Author: gonzo
Date: Mon May 27 00:23:01 2013
New Revision: 251018
URL: http://svnweb.freebsd.org/changeset/base/251018
Log:
AM335x LCD controller driver with syscons support
Limitations:
- Raster mode only
- 24 and 32 bpp only
Added:
head/sys/arm/ti/am335x/am335x_lcd.c (contents, props changed)
head/sys/arm/ti/am335x/am335x_lcd.h (contents, props changed)
head/sys/arm/ti/am335x/am335x_lcd_syscons.c (contents, props changed)
Modified:
head/sys/arm/ti/am335x/files.am335x
Added: head/sys/arm/ti/am335x/am335x_lcd.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/arm/ti/am335x/am335x_lcd.c Mon May 27 00:23:01 2013
(r251018)
@@ -0,0 +1,667 @@
+/*-
+ * Copyright 2013 Oleksandr Tymoshenko <go...@freebsd.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/clock.h>
+#include <sys/time.h>
+#include <sys/bus.h>
+#include <sys/lock.h>
+#include <sys/mutex.h>
+#include <sys/resource.h>
+#include <sys/rman.h>
+#include <sys/sysctl.h>
+#include <vm/vm.h>
+#include <vm/pmap.h>
+
+#include <machine/bus.h>
+
+#include <dev/fdt/fdt_common.h>
+#include <dev/ofw/openfirm.h>
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+#include <arm/ti/ti_prcm.h>
+#include <arm/ti/ti_scm.h>
+
+#include "am335x_lcd.h"
+#include "am335x_pwm.h"
+
+#define LCD_PID 0x00
+#define LCD_CTRL 0x04
+#define CTRL_DIV_MASK 0xff
+#define CTRL_DIV_SHIFT 8
+#define CTRL_AUTO_UFLOW_RESTART (1 << 1)
+#define CTRL_RASTER_MODE 1
+#define CTRL_LIDD_MODE 0
+#define LCD_LIDD_CTRL 0x0C
+#define LCD_LIDD_CS0_CONF 0x10
+#define LCD_LIDD_CS0_ADDR 0x14
+#define LCD_LIDD_CS0_DATA 0x18
+#define LCD_LIDD_CS1_CONF 0x1C
+#define LCD_LIDD_CS1_ADDR 0x20
+#define LCD_LIDD_CS1_DATA 0x24
+#define LCD_RASTER_CTRL 0x28
+#define RASTER_CTRL_TFT24_UNPACKED (1 << 26)
+#define RASTER_CTRL_TFT24 (1 << 25)
+#define RASTER_CTRL_STN565 (1 << 24)
+#define RASTER_CTRL_TFTPMAP (1 << 23)
+#define RASTER_CTRL_NIBMODE (1 << 22)
+#define RASTER_CTRL_PALMODE_SHIFT 20
+#define PALETTE_PALETTE_AND_DATA 0x00
+#define PALETTE_PALETTE_ONLY 0x01
+#define PALETTE_DATA_ONLY 0x02
+#define RASTER_CTRL_REQDLY_SHIFT 12
+#define RASTER_CTRL_MONO8B (1 << 9)
+#define RASTER_CTRL_RBORDER (1 << 8)
+#define RASTER_CTRL_LCDTFT (1 << 7)
+#define RASTER_CTRL_LCDBW (1 << 1)
+#define RASTER_CTRL_LCDEN (1 << 0)
+#define LCD_RASTER_TIMING_0 0x2C
+#define RASTER_TIMING_0_HBP_SHIFT 24
+#define RASTER_TIMING_0_HFP_SHIFT 16
+#define RASTER_TIMING_0_HSW_SHIFT 10
+#define RASTER_TIMING_0_PPLLSB_SHIFT 4
+#define RASTER_TIMING_0_PPLMSB_SHIFT 3
+#define LCD_RASTER_TIMING_1 0x30
+#define RASTER_TIMING_1_VBP_SHIFT 24
+#define RASTER_TIMING_1_VFP_SHIFT 16
+#define RASTER_TIMING_1_VSW_SHIFT 10
+#define RASTER_TIMING_1_LPP_SHIFT 0
+#define LCD_RASTER_TIMING_2 0x34
+#define RASTER_TIMING_2_HSWHI_SHIFT 27
+#define RASTER_TIMING_2_LPP_B10_SHIFT 26
+#define RASTER_TIMING_2_PHSVS (1 << 25)
+#define RASTER_TIMING_2_PHSVS_RISE (1 << 24)
+#define RASTER_TIMING_2_PHSVS_FALL (0 << 24)
+#define RASTER_TIMING_2_IOE (1 << 23)
+#define RASTER_TIMING_2_IPC (1 << 22)
+#define RASTER_TIMING_2_IHS (1 << 21)
+#define RASTER_TIMING_2_IVS (1 << 20)
+#define RASTER_TIMING_2_ACBI_SHIFT 16
+#define RASTER_TIMING_2_ACB_SHIFT 8
+#define RASTER_TIMING_2_HBPHI_SHIFT 4
+#define RASTER_TIMING_2_HFPHI_SHIFT 0
+#define LCD_RASTER_SUBPANEL 0x38
