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Diffstat (limited to 'arch/arm/mach-s5p64x0/dev-spi.c')
-rw-r--r--arch/arm/mach-s5p64x0/dev-spi.c224
1 files changed, 0 insertions, 224 deletions
diff --git a/arch/arm/mach-s5p64x0/dev-spi.c b/arch/arm/mach-s5p64x0/dev-spi.c
deleted file mode 100644
index 1fd9c79c7dbc..000000000000
--- a/arch/arm/mach-s5p64x0/dev-spi.c
+++ /dev/null
@@ -1,224 +0,0 @@
1/* linux/arch/arm/mach-s5p64x0/dev-spi.c
2 *
3 * Copyright (c) 2010 Samsung Electronics Co., Ltd.
4 * http://www.samsung.com
5 *
6 * Copyright (C) 2010 Samsung Electronics Co. Ltd.
7 * Jaswinder Singh <jassi.brar@samsung.com>
8 *
9 * This program 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/platform_device.h>
15#include <linux/dma-mapping.h>
16#include <linux/gpio.h>
17
18#include <mach/dma.h>
19#include <mach/map.h>
20#include <mach/irqs.h>
21#include <mach/regs-clock.h>
22#include <mach/spi-clocks.h>
23
24#include <plat/cpu.h>
25#include <plat/s3c64xx-spi.h>
26#include <plat/gpio-cfg.h>
27
28static char *s5p64x0_spi_src_clks[] = {
29 [S5P64X0_SPI_SRCCLK_PCLK] = "pclk",
30 [S5P64X0_SPI_SRCCLK_SCLK] = "sclk_spi",
31};
32
33/* SPI Controller platform_devices */
34
35/* Since we emulate multi-cs capability, we do not touch the CS.
36 * The emulated CS is toggled by board specific mechanism, as it can
37 * be either some immediate GPIO or some signal out of some other
38 * chip in between ... or some yet another way.
39 * We simply do not assume anything about CS.
40 */
41static int s5p6440_spi_cfg_gpio(struct platform_device *pdev)
42{
43 unsigned int base;
44
45 switch (pdev->id) {
46 case 0:
47 base = S5P6440_GPC(0);
48 break;
49
50 case 1:
51 base = S5P6440_GPC(4);
52 break;
53
54 default:
55 dev_err(&pdev->dev, "Invalid SPI Controller number!");
56 return -EINVAL;
57 }
58
59 s3c_gpio_cfgall_range(base, 3,
60 S3C_GPIO_SFN(2), S3C_GPIO_PULL_UP);
61
62 return 0;
63}
64
65static int s5p6450_spi_cfg_gpio(struct platform_device *pdev)
66{
67 unsigned int base;
68
69 switch (pdev->id) {
70 case 0:
71 base = S5P6450_GPC(0);
72 break;
73
74 case 1:
75 base = S5P6450_GPC(4);
76 break;
77
78 default:
79 dev_err(&pdev->dev, "Invalid SPI Controller number!");
80 return -EINVAL;
81 }
82
83 s3c_gpio_cfgall_range(base, 3,
84 S3C_GPIO_SFN(2), S3C_GPIO_PULL_UP);
85
86 return 0;
87}
88
89static struct resource s5p64x0_spi0_resource[] = {
90 [0] = {
91 .start = S5P64X0_PA_SPI0,
92 .end = S5P64X0_PA_SPI0 + 0x100 - 1,
93 .flags = IORESOURCE_MEM,
94 },
95 [1] = {
96 .start = DMACH_SPI0_TX,
97 .end = DMACH_SPI0_TX,
98 .flags = IORESOURCE_DMA,
99 },
100 [2] = {
101 .start = DMACH_SPI0_RX,
102 .end = DMACH_SPI0_RX,
103 .flags = IORESOURCE_DMA,
104 },
105 [3] = {
106 .start = IRQ_SPI0,
107 .end = IRQ_SPI0,
108 .flags = IORESOURCE_IRQ,
109 },
110};
111
