#include "videomodes.h"
#include "da8xx-fb.h"
+#if !defined(DA8XX_LCD_CNTL_BASE)
+#define DA8XX_LCD_CNTL_BASE DAVINCI_LCD_CNTL_BASE
+#endif
+
#define DRIVER_NAME "da8xx_lcdc"
+#define LCD_VERSION_1 1
+#define LCD_VERSION_2 2
+
/* LCD Status Register */
#define LCD_END_OF_FRAME1 (1 << 9)
#define LCD_END_OF_FRAME0 (1 << 8)
#define LCD_DMA_BURST_4 0x2
#define LCD_DMA_BURST_8 0x3
#define LCD_DMA_BURST_16 0x4
-#define LCD_END_OF_FRAME_INT_ENA (1 << 2)
+#define LCD_V1_END_OF_FRAME_INT_ENA (1 << 2)
+#define LCD_V2_END_OF_FRAME0_INT_ENA (1 << 8)
+#define LCD_V2_END_OF_FRAME1_INT_ENA (1 << 9)
#define LCD_DUAL_FRAME_BUFFER_ENABLE (1 << 0)
+#define LCD_V2_TFT_24BPP_MODE (1 << 25)
+#define LCD_V2_TFT_24BPP_UNPACK (1 << 26)
+
/* LCD Control Register */
#define LCD_CLK_DIVISOR(x) ((x) << 8)
#define LCD_RASTER_MODE 0x01
#define LCD_MONO_8BIT_MODE (1 << 9)
#define LCD_RASTER_ORDER (1 << 8)
#define LCD_TFT_MODE (1 << 7)
-#define LCD_UNDERFLOW_INT_ENA (1 << 6)
-#define LCD_PL_ENABLE (1 << 4)
+#define LCD_V1_UNDERFLOW_INT_ENA (1 << 6)
+#define LCD_V2_UNDERFLOW_INT_ENA (1 << 5)
+#define LCD_V1_PL_INT_ENA (1 << 4)
+#define LCD_V2_PL_INT_ENA (1 << 6)
#define LCD_MONOCHROME_MODE (1 << 1)
#define LCD_RASTER_ENABLE (1 << 0)
#define LCD_TFT_ALT_ENABLE (1 << 23)
#define LCD_STN_565_ENABLE (1 << 24)
+#define LCD_V2_DMA_CLK_EN (1 << 2)
+#define LCD_V2_LIDD_CLK_EN (1 << 1)
+#define LCD_V2_CORE_CLK_EN (1 << 0)
+#define LCD_V2_LPP_B10 26
+#define LCD_V2_TFT_24BPP_MODE (1 << 25)
+#define LCD_V2_TFT_24BPP_UNPACK (1 << 26)
/* LCD Raster Timing 2 Register */
#define LCD_AC_BIAS_TRANSITIONS_PER_INT(x) ((x) << 16)
#define LCD_INVERT_LINE_CLOCK (1 << 21)
#define LCD_INVERT_FRAME_CLOCK (1 << 20)
+/* Clock registers available only on Version 2 */
+#define LCD_CLK_MAIN_RESET (1 << 3)
/* LCD Block */
struct da8xx_lcd_regs {
u32 revid;
u32 dma_frm_buf_ceiling_addr_0;
u32 dma_frm_buf_base_addr_1;
u32 dma_frm_buf_ceiling_addr_1;
+ u32 resv1;
+ u32 raw_stat;
+ u32 masked_stat;
+ u32 int_ena_set;
+ u32 int_ena_clr;
+ u32 end_of_int_ind;
+ /* Clock registers available only on Version 2 */
+ u32 clk_ena;
+ u32 clk_reset;
};
#define LCD_NUM_BUFFERS 1
#define RIGHT_MARGIN 64
#define UPPER_MARGIN 32
#define LOWER_MARGIN 32
+#define WAIT_FOR_FRAME_DONE true
+#define NO_WAIT_FOR_FRAME_DONE false
#define calc_fbsize() (panel.plnSizeX * panel.plnSizeY * panel.gdfBytesPP)
static const struct da8xx_panel *lcd_panel;
static struct fb_info *da8xx_fb_info;
static int bits_x_pixel;
+static unsigned int lcd_revision;
+const struct lcd_ctrl_config *da8xx_lcd_cfg;
static inline unsigned int lcdc_read(u32 *addr)
{
.accel = FB_ACCEL_NONE