+#define LCD_RASTER_SUBPANEL2 0x3C
+#define LCD_LCDDMA_CTRL 0x40
+#define LCDDMA_CTRL_DMA_MASTER_PRIO_SHIFT 16
+#define LCDDMA_CTRL_TH_FIFO_RDY_SHIFT 8
+#define LCDDMA_CTRL_BURST_SIZE_SHIFT 4
+#define LCDDMA_CTRL_BYTES_SWAP (1 << 3)
+#define LCDDMA_CTRL_BE (1 << 1)
+#define LCDDMA_CTRL_FB0_ONLY 0
+#define LCDDMA_CTRL_FB0_FB1 (1 << 0)
+#define LCD_LCDDMA_FB0_BASE 0x44
+#define LCD_LCDDMA_FB0_CEILING 0x48
+#define LCD_LCDDMA_FB1_BASE 0x4C
+#define LCD_LCDDMA_FB1_CEILING 0x50
+#define LCD_SYSCONFIG 0x54
+#define SYSCONFIG_STANDBY_FORCE (0 << 4)
+#define SYSCONFIG_STANDBY_NONE (1 << 4)
+#define SYSCONFIG_STANDBY_SMART (2 << 4)
+#define SYSCONFIG_IDLE_FORCE (0 << 2)
+#define SYSCONFIG_IDLE_NONE (1 << 2)
+#define SYSCONFIG_IDLE_SMART (2 << 2)
+#define LCD_IRQSTATUS_RAW 0x58
+#define LCD_IRQSTATUS 0x5C
+#define LCD_IRQENABLE_SET 0x60
+#define LCD_IRQENABLE_CLEAR 0x64
+#define IRQ_EOF1 (1 << 9)
+#define IRQ_EOF0 (1 << 8)
+#define IRQ_PL (1 << 6)
+#define IRQ_FUF (1 << 5)
+#define IRQ_ACB (1 << 3)
+#define IRQ_SYNC_LOST (1 << 2)
+#define IRQ_RASTER_DONE (1 << 1)
+#define IRQ_FRAME_DONE (1 << 0)
+#define LCD_CLKC_ENABLE 0x6C
+#define CLKC_ENABLE_DMA (1 << 2)
+#define CLKC_ENABLE_LDID (1 << 1)
+#define CLKC_ENABLE_CORE (1 << 0)
+#define LCD_CLKC_RESET 0x70
+#define CLKC_RESET_MAIN (1 << 3)
+#define CLKC_RESET_DMA (1 << 2)
+#define CLKC_RESET_LDID (1 << 1)
+#define CLKC_RESET_CORE (1 << 0)
+
+#define LCD_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx)
+#define LCD_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx)
+#define LCD_LOCK_INIT(_sc) mtx_init(&(_sc)->sc_mtx, \
+ device_get_nameunit(_sc->sc_dev), "am335x_lcd", MTX_DEF)
+#define LCD_LOCK_DESTROY(_sc) mtx_destroy(&(_sc)->sc_mtx);
+
+#define LCD_READ4(_sc, reg) bus_read_4((_sc)->sc_mem_res, reg);
+#define LCD_WRITE4(_sc, reg, value) \
+ bus_write_4((_sc)->sc_mem_res, reg, value);
+
+
+/* Backlight is controlled by eCAS interface on PWM unit 0 */
+#define PWM_UNIT 0
+#define PWM_PERIOD 100
+
+struct am335x_lcd_softc {
+ device_t sc_dev;
+ struct resource *sc_mem_res;
+ struct resource *sc_irq_res;
+ void *sc_intr_hl;
+ struct mtx sc_mtx;
+ int sc_backlight;
+ struct sysctl_oid *sc_oid;
+
+ /* Framebuffer */
+ bus_dma_tag_t sc_dma_tag;
+ bus_dmamap_t sc_dma_map;
+ size_t sc_fb_size;
+ bus_addr_t sc_fb_phys;
+ uint8_t *sc_fb_base;
+};
+
+static void
+am335x_fb_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int err)
+{
+ bus_addr_t *addr;
+
+ if (err)
+ return;
+
+ addr = (bus_addr_t*)arg;
+ *addr = segs[0].ds_addr;
+}
+
+static uint32_t
+am335x_lcd_calc_divisor(uint32_t reference, uint32_t freq)
+{
+ uint32_t div;
+ /* Raster mode case: divisors are in range from 2 to 255 */
+ for (div = 2; div < 255; div++)
+ if (reference/div <= freq)
+ return (div);
+
+ return (255);
+}
+
+static int
+am335x_lcd_sysctl_backlight(SYSCTL_HANDLER_ARGS)
+{
+ struct am335x_lcd_softc *sc = (struct am335x_lcd_softc*)arg1;
+ int error;
+ int backlight;
+
+ backlight = sc->sc_backlight;;
+ error = sysctl_handle_int(oidp, &backlight, 0, req);
+
+ if (error != 0 || req->newptr == NULL)
+ return (error);
+
+ if (backlight < 0)
+ backlight = 0;
+ if (backlight > 100)
+ backlight = 100;
+
+ LCD_LOCK(sc);
+ error = am335x_pwm_config_ecas(PWM_UNIT, PWM_PERIOD,
