1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright (C) 2009 Texas Instruments.
5 * common vpss system module platform driver for all video drivers.
7 #include <linux/module.h>
8 #include <linux/platform_device.h>
10 #include <linux/pm_runtime.h>
11 #include <linux/err.h>
13 #include <media/davinci/vpss.h>
15 MODULE_LICENSE("GPL");
16 MODULE_DESCRIPTION("VPSS Driver");
17 MODULE_AUTHOR("Texas Instruments");
20 #define DM644X_SBL_PCR_VPSS (4)
22 #define DM355_VPSSBL_INTSEL 0x10
23 #define DM355_VPSSBL_EVTSEL 0x14
24 /* vpss BL register offsets */
25 #define DM355_VPSSBL_CCDCMUX 0x1c
26 /* vpss CLK register offsets */
27 #define DM355_VPSSCLK_CLKCTRL 0x04
28 /* masks and shifts */
29 #define VPSS_HSSISEL_SHIFT 4
31 * VDINT0 - vpss_int0, VDINT1 - vpss_int1, H3A - vpss_int4,
32 * IPIPE_INT1_SDR - vpss_int5
34 #define DM355_VPSSBL_INTSEL_DEFAULT 0xff83ff10
35 /* VENCINT - vpss_int8 */
36 #define DM355_VPSSBL_EVTSEL_DEFAULT 0x4
38 #define DM365_ISP5_PCCR 0x04
39 #define DM365_ISP5_PCCR_BL_CLK_ENABLE BIT(0)
40 #define DM365_ISP5_PCCR_ISIF_CLK_ENABLE BIT(1)
41 #define DM365_ISP5_PCCR_H3A_CLK_ENABLE BIT(2)
42 #define DM365_ISP5_PCCR_RSZ_CLK_ENABLE BIT(3)
43 #define DM365_ISP5_PCCR_IPIPE_CLK_ENABLE BIT(4)
44 #define DM365_ISP5_PCCR_IPIPEIF_CLK_ENABLE BIT(5)
45 #define DM365_ISP5_PCCR_RSV BIT(6)
47 #define DM365_ISP5_BCR 0x08
48 #define DM365_ISP5_BCR_ISIF_OUT_ENABLE BIT(1)
50 #define DM365_ISP5_INTSEL1 0x10
51 #define DM365_ISP5_INTSEL2 0x14
52 #define DM365_ISP5_INTSEL3 0x18
53 #define DM365_ISP5_CCDCMUX 0x20
54 #define DM365_ISP5_PG_FRAME_SIZE 0x28
55 #define DM365_VPBE_CLK_CTRL 0x00
57 #define VPSS_CLK_CTRL 0x01c40044
58 #define VPSS_CLK_CTRL_VENCCLKEN BIT(3)
59 #define VPSS_CLK_CTRL_DACCLKEN BIT(4)
62 * vpss interrupts. VDINT0 - vpss_int0, VDINT1 - vpss_int1,
65 #define DM365_ISP5_INTSEL1_DEFAULT 0x0b1f0100
66 /* AEW - vpss_int6, RSZ_INT_DMA - vpss_int5 */
67 #define DM365_ISP5_INTSEL2_DEFAULT 0x1f0a0f1f
68 /* VENC - vpss_int8 */
69 #define DM365_ISP5_INTSEL3_DEFAULT 0x00000015
71 /* masks and shifts for DM365*/
72 #define DM365_CCDC_PG_VD_POL_SHIFT 0
73 #define DM365_CCDC_PG_HD_POL_SHIFT 1
75 #define CCD_SRC_SEL_MASK (BIT_MASK(5) | BIT_MASK(4))
76 #define CCD_SRC_SEL_SHIFT 4
78 /* Different SoC platforms supported by this driver */
79 enum vpss_platform_type {
86 * vpss operations. Depends on platform. Not all functions are available
87 * on all platforms. The api, first check if a function is available before
88 * invoking it. In the probe, the function ptrs are initialized based on
89 * vpss name. vpss name can be "dm355_vpss", "dm644x_vpss" etc.
