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authorGuennadi Liakhovetski <g.liakhovetski@gmx.de>2010-07-21 06:13:21 -0400
committerPaul Mundt <lethal@linux-sh.org>2010-08-04 03:12:15 -0400
commit6011bdeaa6089d49c02de69f05980da7bad314ab (patch)
tree8b0109726f0397e3ef7dbc4ffecb1fd4fdacdb00 /drivers/video/sh_mobile_hdmi.c
parentc2439398170be9d7af28eb3ab59593369cb303f3 (diff)
fbdev: sh-mobile: HDMI support for SH-Mobile SoCs
Some SH-Mobile SoCs have an HDMI controller and a PHY, attached to one of their LCDC interfaces. This patch adds a preliminary static support for such controllers, this means, that only the 720p mode is handled ATM. Support for more modes and a dynamic switching between them will be added by a follow up patch. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'drivers/video/sh_mobile_hdmi.c')
-rw-r--r--drivers/video/sh_mobile_hdmi.c1028
1 files changed, 1028 insertions, 0 deletions
diff --git a/drivers/video/sh_mobile_hdmi.c b/drivers/video/sh_mobile_hdmi.c
new file mode 100644
index 000000000000..2fde08cc66bf
--- /dev/null
+++ b/drivers/video/sh_mobile_hdmi.c
@@ -0,0 +1,1028 @@
1/*
2 * SH-Mobile High-Definition Multimedia Interface (HDMI) driver
3 * for SLISHDMI13T and SLIPHDMIT IP cores
4 *
5 * Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11
12#include <linux/clk.h>
13#include <linux/console.h>
14#include <linux/delay.h>
15#include <linux/err.h>
16#include <linux/init.h>
17#include <linux/interrupt.h>
18#include <linux/io.h>
19#include <linux/module.h>
20#include <linux/platform_device.h>
21#include <linux/pm_runtime.h>
22#include <linux/slab.h>
23#include <linux/types.h>
24#include <linux/workqueue.h>
25
26#include <video/sh_mobile_hdmi.h>
27#include <video/sh_mobile_lcdc.h>
28
29#define HDMI_SYSTEM_CTRL 0x00 /* System control */
30#define HDMI_L_R_DATA_SWAP_CTRL_RPKT 0x01 /* L/R data swap control,
31 bits 19..16 of 20-bit N for Audio Clock Regeneration packet */
32#define HDMI_20_BIT_N_FOR_AUDIO_RPKT_15_8 0x02 /* bits 15..8 of 20-bit N for Audio Clock Regeneration packet */
33#define HDMI_20_BIT_N_FOR_AUDIO_RPKT_7_0 0x03 /* bits 7..0 of 20-bit N for Audio Clock Regeneration packet */
34#define HDMI_SPDIF_AUDIO_SAMP_FREQ_CTS 0x04 /* SPDIF audio sampling frequency,
35 bits 19..16 of Internal CTS */
36#define HDMI_INTERNAL_CTS_15_8 0x05 /* bits 15..8 of Internal CTS */
37#define HDMI_INTERNAL_CTS_7_0 0x06 /* bits 7..0 of Internal CTS */
38#define HDMI_EXTERNAL_CTS_19_16 0x07 /* External CTS */
39#define HDMI_EXTERNAL_CTS_15_8 0x08 /* External CTS */
40#define HDMI_EXTERNAL_CTS_7_0 0x09 /* External CTS */
41#define HDMI_AUDIO_SETTING_1 0x0A /* Audio setting.1 */
42#define HDMI_AUDIO_SETTING_2 0x0B /* Audio setting.2 */
43#define HDMI_I2S_AUDIO_SET 0x0C /* I2S audio setting */
44#define HDMI_DSD_AUDIO_SET 0x0D /* DSD audio setting */
45#define HDMI_DEBUG_MONITOR_1 0x0E /* Debug monitor.1 */
46#define HDMI_DEBUG_MONITOR_2 0x0F /* Debug monitor.2 */
47#define HDMI_I2S_INPUT_PIN_SWAP 0x10 /* I2S input pin swap */
48#define HDMI_AUDIO_STATUS_BITS_SETTING_1 0x11 /* Audio status bits setting.1 */
49#define HDMI_AUDIO_STATUS_BITS_SETTING_2 0x12 /* Audio status bits setting.2 */
50#define HDMI_CATEGORY_CODE 0x13 /* Category code */
51#define HDMI_SOURCE_NUM_AUDIO_WORD_LEN 0x14 /* Source number/Audio word length */
52#define HDMI_AUDIO_VIDEO_SETTING_1 0x15 /* Audio/Video setting.1 */
53#define HDMI_VIDEO_SETTING_1 0x16 /* Video setting.1 */
54#define HDMI_DEEP_COLOR_MODES 0x17 /* Deep Color Modes */
55
56/* 12 16- and 10-bit Color space conversion parameters: 0x18..0x2f */
57#define HDMI_COLOR_SPACE_CONVERSION_PARAMETERS 0x18
58
59#define HDMI_EXTERNAL_VIDEO_PARAM_SETTINGS 0x30 /* External video parameter settings */
60#define HDMI_EXTERNAL_H_TOTAL_7_0 0x31 /* External horizontal total (LSB) */
61#define HDMI_EXTERNAL_H_TOTAL_11_8 0x32 /* External horizontal total (MSB) */
62#define HDMI_EXTERNAL_H_BLANK_7_0 0x33 /* External horizontal blank (LSB) */
63#define HDMI_EXTERNAL_H_BLANK_9_8 0x34 /* External horizontal blank (MSB) */
64#define HDMI_EXTERNAL_H_DELAY_7_0 0x35 /* External horizontal delay (LSB) */
65#define HDMI_EXTERNAL_H_DELAY_9_8 0x36 /* External horizontal delay (MSB) */
66#define HDMI_EXTERNAL_H_DURATION_7_0 0x37 /* External horizontal duration (LSB) */
67#define HDMI_EXTERNAL_H_DURATION_9_8 0x38 /* External horizontal duration (MSB) */
68#define HDMI_EXTERNAL_V_TOTAL_7_0 0x39 /* External vertical total (LSB) */
69#define HDMI_EXTERNAL_V_TOTAL_9_8 0x3A /* External vertical total (MSB) */
70#define HDMI_AUDIO_VIDEO_SETTING_2 0x3B /* Audio/Video setting.2 */
71#define HDMI_EXTERNAL_V_BLANK 0x3D /* External vertical blank */
72#define HDMI_EXTERNAL_V_DELAY 0x3E /* External vertical delay */
73#define HDMI_EXTERNAL_V_DURATION 0x3F /* External vertical duration */
74#define HDMI_CTRL_PKT_MANUAL_SEND_CONTROL 0x40 /* Control packet manual send control */
75#define HDMI_CTRL_PKT_AUTO_SEND 0x41 /* Control packet auto send with VSYNC control */
76#define HDMI_AUTO_CHECKSUM_OPTION 0x42 /* Auto checksum option */
77#define HDMI_VIDEO_SETTING_2 0x45 /* Video setting.2 */
