xref: /freebsd/sys/arm/ti/am335x/am335x_lcd.c (revision 24ca3d19a961e5c60a4dcc63abf2718d87cd9377)
1*24ca3d19SOleksandr Tymoshenko /*-
2*24ca3d19SOleksandr Tymoshenko  * Copyright 2013 Oleksandr Tymoshenko <gonzo@freebsd.org>
3*24ca3d19SOleksandr Tymoshenko  * All rights reserved.
4*24ca3d19SOleksandr Tymoshenko  *
5*24ca3d19SOleksandr Tymoshenko  * Redistribution and use in source and binary forms, with or without
6*24ca3d19SOleksandr Tymoshenko  * modification, are permitted provided that the following conditions
7*24ca3d19SOleksandr Tymoshenko  * are met:
8*24ca3d19SOleksandr Tymoshenko  * 1. Redistributions of source code must retain the above copyright
9*24ca3d19SOleksandr Tymoshenko  *    notice, this list of conditions and the following disclaimer.
10*24ca3d19SOleksandr Tymoshenko  * 2. Redistributions in binary form must reproduce the above copyright
11*24ca3d19SOleksandr Tymoshenko  *    notice, this list of conditions and the following disclaimer in the
12*24ca3d19SOleksandr Tymoshenko  *    documentation and/or other materials provided with the distribution.
13*24ca3d19SOleksandr Tymoshenko  *
14*24ca3d19SOleksandr Tymoshenko  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15*24ca3d19SOleksandr Tymoshenko  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16*24ca3d19SOleksandr Tymoshenko  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17*24ca3d19SOleksandr Tymoshenko  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18*24ca3d19SOleksandr Tymoshenko  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19*24ca3d19SOleksandr Tymoshenko  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20*24ca3d19SOleksandr Tymoshenko  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21*24ca3d19SOleksandr Tymoshenko  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22*24ca3d19SOleksandr Tymoshenko  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23*24ca3d19SOleksandr Tymoshenko  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24*24ca3d19SOleksandr Tymoshenko  * SUCH DAMAGE.
25*24ca3d19SOleksandr Tymoshenko  */
26*24ca3d19SOleksandr Tymoshenko 
27*24ca3d19SOleksandr Tymoshenko #include <sys/cdefs.h>
28*24ca3d19SOleksandr Tymoshenko __FBSDID("$FreeBSD$");
29*24ca3d19SOleksandr Tymoshenko 
30*24ca3d19SOleksandr Tymoshenko #include <sys/param.h>
31*24ca3d19SOleksandr Tymoshenko #include <sys/systm.h>
32*24ca3d19SOleksandr Tymoshenko #include <sys/kernel.h>
33*24ca3d19SOleksandr Tymoshenko #include <sys/module.h>
34*24ca3d19SOleksandr Tymoshenko #include <sys/clock.h>
35*24ca3d19SOleksandr Tymoshenko #include <sys/time.h>
36*24ca3d19SOleksandr Tymoshenko #include <sys/bus.h>
37*24ca3d19SOleksandr Tymoshenko #include <sys/lock.h>
38*24ca3d19SOleksandr Tymoshenko #include <sys/mutex.h>
39*24ca3d19SOleksandr Tymoshenko #include <sys/resource.h>
40*24ca3d19SOleksandr Tymoshenko #include <sys/rman.h>
41*24ca3d19SOleksandr Tymoshenko #include <sys/sysctl.h>
42*24ca3d19SOleksandr Tymoshenko #include <vm/vm.h>
43*24ca3d19SOleksandr Tymoshenko #include <vm/pmap.h>
44*24ca3d19SOleksandr Tymoshenko 
45*24ca3d19SOleksandr Tymoshenko #include <machine/bus.h>
46*24ca3d19SOleksandr Tymoshenko 
47*24ca3d19SOleksandr Tymoshenko #include <dev/fdt/fdt_common.h>
48*24ca3d19SOleksandr Tymoshenko #include <dev/ofw/openfirm.h>
49*24ca3d19SOleksandr Tymoshenko #include <dev/ofw/ofw_bus.h>
50*24ca3d19SOleksandr Tymoshenko #include <dev/ofw/ofw_bus_subr.h>
51*24ca3d19SOleksandr Tymoshenko 
52*24ca3d19SOleksandr Tymoshenko #include <arm/ti/ti_prcm.h>
53*24ca3d19SOleksandr Tymoshenko #include <arm/ti/ti_scm.h>
54*24ca3d19SOleksandr Tymoshenko 
55*24ca3d19SOleksandr Tymoshenko #include "am335x_lcd.h"
56*24ca3d19SOleksandr Tymoshenko #include "am335x_pwm.h"
57*24ca3d19SOleksandr Tymoshenko 
58*24ca3d19SOleksandr Tymoshenko #define	LCD_PID			0x00
59*24ca3d19SOleksandr Tymoshenko #define	LCD_CTRL		0x04
60*24ca3d19SOleksandr Tymoshenko #define		CTRL_DIV_MASK		0xff
61*24ca3d19SOleksandr Tymoshenko #define		CTRL_DIV_SHIFT		8
62*24ca3d19SOleksandr Tymoshenko #define		CTRL_AUTO_UFLOW_RESTART	(1 << 1)
63*24ca3d19SOleksandr Tymoshenko #define		CTRL_RASTER_MODE	1
64*24ca3d19SOleksandr Tymoshenko #define		CTRL_LIDD_MODE		0
65*24ca3d19SOleksandr Tymoshenko #define	LCD_LIDD_CTRL		0x0C
66*24ca3d19SOleksandr Tymoshenko #define	LCD_LIDD_CS0_CONF	0x10
67*24ca3d19SOleksandr Tymoshenko #define	LCD_LIDD_CS0_ADDR	0x14
68*24ca3d19SOleksandr Tymoshenko #define	LCD_LIDD_CS0_DATA	0x18
69*24ca3d19SOleksandr Tymoshenko #define	LCD_LIDD_CS1_CONF	0x1C
70*24ca3d19SOleksandr Tymoshenko #define	LCD_LIDD_CS1_ADDR	0x20
71*24ca3d19SOleksandr Tymoshenko #define	LCD_LIDD_CS1_DATA	0x24
72*24ca3d19SOleksandr Tymoshenko #define	LCD_RASTER_CTRL		0x28
73*24ca3d19SOleksandr Tymoshenko #define		RASTER_CTRL_TFT24_UNPACKED	(1 << 26)
74*24ca3d19SOleksandr Tymoshenko #define		RASTER_CTRL_TFT24		(1 << 25)
75*24ca3d19SOleksandr Tymoshenko #define		RASTER_CTRL_STN565		(1 << 24)
76*24ca3d19SOleksandr Tymoshenko #define		RASTER_CTRL_TFTPMAP		(1 << 23)
77*24ca3d19SOleksandr Tymoshenko #define		RASTER_CTRL_NIBMODE		(1 << 22)
78*24ca3d19SOleksandr Tymoshenko #define		RASTER_CTRL_PALMODE_SHIFT	20
