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448de7e7 SA |
1 | /* |
2 | * isp.c | |
3 | * | |
4 | * TI OMAP3 ISP - Core | |
5 | * | |
6 | * Copyright (C) 2006-2010 Nokia Corporation | |
7 | * Copyright (C) 2007-2009 Texas Instruments, Inc. | |
8 | * | |
9 | * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com> | |
10 | * Sakari Ailus <sakari.ailus@iki.fi> | |
11 | * | |
12 | * Contributors: | |
13 | * Laurent Pinchart <laurent.pinchart@ideasonboard.com> | |
14 | * Sakari Ailus <sakari.ailus@iki.fi> | |
15 | * David Cohen <dacohen@gmail.com> | |
16 | * Stanimir Varbanov <svarbanov@mm-sol.com> | |
17 | * Vimarsh Zutshi <vimarsh.zutshi@gmail.com> | |
18 | * Tuukka Toivonen <tuukkat76@gmail.com> | |
19 | * Sergio Aguirre <saaguirre@ti.com> | |
20 | * Antti Koskipaa <akoskipa@gmail.com> | |
21 | * Ivan T. Ivanov <iivanov@mm-sol.com> | |
22 | * RaniSuneela <r-m@ti.com> | |
23 | * Atanas Filipov <afilipov@mm-sol.com> | |
24 | * Gjorgji Rosikopulos <grosikopulos@mm-sol.com> | |
25 | * Hiroshi DOYU <hiroshi.doyu@nokia.com> | |
26 | * Nayden Kanchev <nkanchev@mm-sol.com> | |
27 | * Phil Carmody <ext-phil.2.carmody@nokia.com> | |
28 | * Artem Bityutskiy <artem.bityutskiy@nokia.com> | |
29 | * Dominic Curran <dcurran@ti.com> | |
30 | * Ilkka Myllyperkio <ilkka.myllyperkio@sofica.fi> | |
31 | * Pallavi Kulkarni <p-kulkarni@ti.com> | |
32 | * Vaibhav Hiremath <hvaibhav@ti.com> | |
33 | * Mohit Jalori <mjalori@ti.com> | |
34 | * Sameer Venkatraman <sameerv@ti.com> | |
35 | * Senthilvadivu Guruswamy <svadivu@ti.com> | |
36 | * Thara Gopinath <thara@ti.com> | |
37 | * Toni Leinonen <toni.leinonen@nokia.com> | |
38 | * Troy Laramy <t-laramy@ti.com> | |
39 | * | |
40 | * This program is free software; you can redistribute it and/or modify | |
41 | * it under the terms of the GNU General Public License version 2 as | |
42 | * published by the Free Software Foundation. | |
43 | * | |
44 | * This program is distributed in the hope that it will be useful, but | |
45 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
46 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
47 | * General Public License for more details. | |
48 | * | |
49 | * You should have received a copy of the GNU General Public License | |
50 | * along with this program; if not, write to the Free Software | |
51 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | |
52 | * 02110-1301 USA | |
53 | */ | |
54 | ||
55 | #include <asm/cacheflush.h> | |
56 | ||
57 | #include <linux/clk.h> | |
58 | #include <linux/delay.h> | |
59 | #include <linux/device.h> | |
60 | #include <linux/dma-mapping.h> | |
61 | #include <linux/i2c.h> | |
62 | #include <linux/interrupt.h> | |
63 | #include <linux/module.h> | |
64 | #include <linux/platform_device.h> | |
65 | #include <linux/regulator/consumer.h> | |
66 | #include <linux/slab.h> | |
67 | #include <linux/sched.h> | |
68 | #include <linux/vmalloc.h> | |
69 | ||
70 | #include <media/v4l2-common.h> | |
71 | #include <media/v4l2-device.h> | |
72 | ||
73 | #include "isp.h" | |
74 | #include "ispreg.h" | |
75 | #include "ispccdc.h" | |
76 | #include "isppreview.h" | |
77 | #include "ispresizer.h" | |
78 | #include "ispcsi2.h" | |
79 | #include "ispccp2.h" | |
80 | #include "isph3a.h" | |
81 | #include "isphist.h" | |
82 | ||
83 | static unsigned int autoidle; | |
84 | module_param(autoidle, int, 0444); | |
85 | MODULE_PARM_DESC(autoidle, "Enable OMAP3ISP AUTOIDLE support"); | |
86 | ||
87 | static void isp_save_ctx(struct isp_device *isp); | |
88 | ||
89 | static void isp_restore_ctx(struct isp_device *isp); | |
90 | ||
91 | static const struct isp_res_mapping isp_res_maps[] = { | |
92 | { | |
93 | .isp_rev = ISP_REVISION_2_0, | |
94 | .map = 1 << OMAP3_ISP_IOMEM_MAIN | | |
95 | 1 << OMAP3_ISP_IOMEM_CCP2 | | |
96 | 1 << OMAP3_ISP_IOMEM_CCDC | | |
97 | 1 << OMAP3_ISP_IOMEM_HIST | | |
98 | 1 << OMAP3_ISP_IOMEM_H3A | | |
99 | 1 << OMAP3_ISP_IOMEM_PREV | | |
100 | 1 << OMAP3_ISP_IOMEM_RESZ | | |
101 | 1 << OMAP3_ISP_IOMEM_SBL | | |
102 | 1 << OMAP3_ISP_IOMEM_CSI2A_REGS1 | | |
103 | 1 << OMAP3_ISP_IOMEM_CSIPHY2, | |
104 | }, | |
105 | { | |
106 | .isp_rev = ISP_REVISION_15_0, | |
107 | .map = 1 << OMAP3_ISP_IOMEM_MAIN | | |
108 | 1 << OMAP3_ISP_IOMEM_CCP2 | | |
109 | 1 << OMAP3_ISP_IOMEM_CCDC | | |
110 | 1 << OMAP3_ISP_IOMEM_HIST | | |
111 | 1 << OMAP3_ISP_IOMEM_H3A | | |
112 | 1 << OMAP3_ISP_IOMEM_PREV | | |
113 | 1 << OMAP3_ISP_IOMEM_RESZ | | |
114 | 1 << OMAP3_ISP_IOMEM_SBL | | |
115 | 1 << OMAP3_ISP_IOMEM_CSI2A_REGS1 | | |
116 | 1 << OMAP3_ISP_IOMEM_CSIPHY2 | | |
117 | 1 << OMAP3_ISP_IOMEM_CSI2A_REGS2 | | |
118 | 1 << OMAP3_ISP_IOMEM_CSI2C_REGS1 | | |
119 | 1 << OMAP3_ISP_IOMEM_CSIPHY1 | | |
120 | 1 << OMAP3_ISP_IOMEM_CSI2C_REGS2, | |
121 | }, | |
122 | }; | |
123 | ||
124 | /* Structure for saving/restoring ISP module registers */ | |
125 | static struct isp_reg isp_reg_list[] = { | |
126 | {OMAP3_ISP_IOMEM_MAIN, ISP_SYSCONFIG, 0}, | |
127 | {OMAP3_ISP_IOMEM_MAIN, ISP_CTRL, 0}, | |
128 | {OMAP3_ISP_IOMEM_MAIN, ISP_TCTRL_CTRL, 0}, | |
129 | {0, ISP_TOK_TERM, 0} | |
130 | }; | |
131 | ||
132 | /* | |
133 | * omap3isp_flush - Post pending L3 bus writes by doing a register readback | |
134 | * @isp: OMAP3 ISP device | |
135 | * | |
136 | * In order to force posting of pending writes, we need to write and | |
137 | * readback the same register, in this case the revision register. | |
138 | * | |
139 | * See this link for reference: | |
140 | * http://www.mail-archive.com/linux-omap@vger.kernel.org/msg08149.html | |
141 | */ | |
142 | void omap3isp_flush(struct isp_device *isp) | |
143 | { | |
144 | isp_reg_writel(isp, 0, OMAP3_ISP_IOMEM_MAIN, ISP_REVISION); | |
145 | isp_reg_readl(isp, OMAP3_ISP_IOMEM_MAIN, ISP_REVISION); | |
146 | } | |
147 | ||
148 | /* | |
149 | * isp_enable_interrupts - Enable ISP interrupts. | |
150 | * @isp: OMAP3 ISP device | |
151 | */ | |
152 | static void isp_enable_interrupts(struct isp_device *isp) | |
153 | { | |
154 | static const u32 irq = IRQ0ENABLE_CSIA_IRQ | |
155 | | IRQ0ENABLE_CSIB_IRQ | |
156 | | IRQ0ENABLE_CCDC_LSC_PREF_ERR_IRQ | |
157 | | IRQ0ENABLE_CCDC_LSC_DONE_IRQ | |
158 | | IRQ0ENABLE_CCDC_VD0_IRQ | |
159 | | IRQ0ENABLE_CCDC_VD1_IRQ | |
160 | | IRQ0ENABLE_HS_VS_IRQ | |
161 | | IRQ0ENABLE_HIST_DONE_IRQ | |
162 | | IRQ0ENABLE_H3A_AWB_DONE_IRQ | |
163 | | IRQ0ENABLE_H3A_AF_DONE_IRQ | |
164 | | IRQ0ENABLE_PRV_DONE_IRQ | |
165 | | IRQ0ENABLE_RSZ_DONE_IRQ; | |
166 | ||
167 | isp_reg_writel(isp, irq, OMAP3_ISP_IOMEM_MAIN, ISP_IRQ0STATUS); | |
168 | isp_reg_writel(isp, irq, OMAP3_ISP_IOMEM_MAIN, ISP_IRQ0ENABLE); | |
169 | } | |
170 | ||
171 | /* | |
172 | * isp_disable_interrupts - Disable ISP interrupts. | |
173 | * @isp: OMAP3 ISP device | |
174 | */ | |
175 | static void isp_disable_interrupts(struct isp_device *isp) | |
176 | { | |
177 | isp_reg_writel(isp, 0, OMAP3_ISP_IOMEM_MAIN, ISP_IRQ0ENABLE); | |
178 | } | |
179 | ||
180 | /** | |
181 | * isp_set_xclk - Configures the specified cam_xclk to the desired frequency. | |
182 | * @isp: OMAP3 ISP device | |
183 | * @xclk: Desired frequency of the clock in Hz. 0 = stable low, 1 is stable high | |
184 | * @xclksel: XCLK to configure (0 = A, 1 = B). | |
185 | * | |
186 | * Configures the specified MCLK divisor in the ISP timing control register | |
187 | * (TCTRL_CTRL) to generate the desired xclk clock value. | |
188 | * | |
189 | * Divisor = cam_mclk_hz / xclk | |
190 | * | |
191 | * Returns the final frequency that is actually being generated | |
192 | **/ | |
193 | static u32 isp_set_xclk(struct isp_device *isp, u32 xclk, u8 xclksel) | |
194 | { | |
195 | u32 divisor; | |
196 | u32 currentxclk; | |
197 | unsigned long mclk_hz; | |
198 | ||
199 | if (!omap3isp_get(isp)) | |
200 | return 0; | |
201 | ||
202 | mclk_hz = clk_get_rate(isp->clock[ISP_CLK_CAM_MCLK]); | |
203 | ||
204 | if (xclk >= mclk_hz) { | |
205 | divisor = ISPTCTRL_CTRL_DIV_BYPASS; | |
206 | currentxclk = mclk_hz; | |
207 | } else if (xclk >= 2) { | |
208 | divisor = mclk_hz / xclk; | |
209 | if (divisor >= ISPTCTRL_CTRL_DIV_BYPASS) | |
210 | divisor = ISPTCTRL_CTRL_DIV_BYPASS - 1; | |
211 | currentxclk = mclk_hz / divisor; | |
212 | } else { | |
213 | divisor = xclk; | |
214 | currentxclk = 0; | |
215 | } | |
216 | ||
217 | switch (xclksel) { | |
7c2c8f42 | 218 | case ISP_XCLK_A: |
448de7e7 SA |
219 | isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_MAIN, ISP_TCTRL_CTRL, |
220 | ISPTCTRL_CTRL_DIVA_MASK, | |
221 | divisor << ISPTCTRL_CTRL_DIVA_SHIFT); | |
222 | dev_dbg(isp->dev, "isp_set_xclk(): cam_xclka set to %d Hz\n", | |
223 | currentxclk); | |
224 | break; | |
7c2c8f42 | 225 | case ISP_XCLK_B: |
448de7e7 SA |
226 | isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_MAIN, ISP_TCTRL_CTRL, |
227 | ISPTCTRL_CTRL_DIVB_MASK, | |
228 | divisor << ISPTCTRL_CTRL_DIVB_SHIFT); | |
229 | dev_dbg(isp->dev, "isp_set_xclk(): cam_xclkb set to %d Hz\n", | |
230 | currentxclk); | |
231 | break; | |
7c2c8f42 | 232 | case ISP_XCLK_NONE: |
448de7e7 SA |
233 | default: |
234 | omap3isp_put(isp); | |
235 | dev_dbg(isp->dev, "ISP_ERR: isp_set_xclk(): Invalid requested " | |
236 | "xclk. Must be 0 (A) or 1 (B).\n"); | |
237 | return -EINVAL; | |
238 | } | |
239 | ||
240 | /* Do we go from stable whatever to clock? */ | |
7c2c8f42 | 241 | if (divisor >= 2 && isp->xclk_divisor[xclksel - 1] < 2) |
448de7e7 SA |
242 | omap3isp_get(isp); |
243 | /* Stopping the clock. */ | |
7c2c8f42 | 244 | else if (divisor < 2 && isp->xclk_divisor[xclksel - 1] >= 2) |
448de7e7 SA |
245 | omap3isp_put(isp); |
246 | ||
7c2c8f42 | 247 | isp->xclk_divisor[xclksel - 1] = divisor; |
448de7e7 SA |
248 | |
249 | omap3isp_put(isp); | |
250 | ||
251 | return currentxclk; | |
252 | } | |
253 | ||
254 | /* | |
255 | * isp_power_settings - Sysconfig settings, for Power Management. | |
256 | * @isp: OMAP3 ISP device | |
257 | * @idle: Consider idle state. | |
258 | * | |
259 | * Sets the power settings for the ISP, and SBL bus. | |
260 | */ | |
