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authorBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>2014-08-22 12:59:04 -0400
committerFelipe Balbi <balbi@ti.com>2014-09-02 10:16:44 -0400
commit1c3c0528876e2dd86cfb86e96e03c38ef19858fe (patch)
tree81da6d4a003260f16755ab2592a440a4c8c87e7f /drivers/usb/phy
parenta8b5b12eff1510d701ac5ad321e215d7153c96c3 (diff)
usb: phy: samsung: remove old USB 3.0 PHY driver
drivers/usb/phy/phy-samsung-usb3 driver got replaced by drivers/phy/phy-samsung-usb3 one and is no longer used. Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Reviewed-by: Vivek Gautam <gautam.vivek@samsung.com> Reviewed-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Kishon Vijay Abraham I <kishon@ti.com> Cc: Kamil Debski <k.debski@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/phy')
-rw-r--r--drivers/usb/phy/Kconfig8
-rw-r--r--drivers/usb/phy/Makefile1
-rw-r--r--drivers/usb/phy/phy-samsung-usb3.c350
3 files changed, 0 insertions, 359 deletions
diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig
index 452e252c1efd..0cd1f44f0ee8 100644
--- a/drivers/usb/phy/Kconfig
+++ b/drivers/usb/phy/Kconfig
@@ -78,14 +78,6 @@ config SAMSUNG_USBPHY
78 This driver provides common interface to interact, for Samsung USB 2.0 PHY 78 This driver provides common interface to interact, for Samsung USB 2.0 PHY
79 driver and later for Samsung USB 3.0 PHY driver. 79 driver and later for Samsung USB 3.0 PHY driver.
80 80
81config SAMSUNG_USB3PHY
82 tristate "Samsung USB 3.0 PHY controller Driver"
83 select SAMSUNG_USBPHY
84 select USB_PHY
85 help
86 Enable this to support Samsung USB 3.0 (Super Speed) phy controller
87 for samsung SoCs.
88
89config TWL6030_USB 81config TWL6030_USB
90 tristate "TWL6030 USB Transceiver Driver" 82 tristate "TWL6030 USB Transceiver Driver"
91 depends on TWL4030_CORE && OMAP_USB2 && USB_MUSB_OMAP2PLUS 83 depends on TWL4030_CORE && OMAP_USB2 && USB_MUSB_OMAP2PLUS
diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile
index c651005432b4..75f2bba58c84 100644
--- a/drivers/usb/phy/Makefile
+++ b/drivers/usb/phy/Makefile
@@ -15,7 +15,6 @@ obj-$(CONFIG_AM335X_CONTROL_USB) += phy-am335x-control.o
15obj-$(CONFIG_AM335X_PHY_USB) += phy-am335x.o 15obj-$(CONFIG_AM335X_PHY_USB) += phy-am335x.o
16obj-$(CONFIG_OMAP_OTG) += phy-omap-otg.o 16obj-$(CONFIG_OMAP_OTG) += phy-omap-otg.o
17obj-$(CONFIG_SAMSUNG_USBPHY) += phy-samsung-usb.o 17obj-$(CONFIG_SAMSUNG_USBPHY) += phy-samsung-usb.o
18obj-$(CONFIG_SAMSUNG_USB3PHY) += phy-samsung-usb3.o
19obj-$(CONFIG_TWL6030_USB) += phy-twl6030-usb.o 18obj-$(CONFIG_TWL6030_USB) += phy-twl6030-usb.o
20obj-$(CONFIG_USB_EHCI_TEGRA) += phy-tegra-usb.o 19obj-$(CONFIG_USB_EHCI_TEGRA) += phy-tegra-usb.o
21obj-$(CONFIG_USB_GPIO_VBUS) += phy-gpio-vbus-usb.o 20obj-$(CONFIG_USB_GPIO_VBUS) += phy-gpio-vbus-usb.o
diff --git a/drivers/usb/phy/phy-samsung-usb3.c b/drivers/usb/phy/phy-samsung-usb3.c
deleted file mode 100644
index cc0819248acf..000000000000
--- a/drivers/usb/phy/phy-samsung-usb3.c
+++ /dev/null
@@ -1,350 +0,0 @@
1/* linux/drivers/usb/phy/phy-samsung-usb3.c
2 *
3 * Copyright (c) 2013 Samsung Electronics Co., Ltd.
