) |
Richard Zhao | d142d6b | 2012-09-12 14:58:05 +0300 | [diff] [blame] | 104 | { |
Stefan Agner | f40017e | 2014-09-22 08:14:15 +0800 | [diff] [blame] | 105 | struct platform_device *misc_pdev; |
Richard Zhao | d142d6b | 2012-09-12 14:58:05 +0300 | [diff] [blame] | 106 | struct device_node *np = dev->of_node; |
| 107 | struct of_phandle_args args; |
Sascha Hauer | 05986ba | 2013-08-14 12:44:16 +0300 | [diff] [blame] | 108 | struct imx_usbmisc_data *data; |
Richard Zhao | d142d6b | 2012-09-12 14:58:05 +0300 | [diff] [blame] | 109 | int ret; |
| 110 | |
Sascha Hauer | 05986ba | 2013-08-14 12:44:16 +0300 | [diff] [blame] | 111 | /* |
| 112 | * In case the fsl,usbmisc property is not present this device doesn't |
| 113 | * need usbmisc. Return NULL (which is no error here) |
| 114 | */ |
| 115 | if (!of_get_property(np, "fsl,usbmisc", NULL)) |
| 116 | return NULL; |
| 117 | |
| 118 | data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); |
| 119 | if (!data) |
| 120 | return ERR_PTR(-ENOMEM); |
Richard Zhao | d142d6b | 2012-09-12 14:58:05 +0300 | [diff] [blame] | 121 | |
| 122 | ret = of_parse_phandle_with_args(np, "fsl,usbmisc", "#index-cells", |
| 123 | 0, &args); |
| 124 | if (ret) { |
| 125 | dev_err(dev, "Failed to parse property fsl,usbmisc, errno %d\n", |
| 126 | ret); |
Sascha Hauer | 05986ba | 2013-08-14 12:44:16 +0300 | [diff] [blame] | 127 | return ERR_PTR(ret); |
Richard Zhao | d142d6b | 2012-09-12 14:58:05 +0300 | [diff] [blame] | 128 | } |
Sascha Hauer | 05986ba | 2013-08-14 12:44:16 +0300 | [diff] [blame] | 129 | |
| 130 | data->index = args.args[0]; |
Stefan Agner | f40017e | 2014-09-22 08:14:15 +0800 | [diff] [blame] | 131 | |
| 132 | misc_pdev = of_find_device_by_node(args.np); |
Richard Zhao | d142d6b | 2012-09-12 14:58:05 +0300 | [diff] [blame] | 133 | of_node_put(args.np); |
| 134 | |
Tomeu Vizoso | ef12da9 | 2015-08-06 15:09:54 +0200 | [diff] [blame] | 135 | if (!misc_pdev || !platform_get_drvdata(misc_pdev)) |
Stefan Agner | f40017e | 2014-09-22 08:14:15 +0800 | [diff] [blame] | 136 | return ERR_PTR(-EPROBE_DEFER); |
| 137 | |
| 138 | data->dev = &misc_pdev->dev; |
| 139 | |
Richard Zhao | d142d6b | 2012-09-12 14:58:05 +0300 | [diff] [blame] | 140 | if (of_find_property(np, "disable-over-current", NULL)) |
Sascha Hauer | 05986ba | 2013-08-14 12:44:16 +0300 | [diff] [blame] | 141 | data->disable_oc = 1; |
Richard Zhao | d142d6b | 2012-09-12 14:58:05 +0300 | [diff] [blame] | 142 | |
Li Jun | 9dba516 | 2016-07-20 16:02:42 +0800 | [diff] [blame] | 143 | if (of_find_property(np, "over-current-active-high", NULL)) |
| 144 | data->oc_polarity = 1; |
| 145 | |
Michael Grzeschik | a068533 | 2013-03-30 12:54:01 +0200 | [diff] [blame] | 146 | if (of_find_property(np, "external-vbus-divider", NULL)) |
Sascha Hauer | 05986ba | 2013-08-14 12:44:16 +0300 | [diff] [blame] | 147 | data->evdo = 1; |
