Merge branch 'stable/generic' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen
[pandora-kernel.git] / arch / arm / mach-cns3xxx / devices.c
1 /*
2  * CNS3xxx common devices
3  *
4  * Copyright 2008 Cavium Networks
5  *                Scott Shu
6  * Copyright 2010 MontaVista Software, LLC.
7  *                Anton Vorontsov <avorontsov@mvista.com>
8  *
9  * This file is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License, Version 2, as
11  * published by the Free Software Foundation.
12  */
13
14 #include <linux/io.h>
15 #include <linux/init.h>
16 #include <linux/compiler.h>
17 #include <linux/dma-mapping.h>
18 #include <linux/platform_device.h>
19 #include <mach/cns3xxx.h>
20 #include <mach/irqs.h>
21 #include <mach/pm.h>
22 #include "core.h"
23 #include "devices.h"
24
25 /*
26  * AHCI
27  */
28 static struct resource cns3xxx_ahci_resource[] = {
29         [0] = {
30                 .start  = CNS3XXX_SATA2_BASE,
31                 .end    = CNS3XXX_SATA2_BASE + CNS3XXX_SATA2_SIZE - 1,
32                 .flags  = IORESOURCE_MEM,
33         },
34         [1] = {
35                 .start  = IRQ_CNS3XXX_SATA,
36                 .end    = IRQ_CNS3XXX_SATA,
37                 .flags  = IORESOURCE_IRQ,
38         },
39 };
40
41 static u64 cns3xxx_ahci_dmamask = DMA_BIT_MASK(32);
42
43 static struct platform_device cns3xxx_ahci_pdev = {
44         .name           = "ahci",
45         .id             = 0,
46         .resource       = cns3xxx_ahci_resource,
47         .num_resources  = ARRAY_SIZE(cns3xxx_ahci_resource),
48         .dev            = {
49                 .dma_mask               = &cns3xxx_ahci_dmamask,
50                 .coherent_dma_mask      = DMA_BIT_MASK(32),
51         },
52 };
53
54 void __init cns3xxx_ahci_init(void)
55 {
56         u32 tmp;
57
58         tmp = __raw_readl(MISC_SATA_POWER_MODE);
59         tmp |= 0x1 << 16; /* Disable SATA PHY 0 from SLUMBER Mode */
60         tmp |= 0x1 << 17; /* Disable SATA PHY 1 from SLUMBER Mode */
61         __raw_writel(tmp, MISC_SATA_POWER_MODE);
62
63         /* Enable SATA PHY */
64         cns3xxx_pwr_power_up(0x1 << PM_PLL_HM_PD_CTRL_REG_OFFSET_SATA_PHY0);
65         cns3xxx_pwr_power_up(0x1 << PM_PLL_HM_PD_CTRL_REG_OFFSET_SATA_PHY1);
66
67         /* Enable SATA Clock */
68         cns3xxx_pwr_clk_en(0x1 << PM_CLK_GATE_REG_OFFSET_SATA);
69
70         /* De-Asscer SATA Reset */
71         cns3xxx_pwr_soft_rst(CNS3XXX_PWR_SOFTWARE_RST(SATA));
72
73         platform_device_register(&cns3xxx_ahci_pdev);
74 }
75
76 /*
77  * SDHCI
78  */
79 static struct resource cns3xxx_sdhci_resources[] = {
80         [0] = {
81                 .start = CNS3XXX_SDIO_BASE,
82                 .end   = CNS3XXX_SDIO_BASE + SZ_4K - 1,
83                 .flags = IORESOURCE_MEM,
84         },
85         [1] = {
86                 .start = IRQ_CNS3XXX_SDIO,
87                 .end   = IRQ_CNS3XXX_SDIO,
88                 .flags = IORESOURCE_IRQ,
89         },
90 };
91
92 static struct platform_device cns3xxx_sdhci_pdev = {
93         .name           = "sdhci-cns3xxx",
94         .id             = 0,
95         .num_resources  = ARRAY_SIZE(cns3xxx_sdhci_resources),
96         .resource       = cns3xxx_sdhci_resources,
97 };
98
99 void __init cns3xxx_sdhci_init(void)
100 {
101         u32 __iomem *gpioa = __io(CNS3XXX_MISC_BASE_VIRT + 0x0014);
102         u32 gpioa_pins = __raw_readl(gpioa);
103
104         /* MMC/SD pins share with GPIOA */
105         gpioa_pins |= 0x1fff0004;
106         __raw_writel(gpioa_pins, gpioa);
107
108         cns3xxx_pwr_clk_en(CNS3XXX_PWR_CLK_EN(SDIO));
109         cns3xxx_pwr_soft_rst(CNS3XXX_PWR_SOFTWARE_RST(SDIO));
110
111         platform_device_register(&cns3xxx_sdhci_pdev);
112 }