78#define HDMI_OUTPUT_OPTION 0x46 /* Output option */
79#define HDMI_SLIPHDMIT_PARAM_OPTION 0x51 /* SLIPHDMIT parameter option */
80#define HDMI_HSYNC_PMENT_AT_EMB_7_0 0x52 /* HSYNC placement at embedded sync (LSB) */
81#define HDMI_HSYNC_PMENT_AT_EMB_15_8 0x53 /* HSYNC placement at embedded sync (MSB) */
82#define HDMI_VSYNC_PMENT_AT_EMB_7_0 0x54 /* VSYNC placement at embedded sync (LSB) */
83#define HDMI_VSYNC_PMENT_AT_EMB_14_8 0x55 /* VSYNC placement at embedded sync (MSB) */
84#define HDMI_SLIPHDMIT_PARAM_SETTINGS_1 0x56 /* SLIPHDMIT parameter settings.1 */
85#define HDMI_SLIPHDMIT_PARAM_SETTINGS_2 0x57 /* SLIPHDMIT parameter settings.2 */
86#define HDMI_SLIPHDMIT_PARAM_SETTINGS_3 0x58 /* SLIPHDMIT parameter settings.3 */
87#define HDMI_SLIPHDMIT_PARAM_SETTINGS_5 0x59 /* SLIPHDMIT parameter settings.5 */
88#define HDMI_SLIPHDMIT_PARAM_SETTINGS_6 0x5A /* SLIPHDMIT parameter settings.6 */
89#define HDMI_SLIPHDMIT_PARAM_SETTINGS_7 0x5B /* SLIPHDMIT parameter settings.7 */
90#define HDMI_SLIPHDMIT_PARAM_SETTINGS_8 0x5C /* SLIPHDMIT parameter settings.8 */
91#define HDMI_SLIPHDMIT_PARAM_SETTINGS_9 0x5D /* SLIPHDMIT parameter settings.9 */
92#define HDMI_SLIPHDMIT_PARAM_SETTINGS_10 0x5E /* SLIPHDMIT parameter settings.10 */
93#define HDMI_CTRL_PKT_BUF_INDEX 0x5F /* Control packet buffer index */
94#define HDMI_CTRL_PKT_BUF_ACCESS_HB0 0x60 /* Control packet data buffer access window - HB0 */
95#define HDMI_CTRL_PKT_BUF_ACCESS_HB1 0x61 /* Control packet data buffer access window - HB1 */
96#define HDMI_CTRL_PKT_BUF_ACCESS_HB2 0x62 /* Control packet data buffer access window - HB2 */
97#define HDMI_CTRL_PKT_BUF_ACCESS_PB0 0x63 /* Control packet data buffer access window - PB0 */
98#define HDMI_CTRL_PKT_BUF_ACCESS_PB1 0x64 /* Control packet data buffer access window - PB1 */
99#define HDMI_CTRL_PKT_BUF_ACCESS_PB2 0x65 /* Control packet data buffer access window - PB2 */
100#define HDMI_CTRL_PKT_BUF_ACCESS_PB3 0x66 /* Control packet data buffer access window - PB3 */
101#define HDMI_CTRL_PKT_BUF_ACCESS_PB4 0x67 /* Control packet data buffer access window - PB4 */
102#define HDMI_CTRL_PKT_BUF_ACCESS_PB5 0x68 /* Control packet data buffer access window - PB5 */
103#define HDMI_CTRL_PKT_BUF_ACCESS_PB6 0x69 /* Control packet data buffer access window - PB6 */
104#define HDMI_CTRL_PKT_BUF_ACCESS_PB7 0x6A /* Control packet data buffer access window - PB7 */
105#define HDMI_CTRL_PKT_BUF_ACCESS_PB8 0x6B /* Control packet data buffer access window - PB8 */
106#define HDMI_CTRL_PKT_BUF_ACCESS_PB9 0x6C /* Control packet data buffer access window - PB9 */
107#define HDMI_CTRL_PKT_BUF_ACCESS_PB10 0x6D /* Control packet data buffer access window - PB10 */
108#define HDMI_CTRL_PKT_BUF_ACCESS_PB11 0x6E /* Control packet data buffer access window - PB11 */
109#define HDMI_CTRL_PKT_BUF_ACCESS_PB12 0x6F /* Control packet data buffer access window - PB12 */
110#define HDMI_CTRL_PKT_BUF_ACCESS_PB13 0x70 /* Control packet data buffer access window - PB13 */
111#define HDMI_CTRL_PKT_BUF_ACCESS_PB14 0x71 /* Control packet data buffer access window - PB14 */
112#define HDMI_CTRL_PKT_BUF_ACCESS_PB15 0x72 /* Control packet data buffer access window - PB15 */
113#define HDMI_CTRL_PKT_BUF_ACCESS_PB16 0x73 /* Control packet data buffer access window - PB16 */
114#define HDMI_CTRL_PKT_BUF_ACCESS_PB17 0x74 /* Control packet data buffer access window - PB17 */
115#define HDMI_CTRL_PKT_BUF_ACCESS_PB18 0x75 /* Control packet data buffer access window - PB18 */
116#define HDMI_CTRL_PKT_BUF_ACCESS_PB19 0x76 /* Control packet data buffer access window - PB19 */
117#define HDMI_CTRL_PKT_BUF_ACCESS_PB20 0x77 /* Control packet data buffer access window - PB20 */
118#define HDMI_CTRL_PKT_BUF_ACCESS_PB21 0x78 /* Control packet data buffer access window - PB21 */
119#define HDMI_CTRL_PKT_BUF_ACCESS_PB22 0x79 /* Control packet data buffer access window - PB22 */
120#define HDMI_CTRL_PKT_BUF_ACCESS_PB23 0x7A /* Control packet data buffer access window - PB23 */
121#define HDMI_CTRL_PKT_BUF_ACCESS_PB24 0x7B /* Control packet data buffer access window - PB24 */
122#define HDMI_CTRL_PKT_BUF_ACCESS_PB25 0x7C /* Control packet data buffer access window - PB25 */
123#define HDMI_CTRL_PKT_BUF_ACCESS_PB26 0x7D /* Control packet data buffer access window - PB26 */
124#define HDMI_CTRL_PKT_BUF_ACCESS_PB27 0x7E /* Control packet data buffer access window - PB27 */
125#define HDMI_EDID_KSV_FIFO_ACCESS_WINDOW 0x80 /* EDID/KSV FIFO access window */
126#define HDMI_DDC_BUS_ACCESS_FREQ_CTRL_7_0 0x81 /* DDC bus access frequency control (LSB) */
127#define HDMI_DDC_BUS_ACCESS_FREQ_CTRL_15_8 0x82 /* DDC bus access frequency control (MSB) */
128#define HDMI_INTERRUPT_MASK_1 0x92 /* Interrupt mask.1 */
129#define HDMI_INTERRUPT_MASK_2 0x93 /* Interrupt mask.2 */
130#define HDMI_INTERRUPT_STATUS_1 0x94 /* Interrupt status.1 */
131#define HDMI_INTERRUPT_STATUS_2 0x95 /* Interrupt status.2 */
132#define HDMI_INTERRUPT_MASK_3 0x96 /* Interrupt mask.3 */
133#define HDMI_INTERRUPT_MASK_4 0x97 /* Interrupt mask.4 */
134#define HDMI_INTERRUPT_STATUS_3 0x98 /* Interrupt status.3 */