79*24ca3d19SOleksandr Tymoshenko #define		PALETTE_PALETTE_AND_DATA	0x00
80*24ca3d19SOleksandr Tymoshenko #define		PALETTE_PALETTE_ONLY		0x01
81*24ca3d19SOleksandr Tymoshenko #define		PALETTE_DATA_ONLY		0x02
82*24ca3d19SOleksandr Tymoshenko #define		RASTER_CTRL_REQDLY_SHIFT	12
83*24ca3d19SOleksandr Tymoshenko #define		RASTER_CTRL_MONO8B		(1 << 9)
84*24ca3d19SOleksandr Tymoshenko #define		RASTER_CTRL_RBORDER		(1 << 8)
85*24ca3d19SOleksandr Tymoshenko #define		RASTER_CTRL_LCDTFT		(1 << 7)
86*24ca3d19SOleksandr Tymoshenko #define		RASTER_CTRL_LCDBW		(1 << 1)
87*24ca3d19SOleksandr Tymoshenko #define		RASTER_CTRL_LCDEN		(1 << 0)
88*24ca3d19SOleksandr Tymoshenko #define	LCD_RASTER_TIMING_0	0x2C
89*24ca3d19SOleksandr Tymoshenko #define		RASTER_TIMING_0_HBP_SHIFT	24
90*24ca3d19SOleksandr Tymoshenko #define		RASTER_TIMING_0_HFP_SHIFT	16
91*24ca3d19SOleksandr Tymoshenko #define		RASTER_TIMING_0_HSW_SHIFT	10
92*24ca3d19SOleksandr Tymoshenko #define		RASTER_TIMING_0_PPLLSB_SHIFT	4
93*24ca3d19SOleksandr Tymoshenko #define		RASTER_TIMING_0_PPLMSB_SHIFT	3
94*24ca3d19SOleksandr Tymoshenko #define	LCD_RASTER_TIMING_1	0x30
95*24ca3d19SOleksandr Tymoshenko #define		RASTER_TIMING_1_VBP_SHIFT	24
96*24ca3d19SOleksandr Tymoshenko #define		RASTER_TIMING_1_VFP_SHIFT	16
97*24ca3d19SOleksandr Tymoshenko #define		RASTER_TIMING_1_VSW_SHIFT	10
98*24ca3d19SOleksandr Tymoshenko #define		RASTER_TIMING_1_LPP_SHIFT	0
99*24ca3d19SOleksandr Tymoshenko #define	LCD_RASTER_TIMING_2	0x34
100*24ca3d19SOleksandr Tymoshenko #define		RASTER_TIMING_2_HSWHI_SHIFT	27
101*24ca3d19SOleksandr Tymoshenko #define		RASTER_TIMING_2_LPP_B10_SHIFT	26
102*24ca3d19SOleksandr Tymoshenko #define		RASTER_TIMING_2_PHSVS		(1 << 25)
103*24ca3d19SOleksandr Tymoshenko #define		RASTER_TIMING_2_PHSVS_RISE	(1 << 24)
104*24ca3d19SOleksandr Tymoshenko #define		RASTER_TIMING_2_PHSVS_FALL	(0 << 24)
105*24ca3d19SOleksandr Tymoshenko #define		RASTER_TIMING_2_IOE		(1 << 23)
106*24ca3d19SOleksandr Tymoshenko #define		RASTER_TIMING_2_IPC		(1 << 22)
107*24ca3d19SOleksandr Tymoshenko #define		RASTER_TIMING_2_IHS		(1 << 21)
108*24ca3d19SOleksandr Tymoshenko #define		RASTER_TIMING_2_IVS		(1 << 20)
109*24ca3d19SOleksandr Tymoshenko #define		RASTER_TIMING_2_ACBI_SHIFT	16
110*24ca3d19SOleksandr Tymoshenko #define		RASTER_TIMING_2_ACB_SHIFT	8
111*24ca3d19SOleksandr Tymoshenko #define		RASTER_TIMING_2_HBPHI_SHIFT	4
112*24ca3d19SOleksandr Tymoshenko #define		RASTER_TIMING_2_HFPHI_SHIFT	0
113*24ca3d19SOleksandr Tymoshenko #define	LCD_RASTER_SUBPANEL	0x38
114*24ca3d19SOleksandr Tymoshenko #define	LCD_RASTER_SUBPANEL2	0x3C
115*24ca3d19SOleksandr Tymoshenko #define	LCD_LCDDMA_CTRL		0x40
116*24ca3d19SOleksandr Tymoshenko #define		LCDDMA_CTRL_DMA_MASTER_PRIO_SHIFT		16
117*24ca3d19SOleksandr Tymoshenko #define		LCDDMA_CTRL_TH_FIFO_RDY_SHIFT	8
118*24ca3d19SOleksandr Tymoshenko #define		LCDDMA_CTRL_BURST_SIZE_SHIFT	4
119*24ca3d19SOleksandr Tymoshenko #define		LCDDMA_CTRL_BYTES_SWAP		(1 << 3)
120*24ca3d19SOleksandr Tymoshenko #define		LCDDMA_CTRL_BE			(1 << 1)
121*24ca3d19SOleksandr Tymoshenko #define		LCDDMA_CTRL_FB0_ONLY		0
122*24ca3d19SOleksandr Tymoshenko #define		LCDDMA_CTRL_FB0_FB1		(1 << 0)
123*24ca3d19SOleksandr Tymoshenko #define	LCD_LCDDMA_FB0_BASE	0x44
124*24ca3d19SOleksandr Tymoshenko #define	LCD_LCDDMA_FB0_CEILING	0x48
125*24ca3d19SOleksandr Tymoshenko #define	LCD_LCDDMA_FB1_BASE	0x4C
126*24ca3d19SOleksandr Tymoshenko #define	LCD_LCDDMA_FB1_CEILING	0x50
127*24ca3d19SOleksandr Tymoshenko #define	LCD_SYSCONFIG		0x54
128*24ca3d19SOleksandr Tymoshenko #define		SYSCONFIG_STANDBY_FORCE		(0 << 4)
129*24ca3d19SOleksandr Tymoshenko #define		SYSCONFIG_STANDBY_NONE		(1 << 4)
130*24ca3d19SOleksandr Tymoshenko #define		SYSCONFIG_STANDBY_SMART		(2 << 4)
131*24ca3d19SOleksandr Tymoshenko #define		SYSCONFIG_IDLE_FORCE		(0 << 2)
132*24ca3d19SOleksandr Tymoshenko #define		SYSCONFIG_IDLE_NONE		(1 << 2)
133*24ca3d19SOleksandr Tymoshenko #define		SYSCONFIG_IDLE_SMART		(2 << 2)
134*24ca3d19SOleksandr Tymoshenko #define	LCD_IRQSTATUS_RAW	0x58
135*24ca3d19SOleksandr Tymoshenko #define	LCD_IRQSTATUS		0x5C
136*24ca3d19SOleksandr Tymoshenko #define	LCD_IRQENABLE_SET	0x60
137*24ca3d19SOleksandr Tymoshenko #define	LCD_IRQENABLE_CLEAR	0x64
138*24ca3d19SOleksandr Tymoshenko #define		IRQ_EOF1		(1 << 9)
139*24ca3d19SOleksandr Tymoshenko #define		IRQ_EOF0		(1 << 8)
140*24ca3d19SOleksandr Tymoshenko #define		IRQ_PL			(1 << 6)
141*24ca3d19SOleksandr Tymoshenko #define		IRQ_FUF			(1 << 5)
142*24ca3d19SOleksandr Tymoshenko #define		IRQ_ACB			(1 << 3)
143*24ca3d19SOleksandr Tymoshenko #define		IRQ_SYNC_LOST		(1 << 2)
144*24ca3d19SOleksandr Tymoshenko #define		IRQ_RASTER_DONE		(1 << 1)
145*24ca3d19SOleksandr Tymoshenko #define		IRQ_FRAME_DONE		(1 << 0)
146*24ca3d19SOleksandr Tymoshenko #define	LCD_CLKC_ENABLE		0x6C
147*24ca3d19SOleksandr Tymoshenko #define		CLKC_ENABLE_DMA		(1 << 2)
148*24ca3d19SOleksandr Tymoshenko #define		CLKC_ENABLE_LDID	(1 << 1)
149*24ca3d19SOleksandr Tymoshenko #define		CLKC_ENABLE_CORE	(1 << 0)
150*24ca3d19SOleksandr Tymoshenko #define	LCD_CLKC_RESET		0x70
151*24ca3d19SOleksandr Tymoshenko #define		CLKC_RESET_MAIN		(1 << 3)