261 | static void isp_power_settings(struct isp_device *isp, int idle) | |
262 | { | |
263 | isp_reg_writel(isp, | |
264 | ((idle ? ISP_SYSCONFIG_MIDLEMODE_SMARTSTANDBY : | |
265 | ISP_SYSCONFIG_MIDLEMODE_FORCESTANDBY) << | |
266 | ISP_SYSCONFIG_MIDLEMODE_SHIFT) | | |
267 | ((isp->revision == ISP_REVISION_15_0) ? | |
268 | ISP_SYSCONFIG_AUTOIDLE : 0), | |
269 | OMAP3_ISP_IOMEM_MAIN, ISP_SYSCONFIG); | |
270 | ||
271 | if (isp->autoidle) | |
272 | isp_reg_writel(isp, ISPCTRL_SBL_AUTOIDLE, OMAP3_ISP_IOMEM_MAIN, | |
273 | ISP_CTRL); | |
274 | } | |
275 | ||
276 | /* | |
277 | * Configure the bridge and lane shifter. Valid inputs are | |
278 | * | |
279 | * CCDC_INPUT_PARALLEL: Parallel interface | |
280 | * CCDC_INPUT_CSI2A: CSI2a receiver | |
281 | * CCDC_INPUT_CCP2B: CCP2b receiver | |
282 | * CCDC_INPUT_CSI2C: CSI2c receiver | |
283 | * | |
284 | * The bridge and lane shifter are configured according to the selected input | |
285 | * and the ISP platform data. | |
286 | */ | |
287 | void omap3isp_configure_bridge(struct isp_device *isp, | |
288 | enum ccdc_input_entity input, | |
c09af044 MJ |
289 | const struct isp_parallel_platform_data *pdata, |
290 | unsigned int shift) | |
448de7e7 SA |
291 | { |
292 | u32 ispctrl_val; | |
293 | ||
294 | ispctrl_val = isp_reg_readl(isp, OMAP3_ISP_IOMEM_MAIN, ISP_CTRL); | |
295 | ispctrl_val &= ~ISPCTRL_SHIFT_MASK; | |
296 | ispctrl_val &= ~ISPCTRL_PAR_CLK_POL_INV; | |
297 | ispctrl_val &= ~ISPCTRL_PAR_SER_CLK_SEL_MASK; | |
298 | ispctrl_val &= ~ISPCTRL_PAR_BRIDGE_MASK; | |
299 | ||
300 | switch (input) { | |
301 | case CCDC_INPUT_PARALLEL: | |
302 | ispctrl_val |= ISPCTRL_PAR_SER_CLK_SEL_PARALLEL; | |
448de7e7 SA |
303 | ispctrl_val |= pdata->clk_pol << ISPCTRL_PAR_CLK_POL_SHIFT; |
304 | ispctrl_val |= pdata->bridge << ISPCTRL_PAR_BRIDGE_SHIFT; | |
c09af044 | 305 | shift += pdata->data_lane_shift * 2; |
448de7e7 SA |
306 | break; |
307 | ||
308 | case CCDC_INPUT_CSI2A: | |
309 | ispctrl_val |= ISPCTRL_PAR_SER_CLK_SEL_CSIA; | |
310 | break; | |
311 | ||
312 | case CCDC_INPUT_CCP2B: | |
313 | ispctrl_val |= ISPCTRL_PAR_SER_CLK_SEL_CSIB; | |
314 | break; | |
315 | ||
316 | case CCDC_INPUT_CSI2C: | |
317 | ispctrl_val |= ISPCTRL_PAR_SER_CLK_SEL_CSIC; | |
318 | break; | |
319 | ||
320 | default: | |
321 | return; | |
322 | } | |
323 | ||
c09af044 MJ |
324 | ispctrl_val |= ((shift/2) << ISPCTRL_SHIFT_SHIFT) & ISPCTRL_SHIFT_MASK; |
325 | ||
448de7e7 SA |
326 | ispctrl_val &= ~ISPCTRL_SYNC_DETECT_MASK; |
327 | ispctrl_val |= ISPCTRL_SYNC_DETECT_VSRISE; | |
328 | ||
329 | isp_reg_writel(isp, ispctrl_val, OMAP3_ISP_IOMEM_MAIN, ISP_CTRL); | |
330 | } | |
331 | ||
332 | /** | |
333 | * isp_set_pixel_clock - Configures the ISP pixel clock | |
334 | * @isp: OMAP3 ISP device | |
335 | * @pixelclk: Average pixel clock in Hz | |
336 | * | |
337 | * Set the average pixel clock required by the sensor. The ISP will use the | |
338 | * lowest possible memory bandwidth settings compatible with the clock. | |
339 | **/ | |
340 | static void isp_set_pixel_clock(struct isp_device *isp, unsigned int pixelclk) | |
341 | { | |
342 | isp->isp_ccdc.vpcfg.pixelclk = pixelclk; | |
343 | } | |
344 | ||
345 | void omap3isp_hist_dma_done(struct isp_device *isp) | |
346 | { | |
347 | if (omap3isp_ccdc_busy(&isp->isp_ccdc) || | |
348 | omap3isp_stat_pcr_busy(&isp->isp_hist)) { | |
349 | /* Histogram cannot be enabled in this frame anymore */ | |
350 | atomic_set(&isp->isp_hist.buf_err, 1); | |
351 | dev_dbg(isp->dev, "hist: Out of synchronization with " | |
352 | "CCDC. Ignoring next buffer.\n"); | |
353 | } | |
354 | } | |
355 | ||
356 | static inline void isp_isr_dbg(struct isp_device *isp, u32 irqstatus) | |
357 | { | |
358 | static const char *name[] = { | |
359 | "CSIA_IRQ", | |
360 | "res1", | |
361 | "res2", | |
362 | "CSIB_LCM_IRQ", | |
363 | "CSIB_IRQ", | |
364 | "res5", | |
365 | "res6", | |
366 | "res7", | |
367 | "CCDC_VD0_IRQ", | |
368 | "CCDC_VD1_IRQ", | |
369 | "CCDC_VD2_IRQ", | |
370 | "CCDC_ERR_IRQ", | |
371 | "H3A_AF_DONE_IRQ", | |
372 | "H3A_AWB_DONE_IRQ", | |
373 | "res14", | |
374 | "res15", | |
375 | "HIST_DONE_IRQ", | |
376 | "CCDC_LSC_DONE", | |
377 | "CCDC_LSC_PREFETCH_COMPLETED", | |
378 | "CCDC_LSC_PREFETCH_ERROR", | |
379 | "PRV_DONE_IRQ", | |
380 | "CBUFF_IRQ", | |
381 | "res22", | |
382 | "res23", | |
383 | "RSZ_DONE_IRQ", | |
384 | "OVF_IRQ", | |
385 | "res26", | |
386 | "res27", | |
387 | "MMU_ERR_IRQ", | |
388 | "OCP_ERR_IRQ", | |
389 | "SEC_ERR_IRQ", | |
390 | "HS_VS_IRQ", | |
391 | }; | |
392 | int i; | |
393 | ||
394 | dev_dbg(isp->dev, ""); | |
395 | ||
396 | for (i = 0; i < ARRAY_SIZE(name); i++) { | |
397 | if ((1 << i) & irqstatus) | |
398 | printk(KERN_CONT "%s ", name[i]); | |
399 | } | |
400 | printk(KERN_CONT "\n"); | |
401 | } | |
402 | ||
403 | static void isp_isr_sbl(struct isp_device *isp) | |
404 | { | |
405 | struct device *dev = isp->dev; | |
406 | u32 sbl_pcr; | |
407 | ||
408 | /* | |
409 | * Handle shared buffer logic overflows for video buffers. | |
410 | * ISPSBL_PCR_CCDCPRV_2_RSZ_OVF can be safely ignored. | |
411 | */ | |
412 | sbl_pcr = isp_reg_readl(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_PCR); | |
413 | isp_reg_writel(isp, sbl_pcr, OMAP3_ISP_IOMEM_SBL, ISPSBL_PCR); | |
414 | sbl_pcr &= ~ISPSBL_PCR_CCDCPRV_2_RSZ_OVF; | |
415 | ||
416 | if (sbl_pcr) | |
417 | dev_dbg(dev, "SBL overflow (PCR = 0x%08x)\n", sbl_pcr); | |
418 | ||
419 | if (sbl_pcr & (ISPSBL_PCR_CCDC_WBL_OVF | ISPSBL_PCR_CSIA_WBL_OVF | |
420 | | ISPSBL_PCR_CSIB_WBL_OVF)) { | |
421 | isp->isp_ccdc.error = 1; | |
422 | if (isp->isp_ccdc.output & CCDC_OUTPUT_PREVIEW) | |
423 | isp->isp_prev.error = 1; | |
424 | if (isp->isp_ccdc.output & CCDC_OUTPUT_RESIZER) | |
425 | isp->isp_res.error = 1; | |
426 | } | |
427 | ||
428 | if (sbl_pcr & ISPSBL_PCR_PRV_WBL_OVF) { | |
429 | isp->isp_prev.error = 1; | |
430 | if (isp->isp_res.input == RESIZER_INPUT_VP && | |
431 | !(isp->isp_ccdc.output & CCDC_OUTPUT_RESIZER)) | |
432 | isp->isp_res.error = 1; | |
433 | } | |
434 | ||
435 | if (sbl_pcr & (ISPSBL_PCR_RSZ1_WBL_OVF | |
436 | | ISPSBL_PCR_RSZ2_WBL_OVF | |
437 | | ISPSBL_PCR_RSZ3_WBL_OVF | |
438 | | ISPSBL_PCR_RSZ4_WBL_OVF)) | |
439 | isp->isp_res.error = 1; | |
440 | ||
441 | if (sbl_pcr & ISPSBL_PCR_H3A_AF_WBL_OVF) | |
442 | omap3isp_stat_sbl_overflow(&isp->isp_af); | |
443 | ||
444 | if (sbl_pcr & ISPSBL_PCR_H3A_AEAWB_WBL_OVF) | |
445 | omap3isp_stat_sbl_overflow(&isp->isp_aewb); | |
446 | } | |
447 | ||
448 | /* | |
449 | * isp_isr - Interrupt Service Routine for Camera ISP module. | |
450 | * @irq: Not used currently. | |
451 | * @_isp: Pointer to the OMAP3 ISP device | |
452 | * | |
453 | * Handles the corresponding callback if plugged in. | |
454 | * | |
455 | * Returns IRQ_HANDLED when IRQ was correctly handled, or IRQ_NONE when the | |
456 | * IRQ wasn't handled. | |
457 | */ | |
458 | static irqreturn_t isp_isr(int irq, void *_isp) | |
459 | { | |
460 | static const u32 ccdc_events = IRQ0STATUS_CCDC_LSC_PREF_ERR_IRQ | | |
461 | IRQ0STATUS_CCDC_LSC_DONE_IRQ | | |
462 | IRQ0STATUS_CCDC_VD0_IRQ | | |
463 | IRQ0STATUS_CCDC_VD1_IRQ | | |
464 | IRQ0STATUS_HS_VS_IRQ; | |
465 | struct isp_device *isp = _isp; | |
466 | u32 irqstatus; | |
467 | int ret; | |
468 | ||
469 | irqstatus = isp_reg_readl(isp, OMAP3_ISP_IOMEM_MAIN, ISP_IRQ0STATUS); | |
470 | isp_reg_writel(isp, irqstatus, OMAP3_ISP_IOMEM_MAIN, ISP_IRQ0STATUS); | |
471 | ||
472 | isp_isr_sbl(isp); | |
473 | ||
474 | if (irqstatus & IRQ0STATUS_CSIA_IRQ) { | |
475 | ret = omap3isp_csi2_isr(&isp->isp_csi2a); | |
476 | if (ret) | |
477 | isp->isp_ccdc.error = 1; | |
478 | } | |
479 | ||
480 | if (irqstatus & IRQ0STATUS_CSIB_IRQ) { | |
481 | ret = omap3isp_ccp2_isr(&isp->isp_ccp2); | |
482 | if (ret) | |
483 | isp->isp_ccdc.error = 1; | |
484 | } | |
485 | ||
486 | if (irqstatus & IRQ0STATUS_CCDC_VD0_IRQ) { | |
487 | if (isp->isp_ccdc.output & CCDC_OUTPUT_PREVIEW) | |
488 | omap3isp_preview_isr_frame_sync(&isp->isp_prev); | |
489 | if (isp->isp_ccdc.output & CCDC_OUTPUT_RESIZER) | |
490 | omap3isp_resizer_isr_frame_sync(&isp->isp_res); | |
491 | omap3isp_stat_isr_frame_sync(&isp->isp_aewb); | |
492 | omap3isp_stat_isr_frame_sync(&isp->isp_af); | |
493 | omap3isp_stat_isr_frame_sync(&isp->isp_hist); | |
494 | } | |
495 | ||
496 | if (irqstatus & ccdc_events) | |
497 | omap3isp_ccdc_isr(&isp->isp_ccdc, irqstatus & ccdc_events); | |
498 | ||
499 | if (irqstatus & IRQ0STATUS_PRV_DONE_IRQ) { | |
500 | if (isp->isp_prev.output & PREVIEW_OUTPUT_RESIZER) | |
501 | omap3isp_resizer_isr_frame_sync(&isp->isp_res); | |
502 | omap3isp_preview_isr(&isp->isp_prev); | |
503 | } | |
504 | ||
505 | if (irqstatus & IRQ0STATUS_RSZ_DONE_IRQ) | |
506 | omap3isp_resizer_isr(&isp->isp_res); | |
507 | ||
508 | if (irqstatus & IRQ0STATUS_H3A_AWB_DONE_IRQ) | |
509 | omap3isp_stat_isr(&isp->isp_aewb); | |
510 | ||
511 | if (irqstatus & IRQ0STATUS_H3A_AF_DONE_IRQ) | |
512 | omap3isp_stat_isr(&isp->isp_af); | |
513 | ||
514 | if (irqstatus & IRQ0STATUS_HIST_DONE_IRQ) | |
515 | omap3isp_stat_isr(&isp->isp_hist); | |
516 | ||
517 | omap3isp_flush(isp); | |
518 | ||
519 | #if defined(DEBUG) && defined(ISP_ISR_DEBUG) | |
520 | isp_isr_dbg(isp, irqstatus); | |
521 | #endif | |
522 | ||
523 | return IRQ_HANDLED; | |
524 | } | |
525 | ||
526 | /* ----------------------------------------------------------------------------- | |
527 | * Pipeline power management | |
528 | * | |
529 | * Entities must be powered up when part of a pipeline that contains at least | |
530 | * one open video device node. | |
531 | * | |
532 | * To achieve this use the entity use_count field to track the number of users. | |
533 | * For entities corresponding to video device nodes the use_count field stores | |
534 | * the users count of the node. For entities corresponding to subdevs the | |
535 | * use_count field stores the total number of users of all video device nodes | |
536 | * in the pipeline. | |
537 | * | |
538 | * The omap3isp_pipeline_pm_use() function must be called in the open() and | |
