Commit ab88bd2b6a160310953a230d4a4c334ea6a65d3b
Committed by
Simon Glass
1 parent
c0a2b086b2
Exists in
smarc_8mq_lf_v2020.04
and in
11 other branches
misc: Add IHS FPGA driver
Add a driver for gdsys IHS (Integrated Hardware Systems) FPGAs, which supports initialization of the FPGA, as well as information gathering. Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Mario Six <mario.six@gdsys.cc>
Showing 6 changed files with 964 additions and 0 deletions Side-by-side Diff
Documentation/devicetree/bindings/misc/gdsys,iocon_fpga.txt
1 | +gdsys IHS FPGA for CON devices | |
2 | + | |
3 | +The gdsys IHS FPGA is the main FPGA on gdsys CON devices. This driver provides | |
4 | +support for enabling and starting the FPGA, as well as verifying working bus | |
5 | +communication. | |
6 | + | |
7 | +Required properties: | |
8 | +- compatible: must be "gdsys,iocon_fpga" | |
9 | +- reset-gpios: List of GPIOs controlling the FPGA's reset | |
10 | +- done-gpios: List of GPIOs notifying whether the FPGA's reconfiguration is | |
11 | + done | |
12 | + | |
13 | +Example: | |
14 | + | |
15 | +FPGA0 { | |
16 | + compatible = "gdsys,iocon_fpga"; | |
17 | + reset-gpios = <&PPCPCA 26 0>; | |
18 | + done-gpios = <&GPIO_VB0 19 0>; | |
19 | +}; |
Documentation/devicetree/bindings/misc/gdsys,iocpu_fpga.txt
1 | +gdsys IHS FPGA for CPU devices | |
2 | + | |
3 | +The gdsys IHS FPGA is the main FPGA on gdsys CPU devices. This driver provides | |
4 | +support for enabling and starting the FPGA, as well as verifying working bus | |
5 | +communication. | |
6 | + | |
7 | +Required properties: | |
8 | +- compatible: must be "gdsys,iocpu_fpga" | |
9 | +- reset-gpios: List of GPIOs controlling the FPGA's reset | |
10 | +- done-gpios: List of GPIOs notifying whether the FPGA's reconfiguration is | |
11 | + done | |
12 | + | |
13 | +Example: | |
14 | + | |
15 | +FPGA0 { | |
16 | + compatible = "gdsys,iocpu_fpga"; | |
17 | + reset-gpios = <&PPCPCA 26 0>; | |
18 | + done-gpios = <&GPIO_VB0 19 0>; | |
19 | +}; |
drivers/misc/Kconfig
... | ... | @@ -320,5 +320,14 @@ |
320 | 320 | IHS (Integrated Hardware Systems) FPGA, which holds all devices whose |
321 | 321 | register maps are contained within the FPGA's register map. |
322 | 322 | |
323 | +config IHS_FPGA | |
324 | + bool "Enable IHS FPGA driver" | |
325 | + depends on MISC | |
326 | + help | |
327 | + Support IHS (Integrated Hardware Systems) FPGA, the main FPGAs on | |
328 | + gdsys devices, which supply the majority of the functionality offered | |
329 | + by the devices. This driver supports both CON and CPU variants of the | |
330 | + devices, depending on the device tree entry. | |
331 | + | |
323 | 332 | endmenu |
drivers/misc/Makefile
... | ... | @@ -37,6 +37,7 @@ |
37 | 37 | obj-$(CONFIG_GDSYS_RXAUI_CTRL) += gdsys_rxaui_ctrl.o |
38 | 38 | obj-$(CONFIG_GDSYS_SOC) += gdsys_soc.o |
39 | 39 | obj-$(CONFIG_$(SPL_)I2C_EEPROM) += i2c_eeprom.o |
40 | +obj-$(CONFIG_IHS_FPGA) += ihs_fpga.o | |
40 | 41 | obj-$(CONFIG_IMX8) += imx8/ |
41 | 42 | obj-$(CONFIG_LED_STATUS) += status_led.o |
42 | 43 | obj-$(CONFIG_LED_STATUS_GPIO) += gpio_led.o |
drivers/misc/ihs_fpga.c
1 | +// SPDX-License-Identifier: GPL-2.0+ | |
2 | +/* | |
3 | + * (C) Copyright 2017 | |
4 | + * Mario Six, Guntermann & Drunck GmbH, mario.six@gdsys.cc | |
5 | + * | |
6 | + * based on the ioep-fpga driver, which is | |
7 | + * | |
8 | + * (C) Copyright 2014 | |
9 | + * Dirk Eibach, Guntermann & Drunck GmbH, eibach@gdsys.de | |
10 | + */ | |
11 | + | |
12 | +#include <common.h> | |
13 | +#include <dm.h> | |
14 | +#include <regmap.h> | |
15 | +#include <asm/gpio.h> | |
16 | + | |
17 | +#include "ihs_fpga.h" | |
18 | + | |
19 | +/** | |
20 | + * struct ihs_fpga_priv - Private data structure for IHS FPGA driver | |
21 | + * @map: Register map for the FPGA's own register space | |
22 | + * @reset_gpio: GPIO to start FPGA reconfiguration | |
23 | + * @done_gpio: GPOI to read the 'ready' status of the FPGA | |
24 | + */ | |
25 | +struct ihs_fpga_priv { | |
26 | + struct regmap *map; | |
27 | + struct gpio_desc reset_gpio; | |
28 | + struct gpio_desc done_gpio; | |
29 | +}; | |
30 | + | |
31 | +/* Test pattern for reflection test */ | |
32 | +const u16 REFLECTION_TESTPATTERN = 0xdead; | |
33 | +/* Delay (in ms) for each round in the reflection test */ | |
34 | +const uint REFLECTION_TEST_DELAY = 100; | |
35 | +/* Maximum number of rounds in the reflection test */ | |
36 | +const uint REFLECTION_TEST_ROUNDS = 5; | |
37 | +/* Delay (in ms) for each round waiting for the FPGA's done GPIO */ | |
38 | +const uint FPGA_DONE_WAIT_DELAY = 100; | |
