124ca3d19SOleksandr Tymoshenko /*- 224ca3d19SOleksandr Tymoshenko * Copyright 2013 Oleksandr Tymoshenko <gonzo@freebsd.org> 324ca3d19SOleksandr Tymoshenko * All rights reserved. 424ca3d19SOleksandr Tymoshenko * 524ca3d19SOleksandr Tymoshenko * Redistribution and use in source and binary forms, with or without 624ca3d19SOleksandr Tymoshenko * modification, are permitted provided that the following conditions 724ca3d19SOleksandr Tymoshenko * are met: 824ca3d19SOleksandr Tymoshenko * 1. Redistributions of source code must retain the above copyright 924ca3d19SOleksandr Tymoshenko * notice, this list of conditions and the following disclaimer. 1024ca3d19SOleksandr Tymoshenko * 2. Redistributions in binary form must reproduce the above copyright 1124ca3d19SOleksandr Tymoshenko * notice, this list of conditions and the following disclaimer in the 1224ca3d19SOleksandr Tymoshenko * documentation and/or other materials provided with the distribution. 1324ca3d19SOleksandr Tymoshenko * 1424ca3d19SOleksandr Tymoshenko * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1524ca3d19SOleksandr Tymoshenko * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1624ca3d19SOleksandr Tymoshenko * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1724ca3d19SOleksandr Tymoshenko * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 1824ca3d19SOleksandr Tymoshenko * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1924ca3d19SOleksandr Tymoshenko * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2024ca3d19SOleksandr Tymoshenko * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2124ca3d19SOleksandr Tymoshenko * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2224ca3d19SOleksandr Tymoshenko * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2324ca3d19SOleksandr Tymoshenko * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2424ca3d19SOleksandr Tymoshenko * SUCH DAMAGE. 2524ca3d19SOleksandr Tymoshenko */ 2624ca3d19SOleksandr Tymoshenko 2724ca3d19SOleksandr Tymoshenko #include <sys/cdefs.h> 2824ca3d19SOleksandr Tymoshenko __FBSDID("$FreeBSD$"); 2924ca3d19SOleksandr Tymoshenko 3024ca3d19SOleksandr Tymoshenko #include <sys/param.h> 3124ca3d19SOleksandr Tymoshenko #include <sys/systm.h> 3224ca3d19SOleksandr Tymoshenko #include <sys/kernel.h> 3324ca3d19SOleksandr Tymoshenko #include <sys/module.h> 3424ca3d19SOleksandr Tymoshenko #include <sys/clock.h> 3524ca3d19SOleksandr Tymoshenko #include <sys/time.h> 3624ca3d19SOleksandr Tymoshenko #include <sys/bus.h> 3724ca3d19SOleksandr Tymoshenko #include <sys/lock.h> 3824ca3d19SOleksandr Tymoshenko #include <sys/mutex.h> 3924ca3d19SOleksandr Tymoshenko #include <sys/resource.h> 4024ca3d19SOleksandr Tymoshenko #include <sys/rman.h> 4124ca3d19SOleksandr Tymoshenko #include <sys/sysctl.h> 4224ca3d19SOleksandr Tymoshenko #include <vm/vm.h> 4324ca3d19SOleksandr Tymoshenko #include <vm/pmap.h> 4424ca3d19SOleksandr Tymoshenko 4524ca3d19SOleksandr Tymoshenko #include <machine/bus.h> 4624ca3d19SOleksandr Tymoshenko 4724ca3d19SOleksandr Tymoshenko #include <dev/fdt/fdt_common.h> 4824ca3d19SOleksandr Tymoshenko #include <dev/ofw/openfirm.h> 4924ca3d19SOleksandr Tymoshenko #include <dev/ofw/ofw_bus.h> 5024ca3d19SOleksandr Tymoshenko #include <dev/ofw/ofw_bus_subr.h> 5124ca3d19SOleksandr Tymoshenko 5224ca3d19SOleksandr Tymoshenko #include <arm/ti/ti_prcm.h> 5324ca3d19SOleksandr Tymoshenko #include <arm/ti/ti_scm.h> 5424ca3d19SOleksandr Tymoshenko 5524ca3d19SOleksandr Tymoshenko #include "am335x_lcd.h" 5624ca3d19SOleksandr Tymoshenko #include "am335x_pwm.h" 5724ca3d19SOleksandr Tymoshenko 5824ca3d19SOleksandr Tymoshenko #define LCD_PID 0x00 5924ca3d19SOleksandr Tymoshenko #define LCD_CTRL 0x04 6024ca3d19SOleksandr Tymoshenko #define CTRL_DIV_MASK 0xff 6124ca3d19SOleksandr Tymoshenko #define CTRL_DIV_SHIFT 8 6224ca3d19SOleksandr Tymoshenko #define CTRL_AUTO_UFLOW_RESTART (1 << 1) 6324ca3d19SOleksandr Tymoshenko #define CTRL_RASTER_MODE 1 6424ca3d19SOleksandr Tymoshenko #define CTRL_LIDD_MODE 0 6524ca3d19SOleksandr Tymoshenko #define LCD_LIDD_CTRL 0x0C 6624ca3d19SOleksandr Tymoshenko #define LCD_LIDD_CS0_CONF 0x10 6724ca3d19SOleksandr Tymoshenko #define LCD_LIDD_CS0_ADDR 0x14 6824ca3d19SOleksandr Tymoshenko #define LCD_LIDD_CS0_DATA 0x18 6924ca3d19SOleksandr Tymoshenko #define LCD_LIDD_CS1_CONF 0x1C 7024ca3d19SOleksandr Tymoshenko #define LCD_LIDD_CS1_ADDR 0x20 7124ca3d19SOleksandr Tymoshenko #define LCD_LIDD_CS1_DATA 0x24 7224ca3d19SOleksandr Tymoshenko #define LCD_RASTER_CTRL 0x28 7324ca3d19SOleksandr Tymoshenko #define RASTER_CTRL_TFT24_UNPACKED (1 << 26) 7424ca3d19SOleksandr Tymoshenko #define RASTER_CTRL_TFT24 (1 << 25) 7524ca3d19SOleksandr Tymoshenko #define RASTER_CTRL_STN565 (1 << 24) 7624ca3d19SOleksandr Tymoshenko #define RASTER_CTRL_TFTPMAP (1 << 23) 7724ca3d19SOleksandr Tymoshenko #define RASTER_CTRL_NIBMODE (1 << 22) 7824ca3d19SOleksandr Tymoshenko #define RASTER_CTRL_PALMODE_SHIFT 20 