539 | * close() handlers of video device nodes. It increments or decrements the use | |
540 | * count of all subdev entities in the pipeline. | |
541 | * | |
542 | * To react to link management on powered pipelines, the link setup notification | |
543 | * callback updates the use count of all entities in the source and sink sides | |
544 | * of the link. | |
545 | */ | |
546 | ||
547 | /* | |
548 | * isp_pipeline_pm_use_count - Count the number of users of a pipeline | |
549 | * @entity: The entity | |
550 | * | |
551 | * Return the total number of users of all video device nodes in the pipeline. | |
552 | */ | |
553 | static int isp_pipeline_pm_use_count(struct media_entity *entity) | |
554 | { | |
555 | struct media_entity_graph graph; | |
556 | int use = 0; | |
557 | ||
558 | media_entity_graph_walk_start(&graph, entity); | |
559 | ||
560 | while ((entity = media_entity_graph_walk_next(&graph))) { | |
561 | if (media_entity_type(entity) == MEDIA_ENT_T_DEVNODE) | |
562 | use += entity->use_count; | |
563 | } | |
564 | ||
565 | return use; | |
566 | } | |
567 | ||
568 | /* | |
569 | * isp_pipeline_pm_power_one - Apply power change to an entity | |
570 | * @entity: The entity | |
571 | * @change: Use count change | |
572 | * | |
573 | * Change the entity use count by @change. If the entity is a subdev update its | |
574 | * power state by calling the core::s_power operation when the use count goes | |
575 | * from 0 to != 0 or from != 0 to 0. | |
576 | * | |
577 | * Return 0 on success or a negative error code on failure. | |
578 | */ | |
579 | static int isp_pipeline_pm_power_one(struct media_entity *entity, int change) | |
580 | { | |
581 | struct v4l2_subdev *subdev; | |
582 | int ret; | |
583 | ||
584 | subdev = media_entity_type(entity) == MEDIA_ENT_T_V4L2_SUBDEV | |
585 | ? media_entity_to_v4l2_subdev(entity) : NULL; | |
586 | ||
587 | if (entity->use_count == 0 && change > 0 && subdev != NULL) { | |
588 | ret = v4l2_subdev_call(subdev, core, s_power, 1); | |
589 | if (ret < 0 && ret != -ENOIOCTLCMD) | |
590 | return ret; | |
591 | } | |
592 | ||
593 | entity->use_count += change; | |
594 | WARN_ON(entity->use_count < 0); | |
595 | ||
596 | if (entity->use_count == 0 && change < 0 && subdev != NULL) | |
597 | v4l2_subdev_call(subdev, core, s_power, 0); | |
598 | ||
599 | return 0; | |
600 | } | |
601 | ||
602 | /* | |
603 | * isp_pipeline_pm_power - Apply power change to all entities in a pipeline | |
604 | * @entity: The entity | |
605 | * @change: Use count change | |
606 | * | |
607 | * Walk the pipeline to update the use count and the power state of all non-node | |
608 | * entities. | |
609 | * | |
610 | * Return 0 on success or a negative error code on failure. | |
611 | */ | |
612 | static int isp_pipeline_pm_power(struct media_entity *entity, int change) | |
613 | { | |
614 | struct media_entity_graph graph; | |
615 | struct media_entity *first = entity; | |
616 | int ret = 0; | |
617 | ||
618 | if (!change) | |
619 | return 0; | |
620 | ||
621 | media_entity_graph_walk_start(&graph, entity); | |
622 | ||
623 | while (!ret && (entity = media_entity_graph_walk_next(&graph))) | |
624 | if (media_entity_type(entity) != MEDIA_ENT_T_DEVNODE) | |
625 | ret = isp_pipeline_pm_power_one(entity, change); | |
626 | ||
627 | if (!ret) | |
628 | return 0; | |
629 | ||
630 | media_entity_graph_walk_start(&graph, first); | |
631 | ||
632 | while ((first = media_entity_graph_walk_next(&graph)) | |
633 | && first != entity) | |
634 | if (media_entity_type(first) != MEDIA_ENT_T_DEVNODE) | |
635 | isp_pipeline_pm_power_one(first, -change); | |
636 | ||
637 | return ret; | |
638 | } | |
639 | ||
640 | /* | |
641 | * omap3isp_pipeline_pm_use - Update the use count of an entity | |
642 | * @entity: The entity | |
643 | * @use: Use (1) or stop using (0) the entity | |
644 | * | |
645 | * Update the use count of all entities in the pipeline and power entities on or | |
646 | * off accordingly. | |
647 | * | |
648 | * Return 0 on success or a negative error code on failure. Powering entities | |
649 | * off is assumed to never fail. No failure can occur when the use parameter is | |
650 | * set to 0. | |
651 | */ | |
652 | int omap3isp_pipeline_pm_use(struct media_entity *entity, int use) | |
653 | { | |
654 | int change = use ? 1 : -1; | |
655 | int ret; | |
656 | ||
657 | mutex_lock(&entity->parent->graph_mutex); | |
658 | ||
659 | /* Apply use count to node. */ | |
660 | entity->use_count += change; | |
661 | WARN_ON(entity->use_count < 0); | |
662 | ||
663 | /* Apply power change to connected non-nodes. */ | |
664 | ret = isp_pipeline_pm_power(entity, change); | |
e2241531 LP |
665 | if (ret < 0) |
666 | entity->use_count -= change; | |
448de7e7 SA |
667 | |
668 | mutex_unlock(&entity->parent->graph_mutex); | |
669 | ||
670 | return ret; | |
671 | } | |
672 | ||
673 | /* | |
674 | * isp_pipeline_link_notify - Link management notification callback | |
675 | * @source: Pad at the start of the link | |
676 | * @sink: Pad at the end of the link | |
677 | * @flags: New link flags that will be applied | |
678 | * | |
679 | * React to link management on powered pipelines by updating the use count of | |
680 | * all entities in the source and sink sides of the link. Entities are powered | |
681 | * on or off accordingly. | |
682 | * | |
683 | * Return 0 on success or a negative error code on failure. Powering entities | |
684 | * off is assumed to never fail. This function will not fail for disconnection | |
685 | * events. | |
686 | */ | |
687 | static int isp_pipeline_link_notify(struct media_pad *source, | |
688 | struct media_pad *sink, u32 flags) | |
689 | { | |
690 | int source_use = isp_pipeline_pm_use_count(source->entity); | |
691 | int sink_use = isp_pipeline_pm_use_count(sink->entity); | |
692 | int ret; | |
693 | ||
694 | if (!(flags & MEDIA_LNK_FL_ENABLED)) { | |
695 | /* Powering off entities is assumed to never fail. */ | |
696 | isp_pipeline_pm_power(source->entity, -sink_use); | |
697 | isp_pipeline_pm_power(sink->entity, -source_use); | |
698 | return 0; | |
699 | } | |
700 | ||
701 | ret = isp_pipeline_pm_power(source->entity, sink_use); | |
702 | if (ret < 0) | |
703 | return ret; | |
704 | ||
705 | ret = isp_pipeline_pm_power(sink->entity, source_use); | |
706 | if (ret < 0) | |
707 | isp_pipeline_pm_power(source->entity, -sink_use); | |
708 | ||
709 | return ret; | |
710 | } | |
711 | ||
712 | /* ----------------------------------------------------------------------------- | |
713 | * Pipeline stream management | |
714 | */ | |
715 | ||
716 | /* | |
717 | * isp_pipeline_enable - Enable streaming on a pipeline | |
718 | * @pipe: ISP pipeline | |
719 | * @mode: Stream mode (single shot or continuous) | |
720 | * | |
721 | * Walk the entities chain starting at the pipeline output video node and start | |
722 | * all modules in the chain in the given mode. | |
723 | * | |
25985edc | 724 | * Return 0 if successful, or the return value of the failed video::s_stream |
448de7e7 SA |
725 | * operation otherwise. |
726 | */ | |
727 | static int isp_pipeline_enable(struct isp_pipeline *pipe, | |
728 | enum isp_pipeline_stream_state mode) | |
729 | { | |
730 | struct isp_device *isp = pipe->output->isp; | |
731 | struct media_entity *entity; | |
732 | struct media_pad *pad; | |
733 | struct v4l2_subdev *subdev; | |
734 | unsigned long flags; | |
735 | int ret = 0; | |
736 | ||
737 | spin_lock_irqsave(&pipe->lock, flags); | |
738 | pipe->state &= ~(ISP_PIPELINE_IDLE_INPUT | ISP_PIPELINE_IDLE_OUTPUT); | |
739 | spin_unlock_irqrestore(&pipe->lock, flags); | |
740 | ||
741 | pipe->do_propagation = false; | |
742 | ||
743 | entity = &pipe->output->video.entity; | |
744 | while (1) { | |
745 | pad = &entity->pads[0]; | |
746 | if (!(pad->flags & MEDIA_PAD_FL_SINK)) | |
747 | break; | |
748 | ||
749 | pad = media_entity_remote_source(pad); | |
750 | if (pad == NULL || | |
751 | media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV) | |
752 | break; | |
753 | ||
754 | entity = pad->entity; | |
755 | subdev = media_entity_to_v4l2_subdev(entity); | |
756 | ||
757 | ret = v4l2_subdev_call(subdev, video, s_stream, mode); | |
758 | if (ret < 0 && ret != -ENOIOCTLCMD) | |
759 | break; | |
760 | ||
761 | if (subdev == &isp->isp_ccdc.subdev) { | |
762 | v4l2_subdev_call(&isp->isp_aewb.subdev, video, | |
763 | s_stream, mode); | |
764 | v4l2_subdev_call(&isp->isp_af.subdev, video, | |
765 | s_stream, mode); | |
766 | v4l2_subdev_call(&isp->isp_hist.subdev, video, | |
767 | s_stream, mode); | |
768 | pipe->do_propagation = true; | |
769 | } | |
770 | } | |
771 | ||
772 | /* Frame number propagation. In continuous streaming mode the number | |
773 | * is incremented in the frame start ISR. In mem-to-mem mode | |
774 | * singleshot is used and frame start IRQs are not available. | |
775 | * Thus we have to increment the number here. | |
776 | */ | |
777 | if (pipe->do_propagation && mode == ISP_PIPELINE_STREAM_SINGLESHOT) | |
778 | atomic_inc(&pipe->frame_number); | |
779 | ||
780 | return ret; | |
781 | } | |
782 | ||
783 | static int isp_pipeline_wait_resizer(struct isp_device *isp) | |
784 | { | |
785 | return omap3isp_resizer_busy(&isp->isp_res); | |
786 | } | |
787 | ||
788 | static int isp_pipeline_wait_preview(struct isp_device *isp) | |
789 | { | |
790 | return omap3isp_preview_busy(&isp->isp_prev); | |
791 | } | |
792 | ||
793 | static int isp_pipeline_wait_ccdc(struct isp_device *isp) | |
794 | { | |
795 | return omap3isp_stat_busy(&isp->isp_af) | |
796 | || omap3isp_stat_busy(&isp->isp_aewb) | |
797 | || omap3isp_stat_busy(&isp->isp_hist) | |
798 | || omap3isp_ccdc_busy(&isp->isp_ccdc); | |
799 | } | |
800 | ||
801 | #define ISP_STOP_TIMEOUT msecs_to_jiffies(1000) | |
802 | ||
803 | static int isp_pipeline_wait(struct isp_device *isp, | |
804 | int(*busy)(struct isp_device *isp)) | |
805 | { | |
806 | unsigned long timeout = jiffies + ISP_STOP_TIMEOUT; | |
807 | ||
808 | while (!time_after(jiffies, timeout)) { | |