152*24ca3d19SOleksandr Tymoshenko #define		CLKC_RESET_DMA		(1 << 2)
153*24ca3d19SOleksandr Tymoshenko #define		CLKC_RESET_LDID		(1 << 1)
154*24ca3d19SOleksandr Tymoshenko #define		CLKC_RESET_CORE		(1 << 0)
155*24ca3d19SOleksandr Tymoshenko 
156*24ca3d19SOleksandr Tymoshenko #define	LCD_LOCK(_sc)		mtx_lock(&(_sc)->sc_mtx)
157*24ca3d19SOleksandr Tymoshenko #define	LCD_UNLOCK(_sc)		mtx_unlock(&(_sc)->sc_mtx)
158*24ca3d19SOleksandr Tymoshenko #define	LCD_LOCK_INIT(_sc)	mtx_init(&(_sc)->sc_mtx, \
159*24ca3d19SOleksandr Tymoshenko     device_get_nameunit(_sc->sc_dev), "am335x_lcd", MTX_DEF)
160*24ca3d19SOleksandr Tymoshenko #define	LCD_LOCK_DESTROY(_sc)	mtx_destroy(&(_sc)->sc_mtx);
161*24ca3d19SOleksandr Tymoshenko 
162*24ca3d19SOleksandr Tymoshenko #define	LCD_READ4(_sc, reg)	bus_read_4((_sc)->sc_mem_res, reg);
163*24ca3d19SOleksandr Tymoshenko #define	LCD_WRITE4(_sc, reg, value)	\
164*24ca3d19SOleksandr Tymoshenko     bus_write_4((_sc)->sc_mem_res, reg, value);
165*24ca3d19SOleksandr Tymoshenko 
166*24ca3d19SOleksandr Tymoshenko 
167*24ca3d19SOleksandr Tymoshenko /* Backlight is controlled by eCAS interface on PWM unit 0 */
168*24ca3d19SOleksandr Tymoshenko #define	PWM_UNIT	0
169*24ca3d19SOleksandr Tymoshenko #define	PWM_PERIOD	100
170*24ca3d19SOleksandr Tymoshenko 
171*24ca3d19SOleksandr Tymoshenko struct am335x_lcd_softc {
172*24ca3d19SOleksandr Tymoshenko 	device_t		sc_dev;
173*24ca3d19SOleksandr Tymoshenko 	struct resource		*sc_mem_res;
174*24ca3d19SOleksandr Tymoshenko 	struct resource		*sc_irq_res;
175*24ca3d19SOleksandr Tymoshenko 	void			*sc_intr_hl;
176*24ca3d19SOleksandr Tymoshenko 	struct mtx		sc_mtx;
177*24ca3d19SOleksandr Tymoshenko 	int			sc_backlight;
178*24ca3d19SOleksandr Tymoshenko 	struct sysctl_oid	*sc_oid;
179*24ca3d19SOleksandr Tymoshenko 
180*24ca3d19SOleksandr Tymoshenko 	/* Framebuffer */
181*24ca3d19SOleksandr Tymoshenko 	bus_dma_tag_t		sc_dma_tag;
182*24ca3d19SOleksandr Tymoshenko 	bus_dmamap_t		sc_dma_map;
183*24ca3d19SOleksandr Tymoshenko 	size_t			sc_fb_size;
184*24ca3d19SOleksandr Tymoshenko 	bus_addr_t		sc_fb_phys;
185*24ca3d19SOleksandr Tymoshenko 	uint8_t			*sc_fb_base;
186*24ca3d19SOleksandr Tymoshenko };
187*24ca3d19SOleksandr Tymoshenko 
188*24ca3d19SOleksandr Tymoshenko static void
189*24ca3d19SOleksandr Tymoshenko am335x_fb_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int err)
190*24ca3d19SOleksandr Tymoshenko {
191*24ca3d19SOleksandr Tymoshenko 	bus_addr_t *addr;
192*24ca3d19SOleksandr Tymoshenko 
193*24ca3d19SOleksandr Tymoshenko 	if (err)
194*24ca3d19SOleksandr Tymoshenko 		return;
195*24ca3d19SOleksandr Tymoshenko 
196*24ca3d19SOleksandr Tymoshenko 	addr = (bus_addr_t*)arg;
197*24ca3d19SOleksandr Tymoshenko 	*addr = segs[0].ds_addr;
198*24ca3d19SOleksandr Tymoshenko }
199*24ca3d19SOleksandr Tymoshenko 
200*24ca3d19SOleksandr Tymoshenko static uint32_t
201*24ca3d19SOleksandr Tymoshenko am335x_lcd_calc_divisor(uint32_t reference, uint32_t freq)
202*24ca3d19SOleksandr Tymoshenko {
203*24ca3d19SOleksandr Tymoshenko 	uint32_t div;
204*24ca3d19SOleksandr Tymoshenko 	/* Raster mode case: divisors are in range from 2 to 255 */
205*24ca3d19SOleksandr Tymoshenko 	for (div = 2; div < 255; div++)
206*24ca3d19SOleksandr Tymoshenko 		if (reference/div <= freq)
207*24ca3d19SOleksandr Tymoshenko 			return (div);
208*24ca3d19SOleksandr Tymoshenko 
209*24ca3d19SOleksandr Tymoshenko 	return (255);
210*24ca3d19SOleksandr Tymoshenko }
211*24ca3d19SOleksandr Tymoshenko 
212*24ca3d19SOleksandr Tymoshenko static int
213*24ca3d19SOleksandr Tymoshenko am335x_lcd_sysctl_backlight(SYSCTL_HANDLER_ARGS)
214*24ca3d19SOleksandr Tymoshenko {
215*24ca3d19SOleksandr Tymoshenko 	struct am335x_lcd_softc *sc = (struct am335x_lcd_softc*)arg1;
216*24ca3d19SOleksandr Tymoshenko 	int error;
217*24ca3d19SOleksandr Tymoshenko 	int backlight;
218*24ca3d19SOleksandr Tymoshenko 
219*24ca3d19SOleksandr Tymoshenko 	backlight = sc->sc_backlight;;
220*24ca3d19SOleksandr Tymoshenko 	error = sysctl_handle_int(oidp, &backlight, 0, req);
221*24ca3d19SOleksandr Tymoshenko 
222*24ca3d19SOleksandr Tymoshenko 	if (error != 0 || req->newptr == NULL)
223*24ca3d19SOleksandr Tymoshenko 		return (error);
224*24ca3d19SOleksandr Tymoshenko 
225*24ca3d19SOleksandr Tymoshenko 	if (backlight < 0)
226*24ca3d19SOleksandr Tymoshenko 		backlight = 0;
227*24ca3d19SOleksandr Tymoshenko 	if (backlight > 100)
228*24ca3d19SOleksandr Tymoshenko 		backlight = 100;
229*24ca3d19SOleksandr Tymoshenko 
230*24ca3d19SOleksandr Tymoshenko 	LCD_LOCK(sc);
231*24ca3d19SOleksandr Tymoshenko 	error = am335x_pwm_config_ecas(PWM_UNIT, PWM_PERIOD,
232*24ca3d19SOleksandr Tymoshenko 	    backlight*PWM_PERIOD/100);
233*24ca3d19SOleksandr Tymoshenko 	if (error == 0)
234*24ca3d19SOleksandr Tymoshenko 		sc->sc_backlight = backlight;
235*24ca3d19SOleksandr Tymoshenko 	LCD_UNLOCK(sc);
236*24ca3d19SOleksandr Tymoshenko 
237*24ca3d19SOleksandr Tymoshenko 	return (error);
238*24ca3d19SOleksandr Tymoshenko }
239*24ca3d19SOleksandr Tymoshenko 
240*24ca3d19SOleksandr Tymoshenko static int
241*24ca3d19SOleksandr Tymoshenko am335x_read_panel_property(device_t dev, const char *name, uint32_t *val)
