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Diffstat (limited to 'arch/arm/mach-u300/mmc.c')
-rw-r--r--arch/arm/mach-u300/mmc.c64
1 files changed, 4 insertions, 60 deletions
diff --git a/arch/arm/mach-u300/mmc.c b/arch/arm/mach-u300/mmc.c
index 7b6b016786bb..109f5a6e71c7 100644
--- a/arch/arm/mach-u300/mmc.c
+++ b/arch/arm/mach-u300/mmc.c
@@ -40,64 +40,6 @@ static unsigned int mmc_status(struct device *dev)
40 return mmci_card->mmc_inserted; 40 return mmci_card->mmc_inserted;
41} 41}
42 42
43/*
44 * Here follows a large chunk of code which will only be enabled if you
45 * have both the AB3100 chip mounted and the MMC subsystem activated.
46 */
47
48static u32 mmc_translate_vdd(struct device *dev, unsigned int voltage)
49{
50 int v;
51
52 /*
53 * MMC Spec:
54 * bit 7: 1.70 - 1.95V
55 * bit 8 - 14: 2.0 - 2.6V
56 * bit 15 - 23: 2.7 - 3.6V
57 *
58 * ab3100 voltages:
59 * 000 - 2.85V
60 * 001 - 2.75V
61 * 010 - 1.8V
62 * 011 - 1.5V
63 */
64 switch (voltage) {
65 case 8:
66 v = 3;
67 break;
68 case 9:
69 case 10:
70 case 11:
71 case 12:
72 case 13:
73 case 14:
74 case 15:
75 v = 1;
76 break;
77 case 16:
78 v = 1;
79 break;
80 case 17:
81 case 18:
82 case 19:
83 case 20:
84 case 21:
85 case 22:
86 case 23:
87 case 24:
88 v = 0;
89 break;
90 default:
91 v = 0;
92 break;
93 }
94
95 /* PL180 voltage register bits */
96 return v << 2;
97}
98
99
100
101static int mmci_callback(void *data) 43static int mmci_callback(void *data)
102{ 44{
103 struct mmci_card_event *mmci_card = data; 45 struct mmci_card_event *mmci_card = data;
@@ -154,9 +96,11 @@ int __devinit mmc_init(struct amba_device *adev)
154 if (!mmci_card) 96 if (!mmci_card)
155 return -ENOMEM; 97 return -ENOMEM;
156 98
99 /*
100 * Do not set ocr_mask or voltage translation function,
101 * we have a regulator we can control instead.
102 */
157 /* Nominally 2.85V on our platform */ 103 /* Nominally 2.85V on our platform */
158 mmci_card->mmc0_plat_data.ocr_mask = MMC_VDD_28_29;
159 mmci_card->mmc0_plat_data.translate_vdd = mmc_translate_vdd;
160 mmci_card->mmc0_plat_data.status = mmc_status; 104 mmci_card->mmc0_plat_data.status = mmc_status;
161 mmci_card->mmc0_plat_data.gpio_wp = -1; 105 mmci_card->mmc0_plat_data.gpio_wp = -1;
162 mmci_card->mmc0_plat_data.gpio_cd = -1; 106 mmci_card->mmc0_plat_data.gpio_cd = -1;