135#define HDMI_INTERRUPT_STATUS_4 0x99 /* Interrupt status.4 */
136#define HDMI_SOFTWARE_HDCP_CONTROL_1 0x9A /* Software HDCP control.1 */
137#define HDMI_FRAME_COUNTER 0x9C /* Frame counter */
138#define HDMI_FRAME_COUNTER_FOR_RI_CHECK 0x9D /* Frame counter for Ri check */
139#define HDMI_HDCP_CONTROL 0xAF /* HDCP control */
140#define HDMI_RI_FRAME_COUNT_REGISTER 0xB2 /* Ri frame count register */
141#define HDMI_DDC_BUS_CONTROL 0xB7 /* DDC bus control */
142#define HDMI_HDCP_STATUS 0xB8 /* HDCP status */
143#define HDMI_SHA0 0xB9 /* sha0 */
144#define HDMI_SHA1 0xBA /* sha1 */
145#define HDMI_SHA2 0xBB /* sha2 */
146#define HDMI_SHA3 0xBC /* sha3 */
147#define HDMI_SHA4 0xBD /* sha4 */
148#define HDMI_BCAPS_READ 0xBE /* BCAPS read / debug */
149#define HDMI_AKSV_BKSV_7_0_MONITOR 0xBF /* AKSV/BKSV[7:0] monitor */
150#define HDMI_AKSV_BKSV_15_8_MONITOR 0xC0 /* AKSV/BKSV[15:8] monitor */
151#define HDMI_AKSV_BKSV_23_16_MONITOR 0xC1 /* AKSV/BKSV[23:16] monitor */
152#define HDMI_AKSV_BKSV_31_24_MONITOR 0xC2 /* AKSV/BKSV[31:24] monitor */
153#define HDMI_AKSV_BKSV_39_32_MONITOR 0xC3 /* AKSV/BKSV[39:32] monitor */
154#define HDMI_EDID_SEGMENT_POINTER 0xC4 /* EDID segment pointer */
155#define HDMI_EDID_WORD_ADDRESS 0xC5 /* EDID word address */
156#define HDMI_EDID_DATA_FIFO_ADDRESS 0xC6 /* EDID data FIFO address */
157#define HDMI_NUM_OF_HDMI_DEVICES 0xC7 /* Number of HDMI devices */
158#define HDMI_HDCP_ERROR_CODE 0xC8 /* HDCP error code */
159#define HDMI_100MS_TIMER_SET 0xC9 /* 100ms timer setting */
160#define HDMI_5SEC_TIMER_SET 0xCA /* 5sec timer setting */
161#define HDMI_RI_READ_COUNT 0xCB /* Ri read count */
162#define HDMI_AN_SEED 0xCC /* An seed */
163#define HDMI_MAX_NUM_OF_RCIVRS_ALLOWED 0xCD /* Maximum number of receivers allowed */
164#define HDMI_HDCP_MEMORY_ACCESS_CONTROL_1 0xCE /* HDCP memory access control.1 */
165#define HDMI_HDCP_MEMORY_ACCESS_CONTROL_2 0xCF /* HDCP memory access control.2 */
166#define HDMI_HDCP_CONTROL_2 0xD0 /* HDCP Control 2 */
167#define HDMI_HDCP_KEY_MEMORY_CONTROL 0xD2 /* HDCP Key Memory Control */
168#define HDMI_COLOR_SPACE_CONV_CONFIG_1 0xD3 /* Color space conversion configuration.1 */
169#define HDMI_VIDEO_SETTING_3 0xD4 /* Video setting.3 */
170#define HDMI_RI_7_0 0xD5 /* Ri[7:0] */
171#define HDMI_RI_15_8 0xD6 /* Ri[15:8] */
172#define HDMI_PJ 0xD7 /* Pj */
173#define HDMI_SHA_RD 0xD8 /* sha_rd */
174#define HDMI_RI_7_0_SAVED 0xD9 /* Ri[7:0] saved */
175#define HDMI_RI_15_8_SAVED 0xDA /* Ri[15:8] saved */
176#define HDMI_PJ_SAVED 0xDB /* Pj saved */
177#define HDMI_NUM_OF_DEVICES 0xDC /* Number of devices */
178#define HDMI_HOT_PLUG_MSENS_STATUS 0xDF /* Hot plug/MSENS status */
179#define HDMI_BCAPS_WRITE 0xE0 /* bcaps */
180#define HDMI_BSTAT_7_0 0xE1 /* bstat[7:0] */
181#define HDMI_BSTAT_15_8 0xE2 /* bstat[15:8] */
182#define HDMI_BKSV_7_0 0xE3 /* bksv[7:0] */
183#define HDMI_BKSV_15_8 0xE4 /* bksv[15:8] */
184#define HDMI_BKSV_23_16 0xE5 /* bksv[23:16] */
185#define HDMI_BKSV_31_24 0xE6 /* bksv[31:24] */
186#define HDMI_BKSV_39_32 0xE7 /* bksv[39:32] */
187#define HDMI_AN_7_0 0xE8 /* An[7:0] */
188#define HDMI_AN_15_8 0xE9 /* An [15:8] */
189#define HDMI_AN_23_16 0xEA /* An [23:16] */
190#define HDMI_AN_31_24 0xEB /* An [31:24] */
191#define HDMI_AN_39_32 0xEC /* An [39:32] */
192#define HDMI_AN_47_40 0xED /* An [47:40] */
193#define HDMI_AN_55_48 0xEE /* An [55:48] */
194#define HDMI_AN_63_56 0xEF /* An [63:56] */
195#define HDMI_PRODUCT_ID 0xF0 /* Product ID */
196#define HDMI_REVISION_ID 0xF1 /* Revision ID */
197#define HDMI_TEST_MODE 0xFE /* Test mode */
198
199enum hotplug_state {
200 HDMI_HOTPLUG_DISCONNECTED,
201 HDMI_HOTPLUG_CONNECTED,
202 HDMI_HOTPLUG_EDID_DONE,
203};
204
205struct sh_hdmi {
206 void __iomem *base;
207 enum hotplug_state hp_state;
208 struct clk *hdmi_clk;
209 struct device *dev;
210 struct fb_info *info;
211 struct delayed_work edid_work;
212 struct fb_var_screeninfo var;
213};
214
215static void hdmi_write(struct sh_hdmi *hdmi, u8 data, u8 reg)
216{
217 iowrite8(data, hdmi->base + reg);
218}
219
220static u8 hdmi_read(struct sh_hdmi *hdmi, u8 reg)
221{
222 return ioread8(hdmi->base + reg);
223}
224
225/* External video parameter settings */
226static void hdmi_external_video_param(struct sh_hdmi *hdmi)
227{
228 struct fb_var_screeninfo *var = &hdmi->var;
229 u16 htotal, hblank, hdelay, vtotal, vblank, vdelay, voffset;
230 u8 sync = 0;
231
232 htotal = var->xres + var->right_margin + var->left_margin + var->hsync_len;
233
234 hdelay = var->hsync_len + var->left_margin;
235 hblank = var->right_margin + hdelay;
236
237 /*
238 * Vertical timing looks a bit different in Figure 18,
239 * but let's try the same first by setting offset = 0
240 */
241 vtotal = var->yres + var->upper_margin + var->lower_margin + var->vsync_len;
242
243 vdelay = var->vsync_len + var->upper_margin;
244 vblank = var->lower_margin + vdelay;
245 voffset = min(var->upper_margin / 2, 6U);
246
247 /*
248 * [3]: VSYNC polarity: Positive
249 * [2]: HSYNC polarity: Positive
250 * [1]: Interlace/Progressive: Progressive
251 * [0]: External video settings enable: used.