39 | +/* Maximum number of rounds for waiting for the FPGA's done GPIO */ | |
40 | +const uint FPGA_DONE_WAIT_ROUND = 5; | |
41 | + | |
42 | +/** | |
43 | + * enum pcb_video_type - Video type of the PCB | |
44 | + * @PCB_DVI_SL: Video type is DVI single-link | |
45 | + * @PCB_DP_165MPIX: Video type is DisplayPort (165Mpix) | |
46 | + * @PCB_DP_300MPIX: Video type is DisplayPort (300Mpix) | |
47 | + * @PCB_HDMI: Video type is HDMI | |
48 | + * @PCB_DP_1_2: Video type is DisplayPort 1.2 | |
49 | + * @PCB_HDMI_2_0: Video type is HDMI 2.0 | |
50 | + */ | |
51 | +enum pcb_video_type { | |
52 | + PCB_DVI_SL, | |
53 | + PCB_DP_165MPIX, | |
54 | + PCB_DP_300MPIX, | |
55 | + PCB_HDMI, | |
56 | + PCB_DP_1_2, | |
57 | + PCB_HDMI_2_0, | |
58 | +}; | |
59 | + | |
60 | +/** | |
61 | + * enum pcb_transmission_type - Transmission type of the PCB | |
62 | + * @PCB_CAT_1G: Transmission type is 1G Ethernet | |
63 | + * @PCB_FIBER_3G: Transmission type is 3G Fiber | |
64 | + * @PCB_CAT_10G: Transmission type is 10G Ethernet | |
65 | + * @PCB_FIBER_10G: Transmission type is 10G Fiber | |
66 | + */ | |
67 | +enum pcb_transmission_type { | |
68 | + PCB_CAT_1G, | |
69 | + PCB_FIBER_3G, | |
70 | + PCB_CAT_10G, | |
71 | + PCB_FIBER_10G, | |
72 | +}; | |
73 | + | |
74 | +/** | |
75 | + * enum carrier_speed - Speed of the FPGA's carrier | |
76 | + * @CARRIER_SPEED_1G: The carrier speed is 1G | |
77 | + * @CARRIER_SPEED_2_5G: The carrier speed is 2.5G | |
78 | + * @CARRIER_SPEED_3G: The carrier speed is 3G | |
79 | + * @CARRIER_SPEED_10G: The carrier speed is 10G | |
80 | + */ | |
81 | +enum carrier_speed { | |
82 | + CARRIER_SPEED_1G, | |
83 | + CARRIER_SPEED_3G, | |
84 | + CARRIER_SPEED_2_5G = CARRIER_SPEED_3G, | |
85 | + CARRIER_SPEED_10G, | |
86 | +}; | |
87 | + | |
88 | +/** | |
89 | + * enum ram_config - FPGA's RAM configuration | |
90 | + * @RAM_DDR2_32BIT_295MBPS: DDR2 32 bit at 295Mb/s | |
91 | + * @RAM_DDR3_32BIT_590MBPS: DDR3 32 bit at 590Mb/s | |
92 | + * @RAM_DDR3_48BIT_590MBPS: DDR3 48 bit at 590Mb/s | |
93 | + * @RAM_DDR3_64BIT_1800MBPS: DDR3 64 bit at 1800Mb/s | |
94 | + * @RAM_DDR3_48BIT_1800MBPS: DDR3 48 bit at 1800Mb/s | |
95 | + */ | |
96 | +enum ram_config { | |
97 | + RAM_DDR2_32BIT_295MBPS, | |
98 | + RAM_DDR3_32BIT_590MBPS, | |
99 | + RAM_DDR3_48BIT_590MBPS, | |
100 | + RAM_DDR3_64BIT_1800MBPS, | |
101 | + RAM_DDR3_48BIT_1800MBPS, | |
102 | +}; | |
103 | + | |
104 | +/** | |
105 | + * enum sysclock - Speed of the FPGA's system clock | |
106 | + * @SYSCLK_147456: System clock is 147.456 MHz | |
107 | + */ | |
108 | +enum sysclock { | |
109 | + SYSCLK_147456, | |
110 | +}; | |
111 | + | |
112 | +/** | |
113 | + * struct fpga_versions - Data read from the versions register | |
114 | + * @video_channel: Is the FPGA for a video channel (true) or main | |
115 | + * channel (false) device? | |
116 | + * @con_side: Is the FPGA for a CON (true) or a CPU (false) device? | |
117 | + * @pcb_video_type: Defines for whch video type the FPGA is configured | |
118 | + * @pcb_transmission_type: Defines for which transmission type the FPGA is | |
119 | + * configured | |
120 | + * @hw_version: Hardware version of the FPGA | |
121 | + */ | |
122 | +struct fpga_versions { | |
123 | + bool video_channel; | |
124 | + bool con_side; | |
125 | + enum pcb_video_type pcb_video_type; | |
126 | + enum pcb_transmission_type pcb_transmission_type; | |
127 | + unsigned int hw_version; | |
128 | +}; | |
129 | + | |
130 | +/** | |
131 | + * struct fpga_features - Data read from the features register | |
132 | + * @video_channels: Number of video channels supported | |
133 | + * @carriers: Number of carrier channels supported | |
134 | + * @carrier_speed: Speed of carriers | |
135 | + * @ram_config: RAM configuration of FPGA | |
136 | + * @sysclock: System clock speed of FPGA | |
137 | + * @pcm_tx: Support for PCM transmission | |
138 | + * @pcm_rx: Support for PCM reception | |
139 | + * @spdif_tx: Support for SPDIF audio transmission | |
140 | + * @spdif_rx: Support for SPDIF audio reception | |
141 | + * @usb2: Support for transparent USB2.0 | |
142 | + * @rs232: Support for bidirectional RS232 | |
143 | + * @compression_type1: Support for compression type 1 | |
144 | + * @compression_type2: Support for compression type 2 | |
145 | + * @compression_type3: Support for compression type 3 | |
146 | + * @interlace: Support for interlace image formats | |
147 | + * @osd: Support for a OSD | |
148 | + * @compression_pipes: Number of compression pipes supported | |
149 | + */ | |
150 | +struct fpga_features { | |
151 | + u8 video_channels; | |
152 | + u8 carriers; | |