809 | if (!busy(isp)) | |
810 | return 0; | |
811 | } | |
812 | ||
813 | return 1; | |
814 | } | |
815 | ||
816 | /* | |
817 | * isp_pipeline_disable - Disable streaming on a pipeline | |
818 | * @pipe: ISP pipeline | |
819 | * | |
820 | * Walk the entities chain starting at the pipeline output video node and stop | |
821 | * all modules in the chain. Wait synchronously for the modules to be stopped if | |
822 | * necessary. | |
823 | * | |
824 | * Return 0 if all modules have been properly stopped, or -ETIMEDOUT if a module | |
825 | * can't be stopped (in which case a software reset of the ISP is probably | |
826 | * necessary). | |
827 | */ | |
828 | static int isp_pipeline_disable(struct isp_pipeline *pipe) | |
829 | { | |
830 | struct isp_device *isp = pipe->output->isp; | |
831 | struct media_entity *entity; | |
832 | struct media_pad *pad; | |
833 | struct v4l2_subdev *subdev; | |
834 | int failure = 0; | |
835 | int ret; | |
836 | ||
837 | /* | |
838 | * We need to stop all the modules after CCDC first or they'll | |
839 | * never stop since they may not get a full frame from CCDC. | |
840 | */ | |
841 | entity = &pipe->output->video.entity; | |
842 | while (1) { | |
843 | pad = &entity->pads[0]; | |
844 | if (!(pad->flags & MEDIA_PAD_FL_SINK)) | |
845 | break; | |
846 | ||
847 | pad = media_entity_remote_source(pad); | |
848 | if (pad == NULL || | |
849 | media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV) | |
850 | break; | |
851 | ||
852 | entity = pad->entity; | |
853 | subdev = media_entity_to_v4l2_subdev(entity); | |
854 | ||
855 | if (subdev == &isp->isp_ccdc.subdev) { | |
856 | v4l2_subdev_call(&isp->isp_aewb.subdev, | |
857 | video, s_stream, 0); | |
858 | v4l2_subdev_call(&isp->isp_af.subdev, | |
859 | video, s_stream, 0); | |
860 | v4l2_subdev_call(&isp->isp_hist.subdev, | |
861 | video, s_stream, 0); | |
862 | } | |
863 | ||
864 | v4l2_subdev_call(subdev, video, s_stream, 0); | |
865 | ||
866 | if (subdev == &isp->isp_res.subdev) | |
867 | ret = isp_pipeline_wait(isp, isp_pipeline_wait_resizer); | |
868 | else if (subdev == &isp->isp_prev.subdev) | |
869 | ret = isp_pipeline_wait(isp, isp_pipeline_wait_preview); | |
870 | else if (subdev == &isp->isp_ccdc.subdev) | |
871 | ret = isp_pipeline_wait(isp, isp_pipeline_wait_ccdc); | |
872 | else | |
873 | ret = 0; | |
874 | ||
875 | if (ret) { | |
876 | dev_info(isp->dev, "Unable to stop %s\n", subdev->name); | |
877 | failure = -ETIMEDOUT; | |
878 | } | |
879 | } | |
880 | ||
994d5375 LP |
881 | if (failure < 0) |
882 | isp->needs_reset = true; | |
883 | ||
448de7e7 SA |
884 | return failure; |
885 | } | |
886 | ||
887 | /* | |
888 | * omap3isp_pipeline_set_stream - Enable/disable streaming on a pipeline | |
889 | * @pipe: ISP pipeline | |
890 | * @state: Stream state (stopped, single shot or continuous) | |
891 | * | |
892 | * Set the pipeline to the given stream state. Pipelines can be started in | |
893 | * single-shot or continuous mode. | |
894 | * | |
25985edc | 895 | * Return 0 if successful, or the return value of the failed video::s_stream |
994d5375 LP |
896 | * operation otherwise. The pipeline state is not updated when the operation |
897 | * fails, except when stopping the pipeline. | |
448de7e7 SA |
898 | */ |
899 | int omap3isp_pipeline_set_stream(struct isp_pipeline *pipe, | |
900 | enum isp_pipeline_stream_state state) | |
901 | { | |
902 | int ret; | |
903 | ||
904 | if (state == ISP_PIPELINE_STREAM_STOPPED) | |
905 | ret = isp_pipeline_disable(pipe); | |
906 | else | |
907 | ret = isp_pipeline_enable(pipe, state); | |
994d5375 LP |
908 | |
909 | if (ret == 0 || state == ISP_PIPELINE_STREAM_STOPPED) | |
910 | pipe->stream_state = state; | |
448de7e7 SA |
911 | |
912 | return ret; | |
913 | } | |
914 | ||
915 | /* | |
916 | * isp_pipeline_resume - Resume streaming on a pipeline | |
917 | * @pipe: ISP pipeline | |
918 | * | |
919 | * Resume video output and input and re-enable pipeline. | |
920 | */ | |
921 | static void isp_pipeline_resume(struct isp_pipeline *pipe) | |
922 | { | |
923 | int singleshot = pipe->stream_state == ISP_PIPELINE_STREAM_SINGLESHOT; | |
924 | ||
925 | omap3isp_video_resume(pipe->output, !singleshot); | |
926 | if (singleshot) | |
927 | omap3isp_video_resume(pipe->input, 0); | |
928 | isp_pipeline_enable(pipe, pipe->stream_state); | |
929 | } | |
930 | ||
931 | /* | |
932 | * isp_pipeline_suspend - Suspend streaming on a pipeline | |
933 | * @pipe: ISP pipeline | |
934 | * | |
935 | * Suspend pipeline. | |
936 | */ | |
937 | static void isp_pipeline_suspend(struct isp_pipeline *pipe) | |
938 | { | |
939 | isp_pipeline_disable(pipe); | |
940 | } | |
941 | ||
942 | /* | |
943 | * isp_pipeline_is_last - Verify if entity has an enabled link to the output | |
944 | * video node | |
945 | * @me: ISP module's media entity | |
946 | * | |
947 | * Returns 1 if the entity has an enabled link to the output video node or 0 | |
948 | * otherwise. It's true only while pipeline can have no more than one output | |
949 | * node. | |
950 | */ | |
951 | static int isp_pipeline_is_last(struct media_entity *me) | |
952 | { | |
953 | struct isp_pipeline *pipe; | |
954 | struct media_pad *pad; | |
955 | ||
956 | if (!me->pipe) | |
957 | return 0; | |
958 | pipe = to_isp_pipeline(me); | |
959 | if (pipe->stream_state == ISP_PIPELINE_STREAM_STOPPED) | |
960 | return 0; | |
961 | pad = media_entity_remote_source(&pipe->output->pad); | |
962 | return pad->entity == me; | |
963 | } | |
964 | ||
965 | /* | |
966 | * isp_suspend_module_pipeline - Suspend pipeline to which belongs the module | |
967 | * @me: ISP module's media entity | |
968 | * | |
969 | * Suspend the whole pipeline if module's entity has an enabled link to the | |
970 | * output video node. It works only while pipeline can have no more than one | |
971 | * output node. | |
972 | */ | |
973 | static void isp_suspend_module_pipeline(struct media_entity *me) | |
974 | { | |
975 | if (isp_pipeline_is_last(me)) | |
976 | isp_pipeline_suspend(to_isp_pipeline(me)); | |
977 | } | |
978 | ||
979 | /* | |
980 | * isp_resume_module_pipeline - Resume pipeline to which belongs the module | |
981 | * @me: ISP module's media entity | |
982 | * | |
983 | * Resume the whole pipeline if module's entity has an enabled link to the | |
984 | * output video node. It works only while pipeline can have no more than one | |
985 | * output node. | |
986 | */ | |
987 | static void isp_resume_module_pipeline(struct media_entity *me) | |
988 | { | |
989 | if (isp_pipeline_is_last(me)) | |
990 | isp_pipeline_resume(to_isp_pipeline(me)); | |
991 | } | |
992 | ||
993 | /* | |
994 | * isp_suspend_modules - Suspend ISP submodules. | |
995 | * @isp: OMAP3 ISP device | |
996 | * | |
997 | * Returns 0 if suspend left in idle state all the submodules properly, | |
998 | * or returns 1 if a general Reset is required to suspend the submodules. | |
999 | */ | |
1000 | static int isp_suspend_modules(struct isp_device *isp) | |
1001 | { | |
1002 | unsigned long timeout; | |
1003 | ||
1004 | omap3isp_stat_suspend(&isp->isp_aewb); | |
1005 | omap3isp_stat_suspend(&isp->isp_af); | |
1006 | omap3isp_stat_suspend(&isp->isp_hist); | |
1007 | isp_suspend_module_pipeline(&isp->isp_res.subdev.entity); | |
1008 | isp_suspend_module_pipeline(&isp->isp_prev.subdev.entity); | |
1009 | isp_suspend_module_pipeline(&isp->isp_ccdc.subdev.entity); | |
1010 | isp_suspend_module_pipeline(&isp->isp_csi2a.subdev.entity); | |
1011 | isp_suspend_module_pipeline(&isp->isp_ccp2.subdev.entity); | |
1012 | ||
1013 | timeout = jiffies + ISP_STOP_TIMEOUT; | |
1014 | while (omap3isp_stat_busy(&isp->isp_af) | |
1015 | || omap3isp_stat_busy(&isp->isp_aewb) | |
1016 | || omap3isp_stat_busy(&isp->isp_hist) | |
1017 | || omap3isp_preview_busy(&isp->isp_prev) | |
1018 | || omap3isp_resizer_busy(&isp->isp_res) | |
1019 | || omap3isp_ccdc_busy(&isp->isp_ccdc)) { | |
1020 | if (time_after(jiffies, timeout)) { | |
1021 | dev_info(isp->dev, "can't stop modules.\n"); | |
1022 | return 1; | |
1023 | } | |
1024 | msleep(1); | |
1025 | } | |
1026 | ||
1027 | return 0; | |
1028 | } | |
1029 | ||
1030 | /* | |
1031 | * isp_resume_modules - Resume ISP submodules. | |
1032 | * @isp: OMAP3 ISP device | |
1033 | */ | |
1034 | static void isp_resume_modules(struct isp_device *isp) | |
1035 | { | |
1036 | omap3isp_stat_resume(&isp->isp_aewb); | |
1037 | omap3isp_stat_resume(&isp->isp_af); | |
1038 | omap3isp_stat_resume(&isp->isp_hist); | |
1039 | isp_resume_module_pipeline(&isp->isp_res.subdev.entity); | |
1040 | isp_resume_module_pipeline(&isp->isp_prev.subdev.entity); | |
1041 | isp_resume_module_pipeline(&isp->isp_ccdc.subdev.entity); | |
1042 | isp_resume_module_pipeline(&isp->isp_csi2a.subdev.entity); | |
1043 | isp_resume_module_pipeline(&isp->isp_ccp2.subdev.entity); | |
1044 | } | |
1045 | ||
1046 | /* | |
1047 | * isp_reset - Reset ISP with a timeout wait for idle. | |
1048 | * @isp: OMAP3 ISP device | |
1049 | */ | |
1050 | static int isp_reset(struct isp_device *isp) | |
1051 | { | |
1052 | unsigned long timeout = 0; | |
1053 | ||
1054 | isp_reg_writel(isp, | |
1055 | isp_reg_readl(isp, OMAP3_ISP_IOMEM_MAIN, ISP_SYSCONFIG) | |
1056 | | ISP_SYSCONFIG_SOFTRESET, | |
1057 | OMAP3_ISP_IOMEM_MAIN, ISP_SYSCONFIG); | |
1058 | while (!(isp_reg_readl(isp, OMAP3_ISP_IOMEM_MAIN, | |
1059 | ISP_SYSSTATUS) & 0x1)) { | |
1060 | if (timeout++ > 10000) { | |
1061 | dev_alert(isp->dev, "cannot reset ISP\n"); | |
1062 | return -ETIMEDOUT; | |
1063 | } | |
1064 | udelay(1); | |
1065 | } | |
1066 | ||
1067 | return 0; | |
1068 | } | |
1069 | ||
1070 | /* | |
1071 | * isp_save_context - Saves the values of the ISP module registers. | |
1072 | * @isp: OMAP3 ISP device | |
1073 | * @reg_list: Structure containing pairs of register address and value to | |
1074 | * modify on OMAP. | |
1075 | */ | |
1076 | static void | |
1077 | isp_save_context(struct isp_device *isp, struct isp_reg *reg_list) | |
1078 | { | |