7924ca3d19SOleksandr Tymoshenko #define PALETTE_PALETTE_AND_DATA 0x00 8024ca3d19SOleksandr Tymoshenko #define PALETTE_PALETTE_ONLY 0x01 8124ca3d19SOleksandr Tymoshenko #define PALETTE_DATA_ONLY 0x02 8224ca3d19SOleksandr Tymoshenko #define RASTER_CTRL_REQDLY_SHIFT 12 8324ca3d19SOleksandr Tymoshenko #define RASTER_CTRL_MONO8B (1 << 9) 8424ca3d19SOleksandr Tymoshenko #define RASTER_CTRL_RBORDER (1 << 8) 8524ca3d19SOleksandr Tymoshenko #define RASTER_CTRL_LCDTFT (1 << 7) 8624ca3d19SOleksandr Tymoshenko #define RASTER_CTRL_LCDBW (1 << 1) 8724ca3d19SOleksandr Tymoshenko #define RASTER_CTRL_LCDEN (1 << 0) 8824ca3d19SOleksandr Tymoshenko #define LCD_RASTER_TIMING_0 0x2C 8924ca3d19SOleksandr Tymoshenko #define RASTER_TIMING_0_HBP_SHIFT 24 9024ca3d19SOleksandr Tymoshenko #define RASTER_TIMING_0_HFP_SHIFT 16 9124ca3d19SOleksandr Tymoshenko #define RASTER_TIMING_0_HSW_SHIFT 10 9224ca3d19SOleksandr Tymoshenko #define RASTER_TIMING_0_PPLLSB_SHIFT 4 9324ca3d19SOleksandr Tymoshenko #define RASTER_TIMING_0_PPLMSB_SHIFT 3 9424ca3d19SOleksandr Tymoshenko #define LCD_RASTER_TIMING_1 0x30 9524ca3d19SOleksandr Tymoshenko #define RASTER_TIMING_1_VBP_SHIFT 24 9624ca3d19SOleksandr Tymoshenko #define RASTER_TIMING_1_VFP_SHIFT 16 9724ca3d19SOleksandr Tymoshenko #define RASTER_TIMING_1_VSW_SHIFT 10 9824ca3d19SOleksandr Tymoshenko #define RASTER_TIMING_1_LPP_SHIFT 0 9924ca3d19SOleksandr Tymoshenko #define LCD_RASTER_TIMING_2 0x34 10024ca3d19SOleksandr Tymoshenko #define RASTER_TIMING_2_HSWHI_SHIFT 27 10124ca3d19SOleksandr Tymoshenko #define RASTER_TIMING_2_LPP_B10_SHIFT 26 10224ca3d19SOleksandr Tymoshenko #define RASTER_TIMING_2_PHSVS (1 << 25) 10324ca3d19SOleksandr Tymoshenko #define RASTER_TIMING_2_PHSVS_RISE (1 << 24) 10424ca3d19SOleksandr Tymoshenko #define RASTER_TIMING_2_PHSVS_FALL (0 << 24) 10524ca3d19SOleksandr Tymoshenko #define RASTER_TIMING_2_IOE (1 << 23) 10624ca3d19SOleksandr Tymoshenko #define RASTER_TIMING_2_IPC (1 << 22) 10724ca3d19SOleksandr Tymoshenko #define RASTER_TIMING_2_IHS (1 << 21) 10824ca3d19SOleksandr Tymoshenko #define RASTER_TIMING_2_IVS (1 << 20) 10924ca3d19SOleksandr Tymoshenko #define RASTER_TIMING_2_ACBI_SHIFT 16 11024ca3d19SOleksandr Tymoshenko #define RASTER_TIMING_2_ACB_SHIFT 8 11124ca3d19SOleksandr Tymoshenko #define RASTER_TIMING_2_HBPHI_SHIFT 4 11224ca3d19SOleksandr Tymoshenko #define RASTER_TIMING_2_HFPHI_SHIFT 0 11324ca3d19SOleksandr Tymoshenko #define LCD_RASTER_SUBPANEL 0x38 11424ca3d19SOleksandr Tymoshenko #define LCD_RASTER_SUBPANEL2 0x3C 11524ca3d19SOleksandr Tymoshenko #define LCD_LCDDMA_CTRL 0x40 11624ca3d19SOleksandr Tymoshenko #define LCDDMA_CTRL_DMA_MASTER_PRIO_SHIFT 16 11724ca3d19SOleksandr Tymoshenko #define LCDDMA_CTRL_TH_FIFO_RDY_SHIFT 8 11824ca3d19SOleksandr Tymoshenko #define LCDDMA_CTRL_BURST_SIZE_SHIFT 4 11924ca3d19SOleksandr Tymoshenko #define LCDDMA_CTRL_BYTES_SWAP (1 << 3) 12024ca3d19SOleksandr Tymoshenko #define LCDDMA_CTRL_BE (1 << 1) 12124ca3d19SOleksandr Tymoshenko #define LCDDMA_CTRL_FB0_ONLY 0 12224ca3d19SOleksandr Tymoshenko #define LCDDMA_CTRL_FB0_FB1 (1 << 0) 12324ca3d19SOleksandr Tymoshenko #define LCD_LCDDMA_FB0_BASE 0x44 12424ca3d19SOleksandr Tymoshenko #define LCD_LCDDMA_FB0_CEILING 0x48 12524ca3d19SOleksandr Tymoshenko #define LCD_LCDDMA_FB1_BASE 0x4C 12624ca3d19SOleksandr Tymoshenko #define LCD_LCDDMA_FB1_CEILING 0x50 12724ca3d19SOleksandr Tymoshenko #define LCD_SYSCONFIG 0x54 12824ca3d19SOleksandr Tymoshenko #define SYSCONFIG_STANDBY_FORCE (0 << 4) 12924ca3d19SOleksandr Tymoshenko #define SYSCONFIG_STANDBY_NONE (1 << 4) 13024ca3d19SOleksandr Tymoshenko #define SYSCONFIG_STANDBY_SMART (2 << 4) 13124ca3d19SOleksandr Tymoshenko #define SYSCONFIG_IDLE_FORCE (0 << 2) 13224ca3d19SOleksandr Tymoshenko #define SYSCONFIG_IDLE_NONE (1 << 2) 13324ca3d19SOleksandr Tymoshenko #define SYSCONFIG_IDLE_SMART (2 << 2) 13424ca3d19SOleksandr Tymoshenko #define LCD_IRQSTATUS_RAW 0x58 13524ca3d19SOleksandr Tymoshenko #define LCD_IRQSTATUS 0x5C 13624ca3d19SOleksandr Tymoshenko #define LCD_IRQENABLE_SET 0x60 13724ca3d19SOleksandr Tymoshenko #define LCD_IRQENABLE_CLEAR 0x64 13824ca3d19SOleksandr Tymoshenko #define IRQ_EOF1 (1 << 9) 13924ca3d19SOleksandr Tymoshenko #define IRQ_EOF0 (1 << 8) 14024ca3d19SOleksandr Tymoshenko #define IRQ_PL (1 << 6) 14124ca3d19SOleksandr Tymoshenko #define IRQ_FUF (1 << 5) 14224ca3d19SOleksandr Tymoshenko #define IRQ_ACB (1 << 3) 14324ca3d19SOleksandr Tymoshenko #define IRQ_SYNC_LOST (1 << 2) 14424ca3d19SOleksandr Tymoshenko #define IRQ_RASTER_DONE (1 << 1) 14524ca3d19SOleksandr Tymoshenko #define IRQ_FRAME_DONE (1 << 0) 14624ca3d19SOleksandr Tymoshenko #define LCD_CLKC_ENABLE 0x6C 14724ca3d19SOleksandr Tymoshenko #define CLKC_ENABLE_DMA (1 << 2) 14824ca3d19SOleksandr Tymoshenko #define CLKC_ENABLE_LDID (1 << 1) 14924ca3d19SOleksandr Tymoshenko #define CLKC_ENABLE_CORE (1 << 0) 15024ca3d19SOleksandr Tymoshenko #define LCD_CLKC_RESET 0x70 15124ca3d19SOleksandr