93 int (*enable_clock)(enum vpss_clock_sel clock_sel, int en);
94 /* select input to ccdc */
95 void (*select_ccdc_source)(enum vpss_ccdc_source_sel src_sel);
96 /* clear wbl overflow bit */
97 int (*clear_wbl_overflow)(enum vpss_wbl_sel wbl_sel);
98 /* set sync polarity */
99 void (*set_sync_pol)(struct vpss_sync_pol);
100 /* set the PG_FRAME_SIZE register*/
101 void (*set_pg_frame_size)(struct vpss_pg_frame_size);
102 /* check and clear interrupt if occurred */
103 int (*dma_complete_interrupt)(void);
106 /* vpss configuration */
107 struct vpss_oper_config {
108 __iomem void *vpss_regs_base0;
109 __iomem void *vpss_regs_base1;
110 __iomem void *vpss_regs_base2;
111 enum vpss_platform_type platform;
112 spinlock_t vpss_lock;
113 struct vpss_hw_ops hw_ops;
116 static struct vpss_oper_config oper_cfg;
118 /* register access routines */
119 static inline u32 bl_regr(u32 offset)
121 return __raw_readl(oper_cfg.vpss_regs_base0 + offset);
124 static inline void bl_regw(u32 val, u32 offset)
126 __raw_writel(val, oper_cfg.vpss_regs_base0 + offset);
129 static inline u32 vpss_regr(u32 offset)
131 return __raw_readl(oper_cfg.vpss_regs_base1 + offset);
134 static inline void vpss_regw(u32 val, u32 offset)
136 __raw_writel(val, oper_cfg.vpss_regs_base1 + offset);
140 static inline u32 isp5_read(u32 offset)
142 return __raw_readl(oper_cfg.vpss_regs_base0 + offset);
146 static inline void isp5_write(u32 val, u32 offset)
148 __raw_writel(val, oper_cfg.vpss_regs_base0 + offset);
151 static void dm365_select_ccdc_source(enum vpss_ccdc_source_sel src_sel)
153 u32 temp = isp5_read(DM365_ISP5_CCDCMUX) & ~CCD_SRC_SEL_MASK;
155 /* if we are using pattern generator, enable it */
156 if (src_sel == VPSS_PGLPBK || src_sel == VPSS_CCDCPG)
159 temp |= (src_sel << CCD_SRC_SEL_SHIFT);
160 isp5_write(temp, DM365_ISP5_CCDCMUX);
163 static void dm355_select_ccdc_source(enum vpss_ccdc_source_sel src_sel)
165 bl_regw(src_sel << VPSS_HSSISEL_SHIFT, DM355_VPSSBL_CCDCMUX);
168 int vpss_dma_complete_interrupt(void)
170 if (!oper_cfg.hw_ops.dma_complete_interrupt)
172 return oper_cfg.hw_ops.dma_complete_interrupt();
174 EXPORT_SYMBOL(vpss_dma_complete_interrupt);
176 int vpss_select_ccdc_source(enum vpss_ccdc_source_sel src_sel)
178 if (!oper_cfg.hw_ops.select_ccdc_source)
181 oper_cfg.hw_ops.select_ccdc_source(src_sel);
184 EXPORT_SYMBOL(vpss_select_ccdc_source);
186 static int dm644x_clear_wbl_overflow(enum vpss_wbl_sel wbl_sel)
190 if (wbl_sel < VPSS_PCR_AEW_WBL_0 ||
191 wbl_sel > VPSS_PCR_CCDC_WBL_O)
194 /* writing a 0 clear the overflow */
195 mask = ~(mask << wbl_sel);
196 val = bl_regr(DM644X_SBL_PCR_VPSS) & mask;
197 bl_regw(val, DM644X_SBL_PCR_VPSS);
201 void vpss_set_sync_pol(struct vpss_sync_pol sync)
203 if (!oper_cfg.hw_ops.set_sync_pol)
206 oper_cfg.hw_ops.set_sync_pol(sync);
208 EXPORT_SYMBOL(vpss_set_sync_pol);
210 int vpss_clear_wbl_overflow(enum vpss_wbl_sel wbl_sel)
212 if (!oper_cfg.hw_ops.clear_wbl_overflow)
215 return oper_cfg.hw_ops.clear_wbl_overflow(wbl_sel);
217 EXPORT_SYMBOL(vpss_clear_wbl_overflow);
220 * dm355_enable_clock - Enable VPSS Clock