252 */
253 if (var->sync & FB_SYNC_HOR_HIGH_ACT)
254 sync |= 4;
255 if (var->sync & FB_SYNC_VERT_HIGH_ACT)
256 sync |= 8;
257
258 pr_debug("H: %u, %u, %u, %u; V: %u, %u, %u, %u; sync 0x%x\n",
259 htotal, hblank, hdelay, var->hsync_len,
260 vtotal, vblank, vdelay, var->vsync_len, sync);
261
262 hdmi_write(hdmi, sync | (voffset << 4), HDMI_EXTERNAL_VIDEO_PARAM_SETTINGS);
263
264 hdmi_write(hdmi, htotal, HDMI_EXTERNAL_H_TOTAL_7_0);
265 hdmi_write(hdmi, htotal >> 8, HDMI_EXTERNAL_H_TOTAL_11_8);
266
267 hdmi_write(hdmi, hblank, HDMI_EXTERNAL_H_BLANK_7_0);
268 hdmi_write(hdmi, hblank >> 8, HDMI_EXTERNAL_H_BLANK_9_8);
269
270 hdmi_write(hdmi, hdelay, HDMI_EXTERNAL_H_DELAY_7_0);
271 hdmi_write(hdmi, hdelay >> 8, HDMI_EXTERNAL_H_DELAY_9_8);
272
273 hdmi_write(hdmi, var->hsync_len, HDMI_EXTERNAL_H_DURATION_7_0);
274 hdmi_write(hdmi, var->hsync_len >> 8, HDMI_EXTERNAL_H_DURATION_9_8);
275
276 hdmi_write(hdmi, vtotal, HDMI_EXTERNAL_V_TOTAL_7_0);
277 hdmi_write(hdmi, vtotal >> 8, HDMI_EXTERNAL_V_TOTAL_9_8);
278
279 hdmi_write(hdmi, vblank, HDMI_EXTERNAL_V_BLANK);
280
281 hdmi_write(hdmi, vdelay, HDMI_EXTERNAL_V_DELAY);
282
283 hdmi_write(hdmi, var->vsync_len, HDMI_EXTERNAL_V_DURATION);
284
285 /* Set bit 0 of HDMI_EXTERNAL_VIDEO_PARAM_SETTINGS here for manual mode */
286}
287
288/**
289 * sh_hdmi_video_config()
290 */
291static void sh_hdmi_video_config(struct sh_hdmi *hdmi)
292{
293 /*
294 * [7:4]: Audio sampling frequency: 48kHz
295 * [3:1]: Input video format: RGB and YCbCr 4:4:4 (Y on Green)
296 * [0]: Internal/External DE select: internal
297 */
298 hdmi_write(hdmi, 0x20, HDMI_AUDIO_VIDEO_SETTING_1);
299
300 /*
301 * [7:6]: Video output format: RGB 4:4:4
302 * [5:4]: Input video data width: 8 bit
303 * [3:1]: EAV/SAV location: channel 1
304 * [0]: Video input color space: RGB
305 */
306 hdmi_write(hdmi, 0x34, HDMI_VIDEO_SETTING_1);
307
308 /*
309 * [7:6]: Together with bit [6] of HDMI_AUDIO_VIDEO_SETTING_2, which is
310 * left at 0 by default, this configures 24bpp and sets the Color Depth
311 * (CD) field in the General Control Packet
312 */
313 hdmi_write(hdmi, 0x20, HDMI_DEEP_COLOR_MODES);
314}
315
316/**
317 * sh_hdmi_audio_config()
318 */
319static void sh_hdmi_audio_config(struct sh_hdmi *hdmi)
320{
321 /*
322 * [7:4] L/R data swap control
323 * [3:0] appropriate N[19:16]
324 */
325 hdmi_write(hdmi, 0x00, HDMI_L_R_DATA_SWAP_CTRL_RPKT);
326 /* appropriate N[15:8] */
327 hdmi_write(hdmi, 0x18, HDMI_20_BIT_N_FOR_AUDIO_RPKT_15_8);
328 /* appropriate N[7:0] */
329 hdmi_write(hdmi, 0x00, HDMI_20_BIT_N_FOR_AUDIO_RPKT_7_0);
330
331 /* [7:4] 48 kHz SPDIF not used */
332 hdmi_write(hdmi, 0x20, HDMI_SPDIF_AUDIO_SAMP_FREQ_CTS);
333
334 /*
335 * [6:5] set required down sampling rate if required
336 * [4:3] set required audio source
337 */
338 hdmi_write(hdmi, 0x00, HDMI_AUDIO_SETTING_1);
339
340 /* [3:0] set sending channel number for channel status */
341 hdmi_write(hdmi, 0x40, HDMI_AUDIO_SETTING_2);
342
343 /*
344 * [5:2] set valid I2S source input pin
345 * [1:0] set input I2S source mode
346 */
347 hdmi_write(hdmi, 0x04, HDMI_I2S_AUDIO_SET);
348
349 /* [7:4] set valid DSD source input pin */
350 hdmi_write(hdmi, 0x00, HDMI_DSD_AUDIO_SET);
351
352 /* [7:0] set appropriate I2S input pin swap settings if required */
353 hdmi_write(hdmi, 0x00, HDMI_I2S_INPUT_PIN_SWAP);
354
355 /*
356 * [7] set validity bit for channel status
357 * [3:0] set original sample frequency for channel status
358 */
359 hdmi_write(hdmi, 0x00, HDMI_AUDIO_STATUS_BITS_SETTING_1);
360
361 /*
362 * [7] set value for channel status
363 * [6] set value for channel status
364 * [5] set copyright bit for channel status
365 * [4:2] set additional information for channel status
366 * [1:0] set clock accuracy for channel status
367 */
368 hdmi_write(hdmi, 0x00, HDMI_AUDIO_STATUS_BITS_SETTING_2);
369
370 /* [7:0] set category code for channel status */
371 hdmi_write(hdmi, 0x00, HDMI_CATEGORY_CODE);
372
373 /*
374 * [7:4] set source number for channel status
375 * [3:0] set word length for channel status
376 */
377 hdmi_write(hdmi, 0x00, HDMI_SOURCE_NUM_AUDIO_WORD_LEN);
378
379 /* [7:4] set sample frequency for channel status */
380 hdmi_write(hdmi, 0x20, HDMI_AUDIO_VIDEO_SETTING_1);
381}
382
383/**
384 * sh_hdmi_phy_config()
385 */
386static void sh_hdmi_phy_config(struct sh_hdmi *hdmi)
387{
388 /* 720p, 8bit, 74.25MHz. Might need to be adjusted for other formats */
389 hdmi_write(hdmi, 0x19, HDMI_SLIPHDMIT_PARAM_SETTINGS_1);