Tymoshenko #define CLKC_RESET_MAIN (1 << 3) 15224ca3d19SOleksandr Tymoshenko #define CLKC_RESET_DMA (1 << 2) 15324ca3d19SOleksandr Tymoshenko #define CLKC_RESET_LDID (1 << 1) 15424ca3d19SOleksandr Tymoshenko #define CLKC_RESET_CORE (1 << 0) 15524ca3d19SOleksandr Tymoshenko 15624ca3d19SOleksandr Tymoshenko #define LCD_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx) 15724ca3d19SOleksandr Tymoshenko #define LCD_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx) 15824ca3d19SOleksandr Tymoshenko #define LCD_LOCK_INIT(_sc) mtx_init(&(_sc)->sc_mtx, \ 15924ca3d19SOleksandr Tymoshenko device_get_nameunit(_sc->sc_dev), "am335x_lcd", MTX_DEF) 16024ca3d19SOleksandr Tymoshenko #define LCD_LOCK_DESTROY(_sc) mtx_destroy(&(_sc)->sc_mtx); 16124ca3d19SOleksandr Tymoshenko 16224ca3d19SOleksandr Tymoshenko #define LCD_READ4(_sc, reg) bus_read_4((_sc)->sc_mem_res, reg); 16324ca3d19SOleksandr Tymoshenko #define LCD_WRITE4(_sc, reg, value) \ 16424ca3d19SOleksandr Tymoshenko bus_write_4((_sc)->sc_mem_res, reg, value); 16524ca3d19SOleksandr Tymoshenko 16624ca3d19SOleksandr Tymoshenko 16724ca3d19SOleksandr Tymoshenko /* Backlight is controlled by eCAS interface on PWM unit 0 */ 16824ca3d19SOleksandr Tymoshenko #define PWM_UNIT 0 16924ca3d19SOleksandr Tymoshenko #define PWM_PERIOD 100 17024ca3d19SOleksandr Tymoshenko 17124ca3d19SOleksandr Tymoshenko struct am335x_lcd_softc { 17224ca3d19SOleksandr Tymoshenko device_t sc_dev; 17324ca3d19SOleksandr Tymoshenko struct resource *sc_mem_res; 17424ca3d19SOleksandr Tymoshenko struct resource *sc_irq_res; 17524ca3d19SOleksandr Tymoshenko void *sc_intr_hl; 17624ca3d19SOleksandr Tymoshenko struct mtx sc_mtx; 17724ca3d19SOleksandr Tymoshenko int sc_backlight; 17824ca3d19SOleksandr Tymoshenko struct sysctl_oid *sc_oid; 17924ca3d19SOleksandr Tymoshenko 18024ca3d19SOleksandr Tymoshenko /* Framebuffer */ 18124ca3d19SOleksandr Tymoshenko bus_dma_tag_t sc_dma_tag; 18224ca3d19SOleksandr Tymoshenko bus_dmamap_t sc_dma_map; 18324ca3d19SOleksandr Tymoshenko size_t sc_fb_size; 18424ca3d19SOleksandr Tymoshenko bus_addr_t sc_fb_phys; 18524ca3d19SOleksandr Tymoshenko uint8_t *sc_fb_base; 18624ca3d19SOleksandr Tymoshenko }; 18724ca3d19SOleksandr Tymoshenko 18824ca3d19SOleksandr Tymoshenko static void 18924ca3d19SOleksandr Tymoshenko am335x_fb_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int err) 19024ca3d19SOleksandr Tymoshenko { 19124ca3d19SOleksandr Tymoshenko bus_addr_t *addr; 19224ca3d19SOleksandr Tymoshenko 19324ca3d19SOleksandr Tymoshenko if (err) 19424ca3d19SOleksandr Tymoshenko return; 19524ca3d19SOleksandr Tymoshenko 19624ca3d19SOleksandr Tymoshenko addr = (bus_addr_t*)arg; 19724ca3d19SOleksandr Tymoshenko *addr = segs[0].ds_addr; 19824ca3d19SOleksandr Tymoshenko } 19924ca3d19SOleksandr Tymoshenko 20024ca3d19SOleksandr Tymoshenko static uint32_t 20124ca3d19SOleksandr Tymoshenko am335x_lcd_calc_divisor(uint32_t reference, uint32_t freq) 20224ca3d19SOleksandr Tymoshenko { 20324ca3d19SOleksandr Tymoshenko uint32_t div; 20424ca3d19SOleksandr Tymoshenko /* Raster mode case: divisors are in range from 2 to 255 */ 20524ca3d19SOleksandr Tymoshenko for (div = 2; div < 255; div++) 20624ca3d19SOleksandr Tymoshenko if (reference/div <= freq) 20724ca3d19SOleksandr Tymoshenko return (div); 20824ca3d19SOleksandr Tymoshenko 20924ca3d19SOleksandr Tymoshenko return (255); 21024ca3d19SOleksandr Tymoshenko } 21124ca3d19SOleksandr Tymoshenko 21224ca3d19SOleksandr Tymoshenko static int 21324ca3d19SOleksandr Tymoshenko am335x_lcd_sysctl_backlight(SYSCTL_HANDLER_ARGS) 21424ca3d19SOleksandr Tymoshenko { 21524ca3d19SOleksandr Tymoshenko struct am335x_lcd_softc *sc = (struct am335x_lcd_softc*)arg1; 21624ca3d19SOleksandr Tymoshenko int error; 21724ca3d19SOleksandr Tymoshenko int backlight; 21824ca3d19SOleksandr Tymoshenko 21924ca3d19SOleksandr Tymoshenko backlight = sc->sc_backlight;; 22024ca3d19SOleksandr Tymoshenko error = sysctl_handle_int(oidp, &backlight, 0, req); 22124ca3d19SOleksandr Tymoshenko 22224ca3d19SOleksandr Tymoshenko if (error != 0 || req->newptr == NULL) 22324ca3d19SOleksandr Tymoshenko return (error); 22424ca3d19SOleksandr Tymoshenko 22524ca3d19SOleksandr Tymoshenko if (backlight < 0) 22624ca3d19SOleksandr Tymoshenko backlight = 0; 22724ca3d19SOleksandr Tymoshenko if (backlight > 100) 22824ca3d19SOleksandr Tymoshenko backlight = 100; 22924ca3d19SOleksandr Tymoshenko 23024ca3d19SOleksandr Tymoshenko LCD_LOCK(sc); 23124ca3d19SOleksandr Tymoshenko error = am335x_pwm_config_ecas(PWM_UNIT, PWM_PERIOD, 23224ca3d19SOleksandr Tymoshenko backlight*PWM_PERIOD/100); 23324ca3d19SOleksandr Tymoshenko if (error == 0) 23424ca3d19SOleksandr Tymoshenko sc->sc_backlight = backlight; 23524ca3d19SOleksandr Tymoshenko LCD_UNLOCK(sc); 23624ca3d19SOleksandr Tymoshenko 23724ca3d19SOleksandr Tymoshenko return (error); 23824ca3d19SOleksandr Tymoshenko } 23924ca3d19SOleksandr Tymoshenko 24024ca3d19SOleksandr Tymoshenko