Michael Grzeschik | a068533 | 2013-03-30 12:54:01 +0200 | [diff] [blame] | 148 | |
Sascha Hauer | 05986ba | 2013-08-14 12:44:16 +0300 | [diff] [blame] | 149 | return data; |
Richard Zhao | d142d6b | 2012-09-12 14:58:05 +0300 | [diff] [blame] | 150 | } |
Richard Zhao | d142d6b | 2012-09-12 14:58:05 +0300 | [diff] [blame] | 151 | |
| 152 | /* End of common functions shared by usbmisc drivers*/ |
Peter Chen | ae3e57a | 2015-09-16 09:40:51 +0800 | [diff] [blame] | 153 | static int imx_get_clks(struct device *dev) |
| 154 | { |
| 155 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); |
| 156 | int ret = 0; |
| 157 | |
| 158 | data->clk_ipg = devm_clk_get(dev, "ipg"); |
| 159 | if (IS_ERR(data->clk_ipg)) { |
| 160 | /* If the platform only needs one clocks */ |
| 161 | data->clk = devm_clk_get(dev, NULL); |
| 162 | if (IS_ERR(data->clk)) { |
| 163 | ret = PTR_ERR(data->clk); |
| 164 | dev_err(dev, |
| 165 | "Failed to get clks, err=%ld,%ld\n", |
| 166 | PTR_ERR(data->clk), PTR_ERR(data->clk_ipg)); |
| 167 | return ret; |
| 168 | } |
| 169 | return ret; |
| 170 | } |
| 171 | |
| 172 | data->clk_ahb = devm_clk_get(dev, "ahb"); |
| 173 | if (IS_ERR(data->clk_ahb)) { |
| 174 | ret = PTR_ERR(data->clk_ahb); |
| 175 | dev_err(dev, |
| 176 | "Failed to get ahb clock, err=%d\n", ret); |
| 177 | return ret; |
| 178 | } |
| 179 | |
| 180 | data->clk_per = devm_clk_get(dev, "per"); |
| 181 | if (IS_ERR(data->clk_per)) { |
| 182 | ret = PTR_ERR(data->clk_per); |
| 183 | dev_err(dev, |
| 184 | "Failed to get per clock, err=%d\n", ret); |
| 185 | return ret; |
| 186 | } |
| 187 | |
| 188 | data->need_three_clks = true; |
| 189 | return ret; |
| 190 | } |
| 191 | |
| 192 | static int imx_prepare_enable_clks(struct device *dev) |
| 193 | { |
| 194 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); |
| 195 | int ret = 0; |
| 196 | |
| 197 | if (data->need_three_clks) { |
| 198 | ret = clk_prepare_enable(data->clk_ipg); |
| 199 | if (ret) { |
| 200 | dev_err(dev, |
| 201 | "Failed to prepare/enable ipg clk, err=%d\n", |
| 202 | ret); |
| 203 | return ret; |
| 204 | } |
| 205 | |
| 206 | ret = clk_prepare_enable(data->clk_ahb); |
| 207 | if (ret) { |
| 208 | dev_err(dev, |
| 209 | "Failed to prepare/enable ahb clk, err=%d\n", |
| 210 | ret); |
| 211 | clk_disable_unprepare(data->clk_ipg); |
| 212 | return ret; |
| 213 | } |
| 214 | |
| 215 | ret = clk_prepare_enable(data->clk_per); |
| 216 | if (ret) { |
| 217 | dev_err(dev, |
| 218 | "Failed to prepare/enable per clk, err=%d\n", |
| 219 | ret); |
| 220 | clk_disable_unprepare(data->clk_ahb); |
| 221 | clk_disable_unprepare(data->clk_ipg); |
| 222 | return ret; |
| 223 | } |
| 224 | } else { |
| 225 | ret = clk_prepare_enable(data->clk); |
| 226 | if (ret) { |
| 227 | dev_err(dev, |
| 228 | "Failed to prepare/enable clk, err=%d\n", |
| 229 | ret); |
| 230 | return ret; |
