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eb7b797b BS |
1 | /* |
2 | * Copyright (c) 2008-2009 QUALCOMM Incorporated | |
3 | */ | |
4 | ||
5 | #include <linux/delay.h> | |
6 | #include <linux/clk.h> | |
7 | #include <linux/io.h> | |
8 | #include <mach/gpio.h> | |
9 | #include <mach/board.h> | |
10 | #include <mach/camera.h> | |
11 | ||
12 | #define CAMIF_CFG_RMSK 0x1fffff | |
13 | #define CAM_SEL_BMSK 0x2 | |
14 | #define CAM_PCLK_SRC_SEL_BMSK 0x60000 | |
15 | #define CAM_PCLK_INVERT_BMSK 0x80000 | |
16 | #define CAM_PAD_REG_SW_RESET_BMSK 0x100000 | |
17 | ||
18 | #define EXT_CAM_HSYNC_POL_SEL_BMSK 0x10000 | |
19 | #define EXT_CAM_VSYNC_POL_SEL_BMSK 0x8000 | |
20 | #define MDDI_CLK_CHICKEN_BIT_BMSK 0x80 | |
21 | ||
22 | #define CAM_SEL_SHFT 0x1 | |
23 | #define CAM_PCLK_SRC_SEL_SHFT 0x11 | |
24 | #define CAM_PCLK_INVERT_SHFT 0x13 | |
25 | #define CAM_PAD_REG_SW_RESET_SHFT 0x14 | |
26 | ||
27 | #define EXT_CAM_HSYNC_POL_SEL_SHFT 0x10 | |
28 | #define EXT_CAM_VSYNC_POL_SEL_SHFT 0xF | |
29 | #define MDDI_CLK_CHICKEN_BIT_SHFT 0x7 | |
30 | #define APPS_RESET_OFFSET 0x00000210 | |
31 | ||
32 | static struct clk *camio_vfe_mdc_clk; | |
33 | static struct clk *camio_mdc_clk; | |
34 | static struct clk *camio_vfe_clk; | |
35 | static struct clk *camio_vfe_axi_clk; | |
36 | static struct msm_camera_io_ext camio_ext; | |
37 | static struct resource *appio, *mdcio; | |
38 | void __iomem *appbase, *mdcbase; | |
39 | ||
40 | extern int clk_set_flags(struct clk *clk, unsigned long flags); | |
41 | ||
42 | int msm_camio_clk_enable(enum msm_camio_clk_type clktype) | |
43 | { | |
44 | int rc = 0; | |
45 | struct clk *clk = NULL; | |
46 | ||
47 | switch (clktype) { | |
48 | case CAMIO_VFE_MDC_CLK: | |
49 | camio_vfe_mdc_clk = | |
50 | clk = clk_get(NULL, "vfe_mdc_clk"); | |
51 | break; | |
52 | ||
53 | case CAMIO_MDC_CLK: | |
54 | camio_mdc_clk = | |
55 | clk = clk_get(NULL, "mdc_clk"); | |
56 | break; | |
57 | ||
58 | case CAMIO_VFE_CLK: | |
59 | camio_vfe_clk = | |
60 | clk = clk_get(NULL, "vfe_clk"); | |
61 | break; | |
62 | ||
63 | case CAMIO_VFE_AXI_CLK: | |
64 | camio_vfe_axi_clk = | |
65 | clk = clk_get(NULL, "vfe_axi_clk"); | |
66 | break; | |
67 | ||
68 | default: | |
69 | break; | |
70 | } | |
71 | ||
72 | if (!IS_ERR(clk)) | |
73 | clk_enable(clk); | |
74 | else | |
75 | rc = -1; | |
76 | ||
77 | return rc; | |
78 | } | |
79 | ||
80 | int msm_camio_clk_disable(enum msm_camio_clk_type clktype) | |
81 | { | |
82 | int rc = 0; | |
83 | struct clk *clk = NULL; | |
84 | ||
85 | switch (clktype) { | |
86 | case CAMIO_VFE_MDC_CLK: | |
87 | clk = camio_vfe_mdc_clk; | |
88 | break; | |
89 | ||
90 | case CAMIO_MDC_CLK: | |
91 | clk = camio_mdc_clk; | |
92 | break; | |
93 | ||
94 | case CAMIO_VFE_CLK: | |
95 | clk = camio_vfe_clk; | |
96 | break; | |
97 | ||
98 | case CAMIO_VFE_AXI_CLK: | |
99 | clk = camio_vfe_axi_clk; | |
100 | break; | |
101 | ||
102 | default: | |
103 | break; | |
104 | } | |
105 | ||
106 | if (!IS_ERR(clk)) { | |
107 | clk_disable(clk); | |
108 | clk_put(clk); | |
109 | } else | |
110 | rc = -1; | |
111 | ||
112 | return rc; | |
113 | } | |
114 | ||
115 | void msm_camio_clk_rate_set(int rate) | |
116 | { | |