390 hdmi_write(hdmi, 0x00, HDMI_SLIPHDMIT_PARAM_SETTINGS_2);
391 hdmi_write(hdmi, 0x00, HDMI_SLIPHDMIT_PARAM_SETTINGS_3);
392 /* PLLA_CONFIG[7:0]: VCO gain, VCO offset, LPF resistance[0] */
393 hdmi_write(hdmi, 0x44, HDMI_SLIPHDMIT_PARAM_SETTINGS_5);
394 hdmi_write(hdmi, 0x32, HDMI_SLIPHDMIT_PARAM_SETTINGS_6);
395 hdmi_write(hdmi, 0x4A, HDMI_SLIPHDMIT_PARAM_SETTINGS_7);
396 hdmi_write(hdmi, 0x0E, HDMI_SLIPHDMIT_PARAM_SETTINGS_8);
397 hdmi_write(hdmi, 0x25, HDMI_SLIPHDMIT_PARAM_SETTINGS_9);
398 hdmi_write(hdmi, 0x04, HDMI_SLIPHDMIT_PARAM_SETTINGS_10);
399}
400
401/**
402 * sh_hdmi_avi_infoframe_setup() - Auxiliary Video Information InfoFrame CONTROL PACKET
403 */
404static void sh_hdmi_avi_infoframe_setup(struct sh_hdmi *hdmi)
405{
406 /* AVI InfoFrame */
407 hdmi_write(hdmi, 0x06, HDMI_CTRL_PKT_BUF_INDEX);
408
409 /* Packet Type = 0x82 */
410 hdmi_write(hdmi, 0x82, HDMI_CTRL_PKT_BUF_ACCESS_HB0);
411
412 /* Version = 0x02 */
413 hdmi_write(hdmi, 0x02, HDMI_CTRL_PKT_BUF_ACCESS_HB1);
414
415 /* Length = 13 (0x0D) */
416 hdmi_write(hdmi, 0x0D, HDMI_CTRL_PKT_BUF_ACCESS_HB2);
417
418 /* N. A. Checksum */
419 hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB0);
420
421 /*
422 * Y = RGB
423 * A0 = No Data
424 * B = Bar Data not valid
425 * S = No Data
426 */
427 hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB1);
428
429 /*
430 * C = No Data
431 * M = 16:9 Picture Aspect Ratio
432 * R = Same as picture aspect ratio
433 */
434 hdmi_write(hdmi, 0x28, HDMI_CTRL_PKT_BUF_ACCESS_PB2);
435
436 /*
437 * ITC = No Data
438 * EC = xvYCC601
439 * Q = Default (depends on video format)
440 * SC = No Known non_uniform Scaling
441 */
442 hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB3);
443
444 /*
445 * VIC = 1280 x 720p: ignored if external config is used
446 * Send 2 for 720 x 480p, 16 for 1080p
447 */
448 hdmi_write(hdmi, 4, HDMI_CTRL_PKT_BUF_ACCESS_PB4);
449
450 /* PR = No Repetition */
451 hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB5);
452
453 /* Line Number of End of Top Bar (lower 8 bits) */
454 hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB6);
455
456 /* Line Number of End of Top Bar (upper 8 bits) */
457 hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB7);
458
459 /* Line Number of Start of Bottom Bar (lower 8 bits) */
460 hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB8);
461
462 /* Line Number of Start of Bottom Bar (upper 8 bits) */
463 hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB9);
464
465 /* Pixel Number of End of Left Bar (lower 8 bits) */
466 hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB10);
467
468 /* Pixel Number of End of Left Bar (upper 8 bits) */
469 hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB11);
470
471 /* Pixel Number of Start of Right Bar (lower 8 bits) */
472 hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB12);
473
474 /* Pixel Number of Start of Right Bar (upper 8 bits) */
475 hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB13);
476}
477
478/**
479 * sh_hdmi_audio_infoframe_setup() - Audio InfoFrame of CONTROL PACKET
480 */
481static void sh_hdmi_audio_infoframe_setup(struct sh_hdmi *hdmi)
482{
483 /* Audio InfoFrame */
484 hdmi_write(hdmi, 0x08, HDMI_CTRL_PKT_BUF_INDEX);
485
486 /* Packet Type = 0x84 */
487 hdmi_write(hdmi, 0x84, HDMI_CTRL_PKT_BUF_ACCESS_HB0);
488
489 /* Version Number = 0x01 */
490 hdmi_write(hdmi, 0x01, HDMI_CTRL_PKT_BUF_ACCESS_HB1);
491
492 /* 0 Length = 10 (0x0A) */
493 hdmi_write(hdmi, 0x0A, HDMI_CTRL_PKT_BUF_ACCESS_HB2);
494
495 /* n. a. Checksum */
496 hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB0);
497
498 /* Audio Channel Count = Refer to Stream Header */
499 hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB1);
500
501 /* Refer to Stream Header */
502 hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB2);
503
504 /* Format depends on coding type (i.e. CT0...CT3) */
505 hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB3);
506
507 /* Speaker Channel Allocation = Front Right + Front Left */
508 hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB4);
509
510 /* Level Shift Value = 0 dB, Down - mix is permitted or no information */
511 hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB5);
512
513 /* Reserved (0) */
514 hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB6);
515 hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB7);
516 hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB8);