153 | + enum carrier_speed carrier_speed; | |
154 | + enum ram_config ram_config; | |
155 | + enum sysclock sysclock; | |
156 | + bool pcm_tx; | |
157 | + bool pcm_rx; | |
158 | + bool spdif_tx; | |
159 | + bool spdif_rx; | |
160 | + bool usb2; | |
161 | + bool rs232; | |
162 | + bool compression_type1; | |
163 | + bool compression_type2; | |
164 | + bool compression_type3; | |
165 | + bool interlace; | |
166 | + bool osd; | |
167 | + bool compression_pipes; | |
168 | +}; | |
169 | + | |
170 | +#ifdef CONFIG_SYS_FPGA_FLAVOR_GAZERBEAM | |
171 | + | |
172 | +/** | |
173 | + * get_versions() - Fill structure with info from version register. | |
174 | + * @dev: FPGA device to be queried for information | |
175 | + * @versions: Pointer to the structure to fill with information from the | |
176 | + * versions register | |
177 | + * Return: 0 | |
178 | + */ | |
179 | +static int get_versions(struct udevice *dev, struct fpga_versions *versions) | |
180 | +{ | |
181 | + struct ihs_fpga_priv *priv = dev_get_priv(dev); | |
182 | + enum { | |
183 | + VERSIONS_FPGA_VIDEO_CHANNEL = BIT(12), | |
184 | + VERSIONS_FPGA_CON_SIDE = BIT(13), | |
185 | + VERSIONS_FPGA_SC = BIT(14), | |
186 | + VERSIONS_PCB_CON = BIT(9), | |
187 | + VERSIONS_PCB_SC = BIT(8), | |
188 | + VERSIONS_PCB_VIDEO_MASK = 0x3 << 6, | |
189 | + VERSIONS_PCB_VIDEO_DP_1_2 = 0x0 << 6, | |
190 | + VERSIONS_PCB_VIDEO_HDMI_2_0 = 0x1 << 6, | |
191 | + VERSIONS_PCB_TRANSMISSION_MASK = 0x3 << 4, | |
192 | + VERSIONS_PCB_TRANSMISSION_FIBER_10G = 0x0 << 4, | |
193 | + VERSIONS_PCB_TRANSMISSION_CAT_10G = 0x1 << 4, | |
194 | + VERSIONS_PCB_TRANSMISSION_FIBER_3G = 0x2 << 4, | |
195 | + VERSIONS_PCB_TRANSMISSION_CAT_1G = 0x3 << 4, | |
196 | + VERSIONS_HW_VER_MASK = 0xf << 0, | |
197 | + }; | |
198 | + u16 raw_versions; | |
199 | + | |
200 | + memset(versions, 0, sizeof(struct fpga_versions)); | |
201 | + | |
202 | + ihs_fpga_get(priv->map, versions, &raw_versions); | |
203 | + | |
204 | + versions->video_channel = raw_versions & VERSIONS_FPGA_VIDEO_CHANNEL; | |
205 | + versions->con_side = raw_versions & VERSIONS_FPGA_CON_SIDE; | |
206 | + | |
207 | + switch (raw_versions & VERSIONS_PCB_VIDEO_MASK) { | |
208 | + case VERSIONS_PCB_VIDEO_DP_1_2: | |
209 | + versions->pcb_video_type = PCB_DP_1_2; | |
210 | + break; | |
211 | + | |
212 | + case VERSIONS_PCB_VIDEO_HDMI_2_0: | |
213 | + versions->pcb_video_type = PCB_HDMI_2_0; | |
214 | + break; | |
215 | + } | |
216 | + | |
217 | + switch (raw_versions & VERSIONS_PCB_TRANSMISSION_MASK) { | |
218 | + case VERSIONS_PCB_TRANSMISSION_FIBER_10G: | |
219 | + versions->pcb_transmission_type = PCB_FIBER_10G; | |
220 | + break; | |
221 | + | |
222 | + case VERSIONS_PCB_TRANSMISSION_CAT_10G: | |
223 | + versions->pcb_transmission_type = PCB_CAT_10G; | |
224 | + break; | |
225 | + | |
226 | + case VERSIONS_PCB_TRANSMISSION_FIBER_3G: | |
227 | + versions->pcb_transmission_type = PCB_FIBER_3G; | |
228 | + break; | |
229 | + | |
230 | + case VERSIONS_PCB_TRANSMISSION_CAT_1G: | |
231 | + versions->pcb_transmission_type = PCB_CAT_1G; | |
232 | + break; | |
233 | + } | |
234 | + | |
235 | + versions->hw_version = raw_versions & VERSIONS_HW_VER_MASK; | |
236 | + | |
237 | + return 0; | |
238 | +} | |
239 | + | |
240 | +/** | |
241 | + * get_features() - Fill structure with info from features register. | |
242 | + * @dev: FPGA device to be queried for information | |
243 | + * @features: Pointer to the structure to fill with information from the | |
244 | + * features register | |
245 | + * Return: 0 | |
246 | + */ | |
247 | +static int get_features(struct udevice *dev, struct fpga_features *features) | |
248 | +{ | |
249 | + struct ihs_fpga_priv *priv = dev_get_priv(dev); | |
250 | + enum { | |
251 | + FEATURE_SPDIF_RX = BIT(15), | |
252 | + FEATURE_SPDIF_TX = BIT(14), | |
253 | + FEATURE_PCM_RX = BIT(13), | |
254 | + FEATURE_PCM_TX = BIT(12), | |
255 | + FEATURE_RAM_MASK = GENMASK(11, 8), | |
256 | + FEATURE_RAM_DDR2_32BIT_295MBPS = 0x0 << 8, | |
257 | + FEATURE_RAM_DDR3_32BIT_590MBPS = 0x1 << 8, | |
258 | + FEATURE_RAM_DDR3_48BIT_590MBPS = 0x2 << 8, | |
259 | + FEATURE_RAM_DDR3_64BIT_1800MBPS = 0x3 << 8, | |
260 | + FEATURE_RAM_DDR3_48BIT_1800MBPS = 0x4 << 8, | |
261 | + FEATURE_CARRIER_SPEED_MASK = GENMASK(7, 6), | |
262 | + FEATURE_CARRIER_SPEED_1G = 0x0 << 6, | |
263 | + FEATURE_CARRIER_SPEED_2_5G = 0x1 << 6, | |
264 | + FEATURE_CARRIER_SPEED_10G = 0x2 << 6, | |
265 | + FEATURE_CARRIERS_MASK = GENMASK(5, 4), | |
266 | + FEATURE_CARRIERS_0 = 0x0 << 4, | |
267 | + FEATURE_CARRIERS_1 = 0x1 << 4, | |
268 | + FEATURE_CARRIERS_2 = 0x2 << 4, | |
