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Differential D25118 Diff 72618 sys/arm/ti/am335x/am335x_lcd.c

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sys/arm/ti/am335x/am335x_lcd.c

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#include <sys/sysctl.h> #include <sys/sysctl.h>
#include <vm/vm.h> #include <vm/vm.h>
#include <vm/pmap.h> #include <vm/pmap.h>
#include <sys/fbio.h> #include <sys/fbio.h>
#include <sys/consio.h> #include <sys/consio.h>
#include <machine/bus.h> #include <machine/bus.h>
#include <dev/extres/clk/clk.h>
#include <dev/fdt/fdt_common.h> #include <dev/fdt/fdt_common.h>
#include <dev/ofw/openfirm.h> #include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_bus.h> #include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h> #include <dev/ofw/ofw_bus_subr.h>
#include <dev/videomode/videomode.h> #include <dev/videomode/videomode.h>
#include <dev/videomode/edidvar.h> #include <dev/videomode/edidvar.h>
#include <dev/fb/fbreg.h> #include <dev/fb/fbreg.h>
#ifdef DEV_SC #ifdef DEV_SC
#include <dev/syscons/syscons.h> #include <dev/syscons/syscons.h>
#else /* VT */ #else /* VT */
#include <dev/vt/vt.h> #include <dev/vt/vt.h>
#endif #endif
#include <arm/ti/ti_prcm.h> #include <arm/ti/ti_sysc.h>
#include <arm/ti/ti_scm.h> #include <arm/ti/ti_scm.h>
#include "am335x_lcd.h" #include "am335x_lcd.h"
#include "am335x_pwm.h" #include "am335x_pwm.h"
#include "fb_if.h" #include "fb_if.h"
#include "hdmi_if.h" #include "hdmi_if.h"
▲ Show 20 Lines • Show All 137 Lines • ▼ Show 20 Linesstruct am335x_lcd_softc {
bus_dmamap_t sc_dma_map; bus_dmamap_t sc_dma_map;
size_t sc_fb_size; size_t sc_fb_size;
bus_addr_t sc_fb_phys; bus_addr_t sc_fb_phys;
uint8_t *sc_fb_base; uint8_t *sc_fb_base;
/* HDMI framer */ /* HDMI framer */
phandle_t sc_hdmi_framer; phandle_t sc_hdmi_framer;
eventhandler_tag sc_hdmi_evh; eventhandler_tag sc_hdmi_evh;
/* Clock */
clk_t sc_clk_dpll_disp_ck;
}; };
static void static void
am335x_fb_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int err) am335x_fb_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int err)
{ {
bus_addr_t *addr; bus_addr_t *addr;
if (err) if (err)
▲ Show 20 Lines • Show All 380 Lines • ▼ Show 20 Lines
{ {
int div; int div;
uint32_t reg, timing0, timing1, timing2; uint32_t reg, timing0, timing1, timing2;
uint32_t burst_log; uint32_t burst_log;
size_t dma_size; size_t dma_size;
uint32_t hbp, hfp, hsw; uint32_t hbp, hfp, hsw;
uint32_t vbp, vfp, vsw; uint32_t vbp, vfp, vsw;
uint32_t width, height; uint32_t width, height;
unsigned int ref_freq; uint64_t ref_freq;
int err; int err;
/* /*
* try to adjust clock to get double of requested frequency * try to adjust clock to get double of requested frequency
* HDMI/DVI displays are very sensitive to error in frequncy value * HDMI/DVI displays are very sensitive to error in frequncy value
*/ */
if (ti_prcm_clk_set_source_freq(LCDC_CLK, sc->sc_panel.panel_pxl_clk*2)) {
err = clk_set_freq(sc->sc_clk_dpll_disp_ck, sc->sc_panel.panel_pxl_clk*2,
CLK_SET_ROUND_ANY);
if (err != 0) {
device_printf(sc->sc_dev, "can't set source frequency\n"); device_printf(sc->sc_dev, "can't set source frequency\n");
return (ENXIO); return (ENXIO);
} }
if (ti_prcm_clk_get_source_freq(LCDC_CLK, &ref_freq)) { err = clk_get_freq(sc->sc_clk_dpll_disp_ck, &ref_freq);
if (err != 0) {
device_printf(sc->sc_dev, "can't get reference frequency\n"); device_printf(sc->sc_dev, "can't get reference frequency\n");