221 * @clock_sel: Clock to be enabled/disabled
222 * @en: enable/disable flag
224 * This is called to enable or disable a vpss clock
226 static int dm355_enable_clock(enum vpss_clock_sel clock_sel, int en)
229 u32 utemp, mask = 0x1, shift = 0;
232 case VPSS_VPBE_CLOCK:
233 /* nothing since lsb */
235 case VPSS_VENC_CLOCK_SEL:
238 case VPSS_CFALD_CLOCK:
244 case VPSS_IPIPE_CLOCK:
247 case VPSS_CCDC_CLOCK:
251 printk(KERN_ERR "dm355_enable_clock: Invalid selector: %d\n",
256 spin_lock_irqsave(&oper_cfg.vpss_lock, flags);
257 utemp = vpss_regr(DM355_VPSSCLK_CLKCTRL);
259 utemp &= ~(mask << shift);
261 utemp |= (mask << shift);
263 vpss_regw(utemp, DM355_VPSSCLK_CLKCTRL);
264 spin_unlock_irqrestore(&oper_cfg.vpss_lock, flags);
268 static int dm365_enable_clock(enum vpss_clock_sel clock_sel, int en)
271 u32 utemp, mask = 0x1, shift = 0, offset = DM365_ISP5_PCCR;
272 u32 (*read)(u32 offset) = isp5_read;
273 void(*write)(u32 val, u32 offset) = isp5_write;
278 case VPSS_CCDC_CLOCK:
287 case VPSS_IPIPE_CLOCK:
290 case VPSS_IPIPEIF_CLOCK:
293 case VPSS_PCLK_INTERNAL:
296 case VPSS_PSYNC_CLOCK_SEL:
299 case VPSS_VPBE_CLOCK:
302 offset = DM365_VPBE_CLK_CTRL;
304 case VPSS_VENC_CLOCK_SEL:
308 offset = DM365_VPBE_CLK_CTRL;
314 offset = DM365_VPBE_CLK_CTRL;
316 case VPSS_FDIF_CLOCK:
320 offset = DM365_VPBE_CLK_CTRL;
322 case VPSS_OSD_CLOCK_SEL:
326 offset = DM365_VPBE_CLK_CTRL;
328 case VPSS_LDC_CLOCK_SEL:
332 offset = DM365_VPBE_CLK_CTRL;
335 printk(KERN_ERR "dm365_enable_clock: Invalid selector: %d\n",
340 spin_lock_irqsave(&oper_cfg.vpss_lock, flags);
341 utemp = read(offset);
344 utemp &= (mask << shift);
346 utemp |= (mask << shift);
348 write(utemp, offset);
349 spin_unlock_irqrestore(&oper_cfg.vpss_lock, flags);
354 int vpss_enable_clock(enum vpss_clock_sel clock_sel, int en)
356 if (!oper_cfg.hw_ops.enable_clock)
359 return oper_cfg.hw_ops.enable_clock(clock_sel, en);
361 EXPORT_SYMBOL(vpss_enable_clock);
363 void dm365_vpss_set_sync_pol(struct vpss_sync_pol sync)
366 val = isp5_read(DM365_ISP5_CCDCMUX);
368 val |= (sync.ccdpg_hdpol << DM365_CCDC_PG_HD_POL_SHIFT);
369 val |= (sync.ccdpg_vdpol << DM365_CCDC_PG_VD_POL_SHIFT);
371 isp5_write(val, DM365_ISP5_CCDCMUX);
373 EXPORT_SYMBOL(dm365_vpss_set_sync_pol);
375 void vpss_set_pg_frame_size(struct vpss_pg_frame_size frame_size)
377 if (!oper_cfg.hw_ops.set_pg_frame_size)
380 oper_cfg.hw_ops.set_pg_frame_size(frame_size);
382 EXPORT_SYMBOL(vpss_set_pg_frame_size);
384 void dm365_vpss_set_pg_frame_size(struct vpss_pg_frame_size frame_size)
386 int current_reg = ((frame_size.hlpfr >> 1) - 1) << 16;
388 current_reg |= (frame_size.pplen - 1);
389 isp5_write(current_reg, DM365_ISP5_PG_FRAME_SIZE);
391 EXPORT_SYMBOL(dm365_vpss_set_pg_frame_size);
393 static int vpss_probe(struct platform_device *pdev)
395 struct resource *res;
398 if (!pdev->dev.platform_data) {
399 dev_err(&pdev->dev, "no platform data\n");
403 platform_name = pdev->dev.platform_data;
404 if (!strcmp(platform_name, "dm355_vpss"))
405 oper_cfg.platform = DM355;
406 else if (!strcmp(platform_name, "dm365_vpss"))
407 oper_cfg.platform = DM365;
408 else if (!strcmp(platform_name, "dm644x_vpss"))
