1 /*
2  * Copyright (C) 2011
3  * Stefano Babic, DENX Software Engineering, sbabic@denx.de.
4  *
5  * Copyright (C) 2009 TechNexion Ltd.
6  *
7  * SPDX-License-Identifier:	GPL-2.0+
8  */
9 
10 #include <common.h>
11 #include <netdev.h>
12 #include <malloc.h>
13 #include <fpga.h>
14 #include <video_fb.h>
15 #include <asm/io.h>
16 #include <asm/arch/mem.h>
17 #include <asm/arch/mux.h>
18 #include <asm/arch/sys_proto.h>
19 #include <asm/omap_gpio.h>
20 #include <asm/arch/mmc_host_def.h>
21 #include <asm/arch/dss.h>
22 #include <asm/arch/clock.h>
23 #include <i2c.h>
24 #include <spartan3.h>
25 #include <asm/gpio.h>
26 #ifdef CONFIG_USB_EHCI_HCD
27 #include <usb.h>
28 #include <asm/ehci-omap.h>
29 #endif
30 #include "mt_ventoux.h"
31 
32 DECLARE_GLOBAL_DATA_PTR;
33 
34 #define BUZZER		140
35 #define SPEAKER		141
36 #define USB1_PWR	127
37 #define USB2_PWR	149
38 
39 #ifndef CONFIG_FPGA
40 #error "The Teejet mt_ventoux must have CONFIG_FPGA enabled"
41 #endif
42 
43 #define FPGA_RESET	62
44 #define FPGA_PROG	116
45 #define FPGA_CCLK	117
46 #define FPGA_DIN	118
47 #define FPGA_INIT	119
48 #define FPGA_DONE	154
49 
50 #define LCD_PWR		138
51 #define LCD_PON_PIN	139
52 
53 #if defined(CONFIG_VIDEO) && !defined(CONFIG_SPL_BUILD)
54 static struct {
55 	u32 xres;
56 	u32 yres;
57 } panel_resolution[] = {
58 	{ 480, 272 },
59 	{ 800, 480 }
60 };
61 
62 static struct panel_config lcd_cfg[] = {
63 	{
64 	.timing_h       = PANEL_TIMING_H(40, 5, 2),
65 	.timing_v       = PANEL_TIMING_V(8, 8, 2),
66 	.pol_freq       = 0x00003000, /* Pol Freq */
67 	.divisor        = 0x00010033, /* 9 Mhz Pixel Clock */
68 	.panel_type     = 0x01, /* TFT */
69 	.data_lines     = 0x03, /* 24 Bit RGB */
70 	.load_mode      = 0x02, /* Frame Mode */
71 	.panel_color	= 0,
72 	.gfx_format	= GFXFORMAT_RGB24_UNPACKED,
73 	},
74 	{
75 	.timing_h       = PANEL_TIMING_H(20, 192, 4),
76 	.timing_v       = PANEL_TIMING_V(2, 20, 10),
77 	.pol_freq       = 0x00004000, /* Pol Freq */
78 	.divisor        = 0x0001000E, /* 36Mhz Pixel Clock */
79 	.panel_type     = 0x01, /* TFT */
80 	.data_lines     = 0x03, /* 24 Bit RGB */
81 	.load_mode      = 0x02, /* Frame Mode */
82 	.panel_color	= 0,
83 	.gfx_format	= GFXFORMAT_RGB24_UNPACKED,
84 	}
85 };
86 #endif
87 
88 /* Timing definitions for FPGA */
89 static const u32 gpmc_fpga[] = {
90 	FPGA_GPMC_CONFIG1,
91 	FPGA_GPMC_CONFIG2,
92 	FPGA_GPMC_CONFIG3,
93 	FPGA_GPMC_CONFIG4,
94 	FPGA_GPMC_CONFIG5,
95 	FPGA_GPMC_CONFIG6,
96 };
97 
98 #ifdef CONFIG_USB_EHCI_HCD
99 static struct omap_usbhs_board_data usbhs_bdata = {
100 	.port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
101 	.port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
102 	.port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
103 };
104 
105 int ehci_hcd_init(int index, enum usb_init_type init,
