diff options
Diffstat (limited to 'hw/pl110.c')
| -rw-r--r-- | hw/pl110.c | 115 |
1 files changed, 96 insertions, 19 deletions
@@ -24,15 +24,25 @@ enum pl110_bppmode BPP_4, BPP_8, BPP_16, - BPP_32 + BPP_32, + BPP_16_565, /* PL111 only */ + BPP_12 /* PL111 only */ +}; + + +/* The Versatile/PB uses a slightly modified PL110 controller. */ +enum pl110_version +{ + PL110, + PL110_VERSATILE, + PL111 }; typedef struct { SysBusDevice busdev; DisplayState *ds; - /* The Versatile/PB uses a slightly modified PL110 controller. */ - int versatile; + int version; uint32_t timing[4]; uint32_t cr; uint32_t upbase; @@ -43,6 +53,7 @@ typedef struct { int rows; enum pl110_bppmode bpp; int invalidate; + uint32_t mux_ctrl; uint32_t pallette[256]; uint32_t raw_pallette[128]; qemu_irq irq; @@ -50,10 +61,10 @@ typedef struct { static const VMStateDescription vmstate_pl110 = { .name = "pl110", - .version_id = 1, + .version_id = 2, .minimum_version_id = 1, .fields = (VMStateField[]) { - VMSTATE_INT32(versatile, pl110_state), + VMSTATE_INT32(version, pl110_state), VMSTATE_UINT32_ARRAY(timing, pl110_state, 4), VMSTATE_UINT32(cr, pl110_state), VMSTATE_UINT32(upbase, pl110_state), @@ -66,6 +77,7 @@ static const VMStateDescription vmstate_pl110 = { VMSTATE_INT32(invalidate, pl110_state), VMSTATE_UINT32_ARRAY(pallette, pl110_state, 256), VMSTATE_UINT32_ARRAY(raw_pallette, pl110_state, 128), + VMSTATE_UINT32_V(mux_ctrl, pl110_state, 2), VMSTATE_END_OF_LIST() } }; @@ -82,6 +94,17 @@ static const unsigned char pl110_versatile_id[] = #define pl110_versatile_id pl110_id #endif +static const unsigned char pl111_id[] = { + 0x11, 0x11, 0x24, 0x00, 0x0d, 0xf0, 0x05, 0xb1 +}; + +/* Indexed by pl110_version */ +static const unsigned char *idregs[] = { + pl110_id, + pl110_versatile_id, + pl111_id +}; + #include "pixel_ops.h" #define BITS 8 @@ -144,12 +167,40 @@ static void pl110_update_display(void *opaque) if (s->cr & PL110_CR_BGR) bpp_offset = 0; else - bpp_offset = 18; + bpp_offset = 24; + + if ((s->version != PL111) && (s->bpp == BPP_16)) { + /* The PL110's native 16 bit mode is 5551; however + * most boards with a PL110 implement an external + * mux which allows bits to be reshuffled to give + * 565 format. The mux is typically controlled by + * an external system register. + * This is controlled by a GPIO input pin + * so boards can wire it up to their register. + * + * The PL111 straightforwardly implements both + * 5551 and 565 under control of the bpp field + * in the LCDControl register. + */ + switch (s->mux_ctrl) { + case 3: /* 565 BGR */ + bpp_offset = (BPP_16_565 - BPP_16); + break; + case 1: /* 5551 */ + break; + case 0: /* 888; also if we have loaded vmstate from an old version */ + case 2: /* 565 RGB */ + default: + /* treat as 565 but honour BGR bit */ + bpp_offset += (BPP_16_565 - BPP_16); + break; + } + } if (s->cr & PL110_CR_BEBO) - fn = fntable[s->bpp + 6 + bpp_offset]; + fn = fntable[s->bpp + 8 + bpp_offset]; else if (s->cr & PL110_CR_BEPO) - fn = fntable[s->bpp + 12 + bpp_offset]; + fn = fntable[s->bpp + 16 + bpp_offset]; else fn = fntable[s->bpp + bpp_offset]; @@ -167,6 +218,8 @@ static void pl110_update_display(void *opaque) case BPP_8: break; case BPP_16: + case BPP_16_565: + case BPP_12: src_width <<= 1; break; case BPP_32: @@ -253,10 +306,7 @@ static uint32_t pl110_read(void *opaque, target_phys_addr_t offset) pl110_state *s = (pl110_state *)opaque; if (offset >= 0xfe0 && offset < 0x1000) { - if (s->versatile) - return pl110_versatile_id[(offset - 0xfe0) >> 2]; - else - return pl110_id[(offset - 0xfe0) >> 2]; + return idregs[s->version][(offset - 0xfe0) >> 2]; } if (offset >= 0x200 && offset < 0x400) { return s->raw_pallette[(offset - 0x200) >> 2]; @@ -275,12 +325,14 @@ static uint32_t pl110_read(void *opaque, target_phys_addr_t offset) case 5: /* LCDLPBASE */ return s->lpbase; case 6: /* LCDIMSC */ - if (s->versatile) - return s->cr; + if (s->version != PL110) { + return s->cr; + } return s->int_mask; case 7: /* LCDControl */ - if (s->versatile) - return s->int_mask; + if (s->version != PL110) { + return s->int_mask; + } return s->cr; case 8: /* LCDRIS */ return s->int_status; @@ -337,15 +389,17 @@ static void pl110_write(void *opaque, target_phys_addr_t offset, s->lpbase = val; break; case 6: /* LCDIMSC */ - if (s->versatile) + if (s->version != PL110) { goto control; + } imsc: s->int_mask = val; pl110_update(s); break; case 7: /* LCDControl */ - if (s->versatile) + if (s->version != PL110) { goto imsc; + } control: s->cr = val; s->bpp = (val >> 1) & 7; @@ -374,6 +428,12 @@ static CPUWriteMemoryFunc * const pl110_writefn[] = { pl110_write }; +static void pl110_mux_ctrl_set(void *opaque, int line, int level) +{ + pl110_state *s = (pl110_state *)opaque; + s->mux_ctrl = level; +} + static int pl110_init(SysBusDevice *dev) { pl110_state *s = FROM_SYSBUS(pl110_state, dev); @@ -384,6 +444,7 @@ static int pl110_init(SysBusDevice *dev) DEVICE_NATIVE_ENDIAN); sysbus_init_mmio(dev, 0x1000, iomemtype); sysbus_init_irq(dev, &s->irq); + qdev_init_gpio_in(&s->busdev.qdev, pl110_mux_ctrl_set, 1); s->ds = graphic_console_init(pl110_update_display, pl110_invalidate_display, NULL, NULL, s); @@ -393,7 +454,14 @@ static int pl110_init(SysBusDevice *dev) static int pl110_versatile_init(SysBusDevice *dev) { pl110_state *s = FROM_SYSBUS(pl110_state, dev); - s->versatile = 1; + s->version = PL110_VERSATILE; + return pl110_init(dev); +} + +static int pl111_init(SysBusDevice *dev) +{ + pl110_state *s = FROM_SYSBUS(pl110_state, dev); + s->version = PL111; return pl110_init(dev); } @@ -413,10 +481,19 @@ static SysBusDeviceInfo pl110_versatile_info = { .qdev.no_user = 1, }; +static SysBusDeviceInfo pl111_info = { + .init = pl111_init, + .qdev.name = "pl111", + .qdev.size = sizeof(pl110_state), + .qdev.vmsd = &vmstate_pl110, + .qdev.no_user = 1, +}; + static void pl110_register_devices(void) { sysbus_register_withprop(&pl110_info); sysbus_register_withprop(&pl110_versatile_info); + sysbus_register_withprop(&pl111_info); } device_init(pl110_register_devices) |