409 oper_cfg.platform = DM644X;
411 dev_err(&pdev->dev, "vpss driver not supported on this platform\n");
415 dev_info(&pdev->dev, "%s vpss probed\n", platform_name);
416 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
418 oper_cfg.vpss_regs_base0 = devm_ioremap_resource(&pdev->dev, res);
419 if (IS_ERR(oper_cfg.vpss_regs_base0))
420 return PTR_ERR(oper_cfg.vpss_regs_base0);
422 if (oper_cfg.platform == DM355 || oper_cfg.platform == DM365) {
423 res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
425 oper_cfg.vpss_regs_base1 = devm_ioremap_resource(&pdev->dev,
427 if (IS_ERR(oper_cfg.vpss_regs_base1))
428 return PTR_ERR(oper_cfg.vpss_regs_base1);
431 if (oper_cfg.platform == DM355) {
432 oper_cfg.hw_ops.enable_clock = dm355_enable_clock;
433 oper_cfg.hw_ops.select_ccdc_source = dm355_select_ccdc_source;
434 /* Setup vpss interrupts */
435 bl_regw(DM355_VPSSBL_INTSEL_DEFAULT, DM355_VPSSBL_INTSEL);
436 bl_regw(DM355_VPSSBL_EVTSEL_DEFAULT, DM355_VPSSBL_EVTSEL);
437 } else if (oper_cfg.platform == DM365) {
438 oper_cfg.hw_ops.enable_clock = dm365_enable_clock;
439 oper_cfg.hw_ops.select_ccdc_source = dm365_select_ccdc_source;
440 /* Setup vpss interrupts */
441 isp5_write((isp5_read(DM365_ISP5_PCCR) |
442 DM365_ISP5_PCCR_BL_CLK_ENABLE |
443 DM365_ISP5_PCCR_ISIF_CLK_ENABLE |
444 DM365_ISP5_PCCR_H3A_CLK_ENABLE |
445 DM365_ISP5_PCCR_RSZ_CLK_ENABLE |
446 DM365_ISP5_PCCR_IPIPE_CLK_ENABLE |
447 DM365_ISP5_PCCR_IPIPEIF_CLK_ENABLE |
448 DM365_ISP5_PCCR_RSV), DM365_ISP5_PCCR);
449 isp5_write((isp5_read(DM365_ISP5_BCR) |
450 DM365_ISP5_BCR_ISIF_OUT_ENABLE), DM365_ISP5_BCR);
451 isp5_write(DM365_ISP5_INTSEL1_DEFAULT, DM365_ISP5_INTSEL1);
452 isp5_write(DM365_ISP5_INTSEL2_DEFAULT, DM365_ISP5_INTSEL2);
453 isp5_write(DM365_ISP5_INTSEL3_DEFAULT, DM365_ISP5_INTSEL3);
455 oper_cfg.hw_ops.clear_wbl_overflow = dm644x_clear_wbl_overflow;
457 pm_runtime_enable(&pdev->dev);
459 pm_runtime_get(&pdev->dev);
461 spin_lock_init(&oper_cfg.vpss_lock);
462 dev_info(&pdev->dev, "%s vpss probe success\n", platform_name);
467 static int vpss_remove(struct platform_device *pdev)
469 pm_runtime_disable(&pdev->dev);
473 static int vpss_suspend(struct device *dev)
479 static int vpss_resume(struct device *dev)
485 static const struct dev_pm_ops vpss_pm_ops = {
486 .suspend = vpss_suspend,
487 .resume = vpss_resume,
490 static struct platform_driver vpss_driver = {
495 .remove = vpss_remove,
499 static void vpss_exit(void)
501 platform_driver_unregister(&vpss_driver);
502 iounmap(oper_cfg.vpss_regs_base2);
503 release_mem_region(VPSS_CLK_CTRL, 4);
506 static int __init vpss_init(void)
510 if (!request_mem_region(VPSS_CLK_CTRL, 4, "vpss_clock_control"))
513 oper_cfg.vpss_regs_base2 = ioremap(VPSS_CLK_CTRL, 4);
514 if (unlikely(!oper_cfg.vpss_regs_base2)) {
519 writel(VPSS_CLK_CTRL_VENCCLKEN |
520 VPSS_CLK_CTRL_DACCLKEN, oper_cfg.vpss_regs_base2);
522 ret = platform_driver_register(&vpss_driver);
524 goto err_pd_register;
529 iounmap(oper_cfg.vpss_regs_base2);
531 release_mem_region(VPSS_CLK_CTRL, 4);
534 subsys_initcall(vpss_init);
535 module_exit(vpss_exit);