+ backlight*PWM_PERIOD/100);
+ if (error == 0)
+ sc->sc_backlight = backlight;
+ LCD_UNLOCK(sc);
+
+ return (error);
+}
+
+static int
+am335x_read_panel_property(device_t dev, const char *name, uint32_t *val)
+{
+ phandle_t node;
+ pcell_t cell;
+
+ node = ofw_bus_get_node(dev);
+ if ((OF_getprop(node, name, &cell, sizeof(cell))) <= 0) {
+ device_printf(dev, "missing '%s' attribute in LCD panel info\n",
+ name);
+ return (ENXIO);
+ }
+
+ *val = fdt32_to_cpu(cell);
+
+ return (0);
+}
+
+static int
+am335x_read_panel_info(device_t dev, struct panel_info *panel)
+{
+ int error;
+
+ error = 0;
+ if ((error = am335x_read_panel_property(dev,
+ "panel_width", &panel->panel_width)))
+ goto out;
+
+ if ((error = am335x_read_panel_property(dev,
+ "panel_height", &panel->panel_height)))
+ goto out;
+
+ if ((error = am335x_read_panel_property(dev,
+ "panel_hfp", &panel->panel_hfp)))
+ goto out;
+
+ if ((error = am335x_read_panel_property(dev,
+ "panel_hbp", &panel->panel_hbp)))
+ goto out;
+
+ if ((error = am335x_read_panel_property(dev,
+ "panel_hsw", &panel->panel_hsw)))
+ goto out;
+
+ if ((error = am335x_read_panel_property(dev,
+ "panel_vfp", &panel->panel_vfp)))
+ goto out;
+
+ if ((error = am335x_read_panel_property(dev,
+ "panel_vbp", &panel->panel_vbp)))
+ goto out;
+
+ if ((error = am335x_read_panel_property(dev,
+ "panel_vsw", &panel->panel_vsw)))
+ goto out;
+
+ if ((error = am335x_read_panel_property(dev,
+ "panel_pxl_clk", &panel->panel_pxl_clk)))
+ goto out;
+
+ if ((error = am335x_read_panel_property(dev,
+ "panel_invert_pxl_clk", &panel->panel_invert_pxl_clk)))
+ goto out;
+
+ if ((error = am335x_read_panel_property(dev,
+ "ac_bias", &panel->ac_bias)))
+ goto out;
+
+ if ((error = am335x_read_panel_property(dev,
+ "ac_bias_intrpt", &panel->ac_bias_intrpt)))
+ goto out;
+
+ if ((error = am335x_read_panel_property(dev,
+ "dma_burst_sz", &panel->dma_burst_sz)))
+ goto out;
+
+ if ((error = am335x_read_panel_property(dev,
+ "bpp", &panel->bpp)))
+ goto out;
+
+ if ((error = am335x_read_panel_property(dev,
+ "fdd", &panel->fdd)))
+ goto out;
+
+ if ((error = am335x_read_panel_property(dev,
+ "invert_line_clock", &panel->invert_line_clock)))
+ goto out;
+
+ if ((error = am335x_read_panel_property(dev,
+ "invert_frm_clock", &panel->invert_frm_clock)))
+ goto out;
+
+ if ((error = am335x_read_panel_property(dev,
+ "sync_edge", &panel->sync_edge)))
+ goto out;
+
+ error = am335x_read_panel_property(dev,
+ "sync_ctrl", &panel->sync_ctrl);
+
+out:
+ return (error);
+}
+
+static void
+am335x_lcd_intr(void *arg)
+{
+ struct am335x_lcd_softc *sc = arg;
+ uint32_t reg;
+
+ reg = LCD_READ4(sc, LCD_IRQSTATUS);
+ LCD_WRITE4(sc, LCD_IRQSTATUS, reg);
+
+ if (reg & IRQ_SYNC_LOST) {
+ reg = LCD_READ4(sc, LCD_RASTER_CTRL);
+ reg &= ~RASTER_CTRL_LCDEN;
+ LCD_WRITE4(sc, LCD_RASTER_CTRL, reg);
+
+ reg = LCD_READ4(sc, LCD_RASTER_CTRL);
+ reg |= RASTER_CTRL_LCDEN;
+ LCD_WRITE4(sc, LCD_RASTER_CTRL, reg);
+ return;
+ }
+
+ if (reg & IRQ_PL) {
+ reg = LCD_READ4(sc, LCD_RASTER_CTRL);
+ reg &= ~RASTER_CTRL_LCDEN;
+ LCD_WRITE4(sc, LCD_RASTER_CTRL, reg);
+
+ reg = LCD_READ4(sc, LCD_RASTER_CTRL);
+ reg |= RASTER_CTRL_LCDEN;
+ LCD_WRITE4(sc, LCD_RASTER_CTRL, reg);
+ return;
+ }
+
+ if (reg & IRQ_EOF0) {
