From eab314f5909dba208d4cb7dc5aac6ee707d5d171 Mon Sep 17 00:00:00 2001 From: Jacob Chen Date: Mon, 14 Mar 2016 11:20:14 +0800 Subject: dm: video: Add a operation to display uclass The current display class only allow to get timing from edid. So add a operation to get timing directly from driver. In driver, I will use fdtdec_decode_display_timing to get timing. Signed-off-by: Jacob Chen Acked-by: Simon Glass --- drivers/video/display-uclass.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/video') diff --git a/drivers/video/display-uclass.c b/drivers/video/display-uclass.c index 31522eac65..e4763de73d 100644 --- a/drivers/video/display-uclass.c +++ b/drivers/video/display-uclass.c @@ -36,6 +36,9 @@ int display_read_timing(struct udevice *dev, struct display_timing *timing) u8 buf[EDID_EXT_SIZE]; int ret; + if (ops && ops->read_timing) + return ops->read_timing(dev, timing); + if (!ops || !ops->read_edid) return -ENOSYS; ret = ops->read_edid(dev, buf, sizeof(buf)); -- cgit From 35ac89dd8fe7e9373d8c4336e7fbe93ae3fd59d7 Mon Sep 17 00:00:00 2001 From: Jacob Chen Date: Mon, 14 Mar 2016 11:20:16 +0800 Subject: rockchip: video: Add a display driver for rockchip LVDS Some Rockchip SoCs support LVDS output. Add a display driver for this so that these displays can be used on supported boards. Signed-off-by: Jacob Chen Acked-by: Simon Glass --- drivers/video/rockchip/Makefile | 2 +- drivers/video/rockchip/rk_lvds.c | 254 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 255 insertions(+), 1 deletion(-) create mode 100644 drivers/video/rockchip/rk_lvds.c (limited to 'drivers/video') diff --git a/drivers/video/rockchip/Makefile b/drivers/video/rockchip/Makefile index 0e9a8acf69..7962f8611e 100644 --- a/drivers/video/rockchip/Makefile +++ b/drivers/video/rockchip/Makefile @@ -5,4 +5,4 @@ # SPDX-License-Identifier: GPL-2.0+ # -obj-y += rk_edp.o rk_hdmi.o rk_vop.o +obj-y += rk_edp.o rk_hdmi.o rk_vop.o rk_lvds.o diff --git a/drivers/video/rockchip/rk_lvds.c b/drivers/video/rockchip/rk_lvds.c new file mode 100644 index 0000000000..dc10b866c9 --- /dev/null +++ b/drivers/video/rockchip/rk_lvds.c @@ -0,0 +1,254 @@ +/* + * Copyright 2016 Rockchip Inc. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +DECLARE_GLOBAL_DATA_PTR; + +/** + * struct rk_lvds_priv - private rockchip lvds display driver info + * + * @reg: LVDS register address + * @grf: GRF register + * @panel: Panel device that is used in driver + * + * @output: Output mode, decided single or double channel, + * LVDS or LVTLL + * @format: Data format that RGB data will packing as + */ +struct rk_lvds_priv { + void __iomem *regs; + struct rk3288_grf *grf; + struct udevice *panel; + + int output; + int format; +}; + +static inline void lvds_writel(struct rk_lvds_priv *lvds, u32 offset, u32 val) +{ + writel(val, lvds->regs + offset); + + writel(val, lvds->regs + offset + 0x100); +} + +int rk_lvds_enable(struct udevice *dev, int panel_bpp, + const struct display_timing *edid) +{ + struct rk_lvds_priv *priv = dev_get_priv(dev); + struct display_plat *uc_plat = dev_get_uclass_platdata(dev); + int ret = 0; + unsigned int val = 0; + + ret = panel_enable_backlight(priv->panel); + if (ret) { + debug("%s: backlight error: %d\n", __func__, ret); + return ret; + } + + /* Select the