269 | + FEATURE_CARRIERS_4 = 0x3 << 4, | |
270 | + FEATURE_USB2 = BIT(3), | |
271 | + FEATURE_VIDEOCHANNELS_MASK = GENMASK(2, 0), | |
272 | + FEATURE_VIDEOCHANNELS_0 = 0x0 << 0, | |
273 | + FEATURE_VIDEOCHANNELS_1 = 0x1 << 0, | |
274 | + FEATURE_VIDEOCHANNELS_1_1 = 0x2 << 0, | |
275 | + FEATURE_VIDEOCHANNELS_2 = 0x3 << 0, | |
276 | + }; | |
277 | + | |
278 | + enum { | |
279 | + EXT_FEATURE_OSD = BIT(15), | |
280 | + EXT_FEATURE_ETHERNET = BIT(9), | |
281 | + EXT_FEATURE_INTERLACE = BIT(8), | |
282 | + EXT_FEATURE_RS232 = BIT(7), | |
283 | + EXT_FEATURE_COMPRESSION_PERF_MASK = GENMASK(6, 4), | |
284 | + EXT_FEATURE_COMPRESSION_PERF_1X = 0x0 << 4, | |
285 | + EXT_FEATURE_COMPRESSION_PERF_2X = 0x1 << 4, | |
286 | + EXT_FEATURE_COMPRESSION_PERF_4X = 0x2 << 4, | |
287 | + EXT_FEATURE_COMPRESSION_TYPE1 = BIT(0), | |
288 | + EXT_FEATURE_COMPRESSION_TYPE2 = BIT(1), | |
289 | + EXT_FEATURE_COMPRESSION_TYPE3 = BIT(2), | |
290 | + }; | |
291 | + | |
292 | + u16 raw_features; | |
293 | + u16 raw_extended_features; | |
294 | + | |
295 | + memset(features, 0, sizeof(struct fpga_features)); | |
296 | + | |
297 | + ihs_fpga_get(priv->map, features, &raw_features); | |
298 | + ihs_fpga_get(priv->map, extended_features, &raw_extended_features); | |
299 | + | |
300 | + switch (raw_features & FEATURE_VIDEOCHANNELS_MASK) { | |
301 | + case FEATURE_VIDEOCHANNELS_0: | |
302 | + features->video_channels = 0; | |
303 | + break; | |
304 | + | |
305 | + case FEATURE_VIDEOCHANNELS_1: | |
306 | + features->video_channels = 1; | |
307 | + break; | |
308 | + | |
309 | + case FEATURE_VIDEOCHANNELS_1_1: | |
310 | + case FEATURE_VIDEOCHANNELS_2: | |
311 | + features->video_channels = 2; | |
312 | + break; | |
313 | + }; | |
314 | + | |
315 | + switch (raw_features & FEATURE_CARRIERS_MASK) { | |
316 | + case FEATURE_CARRIERS_0: | |
317 | + features->carriers = 0; | |
318 | + break; | |
319 | + | |
320 | + case FEATURE_CARRIERS_1: | |
321 | + features->carriers = 1; | |
322 | + break; | |
323 | + | |
324 | + case FEATURE_CARRIERS_2: | |
325 | + features->carriers = 2; | |
326 | + break; | |
327 | + | |
328 | + case FEATURE_CARRIERS_4: | |
329 | + features->carriers = 4; | |
330 | + break; | |
331 | + } | |
332 | + | |
333 | + switch (raw_features & FEATURE_CARRIER_SPEED_MASK) { | |
334 | + case FEATURE_CARRIER_SPEED_1G: | |
335 | + features->carrier_speed = CARRIER_SPEED_1G; | |
336 | + break; | |
337 | + case FEATURE_CARRIER_SPEED_2_5G: | |
338 | + features->carrier_speed = CARRIER_SPEED_2_5G; | |
339 | + break; | |
340 | + case FEATURE_CARRIER_SPEED_10G: | |
341 | + features->carrier_speed = CARRIER_SPEED_10G; | |
342 | + break; | |
343 | + } | |
344 | + | |
345 | + switch (raw_features & FEATURE_RAM_MASK) { | |
346 | + case FEATURE_RAM_DDR2_32BIT_295MBPS: | |
347 | + features->ram_config = RAM_DDR2_32BIT_295MBPS; | |
348 | + break; | |
349 | + | |
350 | + case FEATURE_RAM_DDR3_32BIT_590MBPS: | |
351 | + features->ram_config = RAM_DDR3_32BIT_590MBPS; | |
352 | + break; | |
353 | + | |
354 | + case FEATURE_RAM_DDR3_48BIT_590MBPS: | |
355 | + features->ram_config = RAM_DDR3_48BIT_590MBPS; | |
356 | + break; | |
357 | + | |
358 | + case FEATURE_RAM_DDR3_64BIT_1800MBPS: | |
359 | + features->ram_config = RAM_DDR3_64BIT_1800MBPS; | |
360 | + break; | |
361 | + | |
362 | + case FEATURE_RAM_DDR3_48BIT_1800MBPS: | |
363 | + features->ram_config = RAM_DDR3_48BIT_1800MBPS; | |
364 | + break; | |
365 | + } | |
366 | + | |
367 | + features->pcm_tx = raw_features & FEATURE_PCM_TX; | |
368 | + features->pcm_rx = raw_features & FEATURE_PCM_RX; | |
369 | + features->spdif_tx = raw_features & FEATURE_SPDIF_TX; | |
370 | + features->spdif_rx = raw_features & FEATURE_SPDIF_RX; | |
371 | + features->usb2 = raw_features & FEATURE_USB2; | |
372 | + features->rs232 = raw_extended_features & EXT_FEATURE_RS232; | |
373 | + features->compression_type1 = raw_extended_features & | |
374 | + EXT_FEATURE_COMPRESSION_TYPE1; | |
375 | + features->compression_type2 = raw_extended_features & | |
376 | + EXT_FEATURE_COMPRESSION_TYPE2; | |
377 | + features->compression_type3 = raw_extended_features & | |
378 | + EXT_FEATURE_COMPRESSION_TYPE3; | |
379 | + features->interlace = raw_extended_features & EXT_FEATURE_INTERLACE; | |
380 | + features->osd = raw_extended_features & EXT_FEATURE_OSD; | |
381 | + features->compression_pipes = raw_extended_features & | |
382 | + EXT_FEATURE_COMPRESSION_PERF_MASK; | |
383 | + | |
384 | + return 0; | |
385 | +} | |
386 | + | |
387 | +#else | |
388 | + | |
389 | +/** | |
390 | + * get_versions() - Fill structure with info from version register. | |