4 * http://www.samsung.com
5 *
6 * Author: Vivek Gautam <gautam.vivek@samsung.com>
7 *
8 * Samsung USB 3.0 PHY transceiver; talks to DWC3 controller.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 */
19
20#include <linux/module.h>
21#include <linux/platform_device.h>
22#include <linux/clk.h>
23#include <linux/delay.h>
24#include <linux/err.h>
25#include <linux/io.h>
26#include <linux/of.h>
27#include <linux/usb/samsung_usb_phy.h>
28#include <linux/platform_data/samsung-usbphy.h>
29
30#include "phy-samsung-usb.h"
31
32/*
33 * Sets the phy clk as EXTREFCLK (XXTI) which is internal clock from clock core.
34 */
35static u32 samsung_usb3phy_set_refclk(struct samsung_usbphy *sphy)
36{
37 u32 reg;
38 u32 refclk;
39
40 refclk = sphy->ref_clk_freq;
41
42 reg = PHYCLKRST_REFCLKSEL_EXT_REFCLK |
43 PHYCLKRST_FSEL(refclk);
44
45 switch (refclk) {
46 case FSEL_CLKSEL_50M:
47 reg |= (PHYCLKRST_MPLL_MULTIPLIER_50M_REF |
48 PHYCLKRST_SSC_REFCLKSEL(0x00));
49 break;
50 case FSEL_CLKSEL_20M:
51 reg |= (PHYCLKRST_MPLL_MULTIPLIER_20MHZ_REF |
52 PHYCLKRST_SSC_REFCLKSEL(0x00));
53 break;
54 case FSEL_CLKSEL_19200K:
55 reg |= (PHYCLKRST_MPLL_MULTIPLIER_19200KHZ_REF |
56 PHYCLKRST_SSC_REFCLKSEL(0x88));
57 break;
58 case FSEL_CLKSEL_24M:
59 default:
60 reg |= (PHYCLKRST_MPLL_MULTIPLIER_24MHZ_REF |
61 PHYCLKRST_SSC_REFCLKSEL(0x88));
62 break;
63 }
64
65 return reg;
66}
67
68static void samsung_exynos5_usb3phy_enable(struct samsung_usbphy *sphy)
69{
70 void __iomem *regs = sphy->regs;
71 u32 phyparam0;
72 u32 phyparam1;
73 u32 linksystem;
74 u32 phybatchg;
75 u32 phytest;
76 u32 phyclkrst;
77
78 /* Reset USB 3.0 PHY */
79 writel(0x0, regs + EXYNOS5_DRD_PHYREG0);
80
81 phyparam0 = readl(regs + EXYNOS5_DRD_PHYPARAM0);
82 /* Select PHY CLK source */
83 phyparam0 &= ~PHYPARAM0_REF_USE_PAD;
84 /* Set Loss-of-Signal Detector sensitivity */
85 phyparam0 &= ~PHYPARAM0_REF_LOSLEVEL_MASK;
86 phyparam0 |= PHYPARAM0_REF_LOSLEVEL;
87 writel(phyparam0, regs + EXYNOS5_DRD_PHYPARAM0);
88
89 writel(0x0, regs + EXYNOS5_DRD_PHYRESUME);
90
91 /*
92 * Setting the Frame length Adj value[6:1] to default 0x20
93 * See xHCI 1.0 spec, 5.2.4
94 */
95 linksystem = LINKSYSTEM_XHCI_VERSION_CONTROL |
96 LINKSYSTEM_FLADJ(0x20);
97 writel(linksystem, regs + EXYNOS5_DRD_LINKSYSTEM);
98
99 phyparam1 = readl(regs + EXYNOS5_DRD_PHYPARAM1);
100 /* Set Tx De-Emphasis level */
101 phyparam1 &= ~PHYPARAM1_PCS_TXDEEMPH_MASK;
102 phyparam1 |= PHYPARAM1_PCS_TXDEEMPH;
103 writel(phyparam1, regs + EXYNOS5_DRD_PHYPARAM1);
104
105 phybatchg = readl(regs + EXYNOS5_DRD_PHYBATCHG);
106 phybatchg |= PHYBATCHG_UTMI_CLKSEL;
107 writel(phybatchg, regs + EXYNOS5_DRD_PHYBATCHG);
108
109 /* PHYTEST POWERDOWN Control */
110 phytest = readl(regs + EXYNOS5_DRD_PHYTEST);
111 phytest &= ~(PHYTEST_POWERDOWN_SSP |
112 PHYTEST_POWERDOWN_HSP);
113 writel(phytest, regs + EXYNOS5_DRD_PHYTEST);
114
115 /* UTMI Power Control */
116 writel(PHYUTMI_OTGDISABLE, regs + EXYNOS5_DRD_PHYUTMI);
117
118 phyclkrst = samsung_usb3phy_set_refclk(sphy);
119
120 phyclkrst |= PHYCLKRST_PORTRESET |
121 /* Digital power supply in normal operating mode */
122 PHYCLKRST_RETENABLEN |