};
-static const struct display_panel disp_panel = {
- QVGA,
- 16,
- 16,
- COLOR_ACTIVE,
-};
-
-static const struct lcd_ctrl_config lcd_cfg = {
- &disp_panel,
- .ac_bias = 255,
- .ac_bias_intrpt = 0,
- .dma_burst_sz = 16,
- .bpp = 16,
- .fdd = 255,
- .tft_alt_mode = 0,
- .stn_565_mode = 0,
- .mono_8bit_mode = 0,
- .invert_line_clock = 1,
- .invert_frm_clock = 1,
- .sync_edge = 0,
- .sync_ctrl = 1,
- .raster_order = 0,
-};
-
/* Enable the Raster Engine of the LCD Controller */
static inline void lcd_enable_raster(void)
{
u32 reg;
+ /* Put LCDC in reset for several cycles */
+ if (lcd_revision == LCD_VERSION_2)
+ lcdc_write(LCD_CLK_MAIN_RESET,
+ &da8xx_fb_reg_base->clk_reset);
+
+ udelay(1000);
+ /* Bring LCDC out of reset */
+ if (lcd_revision == LCD_VERSION_2)
+ lcdc_write(0,
+ &da8xx_fb_reg_base->clk_reset);
+
+ udelay(1000);
+
reg = lcdc_read(&da8xx_fb_reg_base->raster_ctrl);
if (!(reg & LCD_RASTER_ENABLE))
lcdc_write(reg | LCD_RASTER_ENABLE,
}
/* Disable the Raster Engine of the LCD Controller */
-static inline void lcd_disable_raster(void)
+static inline void lcd_disable_raster(bool wait_for_frame_done)
{
u32 reg;
+ u32 loop_cnt = 0;
+ u32 stat;
+ u32 i = 0;
+
+ if (wait_for_frame_done)
+ loop_cnt = 5000;
reg = lcdc_read(&da8xx_fb_reg_base->raster_ctrl);
if (reg & LCD_RASTER_ENABLE)
lcdc_write(reg & ~LCD_RASTER_ENABLE,
&da8xx_fb_reg_base->raster_ctrl);
+
+ /* Wait for the current frame to complete */
+ do {
+ if (lcd_revision == LCD_VERSION_1)
+ stat = lcdc_read(&da8xx_fb_reg_base->stat);
+ else
+ stat = lcdc_read(&da8xx_fb_reg_base->raw_stat);
+
+ mdelay(1);
+ } while (!(stat & 0x01) && (i++ < loop_cnt));
+
+ if (lcd_revision == LCD_VERSION_1)
+ lcdc_write(stat, &da8xx_fb_reg_base->stat);
+ else
+ lcdc_write(stat, &da8xx_fb_reg_base->raw_stat);
+
+ if ((loop_cnt != 0) && (i >= loop_cnt)) {
+ printf("LCD Controller timed out\n");
+ return;
+ }
}
static void lcd_blit(int load_mode, struct da8xx_fb_par *par)
u32 end;
u32 reg_ras;
u32 reg_dma;
+ u32 reg_int;
/* init reg to clear PLM (loading mode) fields */
reg_ras = lcdc_read(&da8xx_fb_reg_base->raster_ctrl);
end = par->dma_end;
reg_ras |= LCD_PALETTE_LOAD_MODE(DATA_ONLY);
- reg_dma |= LCD_END_OF_FRAME_INT_ENA;
+ if (lcd_revision == LCD_VERSION_1) {
+ reg_dma |= LCD_V1_END_OF_FRAME_INT_ENA;
+ } else {
+ reg_int = lcdc_read(&da8xx_fb_reg_base->int_ena_set) |
+ LCD_V2_END_OF_FRAME0_INT_ENA |
+ LCD_V2_END_OF_FRAME1_INT_ENA |
+ LCD_V2_UNDERFLOW_INT_ENA | LCD_SYNC_LOST;
+ lcdc_write(reg_int, &da8xx_fb_reg_base->int_ena_set);
+ }
#if (LCD_NUM_BUFFERS == 2)
reg_dma |= LCD_DUAL_FRAME_BUFFER_ENABLE;