391 | + * @fpga: Identifier of the FPGA device to be queried for information | |
392 | + * @versions: Pointer to the structure to fill with information from the | |
393 | + * versions register | |
394 | + * | |
395 | + * This is the legacy version and should be considered deprecated for new | |
396 | + * devices. | |
397 | + * | |
398 | + * Return: 0 | |
399 | + */ | |
400 | +static int get_versions(unsigned int fpga, struct fpga_versions *versions) | |
401 | +{ | |
402 | + enum { | |
403 | + /* HW version encoding is a mess, leave it for the moment */ | |
404 | + VERSIONS_HW_VER_MASK = 0xf << 0, | |
405 | + VERSIONS_PIX_CLOCK_GEN_IDT8N3QV01 = BIT(4), | |
406 | + VERSIONS_SFP = BIT(5), | |
407 | + VERSIONS_VIDEO_MASK = 0x7 << 6, | |
408 | + VERSIONS_VIDEO_DVI = 0x0 << 6, | |
409 | + VERSIONS_VIDEO_DP_165 = 0x1 << 6, | |
410 | + VERSIONS_VIDEO_DP_300 = 0x2 << 6, | |
411 | + VERSIONS_VIDEO_HDMI = 0x3 << 6, | |
412 | + VERSIONS_UT_MASK = 0xf << 12, | |
413 | + VERSIONS_UT_MAIN_SERVER = 0x0 << 12, | |
414 | + VERSIONS_UT_MAIN_USER = 0x1 << 12, | |
415 | + VERSIONS_UT_VIDEO_SERVER = 0x2 << 12, | |
416 | + VERSIONS_UT_VIDEO_USER = 0x3 << 12, | |
417 | + }; | |
418 | + u16 raw_versions; | |
419 | + | |
420 | + memset(versions, 0, sizeof(struct fpga_versions)); | |
421 | + | |
422 | + FPGA_GET_REG(fpga, versions, &raw_versions); | |
423 | + | |
424 | + switch (raw_versions & VERSIONS_UT_MASK) { | |
425 | + case VERSIONS_UT_MAIN_SERVER: | |
426 | + versions->video_channel = false; | |
427 | + versions->con_side = false; | |
428 | + break; | |
429 | + | |
430 | + case VERSIONS_UT_MAIN_USER: | |
431 | + versions->video_channel = false; | |
432 | + versions->con_side = true; | |
433 | + break; | |
434 | + | |
435 | + case VERSIONS_UT_VIDEO_SERVER: | |
436 | + versions->video_channel = true; | |
437 | + versions->con_side = false; | |
438 | + break; | |
439 | + | |
440 | + case VERSIONS_UT_VIDEO_USER: | |
441 | + versions->video_channel = true; | |
442 | + versions->con_side = true; | |
443 | + break; | |
444 | + } | |
445 | + | |
446 | + switch (raw_versions & VERSIONS_VIDEO_MASK) { | |
447 | + case VERSIONS_VIDEO_DVI: | |
448 | + versions->pcb_video_type = PCB_DVI_SL; | |
449 | + break; | |
450 | + | |
451 | + case VERSIONS_VIDEO_DP_165: | |
452 | + versions->pcb_video_type = PCB_DP_165MPIX; | |
453 | + break; | |
454 | + | |
455 | + case VERSIONS_VIDEO_DP_300: | |
456 | + versions->pcb_video_type = PCB_DP_300MPIX; | |
457 | + break; | |
458 | + | |
459 | + case VERSIONS_VIDEO_HDMI: | |
460 | + versions->pcb_video_type = PCB_HDMI; | |
461 | + break; | |
462 | + } | |
463 | + | |
464 | + versions->hw_version = raw_versions & VERSIONS_HW_VER_MASK; | |
465 | + | |
466 | + if (raw_versions & VERSIONS_SFP) | |
467 | + versions->pcb_transmission_type = PCB_FIBER_3G; | |
468 | + else | |
469 | + versions->pcb_transmission_type = PCB_CAT_1G; | |
470 | + | |
471 | + return 0; | |
472 | +} | |
473 | + | |
474 | +/** | |
475 | + * get_features() - Fill structure with info from features register. | |
476 | + * @fpga: Identifier of the FPGA device to be queried for information | |
477 | + * @features: Pointer to the structure to fill with information from the | |
478 | + * features register | |
479 | + * | |
480 | + * This is the legacy version and should be considered deprecated for new | |
481 | + * devices. | |
482 | + * | |
483 | + * Return: 0 | |
484 | + */ | |
485 | +static int get_features(unsigned int fpga, struct fpga_features *features) | |
486 | +{ | |
487 | + enum { | |
488 | + FEATURE_CARRIER_SPEED_2_5 = BIT(4), | |
489 | + FEATURE_RAM_MASK = 0x7 << 5, | |
490 | + FEATURE_RAM_DDR2_32BIT = 0x0 << 5, | |
491 | + FEATURE_RAM_DDR3_32BIT = 0x1 << 5, | |
492 | + FEATURE_RAM_DDR3_48BIT = 0x2 << 5, | |
493 | + FEATURE_PCM_AUDIO_TX = BIT(9), | |
494 | + FEATURE_PCM_AUDIO_RX = BIT(10), | |
495 | + FEATURE_OSD = BIT(11), | |
496 | + FEATURE_USB20 = BIT(12), | |
497 | + FEATURE_COMPRESSION_MASK = 7 << 13, | |
498 | + FEATURE_COMPRESSION_TYPE1 = 0x1 << 13, | |
499 | + FEATURE_COMPRESSION_TYPE1_TYPE2 = 0x3 << 13, | |
500 | + FEATURE_COMPRESSION_TYPE1_TYPE2_TYPE3 = 0x7 << 13, | |
501 | + }; | |
502 | + | |
503 | + enum { | |
504 | + EXTENDED_FEATURE_SPDIF_AUDIO_TX = BIT(0), | |
505 | + EXTENDED_FEATURE_SPDIF_AUDIO_RX = BIT(1), | |
506 | + EXTENDED_FEATURE_RS232 = BIT(2), | |
507 | + EXTENDED_FEATURE_COMPRESSION_PIPES = BIT(3), | |
508 | + EXTENDED_FEATURE_INTERLACE = BIT(4), | |
509 | + }; | |
510 | + | |
511 | + u16 raw_features; | |
512 | + u16 raw_extended_features; | |
513 | + | |
514 | + memset(features, 0, sizeof(struct fpga_features)); | |