static int 24124ca3d19SOleksandr Tymoshenko am335x_read_panel_property(device_t dev, const char *name, uint32_t *val) 24224ca3d19SOleksandr Tymoshenko { 24324ca3d19SOleksandr Tymoshenko phandle_t node; 24424ca3d19SOleksandr Tymoshenko pcell_t cell; 24524ca3d19SOleksandr Tymoshenko 24624ca3d19SOleksandr Tymoshenko node = ofw_bus_get_node(dev); 24724ca3d19SOleksandr Tymoshenko if ((OF_getprop(node, name, &cell, sizeof(cell))) <= 0) { 24824ca3d19SOleksandr Tymoshenko device_printf(dev, "missing '%s' attribute in LCD panel info\n", 24924ca3d19SOleksandr Tymoshenko name); 25024ca3d19SOleksandr Tymoshenko return (ENXIO); 25124ca3d19SOleksandr Tymoshenko } 25224ca3d19SOleksandr Tymoshenko 25324ca3d19SOleksandr Tymoshenko *val = fdt32_to_cpu(cell); 25424ca3d19SOleksandr Tymoshenko 25524ca3d19SOleksandr Tymoshenko return (0); 25624ca3d19SOleksandr Tymoshenko } 25724ca3d19SOleksandr Tymoshenko 25824ca3d19SOleksandr Tymoshenko static int 25924ca3d19SOleksandr Tymoshenko am335x_read_panel_info(device_t dev, struct panel_info *panel) 26024ca3d19SOleksandr Tymoshenko { 26124ca3d19SOleksandr Tymoshenko int error; 26224ca3d19SOleksandr Tymoshenko 26324ca3d19SOleksandr Tymoshenko error = 0; 26424ca3d19SOleksandr Tymoshenko if ((error = am335x_read_panel_property(dev, 26524ca3d19SOleksandr Tymoshenko "panel_width", &panel->panel_width))) 26624ca3d19SOleksandr Tymoshenko goto out; 26724ca3d19SOleksandr Tymoshenko 26824ca3d19SOleksandr Tymoshenko if ((error = am335x_read_panel_property(dev, 26924ca3d19SOleksandr Tymoshenko "panel_height", &panel->panel_height))) 27024ca3d19SOleksandr Tymoshenko goto out; 27124ca3d19SOleksandr Tymoshenko 27224ca3d19SOleksandr Tymoshenko if ((error = am335x_read_panel_property(dev, 27324ca3d19SOleksandr Tymoshenko "panel_hfp", &panel->panel_hfp))) 27424ca3d19SOleksandr Tymoshenko goto out; 27524ca3d19SOleksandr Tymoshenko 27624ca3d19SOleksandr Tymoshenko if ((error = am335x_read_panel_property(dev, 27724ca3d19SOleksandr Tymoshenko "panel_hbp", &panel->panel_hbp))) 27824ca3d19SOleksandr Tymoshenko goto out; 27924ca3d19SOleksandr Tymoshenko 28024ca3d19SOleksandr Tymoshenko if ((error = am335x_read_panel_property(dev, 28124ca3d19SOleksandr Tymoshenko "panel_hsw", &panel->panel_hsw))) 28224ca3d19SOleksandr Tymoshenko goto out; 28324ca3d19SOleksandr Tymoshenko 28424ca3d19SOleksandr Tymoshenko if ((error = am335x_read_panel_property(dev, 28524ca3d19SOleksandr Tymoshenko "panel_vfp", &panel->panel_vfp))) 28624ca3d19SOleksandr Tymoshenko goto out; 28724ca3d19SOleksandr Tymoshenko 28824ca3d19SOleksandr Tymoshenko if ((error = am335x_read_panel_property(dev, 28924ca3d19SOleksandr Tymoshenko "panel_vbp", &panel->panel_vbp))) 29024ca3d19SOleksandr Tymoshenko goto out; 29124ca3d19SOleksandr Tymoshenko 29224ca3d19SOleksandr Tymoshenko if ((error = am335x_read_panel_property(dev, 29324ca3d19SOleksandr Tymoshenko "panel_vsw", &panel->panel_vsw))) 29424ca3d19SOleksandr Tymoshenko goto out; 29524ca3d19SOleksandr Tymoshenko 29624ca3d19SOleksandr Tymoshenko if ((error = am335x_read_panel_property(dev, 29724ca3d19SOleksandr Tymoshenko "panel_pxl_clk", &panel->panel_pxl_clk))) 29824ca3d19SOleksandr Tymoshenko goto out; 29924ca3d19SOleksandr Tymoshenko 30024ca3d19SOleksandr Tymoshenko if ((error = am335x_read_panel_property(dev, 30124ca3d19SOleksandr Tymoshenko "panel_invert_pxl_clk", &panel->panel_invert_pxl_clk))) 30224ca3d19SOleksandr Tymoshenko goto out; 30324ca3d19SOleksandr Tymoshenko 30424ca3d19SOleksandr Tymoshenko if ((error = am335x_read_panel_property(dev, 30524ca3d19SOleksandr Tymoshenko "ac_bias", &panel->ac_bias))) 30624ca3d19SOleksandr Tymoshenko goto out; 30724ca3d19SOleksandr Tymoshenko 30824ca3d19SOleksandr Tymoshenko if ((error = am335x_read_panel_property(dev, 30924ca3d19SOleksandr Tymoshenko "ac_bias_intrpt", &panel->ac_bias_intrpt))) 31024ca3d19SOleksandr Tymoshenko goto out; 31124ca3d19SOleksandr Tymoshenko 31224ca3d19SOleksandr Tymoshenko if ((error = am335x_read_panel_property(dev, 31324ca3d19SOleksandr Tymoshenko "dma_burst_sz", &panel->dma_burst_sz))) 31424ca3d19SOleksandr Tymoshenko goto out; 31524ca3d19SOleksandr Tymoshenko 31624ca3d19SOleksandr Tymoshenko if ((error = am335x_read_panel_property(dev, 31724ca3d19SOleksandr Tymoshenko "bpp", &panel->bpp))) 31824ca3d19SOleksandr Tymoshenko goto out; 31924ca3d19SOleksandr Tymoshenko 32024ca3d19SOleksandr Tymoshenko if ((error = am335x_read_panel_property(dev, 32124ca3d19SOleksandr Tymoshenko "fdd", &panel->fdd))) 32224ca3d19SOleksandr Tymoshenko goto out; 32324ca3d19SOleksandr Tymoshenko 32424ca3d19SOleksandr Tymoshenko if ((error = am335x_read_panel_property(dev, 32524ca3d19SOleksandr Tymoshenko "invert_line_clock", &panel->invert_line_clock))) 32624ca3d19SOleksandr Tymoshenko goto out; 32724ca3d19SOleksandr Tymoshenko 32824ca3d19SOleksandr Tymoshenko if ((error = am335x_read_panel_property(dev, 32924ca3d19SOleksandr Tymoshenko "invert_frm_clock", &panel->invert_frm_clock))) 33024ca3d19SOleksandr Tymoshenko goto out; 33124ca3d19SOleksandr Tymoshenko 33224ca3d19SOleksandr Tymoshenko if ((error = am335x_read_panel_property(dev, 33324ca3d19SOleksandr Tymoshenko "sync_edge", &panel->sync_edge))) 33424ca3d19SOleksandr Tymoshenko goto out; 33524ca3d19SOleksandr Tymoshenko 33624ca3d19SOleksandr Tymoshenko error = am335x_read_panel_property(dev, 33724ca3d19SOleksandr Tymoshenko "sync_ctrl", &panel->sync_ctrl); 33824ca3d19SOleksandr Tymoshenko 33924ca3d19SOleksandr Tymoshenko out: 34024ca3d19SOleksandr Tymoshenko return (error); 34124ca3d19SOleksandr Tymoshenko } 34224ca3d19SOleksandr Tymoshenko 34324ca3d19SOleksandr Tymoshenko static void 34424ca3d19SOleksandr Tymoshenko am335x_lcd_intr(void *arg) 34524ca3d19SOleksandr Tymoshenko { 34624ca3d19SOleksandr Tymoshenko struct am335x_lcd_softc *sc = arg; 34724ca3d19SOleksandr Tymoshenko uint32_t reg; 34824ca3d19SOleksandr Tymoshenko 34924ca3d19SOleksandr Tymoshenko reg = LCD_READ4(sc, LCD_IRQSTATUS); 35024ca3d19SOleksandr Tymoshenko LCD_WRITE4(sc, LCD_IRQSTATUS, reg); 35124ca3d19SOleksandr Tymoshenko 35224ca3d19SOleksandr Tymoshenko if (reg & IRQ_SYNC_LOST) { 35324ca3d19SOleksandr Tymoshenko reg = LCD_READ4(sc, LCD_RASTER_CTRL); 35424ca3d19SOleksandr Tymoshenko reg &= ~RASTER_CTRL_LCDEN; 35524ca3d19SOleksandr Tymoshenko LCD_WRITE4(sc, LCD_RASTER_CTRL, reg); 35624ca3d19SOleksandr Tymoshenko 35724ca3d19SOleksandr Tymoshenko reg = LCD_READ4(sc, LCD_RASTER_CTRL); 35824ca3d19SOleksandr Tymoshenko reg |= RASTER_CTRL_LCDEN; 35924ca3d19SOleksandr Tymoshenko LCD_WRITE4(sc, LCD_RASTER_CTRL, reg); 36024ca3d19SOleksandr Tymoshenko return; 36124ca3d19SOleksandr Tymoshenko } 36224ca3d19SOleksandr Tymoshenko 36324ca3d19SOleksandr Tymoshenko if (reg & IRQ_PL) { 36424ca3d19SOleksandr Tymoshenko reg = LCD_READ4(sc, LCD_RASTER_CTRL); 36524ca3d19SOleksandr Tymoshenko reg &= ~RASTER_CTRL_LCDEN; 36624ca3d19SOleksandr Tymoshenko LCD_WRITE4(sc, LCD_RASTER_CTRL, reg); 36724ca3d19SOleksandr Tymoshenko 36824ca3d19SOleksandr Tymoshenko reg = LCD_READ4(sc, LCD_RASTER_CTRL); 36924ca3d19SOleksandr Tymoshenko reg |= RASTER_CTRL_LCDEN; 37024ca3d19SOleksandr Tymoshenko LCD_WRITE4(sc, LCD_RASTER_CTRL, reg); 37124ca3d19SOleksandr Tymoshenko return; 37224ca3d19SOleksandr Tymoshenko } 37324ca3d19SOleksandr Tymoshenko 37424ca3d19SOleksandr Tymoshenko if (reg & IRQ_EOF0) { 37524ca3d19SOleksandr Tymoshenko LCD_WRITE4(sc, LCD_LCDDMA_FB0_BASE, sc->sc_fb_phys); 37624ca3d19SOleksandr Tymoshenko LCD_WRITE4(sc, LCD_LCDDMA_FB0_CEILING, sc->sc_fb_phys + sc->sc_fb_size - 1); 37724ca3d19SOleksandr Tymoshenko reg &= ~IRQ_EOF0; 37824ca3d19SOleksandr Tymoshenko } 37924ca3d19SOleksandr Tymoshenko 38024ca3d19SOleksandr Tymoshenko if (reg & IRQ_EOF1) { 38124ca3d19SOleksandr Tymoshenko LCD_WRITE4(sc, LCD_LCDDMA_FB1_BASE, sc->sc_fb_phys); 38224ca3d19SOleksandr Tymoshenko LCD_WRITE4(sc, LCD_LCDDMA_FB1_CEILING, sc->sc_fb_phys + sc->sc_fb_size - 1); 38324ca3d19SOleksandr Tymoshenko reg &= ~IRQ_EOF1; 38424ca3d19SOleksandr Tymoshenko } 38524ca3d19SOleksandr Tymoshenko 38624ca3d19SOleksandr Tymoshenko if (reg & IRQ_FUF) { 38724ca3d19SOleksandr Tymoshenko /* TODO: Handle FUF */ 38824ca3d19SOleksandr Tymoshenko } 38924ca3d19SOleksandr Tymoshenko 39024ca3d19SOleksandr Tymoshenko if (reg & IRQ_ACB) { 39124ca3d19SOleksandr Tymoshenko /* TODO: Handle ACB */ 39224ca3d19SOleksandr Tymoshenko } 39324ca3d19SOleksandr Tymoshenko } 39424ca3d19SOleksandr Tymoshenko 39524ca3d19SOleksandr Tymoshenko static int 39624ca3d19SOleksandr Tymoshenko am335x_lcd_probe(device_t dev) 39724ca3d19SOleksandr Tymoshenko { 39824ca3d19SOleksandr Tymoshenko if (!ofw_bus_is_compatible(dev, "ti,am335x-lcd")) 39924ca3d19SOleksandr Tymoshenko return (ENXIO); 40024ca3d19SOleksandr Tymoshenko 40124ca3d19SOleksandr Tymoshenko device_set_desc(dev, "AM335x LCD controller"); 40224ca3d19SOleksandr Tymoshenko 40324ca3d19SOleksandr Tymoshenko return (0); 40424ca3d19SOleksandr Tymoshenko } 40524ca3d19SOleksandr Tymoshenko 40624ca3d19SOleksandr Tymoshenko static int 40724ca3d19SOleksandr Tymoshenko am335x_lcd_attach(device_t dev) 40824ca3d19SOleksandr Tymoshenko { 40924ca3d19SOleksandr Tymoshenko struct am335x_lcd_softc *sc; 41024ca3d19SOleksandr Tymoshenko int rid; 41124ca3d19SOleksandr Tymoshenko int div; 41224ca3d19SOleksandr Tymoshenko struct panel_info panel; 41324ca3d19SOleksandr Tymoshenko uint32_t reg, timing0, timing1, timing2; 41424ca3d19SOleksandr Tymoshenko struct sysctl_ctx_list *ctx; 41524ca3d19SOleksandr Tymoshenko struct sysctl_oid *tree; 41624ca3d19SOleksandr Tymoshenko uint32_t burst_log; 41724ca3d19SOleksandr Tymoshenko int err; 41824ca3d19SOleksandr Tymoshenko size_t dma_size; 41924ca3d19SOleksandr Tymoshenko 42024ca3d19SOleksandr Tymoshenko sc = device_get_softc(dev); 42124ca3d19SOleksandr Tymoshenko sc->sc_dev = dev; 42224ca3d19SOleksandr Tymoshenko 42324ca3d19SOleksandr Tymoshenko if (am335x_read_panel_info(dev, &panel)) 