end = start + par->palette_sz - 1;
reg_ras |= LCD_PALETTE_LOAD_MODE(PALETTE_ONLY);
- reg_ras |= LCD_PL_ENABLE;
+ if (lcd_revision == LCD_VERSION_1) {
+ reg_ras |= LCD_V1_PL_INT_ENA;
+ } else {
+ reg_int = lcdc_read(&da8xx_fb_reg_base->int_ena_set) |
+ LCD_V2_PL_INT_ENA;
+ lcdc_write(reg_int, &da8xx_fb_reg_base->int_ena_set);
+ }
lcdc_write(start, &da8xx_fb_reg_base->dma_frm_buf_base_addr_0);
lcdc_write(end, &da8xx_fb_reg_base->dma_frm_buf_ceiling_addr_0);
static int lcd_cfg_display(const struct lcd_ctrl_config *cfg)
{
u32 reg;
+ u32 reg_int;
reg = lcdc_read(&da8xx_fb_reg_base->raster_ctrl) & ~(LCD_TFT_MODE |
LCD_MONO_8BIT_MODE |
}
/* enable additional interrupts here */
- reg |= LCD_UNDERFLOW_INT_ENA;
+ if (lcd_revision == LCD_VERSION_1) {
+ reg |= LCD_V1_UNDERFLOW_INT_ENA;
+ } else {
+ reg_int = lcdc_read(&da8xx_fb_reg_base->int_ena_set) |
+ LCD_V2_UNDERFLOW_INT_ENA;
+ lcdc_write(reg_int, &da8xx_fb_reg_base->int_ena_set);
+ }
lcdc_write(reg, &da8xx_fb_reg_base->raster_ctrl);
/* Set the Panel Width */
/* Pixels per line = (PPL + 1)*16 */
- /*0x3F in bits 4..9 gives max horisontal resolution = 1024 pixels*/
- width &= 0x3f0;
+ if (lcd_revision == LCD_VERSION_1) {
+ /*
+ * 0x3F in bits 4..9 gives max horisontal resolution = 1024
+ * pixels
+ */
+ width &= 0x3f0;
+ } else {
+ /*
+ * 0x7F in bits 4..10 gives max horizontal resolution = 2048
+ * pixels.
+ */
+ width &= 0x7f0;
+ }
reg = lcdc_read(&da8xx_fb_reg_base->raster_timing_0);
reg &= 0xfffffc00;
- reg |= ((width >> 4) - 1) << 4;
+ if (lcd_revision == LCD_VERSION_1) {
+ reg |= ((width >> 4) - 1) << 4;
+ } else {
+ width = (width >> 4) - 1;
+ reg |= ((width & 0x3f) << 4) | ((width & 0x40) >> 3);
+ }
lcdc_write(reg, &da8xx_fb_reg_base->raster_timing_0);
/* Set the Panel Height */
+ /* Set bits 9:0 of Lines Per Pixel */
reg = lcdc_read(&da8xx_fb_reg_base->raster_timing_1);
reg = ((height - 1) & 0x3ff) | (reg & 0xfffffc00);
lcdc_write(reg, &da8xx_fb_reg_base->raster_timing_1);
+ /* Set bit 10 of Lines Per Pixel */
+ if (lcd_revision == LCD_VERSION_2) {
+ reg = lcdc_read(&da8xx_fb_reg_base->raster_timing_2);
+ reg |= ((height - 1) & 0x400) << 16;
+ lcdc_write(reg, &da8xx_fb_reg_base->raster_timing_2);
+ }
+
/* Set the Raster Order of the Frame Buffer */
reg = lcdc_read(&da8xx_fb_reg_base->raster_ctrl) & ~(1 << 8);
if (raster_order)
reg |= LCD_RASTER_ORDER;
+
+ if (bpp == 24)
+ reg |= (LCD_TFT_MODE | LCD_V2_TFT_24BPP_MODE);
+ else if (bpp == 32)
+ reg |= (LCD_TFT_MODE | LCD_V2_TFT_24BPP_MODE
+ | LCD_V2_TFT_24BPP_UNPACK);
+
lcdc_write(reg, &da8xx_fb_reg_base->raster_ctrl);
switch (bpp) {
case 2:
case 4:
case 16:
+ case 24:
+ case 32:
par->palette_sz = 16 * 2;
break;
par->pseudo_palette[regno] = red | green | blue;
+ if (palette[0] != 0x4000) {
+ update_hw = 1;
+ palette[0] = 0x4000;
+ }
+ } else if (((info->var.bits_per_pixel == 32) && regno < 32) ||
+ ((info->var.bits_per_pixel == 24) && regno < 24)) {
+ red >>= (24 - info->var.red.length);
+ red <<= info->var.red.offset;
+
+ green >>= (24 - info->var.green.length);
+ green <<= info->var.green.offset;
+
+ blue >>= (24 - info->var.blue.length);
+ blue <<= info->var.blue.offset;
+
+ par->pseudo_palette[regno] = red | green | blue;
+
if (palette[0] != 0x4000) {
update_hw = 1;
palette[0] = 0x4000;
static void lcd_reset(struct da8xx_fb_par *par)
{
/* Disable the Raster if previously Enabled */
- lcd_disable_raster();
+ lcd_disable_raster(NO_WAIT_FOR_FRAME_DONE);
/* DMA has to be disabled */
lcdc_write(0, &da8xx_fb_reg_base->dma_ctrl);
lcdc_write(0, &da8xx_fb_reg_base->raster_ctrl);
+
+ if (lcd_revision == LCD_VERSION_2) {
+ lcdc_write(0, &da8xx_fb_reg_base->int_ena_set);
+ /* Write 1 to reset */
+ lcdc_write(LCD_CLK_MAIN_RESET, &da8xx_fb_reg_base->clk_reset);
+ lcdc_write(0, &da8xx_fb_reg_base->clk_reset);
+ }
}
static void lcd_calc_clk_divider(struct da8xx_fb_par *par)
lcd_clk = clk_get(2);
div = lcd_clk / par->pxl_clk;
- debug("LCD Clock: 0x%x Divider: 0x%x PixClk: 0x%x\n",
- lcd_clk, div, par->pxl_clk);
+ debug("LCD Clock: %d Divider: %d PixClk: %d\n",
+ lcd_clk, div, par->pxl_clk);
/* Configure the LCD clock divisor. */
lcdc_write(LCD_CLK_DIVISOR(div) |
(LCD_RASTER_MODE & 0x1), &da8xx_fb_reg_base->ctrl);
+
+ if (lcd_revision == LCD_VERSION_2)
+ lcdc_write(LCD_V2_DMA_CLK_EN | LCD_V2_LIDD_CLK_EN |
+ LCD_V2_CORE_CLK_EN,
+ &da8xx_fb_reg_base->clk_ena);
}
static int lcd_init(struct da8xx_fb_par *par, const struct lcd_ctrl_config *cfg,
if (ret < 0)
return ret;
- if (QVGA != cfg->p_disp_panel->panel_type)
+ if ((QVGA != cfg->p_disp_panel->panel_type) &&
+ (WVGA != cfg->p_disp_panel->panel_type))
return -EINVAL;
if (cfg->bpp <= cfg->p_disp_panel->max_bpp &&
&da8xx_fb_reg_base->dma_frm_buf_ceiling_addr_1);
}
-static u32 lcdc_irq_handler(void)
+static u32 lcdc_irq_handler_rev01(void)
{
struct da8xx_fb_par *par = da8xx_fb_info->par;
u32 stat = lcdc_read(&da8xx_fb_reg_base->stat);
if ((stat & LCD_SYNC_LOST) && (stat & LCD_FIFO_UNDERFLOW)) {
debug("LCD_SYNC_LOST\n");
- lcd_disable_raster();
+ lcd_disable_raster(NO_WAIT_FOR_FRAME_DONE);
lcdc_write(stat, &da8xx_fb_reg_base->stat);
lcd_enable_raster();
return LCD_SYNC_LOST;
* interrupt via the following write to the status register. If
* this is done after then one gets multiple PL done interrupts.
