Root/target/linux/brcm63xx/patches-3.6/402-ehci-add-driver-for-bcm63xx-integrated-controller.patch

1From db58271d5152aa1d3894fdef13ca04379139d5d9 Mon Sep 17 00:00:00 2001
2From: Maxime Bizon <mbizon@freebox.fr>
3Date: Fri, 10 Jun 2011 19:15:47 +0200
4Subject: [PATCH 25/63] ehci: add driver for bcm63xx integrated controller.
5
6---
7 drivers/usb/host/Kconfig | 10 ++-
8 drivers/usb/host/ehci-bcm63xx.c | 186 +++++++++++++++++++++++++++++++++++++++
9 drivers/usb/host/ehci-hcd.c | 5 +
10 3 files changed, 199 insertions(+), 1 deletions(-)
11 create mode 100644 drivers/usb/host/ehci-bcm63xx.c
12
13--- a/drivers/usb/host/Kconfig
14+++ b/drivers/usb/host/Kconfig
15@@ -110,7 +110,8 @@ config USB_EHCI_BIG_ENDIAN_MMIO
16     depends on USB_EHCI_HCD && (PPC_CELLEB || PPC_PS3 || 440EPX || \
17                     ARCH_IXP4XX || XPS_USB_HCD_XILINX || \
18                     PPC_MPC512x || CPU_CAVIUM_OCTEON || \
19- PMC_MSP || SPARC_LEON || MIPS_SEAD3)
20+ PMC_MSP || SPARC_LEON || MIPS_SEAD3 || \
21+ BCM63XX)
22     default y
23 
24 config USB_EHCI_BIG_ENDIAN_DESC
25@@ -134,6 +135,14 @@ config XPS_USB_HCD_XILINX
26 config USB_FSL_MPH_DR_OF
27     tristate
28 
29+config USB_EHCI_BCM63XX
30+ bool "Support for Broadcom 63xx on-chip EHCI USB controller"
31+ depends on USB_EHCI_HCD && BCM63XX
32+ select USB_EHCI_BIG_ENDIAN_MMIO
33+ ---help---
34+ Enables support for the on-chip EHCI controller on
35+ BCM6358 and later chips.
36+
37 config USB_EHCI_FSL
38     bool "Support for Freescale PPC on-chip EHCI USB controller"
39     depends on USB_EHCI_HCD && FSL_SOC
40--- /dev/null
41+++ b/drivers/usb/host/ehci-bcm63xx.c
42@@ -0,0 +1,186 @@
43+/*
44+ * This file is subject to the terms and conditions of the GNU General Public
45+ * License. See the file "COPYING" in the main directory of this archive
46+ * for more details.
47+ *
48+ * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
49+ */
50+
51+#include <linux/init.h>
52+#include <linux/clk.h>
53+#include <linux/platform_device.h>
54+#include <bcm63xx_cpu.h>
55+#include <bcm63xx_regs.h>
56+#include <bcm63xx_io.h>
57+
58+static struct clk *usb_host_clock;
59+
60+static int ehci_bcm63xx_setup(struct usb_hcd *hcd)
61+{
62+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
63+ int retval;
64+
65+ retval = ehci_halt(ehci);
66+ if (retval)
67+ return retval;
68+
69+ retval = ehci_init(hcd);
70+ if (retval)
71+ return retval;
72+
73+ ehci_reset(ehci);
74+ ehci_port_power(ehci, 0);
75+
76+ return retval;
77+}
78+
79+
80+static const struct hc_driver ehci_bcm63xx_hc_driver = {
81+ .description = hcd_name,
82+ .product_desc = "BCM63XX integrated EHCI controller",
83+ .hcd_priv_size = sizeof(struct ehci_hcd),
84+
85+ .irq = ehci_irq,
86+ .flags = HCD_MEMORY | HCD_USB2,
87+
88+ .reset = ehci_bcm63xx_setup,
89+ .start = ehci_run,
90+ .stop = ehci_stop,
91+ .shutdown = ehci_shutdown,
92+
93+ .urb_enqueue = ehci_urb_enqueue,
94+ .urb_dequeue = ehci_urb_dequeue,
95+ .endpoint_disable = ehci_endpoint_disable,
96+
97+ .get_frame_number = ehci_get_frame,
98+
99+ .hub_status_data = ehci_hub_status_data,
100+ .hub_control = ehci_hub_control,
101+ .bus_suspend = ehci_bus_suspend,
102+ .bus_resume = ehci_bus_resume,
103+ .relinquish_port = ehci_relinquish_port,
104+ .port_handed_over = ehci_port_handed_over,
105+};
106+
107+static int __devinit ehci_hcd_bcm63xx_drv_probe(struct platform_device *pdev)
108+{
109+ struct resource *res_mem;
110+ struct usb_hcd *hcd;
111+ struct ehci_hcd *ehci;
112+ struct clk *clk;
113+ u32 reg;
114+ int ret, irq;
115+
116+ res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
117+ irq = platform_get_irq(pdev, 0);;
118+ if (!res_mem || irq < 0)
119+ return -ENODEV;
120+
121+ /* enable USB host clock */
122+ clk = clk_get(&pdev->dev, "usbh");
123+ if (IS_ERR(clk))
124+ return -ENODEV;
125+
126+ clk_enable(clk);
127+ usb_host_clock = clk;
128+ msleep(100);
129+
130+ if (BCMCPU_IS_6358()) {
131+ reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_6358_REG);
132+ reg &= ~USBH_PRIV_SWAP_EHCI_DATA_MASK;
133+ reg |= USBH_PRIV_SWAP_EHCI_ENDN_MASK;
134+ bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SWAP_6358_REG);
135+
136+ /*
137+ * The magic value comes for the original vendor BSP
138+ * and is needed for USB to work. Datasheet does not
139+ * help, so the magic value is used as-is.