1079 | struct isp_reg *next = reg_list; | |
1080 | ||
1081 | for (; next->reg != ISP_TOK_TERM; next++) | |
1082 | next->val = isp_reg_readl(isp, next->mmio_range, next->reg); | |
1083 | } | |
1084 | ||
1085 | /* | |
1086 | * isp_restore_context - Restores the values of the ISP module registers. | |
1087 | * @isp: OMAP3 ISP device | |
1088 | * @reg_list: Structure containing pairs of register address and value to | |
1089 | * modify on OMAP. | |
1090 | */ | |
1091 | static void | |
1092 | isp_restore_context(struct isp_device *isp, struct isp_reg *reg_list) | |
1093 | { | |
1094 | struct isp_reg *next = reg_list; | |
1095 | ||
1096 | for (; next->reg != ISP_TOK_TERM; next++) | |
1097 | isp_reg_writel(isp, next->val, next->mmio_range, next->reg); | |
1098 | } | |
1099 | ||
1100 | /* | |
1101 | * isp_save_ctx - Saves ISP, CCDC, HIST, H3A, PREV, RESZ & MMU context. | |
1102 | * @isp: OMAP3 ISP device | |
1103 | * | |
1104 | * Routine for saving the context of each module in the ISP. | |
1105 | * CCDC, HIST, H3A, PREV, RESZ and MMU. | |
1106 | */ | |
1107 | static void isp_save_ctx(struct isp_device *isp) | |
1108 | { | |
1109 | isp_save_context(isp, isp_reg_list); | |
1110 | if (isp->iommu) | |
1111 | iommu_save_ctx(isp->iommu); | |
1112 | } | |
1113 | ||
1114 | /* | |
1115 | * isp_restore_ctx - Restores ISP, CCDC, HIST, H3A, PREV, RESZ & MMU context. | |
1116 | * @isp: OMAP3 ISP device | |
1117 | * | |
1118 | * Routine for restoring the context of each module in the ISP. | |
1119 | * CCDC, HIST, H3A, PREV, RESZ and MMU. | |
1120 | */ | |
1121 | static void isp_restore_ctx(struct isp_device *isp) | |
1122 | { | |
1123 | isp_restore_context(isp, isp_reg_list); | |
1124 | if (isp->iommu) | |
1125 | iommu_restore_ctx(isp->iommu); | |
1126 | omap3isp_ccdc_restore_context(isp); | |
1127 | omap3isp_preview_restore_context(isp); | |
1128 | } | |
1129 | ||
1130 | /* ----------------------------------------------------------------------------- | |
1131 | * SBL resources management | |
1132 | */ | |
1133 | #define OMAP3_ISP_SBL_READ (OMAP3_ISP_SBL_CSI1_READ | \ | |
1134 | OMAP3_ISP_SBL_CCDC_LSC_READ | \ | |
1135 | OMAP3_ISP_SBL_PREVIEW_READ | \ | |
1136 | OMAP3_ISP_SBL_RESIZER_READ) | |
1137 | #define OMAP3_ISP_SBL_WRITE (OMAP3_ISP_SBL_CSI1_WRITE | \ | |
1138 | OMAP3_ISP_SBL_CSI2A_WRITE | \ | |
1139 | OMAP3_ISP_SBL_CSI2C_WRITE | \ | |
1140 | OMAP3_ISP_SBL_CCDC_WRITE | \ | |
1141 | OMAP3_ISP_SBL_PREVIEW_WRITE) | |
1142 | ||
1143 | void omap3isp_sbl_enable(struct isp_device *isp, enum isp_sbl_resource res) | |
1144 | { | |
1145 | u32 sbl = 0; | |
1146 | ||
1147 | isp->sbl_resources |= res; | |
1148 | ||
1149 | if (isp->sbl_resources & OMAP3_ISP_SBL_CSI1_READ) | |
1150 | sbl |= ISPCTRL_SBL_SHARED_RPORTA; | |
1151 | ||
1152 | if (isp->sbl_resources & OMAP3_ISP_SBL_CCDC_LSC_READ) | |
1153 | sbl |= ISPCTRL_SBL_SHARED_RPORTB; | |
1154 | ||
1155 | if (isp->sbl_resources & OMAP3_ISP_SBL_CSI2C_WRITE) | |
1156 | sbl |= ISPCTRL_SBL_SHARED_WPORTC; | |
1157 | ||
1158 | if (isp->sbl_resources & OMAP3_ISP_SBL_RESIZER_WRITE) | |
1159 | sbl |= ISPCTRL_SBL_WR0_RAM_EN; | |
1160 | ||
1161 | if (isp->sbl_resources & OMAP3_ISP_SBL_WRITE) | |
1162 | sbl |= ISPCTRL_SBL_WR1_RAM_EN; | |
1163 | ||
1164 | if (isp->sbl_resources & OMAP3_ISP_SBL_READ) | |
1165 | sbl |= ISPCTRL_SBL_RD_RAM_EN; | |
1166 | ||
1167 | isp_reg_set(isp, OMAP3_ISP_IOMEM_MAIN, ISP_CTRL, sbl); | |
1168 | } | |
1169 | ||
1170 | void omap3isp_sbl_disable(struct isp_device *isp, enum isp_sbl_resource res) | |
1171 | { | |
1172 | u32 sbl = 0; | |
1173 | ||
1174 | isp->sbl_resources &= ~res; | |
1175 | ||
1176 | if (!(isp->sbl_resources & OMAP3_ISP_SBL_CSI1_READ)) | |
1177 | sbl |= ISPCTRL_SBL_SHARED_RPORTA; | |
1178 | ||
1179 | if (!(isp->sbl_resources & OMAP3_ISP_SBL_CCDC_LSC_READ)) | |
1180 | sbl |= ISPCTRL_SBL_SHARED_RPORTB; | |
1181 | ||
1182 | if (!(isp->sbl_resources & OMAP3_ISP_SBL_CSI2C_WRITE)) | |
1183 | sbl |= ISPCTRL_SBL_SHARED_WPORTC; | |
1184 | ||
1185 | if (!(isp->sbl_resources & OMAP3_ISP_SBL_RESIZER_WRITE)) | |
1186 | sbl |= ISPCTRL_SBL_WR0_RAM_EN; | |
1187 | ||
1188 | if (!(isp->sbl_resources & OMAP3_ISP_SBL_WRITE)) | |
1189 | sbl |= ISPCTRL_SBL_WR1_RAM_EN; | |
1190 | ||
1191 | if (!(isp->sbl_resources & OMAP3_ISP_SBL_READ)) | |
1192 | sbl |= ISPCTRL_SBL_RD_RAM_EN; | |
1193 | ||
1194 | isp_reg_clr(isp, OMAP3_ISP_IOMEM_MAIN, ISP_CTRL, sbl); | |
1195 | } | |
1196 | ||
1197 | /* | |
1198 | * isp_module_sync_idle - Helper to sync module with its idle state | |
1199 | * @me: ISP submodule's media entity | |
1200 | * @wait: ISP submodule's wait queue for streamoff/interrupt synchronization | |
1201 | * @stopping: flag which tells module wants to stop | |
1202 | * | |
1203 | * This function checks if ISP submodule needs to wait for next interrupt. If | |
1204 | * yes, makes the caller to sleep while waiting for such event. | |
1205 | */ | |
1206 | int omap3isp_module_sync_idle(struct media_entity *me, wait_queue_head_t *wait, | |
1207 | atomic_t *stopping) | |
1208 | { | |
1209 | struct isp_pipeline *pipe = to_isp_pipeline(me); | |
1210 | ||
1211 | if (pipe->stream_state == ISP_PIPELINE_STREAM_STOPPED || | |
1212 | (pipe->stream_state == ISP_PIPELINE_STREAM_SINGLESHOT && | |
1213 | !isp_pipeline_ready(pipe))) | |
1214 | return 0; | |
1215 | ||
1216 | /* | |
1217 | * atomic_set() doesn't include memory barrier on ARM platform for SMP | |
1218 | * scenario. We'll call it here to avoid race conditions. | |
1219 | */ | |
1220 | atomic_set(stopping, 1); | |
1221 | smp_mb(); | |
1222 | ||
1223 | /* | |
1224 | * If module is the last one, it's writing to memory. In this case, | |
1225 | * it's necessary to check if the module is already paused due to | |
1226 | * DMA queue underrun or if it has to wait for next interrupt to be | |
1227 | * idle. | |
1228 | * If it isn't the last one, the function won't sleep but *stopping | |
1229 | * will still be set to warn next submodule caller's interrupt the | |
1230 | * module wants to be idle. | |
1231 | */ | |
1232 | if (isp_pipeline_is_last(me)) { | |
1233 | struct isp_video *video = pipe->output; | |
1234 | unsigned long flags; | |
1235 | spin_lock_irqsave(&video->queue->irqlock, flags); | |
1236 | if (video->dmaqueue_flags & ISP_VIDEO_DMAQUEUE_UNDERRUN) { | |
1237 | spin_unlock_irqrestore(&video->queue->irqlock, flags); | |
1238 | atomic_set(stopping, 0); | |
1239 | smp_mb(); | |
1240 | return 0; | |
1241 | } | |
1242 | spin_unlock_irqrestore(&video->queue->irqlock, flags); | |
1243 | if (!wait_event_timeout(*wait, !atomic_read(stopping), | |
1244 | msecs_to_jiffies(1000))) { | |
1245 | atomic_set(stopping, 0); | |
1246 | smp_mb(); | |
1247 | return -ETIMEDOUT; | |
1248 | } | |
1249 | } | |
1250 | ||
1251 | return 0; | |
1252 | } | |
1253 | ||
1254 | /* | |
1255 | * omap3isp_module_sync_is_stopped - Helper to verify if module was stopping | |
1256 | * @wait: ISP submodule's wait queue for streamoff/interrupt synchronization | |
1257 | * @stopping: flag which tells module wants to stop | |
1258 | * | |
1259 | * This function checks if ISP submodule was stopping. In case of yes, it | |
1260 | * notices the caller by setting stopping to 0 and waking up the wait queue. | |
1261 | * Returns 1 if it was stopping or 0 otherwise. | |
1262 | */ | |
1263 | int omap3isp_module_sync_is_stopping(wait_queue_head_t *wait, | |
1264 | atomic_t *stopping) | |
1265 | { | |
1266 | if (atomic_cmpxchg(stopping, 1, 0)) { | |
1267 | wake_up(wait); | |
1268 | return 1; | |
1269 | } | |
1270 | ||
1271 | return 0; | |
1272 | } | |
1273 | ||
1274 | /* -------------------------------------------------------------------------- | |
1275 | * Clock management | |
1276 | */ | |
1277 | ||
1278 | #define ISPCTRL_CLKS_MASK (ISPCTRL_H3A_CLK_EN | \ | |
1279 | ISPCTRL_HIST_CLK_EN | \ | |
1280 | ISPCTRL_RSZ_CLK_EN | \ | |
1281 | (ISPCTRL_CCDC_CLK_EN | ISPCTRL_CCDC_RAM_EN) | \ | |
1282 | (ISPCTRL_PREV_CLK_EN | ISPCTRL_PREV_RAM_EN)) | |
1283 | ||
1284 | static void __isp_subclk_update(struct isp_device *isp) | |
1285 | { | |
1286 | u32 clk = 0; | |
1287 | ||
1288 | if (isp->subclk_resources & OMAP3_ISP_SUBCLK_H3A) | |
1289 | clk |= ISPCTRL_H3A_CLK_EN; | |
1290 | ||
1291 | if (isp->subclk_resources & OMAP3_ISP_SUBCLK_HIST) | |
1292 | clk |= ISPCTRL_HIST_CLK_EN; | |
1293 | ||
1294 | if (isp->subclk_resources & OMAP3_ISP_SUBCLK_RESIZER) | |
1295 | clk |= ISPCTRL_RSZ_CLK_EN; | |
1296 | ||
1297 | /* NOTE: For CCDC & Preview submodules, we need to affect internal | |
25985edc | 1298 | * RAM as well. |
448de7e7 SA |
1299 | */ |
1300 | if (isp->subclk_resources & OMAP3_ISP_SUBCLK_CCDC) | |
1301 | clk |= ISPCTRL_CCDC_CLK_EN | ISPCTRL_CCDC_RAM_EN; | |
1302 | ||
1303 | if (isp->subclk_resources & OMAP3_ISP_SUBCLK_PREVIEW) | |
1304 | clk |= ISPCTRL_PREV_CLK_EN | ISPCTRL_PREV_RAM_EN; | |
1305 | ||
1306 | isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_MAIN, ISP_CTRL, | |
1307 | ISPCTRL_CLKS_MASK, clk); | |
1308 | } | |
1309 | ||
1310 | void omap3isp_subclk_enable(struct isp_device *isp, | |
1311 | enum isp_subclk_resource res) | |
1312 | { | |
1313 | isp->subclk_resources |= res; | |
1314 | ||
1315 | __isp_subclk_update(isp); | |
1316 | } | |
1317 | ||
1318 | void omap3isp_subclk_disable(struct isp_device *isp, | |
1319 | enum isp_subclk_resource res) | |
1320 | { | |
1321 | isp->subclk_resources &= ~res; | |
1322 | ||
1323 | __isp_subclk_update(isp); | |
1324 | } | |
1325 | ||
1326 | /* | |
1327 | * isp_enable_clocks - Enable ISP clocks | |
1328 | * @isp: OMAP3 ISP device | |
1329 | * | |
1330 | * Return 0 if successful, or clk_enable return value if any of tthem fails. | |
1331 | */ | |
1332 | static int isp_enable_clocks(struct isp_device *isp) | |
1333 | { | |
1334 | int r; | |
1335 | unsigned long rate; | |
1336 | int divisor; | |
1337 | ||
1338 | /* | |
1339 | * cam_mclk clock chain: | |
1340 | * dpll4 -> dpll4_m5 -> dpll4_m5x2 -> cam_mclk | |
1341 | * | |
1342 | * In OMAP3630 dpll4_m5x2 != 2 x dpll4_m5 but both are | |
1343 | * set to the same value. Hence the rate set for dpll4_m5 | |