517 hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB9);
518 hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB10);
519}
520
521/**
522 * sh_hdmi_gamut_metadata_setup() - Gamut Metadata Packet of CONTROL PACKET
523 */
524static void sh_hdmi_gamut_metadata_setup(struct sh_hdmi *hdmi)
525{
526 int i;
527
528 /* Gamut Metadata Packet */
529 hdmi_write(hdmi, 0x04, HDMI_CTRL_PKT_BUF_INDEX);
530
531 /* Packet Type = 0x0A */
532 hdmi_write(hdmi, 0x0A, HDMI_CTRL_PKT_BUF_ACCESS_HB0);
533 /* Gamut Packet is not used, so default value */
534 hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_HB1);
535 /* Gamut Packet is not used, so default value */
536 hdmi_write(hdmi, 0x10, HDMI_CTRL_PKT_BUF_ACCESS_HB2);
537
538 /* GBD bytes 0 through 27 */
539 for (i = 0; i <= 27; i++)
540 /* HDMI_CTRL_PKT_BUF_ACCESS_PB0_63H - PB27_7EH */
541 hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB0 + i);
542}
543
544/**
545 * sh_hdmi_acp_setup() - Audio Content Protection Packet (ACP)
546 */
547static void sh_hdmi_acp_setup(struct sh_hdmi *hdmi)
548{
549 int i;
550
551 /* Audio Content Protection Packet (ACP) */
552 hdmi_write(hdmi, 0x01, HDMI_CTRL_PKT_BUF_INDEX);
553
554 /* Packet Type = 0x04 */
555 hdmi_write(hdmi, 0x04, HDMI_CTRL_PKT_BUF_ACCESS_HB0);
556 /* ACP_Type */
557 hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_HB1);
558 /* Reserved (0) */
559 hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_HB2);
560
561 /* GBD bytes 0 through 27 */
562 for (i = 0; i <= 27; i++)
563 /* HDMI_CTRL_PKT_BUF_ACCESS_PB0 - PB27 */
564 hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB0 + i);
565}
566
567/**
568 * sh_hdmi_isrc1_setup() - ISRC1 Packet
569 */
570static void sh_hdmi_isrc1_setup(struct sh_hdmi *hdmi)
571{
572 int i;
573
574 /* ISRC1 Packet */
575 hdmi_write(hdmi, 0x02, HDMI_CTRL_PKT_BUF_INDEX);
576
577 /* Packet Type = 0x05 */
578 hdmi_write(hdmi, 0x05, HDMI_CTRL_PKT_BUF_ACCESS_HB0);
579 /* ISRC_Cont, ISRC_Valid, Reserved (0), ISRC_Status */
580 hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_HB1);
581 /* Reserved (0) */
582 hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_HB2);
583
584 /* PB0 UPC_EAN_ISRC_0-15 */
585 /* Bytes PB16-PB27 shall be set to a value of 0. */
586 for (i = 0; i <= 27; i++)
587 /* HDMI_CTRL_PKT_BUF_ACCESS_PB0 - PB27 */
588 hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB0 + i);
589}
590
591/**
592 * sh_hdmi_isrc2_setup() - ISRC2 Packet
593 */
594static void sh_hdmi_isrc2_setup(struct sh_hdmi *hdmi)
595{
596 int i;
597
598 /* ISRC2 Packet */
599 hdmi_write(hdmi, 0x03, HDMI_CTRL_PKT_BUF_INDEX);
600
601 /* HB0 Packet Type = 0x06 */
602 hdmi_write(hdmi, 0x06, HDMI_CTRL_PKT_BUF_ACCESS_HB0);
603 /* Reserved (0) */
604 hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_HB1);
605 /* Reserved (0) */
606 hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_HB2);
607
608 /* PB0 UPC_EAN_ISRC_16-31 */
609 /* Bytes PB16-PB27 shall be set to a value of 0. */
610 for (i = 0; i <= 27; i++)
611 /* HDMI_CTRL_PKT_BUF_ACCESS_PB0 - PB27 */
612 hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB0 + i);
613}
614
615/**
616 * sh_hdmi_configure() - Initialise HDMI for output
617 */
618static void sh_hdmi_configure(struct sh_hdmi *hdmi)
619{
620 /* Configure video format */
621 sh_hdmi_video_config(hdmi);
622
623 /* Configure audio format */
624 sh_hdmi_audio_config(hdmi);
625
626 /* Configure PHY */
627 sh_hdmi_phy_config(hdmi);
628
629 /* Auxiliary Video Information (AVI) InfoFrame */
630 sh_hdmi_avi_infoframe_setup(hdmi);
631
632 /* Audio InfoFrame */
633 sh_hdmi_audio_infoframe_setup(hdmi);
634
635 /* Gamut Metadata packet */
636 sh_hdmi_gamut_metadata_setup(hdmi);
637
638 /* Audio Content Protection (ACP) Packet */
639 sh_hdmi_acp_setup(hdmi);
640
641 /* ISRC1 Packet */
642 sh_hdmi_isrc1_setup(hdmi);
643
644 /* ISRC2 Packet */
645 sh_hdmi_isrc2_setup(hdmi);
646
647 /*
648 * Control packet auto send with VSYNC control: auto send
649 * General control, Gamut metadata, ISRC, and ACP packets
650 */
651 hdmi_write(hdmi, 0x8E, HDMI_CTRL_PKT_AUTO_SEND);
652
653 /* FIXME */
654 msleep(10);
655
656 /* PS mode b->d, reset PLLA and PLLB */
657 hdmi_write(hdmi, 0x4C, HDMI_SYSTEM_CTRL);
658
659 udelay(10);
660
661 hdmi_write(hdmi, 0x40, HDMI_SYSTEM_CTRL);
662}
663
664static void sh_hdmi_read_edid(struct sh_hdmi *hdmi)
665{
666 struct fb_var_screeninfo *var = &hdmi->var;
667 struct sh_mobile_hdmi_info *pdata = hdmi->dev->platform_data;
668 struct fb_videomode *lcd_cfg = &pdata->lcd_chan->lcd_cfg;