112static struct s3c64xx_spi_info s5p6440_spi0_pdata = {
113 .cfg_gpio = s5p6440_spi_cfg_gpio,
114 .fifo_lvl_mask = 0x1ff,
115 .rx_lvl_offset = 15,
116 .tx_st_done = 25,
117};
118
119static struct s3c64xx_spi_info s5p6450_spi0_pdata = {
120 .cfg_gpio = s5p6450_spi_cfg_gpio,
121 .fifo_lvl_mask = 0x1ff,
122 .rx_lvl_offset = 15,
123 .tx_st_done = 25,
124};
125
126static u64 spi_dmamask = DMA_BIT_MASK(32);
127
128struct platform_device s5p64x0_device_spi0 = {
129 .name = "s3c64xx-spi",
130 .id = 0,
131 .num_resources = ARRAY_SIZE(s5p64x0_spi0_resource),
132 .resource = s5p64x0_spi0_resource,
133 .dev = {
134 .dma_mask = &spi_dmamask,
135 .coherent_dma_mask = DMA_BIT_MASK(32),
136 },
137};
138
139static struct resource s5p64x0_spi1_resource[] = {
140 [0] = {
141 .start = S5P64X0_PA_SPI1,
142 .end = S5P64X0_PA_SPI1 + 0x100 - 1,
143 .flags = IORESOURCE_MEM,
144 },
145 [1] = {
146 .start = DMACH_SPI1_TX,
147 .end = DMACH_SPI1_TX,
148 .flags = IORESOURCE_DMA,
149 },
150 [2] = {
151 .start = DMACH_SPI1_RX,
152 .end = DMACH_SPI1_RX,
153 .flags = IORESOURCE_DMA,
154 },
155 [3] = {
156 .start = IRQ_SPI1,
157 .end = IRQ_SPI1,
158 .flags = IORESOURCE_IRQ,
159 },
160};
161
162static struct s3c64xx_spi_info s5p6440_spi1_pdata = {
163 .cfg_gpio = s5p6440_spi_cfg_gpio,
164 .fifo_lvl_mask = 0x7f,
165 .rx_lvl_offset = 15,
166 .tx_st_done = 25,
167};
168
169static struct s3c64xx_spi_info s5p6450_spi1_pdata = {
170 .cfg_gpio = s5p6450_spi_cfg_gpio,
171 .fifo_lvl_mask = 0x7f,
172 .rx_lvl_offset = 15,
173 .tx_st_done = 25,
174};
175
176struct platform_device s5p64x0_device_spi1 = {
177 .name = "s3c64xx-spi",
178 .id = 1,
179 .num_resources = ARRAY_SIZE(s5p64x0_spi1_resource),
180 .resource = s5p64x0_spi1_resource,
181 .dev = {
182 .dma_mask = &spi_dmamask,
183 .coherent_dma_mask = DMA_BIT_MASK(32),
184 },
185};
186
187void __init s5p64x0_spi_set_info(int cntrlr, int src_clk_nr, int num_cs)
188{
189 struct s3c64xx_spi_info *pd;
190
191 /* Reject invalid configuration */
192 if (!num_cs || src_clk_nr < 0
193 || src_clk_nr > S5P64X0_SPI_SRCCLK_SCLK) {
194 printk(KERN_ERR "%s: Invalid SPI configuration\n", __func__);
195 return;
196 }
197
198 switch (cntrlr) {
199 case 0:
200 if (soc_is_s5p6450())
201 pd = &s5p6450_spi0_pdata;
202 else
203 pd = &s5p6440_spi0_pdata;
204
205 s5p64x0_device_spi0.dev.platform_data = pd;
206 break;
207 case 1:
208 if (soc_is_s5p6450())
209 pd = &s5p6450_spi1_pdata;
210 else
211 pd = &s5p6440_spi1_pdata;
212
213 s5p64x0_device_spi1.dev.platform_data = pd;
214 break;
215 default:
216 printk(KERN_ERR "%s: Invalid SPI controller(%d)\n",
217 __func__, cntrlr);
218 return;
219 }
220
221 pd->num_cs = num_cs;
222 pd->src_clk_nr = src_clk_nr;
223 pd->src_clk_name = s5p64x0_spi_src_clks[src_clk_nr];
224}
generated by cgit v1.2.2 (git 2.25.0) at 2025-02-24 09:27:09 -0500