Add driver-model support to this driver.
Signed-off-by: Songjun Wu songjun.wu@microchip.com ---
Changes in v2: - Due to the peripheral clock driver improvement, remove the unneccessary clock calling.
drivers/video/Kconfig | 7 + drivers/video/Makefile | 2 +- drivers/video/atmel_hlcdfb.c | 314 ++++++++++++++++++++++++++++++++++++++++++- 3 files changed, 319 insertions(+), 4 deletions(-)
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig index 8361a717e7..c40b2cffb0 100644 --- a/drivers/video/Kconfig +++ b/drivers/video/Kconfig @@ -362,6 +362,13 @@ config DISPLAY The devices provide a simple interface to start up the display, read display information and enable it.
+config VIDEO_ATMEL_HLCD + bool "Enable ATMEL video support using HLCDC" + depends on DM_VIDEO + help + Only the LCD is supported in U-Boot. This option enables this support + which can be used on devices which have an LCD display connected. + config VIDEO_BROADWELL_IGD bool "Enable Intel Broadwell integrated graphics device" depends on X86 diff --git a/drivers/video/Makefile b/drivers/video/Makefile index 3f045fe578..3d54cf91d1 100644 --- a/drivers/video/Makefile +++ b/drivers/video/Makefile @@ -22,7 +22,6 @@ endif obj-$(CONFIG_VIDEO_BROADWELL_IGD) += broadwell_igd.o
obj-$(CONFIG_ATI_RADEON_FB) += ati_radeon_fb.o videomodes.o -obj-$(CONFIG_ATMEL_HLCD) += atmel_hlcdfb.o obj-$(CONFIG_ATMEL_LCD) += atmel_lcdfb.o obj-$(CONFIG_CFB_CONSOLE) += cfb_console.o obj-$(CONFIG_FSL_DIU_FB) += fsl_diu_fb.o videomodes.o @@ -35,6 +34,7 @@ obj-$(CONFIG_S6E8AX0) += s6e8ax0.o obj-$(CONFIG_S6E63D6) += s6e63d6.o obj-$(CONFIG_LD9040) += ld9040.o obj-$(CONFIG_SED156X) += sed156x.o +obj-$(CONFIG_VIDEO_ATMEL_HLCD) += atmel_hlcdfb.o obj-$(CONFIG_VIDEO_BCM2835) += bcm2835.o obj-$(CONFIG_VIDEO_COREBOOT) += coreboot_fb.o obj-$(CONFIG_VIDEO_CT69000) += ct69000.o videomodes.o diff --git a/drivers/video/atmel_hlcdfb.c b/drivers/video/atmel_hlcdfb.c index 960b474b76..0bcb92b2cf 100644 --- a/drivers/video/atmel_hlcdfb.c +++ b/drivers/video/atmel_hlcdfb.c @@ -10,13 +10,24 @@ #include <asm/io.h> #include <asm/arch/gpio.h> #include <asm/arch/clk.h> +#include <clk.h> +#include <dm.h> +#include <fdtdec.h> #include <lcd.h> +#include <video.h> #include <atmel_hlcdc.h>
#if defined(CONFIG_LCD_LOGO) #include <bmp_logo.h> #endif
+DECLARE_GLOBAL_DATA_PTR; + +#define lcdc_readl(reg) __raw_readl((reg)) +#define lcdc_writel(reg, val) __raw_writel((val), (reg)) + +#ifndef CONFIG_DM_VIDEO + /* configurable parameters */ #define ATMEL_LCDC_CVAL_DEFAULT 0xc8 #define ATMEL_LCDC_DMA_BURST_LEN 8 @@ -26,9 +37,6 @@
#define ATMEL_LCDC_FIFO_SIZE 512