140+ */
141+ bcm_rset_writel(RSET_USBH_PRIV, 0x1c0020,
142+ USBH_PRIV_TEST_6358_REG);
143+
144+ } else if (BCMCPU_IS_6368()) {
145+
146+ reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_6368_REG);
147+ reg &= ~USBH_PRIV_SWAP_EHCI_DATA_MASK;
148+ reg |= USBH_PRIV_SWAP_EHCI_ENDN_MASK;
149+ bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SWAP_6368_REG);
150+
151+ reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SETUP_6368_REG);
152+ reg |= USBH_PRIV_SETUP_IOC_MASK;
153+ bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SETUP_6368_REG);
154+ }
155+
156+ hcd = usb_create_hcd(&ehci_bcm63xx_hc_driver, &pdev->dev, "bcm63xx");
157+ if (!hcd)
158+ return -ENOMEM;
159+ hcd->rsrc_start = res_mem->start;
160+ hcd->rsrc_len = res_mem->end - res_mem->start + 1;
161+
162+ if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
163+ pr_debug("request_mem_region failed\n");
164+ ret = -EBUSY;
165+ goto out;
166+ }
167+
168+ hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
169+ if (!hcd->regs) {
170+ pr_debug("ioremap failed\n");
171+ ret = -EIO;
172+ goto out1;
173+ }
174+
175+ ehci = hcd_to_ehci(hcd);
176+ ehci->big_endian_mmio = 1;
177+ ehci->big_endian_desc = 0;
178+ ehci->caps = hcd->regs;
179+ ehci->regs = hcd->regs +
180+ HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
181+ ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
182+ ehci->sbrn = 0x20;
183+ ehci->ignore_oc = 1;
184+
185+ ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
186+ if (ret)
187+ goto out2;
188+
189+ platform_set_drvdata(pdev, hcd);
190+ return 0;
191+
192+out2:
193+ iounmap(hcd->regs);
194+out1:
195+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
196+out:
197+ usb_put_hcd(hcd);
198+ return ret;
199+}
200+
201+static int __devexit ehci_hcd_bcm63xx_drv_remove(struct platform_device *pdev)
202+{
203+ struct usb_hcd *hcd;
204+
205+ hcd = platform_get_drvdata(pdev);
206+ usb_remove_hcd(hcd);
207+ iounmap(hcd->regs);
208+ usb_put_hcd(hcd);
209+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
210+ if (usb_host_clock) {
211+ clk_disable(usb_host_clock);
212+ clk_put(usb_host_clock);
213+ }
214+ platform_set_drvdata(pdev, NULL);
215+ return 0;
216+}
217+
218+static struct platform_driver ehci_hcd_bcm63xx_driver = {
219+ .probe = ehci_hcd_bcm63xx_drv_probe,
220+ .remove = __devexit_p(ehci_hcd_bcm63xx_drv_remove),
221+ .shutdown = usb_hcd_platform_shutdown,
222+ .driver = {
223+ .name = "bcm63xx_ehci",
224+ .owner = THIS_MODULE,
225+ },
226+};
227+
228+MODULE_ALIAS("platform:bcm63xx_ehci");
229--- a/drivers/usb/host/ehci-hcd.c
230+++ b/drivers/usb/host/ehci-hcd.c
231@@ -1339,6 +1339,11 @@ MODULE_LICENSE ("GPL");
232 #define PLATFORM_DRIVER ehci_platform_driver
233 #endif
234 
235+#ifdef CONFIG_USB_EHCI_BCM63XX
236+#include "ehci-bcm63xx.c"
237+#define PLATFORM_DRIVER ehci_hcd_bcm63xx_driver
238+#endif
239+
240 #if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER) && \
241     !defined(PS3_SYSTEM_BUS_DRIVER) && !defined(OF_PLATFORM_DRIVER) && \
242     !defined(XILINX_OF_PLATFORM_DRIVER)
243

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