Root/target/linux/brcm63xx/patches-3.3/011-add_bcm63xx_ehci_controller.patch

1From 0f7d8ff44dc9e7048c141e6589bb590438cfc656 Mon Sep 17 00:00:00 2001
2From: Maxime Bizon <mbizon@freebox.fr>
3Date: Fri, 10 Jun 2011 19:15:47 +0200
4Subject: [PATCH 22/57] ehci: add driver for bcm63xx integrated controller.
5
6---
7 drivers/usb/host/Kconfig | 10 ++-
8 drivers/usb/host/ehci-bcm63xx.c | 185 +++++++++++++++++++++++++++++++++++++++
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@@ -106,7 +106,7 @@ 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)
20+ PMC_MSP || SPARC_LEON || BCM63XX)
21     default y
22 
23 config USB_EHCI_BIG_ENDIAN_DESC
24@@ -129,6 +129,14 @@ config XPS_USB_HCD_XILINX
25 config USB_FSL_MPH_DR_OF
26     tristate
27 
28+config USB_EHCI_BCM63XX
29+ bool "Support for Broadcom 63xx on-chip EHCI USB controller"
30+ depends on USB_EHCI_HCD && BCM63XX
31+ select USB_EHCI_BIG_ENDIAN_MMIO
32+ ---help---
33+ Enables support for the on-chip EHCI controller on
34+ BCM6358 and later chips.
35+
36 config USB_EHCI_FSL
37     bool "Support for Freescale PPC on-chip EHCI USB controller"
38     depends on USB_EHCI_HCD && FSL_SOC
39--- /dev/null
40+++ b/drivers/usb/host/ehci-bcm63xx.c
41@@ -0,0 +1,185 @@
42+/*
43+ * This file is subject to the terms and conditions of the GNU General Public
44+ * License. See the file "COPYING" in the main directory of this archive
45+ * for more details.
46+ *
47+ * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
48+ */
49+
50+#include <linux/init.h>
51+#include <linux/clk.h>
52+#include <linux/platform_device.h>
53+#include <bcm63xx_cpu.h>
54+#include <bcm63xx_regs.h>
55+#include <bcm63xx_io.h>
56+
57+static struct clk *usb_host_clock;
58+
59+static int ehci_bcm63xx_setup(struct usb_hcd *hcd)
60+{
61+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
62+ int retval;
63+
64+ retval = ehci_halt(ehci);
65+ if (retval)
66+ return retval;
67+
68+ retval = ehci_init(hcd);
69+ if (retval)
70+ return retval;
71+
72+ ehci_reset(ehci);
73+ ehci_port_power(ehci, 0);
74+
75+ return retval;
76+}
77+
78+
79+static const struct hc_driver ehci_bcm63xx_hc_driver = {
80+ .description = hcd_name,
81+ .product_desc = "BCM63XX integrated EHCI controller",
82+ .hcd_priv_size = sizeof(struct ehci_hcd),
83+
84+ .irq = ehci_irq,
85+ .flags = HCD_MEMORY | HCD_USB2,
86+
87+ .reset = ehci_bcm63xx_setup,
88+ .start = ehci_run,
89+ .stop = ehci_stop,
90+ .shutdown = ehci_shutdown,
91+
92+ .urb_enqueue = ehci_urb_enqueue,
93+ .urb_dequeue = ehci_urb_dequeue,
94+ .endpoint_disable = ehci_endpoint_disable,
95+
96+ .get_frame_number = ehci_get_frame,
97+
98+ .hub_status_data = ehci_hub_status_data,
99+ .hub_control = ehci_hub_control,
100+ .bus_suspend = ehci_bus_suspend,
101+ .bus_resume = ehci_bus_resume,
102+ .relinquish_port = ehci_relinquish_port,
103+ .port_handed_over = ehci_port_handed_over,
104+};
105+
106+static int __devinit ehci_hcd_bcm63xx_drv_probe(struct platform_device *pdev)
107+{
108+ struct resource *res_mem;
109+ struct usb_hcd *hcd;
110+ struct ehci_hcd *ehci;
111+ struct clk *clk;
112+ u32 reg;
113+ int ret, irq;
114+
115+ res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
116+ irq = platform_get_irq(pdev, 0);;
117+ if (!res_mem || irq < 0)
118+ return -ENODEV;
119+
120+ /* enable USB host clock */
121+ clk = clk_get(&pdev->dev, "usbh");
122+ if (IS_ERR(clk))
123+ return -ENODEV;
124+
125+ clk_enable(clk);
126+ usb_host_clock = clk;
127+ msleep(100);
128+
129+ if (BCMCPU_IS_6358()) {
130+ reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_6358_REG);
131+ reg &= ~USBH_PRIV_SWAP_EHCI_DATA_MASK;
132+ reg |= USBH_PRIV_SWAP_EHCI_ENDN_MASK;
133+ bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SWAP_6358_REG);
134+
135+ /*
136+ * The magic value comes for the original vendor BSP
137+ * and is needed for USB to work. Datasheet does not
138+ * help, so the magic value is used as-is.