123 /* Enable ref clock for SS function */
124 PHYCLKRST_REF_SSP_EN |
125 /* Enable spread spectrum */
126 PHYCLKRST_SSC_EN |
127 /* Power down HS Bias and PLL blocks in suspend mode */
128 PHYCLKRST_COMMONONN;
129
130 writel(phyclkrst, regs + EXYNOS5_DRD_PHYCLKRST);
131
132 udelay(10);
133
134 phyclkrst &= ~(PHYCLKRST_PORTRESET);
135 writel(phyclkrst, regs + EXYNOS5_DRD_PHYCLKRST);
136}
137
138static void samsung_exynos5_usb3phy_disable(struct samsung_usbphy *sphy)
139{
140 u32 phyutmi;
141 u32 phyclkrst;
142 u32 phytest;
143 void __iomem *regs = sphy->regs;
144
145 phyutmi = PHYUTMI_OTGDISABLE |
146 PHYUTMI_FORCESUSPEND |
147 PHYUTMI_FORCESLEEP;
148 writel(phyutmi, regs + EXYNOS5_DRD_PHYUTMI);
149
150 /* Resetting the PHYCLKRST enable bits to reduce leakage current */
151 phyclkrst = readl(regs + EXYNOS5_DRD_PHYCLKRST);
152 phyclkrst &= ~(PHYCLKRST_REF_SSP_EN |
153 PHYCLKRST_SSC_EN |
154 PHYCLKRST_COMMONONN);
155 writel(phyclkrst, regs + EXYNOS5_DRD_PHYCLKRST);
156
157 /* Control PHYTEST to remove leakage current */
158 phytest = readl(regs + EXYNOS5_DRD_PHYTEST);
159 phytest |= (PHYTEST_POWERDOWN_SSP |
160 PHYTEST_POWERDOWN_HSP);
161 writel(phytest, regs + EXYNOS5_DRD_PHYTEST);
162}
163
164static int samsung_usb3phy_init(struct usb_phy *phy)
165{
166 struct samsung_usbphy *sphy;
167 unsigned long flags;
168 int ret = 0;
169
170 sphy = phy_to_sphy(phy);
171
172 /* Enable the phy clock */
173 ret = clk_prepare_enable(sphy->clk);
174 if (ret) {
175 dev_err(sphy->dev, "%s: clk_prepare_enable failed\n", __func__);
176 return ret;
177 }
178
179 spin_lock_irqsave(&sphy->lock, flags);
180
181 /* setting default phy-type for USB 3.0 */
182 samsung_usbphy_set_type(&sphy->phy, USB_PHY_TYPE_DEVICE);
183
184 /* Disable phy isolation */
185 if (sphy->drv_data->set_isolation)
186 sphy->drv_data->set_isolation(sphy, false);
187
188 /* Initialize usb phy registers */
189 sphy->drv_data->phy_enable(sphy);
190
191 spin_unlock_irqrestore(&sphy->lock, flags);
192
193 /* Disable the phy clock */
194 clk_disable_unprepare(sphy->clk);
195
196 return ret;
197}
198
199/*
200 * The function passed to the usb driver for phy shutdown
201 */
202static void samsung_usb3phy_shutdown(struct usb_phy *phy)
203{
204 struct samsung_usbphy *sphy;
205 unsigned long flags;
206
207 sphy = phy_to_sphy(phy);
208
209 if (clk_prepare_enable(sphy->clk)) {
210 dev_err(sphy->dev, "%s: clk_prepare_enable failed\n", __func__);
211 return;
212 }
213
214 spin_lock_irqsave(&sphy->lock, flags);
215
216 /* setting default phy-type for USB 3.0 */
217 samsung_usbphy_set_type(&sphy->phy, USB_PHY_TYPE_DEVICE);
218
219 /* De-initialize usb phy registers */
220 sphy->drv_data->phy_disable(sphy);
221
222 /* Enable phy isolation */
223 if (sphy->drv_data->set_isolation)
224 sphy->drv_data->set_isolation(sphy, true);
225
226 spin_unlock_irqrestore(&sphy->lock, flags);
227
228 clk_disable_unprepare(sphy->clk);
229}
230
231static int samsung_usb3phy_probe(struct platform_device *pdev)
232{
233 struct samsung_usbphy *sphy;
234 struct samsung_usbphy_data *pdata = dev_get_platdata(&pdev->dev);
235 struct device *dev = &pdev->dev;
236 struct resource *phy_mem;