| 231 | } |
| 232 | } |
| 233 | |
| 234 | return ret; |
| 235 | } |
| 236 | |
| 237 | static void imx_disable_unprepare_clks(struct device *dev) |
| 238 | { |
| 239 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); |
| 240 | |
| 241 | if (data->need_three_clks) { |
| 242 | clk_disable_unprepare(data->clk_per); |
| 243 | clk_disable_unprepare(data->clk_ahb); |
| 244 | clk_disable_unprepare(data->clk_ipg); |
| 245 | } else { |
| 246 | clk_disable_unprepare(data->clk); |
| 247 | } |
| 248 | } |
Richard Zhao | d142d6b | 2012-09-12 14:58:05 +0300 | [diff] [blame] | 249 | |
Alexander Shishkin | 8e22978 | 2013-06-24 14:46:36 +0300 | [diff] [blame] | 250 | static int ci_hdrc_imx_probe(struct platform_device *pdev) |
Richard Zhao | 1530280 | 2012-07-07 22:56:48 +0800 | [diff] [blame] | 251 | { |
Alexander Shishkin | 8e22978 | 2013-06-24 14:46:36 +0300 | [diff] [blame] | 252 | struct ci_hdrc_imx_data *data; |
| 253 | struct ci_hdrc_platform_data pdata = { |
Alexander Shiyan | c844d6c | 2014-03-11 13:47:38 +0800 | [diff] [blame] | 254 | .name = dev_name(&pdev->dev), |
Michael Grzeschik | f6a3b3a | 2013-06-13 17:59:58 +0300 | [diff] [blame] | 255 | .capoffset = DEF_CAPOFFSET, |
Michael Grzeschik | f6a3b3a | 2013-06-13 17:59:58 +0300 | [diff] [blame] | 256 | }; |
Richard Zhao | 1530280 | 2012-07-07 22:56:48 +0800 | [diff] [blame] | 257 | int ret; |
LABBE Corentin | 6f51bc3 | 2015-11-12 08:43:34 +0100 | [diff] [blame] | 258 | const struct of_device_id *of_id; |
| 259 | const struct ci_hdrc_imx_platform_flag *imx_platform_flag; |
| 260 | |
| 261 | of_id = of_match_device(ci_hdrc_imx_dt_ids, &pdev->dev); |
| 262 | if (!of_id) |
| 263 | return -ENODEV; |
| 264 | |
| 265 | imx_platform_flag = of_id->data; |
Richard Zhao | 1530280 | 2012-07-07 22:56:48 +0800 | [diff] [blame] | 266 | |
| 267 | data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); |
Fabio Estevam | 7352982 | 2014-11-26 13:44:24 +0800 | [diff] [blame] | 268 | if (!data) |
Richard Zhao | 1530280 | 2012-07-07 22:56:48 +0800 | [diff] [blame] | 269 | return -ENOMEM; |
Richard Zhao | 1530280 | 2012-07-07 22:56:48 +0800 | [diff] [blame] | 270 | |
Peter Chen | ae3e57a | 2015-09-16 09:40:51 +0800 | [diff] [blame] | 271 | platform_set_drvdata(pdev, data); |
Sascha Hauer | 05986ba | 2013-08-14 12:44:16 +0300 | [diff] [blame] | 272 | data->usbmisc_data = usbmisc_get_init_data(&pdev->dev); |
| 273 | if (IS_ERR(data->usbmisc_data)) |
| 274 | return PTR_ERR(data->usbmisc_data); |
| 275 | |
Peter Chen | ae3e57a | 2015-09-16 09:40:51 +0800 | [diff] [blame] | 276 | ret = imx_get_clks(&pdev->dev); |
| 277 | if (ret) |
Richard Zhao | 1530280 | 2012-07-07 22:56:48 +0800 | [diff] [blame] | 278 | return ret; |
Peter Chen | ae3e57a | 2015-09-16 09:40:51 +0800 | [diff] [blame] | 279 | |
| 280 | ret = imx_prepare_enable_clks(&pdev->dev); |
| 281 | if (ret) |