242*24ca3d19SOleksandr Tymoshenko {
243*24ca3d19SOleksandr Tymoshenko 	phandle_t node;
244*24ca3d19SOleksandr Tymoshenko 	pcell_t cell;
245*24ca3d19SOleksandr Tymoshenko 
246*24ca3d19SOleksandr Tymoshenko 	node = ofw_bus_get_node(dev);
247*24ca3d19SOleksandr Tymoshenko 	if ((OF_getprop(node, name, &cell, sizeof(cell))) <= 0) {
248*24ca3d19SOleksandr Tymoshenko 		device_printf(dev, "missing '%s' attribute in LCD panel info\n",
249*24ca3d19SOleksandr Tymoshenko 		    name);
250*24ca3d19SOleksandr Tymoshenko 		return (ENXIO);
251*24ca3d19SOleksandr Tymoshenko 	}
252*24ca3d19SOleksandr Tymoshenko 
253*24ca3d19SOleksandr Tymoshenko 	*val = fdt32_to_cpu(cell);
254*24ca3d19SOleksandr Tymoshenko 
255*24ca3d19SOleksandr Tymoshenko 	return (0);
256*24ca3d19SOleksandr Tymoshenko }
257*24ca3d19SOleksandr Tymoshenko 
258*24ca3d19SOleksandr Tymoshenko static int
259*24ca3d19SOleksandr Tymoshenko am335x_read_panel_info(device_t dev, struct panel_info *panel)
260*24ca3d19SOleksandr Tymoshenko {
261*24ca3d19SOleksandr Tymoshenko 	int error;
262*24ca3d19SOleksandr Tymoshenko 
263*24ca3d19SOleksandr Tymoshenko 	error = 0;
264*24ca3d19SOleksandr Tymoshenko 	if ((error = am335x_read_panel_property(dev,
265*24ca3d19SOleksandr Tymoshenko 	    "panel_width", &panel->panel_width)))
266*24ca3d19SOleksandr Tymoshenko 		goto out;
267*24ca3d19SOleksandr Tymoshenko 
268*24ca3d19SOleksandr Tymoshenko 	if ((error = am335x_read_panel_property(dev,
269*24ca3d19SOleksandr Tymoshenko 	    "panel_height", &panel->panel_height)))
270*24ca3d19SOleksandr Tymoshenko 		goto out;
271*24ca3d19SOleksandr Tymoshenko 
272*24ca3d19SOleksandr Tymoshenko 	if ((error = am335x_read_panel_property(dev,
273*24ca3d19SOleksandr Tymoshenko 	    "panel_hfp", &panel->panel_hfp)))
274*24ca3d19SOleksandr Tymoshenko 		goto out;
275*24ca3d19SOleksandr Tymoshenko 
276*24ca3d19SOleksandr Tymoshenko 	if ((error = am335x_read_panel_property(dev,
277*24ca3d19SOleksandr Tymoshenko 	    "panel_hbp", &panel->panel_hbp)))
278*24ca3d19SOleksandr Tymoshenko 		goto out;
279*24ca3d19SOleksandr Tymoshenko 
280*24ca3d19SOleksandr Tymoshenko 	if ((error = am335x_read_panel_property(dev,
281*24ca3d19SOleksandr Tymoshenko 	    "panel_hsw", &panel->panel_hsw)))
282*24ca3d19SOleksandr Tymoshenko 		goto out;
283*24ca3d19SOleksandr Tymoshenko 
284*24ca3d19SOleksandr Tymoshenko 	if ((error = am335x_read_panel_property(dev,
285*24ca3d19SOleksandr Tymoshenko 	    "panel_vfp", &panel->panel_vfp)))
286*24ca3d19SOleksandr Tymoshenko 		goto out;
287*24ca3d19SOleksandr Tymoshenko 
288*24ca3d19SOleksandr Tymoshenko 	if ((error = am335x_read_panel_property(dev,
289*24ca3d19SOleksandr Tymoshenko 	    "panel_vbp", &panel->panel_vbp)))
290*24ca3d19SOleksandr Tymoshenko 		goto out;
291*24ca3d19SOleksandr Tymoshenko 
292*24ca3d19SOleksandr Tymoshenko 	if ((error = am335x_read_panel_property(dev,
293*24ca3d19SOleksandr Tymoshenko 	    "panel_vsw", &panel->panel_vsw)))
294*24ca3d19SOleksandr Tymoshenko 		goto out;
295*24ca3d19SOleksandr Tymoshenko 
296*24ca3d19SOleksandr Tymoshenko 	if ((error = am335x_read_panel_property(dev,
297*24ca3d19SOleksandr Tymoshenko 	    "panel_pxl_clk", &panel->panel_pxl_clk)))
298*24ca3d19SOleksandr Tymoshenko 		goto out;
299*24ca3d19SOleksandr Tymoshenko 
300*24ca3d19SOleksandr Tymoshenko 	if ((error = am335x_read_panel_property(dev,
301*24ca3d19SOleksandr Tymoshenko 	    "panel_invert_pxl_clk", &panel->panel_invert_pxl_clk)))
302*24ca3d19SOleksandr Tymoshenko 		goto out;
303*24ca3d19SOleksandr Tymoshenko 
304*24ca3d19SOleksandr Tymoshenko 	if ((error = am335x_read_panel_property(dev,
305*24ca3d19SOleksandr Tymoshenko 	    "ac_bias", &panel->ac_bias)))
306*24ca3d19SOleksandr Tymoshenko 		goto out;
307*24ca3d19SOleksandr Tymoshenko 
308*24ca3d19SOleksandr Tymoshenko 	if ((error = am335x_read_panel_property(dev,
309*24ca3d19SOleksandr Tymoshenko 	    "ac_bias_intrpt", &panel->ac_bias_intrpt)))
310*24ca3d19SOleksandr Tymoshenko 		goto out;
311*24ca3d19SOleksandr Tymoshenko 
312*24ca3d19SOleksandr Tymoshenko 	if ((error = am335x_read_panel_property(dev,
313*24ca3d19SOleksandr Tymoshenko 	    "dma_burst_sz", &panel->dma_burst_sz)))
314*24ca3d19SOleksandr Tymoshenko 		goto out;
315*24ca3d19SOleksandr Tymoshenko 
316*24ca3d19SOleksandr Tymoshenko 	if ((error = am335x_read_panel_property(dev,
317*24ca3d19SOleksandr Tymoshenko 	    "bpp", &panel->bpp)))
318*24ca3d19SOleksandr Tymoshenko 		goto out;
319*24ca3d19SOleksandr Tymoshenko 
320*24ca3d19SOleksandr Tymoshenko 	if ((error = am335x_read_panel_property(dev,
321*24ca3d19SOleksandr Tymoshenko 	    "fdd", &panel->fdd)))
322*24ca3d19SOleksandr Tymoshenko 		goto out;
323*24ca3d19SOleksandr Tymoshenko 
324*24ca3d19SOleksandr Tymoshenko 	if ((error = am335x_read_panel_property(dev,
325*24ca3d19SOleksandr Tymoshenko 	    "invert_line_clock", &panel->invert_line_clock)))
326*24ca3d19SOleksandr Tymoshenko 		goto out;
327*24ca3d19SOleksandr Tymoshenko 
328*24ca3d19SOleksandr Tymoshenko 	if ((error = am335x_read_panel_property(dev,
329*24ca3d19SOleksandr Tymoshenko 	    "invert_frm_clock", &panel->invert_frm_clock)))