237 void __iomem *phy_base;
238 struct clk *clk;
239 int ret;
240
241 phy_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
242 phy_base = devm_ioremap_resource(dev, phy_mem);
243 if (IS_ERR(phy_base))
244 return PTR_ERR(phy_base);
245
246 sphy = devm_kzalloc(dev, sizeof(*sphy), GFP_KERNEL);
247 if (!sphy)
248 return -ENOMEM;
249
250 clk = devm_clk_get(dev, "usbdrd30");
251 if (IS_ERR(clk)) {
252 dev_err(dev, "Failed to get device clock\n");
253 return PTR_ERR(clk);
254 }
255
256 sphy->dev = dev;
257
258 if (dev->of_node) {
259 ret = samsung_usbphy_parse_dt(sphy);
260 if (ret < 0)
261 return ret;
262 } else {
263 if (!pdata) {
264 dev_err(dev, "no platform data specified\n");
265 return -EINVAL;
266 }
267 }
268
269 sphy->plat = pdata;
270 sphy->regs = phy_base;
271 sphy->clk = clk;
272 sphy->phy.dev = sphy->dev;
273 sphy->phy.label = "samsung-usb3phy";
274 sphy->phy.type = USB_PHY_TYPE_USB3;
275 sphy->phy.init = samsung_usb3phy_init;
276 sphy->phy.shutdown = samsung_usb3phy_shutdown;
277 sphy->drv_data = samsung_usbphy_get_driver_data(pdev);
278
279 sphy->ref_clk_freq = samsung_usbphy_get_refclk_freq(sphy);
280 if (sphy->ref_clk_freq < 0)
281 return -EINVAL;
282
283 spin_lock_init(&sphy->lock);
284
285 platform_set_drvdata(pdev, sphy);
286
287 return usb_add_phy_dev(&sphy->phy);
288}
289
290static int samsung_usb3phy_remove(struct platform_device *pdev)
291{
292 struct samsung_usbphy *sphy = platform_get_drvdata(pdev);
293
294 usb_remove_phy(&sphy->phy);
295
296 if (sphy->pmuregs)
297 iounmap(sphy->pmuregs);
298 if (sphy->sysreg)
299 iounmap(sphy->sysreg);
300
301 return 0;
302}
303
304static struct samsung_usbphy_drvdata usb3phy_exynos5 = {
305 .cpu_type = TYPE_EXYNOS5250,
306 .devphy_en_mask = EXYNOS_USBPHY_ENABLE,
307 .rate_to_clksel = samsung_usbphy_rate_to_clksel_4x12,
308 .set_isolation = samsung_usbphy_set_isolation_4210,
309 .phy_enable = samsung_exynos5_usb3phy_enable,
310 .phy_disable = samsung_exynos5_usb3phy_disable,
311};
312
313#ifdef CONFIG_OF
314static const struct of_device_id samsung_usbphy_dt_match[] = {
315 {
316 .compatible = "samsung,exynos5250-usb3phy",
317 .data = &usb3phy_exynos5
318 },
319 {},
320};
321MODULE_DEVICE_TABLE(of, samsung_usbphy_dt_match);
322#endif
323
324static struct platform_device_id samsung_usbphy_driver_ids[] = {
325 {
326 .name = "exynos5250-usb3phy",
327 .driver_data = (unsigned long)&usb3phy_exynos5,
328 },
329 {},
330};
331
332MODULE_DEVICE_TABLE(platform, samsung_usbphy_driver_ids);
333
334static struct platform_driver samsung_usb3phy_driver = {
335 .probe = samsung_usb3phy_probe,
336 .remove = samsung_usb3phy_remove,
337 .id_table = samsung_usbphy_driver_ids,
338 .driver = {
339 .name = "samsung-usb3phy",
340 .owner = THIS_MODULE,
341 .of_match_table = of_match_ptr(samsung_usbphy_dt_match),
342 },
343};
344
345module_platform_driver(samsung_usb3phy_driver);
346
347MODULE_DESCRIPTION("Samsung USB 3.0 phy controller");
348MODULE_AUTHOR("Vivek Gautam <gautam.vivek@samsung.com>");
349MODULE_LICENSE("GPL");
350MODULE_ALIAS("platform:samsung-usb3phy");
generated by cgit v1.2.2 (git 2.25.0) at 2025-09-03 01:04:21 -0400