669 unsigned long height = var->height, width = var->width;
670 int i;
671 u8 edid[128];
672
673 /* Read EDID */
674 pr_debug("Read back EDID code:");
675 for (i = 0; i < 128; i++) {
676 edid[i] = hdmi_read(hdmi, HDMI_EDID_KSV_FIFO_ACCESS_WINDOW);
677#ifdef DEBUG
678 if ((i % 16) == 0) {
679 printk(KERN_CONT "\n");
680 printk(KERN_DEBUG "%02X | %02X", i, edid[i]);
681 } else {
682 printk(KERN_CONT " %02X", edid[i]);
683 }
684#endif
685 }
686#ifdef DEBUG
687 printk(KERN_CONT "\n");
688#endif
689 fb_parse_edid(edid, var);
690 pr_debug("%u-%u-%u-%u x %u-%u-%u-%u @ %lu kHz monitor detected\n",
691 var->left_margin, var->xres, var->right_margin, var->hsync_len,
692 var->upper_margin, var->yres, var->lower_margin, var->vsync_len,
693 PICOS2KHZ(var->pixclock));
694
695 /* FIXME: Use user-provided configuration instead of EDID */
696 var->width = width;
697 var->xres = lcd_cfg->xres;
698 var->xres_virtual = lcd_cfg->xres;
699 var->left_margin = lcd_cfg->left_margin;
700 var->right_margin = lcd_cfg->right_margin;
701 var->hsync_len = lcd_cfg->hsync_len;
702 var->height = height;
703 var->yres = lcd_cfg->yres;
704 var->yres_virtual = lcd_cfg->yres * 2;
705 var->upper_margin = lcd_cfg->upper_margin;
706 var->lower_margin = lcd_cfg->lower_margin;
707 var->vsync_len = lcd_cfg->vsync_len;
708 var->sync = lcd_cfg->sync;
709 var->pixclock = lcd_cfg->pixclock;
710
711 hdmi_external_video_param(hdmi);
712}
713
714static irqreturn_t sh_hdmi_hotplug(int irq, void *dev_id)
715{
716 struct sh_hdmi *hdmi = dev_id;
717 u8 status1, status2, mask1, mask2;
718
719 /* mode_b and PLLA and PLLB reset */
720 hdmi_write(hdmi, 0x2C, HDMI_SYSTEM_CTRL);
721
722 /* How long shall reset be held? */
723 udelay(10);
724
725 /* mode_b and PLLA and PLLB reset release */
726 hdmi_write(hdmi, 0x20, HDMI_SYSTEM_CTRL);
727
728 status1 = hdmi_read(hdmi, HDMI_INTERRUPT_STATUS_1);
729 status2 = hdmi_read(hdmi, HDMI_INTERRUPT_STATUS_2);
730
731 mask1 = hdmi_read(hdmi, HDMI_INTERRUPT_MASK_1);
732 mask2 = hdmi_read(hdmi, HDMI_INTERRUPT_MASK_2);
733
734 /* Correct would be to ack only set bits, but the datasheet requires 0xff */
735 hdmi_write(hdmi, 0xFF, HDMI_INTERRUPT_STATUS_1);
736 hdmi_write(hdmi, 0xFF, HDMI_INTERRUPT_STATUS_2);
737
738 if (printk_ratelimit())
739 pr_debug("IRQ #%d: Status #1: 0x%x & 0x%x, #2: 0x%x & 0x%x\n",
740 irq, status1, mask1, status2, mask2);
741
742 if (!((status1 & mask1) | (status2 & mask2))) {
743 return IRQ_NONE;
744 } else if (status1 & 0xc0) {
745 u8 msens;
746
747 /* Datasheet specifies 10ms... */
748 udelay(500);
749
750 msens = hdmi_read(hdmi, HDMI_HOT_PLUG_MSENS_STATUS);
751 pr_debug("MSENS 0x%x\n", msens);
752 /* Check, if hot plug & MSENS pin status are both high */
753 if ((msens & 0xC0) == 0xC0) {
754 /* Display plug in */
755 hdmi->hp_state = HDMI_HOTPLUG_CONNECTED;
756
757 /* Set EDID word address */
758 hdmi_write(hdmi, 0x00, HDMI_EDID_WORD_ADDRESS);
759 /* Set EDID segment pointer */
760 hdmi_write(hdmi, 0x00, HDMI_EDID_SEGMENT_POINTER);
761 /* Enable EDID interrupt */
762 hdmi_write(hdmi, 0xC6, HDMI_INTERRUPT_MASK_1);
763 } else if (!(status1 & 0x80)) {
764 /* Display unplug, beware multiple interrupts */
765 if (hdmi->hp_state != HDMI_HOTPLUG_DISCONNECTED)
766 schedule_delayed_work(&hdmi->edid_work, 0);
767
768 hdmi->hp_state = HDMI_HOTPLUG_DISCONNECTED;
769 /* display_off will switch back to mode_a */
770 }
771 } else if (status1 & 2) {
772 /* EDID error interrupt: retry */
773 /* Set EDID word address */
774 hdmi_write(hdmi, 0x00, HDMI_EDID_WORD_ADDRESS);
775 /* Set EDID segment pointer */
776 hdmi_write(hdmi, 0x00, HDMI_EDID_SEGMENT_POINTER);
777 } else if (status1 & 4) {
778 /* Disable EDID interrupt */
779 hdmi_write(hdmi, 0xC0, HDMI_INTERRUPT_MASK_1);
780 hdmi->hp_state = HDMI_HOTPLUG_EDID_DONE;
781 schedule_delayed_work(&hdmi->edid_work, msecs_to_jiffies(10));
782 }
783
784 return IRQ_HANDLED;
785}
786
787static void hdmi_display_on(void *arg, struct fb_info *info)
788{
789 struct sh_hdmi *hdmi = arg;
790 struct sh_mobile_hdmi_info *pdata = hdmi->dev->platform_data;
791
792 if (info->var.xres != 1280 || info->var.yres != 720) {
793 dev_warn(info->device, "Unsupported framebuffer geometry %ux%u\n",
794 info->var.xres, info->var.yres);
795 return;
796 }
797
798 pr_debug("%s(%p): state %x\n", __func__, pdata->lcd_dev, info->state);
799 /*
800 * FIXME: not a good place to store fb_info. And we cannot nullify it
801 * even on monitor disconnect. What should the lifecycle be?