video source */ + if (uc_plat->source_id) + val = RK3288_LVDS_SOC_CON6_SEL_VOP_LIT | + (RK3288_LVDS_SOC_CON6_SEL_VOP_LIT << 16); + else + val = RK3288_LVDS_SOC_CON6_SEL_VOP_LIT << 16; + rk_setreg(&priv->grf->soc_con6, val); + + /* Select data transfer format */ + val = priv->format; + if (priv->output == LVDS_OUTPUT_DUAL) + val |= LVDS_DUAL | LVDS_CH0_EN | LVDS_CH1_EN; + else if (priv->output == LVDS_OUTPUT_SINGLE) + val |= LVDS_CH0_EN; + else if (priv->output == LVDS_OUTPUT_RGB) + val |= LVDS_TTL_EN | LVDS_CH0_EN | LVDS_CH1_EN; + val |= (0xffff << 16); + rk_setreg(&priv->grf->soc_con7, val); + + /* Enable LVDS PHY */ + if (priv->output == LVDS_OUTPUT_RGB) { + lvds_writel(priv, RK3288_LVDS_CH0_REG0, + RK3288_LVDS_CH0_REG0_TTL_EN | + RK3288_LVDS_CH0_REG0_LANECK_EN | + RK3288_LVDS_CH0_REG0_LANE4_EN | + RK3288_LVDS_CH0_REG0_LANE3_EN | + RK3288_LVDS_CH0_REG0_LANE2_EN | + RK3288_LVDS_CH0_REG0_LANE1_EN | + RK3288_LVDS_CH0_REG0_LANE0_EN); + lvds_writel(priv, RK3288_LVDS_CH0_REG2, + RK3288_LVDS_PLL_FBDIV_REG2(0x46)); + + lvds_writel(priv, RK3288_LVDS_CH0_REG3, + RK3288_LVDS_PLL_FBDIV_REG3(0x46)); + lvds_writel(priv, RK3288_LVDS_CH0_REG4, + RK3288_LVDS_CH0_REG4_LANECK_TTL_MODE | + RK3288_LVDS_CH0_REG4_LANE4_TTL_MODE | + RK3288_LVDS_CH0_REG4_LANE3_TTL_MODE | + RK3288_LVDS_CH0_REG4_LANE2_TTL_MODE | + RK3288_LVDS_CH0_REG4_LANE1_TTL_MODE | + RK3288_LVDS_CH0_REG4_LANE0_TTL_MODE); + lvds_writel(priv, RK3288_LVDS_CH0_REG5, + RK3288_LVDS_CH0_REG5_LANECK_TTL_DATA | + RK3288_LVDS_CH0_REG5_LANE4_TTL_DATA | + RK3288_LVDS_CH0_REG5_LANE3_TTL_DATA | + RK3288_LVDS_CH0_REG5_LANE2_TTL_DATA | + RK3288_LVDS_CH0_REG5_LANE1_TTL_DATA | + RK3288_LVDS_CH0_REG5_LANE0_TTL_DATA); + lvds_writel(priv, RK3288_LVDS_CH0_REGD, + RK3288_LVDS_PLL_PREDIV_REGD(0x0a)); + lvds_writel(priv, RK3288_LVDS_CH0_REG20, + RK3288_LVDS_CH0_REG20_LSB); + } else { + lvds_writel(priv, RK3288_LVDS_CH0_REG0, + RK3288_LVDS_CH0_REG0_LVDS_EN | + RK3288_LVDS_CH0_REG0_LANECK_EN | + RK3288_LVDS_CH0_REG0_LANE4_EN | + RK3288_LVDS_CH0_REG0_LANE3_EN | + RK3288_LVDS_CH0_REG0_LANE2_EN | + RK3288_LVDS_CH0_REG0_LANE1_EN | + RK3288_LVDS_CH0_REG0_LANE0_EN); + lvds_writel(priv, RK3288_LVDS_CH0_REG1, + RK3288_LVDS_CH0_REG1_LANECK_BIAS | + RK3288_LVDS_CH0_REG1_LANE4_BIAS | + RK3288_LVDS_CH0_REG1_LANE3_BIAS | + RK3288_LVDS_CH0_REG1_LANE2_BIAS | + RK3288_LVDS_CH0_REG1_LANE1_BIAS | + RK3288_LVDS_CH0_REG1_LANE0_BIAS); + lvds_writel(priv, RK3288_LVDS_CH0_REG2, + RK3288_LVDS_CH0_REG2_RESERVE_ON | + RK3288_LVDS_CH0_REG2_LANECK_LVDS_MODE | + RK3288_LVDS_CH0_REG2_LANE4_LVDS_MODE | + RK3288_LVDS_CH0_REG2_LANE3_LVDS_MODE | + RK3288_LVDS_CH0_REG2_LANE2_LVDS_MODE | + RK3288_LVDS_CH0_REG2_LANE1_LVDS_MODE | + RK3288_LVDS_CH0_REG2_LANE0_LVDS_MODE | + RK3288_LVDS_PLL_FBDIV_REG2(0x46)); + lvds_writel(priv, RK3288_LVDS_CH0_REG3, + RK3288_LVDS_PLL_FBDIV_REG3(0x46)); + lvds_writel(priv, RK3288_LVDS_CH0_REG4, 0x00); + lvds_writel(priv, RK3288_LVDS_CH0_REG5, 0x00); + lvds_writel(priv, RK3288_LVDS_CH0_REGD, + RK3288_LVDS_PLL_PREDIV_REGD(0x0a)); + lvds_writel(priv, RK3288_LVDS_CH0_REG20, + RK3288_LVDS_CH0_REG20_LSB); + } + + /* Power on */ + writel(RK3288_LVDS_CFG_REGC_PLL_ENABLE, + priv->regs + RK3288_LVDS_CFG_REGC); + + writel(RK3288_LVDS_CFG_REG21_TX_ENABLE, + priv->regs + RK3288_LVDS_CFG_REG21); + + return 0; +} + +int