106 		struct ehci_hccr **hccr, struct ehci_hcor **hcor)
107 {
108 	return omap_ehci_hcd_init(index, &usbhs_bdata, hccr, hcor);
109 }
110 
111 int ehci_hcd_stop(int index)
112 {
113 	return omap_ehci_hcd_stop();
114 }
115 #endif
116 
117 
118 static inline void fpga_reset(int nassert)
119 {
120 	gpio_set_value(FPGA_RESET, !nassert);
121 }
122 
123 int fpga_pgm_fn(int nassert, int nflush, int cookie)
124 {
125 	debug("%s:%d: FPGA PROGRAM ", __func__, __LINE__);
126 
127 	gpio_set_value(FPGA_PROG, !nassert);
128 
129 	return nassert;
130 }
131 
132 int fpga_init_fn(int cookie)
133 {
134 	return !gpio_get_value(FPGA_INIT);
135 }
136 
137 int fpga_done_fn(int cookie)
138 {
139 	return gpio_get_value(FPGA_DONE);
140 }
141 
142 int fpga_pre_config_fn(int cookie)
143 {
144 	debug("%s:%d: FPGA pre-configuration\n", __func__, __LINE__);
145 
146 	/* Setting GPIOs for programming Mode */
147 	gpio_request(FPGA_RESET, "FPGA_RESET");
148 	gpio_direction_output(FPGA_RESET, 1);
149 	gpio_request(FPGA_PROG, "FPGA_PROG");
150 	gpio_direction_output(FPGA_PROG, 1);
151 	gpio_request(FPGA_CCLK, "FPGA_CCLK");
152 	gpio_direction_output(FPGA_CCLK, 1);
153 	gpio_request(FPGA_DIN, "FPGA_DIN");
154 	gpio_direction_output(FPGA_DIN, 0);
155 	gpio_request(FPGA_INIT, "FPGA_INIT");
156 	gpio_direction_input(FPGA_INIT);
157 	gpio_request(FPGA_DONE, "FPGA_DONE");
158 	gpio_direction_input(FPGA_DONE);
159 
160 	/* Be sure that signal are deasserted */
161 	gpio_set_value(FPGA_RESET, 1);
162 	gpio_set_value(FPGA_PROG, 1);
163 
164 	return 0;
165 }
166 
167 int fpga_post_config_fn(int cookie)
168 {
169 	debug("%s:%d: FPGA post-configuration\n", __func__, __LINE__);
170 
171 	fpga_reset(true);
172 	udelay(100);
173 	fpga_reset(false);
174 
175 	return 0;
176 }
177 
178 /* Write program to the FPGA */
179 int fpga_wr_fn(int nassert_write, int flush, int cookie)
180 {
181 	gpio_set_value(FPGA_DIN, nassert_write);
182 
183 	return nassert_write;
184 }
185 
186 int fpga_clk_fn(int assert_clk, int flush, int cookie)
187 {
188 	gpio_set_value(FPGA_CCLK, assert_clk);
189 
190 	return assert_clk;
191 }
192 
193 xilinx_spartan3_slave_serial_fns mt_ventoux_fpga_fns = {
194 	fpga_pre_config_fn,
195 	fpga_pgm_fn,
196 	fpga_clk_fn,
197 	fpga_init_fn,
198 	fpga_done_fn,
199 	fpga_wr_fn,
200 	fpga_post_config_fn,
201 };
202 
203 xilinx_desc fpga = XILINX_XC6SLX4_DESC(slave_serial,
204 			(void *)&mt_ventoux_fpga_fns, 0);
205 
206 /* Initialize the FPGA */
207 static void mt_ventoux_init_fpga(void)
208 {
209 	fpga_pre_config_fn(0);
210 
211 	/* Setting CS1 for FPGA access */
212 	enable_gpmc_cs_config(gpmc_fpga, &gpmc_cfg->cs[1],
213 		FPGA_BASE_ADDR, GPMC_SIZE_128M);
214 
215 	fpga_init();
216 	fpga_add(fpga_xilinx, &fpga);
217 }
218 
219 /*
220  * Routine: board_init
221  * Description: Early hardware init.