330*24ca3d19SOleksandr Tymoshenko 		goto out;
331*24ca3d19SOleksandr Tymoshenko 
332*24ca3d19SOleksandr Tymoshenko 	if ((error = am335x_read_panel_property(dev,
333*24ca3d19SOleksandr Tymoshenko 	    "sync_edge", &panel->sync_edge)))
334*24ca3d19SOleksandr Tymoshenko 		goto out;
335*24ca3d19SOleksandr Tymoshenko 
336*24ca3d19SOleksandr Tymoshenko 	error = am335x_read_panel_property(dev,
337*24ca3d19SOleksandr Tymoshenko 	    "sync_ctrl", &panel->sync_ctrl);
338*24ca3d19SOleksandr Tymoshenko 
339*24ca3d19SOleksandr Tymoshenko out:
340*24ca3d19SOleksandr Tymoshenko 	return (error);
341*24ca3d19SOleksandr Tymoshenko }
342*24ca3d19SOleksandr Tymoshenko 
343*24ca3d19SOleksandr Tymoshenko static void
344*24ca3d19SOleksandr Tymoshenko am335x_lcd_intr(void *arg)
345*24ca3d19SOleksandr Tymoshenko {
346*24ca3d19SOleksandr Tymoshenko 	struct am335x_lcd_softc *sc = arg;
347*24ca3d19SOleksandr Tymoshenko 	uint32_t reg;
348*24ca3d19SOleksandr Tymoshenko 
349*24ca3d19SOleksandr Tymoshenko 	reg = LCD_READ4(sc, LCD_IRQSTATUS);
350*24ca3d19SOleksandr Tymoshenko 	LCD_WRITE4(sc, LCD_IRQSTATUS, reg);
351*24ca3d19SOleksandr Tymoshenko 
352*24ca3d19SOleksandr Tymoshenko 	if (reg & IRQ_SYNC_LOST) {
353*24ca3d19SOleksandr Tymoshenko 		reg = LCD_READ4(sc, LCD_RASTER_CTRL);
354*24ca3d19SOleksandr Tymoshenko 		reg &= ~RASTER_CTRL_LCDEN;
355*24ca3d19SOleksandr Tymoshenko 		LCD_WRITE4(sc, LCD_RASTER_CTRL, reg);
356*24ca3d19SOleksandr Tymoshenko 
357*24ca3d19SOleksandr Tymoshenko 		reg = LCD_READ4(sc, LCD_RASTER_CTRL);
358*24ca3d19SOleksandr Tymoshenko 		reg |= RASTER_CTRL_LCDEN;
359*24ca3d19SOleksandr Tymoshenko 		LCD_WRITE4(sc, LCD_RASTER_CTRL, reg);
360*24ca3d19SOleksandr Tymoshenko 		return;
361*24ca3d19SOleksandr Tymoshenko 	}
362*24ca3d19SOleksandr Tymoshenko 
363*24ca3d19SOleksandr Tymoshenko 	if (reg & IRQ_PL) {
364*24ca3d19SOleksandr Tymoshenko 		reg = LCD_READ4(sc, LCD_RASTER_CTRL);
365*24ca3d19SOleksandr Tymoshenko 		reg &= ~RASTER_CTRL_LCDEN;
366*24ca3d19SOleksandr Tymoshenko 		LCD_WRITE4(sc, LCD_RASTER_CTRL, reg);
367*24ca3d19SOleksandr Tymoshenko 
368*24ca3d19SOleksandr Tymoshenko 		reg = LCD_READ4(sc, LCD_RASTER_CTRL);
369*24ca3d19SOleksandr Tymoshenko 		reg |= RASTER_CTRL_LCDEN;
370*24ca3d19SOleksandr Tymoshenko 		LCD_WRITE4(sc, LCD_RASTER_CTRL, reg);
371*24ca3d19SOleksandr Tymoshenko 		return;
372*24ca3d19SOleksandr Tymoshenko 	}
373*24ca3d19SOleksandr Tymoshenko 
374*24ca3d19SOleksandr Tymoshenko 	if (reg & IRQ_EOF0) {
375*24ca3d19SOleksandr Tymoshenko 		LCD_WRITE4(sc, LCD_LCDDMA_FB0_BASE, sc->sc_fb_phys);
376*24ca3d19SOleksandr Tymoshenko 		LCD_WRITE4(sc, LCD_LCDDMA_FB0_CEILING, sc->sc_fb_phys + sc->sc_fb_size - 1);
377*24ca3d19SOleksandr Tymoshenko 		reg &= ~IRQ_EOF0;
378*24ca3d19SOleksandr Tymoshenko 	}
379*24ca3d19SOleksandr Tymoshenko 
380*24ca3d19SOleksandr Tymoshenko 	if (reg & IRQ_EOF1) {
381*24ca3d19SOleksandr Tymoshenko 		LCD_WRITE4(sc, LCD_LCDDMA_FB1_BASE, sc->sc_fb_phys);
382*24ca3d19SOleksandr Tymoshenko 		LCD_WRITE4(sc, LCD_LCDDMA_FB1_CEILING, sc->sc_fb_phys + sc->sc_fb_size - 1);
383*24ca3d19SOleksandr Tymoshenko 		reg &= ~IRQ_EOF1;
384*24ca3d19SOleksandr Tymoshenko 	}
385*24ca3d19SOleksandr Tymoshenko 
386*24ca3d19SOleksandr Tymoshenko 	if (reg & IRQ_FUF) {
387*24ca3d19SOleksandr Tymoshenko 		/* TODO: Handle FUF */
388*24ca3d19SOleksandr Tymoshenko 	}
389*24ca3d19SOleksandr Tymoshenko 
390*24ca3d19SOleksandr Tymoshenko 	if (reg & IRQ_ACB) {
391*24ca3d19SOleksandr Tymoshenko 		/* TODO: Handle ACB */
392*24ca3d19SOleksandr Tymoshenko 	}
393*24ca3d19SOleksandr Tymoshenko }
394*24ca3d19SOleksandr Tymoshenko 
395*24ca3d19SOleksandr Tymoshenko static int
396*24ca3d19SOleksandr Tymoshenko am335x_lcd_probe(device_t dev)
397*24ca3d19SOleksandr Tymoshenko {
398*24ca3d19SOleksandr Tymoshenko 	if (!ofw_bus_is_compatible(dev, "ti,am335x-lcd"))
399*24ca3d19SOleksandr Tymoshenko 		return (ENXIO);
400*24ca3d19SOleksandr Tymoshenko 
401*24ca3d19SOleksandr Tymoshenko 	device_set_desc(dev, "AM335x LCD controller");
402*24ca3d19SOleksandr Tymoshenko 
403*24ca3d19SOleksandr Tymoshenko 	return (0);
404*24ca3d19SOleksandr Tymoshenko }
405*24ca3d19SOleksandr Tymoshenko 
406*24ca3d19SOleksandr Tymoshenko static int
407*24ca3d19SOleksandr Tymoshenko am335x_lcd_attach(device_t dev)
408*24ca3d19SOleksandr Tymoshenko {
409*24ca3d19SOleksandr Tymoshenko 	struct am335x_lcd_softc *sc;
410*24ca3d19SOleksandr Tymoshenko 	int rid;
411*24ca3d19SOleksandr Tymoshenko 	int div;
412*24ca3d19SOleksandr Tymoshenko 	struct panel_info panel;
413*24ca3d19SOleksandr Tymoshenko 	uint32_t reg, timing0, timing1, timing2;
414*24ca3d19SOleksandr Tymoshenko 	struct sysctl_ctx_list *ctx;
415*24ca3d19SOleksandr Tymoshenko 	struct sysctl_oid *tree;
416*24ca3d19SOleksandr Tymoshenko 	uint32_t burst_log;
417*24ca3d19SOleksandr Tymoshenko 	int err;
418*24ca3d19SOleksandr Tymoshenko 	size_t dma_size;
419*24ca3d19SOleksandr Tymoshenko 
420*24ca3d19SOleksandr Tymoshenko 	sc = device_get_softc(dev);
421*24ca3d19SOleksandr Tymoshenko 	sc->sc_dev = dev;
422*24ca3d19SOleksandr Tymoshenko 
423*24ca3d19SOleksandr Tymoshenko 	if (am335x_read_panel_info(dev, &panel))