42424ca3d19SOleksandr Tymoshenko return (ENXIO); 42524ca3d19SOleksandr Tymoshenko 42624ca3d19SOleksandr Tymoshenko int ref_freq = 0; 42724ca3d19SOleksandr Tymoshenko ti_prcm_clk_enable(LCDC_CLK); 42824ca3d19SOleksandr Tymoshenko if (ti_prcm_clk_get_source_freq(LCDC_CLK, &ref_freq)) { 42924ca3d19SOleksandr Tymoshenko device_printf(dev, "Can't get reference frequency\n"); 43024ca3d19SOleksandr Tymoshenko return (ENXIO); 43124ca3d19SOleksandr Tymoshenko } 43224ca3d19SOleksandr Tymoshenko 43324ca3d19SOleksandr Tymoshenko rid = 0; 43424ca3d19SOleksandr Tymoshenko sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 43524ca3d19SOleksandr Tymoshenko RF_ACTIVE); 43624ca3d19SOleksandr Tymoshenko if (!sc->sc_mem_res) { 43724ca3d19SOleksandr Tymoshenko device_printf(dev, "cannot allocate memory window\n"); 43824ca3d19SOleksandr Tymoshenko return (ENXIO); 43924ca3d19SOleksandr Tymoshenko } 44024ca3d19SOleksandr Tymoshenko 44124ca3d19SOleksandr Tymoshenko rid = 0; 44224ca3d19SOleksandr Tymoshenko sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 44324ca3d19SOleksandr Tymoshenko RF_ACTIVE); 44424ca3d19SOleksandr Tymoshenko if (!sc->sc_irq_res) { 44524ca3d19SOleksandr Tymoshenko bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->sc_mem_res); 44624ca3d19SOleksandr Tymoshenko device_printf(dev, "cannot allocate interrupt\n"); 44724ca3d19SOleksandr Tymoshenko return (ENXIO); 44824ca3d19SOleksandr Tymoshenko } 44924ca3d19SOleksandr Tymoshenko 45024ca3d19SOleksandr Tymoshenko if (bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_MISC | INTR_MPSAFE, 45124ca3d19SOleksandr Tymoshenko NULL, am335x_lcd_intr, sc, 45224ca3d19SOleksandr Tymoshenko &sc->sc_intr_hl) != 0) { 45324ca3d19SOleksandr Tymoshenko bus_release_resource(dev, SYS_RES_IRQ, rid, 45424ca3d19SOleksandr Tymoshenko sc->sc_irq_res); 45524ca3d19SOleksandr Tymoshenko bus_release_resource(dev, SYS_RES_MEMORY, rid, 45624ca3d19SOleksandr Tymoshenko sc->sc_mem_res); 45724ca3d19SOleksandr Tymoshenko device_printf(dev, "Unable to setup the irq handler.\n"); 45824ca3d19SOleksandr Tymoshenko return (ENXIO); 45924ca3d19SOleksandr Tymoshenko } 46024ca3d19SOleksandr Tymoshenko 46124ca3d19SOleksandr Tymoshenko LCD_LOCK_INIT(sc); 46224ca3d19SOleksandr Tymoshenko 46324ca3d19SOleksandr Tymoshenko /* Panle initialization */ 46424ca3d19SOleksandr Tymoshenko dma_size = round_page(panel.panel_width*panel.panel_height*panel.bpp/8); 46524ca3d19SOleksandr Tymoshenko 46624ca3d19SOleksandr Tymoshenko /* 46724ca3d19SOleksandr Tymoshenko * Now allocate framebuffer memory 46824ca3d19SOleksandr Tymoshenko */ 46924ca3d19SOleksandr Tymoshenko err = bus_dma_tag_create( 47024ca3d19SOleksandr Tymoshenko bus_get_dma_tag(dev), 47124ca3d19SOleksandr Tymoshenko 4, 0, /* alignment, boundary */ 47224ca3d19SOleksandr Tymoshenko BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 47324ca3d19SOleksandr Tymoshenko BUS_SPACE_MAXADDR, /* highaddr */ 47424ca3d19SOleksandr Tymoshenko NULL, NULL, /* filter, filterarg */ 47524ca3d19SOleksandr Tymoshenko dma_size, 1, /* maxsize, nsegments */ 47624ca3d19SOleksandr Tymoshenko dma_size, 0, /* maxsegsize, flags */ 47724ca3d19SOleksandr Tymoshenko NULL, NULL, /* lockfunc, lockarg */ 47824ca3d19SOleksandr Tymoshenko &sc->sc_dma_tag); 47924ca3d19SOleksandr Tymoshenko if (err) 48024ca3d19SOleksandr Tymoshenko goto fail; 48124ca3d19SOleksandr Tymoshenko 48224ca3d19SOleksandr Tymoshenko err = bus_dmamem_alloc(sc->sc_dma_tag, (void **)&sc->sc_fb_base, 48324ca3d19SOleksandr Tymoshenko 0, &sc->sc_dma_map); 48424ca3d19SOleksandr Tymoshenko 48524ca3d19SOleksandr Tymoshenko if (err) { 48624ca3d19SOleksandr Tymoshenko device_printf(dev, "cannot allocate framebuffer\n"); 48724ca3d19SOleksandr Tymoshenko goto fail; 48824ca3d19SOleksandr Tymoshenko } 48924ca3d19SOleksandr Tymoshenko 49024ca3d19SOleksandr Tymoshenko err = bus_dmamap_load(sc->sc_dma_tag, sc->sc_dma_map, sc->sc_fb_base, 49124ca3d19SOleksandr Tymoshenko dma_size, am335x_fb_dmamap_cb, &sc->sc_fb_phys, BUS_DMA_NOWAIT); 49224ca3d19SOleksandr Tymoshenko 49324ca3d19SOleksandr Tymoshenko if (err) { 49424ca3d19SOleksandr Tymoshenko device_printf(dev, "cannot load DMA map\n"); 49524ca3d19SOleksandr Tymoshenko goto fail; 49624ca3d19SOleksandr Tymoshenko } 49724ca3d19SOleksandr Tymoshenko 49824ca3d19SOleksandr Tymoshenko /* Make sure it's blank */ 49924ca3d19SOleksandr Tymoshenko memset(sc->sc_fb_base, 0x00, dma_size); 50024ca3d19SOleksandr Tymoshenko 50124ca3d19SOleksandr Tymoshenko /* Calculate actual FB Size */ 50224ca3d19SOleksandr Tymoshenko sc->sc_fb_size = panel.panel_width*panel.panel_height*panel.bpp/8; 50324ca3d19SOleksandr Tymoshenko 50424ca3d19SOleksandr Tymoshenko /* Only raster mode is supported */ 50524ca3d19SOleksandr Tymoshenko reg = CTRL_RASTER_MODE; 50624ca3d19SOleksandr Tymoshenko div = am335x_lcd_calc_divisor(ref_freq, panel.panel_pxl_clk); 50724ca3d19SOleksandr Tymoshenko reg |= (div << CTRL_DIV_SHIFT); 50824ca3d19SOleksandr Tymoshenko LCD_WRITE4(sc, LCD_CTRL, reg); 50924ca3d19SOleksandr Tymoshenko 51024ca3d19SOleksandr Tymoshenko /* Set timing */ 51124ca3d19SOleksandr Tymoshenko timing0 = timing1 = timing2 = 0; 51224ca3d19SOleksandr Tymoshenko 51324ca3d19SOleksandr Tymoshenko /* Horizontal back porch */ 51424ca3d19SOleksandr Tymoshenko timing0 |= (panel.panel_hbp & 0xff) << RASTER_TIMING_0_HBP_SHIFT; 51524ca3d19SOleksandr Tymoshenko timing2 |= ((panel.panel_hbp >> 8) & 3) << RASTER_TIMING_2_HBPHI_SHIFT; 51624ca3d19SOleksandr Tymoshenko /* Horizontal front porch */ 51724ca3d19SOleksandr Tymoshenko timing0 |= (panel.panel_hfp & 0xff) << RASTER_TIMING_0_HFP_SHIFT; 51824ca3d19SOleksandr Tymoshenko timing2 |= ((panel.panel_hfp >> 8) & 3) << RASTER_TIMING_2_HFPHI_SHIFT; 51924ca3d19SOleksandr Tymoshenko /* Horizontal sync width */ 52024ca3d19SOleksandr Tymoshenko timing0 |= (panel.panel_hsw & 0x3f) << RASTER_TIMING_0_HSW_SHIFT; 52124ca3d19SOleksandr Tymoshenko timing2 |= ((panel.panel_hsw >> 6) & 0xf) << RASTER_TIMING_2_HSWHI_SHIFT; 52224ca3d19SOleksandr Tymoshenko 52324ca3d19SOleksandr Tymoshenko /* Vertical back porch, front porch, sync width */ 52424ca3d19SOleksandr Tymoshenko timing1 |= (panel.panel_vbp & 0xff) << RASTER_TIMING_1_VBP_SHIFT; 52524ca3d19SOleksandr Tymoshenko timing1 |= (panel.panel_vfp & 0xff) << RASTER_TIMING_1_VFP_SHIFT; 52624ca3d19SOleksandr Tymoshenko timing1 |= (panel.panel_vsw & 0x3f) << RASTER_TIMING_1_VSW_SHIFT; 52724ca3d19SOleksandr Tymoshenko 52824ca3d19SOleksandr Tymoshenko /* Pixels per line */ 52924ca3d19SOleksandr Tymoshenko timing0 |= (((panel.panel_width - 1) >> 10) & 1) 53024ca3d19SOleksandr Tymoshenko << RASTER_TIMING_0_PPLMSB_SHIFT; 53124ca3d19SOleksandr Tymoshenko timing0 |= (((panel.panel_width - 1) >> 4) & 0x3f) 53224ca3d19SOleksandr Tymoshenko << RASTER_TIMING_0_PPLLSB_SHIFT; 53324ca3d19SOleksandr Tymoshenko 53424ca3d19SOleksandr Tymoshenko /* Lines per panel */ 53524ca3d19SOleksandr Tymoshenko timing1 |= ((panel.panel_height - 1) & 0x3ff) 53624ca3d19SOleksandr Tymoshenko << RASTER_TIMING_1_LPP_SHIFT; 53724ca3d19SOleksandr Tymoshenko timing2 |= (((panel.panel_height - 1) >> 10 ) & 1) 53824ca3d19SOleksandr Tymoshenko << RASTER_TIMING_2_LPP_B10_SHIFT; 53924ca3d19SOleksandr Tymoshenko 54024ca3d19SOleksandr Tymoshenko /* clock signal settings */ 54124ca3d19SOleksandr Tymoshenko if (panel.sync_ctrl) 54224ca3d19SOleksandr Tymoshenko timing2 |= RASTER_TIMING_2_PHSVS; 54324ca3d19SOleksandr Tymoshenko if (panel.sync_edge) 54424ca3d19SOleksandr Tymoshenko timing2 |= RASTER_TIMING_2_PHSVS_RISE; 54524ca3d19SOleksandr Tymoshenko else 54624ca3d19SOleksandr Tymoshenko timing2 |= RASTER_TIMING_2_PHSVS_FALL; 54724ca3d19SOleksandr Tymoshenko if (panel.invert_line_clock) 54824ca3d19SOleksandr Tymoshenko timing2 |= RASTER_TIMING_2_IHS; 54924ca3d19SOleksandr Tymoshenko if (panel.invert_frm_clock) 55024ca3d19SOleksandr Tymoshenko timing2 |= RASTER_TIMING_2_IVS; 55124ca3d19SOleksandr Tymoshenko if (panel.panel_invert_pxl_clk) 55224ca3d19SOleksandr Tymoshenko timing2 |= RASTER_TIMING_2_IPC; 55324ca3d19SOleksandr Tymoshenko 55424ca3d19SOleksandr Tymoshenko /* AC bias */ 55524ca3d19SOleksandr Tymoshenko timing2 |= (panel.ac_bias << RASTER_TIMING_2_ACB_SHIFT); 55624ca3d19SOleksandr Tymoshenko timing2 |= (panel.ac_bias_intrpt << RASTER_TIMING_2_ACBI_SHIFT); 55724ca3d19SOleksandr Tymoshenko 55824ca3d19SOleksandr Tymoshenko LCD_WRITE4(sc, LCD_RASTER_TIMING_0, timing0); 55924ca3d19SOleksandr Tymoshenko LCD_WRITE4(sc, LCD_RASTER_TIMING_1, timing1); 56024ca3d19SOleksandr Tymoshenko LCD_WRITE4(sc, LCD_RASTER_TIMING_2, timing2); 56124ca3d19SOleksandr Tymoshenko 56224ca3d19SOleksandr Tymoshenko /* DMA settings */ 56324ca3d19SOleksandr Tymoshenko reg = LCDDMA_CTRL_FB0_FB1; 56424ca3d19SOleksandr Tymoshenko /* Find power of 2 for current burst size */ 56524ca3d19SOleksandr Tymoshenko switch (panel.dma_burst_sz) { 56624ca3d19SOleksandr Tymoshenko case 1: 56724ca3d19SOleksandr Tymoshenko burst_log = 0; 56824ca3d19SOleksandr Tymoshenko break; 56924ca3d19SOleksandr Tymoshenko case 2: 57024ca3d19SOleksandr Tymoshenko burst_log = 1; 57124ca3d19SOleksandr Tymoshenko break; 57224ca3d19SOleksandr Tymoshenko case 4: 57324ca3d19SOleksandr Tymoshenko burst_log = 2; 57424ca3d19SOleksandr Tymoshenko break; 57524ca3d19SOleksandr Tymoshenko case 8: 57624ca3d19SOleksandr Tymoshenko burst_log = 3; 57724ca3d19SOleksandr Tymoshenko break; 57824ca3d19SOleksandr Tymoshenko case 16: 57924ca3d19SOleksandr Tymoshenko default: 58024ca3d19SOleksandr Tymoshenko burst_log = 4; 58124ca3d19SOleksandr Tymoshenko break; 58224ca3d19SOleksandr Tymoshenko } 58324ca3d19SOleksandr Tymoshenko reg |= (burst_log << LCDDMA_CTRL_BURST_SIZE_SHIFT); 58424ca3d19SOleksandr Tymoshenko /* XXX: FIFO TH */ 58524ca3d19SOleksandr Tymoshenko reg |= (0 << LCDDMA_CTRL_TH_FIFO_RDY_SHIFT); 58624ca3d19SOleksandr Tymoshenko LCD_WRITE4(sc, LCD_LCDDMA_CTRL, reg); 