222  */
223 int board_init(void)
224 {
225 	gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
226 
227 	/* boot param addr */
228 	gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
229 
230 	mt_ventoux_init_fpga();
231 
232 	/* GPIO_140: speaker #mute */
233 	MUX_VAL(CP(MCBSP3_DX),		(IEN | PTU | EN | M4))
234 	/* GPIO_141: Buzz Hi */
235 	MUX_VAL(CP(MCBSP3_DR),		(IEN  | PTU | EN | M4))
236 
237 	/* Turning off the buzzer */
238 	gpio_request(BUZZER, "BUZZER_MUTE");
239 	gpio_request(SPEAKER, "SPEAKER");
240 	gpio_direction_output(BUZZER, 0);
241 	gpio_direction_output(SPEAKER, 0);
242 
243 	/* Activate USB power */
244 	gpio_request(USB1_PWR, "USB1_PWR");
245 	gpio_request(USB2_PWR, "USB2_PWR");
246 	gpio_direction_output(USB1_PWR, 1);
247 	gpio_direction_output(USB2_PWR, 1);
248 
249 	return 0;
250 }
251 
252 #ifndef CONFIG_SPL_BUILD
253 int misc_init_r(void)
254 {
255 	char *eth_addr;
256 	struct tam3517_module_info info;
257 	int ret;
258 
259 	TAM3517_READ_EEPROM(&info, ret);
260 	omap_die_id_display();
261 
262 	if (ret)
263 		return 0;
264 	eth_addr = env_get("ethaddr");
265 	if (!eth_addr)
266 		TAM3517_READ_MAC_FROM_EEPROM(&info);
267 
268 	TAM3517_PRINT_SOM_INFO(&info);
269 	return 0;
270 }
271 #endif
272 
273 /*
274  * Routine: set_muxconf_regs
275  * Description: Setting up the configuration Mux registers specific to the
276  *		hardware. Many pins need to be moved from protect to primary
277  *		mode.
278  */
279 void set_muxconf_regs(void)
280 {
281 	MUX_MT_VENTOUX();
282 }
283 
284 /*
285  * Initializes on-chip ethernet controllers.
286  * to override, implement board_eth_init()
287  */
288 int board_eth_init(bd_t *bis)
289 {
290 	davinci_emac_initialize();
291 	return 0;
292 }
293 
294 #if defined(CONFIG_MMC_OMAP_HS) && \
295 	!defined(CONFIG_SPL_BUILD)
296 int board_mmc_init(bd_t *bis)
297 {
298 	return omap_mmc_init(0, 0, 0, -1, -1);
299 }
300 #endif
301 
302 #if defined(CONFIG_VIDEO) && !defined(CONFIG_SPL_BUILD)
303 int board_video_init(void)
304 {
305 	struct prcm *prcm_base = (struct prcm *)PRCM_BASE;
306 	struct panel_config *panel = &lcd_cfg[0];
307 	char *s;
308 	u32 index = 0;
309 
310 	void *fb;
311 
312 	fb = (void *)0x88000000;
313 
314 	s = env_get("panel");
315 	if (s) {
316 		index = simple_strtoul(s, NULL, 10);
317 		if (index < ARRAY_SIZE(lcd_cfg))
318 			panel = &lcd_cfg[index];
319 		else
320 			return 0;
321 	}
322 
323 	panel->frame_buffer = fb;
324 	printf("Panel: %dx%d\n", panel_resolution[index].xres,
325 		panel_resolution[index].yres);
326 	panel->lcd_size = (panel_resolution[index].yres - 1) << 16 |
327 		(panel_resolution[index].xres - 1);
328 
329 	gpio_request(LCD_PWR, "LCD Power");
330 	gpio_request(LCD_PON_PIN, "LCD Pon");
331 	gpio_direction_output(LCD_PWR, 0);
332 	gpio_direction_output(LCD_PON_PIN, 1);
333 
334 
335 	setbits_le32(&prcm_base->fclken_dss, FCK_DSS_ON);
336 	setbits_le32(&prcm_base->iclken_dss, ICK_DSS_ON);
337 
338 	omap3_dss_panel_config(panel);
339 	omap3_dss_enable();
340 
341 	return 0;
342 }
343 #endif
344