+ LCD_WRITE4(sc, LCD_LCDDMA_FB0_BASE, sc->sc_fb_phys);
+ LCD_WRITE4(sc, LCD_LCDDMA_FB0_CEILING, sc->sc_fb_phys +
sc->sc_fb_size - 1);
+ reg &= ~IRQ_EOF0;
+ }
+
+ if (reg & IRQ_EOF1) {
+ LCD_WRITE4(sc, LCD_LCDDMA_FB1_BASE, sc->sc_fb_phys);
+ LCD_WRITE4(sc, LCD_LCDDMA_FB1_CEILING, sc->sc_fb_phys +
sc->sc_fb_size - 1);
+ reg &= ~IRQ_EOF1;
+ }
+
+ if (reg & IRQ_FUF) {
+ /* TODO: Handle FUF */
+ }
+
+ if (reg & IRQ_ACB) {
+ /* TODO: Handle ACB */
+ }
+}
+
+static int
+am335x_lcd_probe(device_t dev)
+{
+ if (!ofw_bus_is_compatible(dev, "ti,am335x-lcd"))
+ return (ENXIO);
+
+ device_set_desc(dev, "AM335x LCD controller");
+
+ return (0);
+}
+
+static int
+am335x_lcd_attach(device_t dev)
+{
+ struct am335x_lcd_softc *sc;
+ int rid;
+ int div;
+ struct panel_info panel;
+ uint32_t reg, timing0, timing1, timing2;
+ struct sysctl_ctx_list *ctx;
+ struct sysctl_oid *tree;
+ uint32_t burst_log;
+ int err;
+ size_t dma_size;
+
+ sc = device_get_softc(dev);
+ sc->sc_dev = dev;
+
+ if (am335x_read_panel_info(dev, &panel))
+ return (ENXIO);
+
+ int ref_freq = 0;
+ ti_prcm_clk_enable(LCDC_CLK);
+ if (ti_prcm_clk_get_source_freq(LCDC_CLK, &ref_freq)) {
+ device_printf(dev, "Can't get reference frequency\n");
+ return (ENXIO);
+ }
+
+ rid = 0;
+ sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
+ RF_ACTIVE);
+ if (!sc->sc_mem_res) {
+ device_printf(dev, "cannot allocate memory window\n");
+ return (ENXIO);
+ }
+
+ rid = 0;
+ sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
+ RF_ACTIVE);
+ if (!sc->sc_irq_res) {
+ bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->sc_mem_res);
+ device_printf(dev, "cannot allocate interrupt\n");
+ return (ENXIO);
+ }
+
+ if (bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_MISC | INTR_MPSAFE,
+ NULL, am335x_lcd_intr, sc,
+ &sc->sc_intr_hl) != 0) {
+ bus_release_resource(dev, SYS_RES_IRQ, rid,
+ sc->sc_irq_res);
+ bus_release_resource(dev, SYS_RES_MEMORY, rid,
+ sc->sc_mem_res);
+ device_printf(dev, "Unable to setup the irq handler.\n");
+ return (ENXIO);
+ }
+
+ LCD_LOCK_INIT(sc);
+
+ /* Panle initialization */
+ dma_size = round_page(panel.panel_width*panel.panel_height*panel.bpp/8);
+
+ /*
+ * Now allocate framebuffer memory
+ */
+ err = bus_dma_tag_create(
+ bus_get_dma_tag(dev),
+ 4, 0, /* alignment, boundary */
+ BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
+ BUS_SPACE_MAXADDR, /* highaddr */
+ NULL, NULL, /* filter, filterarg */
+ dma_size, 1, /* maxsize, nsegments */
+ dma_size, 0, /* maxsegsize, flags */
+ NULL, NULL, /* lockfunc, lockarg */
+ &sc->sc_dma_tag);
+ if (err)
+ goto fail;
+
+ err = bus_dmamem_alloc(sc->sc_dma_tag, (void **)&sc->sc_fb_base,
+ 0, &sc->sc_dma_map);
+
+ if (err) {
+ device_printf(dev, "cannot allocate framebuffer\n");
+ goto fail;
+ }
+
+ err = bus_dmamap_load(sc->sc_dma_tag, sc->sc_dma_map, sc->sc_fb_base,
+ dma_size, am335x_fb_dmamap_cb, &sc->sc_fb_phys, BUS_DMA_NOWAIT);
+
+ if (err) {
+ device_printf(dev, "cannot load DMA map\n");
+ goto fail;
+ }
+
+ /* Make sure it's blank */
+ memset(sc->sc_fb_base, 0x00, dma_size);
+
+ /* Calculate actual FB Size */
+ sc->sc_fb_size = panel.panel_width*panel.panel_height*panel.bpp/8;
+
+ /* Only raster mode is supported */
+ reg = CTRL_RASTER_MODE;
+ div = am335x_lcd_calc_divisor(ref_freq, panel.panel_pxl_clk);
