This source file includes following definitions.
- sdhci_brcmstb_probe
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8 #include <linux/io.h>
9 #include <linux/mmc/host.h>
10 #include <linux/module.h>
11 #include <linux/of.h>
12
13 #include "sdhci-pltfm.h"
14
15 static const struct sdhci_ops sdhci_brcmstb_ops = {
16 .set_clock = sdhci_set_clock,
17 .set_bus_width = sdhci_set_bus_width,
18 .reset = sdhci_reset,
19 .set_uhs_signaling = sdhci_set_uhs_signaling,
20 };
21
22 static const struct sdhci_pltfm_data sdhci_brcmstb_pdata = {
23 .ops = &sdhci_brcmstb_ops,
24 };
25
26 static int sdhci_brcmstb_probe(struct platform_device *pdev)
27 {
28 struct sdhci_host *host;
29 struct sdhci_pltfm_host *pltfm_host;
30 struct clk *clk;
31 int res;
32
33 clk = devm_clk_get(&pdev->dev, NULL);
34 if (IS_ERR(clk)) {
35 dev_err(&pdev->dev, "Clock not found in Device Tree\n");
36 clk = NULL;
37 }
38 res = clk_prepare_enable(clk);
39 if (res)
40 return res;
41
42 host = sdhci_pltfm_init(pdev, &sdhci_brcmstb_pdata, 0);
43 if (IS_ERR(host)) {
44 res = PTR_ERR(host);
45 goto err_clk;
46 }
47
48 sdhci_get_of_property(pdev);
49 res = mmc_of_parse(host->mmc);
50 if (res)
51 goto err;
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58 host->caps = sdhci_readl(host, SDHCI_CAPABILITIES);
59 if (of_device_is_compatible(pdev->dev.of_node, "brcm,bcm7425-sdhci"))
60 host->caps &= ~SDHCI_CAN_64BIT;
61 host->caps1 = sdhci_readl(host, SDHCI_CAPABILITIES_1);
62 host->caps1 &= ~(SDHCI_SUPPORT_SDR50 | SDHCI_SUPPORT_SDR104 |
63 SDHCI_SUPPORT_DDR50);
64 host->quirks |= SDHCI_QUIRK_MISSING_CAPS |
65 SDHCI_QUIRK_BROKEN_TIMEOUT_VAL;
66
67 res = sdhci_add_host(host);
68 if (res)
69 goto err;
70
71 pltfm_host = sdhci_priv(host);
72 pltfm_host->clk = clk;
73 return res;
74
75 err:
76 sdhci_pltfm_free(pdev);
77 err_clk:
78 clk_disable_unprepare(clk);
79 return res;
80 }
81
82 static const struct of_device_id sdhci_brcm_of_match[] = {
83 { .compatible = "brcm,bcm7425-sdhci" },
84 { .compatible = "brcm,bcm7445-sdhci" },
85 {},
86 };
87 MODULE_DEVICE_TABLE(of, sdhci_brcm_of_match);
88
89 static struct platform_driver sdhci_brcmstb_driver = {
90 .driver = {
91 .name = "sdhci-brcmstb",
92 .pm = &sdhci_pltfm_pmops,
93 .of_match_table = of_match_ptr(sdhci_brcm_of_match),
94 },
95 .probe = sdhci_brcmstb_probe,
96 .remove = sdhci_pltfm_unregister,
97 };
98
99 module_platform_driver(sdhci_brcmstb_driver);
100
101 MODULE_DESCRIPTION("SDHCI driver for Broadcom BRCMSTB SoCs");
102 MODULE_AUTHOR("Broadcom");
103 MODULE_LICENSE("GPL v2");