| 282 | return ret; |
Richard Zhao | 1530280 | 2012-07-07 22:56:48 +0800 | [diff] [blame] | 283 | |
Fabio Estevam | 046916d | 2013-06-25 12:58:05 +0300 | [diff] [blame] | 284 | data->phy = devm_usb_get_phy_by_phandle(&pdev->dev, "fsl,usbphy", 0); |
Peter Chen | af59a8b | 2013-09-24 12:47:54 +0800 | [diff] [blame] | 285 | if (IS_ERR(data->phy)) { |
| 286 | ret = PTR_ERR(data->phy); |
Markus Pargmann | 16853d7 | 2014-07-22 10:09:43 +0800 | [diff] [blame] | 287 | /* Return -EINVAL if no usbphy is available */ |
| 288 | if (ret == -ENODEV) |
| 289 | ret = -EINVAL; |
Sascha Hauer | ea1418b | 2013-06-13 18:00:00 +0300 | [diff] [blame] | 290 | goto err_clk; |
Richard Zhao | 1530280 | 2012-07-07 22:56:48 +0800 | [diff] [blame] | 291 | } |
| 292 | |
Antoine Tenart | ef44cb4 | 2014-10-30 18:41:16 +0100 | [diff] [blame] | 293 | pdata.usb_phy = data->phy; |
Peter Chen | 5604008 | 2015-02-11 12:44:42 +0800 | [diff] [blame] | 294 | pdata.flags |= imx_platform_flag->flags; |
Peter Chen | e14db48 | 2015-02-11 12:44:47 +0800 | [diff] [blame] | 295 | if (pdata.flags & CI_HDRC_SUPPORTS_RUNTIME_PM) |
| 296 | data->supports_runtime_pm = true; |
Peter Chen | 1071055 | 2014-01-10 13:51:28 +0800 | [diff] [blame] | 297 | |
Peter Chen | a4cf1b1 | 2015-02-11 12:44:44 +0800 | [diff] [blame] | 298 | ret = imx_usbmisc_init(data->usbmisc_data); |
| 299 | if (ret) { |
| 300 | dev_err(&pdev->dev, "usbmisc init failed, ret=%d\n", ret); |
| 301 | goto err_clk; |
Richard Zhao | d142d6b | 2012-09-12 14:58:05 +0300 | [diff] [blame] | 302 | } |
| 303 | |
Alexander Shishkin | 8e22978 | 2013-06-24 14:46:36 +0300 | [diff] [blame] | 304 | data->ci_pdev = ci_hdrc_add_device(&pdev->dev, |
Richard Zhao | 1530280 | 2012-07-07 22:56:48 +0800 | [diff] [blame] | 305 | pdev->resource, pdev->num_resources, |
Michael Grzeschik | f6a3b3a | 2013-06-13 17:59:58 +0300 | [diff] [blame] | 306 | &pdata); |
Fabio Estevam | 770719d | 2013-06-13 17:59:48 +0300 | [diff] [blame] | 307 | if (IS_ERR(data->ci_pdev)) { |
| 308 | ret = PTR_ERR(data->ci_pdev); |
Stefan Agner | d3d8425 | 2016-01-27 16:55:45 -0800 | [diff] [blame] | 309 | if (ret != -EPROBE_DEFER) |
| 310 | dev_err(&pdev->dev, |
| 311 | "ci_hdrc_add_device failed, err=%d\n", ret); |
Peter Chen | af59a8b | 2013-09-24 12:47:54 +0800 | [diff] [blame] | 312 | goto err_clk; |
Richard Zhao | 1530280 | 2012-07-07 22:56:48 +0800 | [diff] [blame] | 313 | } |
| 314 | |
Peter Chen | a4cf1b1 | 2015-02-11 12:44:44 +0800 | [diff] [blame] | 315 | ret = imx_usbmisc_init_post(data->usbmisc_data); |
| 316 | if (ret) { |
| 317 | dev_err(&pdev->dev, "usbmisc post failed, ret=%d\n", ret); |
| 318 | goto disable_device; |
Michael Grzeschik | a068533 | 2013-03-30 12:54:01 +0200 | [diff] [blame] | 319 | } |
| 320 | |
Peter Chen | e14db48 | 2015-02-11 12:44:47 +0800 | [diff] [blame] | 321 | if (data->supports_runtime_pm) { |