*/
- lcd_disable_raster();
+ lcd_disable_raster(NO_WAIT_FOR_FRAME_DONE);
lcdc_write(stat, &da8xx_fb_reg_base->stat);
/* Disable PL completion inerrupt */
reg_ras = lcdc_read(&da8xx_fb_reg_base->raster_ctrl);
- reg_ras &= ~LCD_PL_ENABLE;
+ reg_ras &= ~LCD_V1_PL_INT_ENA;
lcdc_write(reg_ras, &da8xx_fb_reg_base->raster_ctrl);
/* Setup and start data loading mode */
return stat;
}
+static u32 lcdc_irq_handler_rev02(void)
+{
+ struct da8xx_fb_par *par = da8xx_fb_info->par;
+ u32 stat = lcdc_read(&da8xx_fb_reg_base->masked_stat);
+ u32 reg_int;
+
+ if ((stat & LCD_SYNC_LOST) && (stat & LCD_FIFO_UNDERFLOW)) {
+ debug("LCD_SYNC_LOST\n");
+ lcd_disable_raster(NO_WAIT_FOR_FRAME_DONE);
+ lcdc_write(stat, &da8xx_fb_reg_base->masked_stat);
+ lcd_enable_raster();
+ lcdc_write(0, &da8xx_fb_reg_base->end_of_int_ind);
+ return LCD_SYNC_LOST;
+ } else if (stat & LCD_PL_LOAD_DONE) {
+ debug("LCD_PL_LOAD_DONE\n");
+ /*
+ * Must disable raster before changing state of any control bit.
+ * And also must be disabled before clearing the PL loading
+ * interrupt via the following write to the status register. If
+ * this is done after then one gets multiple PL done interrupts.
+ */
+ lcd_disable_raster(NO_WAIT_FOR_FRAME_DONE);
+
+ lcdc_write(stat, &da8xx_fb_reg_base->masked_stat);
+
+ /* Disable PL completion inerrupt */
+ reg_int = lcdc_read(&da8xx_fb_reg_base->int_ena_clr) |
+ (LCD_V2_PL_INT_ENA);
+ lcdc_write(reg_int, &da8xx_fb_reg_base->int_ena_clr);
+
+ /* Setup and start data loading mode */
+ lcd_blit(LOAD_DATA, par);
+ lcdc_write(0, &da8xx_fb_reg_base->end_of_int_ind);
+ return LCD_PL_LOAD_DONE;
+ } else {
+ lcdc_write(stat, &da8xx_fb_reg_base->masked_stat);
+
+ if (stat & LCD_END_OF_FRAME0)
+ debug("LCD_END_OF_FRAME0\n");
+
+ lcdc_write(par->dma_start,
+ &da8xx_fb_reg_base->dma_frm_buf_base_addr_0);
+ lcdc_write(par->dma_end,
+ &da8xx_fb_reg_base->dma_frm_buf_ceiling_addr_0);
+ par->vsync_flag = 1;
+ lcdc_write(0, &da8xx_fb_reg_base->end_of_int_ind);
+ return LCD_END_OF_FRAME0;
+ }
+ lcdc_write(0, &da8xx_fb_reg_base->end_of_int_ind);
+ return stat;
+}
+
+static u32 lcdc_irq_handler(void)
+{
+ if (lcd_revision == LCD_VERSION_1)
+ return lcdc_irq_handler_rev01();
+ else
+ return lcdc_irq_handler_rev02();
+}
+
static u32 wait_for_event(u32 event)
{
u32 timeout = 50000;
{
struct da8xx_fb_par *par;
u32 size;
+ u32 rev;
char *p;
if (!lcd_panel) {
gpanel.plnSizeY = lcd_panel->height;
switch (bits_x_pixel) {
+ case 32:
+ gpanel.gdfBytesPP = 4;
+ gpanel.gdfIndex = GDF_32BIT_X888RGB;
+ break;
case 24:
gpanel.gdfBytesPP = 4;
gpanel.gdfIndex = GDF_32BIT_X888RGB;
break;
}
- da8xx_fb_reg_base = (struct da8xx_lcd_regs *)DAVINCI_LCD_CNTL_BASE;
+ da8xx_fb_reg_base = (struct da8xx_lcd_regs *)DA8XX_LCD_CNTL_BASE;
+
+ /* Determine LCD IP Version */
+ rev = lcdc_read(&da8xx_fb_reg_base->revid);
+ switch (rev) {