58724ca3d19SOleksandr Tymoshenko 58824ca3d19SOleksandr Tymoshenko LCD_WRITE4(sc, LCD_LCDDMA_FB0_BASE, sc->sc_fb_phys); 58924ca3d19SOleksandr Tymoshenko LCD_WRITE4(sc, LCD_LCDDMA_FB0_CEILING, sc->sc_fb_phys + sc->sc_fb_size - 1); 59024ca3d19SOleksandr Tymoshenko LCD_WRITE4(sc, LCD_LCDDMA_FB1_BASE, sc->sc_fb_phys); 59124ca3d19SOleksandr Tymoshenko LCD_WRITE4(sc, LCD_LCDDMA_FB1_CEILING, sc->sc_fb_phys + sc->sc_fb_size - 1); 59224ca3d19SOleksandr Tymoshenko 59324ca3d19SOleksandr Tymoshenko /* Enable LCD */ 59424ca3d19SOleksandr Tymoshenko reg = RASTER_CTRL_LCDTFT; 59524ca3d19SOleksandr Tymoshenko reg |= (panel.fdd << RASTER_CTRL_REQDLY_SHIFT); 59624ca3d19SOleksandr Tymoshenko reg |= (PALETTE_DATA_ONLY << RASTER_CTRL_PALMODE_SHIFT); 59724ca3d19SOleksandr Tymoshenko if (panel.bpp >= 24) 59824ca3d19SOleksandr Tymoshenko reg |= RASTER_CTRL_TFT24; 59924ca3d19SOleksandr Tymoshenko if (panel.bpp == 32) 60024ca3d19SOleksandr Tymoshenko reg |= RASTER_CTRL_TFT24_UNPACKED; 60124ca3d19SOleksandr Tymoshenko LCD_WRITE4(sc, LCD_RASTER_CTRL, reg); 60224ca3d19SOleksandr Tymoshenko 60324ca3d19SOleksandr Tymoshenko LCD_WRITE4(sc, LCD_CLKC_ENABLE, 60424ca3d19SOleksandr Tymoshenko CLKC_ENABLE_DMA | CLKC_ENABLE_LDID | CLKC_ENABLE_CORE); 60524ca3d19SOleksandr Tymoshenko 60624ca3d19SOleksandr Tymoshenko LCD_WRITE4(sc, LCD_CLKC_RESET, CLKC_RESET_MAIN); 60724ca3d19SOleksandr Tymoshenko DELAY(100); 60824ca3d19SOleksandr Tymoshenko LCD_WRITE4(sc, LCD_CLKC_RESET, 0); 60924ca3d19SOleksandr Tymoshenko 61024ca3d19SOleksandr Tymoshenko reg = IRQ_EOF1 | IRQ_EOF0 | IRQ_FUF | IRQ_PL | 61124ca3d19SOleksandr Tymoshenko IRQ_ACB | IRQ_SYNC_LOST | IRQ_RASTER_DONE | 61224ca3d19SOleksandr Tymoshenko IRQ_FRAME_DONE; 61324ca3d19SOleksandr Tymoshenko LCD_WRITE4(sc, LCD_IRQENABLE_SET, reg); 61424ca3d19SOleksandr Tymoshenko 61524ca3d19SOleksandr Tymoshenko reg = LCD_READ4(sc, LCD_RASTER_CTRL); 61624ca3d19SOleksandr Tymoshenko reg |= RASTER_CTRL_LCDEN; 61724ca3d19SOleksandr Tymoshenko LCD_WRITE4(sc, LCD_RASTER_CTRL, reg); 61824ca3d19SOleksandr Tymoshenko 61924ca3d19SOleksandr Tymoshenko LCD_WRITE4(sc, LCD_SYSCONFIG, 62024ca3d19SOleksandr Tymoshenko SYSCONFIG_STANDBY_SMART | SYSCONFIG_IDLE_SMART); 62124ca3d19SOleksandr Tymoshenko 62224ca3d19SOleksandr Tymoshenko /* Init backlight interface */ 62324ca3d19SOleksandr Tymoshenko ctx = device_get_sysctl_ctx(sc->sc_dev); 62424ca3d19SOleksandr Tymoshenko tree = device_get_sysctl_tree(sc->sc_dev); 62524ca3d19SOleksandr Tymoshenko sc->sc_oid = SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 62624ca3d19SOleksandr Tymoshenko "backlight", CTLTYPE_INT | CTLFLAG_RW, sc, 0, 62724ca3d19SOleksandr Tymoshenko am335x_lcd_sysctl_backlight, "I", "LCD backlight"); 62824ca3d19SOleksandr Tymoshenko sc->sc_backlight = 0; 62924ca3d19SOleksandr Tymoshenko /* Check if eCAS interface is available at this point */ 63024ca3d19SOleksandr Tymoshenko if (am335x_pwm_config_ecas(PWM_UNIT, 63124ca3d19SOleksandr Tymoshenko PWM_PERIOD, PWM_PERIOD) == 0) 63224ca3d19SOleksandr Tymoshenko sc->sc_backlight = 100; 63324ca3d19SOleksandr Tymoshenko 63424ca3d19SOleksandr Tymoshenko am335x_lcd_syscons_setup((vm_offset_t)sc->sc_fb_base, sc->sc_fb_phys, &panel); 63524ca3d19SOleksandr Tymoshenko 63624ca3d19SOleksandr Tymoshenko return (0); 63724ca3d19SOleksandr Tymoshenko 63824ca3d19SOleksandr Tymoshenko fail: 63924ca3d19SOleksandr Tymoshenko return (err); 64024ca3d19SOleksandr Tymoshenko } 64124ca3d19SOleksandr Tymoshenko 64224ca3d19SOleksandr Tymoshenko static int 64324ca3d19SOleksandr Tymoshenko am335x_lcd_detach(device_t dev) 64424ca3d19SOleksandr Tymoshenko { 64524ca3d19SOleksandr Tymoshenko /* Do not let unload driver */ 64624ca3d19SOleksandr Tymoshenko return (EBUSY); 64724ca3d19SOleksandr Tymoshenko } 64824ca3d19SOleksandr Tymoshenko 64924ca3d19SOleksandr Tymoshenko static device_method_t am335x_lcd_methods[] = { 65024ca3d19SOleksandr Tymoshenko DEVMETHOD(device_probe, am335x_lcd_probe), 65124ca3d19SOleksandr Tymoshenko DEVMETHOD(device_attach, am335x_lcd_attach), 65224ca3d19SOleksandr Tymoshenko DEVMETHOD(device_detach, am335x_lcd_detach), 65324ca3d19SOleksandr Tymoshenko 65424ca3d19SOleksandr Tymoshenko DEVMETHOD_END 65524ca3d19SOleksandr Tymoshenko }; 65624ca3d19SOleksandr Tymoshenko 65724ca3d19SOleksandr Tymoshenko static driver_t am335x_lcd_driver = { 65824ca3d19SOleksandr Tymoshenko "am335x_lcd", 65924ca3d19SOleksandr Tymoshenko am335x_lcd_methods, 66024ca3d19SOleksandr Tymoshenko sizeof(struct am335x_lcd_softc), 66124ca3d19SOleksandr Tymoshenko }; 66224ca3d19SOleksandr Tymoshenko 66324ca3d19SOleksandr Tymoshenko static devclass_t am335x_lcd_devclass; 66424ca3d19SOleksandr Tymoshenko 66524ca3d19SOleksandr Tymoshenko DRIVER_MODULE(am335x_lcd, simplebus, am335x_lcd_driver, am335x_lcd_devclass, 0, 0); 66624ca3d19SOleksandr Tymoshenko MODULE_VERSION(am335x_lcd, 1); 66724ca3d19SOleksandr Tymoshenko MODULE_DEPEND(am335x_lcd, simplebus, 1, 1, 1); 668