+ reg |= (div << CTRL_DIV_SHIFT);
+ LCD_WRITE4(sc, LCD_CTRL, reg);
+
+ /* Set timing */
+ timing0 = timing1 = timing2 = 0;
+
+ /* Horizontal back porch */
+ timing0 |= (panel.panel_hbp & 0xff) << RASTER_TIMING_0_HBP_SHIFT;
+ timing2 |= ((panel.panel_hbp >> 8) & 3) << RASTER_TIMING_2_HBPHI_SHIFT;
+ /* Horizontal front porch */
+ timing0 |= (panel.panel_hfp & 0xff) << RASTER_TIMING_0_HFP_SHIFT;
+ timing2 |= ((panel.panel_hfp >> 8) & 3) << RASTER_TIMING_2_HFPHI_SHIFT;
+ /* Horizontal sync width */
+ timing0 |= (panel.panel_hsw & 0x3f) << RASTER_TIMING_0_HSW_SHIFT;
+ timing2 |= ((panel.panel_hsw >> 6) & 0xf) <<
RASTER_TIMING_2_HSWHI_SHIFT;
+
+ /* Vertical back porch, front porch, sync width */
+ timing1 |= (panel.panel_vbp & 0xff) << RASTER_TIMING_1_VBP_SHIFT;
+ timing1 |= (panel.panel_vfp & 0xff) << RASTER_TIMING_1_VFP_SHIFT;
+ timing1 |= (panel.panel_vsw & 0x3f) << RASTER_TIMING_1_VSW_SHIFT;
+
+ /* Pixels per line */
+ timing0 |= (((panel.panel_width - 1) >> 10) & 1)
+ << RASTER_TIMING_0_PPLMSB_SHIFT;
+ timing0 |= (((panel.panel_width - 1) >> 4) & 0x3f)
+ << RASTER_TIMING_0_PPLLSB_SHIFT;
+
+ /* Lines per panel */
+ timing1 |= ((panel.panel_height - 1) & 0x3ff)
+ << RASTER_TIMING_1_LPP_SHIFT;
+ timing2 |= (((panel.panel_height - 1) >> 10 ) & 1)
+ << RASTER_TIMING_2_LPP_B10_SHIFT;
+
+ /* clock signal settings */
+ if (panel.sync_ctrl)
+ timing2 |= RASTER_TIMING_2_PHSVS;
+ if (panel.sync_edge)
+ timing2 |= RASTER_TIMING_2_PHSVS_RISE;
+ else
+ timing2 |= RASTER_TIMING_2_PHSVS_FALL;
+ if (panel.invert_line_clock)
+ timing2 |= RASTER_TIMING_2_IHS;
+ if (panel.invert_frm_clock)
+ timing2 |= RASTER_TIMING_2_IVS;
+ if (panel.panel_invert_pxl_clk)
+ timing2 |= RASTER_TIMING_2_IPC;
+
+ /* AC bias */
+ timing2 |= (panel.ac_bias << RASTER_TIMING_2_ACB_SHIFT);
+ timing2 |= (panel.ac_bias_intrpt << RASTER_TIMING_2_ACBI_SHIFT);
+
+ LCD_WRITE4(sc, LCD_RASTER_TIMING_0, timing0);
+ LCD_WRITE4(sc, LCD_RASTER_TIMING_1, timing1);
+ LCD_WRITE4(sc, LCD_RASTER_TIMING_2, timing2);
+
+ /* DMA settings */
+ reg = LCDDMA_CTRL_FB0_FB1;
+ /* Find power of 2 for current burst size */
+ switch (panel.dma_burst_sz) {
+ case 1:
+ burst_log = 0;
+ break;
+ case 2:
+ burst_log = 1;
+ break;
+ case 4:
+ burst_log = 2;
+ break;
+ case 8:
+ burst_log = 3;
+ break;
+ case 16:
+ default:
+ burst_log = 4;
+ break;
+ }
+ reg |= (burst_log << LCDDMA_CTRL_BURST_SIZE_SHIFT);
+ /* XXX: FIFO TH */
+ reg |= (0 << LCDDMA_CTRL_TH_FIFO_RDY_SHIFT);
+ LCD_WRITE4(sc, LCD_LCDDMA_CTRL, reg);
+
+ LCD_WRITE4(sc, LCD_LCDDMA_FB0_BASE, sc->sc_fb_phys);
+ LCD_WRITE4(sc, LCD_LCDDMA_FB0_CEILING, sc->sc_fb_phys + sc->sc_fb_size
- 1);
+ LCD_WRITE4(sc, LCD_LCDDMA_FB1_BASE, sc->sc_fb_phys);
+ LCD_WRITE4(sc, LCD_LCDDMA_FB1_CEILING, sc->sc_fb_phys + sc->sc_fb_size
- 1);
+
+ /* Enable LCD */
+ reg = RASTER_CTRL_LCDTFT;
+ reg |= (panel.fdd << RASTER_CTRL_REQDLY_SHIFT);
+ reg |= (PALETTE_DATA_ONLY << RASTER_CTRL_PALMODE_SHIFT);
+ if (panel.bpp >= 24)
+ reg |= RASTER_CTRL_TFT24;
+ if (panel.bpp == 32)
+ reg |= RASTER_CTRL_TFT24_UNPACKED;
+ LCD_WRITE4(sc, LCD_RASTER_CTRL, reg);
+
+ LCD_WRITE4(sc, LCD_CLKC_ENABLE,
+ CLKC_ENABLE_DMA | CLKC_ENABLE_LDID | CLKC_ENABLE_CORE);
+
+ LCD_WRITE4(sc, LCD_CLKC_RESET, CLKC_RESET_MAIN);
+ DELAY(100);
