diff options
Diffstat (limited to 'arch/arm/mach-s5p6442/dev-spi.c')
-rw-r--r-- | arch/arm/mach-s5p6442/dev-spi.c | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/arch/arm/mach-s5p6442/dev-spi.c b/arch/arm/mach-s5p6442/dev-spi.c deleted file mode 100644 index cce8c2470709..000000000000 --- a/arch/arm/mach-s5p6442/dev-spi.c +++ /dev/null | |||
@@ -1,121 +0,0 @@ | |||
1 | /* linux/arch/arm/mach-s5p6442/dev-spi.c | ||
2 | * | ||
3 | * Copyright (C) 2010 Samsung Electronics Co. Ltd. | ||
4 | * Jaswinder Singh <jassi.brar@samsung.com> | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or modify | ||
7 | * it under the terms of the GNU General Public License version 2 as | ||
8 | * published by the Free Software Foundation. | ||
9 | */ | ||
10 | |||
11 | #include <linux/platform_device.h> | ||
12 | #include <linux/dma-mapping.h> | ||
13 | #include <linux/gpio.h> | ||
14 | |||
15 | #include <mach/dma.h> | ||
16 | #include <mach/map.h> | ||
17 | #include <mach/irqs.h> | ||
18 | #include <mach/spi-clocks.h> | ||
19 | |||
20 | #include <plat/s3c64xx-spi.h> | ||
21 | #include <plat/gpio-cfg.h> | ||
22 | |||
23 | static char *spi_src_clks[] = { | ||
24 | [S5P6442_SPI_SRCCLK_PCLK] = "pclk", | ||
25 | [S5P6442_SPI_SRCCLK_SCLK] = "spi_epll", | ||
26 | }; | ||
27 | |||
28 | /* SPI Controller platform_devices */ | ||
29 | |||
30 | /* Since we emulate multi-cs capability, we do not touch the CS. | ||
31 | * The emulated CS is toggled by board specific mechanism, as it can | ||
32 | * be either some immediate GPIO or some signal out of some other | ||
33 | * chip in between ... or some yet another way. | ||
34 | * We simply do not assume anything about CS. | ||
35 | */ | ||
36 | static int s5p6442_spi_cfg_gpio(struct platform_device *pdev) | ||
37 | { | ||
38 | switch (pdev->id) { | ||
39 | case 0: | ||
40 | s3c_gpio_cfgpin(S5P6442_GPB(0), S3C_GPIO_SFN(2)); | ||
41 | s3c_gpio_setpull(S5P6442_GPB(0), S3C_GPIO_PULL_UP); | ||
42 | s3c_gpio_cfgall_range(S5P6442_GPB(2), 2, | ||
43 | S3C_GPIO_SFN(2), S3C_GPIO_PULL_UP); | ||
44 | break; | ||
45 | |||
46 | default: | ||
47 | dev_err(&pdev->dev, "Invalid SPI Controller number!"); | ||
48 | return -EINVAL; | ||
49 | } | ||
50 | |||
51 | return 0; | ||
52 | } | ||
53 | |||
54 | static struct resource s5p6442_spi0_resource[] = { | ||
55 | [0] = { | ||
56 | .start = S5P6442_PA_SPI, | ||
57 | .end = S5P6442_PA_SPI + 0x100 - 1, | ||
58 | .flags = IORESOURCE_MEM, | ||
59 | }, | ||
60 | [1] = { | ||
61 | .start = DMACH_SPI0_TX, | ||
62 | .end = DMACH_SPI0_TX, | ||
63 | .flags = IORESOURCE_DMA, | ||
64 | }, | ||
65 | [2] = { | ||
66 | .start = DMACH_SPI0_RX, | ||
67 | .end = DMACH_SPI0_RX, | ||
68 | .flags = IORESOURCE_DMA, | ||
69 | }, | ||
70 | [3] = { | ||
71 | .start = IRQ_SPI0, | ||
72 | .end = IRQ_SPI0, | ||
73 | .flags = IORESOURCE_IRQ, | ||
74 | }, | ||
75 | }; | ||
76 | |||
77 | static struct s3c64xx_spi_info s5p6442_spi0_pdata = { | ||
78 | .cfg_gpio = s5p6442_spi_cfg_gpio, | ||
79 | .fifo_lvl_mask = 0x1ff, | ||
80 | .rx_lvl_offset = 15, | ||
81 | }; | ||
82 | |||
83 | static u64 spi_dmamask = DMA_BIT_MASK(32); | ||
84 | |||
85 | struct platform_device s5p6442_device_spi = { | ||
86 | .name = "s3c64xx-spi", | ||
87 | .id = 0, | ||
88 | .num_resources = ARRAY_SIZE(s5p6442_spi0_resource), | ||
89 | .resource = s5p6442_spi0_resource, | ||
90 | .dev = { | ||
91 | .dma_mask = &spi_dmamask, | ||
92 | .coherent_dma_mask = DMA_BIT_MASK(32), | ||
93 | .platform_data = &s5p6442_spi0_pdata, | ||
94 | }, | ||
95 | }; | ||
96 | |||
97 | void __init s5p6442_spi_set_info(int cntrlr, int src_clk_nr, int num_cs) | ||
98 | { | ||
99 | struct s3c64xx_spi_info *pd; | ||
100 | |||
101 | /* Reject invalid configuration */ | ||
102 | if (!num_cs || src_clk_nr < 0 | ||
103 | || src_clk_nr > S5P6442_SPI_SRCCLK_SCLK) { | ||
104 | printk(KERN_ERR "%s: Invalid SPI configuration\n", __func__); | ||
105 | return; | ||
106 | } | ||
107 | |||
108 | switch (cntrlr) { | ||
109 | case 0: | ||
110 | pd = &s5p6442_spi0_pdata; | ||
111 | break; | ||
112 | default: | ||
113 | printk(KERN_ERR "%s: Invalid SPI controller(%d)\n", | ||
114 | __func__, cntrlr); | ||
115 | return; | ||
116 | } | ||
117 | |||
118 | pd->num_cs = num_cs; | ||
119 | pd->src_clk_nr = src_clk_nr; | ||
120 | pd->src_clk_name = spi_src_clks[src_clk_nr]; | ||
121 | } | ||