1344 | * has to be twice of what is set on OMAP3430 to get | |
1345 | * the required value for cam_mclk | |
1346 | */ | |
1347 | if (cpu_is_omap3630()) | |
1348 | divisor = 1; | |
1349 | else | |
1350 | divisor = 2; | |
1351 | ||
1352 | r = clk_enable(isp->clock[ISP_CLK_CAM_ICK]); | |
1353 | if (r) { | |
1354 | dev_err(isp->dev, "clk_enable cam_ick failed\n"); | |
1355 | goto out_clk_enable_ick; | |
1356 | } | |
1357 | r = clk_set_rate(isp->clock[ISP_CLK_DPLL4_M5_CK], | |
1358 | CM_CAM_MCLK_HZ/divisor); | |
1359 | if (r) { | |
1360 | dev_err(isp->dev, "clk_set_rate for dpll4_m5_ck failed\n"); | |
1361 | goto out_clk_enable_mclk; | |
1362 | } | |
1363 | r = clk_enable(isp->clock[ISP_CLK_CAM_MCLK]); | |
1364 | if (r) { | |
1365 | dev_err(isp->dev, "clk_enable cam_mclk failed\n"); | |
1366 | goto out_clk_enable_mclk; | |
1367 | } | |
1368 | rate = clk_get_rate(isp->clock[ISP_CLK_CAM_MCLK]); | |
1369 | if (rate != CM_CAM_MCLK_HZ) | |
1370 | dev_warn(isp->dev, "unexpected cam_mclk rate:\n" | |
1371 | " expected : %d\n" | |
1372 | " actual : %ld\n", CM_CAM_MCLK_HZ, rate); | |
1373 | r = clk_enable(isp->clock[ISP_CLK_CSI2_FCK]); | |
1374 | if (r) { | |
1375 | dev_err(isp->dev, "clk_enable csi2_fck failed\n"); | |
1376 | goto out_clk_enable_csi2_fclk; | |
1377 | } | |
1378 | return 0; | |
1379 | ||
1380 | out_clk_enable_csi2_fclk: | |
1381 | clk_disable(isp->clock[ISP_CLK_CAM_MCLK]); | |
1382 | out_clk_enable_mclk: | |
1383 | clk_disable(isp->clock[ISP_CLK_CAM_ICK]); | |
1384 | out_clk_enable_ick: | |
1385 | return r; | |
1386 | } | |
1387 | ||
1388 | /* | |
1389 | * isp_disable_clocks - Disable ISP clocks | |
1390 | * @isp: OMAP3 ISP device | |
1391 | */ | |
1392 | static void isp_disable_clocks(struct isp_device *isp) | |
1393 | { | |
1394 | clk_disable(isp->clock[ISP_CLK_CAM_ICK]); | |
1395 | clk_disable(isp->clock[ISP_CLK_CAM_MCLK]); | |
1396 | clk_disable(isp->clock[ISP_CLK_CSI2_FCK]); | |
1397 | } | |
1398 | ||
1399 | static const char *isp_clocks[] = { | |
1400 | "cam_ick", | |
1401 | "cam_mclk", | |
1402 | "dpll4_m5_ck", | |
1403 | "csi2_96m_fck", | |
1404 | "l3_ick", | |
1405 | }; | |
1406 | ||
1407 | static void isp_put_clocks(struct isp_device *isp) | |
1408 | { | |
1409 | unsigned int i; | |
1410 | ||
1411 | for (i = 0; i < ARRAY_SIZE(isp_clocks); ++i) { | |
1412 | if (isp->clock[i]) { | |
1413 | clk_put(isp->clock[i]); | |
1414 | isp->clock[i] = NULL; | |
1415 | } | |
1416 | } | |
1417 | } | |
1418 | ||
1419 | static int isp_get_clocks(struct isp_device *isp) | |
1420 | { | |
1421 | struct clk *clk; | |
1422 | unsigned int i; | |
1423 | ||
1424 | for (i = 0; i < ARRAY_SIZE(isp_clocks); ++i) { | |
1425 | clk = clk_get(isp->dev, isp_clocks[i]); | |
1426 | if (IS_ERR(clk)) { | |
1427 | dev_err(isp->dev, "clk_get %s failed\n", isp_clocks[i]); | |
1428 | isp_put_clocks(isp); | |
1429 | return PTR_ERR(clk); | |
1430 | } | |
1431 | ||
1432 | isp->clock[i] = clk; | |
1433 | } | |
1434 | ||
1435 | return 0; | |
1436 | } | |
1437 | ||
1438 | /* | |
1439 | * omap3isp_get - Acquire the ISP resource. | |
1440 | * | |
1441 | * Initializes the clocks for the first acquire. | |
1442 | * | |
1443 | * Increment the reference count on the ISP. If the first reference is taken, | |
1444 | * enable clocks and power-up all submodules. | |
1445 | * | |
25985edc | 1446 | * Return a pointer to the ISP device structure, or NULL if an error occurred. |
448de7e7 SA |
1447 | */ |
1448 | struct isp_device *omap3isp_get(struct isp_device *isp) | |
1449 | { | |
1450 | struct isp_device *__isp = isp; | |
1451 | ||
1452 | if (isp == NULL) | |
1453 | return NULL; | |
1454 | ||
1455 | mutex_lock(&isp->isp_mutex); | |
1456 | if (isp->ref_count > 0) | |
1457 | goto out; | |
1458 | ||
1459 | if (isp_enable_clocks(isp) < 0) { | |
1460 | __isp = NULL; | |
1461 | goto out; | |
1462 | } | |
1463 | ||
1464 | /* We don't want to restore context before saving it! */ | |
1465 | if (isp->has_context) | |
1466 | isp_restore_ctx(isp); | |
1467 | else | |
1468 | isp->has_context = 1; | |
1469 | ||
1470 | isp_enable_interrupts(isp); | |
1471 | ||
1472 | out: | |
1473 | if (__isp != NULL) | |
1474 | isp->ref_count++; | |
1475 | mutex_unlock(&isp->isp_mutex); | |
1476 | ||
1477 | return __isp; | |
1478 | } | |
1479 | ||
1480 | /* | |
1481 | * omap3isp_put - Release the ISP | |
1482 | * | |
1483 | * Decrement the reference count on the ISP. If the last reference is released, | |
1484 | * power-down all submodules, disable clocks and free temporary buffers. | |
1485 | */ | |
1486 | void omap3isp_put(struct isp_device *isp) | |
1487 | { | |
1488 | if (isp == NULL) | |
1489 | return; | |
1490 | ||
1491 | mutex_lock(&isp->isp_mutex); | |
1492 | BUG_ON(isp->ref_count == 0); | |
1493 | if (--isp->ref_count == 0) { | |
1494 | isp_disable_interrupts(isp); | |
1495 | isp_save_ctx(isp); | |
994d5375 LP |
1496 | if (isp->needs_reset) { |
1497 | isp_reset(isp); | |
1498 | isp->needs_reset = false; | |
1499 | } | |
448de7e7 SA |
1500 | isp_disable_clocks(isp); |
1501 | } | |
1502 | mutex_unlock(&isp->isp_mutex); | |
1503 | } | |
1504 | ||
1505 | /* -------------------------------------------------------------------------- | |
1506 | * Platform device driver | |
1507 | */ | |
1508 | ||
1509 | /* | |
1510 | * omap3isp_print_status - Prints the values of the ISP Control Module registers | |
1511 | * @isp: OMAP3 ISP device | |
1512 | */ | |
1513 | #define ISP_PRINT_REGISTER(isp, name)\ | |
1514 | dev_dbg(isp->dev, "###ISP " #name "=0x%08x\n", \ | |
1515 | isp_reg_readl(isp, OMAP3_ISP_IOMEM_MAIN, ISP_##name)) | |
1516 | #define SBL_PRINT_REGISTER(isp, name)\ | |
1517 | dev_dbg(isp->dev, "###SBL " #name "=0x%08x\n", \ | |
1518 | isp_reg_readl(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_##name)) | |
1519 | ||
1520 | void omap3isp_print_status(struct isp_device *isp) | |
1521 | { | |
1522 | dev_dbg(isp->dev, "-------------ISP Register dump--------------\n"); | |
1523 | ||
1524 | ISP_PRINT_REGISTER(isp, SYSCONFIG); | |
1525 | ISP_PRINT_REGISTER(isp, SYSSTATUS); | |
1526 | ISP_PRINT_REGISTER(isp, IRQ0ENABLE); | |
1527 | ISP_PRINT_REGISTER(isp, IRQ0STATUS); | |
1528 | ISP_PRINT_REGISTER(isp, TCTRL_GRESET_LENGTH); | |
1529 | ISP_PRINT_REGISTER(isp, TCTRL_PSTRB_REPLAY); | |
1530 | ISP_PRINT_REGISTER(isp, CTRL); | |
1531 | ISP_PRINT_REGISTER(isp, TCTRL_CTRL); | |
1532 | ISP_PRINT_REGISTER(isp, TCTRL_FRAME); | |
1533 | ISP_PRINT_REGISTER(isp, TCTRL_PSTRB_DELAY); | |
1534 | ISP_PRINT_REGISTER(isp, TCTRL_STRB_DELAY); | |
1535 | ISP_PRINT_REGISTER(isp, TCTRL_SHUT_DELAY); | |
1536 | ISP_PRINT_REGISTER(isp, TCTRL_PSTRB_LENGTH); | |
1537 | ISP_PRINT_REGISTER(isp, TCTRL_STRB_LENGTH); | |
1538 | ISP_PRINT_REGISTER(isp, TCTRL_SHUT_LENGTH); | |
1539 | ||
1540 | SBL_PRINT_REGISTER(isp, PCR); | |
1541 | SBL_PRINT_REGISTER(isp, SDR_REQ_EXP); | |
1542 | ||
1543 | dev_dbg(isp->dev, "--------------------------------------------\n"); | |
1544 | } | |
1545 | ||
1546 | #ifdef CONFIG_PM | |
1547 | ||
1548 | /* | |
1549 | * Power management support. | |
1550 | * | |
1551 | * As the ISP can't properly handle an input video stream interruption on a non | |
1552 | * frame boundary, the ISP pipelines need to be stopped before sensors get | |
1553 | * suspended. However, as suspending the sensors can require a running clock, | |
1554 | * which can be provided by the ISP, the ISP can't be completely suspended | |
1555 | * before the sensor. | |
1556 | * | |
1557 | * To solve this problem power management support is split into prepare/complete | |
1558 | * and suspend/resume operations. The pipelines are stopped in prepare() and the | |
1559 | * ISP clocks get disabled in suspend(). Similarly, the clocks are reenabled in | |
1560 | * resume(), and the the pipelines are restarted in complete(). | |
1561 | * | |
1562 | * TODO: PM dependencies between the ISP and sensors are not modeled explicitly | |
1563 | * yet. | |
1564 | */ | |
1565 | static int isp_pm_prepare(struct device *dev) | |
1566 | { | |
1567 | struct isp_device *isp = dev_get_drvdata(dev); | |
1568 | int reset; | |
1569 | ||
1570 | WARN_ON(mutex_is_locked(&isp->isp_mutex)); | |
1571 | ||
1572 | if (isp->ref_count == 0) | |
1573 | return 0; | |
1574 | ||
1575 | reset = isp_suspend_modules(isp); | |
1576 | isp_disable_interrupts(isp); | |
1577 | isp_save_ctx(isp); | |
1578 | if (reset) | |
1579 | isp_reset(isp); | |
1580 | ||
1581 | return 0; | |
1582 | } | |
1583 | ||
1584 | static int isp_pm_suspend(struct device *dev) | |
1585 | { | |
1586 | struct isp_device *isp = dev_get_drvdata(dev); | |
1587 | ||
1588 | WARN_ON(mutex_is_locked(&isp->isp_mutex)); | |
1589 | ||
1590 | if (isp->ref_count) | |
1591 | isp_disable_clocks(isp); | |
1592 | ||
1593 | return 0; | |
1594 | } | |
1595 | ||
1596 | static int isp_pm_resume(struct device *dev) | |
1597 | { | |
1598 | struct isp_device *isp = dev_get_drvdata(dev); | |
1599 | ||
1600 | if (isp->ref_count == 0) | |
1601 | return 0; | |
1602 | ||
1603 | return isp_enable_clocks(isp); | |
1604 | } | |
1605 | ||
1606 | static void isp_pm_complete(struct device *dev) | |
1607 | { | |
1608 | struct isp_device *isp = dev_get_drvdata(dev); | |
1609 | ||
1610 | if (isp->ref_count == 0) | |
1611 | return; | |
1612 | ||
1613 | isp_restore_ctx(isp); | |
1614 | isp_enable_interrupts(isp); | |
1615 | isp_resume_modules(isp); | |
1616 | } | |
1617 | ||
1618 | #else | |
1619 | ||
1620 | #define isp_pm_prepare NULL | |
1621 | #define isp_pm_suspend NULL | |
1622 | #define isp_pm_resume NULL | |
1623 | #define isp_pm_complete NULL | |
1624 | ||
1625 | #endif /* CONFIG_PM */ | |
1626 | ||
1627 | static void isp_unregister_entities(struct isp_device *isp) | |
1628 | { | |
1629 | omap3isp_csi2_unregister_entities(&isp->isp_csi2a); | |
1630 | omap3isp_ccp2_unregister_entities(&isp->isp_ccp2); | |
1631 | omap3isp_ccdc_unregister_entities(&isp->isp_ccdc); | |
1632 | omap3isp_preview_unregister_entities(&isp->isp_prev); | |
1633 | omap3isp_resizer_unregister_entities(&isp->isp_res); | |