+ LCD_WRITE4(sc, LCD_CLKC_RESET, 0);
+
+ reg = IRQ_EOF1 | IRQ_EOF0 | IRQ_FUF | IRQ_PL |
+ IRQ_ACB | IRQ_SYNC_LOST | IRQ_RASTER_DONE |
+ IRQ_FRAME_DONE;
+ LCD_WRITE4(sc, LCD_IRQENABLE_SET, reg);
+
+ reg = LCD_READ4(sc, LCD_RASTER_CTRL);
+ reg |= RASTER_CTRL_LCDEN;
+ LCD_WRITE4(sc, LCD_RASTER_CTRL, reg);
+
+ LCD_WRITE4(sc, LCD_SYSCONFIG,
+ SYSCONFIG_STANDBY_SMART | SYSCONFIG_IDLE_SMART);
+
+ /* Init backlight interface */
+ ctx = device_get_sysctl_ctx(sc->sc_dev);
+ tree = device_get_sysctl_tree(sc->sc_dev);
+ sc->sc_oid = SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
+ "backlight", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
+ am335x_lcd_sysctl_backlight, "I", "LCD backlight");
+ sc->sc_backlight = 0;
+ /* Check if eCAS interface is available at this point */
+ if (am335x_pwm_config_ecas(PWM_UNIT,
+ PWM_PERIOD, PWM_PERIOD) == 0)
+ sc->sc_backlight = 100;
+
+ am335x_lcd_syscons_setup((vm_offset_t)sc->sc_fb_base, sc->sc_fb_phys,
&panel);
+
+ return (0);
+
+fail:
+ return (err);
+}
+
+static int
+am335x_lcd_detach(device_t dev)
+{
+ /* Do not let unload driver */
+ return (EBUSY);
+}
+
+static device_method_t am335x_lcd_methods[] = {
+ DEVMETHOD(device_probe, am335x_lcd_probe),
+ DEVMETHOD(device_attach, am335x_lcd_attach),
+ DEVMETHOD(device_detach, am335x_lcd_detach),
+
+ DEVMETHOD_END
+};
+
+static driver_t am335x_lcd_driver = {
+ "am335x_lcd",
+ am335x_lcd_methods,
+ sizeof(struct am335x_lcd_softc),
+};
+
+static devclass_t am335x_lcd_devclass;
+
+DRIVER_MODULE(am335x_lcd, simplebus, am335x_lcd_driver, am335x_lcd_devclass,
0, 0);
+MODULE_VERSION(am335x_lcd, 1);
+MODULE_DEPEND(am335x_lcd, simplebus, 1, 1, 1);
Added: head/sys/arm/ti/am335x/am335x_lcd.h
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/arm/ti/am335x/am335x_lcd.h Mon May 27 00:23:01 2013
(r251018)
@@ -0,0 +1,56 @@
+/*-
+ * Copyright (c) 2013 Oleksandr Tymoshenko <go...@freebsd.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+#ifndef __AM335X_LCD_H__
+#define __AM335X_LCD_H__
+
+struct panel_info {
+ uint32_t panel_width;
+ uint32_t panel_height;
+ uint32_t panel_hfp;
+ uint32_t panel_hbp;
+ uint32_t panel_hsw;
+ uint32_t panel_vfp;
+ uint32_t panel_vbp;
+ uint32_t panel_vsw;
+ uint32_t ac_bias;
+ uint32_t ac_bias_intrpt;
+ uint32_t dma_burst_sz;
+ uint32_t bpp;
+ uint32_t fdd;
+ uint32_t invert_line_clock;
+ uint32_t invert_frm_clock;
+ uint32_t sync_edge;
+ uint32_t sync_ctrl;
+ uint32_t panel_pxl_clk;
+ uint32_t panel_invert_pxl_clk;
+};
+
+int am335x_lcd_syscons_setup(vm_offset_t vaddr, vm_paddr_t paddr,
+ struct panel_info *panel);
+
+#endif /* __AM335X_LCD_H__ */
Added: head/sys/arm/ti/am335x/am335x_lcd_syscons.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/arm/ti/am335x/am335x_lcd_syscons.c Mon May 27 00:23:01 2013
(r251018)
@@ -0,0 +1,793 @@
+/*-
+ * Copyright (c) 2013 Oleksandr Tymoshenko <go...@freebsd.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/conf.h>
+#include <sys/endian.h>
+#include <sys/kernel.h>
+#include <sys/lock.h>
+#include <sys/malloc.h>
+#include <sys/module.h>
+#include <sys/mutex.h>
+#include <sys/resource.h>
+#include <sys/rman.h>
+#include <sys/fbio.h>
+#include <sys/consio.h>
+
+#include <sys/kdb.h>
+
+#include <machine/bus.h>
+#include <machine/cpu.h>