rk_lvds_read_timing(struct udevice *dev, struct display_timing *timing) +{ + if (fdtdec_decode_display_timing + (gd->fdt_blob, dev->of_offset, 0, timing)) { + debug("%s: Failed to decode display timing\n", __func__); + return -EINVAL; + } + + return 0; +} + +static int rk_lvds_ofdata_to_platdata(struct udevice *dev) +{ + struct rk_lvds_priv *priv = dev_get_priv(dev); + const void *blob = gd->fdt_blob; + int node = dev->of_offset; + int ret; + priv->regs = (void *)dev_get_addr(dev); + priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF); + + ret = fdtdec_get_int(blob, node, "rockchip,output", -1); + if (ret != -1) { + priv->output = ret; + debug("LVDS output : %d\n", ret); + } else { + /* default set it as output rgb */ + priv->output = LVDS_OUTPUT_RGB; + } + + ret = fdtdec_get_int(blob, node, "rockchip,data-mapping", -1); + if (ret != -1) { + priv->format = ret; + debug("LVDS data-mapping : %d\n", ret); + } else { + /* default set it as format jeida */ + priv->format = LVDS_FORMAT_JEIDA; + } + + ret = fdtdec_get_int(blob, node, "rockchip,data-width", -1); + if (ret != -1) { + debug("LVDS data-width : %d\n", ret); + if (ret == 24) { + priv->format |= LVDS_24BIT; + } else if (ret == 18) { + priv->format |= LVDS_18BIT; + } else { + debug("rockchip-lvds unsupport data-width[%d]\n", ret); + ret = -EINVAL; + return ret; + } + } else { + priv->format |= LVDS_24BIT; + } + + return 0; +} + +int rk_lvds_probe(struct udevice *dev) +{ + struct rk_lvds_priv *priv = dev_get_priv(dev); + int ret; + + ret = uclass_get_device_by_phandle(UCLASS_PANEL, dev, "rockchip,panel", + &priv->panel); + if (ret) { + debug("%s: Cannot find panel for '%s' (ret=%d)\n", __func__, + dev->name, ret); + return ret; + } + + return 0; +} + +static const struct dm_display_ops lvds_rockchip_ops = { + .read_timing = rk_lvds_read_timing, + .enable = rk_lvds_enable, +}; + +static const struct udevice_id rockchip_lvds_ids[] = { + {.compatible = "rockchip,rk3288-lvds"}, + {} +}; + +U_BOOT_DRIVER(lvds_rockchip) = { + .name = "lvds_rockchip", + .id = UCLASS_DISPLAY, + .of_match = rockchip_lvds_ids, + .ops = &lvds_rockchip_ops, + .ofdata_to_platdata = rk_lvds_ofdata_to_platdata, + .probe = rk_lvds_probe, + .priv_auto_alloc_size = sizeof(struct rk_lvds_priv), +}; -- cgit From 8530783594f6de14ec6d4b7bf804437d6e1a4f5f Mon Sep 17 00:00:00 2001 From: Jacob Chen Date: Mon, 14 Mar 2016 11:20:18 +0800 Subject: rockchip: video: Add LVDS support in vop driver LVDS have a different display out mode, add code to get right flag. The vop_ip decide display device and the remote_vop_id decide which vop was being used. So we should use the remote_vop_id to set DCLK_VOP. Signed-off-by: Jacob Chen Acked-by: Simon Glass --- drivers/video/rockchip/rk_vop.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) (limited to 'drivers/video') diff --git a/drivers/video/rockchip/rk_vop.c b/drivers/video/rockchip/rk_vop.c index adbc68f936..a54af172ec 100644 --- a/drivers/video/rockchip/rk_vop.c +++ b/drivers/video/rockchip/rk_vop.c @@ -102,6 +102,7 @@ void rkvop_mode_set(struct rk3288_vop *regs, u32 hfront_porch = edid->hfront_porch.typ; u32 vfront_porch = edid->vfront_porch.typ; uint flags; + int mode_flags; switch (mode) { case VOP_MODE_HDMI: @@ -113,9 +114,20 @@ void rkvop_mode_set(struct rk3288_vop *regs, clrsetbits_le32(®s->sys_ctrl, M_ALL_OUT_EN, V_EDP_OUT_EN(1)); break; + case VOP_MODE_LVDS: + clrsetbits_le32(®s->sys_ctrl, M_ALL_OUT_EN, + V_RGB_OUT_EN(1)); + break; } - flags = V_DSP_OUT_MODE(15) | + if (mode == VOP_MODE_HDMI || mode == VOP_MODE_EDP) + /* RGBaaa */ + mode_flags = 15; + else + /* RGB888 */ + mode_flags = 0; + + flags = V_DSP_OUT_MODE(mode_flags) | V_DSP_HSYNC_POL(!!