424*24ca3d19SOleksandr Tymoshenko 		return (ENXIO);
425*24ca3d19SOleksandr Tymoshenko 
426*24ca3d19SOleksandr Tymoshenko 	int ref_freq = 0;
427*24ca3d19SOleksandr Tymoshenko 	ti_prcm_clk_enable(LCDC_CLK);
428*24ca3d19SOleksandr Tymoshenko 	if (ti_prcm_clk_get_source_freq(LCDC_CLK, &ref_freq)) {
429*24ca3d19SOleksandr Tymoshenko 		device_printf(dev, "Can't get reference frequency\n");
430*24ca3d19SOleksandr Tymoshenko 		return (ENXIO);
431*24ca3d19SOleksandr Tymoshenko 	}
432*24ca3d19SOleksandr Tymoshenko 
433*24ca3d19SOleksandr Tymoshenko 	rid = 0;
434*24ca3d19SOleksandr Tymoshenko 	sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
435*24ca3d19SOleksandr Tymoshenko 	    RF_ACTIVE);
436*24ca3d19SOleksandr Tymoshenko 	if (!sc->sc_mem_res) {
437*24ca3d19SOleksandr Tymoshenko 		device_printf(dev, "cannot allocate memory window\n");
438*24ca3d19SOleksandr Tymoshenko 		return (ENXIO);
439*24ca3d19SOleksandr Tymoshenko 	}
440*24ca3d19SOleksandr Tymoshenko 
441*24ca3d19SOleksandr Tymoshenko 	rid = 0;
442*24ca3d19SOleksandr Tymoshenko 	sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
443*24ca3d19SOleksandr Tymoshenko 	    RF_ACTIVE);
444*24ca3d19SOleksandr Tymoshenko 	if (!sc->sc_irq_res) {
445*24ca3d19SOleksandr Tymoshenko 		bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->sc_mem_res);
446*24ca3d19SOleksandr Tymoshenko 		device_printf(dev, "cannot allocate interrupt\n");
447*24ca3d19SOleksandr Tymoshenko 		return (ENXIO);
448*24ca3d19SOleksandr Tymoshenko 	}
449*24ca3d19SOleksandr Tymoshenko 
450*24ca3d19SOleksandr Tymoshenko 	if (bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_MISC | INTR_MPSAFE,
451*24ca3d19SOleksandr Tymoshenko 			NULL, am335x_lcd_intr, sc,
452*24ca3d19SOleksandr Tymoshenko 			&sc->sc_intr_hl) != 0) {
453*24ca3d19SOleksandr Tymoshenko 		bus_release_resource(dev, SYS_RES_IRQ, rid,
454*24ca3d19SOleksandr Tymoshenko 		    sc->sc_irq_res);
455*24ca3d19SOleksandr Tymoshenko 		bus_release_resource(dev, SYS_RES_MEMORY, rid,
456*24ca3d19SOleksandr Tymoshenko 		    sc->sc_mem_res);
457*24ca3d19SOleksandr Tymoshenko 		device_printf(dev, "Unable to setup the irq handler.\n");
458*24ca3d19SOleksandr Tymoshenko 		return (ENXIO);
459*24ca3d19SOleksandr Tymoshenko 	}
460*24ca3d19SOleksandr Tymoshenko 
461*24ca3d19SOleksandr Tymoshenko 	LCD_LOCK_INIT(sc);
462*24ca3d19SOleksandr Tymoshenko 
463*24ca3d19SOleksandr Tymoshenko 	/* Panle initialization */
464*24ca3d19SOleksandr Tymoshenko 	dma_size = round_page(panel.panel_width*panel.panel_height*panel.bpp/8);
465*24ca3d19SOleksandr Tymoshenko 
466*24ca3d19SOleksandr Tymoshenko 	/*
467*24ca3d19SOleksandr Tymoshenko 	 * Now allocate framebuffer memory
468*24ca3d19SOleksandr Tymoshenko 	 */
469*24ca3d19SOleksandr Tymoshenko 	err = bus_dma_tag_create(
470*24ca3d19SOleksandr Tymoshenko 	    bus_get_dma_tag(dev),
471*24ca3d19SOleksandr Tymoshenko 	    4, 0,		/* alignment, boundary */
472*24ca3d19SOleksandr Tymoshenko 	    BUS_SPACE_MAXADDR_32BIT,	/* lowaddr */
473*24ca3d19SOleksandr Tymoshenko 	    BUS_SPACE_MAXADDR,		/* highaddr */
474*24ca3d19SOleksandr Tymoshenko 	    NULL, NULL,			/* filter, filterarg */
475*24ca3d19SOleksandr Tymoshenko 	    dma_size, 1,			/* maxsize, nsegments */
476*24ca3d19SOleksandr Tymoshenko 	    dma_size, 0,			/* maxsegsize, flags */
477*24ca3d19SOleksandr Tymoshenko 	    NULL, NULL,			/* lockfunc, lockarg */
478*24ca3d19SOleksandr Tymoshenko 	    &sc->sc_dma_tag);
479*24ca3d19SOleksandr Tymoshenko 	if (err)
480*24ca3d19SOleksandr Tymoshenko 		goto fail;
481*24ca3d19SOleksandr Tymoshenko 
482*24ca3d19SOleksandr Tymoshenko 	err = bus_dmamem_alloc(sc->sc_dma_tag, (void **)&sc->sc_fb_base,
483*24ca3d19SOleksandr Tymoshenko 	    0, &sc->sc_dma_map);
484*24ca3d19SOleksandr Tymoshenko 
485*24ca3d19SOleksandr Tymoshenko 	if (err) {
486*24ca3d19SOleksandr Tymoshenko 		device_printf(dev, "cannot allocate framebuffer\n");
487*24ca3d19SOleksandr Tymoshenko 		goto fail;
488*24ca3d19SOleksandr Tymoshenko 	}
489*24ca3d19SOleksandr Tymoshenko 
490*24ca3d19SOleksandr Tymoshenko 	err = bus_dmamap_load(sc->sc_dma_tag, sc->sc_dma_map, sc->sc_fb_base,
491*24ca3d19SOleksandr Tymoshenko 	    dma_size, am335x_fb_dmamap_cb, &sc->sc_fb_phys, BUS_DMA_NOWAIT);
492*24ca3d19SOleksandr Tymoshenko 
493*24ca3d19SOleksandr Tymoshenko 	if (err) {
494*24ca3d19SOleksandr Tymoshenko 		device_printf(dev, "cannot load DMA map\n");
495*24ca3d19SOleksandr Tymoshenko 		goto fail;
496*24ca3d19SOleksandr Tymoshenko 	}
497*24ca3d19SOleksandr Tymoshenko 
498*24ca3d19SOleksandr Tymoshenko 	/* Make sure it's blank */
499*24ca3d19SOleksandr Tymoshenko 	memset(sc->sc_fb_base, 0x00, dma_size);
500*24ca3d19SOleksandr Tymoshenko 
501*24ca3d19SOleksandr Tymoshenko 	/* Calculate actual FB Size */
502*24ca3d19SOleksandr Tymoshenko 	sc->sc_fb_size = panel.panel_width*panel.panel_height*panel.bpp/8;
503*24ca3d19SOleksandr Tymoshenko 
504*24ca3d19SOleksandr Tymoshenko 	/* Only raster mode is supported */
505*24ca3d19SOleksandr Tymoshenko 	reg = CTRL_RASTER_MODE;
506*24ca3d19SOleksandr Tymoshenko 	div = am335x_lcd_calc_divisor(ref_freq, panel.panel_pxl_clk);