1634 | omap3isp_stat_unregister_entities(&isp->isp_aewb); | |
1635 | omap3isp_stat_unregister_entities(&isp->isp_af); | |
1636 | omap3isp_stat_unregister_entities(&isp->isp_hist); | |
1637 | ||
1638 | v4l2_device_unregister(&isp->v4l2_dev); | |
1639 | media_device_unregister(&isp->media_dev); | |
1640 | } | |
1641 | ||
1642 | /* | |
1643 | * isp_register_subdev_group - Register a group of subdevices | |
1644 | * @isp: OMAP3 ISP device | |
1645 | * @board_info: I2C subdevs board information array | |
1646 | * | |
1647 | * Register all I2C subdevices in the board_info array. The array must be | |
1648 | * terminated by a NULL entry, and the first entry must be the sensor. | |
1649 | * | |
1650 | * Return a pointer to the sensor media entity if it has been successfully | |
1651 | * registered, or NULL otherwise. | |
1652 | */ | |
1653 | static struct v4l2_subdev * | |
1654 | isp_register_subdev_group(struct isp_device *isp, | |
1655 | struct isp_subdev_i2c_board_info *board_info) | |
1656 | { | |
1657 | struct v4l2_subdev *sensor = NULL; | |
1658 | unsigned int first; | |
1659 | ||
1660 | if (board_info->board_info == NULL) | |
1661 | return NULL; | |
1662 | ||
1663 | for (first = 1; board_info->board_info; ++board_info, first = 0) { | |
1664 | struct v4l2_subdev *subdev; | |
1665 | struct i2c_adapter *adapter; | |
1666 | ||
1667 | adapter = i2c_get_adapter(board_info->i2c_adapter_id); | |
1668 | if (adapter == NULL) { | |
1669 | printk(KERN_ERR "%s: Unable to get I2C adapter %d for " | |
1670 | "device %s\n", __func__, | |
1671 | board_info->i2c_adapter_id, | |
1672 | board_info->board_info->type); | |
1673 | continue; | |
1674 | } | |
1675 | ||
1676 | subdev = v4l2_i2c_new_subdev_board(&isp->v4l2_dev, adapter, | |
1677 | board_info->board_info, NULL); | |
1678 | if (subdev == NULL) { | |
1679 | printk(KERN_ERR "%s: Unable to register subdev %s\n", | |
1680 | __func__, board_info->board_info->type); | |
1681 | continue; | |
1682 | } | |
1683 | ||
1684 | if (first) | |
1685 | sensor = subdev; | |
1686 | } | |
1687 | ||
1688 | return sensor; | |
1689 | } | |
1690 | ||
1691 | static int isp_register_entities(struct isp_device *isp) | |
1692 | { | |
1693 | struct isp_platform_data *pdata = isp->pdata; | |
1694 | struct isp_v4l2_subdevs_group *subdevs; | |
1695 | int ret; | |
1696 | ||
1697 | isp->media_dev.dev = isp->dev; | |
1698 | strlcpy(isp->media_dev.model, "TI OMAP3 ISP", | |
1699 | sizeof(isp->media_dev.model)); | |
1700 | isp->media_dev.link_notify = isp_pipeline_link_notify; | |
1701 | ret = media_device_register(&isp->media_dev); | |
1702 | if (ret < 0) { | |
1703 | printk(KERN_ERR "%s: Media device registration failed (%d)\n", | |
1704 | __func__, ret); | |
1705 | return ret; | |
1706 | } | |
1707 | ||
1708 | isp->v4l2_dev.mdev = &isp->media_dev; | |
1709 | ret = v4l2_device_register(isp->dev, &isp->v4l2_dev); | |
1710 | if (ret < 0) { | |
1711 | printk(KERN_ERR "%s: V4L2 device registration failed (%d)\n", | |
1712 | __func__, ret); | |
1713 | goto done; | |
1714 | } | |
1715 | ||
1716 | /* Register internal entities */ | |
1717 | ret = omap3isp_ccp2_register_entities(&isp->isp_ccp2, &isp->v4l2_dev); | |
1718 | if (ret < 0) | |
1719 | goto done; | |
1720 | ||
1721 | ret = omap3isp_csi2_register_entities(&isp->isp_csi2a, &isp->v4l2_dev); | |
1722 | if (ret < 0) | |
1723 | goto done; | |
1724 | ||
1725 | ret = omap3isp_ccdc_register_entities(&isp->isp_ccdc, &isp->v4l2_dev); | |
1726 | if (ret < 0) | |
1727 | goto done; | |
1728 | ||
1729 | ret = omap3isp_preview_register_entities(&isp->isp_prev, | |
1730 | &isp->v4l2_dev); | |
1731 | if (ret < 0) | |
1732 | goto done; | |
1733 | ||
1734 | ret = omap3isp_resizer_register_entities(&isp->isp_res, &isp->v4l2_dev); | |
1735 | if (ret < 0) | |
1736 | goto done; | |
1737 | ||
1738 | ret = omap3isp_stat_register_entities(&isp->isp_aewb, &isp->v4l2_dev); | |
1739 | if (ret < 0) | |
1740 | goto done; | |
1741 | ||
1742 | ret = omap3isp_stat_register_entities(&isp->isp_af, &isp->v4l2_dev); | |
1743 | if (ret < 0) | |
1744 | goto done; | |
1745 | ||
1746 | ret = omap3isp_stat_register_entities(&isp->isp_hist, &isp->v4l2_dev); | |
1747 | if (ret < 0) | |
1748 | goto done; | |
1749 | ||
1750 | /* Register external entities */ | |
1751 | for (subdevs = pdata->subdevs; subdevs->subdevs; ++subdevs) { | |
1752 | struct v4l2_subdev *sensor; | |
1753 | struct media_entity *input; | |
1754 | unsigned int flags; | |
1755 | unsigned int pad; | |
1756 | ||
1757 | sensor = isp_register_subdev_group(isp, subdevs->subdevs); | |
1758 | if (sensor == NULL) | |
1759 | continue; | |
1760 | ||
1761 | sensor->host_priv = subdevs; | |
1762 | ||
1763 | /* Connect the sensor to the correct interface module. Parallel | |
1764 | * sensors are connected directly to the CCDC, while serial | |
1765 | * sensors are connected to the CSI2a, CCP2b or CSI2c receiver | |
1766 | * through CSIPHY1 or CSIPHY2. | |
1767 | */ | |
1768 | switch (subdevs->interface) { | |
1769 | case ISP_INTERFACE_PARALLEL: | |
1770 | input = &isp->isp_ccdc.subdev.entity; | |
1771 | pad = CCDC_PAD_SINK; | |
1772 | flags = 0; | |
1773 | break; | |
1774 | ||
1775 | case ISP_INTERFACE_CSI2A_PHY2: | |
1776 | input = &isp->isp_csi2a.subdev.entity; | |
1777 | pad = CSI2_PAD_SINK; | |
1778 | flags = MEDIA_LNK_FL_IMMUTABLE | |
1779 | | MEDIA_LNK_FL_ENABLED; | |
1780 | break; | |
1781 | ||
1782 | case ISP_INTERFACE_CCP2B_PHY1: | |
1783 | case ISP_INTERFACE_CCP2B_PHY2: | |
1784 | input = &isp->isp_ccp2.subdev.entity; | |
1785 | pad = CCP2_PAD_SINK; | |
1786 | flags = 0; | |
1787 | break; | |
1788 | ||
1789 | case ISP_INTERFACE_CSI2C_PHY1: | |
1790 | input = &isp->isp_csi2c.subdev.entity; | |
1791 | pad = CSI2_PAD_SINK; | |
1792 | flags = MEDIA_LNK_FL_IMMUTABLE | |
1793 | | MEDIA_LNK_FL_ENABLED; | |
1794 | break; | |
1795 | ||
1796 | default: | |
1797 | printk(KERN_ERR "%s: invalid interface type %u\n", | |
1798 | __func__, subdevs->interface); | |
1799 | ret = -EINVAL; | |
1800 | goto done; | |
1801 | } | |
1802 | ||
1803 | ret = media_entity_create_link(&sensor->entity, 0, input, pad, | |
1804 | flags); | |
1805 | if (ret < 0) | |
1806 | goto done; | |
1807 | } | |
1808 | ||
1809 | ret = v4l2_device_register_subdev_nodes(&isp->v4l2_dev); | |
1810 | ||
1811 | done: | |
1812 | if (ret < 0) | |
1813 | isp_unregister_entities(isp); | |
1814 | ||
1815 | return ret; | |
1816 | } | |
1817 | ||
1818 | static void isp_cleanup_modules(struct isp_device *isp) | |
1819 | { | |
1820 | omap3isp_h3a_aewb_cleanup(isp); | |
1821 | omap3isp_h3a_af_cleanup(isp); | |
1822 | omap3isp_hist_cleanup(isp); | |
1823 | omap3isp_resizer_cleanup(isp); | |
1824 | omap3isp_preview_cleanup(isp); | |
1825 | omap3isp_ccdc_cleanup(isp); | |
1826 | omap3isp_ccp2_cleanup(isp); | |
1827 | omap3isp_csi2_cleanup(isp); | |
1828 | } | |
1829 | ||
1830 | static int isp_initialize_modules(struct isp_device *isp) | |
1831 | { | |
1832 | int ret; | |
1833 | ||
1834 | ret = omap3isp_csiphy_init(isp); | |
1835 | if (ret < 0) { | |
1836 | dev_err(isp->dev, "CSI PHY initialization failed\n"); | |
1837 | goto error_csiphy; | |
1838 | } | |
1839 | ||
1840 | ret = omap3isp_csi2_init(isp); | |
1841 | if (ret < 0) { | |
1842 | dev_err(isp->dev, "CSI2 initialization failed\n"); | |
1843 | goto error_csi2; | |
1844 | } | |
1845 | ||
1846 | ret = omap3isp_ccp2_init(isp); | |
1847 | if (ret < 0) { | |
1848 | dev_err(isp->dev, "CCP2 initialization failed\n"); | |
1849 | goto error_ccp2; | |
1850 | } | |
1851 | ||
1852 | ret = omap3isp_ccdc_init(isp); | |
1853 | if (ret < 0) { | |
1854 | dev_err(isp->dev, "CCDC initialization failed\n"); | |
1855 | goto error_ccdc; | |
1856 | } | |
1857 | ||
1858 | ret = omap3isp_preview_init(isp); | |
1859 | if (ret < 0) { | |
1860 | dev_err(isp->dev, "Preview initialization failed\n"); | |
1861 | goto error_preview; | |
1862 | } | |
1863 | ||
1864 | ret = omap3isp_resizer_init(isp); | |
1865 | if (ret < 0) { | |
1866 | dev_err(isp->dev, "Resizer initialization failed\n"); | |
1867 | goto error_resizer; | |
1868 | } | |
1869 | ||
1870 | ret = omap3isp_hist_init(isp); | |
1871 | if (ret < 0) { | |
1872 | dev_err(isp->dev, "Histogram initialization failed\n"); | |
1873 | goto error_hist; | |
1874 | } | |
1875 | ||
1876 | ret = omap3isp_h3a_aewb_init(isp); | |
1877 | if (ret < 0) { | |
1878 | dev_err(isp->dev, "H3A AEWB initialization failed\n"); | |
1879 | goto error_h3a_aewb; | |
1880 | } | |
1881 | ||
1882 | ret = omap3isp_h3a_af_init(isp); | |
1883 | if (ret < 0) { | |
1884 | dev_err(isp->dev, "H3A AF initialization failed\n"); | |
1885 | goto error_h3a_af; | |
1886 | } | |
1887 | ||
1888 | /* Connect the submodules. */ | |
1889 | ret = media_entity_create_link( | |
1890 | &isp->isp_csi2a.subdev.entity, CSI2_PAD_SOURCE, | |
1891 | &isp->isp_ccdc.subdev.entity, CCDC_PAD_SINK, 0); | |
1892 | if (ret < 0) | |
1893 | goto error_link; | |
1894 | ||
1895 | ret = media_entity_create_link( | |
1896 | &isp->isp_ccp2.subdev.entity, CCP2_PAD_SOURCE, | |
1897 | &isp->isp_ccdc.subdev.entity, CCDC_PAD_SINK, 0); | |
1898 | if (ret < 0) | |
1899 | goto error_link; | |
1900 | ||
1901 | ret = media_entity_create_link( | |
1902 | &isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_VP, | |
1903 | &isp->isp_prev.subdev.entity, PREV_PAD_SINK, 0); | |
1904 | if (ret < 0) | |
1905 | goto error_link; | |
1906 | ||
1907 | ret = media_entity_create_link( | |
1908 | &isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_OF, | |
1909 | &isp->isp_res.subdev.entity, RESZ_PAD_SINK, 0); | |
1910 | if (ret < 0) | |
1911 | goto error_link; | |
1912 | ||
1913 | ret = media_entity_create_link( | |
1914 | &isp->isp_prev.subdev.entity, PREV_PAD_SOURCE, | |
1915 | &isp->isp_res.subdev.entity, RESZ_PAD_SINK, 0); | |
1916 | if (ret < 0) | |
1917 | goto error_link; | |
1918 | ||
1919 | ret = media_entity_create_link( | |
1920 | &isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_VP, | |
1921 | &isp->isp_aewb.subdev.entity, 0, | |
