ehci-atmel.c (0d768fcfc01098ae0e676c78746c9f4fd8228cd7) ehci-atmel.c (22d9d8e8316d7f69046c8805ce9aa8d9c43d4e5b)
1/*
2 * Driver for EHCI UHP on Atmel chips
3 *
4 * Copyright (C) 2009 Atmel Corporation,
5 * Nicolas Ferre <nicolas.ferre@atmel.com>
6 *
7 * Based on various ehci-*.c drivers
8 *

--- 16 unchanged lines hidden (view full) ---

25#include "ehci.h"
26
27#define DRIVER_DESC "EHCI Atmel driver"
28
29static const char hcd_name[] = "ehci-atmel";
30static struct hc_driver __read_mostly ehci_atmel_hc_driver;
31
32/* interface and function clocks */
1/*
2 * Driver for EHCI UHP on Atmel chips
3 *
4 * Copyright (C) 2009 Atmel Corporation,
5 * Nicolas Ferre <nicolas.ferre@atmel.com>
6 *
7 * Based on various ehci-*.c drivers
8 *

--- 16 unchanged lines hidden (view full) ---

25#include "ehci.h"
26
27#define DRIVER_DESC "EHCI Atmel driver"
28
29static const char hcd_name[] = "ehci-atmel";
30static struct hc_driver __read_mostly ehci_atmel_hc_driver;
31
32/* interface and function clocks */
33static struct clk *iclk, *fclk, *uclk;
33static struct clk *iclk, *fclk;
34static int clocked;
35
36/*-------------------------------------------------------------------------*/
37
38static void atmel_start_clock(void)
39{
34static int clocked;
35
36/*-------------------------------------------------------------------------*/
37
38static void atmel_start_clock(void)
39{
40 if (IS_ENABLED(CONFIG_COMMON_CLK)) {
41 clk_set_rate(uclk, 48000000);
42 clk_prepare_enable(uclk);
43 }
44 clk_prepare_enable(iclk);
45 clk_prepare_enable(fclk);
46 clocked = 1;
47}
48
49static void atmel_stop_clock(void)
50{
51 clk_disable_unprepare(fclk);
52 clk_disable_unprepare(iclk);
40 clk_prepare_enable(iclk);
41 clk_prepare_enable(fclk);
42 clocked = 1;
43}
44
45static void atmel_stop_clock(void)
46{
47 clk_disable_unprepare(fclk);
48 clk_disable_unprepare(iclk);
53 if (IS_ENABLED(CONFIG_COMMON_CLK))
54 clk_disable_unprepare(uclk);
55 clocked = 0;
56}
57
58static void atmel_start_ehci(struct platform_device *pdev)
59{
60 dev_dbg(&pdev->dev, "start\n");
61 atmel_start_clock();
62}

--- 30 unchanged lines hidden (view full) ---

93 }
94
95 /* Right now device-tree probed devices don't get dma_mask set.
96 * Since shared usb code relies on it, set it here for now.
97 * Once we have dma capability bindings this can go away.
98 */
99 if (!pdev->dev.dma_mask)
100 pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
49 clocked = 0;
50}
51
52static void atmel_start_ehci(struct platform_device *pdev)
53{
54 dev_dbg(&pdev->dev, "start\n");
55 atmel_start_clock();
56}

--- 30 unchanged lines hidden (view full) ---

87 }
88
89 /* Right now device-tree probed devices don't get dma_mask set.
90 * Since shared usb code relies on it, set it here for now.
91 * Once we have dma capability bindings this can go away.
92 */
93 if (!pdev->dev.dma_mask)
94 pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
101 if (!pdev->dev.coherent_dma_mask)
102 pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
95 retval = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
96 if (retval)
97 goto fail_create_hcd;
103
104 hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
105 if (!hcd) {
106 retval = -ENOMEM;
107 goto fail_create_hcd;
108 }
109
110 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

--- 20 unchanged lines hidden (view full) ---

131 goto fail_request_resource;
132 }
133 fclk = devm_clk_get(&pdev->dev, "uhpck");
134 if (IS_ERR(fclk)) {
135 dev_err(&pdev->dev, "Error getting function clock\n");
136 retval = -ENOENT;
137 goto fail_request_resource;
138 }
98
99 hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
100 if (!hcd) {
101 retval = -ENOMEM;
102 goto fail_create_hcd;
103 }
104
105 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

--- 20 unchanged lines hidden (view full) ---

126 goto fail_request_resource;
127 }
128 fclk = devm_clk_get(&pdev->dev, "uhpck");
129 if (IS_ERR(fclk)) {
130 dev_err(&pdev->dev, "Error getting function clock\n");
131 retval = -ENOENT;
132 goto fail_request_resource;
133 }
139 if (IS_ENABLED(CONFIG_COMMON_CLK)) {
140 uclk = devm_clk_get(&pdev->dev, "usb_clk");
141 if (IS_ERR(uclk)) {
142 dev_err(&pdev->dev, "failed to get uclk\n");
143 retval = PTR_ERR(uclk);
144 goto fail_request_resource;
145 }
146 }
147
148 ehci = hcd_to_ehci(hcd);
149 /* registers start at offset 0x0 */
150 ehci->caps = hcd->regs;
151
152 atmel_start_ehci(pdev);
153
154 retval = usb_add_hcd(hcd, irq, IRQF_SHARED);

--- 69 unchanged lines hidden --- 		134
135 ehci = hcd_to_ehci(hcd);
136 /* registers start at offset 0x0 */
137 ehci->caps = hcd->regs;
138
139 atmel_start_ehci(pdev);
140
141 retval = usb_add_hcd(hcd, irq, IRQF_SHARED);

--- 69 unchanged lines hidden ---