515 | + | |
516 | + FPGA_GET_REG(fpga, fpga_features, &raw_features); | |
517 | + FPGA_GET_REG(fpga, fpga_ext_features, &raw_extended_features); | |
518 | + | |
519 | + features->video_channels = raw_features & 0x3; | |
520 | + features->carriers = (raw_features >> 2) & 0x3; | |
521 | + | |
522 | + features->carrier_speed = (raw_features & FEATURE_CARRIER_SPEED_2_5) | |
523 | + ? CARRIER_SPEED_2_5G : CARRIER_SPEED_1G; | |
524 | + | |
525 | + switch (raw_features & FEATURE_RAM_MASK) { | |
526 | + case FEATURE_RAM_DDR2_32BIT: | |
527 | + features->ram_config = RAM_DDR2_32BIT_295MBPS; | |
528 | + break; | |
529 | + | |
530 | + case FEATURE_RAM_DDR3_32BIT: | |
531 | + features->ram_config = RAM_DDR3_32BIT_590MBPS; | |
532 | + break; | |
533 | + | |
534 | + case FEATURE_RAM_DDR3_48BIT: | |
535 | + features->ram_config = RAM_DDR3_48BIT_590MBPS; | |
536 | + break; | |
537 | + } | |
538 | + | |
539 | + features->pcm_tx = raw_features & FEATURE_PCM_AUDIO_TX; | |
540 | + features->pcm_rx = raw_features & FEATURE_PCM_AUDIO_RX; | |
541 | + features->spdif_tx = raw_extended_features & | |
542 | + EXTENDED_FEATURE_SPDIF_AUDIO_TX; | |
543 | + features->spdif_rx = raw_extended_features & | |
544 | + EXTENDED_FEATURE_SPDIF_AUDIO_RX; | |
545 | + | |
546 | + features->usb2 = raw_features & FEATURE_USB20; | |
547 | + features->rs232 = raw_extended_features & EXTENDED_FEATURE_RS232; | |
548 | + | |
549 | + features->compression_type1 = false; | |
550 | + features->compression_type2 = false; | |
551 | + features->compression_type3 = false; | |
552 | + switch (raw_features & FEATURE_COMPRESSION_MASK) { | |
553 | + case FEATURE_COMPRESSION_TYPE1_TYPE2_TYPE3: | |
554 | + features->compression_type3 = true; | |
555 | + /* fall-through */ | |
556 | + case FEATURE_COMPRESSION_TYPE1_TYPE2: | |
557 | + features->compression_type2 = true; | |
558 | + /* fall-through */ | |
559 | + case FEATURE_COMPRESSION_TYPE1: | |
560 | + features->compression_type1 = true; | |
561 | + break; | |
562 | + } | |
563 | + | |
564 | + features->interlace = raw_extended_features & | |
565 | + EXTENDED_FEATURE_INTERLACE; | |
566 | + features->osd = raw_features & FEATURE_OSD; | |
567 | + features->compression_pipes = raw_extended_features & | |
568 | + EXTENDED_FEATURE_COMPRESSION_PIPES; | |
569 | + | |
570 | + return 0; | |
571 | +} | |
572 | + | |
573 | +#endif | |
574 | + | |
575 | +/** | |
576 | + * fpga_print_info() - Print information about FPGA device | |
577 | + * @dev: FPGA device to print information about | |
578 | + */ | |
579 | +static void fpga_print_info(struct udevice *dev) | |
580 | +{ | |
581 | + struct ihs_fpga_priv *priv = dev_get_priv(dev); | |
582 | + u16 fpga_version; | |
583 | + struct fpga_versions versions; | |
584 | + struct fpga_features features; | |
585 | + | |
586 | + ihs_fpga_get(priv->map, fpga_version, &fpga_version); | |
587 | + get_versions(dev, &versions); | |
588 | + get_features(dev, &features); | |
589 | + | |
590 | + if (versions.video_channel) | |
591 | + printf("Videochannel"); | |
592 | + else | |
593 | + printf("Mainchannel"); | |
594 | + | |
595 | + if (versions.con_side) | |
596 | + printf(" User"); | |
597 | + else | |
598 | + printf(" Server"); | |
599 | + | |
600 | + switch (versions.pcb_transmission_type) { | |
601 | + case PCB_CAT_1G: | |
602 | + case PCB_CAT_10G: | |
603 | + printf(" CAT"); | |
604 | + break; | |
605 | + case PCB_FIBER_3G: | |
606 | + case PCB_FIBER_10G: | |
607 | + printf(" Fiber"); | |
608 | + break; | |
609 | + }; | |
610 | + | |
611 | + switch (versions.pcb_video_type) { | |
612 | + case PCB_DVI_SL: | |
613 | + printf(" DVI,"); | |
614 | + break; | |
615 | + case PCB_DP_165MPIX: | |
616 | + printf(" DP 165MPix/s,"); | |
617 | + break; | |
618 | + case PCB_DP_300MPIX: | |
619 | + printf(" DP 300MPix/s,"); | |
620 | + break; | |
621 | + case PCB_HDMI: | |
622 | + printf(" HDMI,"); | |
623 | + break; | |
624 | + case PCB_DP_1_2: | |
625 | + printf(" DP 1.2,"); | |
626 | + break; | |
627 | + case PCB_HDMI_2_0: | |
628 | + printf(" HDMI 2.0,"); | |
629 | + break; | |
630 | + } | |
631 | + | |
632 | + printf(" FPGA V %d.%02d\n features: ", | |
633 | + fpga_version / 100, fpga_version % 100); | |
634 | + | |
635 | + if (!features.compression_type1 && | |
636 | + !features.compression_type2 && | |
637 | + !features.compression_type3) | |
638 | + printf("no compression, "); | |
639 | + | |
640 | + if (features.compression_type1) | |
641 | + printf("type1, "); | |
642 | + | |
643 | + if (features.compression_type2) | |
644 | + printf("type2, "); | |
645 | + | |
646 | + if (features.compression_type3) | |