117 | struct clk *clk = camio_vfe_mdc_clk; | |
118 | ||
119 | /* TODO: check return */ | |
120 | clk_set_rate(clk, rate); | |
121 | } | |
122 | ||
123 | int msm_camio_enable(struct platform_device *pdev) | |
124 | { | |
125 | int rc = 0; | |
126 | struct msm_camera_sensor_info *sinfo = pdev->dev.platform_data; | |
127 | struct msm_camera_device_platform_data *camdev = sinfo->pdata; | |
128 | ||
129 | camio_ext = camdev->ioext; | |
130 | ||
131 | appio = request_mem_region(camio_ext.appphy, | |
132 | camio_ext.appsz, pdev->name); | |
133 | if (!appio) { | |
134 | rc = -EBUSY; | |
135 | goto enable_fail; | |
136 | } | |
137 | ||
138 | appbase = ioremap(camio_ext.appphy, | |
139 | camio_ext.appsz); | |
140 | if (!appbase) { | |
141 | rc = -ENOMEM; | |
142 | goto apps_no_mem; | |
143 | } | |
144 | ||
145 | mdcio = request_mem_region(camio_ext.mdcphy, | |
146 | camio_ext.mdcsz, pdev->name); | |
147 | if (!mdcio) { | |
148 | rc = -EBUSY; | |
149 | goto mdc_busy; | |
150 | } | |
151 | ||
152 | mdcbase = ioremap(camio_ext.mdcphy, | |
153 | camio_ext.mdcsz); | |
154 | if (!mdcbase) { | |
155 | rc = -ENOMEM; | |
156 | goto mdc_no_mem; | |
157 | } | |
158 | ||
159 | camdev->camera_gpio_on(); | |
160 | ||
161 | msm_camio_clk_enable(CAMIO_VFE_CLK); | |
162 | msm_camio_clk_enable(CAMIO_MDC_CLK); | |
163 | msm_camio_clk_enable(CAMIO_VFE_MDC_CLK); | |
164 | msm_camio_clk_enable(CAMIO_VFE_AXI_CLK); | |
165 | return 0; | |
166 | ||
167 | mdc_no_mem: | |
168 | release_mem_region(camio_ext.mdcphy, camio_ext.mdcsz); | |
169 | mdc_busy: | |
170 | iounmap(appbase); | |
171 | apps_no_mem: | |
172 | release_mem_region(camio_ext.appphy, camio_ext.appsz); | |
173 | enable_fail: | |
174 | return rc; | |
175 | } | |
176 | ||
177 | void msm_camio_disable(struct platform_device *pdev) | |
178 | { | |
179 | struct msm_camera_sensor_info *sinfo = pdev->dev.platform_data; | |
180 | struct msm_camera_device_platform_data *camdev = sinfo->pdata; | |
181 | ||
182 | iounmap(mdcbase); | |
183 | release_mem_region(camio_ext.mdcphy, camio_ext.mdcsz); | |
184 | iounmap(appbase); | |
185 | release_mem_region(camio_ext.appphy, camio_ext.appsz); | |
186 | ||
187 | camdev->camera_gpio_off(); | |
188 | ||
189 | msm_camio_clk_disable(CAMIO_VFE_MDC_CLK); | |
190 | msm_camio_clk_disable(CAMIO_MDC_CLK); | |
191 | msm_camio_clk_disable(CAMIO_VFE_CLK); | |
192 | msm_camio_clk_disable(CAMIO_VFE_AXI_CLK); | |
193 | } | |
194 | ||
195 | void msm_camio_camif_pad_reg_reset(void) | |
196 | { | |
197 | uint32_t reg; | |
198 | uint32_t mask, value; | |
199 | ||
200 | /* select CLKRGM_VFE_SRC_CAM_VFE_SRC: internal source */ | |
201 | msm_camio_clk_sel(MSM_CAMIO_CLK_SRC_INTERNAL); | |
202 | ||
203 | reg = (readl(mdcbase)) & CAMIF_CFG_RMSK; | |
204 | ||
205 | mask = CAM_SEL_BMSK | | |
206 | CAM_PCLK_SRC_SEL_BMSK | | |
207 | CAM_PCLK_INVERT_BMSK | | |
208 | EXT_CAM_HSYNC_POL_SEL_BMSK | | |
209 | EXT_CAM_VSYNC_POL_SEL_BMSK | | |
210 | MDDI_CLK_CHICKEN_BIT_BMSK; | |
211 | ||
212 | value = 1 << CAM_SEL_SHFT | | |
213 | 3 << CAM_PCLK_SRC_SEL_SHFT | | |
214 | 0 << CAM_PCLK_INVERT_SHFT | | |
215 | 0 << EXT_CAM_HSYNC_POL_SEL_SHFT | | |
216 | 0 << EXT_CAM_VSYNC_POL_SEL_SHFT | | |
217 | 0 << MDDI_CLK_CHICKEN_BIT_SHFT; | |