return (ENXIO); return (ENXIO);
} }
/* Panle initialization */ /* Panel initialization */
dma_size = round_page(sc->sc_panel.panel_width*sc->sc_panel.panel_height*sc->sc_panel.bpp/8); dma_size = round_page(sc->sc_panel.panel_width*sc->sc_panel.panel_height*sc->sc_panel.bpp/8);
/* /*
* Now allocate framebuffer memory * Now allocate framebuffer memory
*/ */
err = bus_dma_tag_create( err = bus_dma_tag_create(
bus_get_dma_tag(sc->sc_dev), bus_get_dma_tag(sc->sc_dev),
4, 0, /* alignment, boundary */ 4, 0, /* alignment, boundary */
▲ Show 20 Lines • Show All 318 Lines • ▼ Show 20 Linesam335x_lcd_attach(device_t dev)
am335x_read_hdmi_property(dev); am335x_read_hdmi_property(dev);
root = OF_finddevice("/"); root = OF_finddevice("/");
if (root == -1) { if (root == -1) {
device_printf(dev, "failed to get FDT root node\n"); device_printf(dev, "failed to get FDT root node\n");
return (ENXIO); return (ENXIO);
} }
/* Fixme: Cant find any reference in DTS for dpll_disp_ck@498 for now. */
err = clk_get_by_name(dev, "dpll_disp_ck@498", &sc->sc_clk_dpll_disp_ck);
if (err != 0) {
device_printf(dev, "Cant get dpll_disp_ck@49\n");
return (ENXIO);
}
sc->sc_panel.ac_bias = 255; sc->sc_panel.ac_bias = 255;
sc->sc_panel.ac_bias_intrpt = 0; sc->sc_panel.ac_bias_intrpt = 0;
sc->sc_panel.dma_burst_sz = 16; sc->sc_panel.dma_burst_sz = 16;
sc->sc_panel.bpp = 16; sc->sc_panel.bpp = 16;
sc->sc_panel.fdd = 128; sc->sc_panel.fdd = 128;
sc->sc_panel.sync_edge = 0; sc->sc_panel.sync_edge = 0;
sc->sc_panel.sync_ctrl = 1; sc->sc_panel.sync_ctrl = 1;
panel_node = fdt_find_compatible(root, "ti,tilcdc,panel", 1); panel_node = fdt_find_compatible(root, "ti,tilcdc,panel", 1);
if (panel_node != 0) { if (panel_node != 0) {
device_printf(dev, "using static panel info\n"); device_printf(dev, "using static panel info\n");
if (am335x_read_panel_info(dev, panel_node, &sc->sc_panel)) { if (am335x_read_panel_info(dev, panel_node, &sc->sc_panel)) {
device_printf(dev, "failed to read panel info\n"); device_printf(dev, "failed to read panel info\n");
return (ENXIO); return (ENXIO);
} }
if (am335x_read_timing(dev, panel_node, &sc->sc_panel)) { if (am335x_read_timing(dev, panel_node, &sc->sc_panel)) {
device_printf(dev, "failed to read timings\n"); device_printf(dev, "failed to read timings\n");
return (ENXIO); return (ENXIO);
} }
} }
ti_prcm_clk_enable(LCDC_CLK); err = ti_sysc_clock_enable(device_get_parent(dev));
if (err != 0) {
device_printf(dev, "Failed to enable sysc clkctrl, err %d\n", err);
return (ENXIO);
}
rid = 0; rid = 0;
sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
RF_ACTIVE); RF_ACTIVE);
if (!sc->sc_mem_res) { if (!sc->sc_mem_res) {
device_printf(dev, "cannot allocate memory window\n"); device_printf(dev, "cannot allocate memory window\n");
return (ENXIO); return (ENXIO);
} }
▲ Show 20 Lines • Show All 75 Lines • ▼ Show 20 Linesstatic driver_t am335x_lcd_driver = {
sizeof(struct am335x_lcd_softc), sizeof(struct am335x_lcd_softc),
}; };
static devclass_t am335x_lcd_devclass; static devclass_t am335x_lcd_devclass;
DRIVER_MODULE(am335x_lcd, simplebus, am335x_lcd_driver, am335x_lcd_devclass, 0, 0); DRIVER_MODULE(am335x_lcd, simplebus, am335x_lcd_driver, am335x_lcd_devclass, 0, 0);
MODULE_VERSION(am335x_lcd, 1); MODULE_VERSION(am335x_lcd, 1);
MODULE_DEPEND(am335x_lcd, simplebus, 1, 1, 1); MODULE_DEPEND(am335x_lcd, simplebus, 1, 1, 1);
MODULE_DEPEND(am335x_lcd, ti_sysc, 1, 1, 1);