-#define lcdc_readl(reg) __raw_readl((reg)) -#define lcdc_writel(reg, val) __raw_writel((val), (reg)) - /* * the CLUT register map as following * RCLUT(24 ~ 16), GCLUT(15 ~ 8), BCLUT(7 ~ 0) @@ -218,3 +226,303 @@ void lcd_ctrl_init(void *lcdbase) /* Enable flushing if we enabled dcache */ lcd_set_flush_dcache(1); } + +#else + +enum { + LCD_MAX_WIDTH = 1024, + LCD_MAX_HEIGHT = 768, + LCD_MAX_LOG2_BPP = VIDEO_BPP16, +}; + +struct atmel_hlcdc_priv { + struct atmel_hlcd_regs *regs; + struct display_timing timing; + unsigned int vl_bpix; + unsigned int guard_time; + ulong clk_rate; +}; + +static int at91_hlcdc_enable_clk(struct udevice *dev) +{ + struct atmel_hlcdc_priv *priv = dev_get_priv(dev); + struct clk clk; + ulong clk_rate; + int ret; + + ret = clk_get_by_index(dev, 0, &clk); + if (ret) + return -EINVAL; + + ret = clk_enable(&clk); + if (ret) + return ret; + + clk_rate = clk_get_rate(&clk); + if (!clk_rate) + return -ENODEV; + + priv->clk_rate = clk_rate; + + clk_free(&clk); + + return 0; +} + +static void atmel_hlcdc_init(struct udevice *dev) +{ + struct video_uc_platdata *uc_plat = dev_get_uclass_platdata(dev); + struct atmel_hlcdc_priv *priv = dev_get_priv(dev); + struct atmel_hlcd_regs *regs = priv->regs; + struct display_timing *timing = &priv->timing; + struct lcd_dma_desc *desc; + unsigned long value, vl_clk_pol; + + /* Disable DISP signal */ + lcdc_writel(®s->lcdc_lcddis, LCDC_LCDDIS_DISPDIS); + while ((lcdc_readl(®s->lcdc_lcdsr) & LCDC_LCDSR_DISPSTS)) + udelay(1); + /* Disable synchronization */ + lcdc_writel(®s->lcdc_lcddis, LCDC_LCDDIS_SYNCDIS); + while ((lcdc_readl(®s->lcdc_lcdsr) & LCDC_LCDSR_LCDSTS)) + udelay(1); + /* Disable pixel clock */ + lcdc_writel(®s->lcdc_lcddis, LCDC_LCDDIS_CLKDIS); + while ((lcdc_readl(®s->lcdc_lcdsr) & LCDC_LCDSR_CLKSTS)) + udelay(1); + /* Disable PWM */ + lcdc_writel(®s->lcdc_lcddis, LCDC_LCDDIS_PWMDIS); + while ((lcdc_readl(®s->lcdc_lcdsr) & LCDC_LCDSR_PWMSTS)) + udelay(1); + + /* Set pixel clock */ + value = priv->clk_rate / timing->pixelclock.typ; + if (priv->clk_rate % timing->pixelclock.typ) + value++; + + vl_clk_pol = 0; + if (timing->flags & DISPLAY_FLAGS_PIXDATA_NEGEDGE) + vl_clk_pol = LCDC_LCDCFG0_CLKPOL; + + if (value < 1) { + /* Using system clock as pixel clock */ + lcdc_writel(®s->lcdc_lcdcfg0, + LCDC_LCDCFG0_CLKDIV(0) + | LCDC_LCDCFG0_CGDISHCR + | LCDC_LCDCFG0_CGDISHEO + | LCDC_LCDCFG0_CGDISOVR1 + | LCDC_LCDCFG0_CGDISBASE + | vl_clk_pol + | LCDC_LCDCFG0_CLKSEL); + + } else { + lcdc_writel(®s->lcdc_lcdcfg0, + LCDC_LCDCFG0_CLKDIV(value - 2) + | LCDC_LCDCFG0_CGDISHCR + | LCDC_LCDCFG0_CGDISHEO + | LCDC_LCDCFG0_CGDISOVR1 + | LCDC_LCDCFG0_CGDISBASE + | vl_clk_pol); + } + + /* Initialize control register 5 */ + value = 0; + + if (!(timing->flags & DISPLAY_FLAGS_HSYNC_HIGH)) + value |= LCDC_LCDCFG5_HSPOL; + if (!