218 | writel((reg & (~mask)) | (value & mask), mdcbase); | |
219 | mdelay(10); | |
220 | ||
221 | reg = (readl(mdcbase)) & CAMIF_CFG_RMSK; | |
222 | mask = CAM_PAD_REG_SW_RESET_BMSK; | |
223 | value = 1 << CAM_PAD_REG_SW_RESET_SHFT; | |
224 | writel((reg & (~mask)) | (value & mask), mdcbase); | |
225 | mdelay(10); | |
226 | ||
227 | reg = (readl(mdcbase)) & CAMIF_CFG_RMSK; | |
228 | mask = CAM_PAD_REG_SW_RESET_BMSK; | |
229 | value = 0 << CAM_PAD_REG_SW_RESET_SHFT; | |
230 | writel((reg & (~mask)) | (value & mask), mdcbase); | |
231 | mdelay(10); | |
232 | ||
233 | msm_camio_clk_sel(MSM_CAMIO_CLK_SRC_EXTERNAL); | |
234 | ||
235 | mdelay(10); | |
236 | ||
237 | /* todo: check return */ | |
238 | if (camio_vfe_clk) | |
239 | clk_set_rate(camio_vfe_clk, 96000000); | |
240 | } | |
241 | ||
242 | void msm_camio_vfe_blk_reset(void) | |
243 | { | |
244 | uint32_t val; | |
245 | ||
246 | val = readl(appbase + 0x00000210); | |
247 | val |= 0x1; | |
248 | writel(val, appbase + 0x00000210); | |
249 | mdelay(10); | |
250 | ||
251 | val = readl(appbase + 0x00000210); | |
252 | val &= ~0x1; | |
253 | writel(val, appbase + 0x00000210); | |
254 | mdelay(10); | |
255 | } | |
256 | ||
257 | void msm_camio_camif_pad_reg_reset_2(void) | |
258 | { | |
259 | uint32_t reg; | |
260 | uint32_t mask, value; | |
261 | ||
262 | reg = (readl(mdcbase)) & CAMIF_CFG_RMSK; | |
263 | mask = CAM_PAD_REG_SW_RESET_BMSK; | |
264 | value = 1 << CAM_PAD_REG_SW_RESET_SHFT; | |
265 | writel((reg & (~mask)) | (value & mask), mdcbase); | |
266 | mdelay(10); | |
267 | ||
268 | reg = (readl(mdcbase)) & CAMIF_CFG_RMSK; | |
269 | mask = CAM_PAD_REG_SW_RESET_BMSK; | |
270 | value = 0 << CAM_PAD_REG_SW_RESET_SHFT; | |
271 | writel((reg & (~mask)) | (value & mask), mdcbase); | |
272 | mdelay(10); | |
273 | } | |
274 | ||
275 | void msm_camio_clk_sel(enum msm_camio_clk_src_type srctype) | |
276 | { | |
277 | struct clk *clk = NULL; | |
278 | ||
279 | clk = camio_vfe_clk; | |
280 | ||
281 | if (clk != NULL) { | |
282 | switch (srctype) { | |
283 | case MSM_CAMIO_CLK_SRC_INTERNAL: | |
284 | clk_set_flags(clk, 0x00000100 << 1); | |
285 | break; | |
286 | ||
287 | case MSM_CAMIO_CLK_SRC_EXTERNAL: | |
288 | clk_set_flags(clk, 0x00000100); | |
289 | break; | |
290 | ||
291 | default: | |
292 | break; | |
293 | } | |
294 | } | |
295 | } | |
296 | ||
297 | void msm_camio_clk_axi_rate_set(int rate) | |
298 | { | |
299 | struct clk *clk = camio_vfe_axi_clk; | |
300 | /* todo: check return */ | |
301 | clk_set_rate(clk, rate); | |
302 | } | |
303 | ||
304 | int msm_camio_probe_on(struct platform_device *pdev) | |
305 | { | |
306 | struct msm_camera_sensor_info *sinfo = pdev->dev.platform_data; | |
307 | struct msm_camera_device_platform_data *camdev = sinfo->pdata; | |
308 | ||
309 | camdev->camera_gpio_on(); | |
310 | return msm_camio_clk_enable(CAMIO_VFE_MDC_CLK); | |
311 | } | |
312 | ||
313 | int msm_camio_probe_off(struct platform_device *pdev) | |
314 | { | |
315 | struct msm_camera_sensor_info *sinfo = pdev->dev.platform_data; | |
316 | struct msm_camera_device_platform_data *camdev = sinfo->pdata; | |
317 | ||
318 | camdev->camera_gpio_off(); | |
319 | return msm_camio_clk_disable(CAMIO_VFE_MDC_CLK); | |
320 | } |