139+ */
140+ bcm_rset_writel(RSET_USBH_PRIV, 0x1c0020,
141+ USBH_PRIV_TEST_6358_REG);
142+
143+ } else if (BCMCPU_IS_6368()) {
144+
145+ reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_6368_REG);
146+ reg &= ~USBH_PRIV_SWAP_EHCI_DATA_MASK;
147+ reg |= USBH_PRIV_SWAP_EHCI_ENDN_MASK;
148+ bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SWAP_6368_REG);
149+
150+ reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SETUP_6368_REG);
151+ reg |= USBH_PRIV_SETUP_IOC_MASK;
152+ bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SETUP_6368_REG);
153+ }
154+
155+ hcd = usb_create_hcd(&ehci_bcm63xx_hc_driver, &pdev->dev, "bcm63xx");
156+ if (!hcd)
157+ return -ENOMEM;
158+ hcd->rsrc_start = res_mem->start;
159+ hcd->rsrc_len = res_mem->end - res_mem->start + 1;
160+
161+ if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
162+ pr_debug("request_mem_region failed\n");
163+ ret = -EBUSY;
164+ goto out;
165+ }
166+
167+ hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
168+ if (!hcd->regs) {
169+ pr_debug("ioremap failed\n");
170+ ret = -EIO;
171+ goto out1;
172+ }
173+
174+ ehci = hcd_to_ehci(hcd);
175+ ehci->big_endian_mmio = 1;
176+ ehci->big_endian_desc = 0;
177+ ehci->caps = hcd->regs;
178+ ehci->regs = hcd->regs +
179+ HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
180+ ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
181+ ehci->sbrn = 0x20;
182+
183+ ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
184+ if (ret)
185+ goto out2;
186+
187+ platform_set_drvdata(pdev, hcd);
188+ return 0;
189+
190+out2:
191+ iounmap(hcd->regs);
192+out1:
193+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
194+out:
195+ usb_put_hcd(hcd);
196+ return ret;
197+}
198+
199+static int __devexit ehci_hcd_bcm63xx_drv_remove(struct platform_device *pdev)
200+{
201+ struct usb_hcd *hcd;
202+
203+ hcd = platform_get_drvdata(pdev);
204+ usb_remove_hcd(hcd);
205+ iounmap(hcd->regs);
206+ usb_put_hcd(hcd);
207+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
208+ if (usb_host_clock) {
209+ clk_disable(usb_host_clock);
210+ clk_put(usb_host_clock);
211+ }
212+ platform_set_drvdata(pdev, NULL);
213+ return 0;
214+}
215+
216+static struct platform_driver ehci_hcd_bcm63xx_driver = {
217+ .probe = ehci_hcd_bcm63xx_drv_probe,
218+ .remove = __devexit_p(ehci_hcd_bcm63xx_drv_remove),
219+ .shutdown = usb_hcd_platform_shutdown,
220+ .driver = {
221+ .name = "bcm63xx_ehci",
222+ .owner = THIS_MODULE,
223+ },
224+};
225+
226+MODULE_ALIAS("platform:bcm63xx_ehci");
227--- a/drivers/usb/host/ehci-hcd.c
228+++ b/drivers/usb/host/ehci-hcd.c
229@@ -1376,6 +1376,11 @@ MODULE_LICENSE ("GPL");
230 #define PLATFORM_DRIVER ehci_mv_driver
231 #endif
232 
233+#ifdef CONFIG_USB_EHCI_BCM63XX
234+#include "ehci-bcm63xx.c"
235+#define PLATFORM_DRIVER ehci_hcd_bcm63xx_driver
236+#endif
237+
238 #if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER) && \
239     !defined(PS3_SYSTEM_BUS_DRIVER) && !defined(OF_PLATFORM_DRIVER) && \
240     !defined(XILINX_OF_PLATFORM_DRIVER)
241

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