647 | + printf("type3, "); | |
648 | + | |
649 | + printf("%sosd", features.osd ? "" : "no "); | |
650 | + | |
651 | + if (features.pcm_rx && features.pcm_tx) | |
652 | + printf(", pcm rx+tx"); | |
653 | + else if (features.pcm_rx) | |
654 | + printf(", pcm rx"); | |
655 | + else if (features.pcm_tx) | |
656 | + printf(", pcm tx"); | |
657 | + | |
658 | + if (features.spdif_rx && features.spdif_tx) | |
659 | + printf(", spdif rx+tx"); | |
660 | + else if (features.spdif_rx) | |
661 | + printf(", spdif rx"); | |
662 | + else if (features.spdif_tx) | |
663 | + printf(", spdif tx"); | |
664 | + | |
665 | + puts(",\n "); | |
666 | + | |
667 | + switch (features.sysclock) { | |
668 | + case SYSCLK_147456: | |
669 | + printf("clock 147.456 MHz"); | |
670 | + break; | |
671 | + } | |
672 | + | |
673 | + switch (features.ram_config) { | |
674 | + case RAM_DDR2_32BIT_295MBPS: | |
675 | + printf(", RAM 32 bit DDR2"); | |
676 | + break; | |
677 | + case RAM_DDR3_32BIT_590MBPS: | |
678 | + printf(", RAM 32 bit DDR3"); | |
679 | + break; | |
680 | + case RAM_DDR3_48BIT_590MBPS: | |
681 | + case RAM_DDR3_48BIT_1800MBPS: | |
682 | + printf(", RAM 48 bit DDR3"); | |
683 | + break; | |
684 | + case RAM_DDR3_64BIT_1800MBPS: | |
685 | + printf(", RAM 64 bit DDR3"); | |
686 | + break; | |
687 | + } | |
688 | + | |
689 | + printf(", %d carrier(s)", features.carriers); | |
690 | + | |
691 | + switch (features.carrier_speed) { | |
692 | + case CARRIER_SPEED_1G: | |
693 | + printf(", 1Gbit/s"); | |
694 | + break; | |
695 | + case CARRIER_SPEED_3G: | |
696 | + printf(", 3Gbit/s"); | |
697 | + break; | |
698 | + case CARRIER_SPEED_10G: | |
699 | + printf(", 10Gbit/s"); | |
700 | + break; | |
701 | + } | |
702 | + | |
703 | + printf(", %d video channel(s)\n", features.video_channels); | |
704 | +} | |
705 | + | |
706 | +/** | |
707 | + * do_reflection_test() - Run reflection test on a FPGA device | |
708 | + * @dev: FPGA device to run reflection test on | |
709 | + * | |
710 | + * Return: 0 if reflection test succeeded, -ve on error | |
711 | + */ | |
712 | +static int do_reflection_test(struct udevice *dev) | |
713 | +{ | |
714 | + struct ihs_fpga_priv *priv = dev_get_priv(dev); | |
715 | + int ctr = 0; | |
716 | + | |
717 | + while (1) { | |
718 | + u16 val; | |
719 | + | |
720 | + ihs_fpga_set(priv->map, reflection_low, REFLECTION_TESTPATTERN); | |
721 | + | |
722 | + ihs_fpga_get(priv->map, reflection_low, &val); | |
723 | + if (val == (~REFLECTION_TESTPATTERN & 0xffff)) | |
724 | + return -EIO; | |
725 | + | |
726 | + mdelay(REFLECTION_TEST_DELAY); | |
727 | + if (ctr++ > REFLECTION_TEST_ROUNDS) | |
728 | + return 0; | |
729 | + } | |
730 | +} | |
731 | + | |
732 | +/** | |
733 | + * wait_for_fpga_done() - Wait until 'done'-flag is set for FPGA device | |
734 | + * @dev: FPGA device whose done flag to wait for | |
735 | + * | |
736 | + * This function waits until it detects that the done-GPIO's value was changed | |
737 | + * to 1 by the FPGA, which indicates that the device is configured and ready to | |
738 | + * use. | |
739 | + * | |
740 | + * Return: 0 if done flag was detected, -ve on error | |
741 | + */ | |
742 | +static int wait_for_fpga_done(struct udevice *dev) | |
743 | +{ | |
744 | + struct ihs_fpga_priv *priv = dev_get_priv(dev); | |
745 | + int ctr = 0; | |
746 | + int done_val; | |
747 | + | |
748 | + while (1) { | |
749 | + done_val = dm_gpio_get_value(&priv->done_gpio); | |
750 | + if (done_val < 0) { | |
751 | + debug("%s: Error while reading done-GPIO (err = %d)\n", | |
752 | + dev->name, done_val); | |
753 | + return done_val; | |
754 | + } | |
755 | + | |
756 | + if (done_val) | |
757 | + return 0; | |
758 | + | |
759 | + mdelay(FPGA_DONE_WAIT_DELAY); | |
760 | + if (ctr++ > FPGA_DONE_WAIT_ROUND) { | |
761 | + debug("%s: FPGA init failed (done not detected)\n", | |
762 | + dev->name); | |
763 | + return -EIO; | |
764 | + } | |
765 | + } | |
766 | +} | |
767 | + | |
768 | +static int ihs_fpga_probe(struct udevice *dev) | |
769 | +{ | |
770 | + struct ihs_fpga_priv *priv = dev_get_priv(dev); | |
771 | + int ret; | |
772 | + | |
773 | + /* TODO(mario.six@gdsys.cc): Case of FPGA attached to MCLink bus */ | |
774 | + | |
775 | + ret = regmap_init_mem(dev_ofnode(dev), &priv->map); | |
776 | + if (ret) { | |
777 | + debug("%s: Could not initialize regmap (err = %d)", | |
778 | + dev->name, ret); | |
779 | + return ret; | |
780 | + } | |
781 | + | |
782 | + ret = gpio_request_by_name(dev, "reset-gpios", 0, &priv->reset_gpio, | |
783 | + GPIOD_IS_OUT); | |
784 | + if (ret) { | |
785 | + debug("%s: Could not get reset-GPIO (err = %d)\n", | |