| 322 | pm_runtime_set_active(&pdev->dev); |
| 323 | pm_runtime_enable(&pdev->dev); |
| 324 | } |
Richard Zhao | 1530280 | 2012-07-07 22:56:48 +0800 | [diff] [blame] | 325 | |
Peter Chen | 6d65311 | 2015-02-11 12:44:49 +0800 | [diff] [blame] | 326 | device_set_wakeup_capable(&pdev->dev, true); |
| 327 | |
Richard Zhao | 1530280 | 2012-07-07 22:56:48 +0800 | [diff] [blame] | 328 | return 0; |
| 329 | |
Fabio Estevam | 770719d | 2013-06-13 17:59:48 +0300 | [diff] [blame] | 330 | disable_device: |
Alexander Shishkin | 8e22978 | 2013-06-24 14:46:36 +0300 | [diff] [blame] | 331 | ci_hdrc_remove_device(data->ci_pdev); |
Sascha Hauer | ea1418b | 2013-06-13 18:00:00 +0300 | [diff] [blame] | 332 | err_clk: |
Peter Chen | ae3e57a | 2015-09-16 09:40:51 +0800 | [diff] [blame] | 333 | imx_disable_unprepare_clks(&pdev->dev); |
Richard Zhao | 1530280 | 2012-07-07 22:56:48 +0800 | [diff] [blame] | 334 | return ret; |
| 335 | } |
| 336 | |
Alexander Shishkin | 8e22978 | 2013-06-24 14:46:36 +0300 | [diff] [blame] | 337 | static int ci_hdrc_imx_remove(struct platform_device *pdev) |
Richard Zhao | 1530280 | 2012-07-07 22:56:48 +0800 | [diff] [blame] | 338 | { |
Alexander Shishkin | 8e22978 | 2013-06-24 14:46:36 +0300 | [diff] [blame] | 339 | struct ci_hdrc_imx_data *data = platform_get_drvdata(pdev); |
Richard Zhao | 1530280 | 2012-07-07 22:56:48 +0800 | [diff] [blame] | 340 | |
Peter Chen | e14db48 | 2015-02-11 12:44:47 +0800 | [diff] [blame] | 341 | if (data->supports_runtime_pm) { |
| 342 | pm_runtime_get_sync(&pdev->dev); |
| 343 | pm_runtime_disable(&pdev->dev); |
| 344 | pm_runtime_put_noidle(&pdev->dev); |
| 345 | } |
Alexander Shishkin | 8e22978 | 2013-06-24 14:46:36 +0300 | [diff] [blame] | 346 | ci_hdrc_remove_device(data->ci_pdev); |
Peter Chen | ae3e57a | 2015-09-16 09:40:51 +0800 | [diff] [blame] | 347 | imx_disable_unprepare_clks(&pdev->dev); |
Richard Zhao | 1530280 | 2012-07-07 22:56:48 +0800 | [diff] [blame] | 348 | |
Richard Zhao | 1530280 | 2012-07-07 22:56:48 +0800 | [diff] [blame] | 349 | return 0; |
| 350 | } |
| 351 | |
Andreas Fenkart | b09b522 | 2015-11-12 14:14:40 +0100 | [diff] [blame] | 352 | static void ci_hdrc_imx_shutdown(struct platform_device *pdev) |
| 353 | { |
| 354 | ci_hdrc_imx_remove(pdev); |
| 355 | } |
| 356 | |
Peter Chen | e14db48 | 2015-02-11 12:44:47 +0800 | [diff] [blame] | 357 | #ifdef CONFIG_PM |
Peter Chen | 2558c1f | 2014-11-26 13:44:30 +0800 | [diff] [blame] | 358 | static int imx_controller_suspend(struct device *dev) |
| 359 | { |
| 360 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); |
| 361 | |
| 362 | dev_dbg(dev, "at %s\n", __func__); |
| 363 | |
Peter Chen | ae3e57a | 2015-09-16 09:40:51 +0800 | [diff] [blame] | 364 | imx_disable_unprepare_clks(dev); |
Peter Chen | e14db48 | 2015-02-11 12:44:47 +0800 | [diff] [blame] | 365 | data->in_lpm = true; |