507*24ca3d19SOleksandr Tymoshenko 	reg |= (div << CTRL_DIV_SHIFT);
508*24ca3d19SOleksandr Tymoshenko 	LCD_WRITE4(sc, LCD_CTRL, reg);
509*24ca3d19SOleksandr Tymoshenko 
510*24ca3d19SOleksandr Tymoshenko 	/* Set timing */
511*24ca3d19SOleksandr Tymoshenko 	timing0 = timing1 = timing2 = 0;
512*24ca3d19SOleksandr Tymoshenko 
513*24ca3d19SOleksandr Tymoshenko 	/* Horizontal back porch */
514*24ca3d19SOleksandr Tymoshenko 	timing0 |= (panel.panel_hbp & 0xff) << RASTER_TIMING_0_HBP_SHIFT;
515*24ca3d19SOleksandr Tymoshenko 	timing2 |= ((panel.panel_hbp >> 8) & 3) << RASTER_TIMING_2_HBPHI_SHIFT;
516*24ca3d19SOleksandr Tymoshenko 	/* Horizontal front porch */
517*24ca3d19SOleksandr Tymoshenko 	timing0 |= (panel.panel_hfp & 0xff) << RASTER_TIMING_0_HFP_SHIFT;
518*24ca3d19SOleksandr Tymoshenko 	timing2 |= ((panel.panel_hfp >> 8) & 3) << RASTER_TIMING_2_HFPHI_SHIFT;
519*24ca3d19SOleksandr Tymoshenko 	/* Horizontal sync width */
520*24ca3d19SOleksandr Tymoshenko 	timing0 |= (panel.panel_hsw & 0x3f) << RASTER_TIMING_0_HSW_SHIFT;
521*24ca3d19SOleksandr Tymoshenko 	timing2 |= ((panel.panel_hsw >> 6) & 0xf) << RASTER_TIMING_2_HSWHI_SHIFT;
522*24ca3d19SOleksandr Tymoshenko 
523*24ca3d19SOleksandr Tymoshenko 	/* Vertical back porch, front porch, sync width */
524*24ca3d19SOleksandr Tymoshenko 	timing1 |= (panel.panel_vbp & 0xff) << RASTER_TIMING_1_VBP_SHIFT;
525*24ca3d19SOleksandr Tymoshenko 	timing1 |= (panel.panel_vfp & 0xff) << RASTER_TIMING_1_VFP_SHIFT;
526*24ca3d19SOleksandr Tymoshenko 	timing1 |= (panel.panel_vsw & 0x3f) << RASTER_TIMING_1_VSW_SHIFT;
527*24ca3d19SOleksandr Tymoshenko 
528*24ca3d19SOleksandr Tymoshenko 	/* Pixels per line */
529*24ca3d19SOleksandr Tymoshenko 	timing0 |= (((panel.panel_width - 1) >> 10) & 1)
530*24ca3d19SOleksandr Tymoshenko 	    << RASTER_TIMING_0_PPLMSB_SHIFT;
531*24ca3d19SOleksandr Tymoshenko 	timing0 |= (((panel.panel_width - 1) >> 4) & 0x3f)
532*24ca3d19SOleksandr Tymoshenko 	    << RASTER_TIMING_0_PPLLSB_SHIFT;
533*24ca3d19SOleksandr Tymoshenko 
534*24ca3d19SOleksandr Tymoshenko 	/* Lines per panel */
535*24ca3d19SOleksandr Tymoshenko 	timing1 |= ((panel.panel_height - 1) & 0x3ff)
536*24ca3d19SOleksandr Tymoshenko 	    << RASTER_TIMING_1_LPP_SHIFT;
537*24ca3d19SOleksandr Tymoshenko 	timing2 |= (((panel.panel_height - 1) >> 10 ) & 1)
538*24ca3d19SOleksandr Tymoshenko 	    << RASTER_TIMING_2_LPP_B10_SHIFT;
539*24ca3d19SOleksandr Tymoshenko 
540*24ca3d19SOleksandr Tymoshenko 	/* clock signal settings */
541*24ca3d19SOleksandr Tymoshenko 	if (panel.sync_ctrl)
542*24ca3d19SOleksandr Tymoshenko 		timing2 |= RASTER_TIMING_2_PHSVS;
543*24ca3d19SOleksandr Tymoshenko 	if (panel.sync_edge)
544*24ca3d19SOleksandr Tymoshenko 		timing2 |= RASTER_TIMING_2_PHSVS_RISE;
545*24ca3d19SOleksandr Tymoshenko 	else
546*24ca3d19SOleksandr Tymoshenko 		timing2 |= RASTER_TIMING_2_PHSVS_FALL;
547*24ca3d19SOleksandr Tymoshenko 	if (panel.invert_line_clock)
548*24ca3d19SOleksandr Tymoshenko 		timing2 |= RASTER_TIMING_2_IHS;
549*24ca3d19SOleksandr Tymoshenko 	if (panel.invert_frm_clock)
550*24ca3d19SOleksandr Tymoshenko 		timing2 |= RASTER_TIMING_2_IVS;
551*24ca3d19SOleksandr Tymoshenko 	if (panel.panel_invert_pxl_clk)
552*24ca3d19SOleksandr Tymoshenko 		timing2 |= RASTER_TIMING_2_IPC;
553*24ca3d19SOleksandr Tymoshenko 
554*24ca3d19SOleksandr Tymoshenko 	/* AC bias */
555*24ca3d19SOleksandr Tymoshenko 	timing2 |= (panel.ac_bias << RASTER_TIMING_2_ACB_SHIFT);
556*24ca3d19SOleksandr Tymoshenko 	timing2 |= (panel.ac_bias_intrpt << RASTER_TIMING_2_ACBI_SHIFT);
557*24ca3d19SOleksandr Tymoshenko 
558*24ca3d19SOleksandr Tymoshenko 	LCD_WRITE4(sc, LCD_RASTER_TIMING_0, timing0);
559*24ca3d19SOleksandr Tymoshenko 	LCD_WRITE4(sc, LCD_RASTER_TIMING_1, timing1);
560*24ca3d19SOleksandr Tymoshenko 	LCD_WRITE4(sc, LCD_RASTER_TIMING_2, timing2);
561*24ca3d19SOleksandr Tymoshenko 
562*24ca3d19SOleksandr Tymoshenko 	/* DMA settings */
563*24ca3d19SOleksandr Tymoshenko 	reg = LCDDMA_CTRL_FB0_FB1;
564*24ca3d19SOleksandr Tymoshenko 	/* Find power of 2 for current burst size */
565*24ca3d19SOleksandr Tymoshenko 	switch (panel.dma_burst_sz) {
566*24ca3d19SOleksandr Tymoshenko 	case 1:
567*24ca3d19SOleksandr Tymoshenko 		burst_log = 0;
568*24ca3d19SOleksandr Tymoshenko 		break;
569*24ca3d19SOleksandr Tymoshenko 	case 2:
570*24ca3d19SOleksandr Tymoshenko 		burst_log = 1;
571*24ca3d19SOleksandr Tymoshenko 		break;
572*24ca3d19SOleksandr Tymoshenko 	case 4:
573*24ca3d19SOleksandr Tymoshenko 		burst_log = 2;
574*24ca3d19SOleksandr Tymoshenko 		break;
575*24ca3d19SOleksandr Tymoshenko 	case 8:
576*24ca3d19SOleksandr Tymoshenko 		burst_log = 3;
577*24ca3d19SOleksandr Tymoshenko 		break;
578*24ca3d19SOleksandr Tymoshenko 	case 16:
579*24ca3d19SOleksandr Tymoshenko 	default:
580*24ca3d19SOleksandr Tymoshenko 		burst_log = 4;
581*24ca3d19SOleksandr Tymoshenko 		break;
582*24ca3d19SOleksandr Tymoshenko 	}
583*24ca3d19SOleksandr Tymoshenko 	reg |= (burst_log << LCDDMA_CTRL_BURST_SIZE_SHIFT);
584*24ca3d19SOleksandr Tymoshenko 	/* XXX: FIFO TH */
585*24ca3d19SOleksandr Tymoshenko 	reg |= (0 << LCDDMA_CTRL_TH_FIFO_RDY_SHIFT);
586*24ca3d19SOleksandr Tymoshenko 	LCD_WRITE4(sc, LCD_LCDDMA_CTRL, reg);