+#include <machine/cpufunc.h>
+#include <machine/resource.h>
+#include <machine/frame.h>
+#include <machine/intr.h>
+
+#include <dev/fdt/fdt_common.h>
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+#include <dev/fb/fbreg.h>
+#include <dev/syscons/syscons.h>
+
+#include "am335x_lcd.h"
+
+struct video_adapter_softc {
+ /* Videoadpater part */
+ video_adapter_t va;
+ int console;
+
+ intptr_t fb_addr;
+ intptr_t fb_paddr;
+ unsigned int fb_size;
+
+ unsigned int height;
+ unsigned int width;
+ unsigned int depth;
+ unsigned int stride;
+
+ unsigned int xmargin;
+ unsigned int ymargin;
+
+ unsigned char *font;
+ int initialized;
+};
+
+struct argb {
+ uint8_t a;
+ uint8_t r;
+ uint8_t g;
+ uint8_t b;
+};
+
+static struct argb am335x_syscons_palette[16] = {
+ {0x00, 0x00, 0x00, 0x00},
+ {0x00, 0x00, 0x00, 0xaa},
+ {0x00, 0x00, 0xaa, 0x00},
+ {0x00, 0x00, 0xaa, 0xaa},
+ {0x00, 0xaa, 0x00, 0x00},
+ {0x00, 0xaa, 0x00, 0xaa},
+ {0x00, 0xaa, 0x55, 0x00},
+ {0x00, 0xaa, 0xaa, 0xaa},
+ {0x00, 0x55, 0x55, 0x55},
+ {0x00, 0x55, 0x55, 0xff},
+ {0x00, 0x55, 0xff, 0x55},
+ {0x00, 0x55, 0xff, 0xff},
+ {0x00, 0xff, 0x55, 0x55},
+ {0x00, 0xff, 0x55, 0xff},
+ {0x00, 0xff, 0xff, 0x55},
+ {0x00, 0xff, 0xff, 0xff}
+};
+
+/* mouse pointer from dev/syscons/scgfbrndr.c */
+static u_char mouse_pointer[16] = {
+ 0x00, 0x40, 0x60, 0x70, 0x78, 0x7c, 0x7e, 0x68,
+ 0x0c, 0x0c, 0x06, 0x06, 0x00, 0x00, 0x00, 0x00
+};
+
+#define AM335X_FONT_HEIGHT 16
+
+#define FB_WIDTH 640
+#define FB_HEIGHT 480
+#define FB_DEPTH 24
+
+static struct video_adapter_softc va_softc;
+
+static int am335x_syscons_configure(int flags);
+
+/*
+ * Video driver routines and glue.
+ */
+static vi_probe_t am335x_syscons_probe;
+static vi_init_t am335x_syscons_init;
+static vi_get_info_t am335x_syscons_get_info;
+static vi_query_mode_t am335x_syscons_query_mode;
+static vi_set_mode_t am335x_syscons_set_mode;
+static vi_save_font_t am335x_syscons_save_font;
+static vi_load_font_t am335x_syscons_load_font;
+static vi_show_font_t am335x_syscons_show_font;
+static vi_save_palette_t am335x_syscons_save_palette;
+static vi_load_palette_t am335x_syscons_load_palette;
+static vi_set_border_t am335x_syscons_set_border;
+static vi_save_state_t am335x_syscons_save_state;
+static vi_load_state_t am335x_syscons_load_state;
+static vi_set_win_org_t am335x_syscons_set_win_org;
+static vi_read_hw_cursor_t am335x_syscons_read_hw_cursor;
+static vi_set_hw_cursor_t am335x_syscons_set_hw_cursor;
+static vi_set_hw_cursor_shape_t am335x_syscons_set_hw_cursor_shape;
+static vi_blank_display_t am335x_syscons_blank_display;
+static vi_mmap_t am335x_syscons_mmap;
+static vi_ioctl_t am335x_syscons_ioctl;
+static vi_clear_t am335x_syscons_clear;
+static vi_fill_rect_t am335x_syscons_fill_rect;
+static vi_bitblt_t am335x_syscons_bitblt;
+static vi_diag_t am335x_syscons_diag;
+static vi_save_cursor_palette_t am335x_syscons_save_cursor_palette;
+static vi_load_cursor_palette_t am335x_syscons_load_cursor_palette;
+static vi_copy_t am335x_syscons_copy;
+static vi_putp_t am335x_syscons_putp;
+static vi_putc_t am335x_syscons_putc;
+static vi_puts_t am335x_syscons_puts;
+static vi_putm_t am335x_syscons_putm;
+
+static video_switch_t am335x_sysconsvidsw = {
+ .probe = am335x_syscons_probe,