Peter Chen | 2558c1f | 2014-11-26 13:44:30 +0800 | [diff] [blame] | 366 | |
| 367 | return 0; |
| 368 | } |
| 369 | |
| 370 | static int imx_controller_resume(struct device *dev) |
| 371 | { |
| 372 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); |
Peter Chen | e14db48 | 2015-02-11 12:44:47 +0800 | [diff] [blame] | 373 | int ret = 0; |
Peter Chen | 2558c1f | 2014-11-26 13:44:30 +0800 | [diff] [blame] | 374 | |
| 375 | dev_dbg(dev, "at %s\n", __func__); |
| 376 | |
Peter Chen | e14db48 | 2015-02-11 12:44:47 +0800 | [diff] [blame] | 377 | if (!data->in_lpm) { |
| 378 | WARN_ON(1); |
| 379 | return 0; |
| 380 | } |
| 381 | |
Peter Chen | ae3e57a | 2015-09-16 09:40:51 +0800 | [diff] [blame] | 382 | ret = imx_prepare_enable_clks(dev); |
Peter Chen | e14db48 | 2015-02-11 12:44:47 +0800 | [diff] [blame] | 383 | if (ret) |
| 384 | return ret; |
| 385 | |
| 386 | data->in_lpm = false; |
| 387 | |
| 388 | ret = imx_usbmisc_set_wakeup(data->usbmisc_data, false); |
| 389 | if (ret) { |
| 390 | dev_err(dev, "usbmisc set_wakeup failed, ret=%d\n", ret); |
| 391 | goto clk_disable; |
| 392 | } |
| 393 | |
| 394 | return 0; |
| 395 | |
| 396 | clk_disable: |
Peter Chen | ae3e57a | 2015-09-16 09:40:51 +0800 | [diff] [blame] | 397 | imx_disable_unprepare_clks(dev); |
Peter Chen | e14db48 | 2015-02-11 12:44:47 +0800 | [diff] [blame] | 398 | return ret; |
Peter Chen | 2558c1f | 2014-11-26 13:44:30 +0800 | [diff] [blame] | 399 | } |
| 400 | |
Peter Chen | e14db48 | 2015-02-11 12:44:47 +0800 | [diff] [blame] | 401 | #ifdef CONFIG_PM_SLEEP |
Peter Chen | 2558c1f | 2014-11-26 13:44:30 +0800 | [diff] [blame] | 402 | static int ci_hdrc_imx_suspend(struct device *dev) |
| 403 | { |
Peter Chen | 6d65311 | 2015-02-11 12:44:49 +0800 | [diff] [blame] | 404 | int ret; |
| 405 | |
Peter Chen | e14db48 | 2015-02-11 12:44:47 +0800 | [diff] [blame] | 406 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); |
| 407 | |
| 408 | if (data->in_lpm) |
| 409 | /* The core's suspend doesn't run */ |
| 410 | return 0; |
| 411 | |
Peter Chen | 6d65311 | 2015-02-11 12:44:49 +0800 | [diff] [blame] | 412 | if (device_may_wakeup(dev)) { |
| 413 | ret = imx_usbmisc_set_wakeup(data->usbmisc_data, true); |
| 414 | if (ret) { |
| 415 | dev_err(dev, "usbmisc set_wakeup failed, ret=%d\n", |
| 416 | ret); |
| 417 | return ret; |
| 418 | } |
| 419 | } |
| 420 | |
Peter Chen | 2558c1f | 2014-11-26 13:44:30 +0800 | [diff] [blame] | 421 | return imx_controller_suspend(dev); |
| 422 | } |
| 423 | |
| 424 | static int ci_hdrc_imx_resume(struct device *dev) |
| 425 | { |
Peter Chen | e14db48 | 2015-02-11 12:44:47 +0800 | [diff] [blame] | 426 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); |
| 427 | int ret; |
| 428 | |
| 429 | ret = imx_controller_resume(dev); |
| 430 | if (!ret && data->supports_runtime_pm) { |
| 431 | pm_runtime_disable(dev); |
| 432 | pm_runtime_set_active(dev); |