802 */
803 hdmi->info = info;
804 switch (hdmi->hp_state) {
805 case HDMI_HOTPLUG_EDID_DONE:
806 /* PS mode d->e. All functions are active */
807 hdmi_write(hdmi, 0x80, HDMI_SYSTEM_CTRL);
808 pr_debug("HDMI running\n");
809 break;
810 case HDMI_HOTPLUG_DISCONNECTED:
811 info->state = FBINFO_STATE_SUSPENDED;
812 default:
813 hdmi->var = info->var;
814 }
815}
816
817static void hdmi_display_off(void *arg)
818{
819 struct sh_hdmi *hdmi = arg;
820 struct sh_mobile_hdmi_info *pdata = hdmi->dev->platform_data;
821
822 pr_debug("%s(%p)\n", __func__, pdata->lcd_dev);
823 /* PS mode e->a */
824 hdmi_write(hdmi, 0x10, HDMI_SYSTEM_CTRL);
825}
826
827/* Hotplug interrupt occurred, read EDID */
828static void edid_work_fn(struct work_struct *work)
829{
830 struct sh_hdmi *hdmi = container_of(work, struct sh_hdmi, edid_work.work);
831 struct sh_mobile_hdmi_info *pdata = hdmi->dev->platform_data;
832
833 pr_debug("%s(%p): begin, hotplug status %d\n", __func__,
834 pdata->lcd_dev, hdmi->hp_state);
835
836 if (!pdata->lcd_dev)
837 return;
838
839 if (hdmi->hp_state == HDMI_HOTPLUG_EDID_DONE) {
840 pm_runtime_get_sync(hdmi->dev);
841 /* A device has been plugged in */
842 sh_hdmi_read_edid(hdmi);
843 msleep(10);
844 sh_hdmi_configure(hdmi);
845 /* Switched to another (d) power-save mode */
846 msleep(10);
847
848 if (!hdmi->info)
849 return;
850
851 acquire_console_sem();
852
853 /* HDMI plug in */
854 hdmi->info->var = hdmi->var;
855 if (hdmi->info->state != FBINFO_STATE_RUNNING)
856 fb_set_suspend(hdmi->info, 0);
857 else
858 hdmi_display_on(hdmi, hdmi->info);
859
860 release_console_sem();
861 } else {
862 if (!hdmi->info)
863 return;
864
865 acquire_console_sem();
866
867 /* HDMI disconnect */
868 fb_set_suspend(hdmi->info, 1);
869
870 release_console_sem();
871 pm_runtime_put(hdmi->dev);
872 }
873
874 pr_debug("%s(%p): end\n", __func__, pdata->lcd_dev);
875}
876
877static int __init sh_hdmi_probe(struct platform_device *pdev)
878{
879 struct sh_mobile_hdmi_info *pdata = pdev->dev.platform_data;
880 struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
881 int irq = platform_get_irq(pdev, 0), ret;
882 struct sh_hdmi *hdmi;
883 long rate;
884
885 if (!res || !pdata || irq < 0)
886 return -ENODEV;
887
888 hdmi = kzalloc(sizeof(*hdmi), GFP_KERNEL);
889 if (!hdmi) {
890 dev_err(&pdev->dev, "Cannot allocate device data\n");
891 return -ENOMEM;
892 }
893
894 hdmi->dev = &pdev->dev;
895
896 hdmi->hdmi_clk = clk_get(&pdev->dev, "ick");
897 if (IS_ERR(hdmi->hdmi_clk)) {
898 ret = PTR_ERR(hdmi->hdmi_clk);
899 dev_err(&pdev->dev, "Unable to get clock: %d\n", ret);
900 goto egetclk;
901 }
902
903 rate = PICOS2KHZ(pdata->lcd_chan->lcd_cfg.pixclock) * 1000;
904
905 rate = clk_round_rate(hdmi->hdmi_clk, rate);
906 if (rate < 0) {
907 ret = rate;
908 dev_err(&pdev->dev, "Cannot get suitable rate: %ld\n", rate);
909 goto erate;
910 }
911
912 ret = clk_set_rate(hdmi->hdmi_clk, rate);
913 if (ret < 0) {
914 dev_err(&pdev->dev, "Cannot set rate %ld: %d\n", rate, ret);
915 goto erate;
916 }
917
918 pr_debug("HDMI set frequency %lu\n", rate);
919
920 ret = clk_enable(hdmi->hdmi_clk);
921 if (ret < 0) {
922 dev_err(&pdev->dev, "Cannot enable clock: %d\n", ret);
923 goto eclkenable;
924 }
925
926 dev_info(&pdev->dev, "Enabled HDMI clock at %luHz\n", rate);
927
928 if (!request_mem_region(res->start, resource_size(res), dev_name(&pdev->dev))) {
929 dev_err(&pdev->dev, "HDMI register region already claimed\n");
930 ret = -EBUSY;
931 goto ereqreg;
932 }
933
934 hdmi->base = ioremap(res->start, resource_size(res));
935 if (!hdmi->base) {
936 dev_err(&pdev->dev, "HDMI register region already claimed\n");
937 ret = -ENOMEM;
938 goto emap;
939 }
940
941 platform_set_drvdata(pdev, hdmi);
942
943#if 1
944 /* Product and revision IDs are 0 in sh-mobile version */
945 dev_info(&pdev->dev, "Detected HDMI controller 0x%x:0x%x\n",
946 hdmi_read(hdmi, HDMI_PRODUCT_ID), hdmi_read(hdmi, HDMI_REVISION_ID));
947#endif
948
949 /* Set up LCDC callbacks */
950 pdata->lcd_chan->board_cfg.board_data = hdmi;
951 pdata->lcd_chan->board_cfg.display_on = hdmi_display_on;
952 pdata->lcd_chan->board_cfg.display_off = hdmi_display_off;
953
954 INIT_DELAYED_WORK(&hdmi->edid_work, edid_work_fn);
955
956 pm_runtime_enable(&pdev->dev);
957 pm_runtime_resume(&pdev->dev);
958
959 ret = request_irq(irq, sh_hdmi_hotplug, 0,
960 dev_name(&pdev->dev), hdmi);
961 if (ret < 0) {
962 dev_err(&pdev->dev, "Unable to request irq: %d\n", ret);
963 goto ereqirq;
964 }
965
966 return 0;
967
968ereqirq:
969 pm_runtime_disable(&pdev->dev);
970 iounmap(hdmi->base);
971emap:
972 release_mem_region(res->start, resource_size(res));
973ereqreg:
974 clk_disable(hdmi->hdmi_clk);
975eclkenable:
976erate:
977 clk_put(hdmi->hdmi_clk);
978egetclk:
979 kfree(hdmi);
980
981 return ret;
982}
983
984static int __exit sh_hdmi_remove(struct platform_device *pdev)
985{
986 struct sh_mobile_hdmi_info *pdata = pdev->dev.platform_data;
987 struct sh_hdmi *hdmi = platform_get_drvdata(pdev);
988 struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
989 int irq = platform_get_irq(pdev, 0);
990
991 pdata->lcd_chan->board_cfg.display_on = NULL;
992 pdata->lcd_chan->board_cfg.display_off = NULL;
993 pdata->lcd_chan->board_cfg.board_data = NULL;
994
995 free_irq(irq, hdmi);
996 pm_runtime_disable(&pdev->dev);
997 cancel_delayed_work_sync(&hdmi->edid_work);
998 clk_disable(hdmi->hdmi_clk);
999 clk_put(hdmi->hdmi_clk);
1000 iounmap(hdmi->base);
1001 release_mem_region(res->start, resource_size(res));
1002 kfree(hdmi);
1003
1004 return 0;
1005}
1006
1007static struct platform_driver sh_hdmi_driver = {
1008 .remove = __exit_p(sh_hdmi_remove),
1009 .driver = {
1010 .name = "sh-mobile-hdmi",
1011 },
1012};
1013
1014static int __init sh_hdmi_init(void)
1015{
1016 return platform_driver_probe(&sh_hdmi_driver, sh_hdmi_probe);
1017}
1018module_init(sh_hdmi_init);
1019
1020static void __exit sh_hdmi_exit(void)
1021{
1022 platform_driver_unregister(&sh_hdmi_driver);
1023}
1024module_exit(sh_hdmi_exit);
1025
1026MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");
1027MODULE_DESCRIPTION("SuperH / ARM-shmobile HDMI driver");
1028MODULE_LICENSE("GPL v2");
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-20 05:44:05 -0500