+ .init = am335x_syscons_init,
+ .get_info = am335x_syscons_get_info,
+ .query_mode = am335x_syscons_query_mode,
+ .set_mode = am335x_syscons_set_mode,
+ .save_font = am335x_syscons_save_font,
+ .load_font = am335x_syscons_load_font,
+ .show_font = am335x_syscons_show_font,
+ .save_palette = am335x_syscons_save_palette,
+ .load_palette = am335x_syscons_load_palette,
+ .set_border = am335x_syscons_set_border,
+ .save_state = am335x_syscons_save_state,
+ .load_state = am335x_syscons_load_state,
+ .set_win_org = am335x_syscons_set_win_org,
+ .read_hw_cursor = am335x_syscons_read_hw_cursor,
+ .set_hw_cursor = am335x_syscons_set_hw_cursor,
+ .set_hw_cursor_shape = am335x_syscons_set_hw_cursor_shape,
+ .blank_display = am335x_syscons_blank_display,
+ .mmap = am335x_syscons_mmap,
+ .ioctl = am335x_syscons_ioctl,
+ .clear = am335x_syscons_clear,
+ .fill_rect = am335x_syscons_fill_rect,
+ .bitblt = am335x_syscons_bitblt,
+ .diag = am335x_syscons_diag,
+ .save_cursor_palette = am335x_syscons_save_cursor_palette,
+ .load_cursor_palette = am335x_syscons_load_cursor_palette,
+ .copy = am335x_syscons_copy,
+ .putp = am335x_syscons_putp,
+ .putc = am335x_syscons_putc,
+ .puts = am335x_syscons_puts,
+ .putm = am335x_syscons_putm,
+};
+
+VIDEO_DRIVER(am335x_syscons, am335x_sysconsvidsw, am335x_syscons_configure);
+
+static vr_init_t am335x_rend_init;
+static vr_clear_t am335x_rend_clear;
+static vr_draw_border_t am335x_rend_draw_border;
+static vr_draw_t am335x_rend_draw;
+static vr_set_cursor_t am335x_rend_set_cursor;
+static vr_draw_cursor_t am335x_rend_draw_cursor;
+static vr_blink_cursor_t am335x_rend_blink_cursor;
+static vr_set_mouse_t am335x_rend_set_mouse;
+static vr_draw_mouse_t am335x_rend_draw_mouse;
+
+/*
+ * We use our own renderer; this is because we must emulate a hardware
+ * cursor.
+ */
+static sc_rndr_sw_t am335x_rend = {
+ am335x_rend_init,
+ am335x_rend_clear,
+ am335x_rend_draw_border,
+ am335x_rend_draw,
+ am335x_rend_set_cursor,
+ am335x_rend_draw_cursor,
+ am335x_rend_blink_cursor,
+ am335x_rend_set_mouse,
+ am335x_rend_draw_mouse
+};
+
+RENDERER(am335x_syscons, 0, am335x_rend, gfb_set);
+RENDERER_MODULE(am335x_syscons, gfb_set);
+
+static void
+am335x_rend_init(scr_stat* scp)
+{
+}
+
+static void
+am335x_rend_clear(scr_stat* scp, int c, int attr)
+{
+}
+
+static void
+am335x_rend_draw_border(scr_stat* scp, int color)
+{
+}
+
+static void
+am335x_rend_draw(scr_stat* scp, int from, int count, int flip)
+{
+ video_adapter_t* adp = scp->sc->adp;
+ int i, c, a;
+
+ if (!flip) {
+ /* Normal printing */
+ vidd_puts(adp, from, (uint16_t*)sc_vtb_pointer(&scp->vtb,
from), count);
+ } else {
+ /* This is for selections and such: invert the color attribute
*/
+ for (i = count; i-- > 0; ++from) {
+ c = sc_vtb_getc(&scp->vtb, from);
+ a = sc_vtb_geta(&scp->vtb, from) >> 8;
+ vidd_putc(adp, from, c, (a >> 4) | ((a & 0xf) << 4));
+ }
+ }
+}
+
+static void
+am335x_rend_set_cursor(scr_stat* scp, int base, int height, int blink)
+{
+}
+
+static void
+am335x_rend_draw_cursor(scr_stat* scp, int off, int blink, int on, int flip)
+{
+ video_adapter_t* adp = scp->sc->adp;
+ struct video_adapter_softc *sc;
*** DIFF OUTPUT TRUNCATED AT 1000 LINES ***
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