| 433 | pm_runtime_enable(dev); |
| 434 | } |
| 435 | |
| 436 | return ret; |
Peter Chen | 2558c1f | 2014-11-26 13:44:30 +0800 | [diff] [blame] | 437 | } |
| 438 | #endif /* CONFIG_PM_SLEEP */ |
| 439 | |
Peter Chen | e14db48 | 2015-02-11 12:44:47 +0800 | [diff] [blame] | 440 | static int ci_hdrc_imx_runtime_suspend(struct device *dev) |
| 441 | { |
| 442 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); |
| 443 | int ret; |
| 444 | |
| 445 | if (data->in_lpm) { |
| 446 | WARN_ON(1); |
| 447 | return 0; |
| 448 | } |
| 449 | |
| 450 | ret = imx_usbmisc_set_wakeup(data->usbmisc_data, true); |
| 451 | if (ret) { |
| 452 | dev_err(dev, "usbmisc set_wakeup failed, ret=%d\n", ret); |
| 453 | return ret; |
| 454 | } |
| 455 | |
| 456 | return imx_controller_suspend(dev); |
| 457 | } |
| 458 | |
| 459 | static int ci_hdrc_imx_runtime_resume(struct device *dev) |
| 460 | { |
| 461 | return imx_controller_resume(dev); |
| 462 | } |
| 463 | |
| 464 | #endif /* CONFIG_PM */ |
| 465 | |
Peter Chen | 2558c1f | 2014-11-26 13:44:30 +0800 | [diff] [blame] | 466 | static const struct dev_pm_ops ci_hdrc_imx_pm_ops = { |
| 467 | SET_SYSTEM_SLEEP_PM_OPS(ci_hdrc_imx_suspend, ci_hdrc_imx_resume) |
Peter Chen | e14db48 | 2015-02-11 12:44:47 +0800 | [diff] [blame] | 468 | SET_RUNTIME_PM_OPS(ci_hdrc_imx_runtime_suspend, |
| 469 | ci_hdrc_imx_runtime_resume, NULL) |
Peter Chen | 2558c1f | 2014-11-26 13:44:30 +0800 | [diff] [blame] | 470 | }; |
Alexander Shishkin | 8e22978 | 2013-06-24 14:46:36 +0300 | [diff] [blame] | 471 | static struct platform_driver ci_hdrc_imx_driver = { |
| 472 | .probe = ci_hdrc_imx_probe, |
| 473 | .remove = ci_hdrc_imx_remove, |
Andreas Fenkart | b09b522 | 2015-11-12 14:14:40 +0100 | [diff] [blame] | 474 | .shutdown = ci_hdrc_imx_shutdown, |
Richard Zhao | 1530280 | 2012-07-07 22:56:48 +0800 | [diff] [blame] | 475 | .driver = { |
| 476 | .name = "imx_usb", |
Alexander Shishkin | 8e22978 | 2013-06-24 14:46:36 +0300 | [diff] [blame] | 477 | .of_match_table = ci_hdrc_imx_dt_ids, |
Peter Chen | 2558c1f | 2014-11-26 13:44:30 +0800 | [diff] [blame] | 478 | .pm = &ci_hdrc_imx_pm_ops, |
Richard Zhao | 1530280 | 2012-07-07 22:56:48 +0800 | [diff] [blame] | 479 | }, |
| 480 | }; |
| 481 | |
Alexander Shishkin | 8e22978 | 2013-06-24 14:46:36 +0300 | [diff] [blame] | 482 | module_platform_driver(ci_hdrc_imx_driver); |
Richard Zhao | 1530280 | 2012-07-07 22:56:48 +0800 | [diff] [blame] | 483 | |
| 484 | MODULE_ALIAS("platform:imx-usb"); |
| 485 | MODULE_LICENSE("GPL v2"); |
Alexander Shishkin | 8e22978 | 2013-06-24 14:46:36 +0300 | [diff] [blame] | 486 | MODULE_DESCRIPTION("CI HDRC i.MX USB binding"); |
Richard Zhao | 1530280 | 2012-07-07 22:56:48 +0800 | [diff] [blame] | 487 | MODULE_AUTHOR("Marek Vasut <marex@denx.de>"); |
| 488 | MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>"); |