1922 | MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE); | |
1923 | if (ret < 0) | |
1924 | goto error_link; | |
1925 | ||
1926 | ret = media_entity_create_link( | |
1927 | &isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_VP, | |
1928 | &isp->isp_af.subdev.entity, 0, | |
1929 | MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE); | |
1930 | if (ret < 0) | |
1931 | goto error_link; | |
1932 | ||
1933 | ret = media_entity_create_link( | |
1934 | &isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_VP, | |
1935 | &isp->isp_hist.subdev.entity, 0, | |
1936 | MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE); | |
1937 | if (ret < 0) | |
1938 | goto error_link; | |
1939 | ||
1940 | return 0; | |
1941 | ||
1942 | error_link: | |
1943 | omap3isp_h3a_af_cleanup(isp); | |
1944 | error_h3a_af: | |
1945 | omap3isp_h3a_aewb_cleanup(isp); | |
1946 | error_h3a_aewb: | |
1947 | omap3isp_hist_cleanup(isp); | |
1948 | error_hist: | |
1949 | omap3isp_resizer_cleanup(isp); | |
1950 | error_resizer: | |
1951 | omap3isp_preview_cleanup(isp); | |
1952 | error_preview: | |
1953 | omap3isp_ccdc_cleanup(isp); | |
1954 | error_ccdc: | |
1955 | omap3isp_ccp2_cleanup(isp); | |
1956 | error_ccp2: | |
1957 | omap3isp_csi2_cleanup(isp); | |
1958 | error_csi2: | |
1959 | error_csiphy: | |
1960 | return ret; | |
1961 | } | |
1962 | ||
1963 | /* | |
1964 | * isp_remove - Remove ISP platform device | |
1965 | * @pdev: Pointer to ISP platform device | |
1966 | * | |
1967 | * Always returns 0. | |
1968 | */ | |
1969 | static int isp_remove(struct platform_device *pdev) | |
1970 | { | |
1971 | struct isp_device *isp = platform_get_drvdata(pdev); | |
1972 | int i; | |
1973 | ||
1974 | isp_unregister_entities(isp); | |
1975 | isp_cleanup_modules(isp); | |
1976 | ||
1977 | omap3isp_get(isp); | |
1978 | iommu_put(isp->iommu); | |
1979 | omap3isp_put(isp); | |
1980 | ||
1981 | free_irq(isp->irq_num, isp); | |
1982 | isp_put_clocks(isp); | |
1983 | ||
1984 | for (i = 0; i < OMAP3_ISP_IOMEM_LAST; i++) { | |
1985 | if (isp->mmio_base[i]) { | |
1986 | iounmap(isp->mmio_base[i]); | |
1987 | isp->mmio_base[i] = NULL; | |
1988 | } | |
1989 | ||
1990 | if (isp->mmio_base_phys[i]) { | |
1991 | release_mem_region(isp->mmio_base_phys[i], | |
1992 | isp->mmio_size[i]); | |
1993 | isp->mmio_base_phys[i] = 0; | |
1994 | } | |
1995 | } | |
1996 | ||
1997 | regulator_put(isp->isp_csiphy1.vdd); | |
1998 | regulator_put(isp->isp_csiphy2.vdd); | |
1999 | kfree(isp); | |
2000 | ||
2001 | return 0; | |
2002 | } | |
2003 | ||
2004 | static int isp_map_mem_resource(struct platform_device *pdev, | |
2005 | struct isp_device *isp, | |
2006 | enum isp_mem_resources res) | |
2007 | { | |
2008 | struct resource *mem; | |
2009 | ||
2010 | /* request the mem region for the camera registers */ | |
2011 | ||
2012 | mem = platform_get_resource(pdev, IORESOURCE_MEM, res); | |
2013 | if (!mem) { | |
2014 | dev_err(isp->dev, "no mem resource?\n"); | |
2015 | return -ENODEV; | |
2016 | } | |
2017 | ||
2018 | if (!request_mem_region(mem->start, resource_size(mem), pdev->name)) { | |
2019 | dev_err(isp->dev, | |
2020 | "cannot reserve camera register I/O region\n"); | |
2021 | return -ENODEV; | |
2022 | } | |
2023 | isp->mmio_base_phys[res] = mem->start; | |
2024 | isp->mmio_size[res] = resource_size(mem); | |
2025 | ||
2026 | /* map the region */ | |
2027 | isp->mmio_base[res] = ioremap_nocache(isp->mmio_base_phys[res], | |
2028 | isp->mmio_size[res]); | |
2029 | if (!isp->mmio_base[res]) { | |
2030 | dev_err(isp->dev, "cannot map camera register I/O region\n"); | |
2031 | return -ENODEV; | |
2032 | } | |
2033 | ||
2034 | return 0; | |
2035 | } | |
2036 | ||
2037 | /* | |
2038 | * isp_probe - Probe ISP platform device | |
2039 | * @pdev: Pointer to ISP platform device | |
2040 | * | |
2041 | * Returns 0 if successful, | |
2042 | * -ENOMEM if no memory available, | |
2043 | * -ENODEV if no platform device resources found | |
2044 | * or no space for remapping registers, | |
2045 | * -EINVAL if couldn't install ISR, | |
2046 | * or clk_get return error value. | |
2047 | */ | |
2048 | static int isp_probe(struct platform_device *pdev) | |
2049 | { | |
2050 | struct isp_platform_data *pdata = pdev->dev.platform_data; | |
2051 | struct isp_device *isp; | |
2052 | int ret; | |
2053 | int i, m; | |
2054 | ||
2055 | if (pdata == NULL) | |
2056 | return -EINVAL; | |
2057 | ||
2058 | isp = kzalloc(sizeof(*isp), GFP_KERNEL); | |
2059 | if (!isp) { | |
2060 | dev_err(&pdev->dev, "could not allocate memory\n"); | |
2061 | return -ENOMEM; | |
2062 | } | |
2063 | ||
2064 | isp->autoidle = autoidle; | |
2065 | isp->platform_cb.set_xclk = isp_set_xclk; | |
2066 | isp->platform_cb.set_pixel_clock = isp_set_pixel_clock; | |
2067 | ||
2068 | mutex_init(&isp->isp_mutex); | |
2069 | spin_lock_init(&isp->stat_lock); | |
2070 | ||
2071 | isp->dev = &pdev->dev; | |
2072 | isp->pdata = pdata; | |
2073 | isp->ref_count = 0; | |
2074 | ||
2075 | isp->raw_dmamask = DMA_BIT_MASK(32); | |
2076 | isp->dev->dma_mask = &isp->raw_dmamask; | |
2077 | isp->dev->coherent_dma_mask = DMA_BIT_MASK(32); | |
2078 | ||
2079 | platform_set_drvdata(pdev, isp); | |
2080 | ||
2081 | /* Regulators */ | |
2082 | isp->isp_csiphy1.vdd = regulator_get(&pdev->dev, "VDD_CSIPHY1"); | |
2083 | isp->isp_csiphy2.vdd = regulator_get(&pdev->dev, "VDD_CSIPHY2"); | |
2084 | ||
2085 | /* Clocks */ | |
2086 | ret = isp_map_mem_resource(pdev, isp, OMAP3_ISP_IOMEM_MAIN); | |
2087 | if (ret < 0) | |
2088 | goto error; | |
2089 | ||
2090 | ret = isp_get_clocks(isp); | |
2091 | if (ret < 0) | |
2092 | goto error; | |
2093 | ||
2094 | if (omap3isp_get(isp) == NULL) | |
2095 | goto error; | |
2096 | ||
2097 | ret = isp_reset(isp); | |
2098 | if (ret < 0) | |
2099 | goto error_isp; | |
2100 | ||
2101 | /* Memory resources */ | |
2102 | isp->revision = isp_reg_readl(isp, OMAP3_ISP_IOMEM_MAIN, ISP_REVISION); | |
2103 | dev_info(isp->dev, "Revision %d.%d found\n", | |
2104 | (isp->revision & 0xf0) >> 4, isp->revision & 0x0f); | |
2105 | ||
2106 | for (m = 0; m < ARRAY_SIZE(isp_res_maps); m++) | |
2107 | if (isp->revision == isp_res_maps[m].isp_rev) | |
2108 | break; | |
2109 | ||
2110 | if (m == ARRAY_SIZE(isp_res_maps)) { | |
2111 | dev_err(isp->dev, "No resource map found for ISP rev %d.%d\n", | |
2112 | (isp->revision & 0xf0) >> 4, isp->revision & 0xf); | |
2113 | ret = -ENODEV; | |
2114 | goto error_isp; | |
2115 | } | |
2116 | ||
2117 | for (i = 1; i < OMAP3_ISP_IOMEM_LAST; i++) { | |
2118 | if (isp_res_maps[m].map & 1 << i) { | |
2119 | ret = isp_map_mem_resource(pdev, isp, i); | |
2120 | if (ret) | |
2121 | goto error_isp; | |
2122 | } | |
2123 | } | |
2124 | ||
2125 | /* IOMMU */ | |
2126 | isp->iommu = iommu_get("isp"); | |
2127 | if (IS_ERR_OR_NULL(isp->iommu)) { | |
2128 | isp->iommu = NULL; | |
2129 | ret = -ENODEV; | |
2130 | goto error_isp; | |
2131 | } | |
2132 | ||
2133 | /* Interrupt */ | |
2134 | isp->irq_num = platform_get_irq(pdev, 0); | |
2135 | if (isp->irq_num <= 0) { | |
2136 | dev_err(isp->dev, "No IRQ resource\n"); | |
2137 | ret = -ENODEV; | |
2138 | goto error_isp; | |
2139 | } | |
2140 | ||
2141 | if (request_irq(isp->irq_num, isp_isr, IRQF_SHARED, "OMAP3 ISP", isp)) { | |
2142 | dev_err(isp->dev, "Unable to request IRQ\n"); | |
2143 | ret = -EINVAL; | |
2144 | goto error_isp; | |
2145 | } | |
2146 | ||
2147 | /* Entities */ | |
2148 | ret = isp_initialize_modules(isp); | |
2149 | if (ret < 0) | |
2150 | goto error_irq; | |
2151 | ||
2152 | ret = isp_register_entities(isp); | |
2153 | if (ret < 0) | |
2154 | goto error_modules; | |
2155 | ||
2156 | isp_power_settings(isp, 1); | |
2157 | omap3isp_put(isp); | |
2158 | ||
2159 | return 0; | |
2160 | ||
2161 | error_modules: | |
2162 | isp_cleanup_modules(isp); | |
2163 | error_irq: | |
2164 | free_irq(isp->irq_num, isp); | |
2165 | error_isp: | |
2166 | iommu_put(isp->iommu); | |
2167 | omap3isp_put(isp); | |
2168 | error: | |
2169 | isp_put_clocks(isp); | |
2170 | ||
2171 | for (i = 0; i < OMAP3_ISP_IOMEM_LAST; i++) { | |
2172 | if (isp->mmio_base[i]) { | |
2173 | iounmap(isp->mmio_base[i]); | |
2174 | isp->mmio_base[i] = NULL; | |
2175 | } | |
2176 | ||
2177 | if (isp->mmio_base_phys[i]) { | |
2178 | release_mem_region(isp->mmio_base_phys[i], | |
2179 | isp->mmio_size[i]); | |
2180 | isp->mmio_base_phys[i] = 0; | |
2181 | } | |
2182 | } | |
2183 | regulator_put(isp->isp_csiphy2.vdd); | |
2184 | regulator_put(isp->isp_csiphy1.vdd); | |
2185 | platform_set_drvdata(pdev, NULL); | |
2186 | kfree(isp); | |
2187 | ||
2188 | return ret; | |
2189 | } | |
2190 | ||
2191 | static const struct dev_pm_ops omap3isp_pm_ops = { | |
2192 | .prepare = isp_pm_prepare, | |
2193 | .suspend = isp_pm_suspend, | |
2194 | .resume = isp_pm_resume, | |
2195 | .complete = isp_pm_complete, | |
2196 | }; | |
2197 | ||
2198 | static struct platform_device_id omap3isp_id_table[] = { | |
2199 | { "omap3isp", 0 }, | |
2200 | { }, | |
2201 | }; | |
2202 | MODULE_DEVICE_TABLE(platform, omap3isp_id_table); | |
2203 | ||
2204 | static struct platform_driver omap3isp_driver = { | |
2205 | .probe = isp_probe, | |
2206 | .remove = isp_remove, | |
2207 | .id_table = omap3isp_id_table, | |
2208 | .driver = { | |
2209 | .owner = THIS_MODULE, | |
2210 | .name = "omap3isp", | |
2211 | .pm = &omap3isp_pm_ops, | |
2212 | }, | |
2213 | }; | |
2214 | ||
2215 | /* | |
2216 | * isp_init - ISP module initialization. | |
2217 | */ | |
2218 | static int __init isp_init(void) | |
2219 | { | |
2220 | return platform_driver_register(&omap3isp_driver); | |
2221 | } | |
2222 | ||
2223 | /* | |
2224 | * isp_cleanup - ISP module cleanup. | |
2225 | */ | |
2226 | static void __exit isp_cleanup(void) | |
2227 | { | |
2228 | platform_driver_unregister(&omap3isp_driver); | |
2229 | } | |
2230 | ||
2231 | module_init(isp_init); | |
2232 | module_exit(isp_cleanup); | |
2233 | ||
2234 | MODULE_AUTHOR("Nokia Corporation"); | |
2235 | MODULE_DESCRIPTION("TI OMAP3 ISP driver"); | |
2236 | MODULE_LICENSE("GPL"); |