786 | + dev->name, ret); | |
787 | + return ret; | |
788 | + } | |
789 | + | |
790 | + if (!priv->reset_gpio.dev) { | |
791 | + debug("%s: Could not get reset-GPIO\n", dev->name); | |
792 | + return -ENOENT; | |
793 | + } | |
794 | + | |
795 | + ret = gpio_request_by_name(dev, "done-gpios", 0, &priv->done_gpio, | |
796 | + GPIOD_IS_IN); | |
797 | + if (ret) { | |
798 | + debug("%s: Could not get done-GPIO (err = %d)\n", | |
799 | + dev->name, ret); | |
800 | + return ret; | |
801 | + } | |
802 | + | |
803 | + if (!priv->done_gpio.dev) { | |
804 | + debug("%s: Could not get done-GPIO\n", dev->name); | |
805 | + return -ENOENT; | |
806 | + } | |
807 | + | |
808 | + ret = dm_gpio_set_value(&priv->reset_gpio, 1); | |
809 | + if (ret) { | |
810 | + debug("%s: Error while setting reset-GPIO (err = %d)\n", | |
811 | + dev->name, ret); | |
812 | + return ret; | |
813 | + } | |
814 | + | |
815 | + /* If FPGA already runs, don't initialize again */ | |
816 | + if (do_reflection_test(dev)) | |
817 | + goto reflection_ok; | |
818 | + | |
819 | + ret = dm_gpio_set_value(&priv->reset_gpio, 0); | |
820 | + if (ret) { | |
821 | + debug("%s: Error while setting reset-GPIO (err = %d)\n", | |
822 | + dev->name, ret); | |
823 | + return ret; | |
824 | + } | |
825 | + | |
826 | + ret = wait_for_fpga_done(dev); | |
827 | + if (ret) { | |
828 | + debug("%s: Error while waiting for FPGA done (err = %d)\n", | |
829 | + dev->name, ret); | |
830 | + return ret; | |
831 | + } | |
832 | + | |
833 | + udelay(10); | |
834 | + | |
835 | + ret = dm_gpio_set_value(&priv->reset_gpio, 1); | |
836 | + if (ret) { | |
837 | + debug("%s: Error while setting reset-GPIO (err = %d)\n", | |
838 | + dev->name, ret); | |
839 | + return ret; | |
840 | + } | |
841 | + | |
842 | + if (!do_reflection_test(dev)) { | |
843 | + debug("%s: Reflection test FAILED\n", dev->name); | |
844 | + return -EIO; | |
845 | + } | |
846 | + | |
847 | +reflection_ok: | |
848 | + printf("%s: Reflection test passed.\n", dev->name); | |
849 | + | |
850 | + fpga_print_info(dev); | |
851 | + | |
852 | + return 0; | |
853 | +} | |
854 | + | |
855 | +static const struct udevice_id ihs_fpga_ids[] = { | |
856 | + { .compatible = "gdsys,iocon_fpga" }, | |
857 | + { .compatible = "gdsys,iocpu_fpga" }, | |
858 | + { } | |
859 | +}; | |
860 | + | |
861 | +U_BOOT_DRIVER(ihs_fpga_bus) = { | |
862 | + .name = "ihs_fpga_bus", | |
863 | + .id = UCLASS_MISC, | |
864 | + .of_match = ihs_fpga_ids, | |
865 | + .probe = ihs_fpga_probe, | |
866 | + .priv_auto_alloc_size = sizeof(struct ihs_fpga_priv), | |
867 | +}; |
drivers/misc/ihs_fpga.h
1 | +/* SPDX-License-Identifier: GPL-2.0+ */ | |
2 | +/* | |
3 | + * (C) Copyright 2018 | |
4 | + * Mario Six, Guntermann & Drunck GmbH, mario.six@gdsys.cc | |
5 | + */ | |
6 | + | |
7 | +/** | |
8 | + * struct ihs_fpga_regs - IHS FPGA register map structure | |
9 | + * @reflection_low: Lower reflection register | |
10 | + * @versions: PCB versions register | |
11 | + * @fpga_version: FPGA versions register | |
12 | + * @features: FPGA features register | |
13 | + * @extended_features: FPGA extended features register | |
14 | + * @top_interrupt: Top interrupt register | |
15 | + * @top_interrupt_enable: Top interrupt enable register | |
16 | + * @status: FPGA status register | |
17 | + * @control: FPGA control register | |
18 | + * @extended_control: FPGA extended control register | |
19 | + */ | |
20 | +struct ihs_fpga_regs { | |
21 | + u16 reflection_low; | |
22 | + u16 versions; | |
23 | + u16 fpga_version; | |
24 | + u16 features; | |
25 | + u16 extended_features; | |
26 | + u16 top_interrupt; | |
27 | + u16 top_interrupt_enable; | |
28 | + u16 status; | |
29 | + u16 control; | |
30 | + u16 extended_control; | |
31 | +}; | |
32 | + | |
33 | +/** | |
34 | + * ihs_fpga_set() - Convenience macro to set values in FPGA register map | |
35 | + * @map: Register map to set a value in | |
36 | + * @member: Name of member (described by ihs_fpga_regs) to set | |
37 | + * @val: Value to set the member to | |
38 | + */ | |
39 | +#define ihs_fpga_set(map, member, val) \ | |
40 | + regmap_set(map, struct ihs_fpga_regs, member, val) | |
41 | + | |
42 | +/** | |
43 | + * ihs_fpga_get() - Convenience macro to get values from FPGA register map | |
44 | + * @map: Register map to read value from | |
45 | + * @member: Name of member (described by ihs_fpga_regs) to get | |
46 | + * @valp: Pointe to variable to receive the value read | |
47 | + */ | |
48 | +#define ihs_fpga_get(map, member, valp) \ | |
49 | + regmap_get(map, struct ihs_fpga_regs, member, valp) |