(timing->flags & DISPLAY_FLAGS_VSYNC_HIGH)) + value |= LCDC_LCDCFG5_VSPOL; + +#ifndef LCD_OUTPUT_BPP + /* Output is 24bpp */ + value |= LCDC_LCDCFG5_MODE_OUTPUT_24BPP; +#else + switch (LCD_OUTPUT_BPP) { + case 12: + value |= LCDC_LCDCFG5_MODE_OUTPUT_12BPP; + break; + case 16: + value |= LCDC_LCDCFG5_MODE_OUTPUT_16BPP; + break; + case 18: + value |= LCDC_LCDCFG5_MODE_OUTPUT_18BPP; + break; + case 24: + value |= LCDC_LCDCFG5_MODE_OUTPUT_24BPP; + break; + default: + BUG(); + break; + } +#endif + + value |= LCDC_LCDCFG5_GUARDTIME(priv->guard_time); + value |= (LCDC_LCDCFG5_DISPDLY | LCDC_LCDCFG5_VSPDLYS); + lcdc_writel(®s->lcdc_lcdcfg5, value); + + /* Vertical & Horizontal Timing */ + value = LCDC_LCDCFG1_VSPW(timing->vsync_len.typ - 1); + value |= LCDC_LCDCFG1_HSPW(timing->hsync_len.typ - 1); + lcdc_writel(®s->lcdc_lcdcfg1, value); + + value = LCDC_LCDCFG2_VBPW(timing->vback_porch.typ); + value |= LCDC_LCDCFG2_VFPW(timing->vfront_porch.typ - 1); + lcdc_writel(®s->lcdc_lcdcfg2, value); + + value = LCDC_LCDCFG3_HBPW(timing->hback_porch.typ - 1); + value |= LCDC_LCDCFG3_HFPW(timing->hfront_porch.typ - 1); + lcdc_writel(®s->lcdc_lcdcfg3, value); + + /* Display size */ + value = LCDC_LCDCFG4_RPF(timing->vactive.typ - 1); + value |= LCDC_LCDCFG4_PPL(timing->hactive.typ - 1); + lcdc_writel(®s->lcdc_lcdcfg4, value); + + lcdc_writel(®s->lcdc_basecfg0, + LCDC_BASECFG0_BLEN_AHB_INCR4 | LCDC_BASECFG0_DLBO); + + switch (VNBITS(priv->vl_bpix)) { + case 16: + lcdc_writel(®s->lcdc_basecfg1, + LCDC_BASECFG1_RGBMODE_16BPP_RGB_565); + break; + case 32: + lcdc_writel(®s->lcdc_basecfg1, + LCDC_BASECFG1_RGBMODE_24BPP_RGB_888); + break; + default: + BUG(); + break; + } + + lcdc_writel(®s->lcdc_basecfg2, LCDC_BASECFG2_XSTRIDE(0)); + lcdc_writel(®s->lcdc_basecfg3, 0); + lcdc_writel(®s->lcdc_basecfg4, LCDC_BASECFG4_DMA); + + /* Disable all interrupts */ + lcdc_writel(®s->lcdc_lcdidr, ~0UL); + lcdc_writel(®s->lcdc_baseidr, ~0UL); + + /* Setup the DMA descriptor, this descriptor will loop to itself */ + desc = (struct lcd_dma_desc *)(uc_plat->base - 16); + + desc->address = (u32)uc_plat->base; + + /* Disable DMA transfer interrupt & descriptor loaded interrupt. */ + desc->control = LCDC_BASECTRL_ADDIEN | LCDC_BASECTRL_DSCRIEN + | LCDC_BASECTRL_DMAIEN | LCDC_BASECTRL_DFETCH; + desc->next = (u32)desc; + + /* Flush the DMA descriptor if we enabled dcache */ + flush_dcache_range((u32)desc, (u32)desc + sizeof(*desc)); + + lcdc_writel(®s->lcdc_baseaddr, desc->address); + lcdc_writel(®s->lcdc_basectrl, desc->control); + lcdc_writel(®s->lcdc_basenext, desc->next); + lcdc_writel(®s->lcdc_basecher, + LCDC_BASECHER_CHEN | LCDC_BASECHER_UPDATEEN); + + /* Enable LCD */ + value = lcdc_readl(®s->lcdc_lcden); + lcdc_writel(®s->lcdc_lcden, value | LCDC_LCDEN_CLKEN); + while (!