587*24ca3d19SOleksandr Tymoshenko 
588*24ca3d19SOleksandr Tymoshenko 	LCD_WRITE4(sc, LCD_LCDDMA_FB0_BASE, sc->sc_fb_phys);
589*24ca3d19SOleksandr Tymoshenko 	LCD_WRITE4(sc, LCD_LCDDMA_FB0_CEILING, sc->sc_fb_phys + sc->sc_fb_size - 1);
590*24ca3d19SOleksandr Tymoshenko 	LCD_WRITE4(sc, LCD_LCDDMA_FB1_BASE, sc->sc_fb_phys);
591*24ca3d19SOleksandr Tymoshenko 	LCD_WRITE4(sc, LCD_LCDDMA_FB1_CEILING, sc->sc_fb_phys + sc->sc_fb_size - 1);
592*24ca3d19SOleksandr Tymoshenko 
593*24ca3d19SOleksandr Tymoshenko 	/* Enable LCD */
594*24ca3d19SOleksandr Tymoshenko 	reg = RASTER_CTRL_LCDTFT;
595*24ca3d19SOleksandr Tymoshenko 	reg |= (panel.fdd << RASTER_CTRL_REQDLY_SHIFT);
596*24ca3d19SOleksandr Tymoshenko 	reg |= (PALETTE_DATA_ONLY << RASTER_CTRL_PALMODE_SHIFT);
597*24ca3d19SOleksandr Tymoshenko 	if (panel.bpp >= 24)
598*24ca3d19SOleksandr Tymoshenko 		reg |= RASTER_CTRL_TFT24;
599*24ca3d19SOleksandr Tymoshenko 	if (panel.bpp == 32)
600*24ca3d19SOleksandr Tymoshenko 		reg |= RASTER_CTRL_TFT24_UNPACKED;
601*24ca3d19SOleksandr Tymoshenko 	LCD_WRITE4(sc, LCD_RASTER_CTRL, reg);
602*24ca3d19SOleksandr Tymoshenko 
603*24ca3d19SOleksandr Tymoshenko 	LCD_WRITE4(sc, LCD_CLKC_ENABLE,
604*24ca3d19SOleksandr Tymoshenko 	    CLKC_ENABLE_DMA | CLKC_ENABLE_LDID | CLKC_ENABLE_CORE);
605*24ca3d19SOleksandr Tymoshenko 
606*24ca3d19SOleksandr Tymoshenko 	LCD_WRITE4(sc, LCD_CLKC_RESET, CLKC_RESET_MAIN);
607*24ca3d19SOleksandr Tymoshenko 	DELAY(100);
608*24ca3d19SOleksandr Tymoshenko 	LCD_WRITE4(sc, LCD_CLKC_RESET, 0);
609*24ca3d19SOleksandr Tymoshenko 
610*24ca3d19SOleksandr Tymoshenko 	reg = IRQ_EOF1 | IRQ_EOF0 | IRQ_FUF | IRQ_PL |
611*24ca3d19SOleksandr Tymoshenko 	    IRQ_ACB | IRQ_SYNC_LOST |  IRQ_RASTER_DONE |
612*24ca3d19SOleksandr Tymoshenko 	    IRQ_FRAME_DONE;
613*24ca3d19SOleksandr Tymoshenko 	LCD_WRITE4(sc, LCD_IRQENABLE_SET, reg);
614*24ca3d19SOleksandr Tymoshenko 
615*24ca3d19SOleksandr Tymoshenko 	reg = LCD_READ4(sc, LCD_RASTER_CTRL);
616*24ca3d19SOleksandr Tymoshenko  	reg |= RASTER_CTRL_LCDEN;
617*24ca3d19SOleksandr Tymoshenko 	LCD_WRITE4(sc, LCD_RASTER_CTRL, reg);
618*24ca3d19SOleksandr Tymoshenko 
619*24ca3d19SOleksandr Tymoshenko 	LCD_WRITE4(sc, LCD_SYSCONFIG,
620*24ca3d19SOleksandr Tymoshenko 	    SYSCONFIG_STANDBY_SMART | SYSCONFIG_IDLE_SMART);
621*24ca3d19SOleksandr Tymoshenko 
622*24ca3d19SOleksandr Tymoshenko 	/* Init backlight interface */
623*24ca3d19SOleksandr Tymoshenko 	ctx = device_get_sysctl_ctx(sc->sc_dev);
624*24ca3d19SOleksandr Tymoshenko 	tree = device_get_sysctl_tree(sc->sc_dev);
625*24ca3d19SOleksandr Tymoshenko 	sc->sc_oid = SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
626*24ca3d19SOleksandr Tymoshenko 	    "backlight", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
627*24ca3d19SOleksandr Tymoshenko 	    am335x_lcd_sysctl_backlight, "I", "LCD backlight");
628*24ca3d19SOleksandr Tymoshenko 	sc->sc_backlight = 0;
629*24ca3d19SOleksandr Tymoshenko 	/* Check if eCAS interface is available at this point */
630*24ca3d19SOleksandr Tymoshenko 	if (am335x_pwm_config_ecas(PWM_UNIT,
631*24ca3d19SOleksandr Tymoshenko 	    PWM_PERIOD, PWM_PERIOD) == 0)
632*24ca3d19SOleksandr Tymoshenko 		sc->sc_backlight = 100;
633*24ca3d19SOleksandr Tymoshenko 
634*24ca3d19SOleksandr Tymoshenko 	am335x_lcd_syscons_setup((vm_offset_t)sc->sc_fb_base, sc->sc_fb_phys, &panel);
635*24ca3d19SOleksandr Tymoshenko 
636*24ca3d19SOleksandr Tymoshenko 	return (0);
637*24ca3d19SOleksandr Tymoshenko 
638*24ca3d19SOleksandr Tymoshenko fail:
639*24ca3d19SOleksandr Tymoshenko 	return (err);
640*24ca3d19SOleksandr Tymoshenko }
641*24ca3d19SOleksandr Tymoshenko 
642*24ca3d19SOleksandr Tymoshenko static int
643*24ca3d19SOleksandr Tymoshenko am335x_lcd_detach(device_t dev)
644*24ca3d19SOleksandr Tymoshenko {
645*24ca3d19SOleksandr Tymoshenko 	/* Do not let unload driver */
646*24ca3d19SOleksandr Tymoshenko 	return (EBUSY);
647*24ca3d19SOleksandr Tymoshenko }
648*24ca3d19SOleksandr Tymoshenko 
649*24ca3d19SOleksandr Tymoshenko static device_method_t am335x_lcd_methods[] = {
650*24ca3d19SOleksandr Tymoshenko 	DEVMETHOD(device_probe,		am335x_lcd_probe),
651*24ca3d19SOleksandr Tymoshenko 	DEVMETHOD(device_attach,	am335x_lcd_attach),
652*24ca3d19SOleksandr Tymoshenko 	DEVMETHOD(device_detach,	am335x_lcd_detach),
653*24ca3d19SOleksandr Tymoshenko 
654*24ca3d19SOleksandr Tymoshenko 	DEVMETHOD_END
655*24ca3d19SOleksandr Tymoshenko };
656*24ca3d19SOleksandr Tymoshenko 
657*24ca3d19SOleksandr Tymoshenko static driver_t am335x_lcd_driver = {
658*24ca3d19SOleksandr Tymoshenko 	"am335x_lcd",
659*24ca3d19SOleksandr Tymoshenko 	am335x_lcd_methods,
660*24ca3d19SOleksandr Tymoshenko 	sizeof(struct am335x_lcd_softc),
661*24ca3d19SOleksandr Tymoshenko };
662*24ca3d19SOleksandr Tymoshenko 
663*24ca3d19SOleksandr Tymoshenko static devclass_t am335x_lcd_devclass;
664*24ca3d19SOleksandr Tymoshenko 
665*24ca3d19SOleksandr Tymoshenko DRIVER_MODULE(am335x_lcd, simplebus, am335x_lcd_driver, am335x_lcd_devclass, 0, 0);
666*24ca3d19SOleksandr Tymoshenko MODULE_VERSION(am335x_lcd, 1);
667*24ca3d19SOleksandr Tymoshenko MODULE_DEPEND(am335x_lcd, simplebus, 1, 1, 1);
668