+ case 0x4C100102:
+ lcd_revision = LCD_VERSION_1;
+ break;
+ case 0x4F200800:
+ case 0x4F201000:
+ lcd_revision = LCD_VERSION_2;
+ break;
+ default:
+ printf("Unknown PID Reg value 0x%x, defaulting to LCD revision 1\n",
+ rev);
+ lcd_revision = LCD_VERSION_1;
+ break;
+ }
- debug("Resolution: %dx%d %x\n",
- gpanel.winSizeX,
- gpanel.winSizeY,
- lcd_cfg.bpp);
+ debug("rev: 0x%x Resolution: %dx%d %d\n", rev,
+ gpanel.winSizeX,
+ gpanel.winSizeY,
+ da8xx_lcd_cfg->bpp);
size = sizeof(struct fb_info) + sizeof(struct da8xx_fb_par);
da8xx_fb_info = malloc(size);
par = da8xx_fb_info->par;
par->pxl_clk = lcd_panel->pxl_clk;
- if (lcd_init(par, &lcd_cfg, lcd_panel) < 0) {
+ if (lcd_init(par, da8xx_lcd_cfg, lcd_panel) < 0) {
printf("lcd_init failed\n");
goto err_release_fb;
}
/* allocate frame buffer */
- par->vram_size = lcd_panel->width * lcd_panel->height * lcd_cfg.bpp;
+ par->vram_size = lcd_panel->width * lcd_panel->height *
+ da8xx_lcd_cfg->bpp;
par->vram_size = par->vram_size * LCD_NUM_BUFFERS / 8;
par->vram_virt = malloc(par->vram_size);
da8xx_fb_info->screen_base = (char *) par->vram_virt;
da8xx_fb_fix.smem_start = gpanel.frameAdrs;
da8xx_fb_fix.smem_len = par->vram_size;
- da8xx_fb_fix.line_length = (lcd_panel->width * lcd_cfg.bpp) / 8;
+ da8xx_fb_fix.line_length = (lcd_panel->width * da8xx_lcd_cfg->bpp) / 8;
par->dma_start = par->vram_phys;
par->dma_end = par->dma_start + lcd_panel->height *
par->p_palette_base = (unsigned int)par->v_palette_base;
/* Initialize par */
- da8xx_fb_info->var.bits_per_pixel = lcd_cfg.bpp;
+ da8xx_fb_info->var.bits_per_pixel = da8xx_lcd_cfg->bpp;
da8xx_fb_var.xres = lcd_panel->width;
da8xx_fb_var.xres_virtual = lcd_panel->width;
da8xx_fb_var.yres_virtual = lcd_panel->height * LCD_NUM_BUFFERS;
da8xx_fb_var.grayscale =
- lcd_cfg.p_disp_panel->panel_shade == MONOCHROME ? 1 : 0;
- da8xx_fb_var.bits_per_pixel = lcd_cfg.bpp;
+ da8xx_lcd_cfg->p_disp_panel->panel_shade == MONOCHROME ? 1 : 0;
+ da8xx_fb_var.bits_per_pixel = da8xx_lcd_cfg->bpp;
da8xx_fb_var.hsync_len = lcd_panel->hsw;
da8xx_fb_var.vsync_len = lcd_panel->vsw;
/* Clear interrupt */
memset((void *)par->vram_virt, 0, par->vram_size);
- lcd_disable_raster();
- lcdc_write(0xFFFF, &da8xx_fb_reg_base->stat);
+ lcd_disable_raster(NO_WAIT_FOR_FRAME_DONE);
+ if (lcd_revision == LCD_VERSION_1)
+ lcdc_write(0xFFFF, &da8xx_fb_reg_base->stat);
+ else
+ lcdc_write(0xFFFF, &da8xx_fb_reg_base->masked_stat);
debug("Palette at 0x%x size %d\n", par->p_palette_base,
par->palette_sz);
lcdc_dma_start();
return;
}
-void da8xx_video_init(const struct da8xx_panel *panel, int bits_pixel)
+void da8xx_video_init(const struct da8xx_panel *panel,
+ const struct lcd_ctrl_config *lcd_cfg, int bits_pixel)
{
lcd_panel = panel;
+ da8xx_lcd_cfg = lcd_cfg;
bits_x_pixel = bits_pixel;
}
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