(lcdc_readl(®s->lcdc_lcdsr) & LCDC_LCDSR_CLKSTS)) + udelay(1); + value = lcdc_readl(®s->lcdc_lcden); + lcdc_writel(®s->lcdc_lcden, value | LCDC_LCDEN_SYNCEN); + while (!(lcdc_readl(®s->lcdc_lcdsr) & LCDC_LCDSR_LCDSTS)) + udelay(1); + value = lcdc_readl(®s->lcdc_lcden); + lcdc_writel(®s->lcdc_lcden, value | LCDC_LCDEN_DISPEN); + while (!(lcdc_readl(®s->lcdc_lcdsr) & LCDC_LCDSR_DISPSTS)) + udelay(1); + value = lcdc_readl(®s->lcdc_lcden); + lcdc_writel(®s->lcdc_lcden, value | LCDC_LCDEN_PWMEN); + while (!(lcdc_readl(®s->lcdc_lcdsr) & LCDC_LCDSR_PWMSTS)) + udelay(1); +} + +static int atmel_hlcdc_probe(struct udevice *dev) +{ + struct video_priv *uc_priv = dev_get_uclass_priv(dev); + struct atmel_hlcdc_priv *priv = dev_get_priv(dev); + int ret; + + ret = at91_hlcdc_enable_clk(dev); + if (ret) + return ret; + + atmel_hlcdc_init(dev); + + uc_priv->xsize = priv->timing.hactive.typ; + uc_priv->ysize = priv->timing.vactive.typ; + uc_priv->bpix = priv->vl_bpix; + + /* Enable flushing if we enabled dcache */ + video_set_flush_dcache(dev, true); + + return 0; +} + +static int atmel_hlcdc_ofdata_to_platdata(struct udevice *dev) +{ + struct atmel_hlcdc_priv *priv = dev_get_priv(dev); + const void *blob = gd->fdt_blob; + int node = dev->of_offset; + + priv->regs = (struct atmel_hlcd_regs *)dev_get_addr(dev); + if (!priv->regs) { + debug("%s: No display controller address\n", __func__); + return -EINVAL; + } + + if (fdtdec_decode_display_timing(blob, dev->of_offset, + 0, &priv->timing)) { + debug("%s: Failed to decode display timing\n", __func__); + return -EINVAL; + } + + if (priv->timing.hactive.typ > LCD_MAX_WIDTH) + priv->timing.hactive.typ = LCD_MAX_WIDTH; + + if (priv->timing.vactive.typ > LCD_MAX_HEIGHT) + priv->timing.vactive.typ = LCD_MAX_HEIGHT; + + priv->vl_bpix = fdtdec_get_int(blob, node, "atmel,vl-bpix", 0); + if (!priv->vl_bpix) { + debug("%s: Failed to get bits per pixel\n", __func__); + return -EINVAL; + } + + priv->guard_time = fdtdec_get_int(blob, node, "atmel,guard-time", 1); + + return 0; +} + +static int atmel_hlcdc_bind(struct udevice *dev) +{ + struct video_uc_platdata *uc_plat = dev_get_uclass_platdata(dev); + + uc_plat->size = LCD_MAX_WIDTH * LCD_MAX_HEIGHT * + (1 << LCD_MAX_LOG2_BPP) / 8; + + debug("%s: Frame buffer size %x\n", __func__, uc_plat->size); + + return 0; +} + +static const struct udevice_id atmel_hlcdc_ids[] = { + { .compatible = "atmel,sama5d2-hlcdc" }, + { } +}; + +U_BOOT_DRIVER(atmel_hlcdfb) = { + .name = "atmel_hlcdfb", + .id = UCLASS_VIDEO, + .of_match = atmel_hlcdc_ids, + .bind = atmel_hlcdc_bind, + .probe = atmel_hlcdc_probe, + .ofdata_to_platdata = atmel_hlcdc_ofdata_to_platdata, + .priv_auto_alloc_size = sizeof(struct atmel_hlcdc_priv), +}; + +#endif