(edid->flags & DISPLAY_FLAGS_HSYNC_HIGH)) | V_DSP_VSYNC_POL(!!(edid->flags & DISPLAY_FLAGS_VSYNC_HIGH)); @@ -227,7 +239,7 @@ int rk_display_init(struct udevice *dev, ulong fbbase, ret = rkclk_get_clk(CLK_NEW, &clk); if (!ret) { - ret = clk_set_periph_rate(clk, DCLK_VOP0 + vop_id, + ret = clk_set_periph_rate(clk, DCLK_VOP0 + remote_vop_id, timing.pixelclock.typ); } if (ret) { -- cgit From 3cb4f25cc702db17455583599d0940c81337a17a Mon Sep 17 00:00:00 2001 From: Peng Fan Date: Wed, 9 Mar 2016 16:07:21 +0800 Subject: video: ipu: avoid overflow issue Multiplication, as "clk->parent->rate * 16" may overflow. So use do_div to avoid such issue. Signed-off-by: Peng Fan Signed-off-by: Sandor Yu Cc: Anatolij Gustschin Cc: Stefano Babic Cc: Fabio Estevam --- drivers/video/ipu_common.c | 73 ++++++++++++++++++++++++++++++++++------------ 1 file changed, 54 insertions(+), 19 deletions(-) (limited to 'drivers/video') diff --git a/drivers/video/ipu_common.c b/drivers/video/ipu_common.c index 9f85102915..36d4b23bfe 100644 --- a/drivers/video/ipu_common.c +++ b/drivers/video/ipu_common.c @@ -19,6 +19,7 @@ #include #include #include +#include #include "ipu.h" #include "ipu_regs.h" @@ -275,50 +276,84 @@ static inline void ipu_ch_param_set_buffer(uint32_t ch, int bufNum, static void ipu_pixel_clk_recalc(struct clk *clk) { - u32 div = __raw_readl(DI_BS_CLKGEN0(clk->id)); - if (div == 0) - clk->rate = 0; - else - clk->rate = (clk->parent->rate * 16) / div; + u32 div; + u64 final_rate = (unsigned long long)clk->parent->rate * 16; + + div = __raw_readl(DI_BS_CLKGEN0(clk->id)); + debug("read BS_CLKGEN0 div:%d, final_rate:%lld, prate:%ld\n", + div, final_rate, clk->parent->rate); + + clk->rate = 0; + if (div != 0) { + do_div(final_rate, div); + clk->rate = final_rate; + } } static unsigned long ipu_pixel_clk_round_rate(struct clk *clk, unsigned long rate) { - u32 div, div1; - u32 tmp; + u64 div, final_rate; + u32 remainder; + u64 parent_rate = (unsigned long long)clk->parent->rate * 16; + /* * Calculate divider * Fractional part is 4 bits, * so simply multiply by 2^4 to get fractional part. */ - tmp = (clk->parent->rate * 16); - div = tmp / rate; - + div = parent_rate; + remainder = do_div(div, rate); + /* Round the divider value */ + if (remainder > (rate / 2)) + div++; if (div < 0x10) /* Min DI disp clock divider is 1 */ div = 0x10; if (div & ~0xFEF) div &= 0xFF8; else { - div1 = div & 0xFE0; - if ((tmp/div1 - tmp/div) < rate / 4) - div = div1; - else - div &= 0xFF8; + /* Round up divider if it gets us closer to desired pix clk */ + if ((div & 0xC) == 0xC) { + div += 0x10; + div &= ~0xF; + } } - return (clk->parent->rate * 16) / div; + final_rate = parent_rate; + do_div(final_rate, div); + + return final_rate; } static int ipu_pixel_clk_set_rate(struct clk *clk, unsigned long rate) { - u32 div = (clk->parent->rate * 16) / rate; + u64 div, parent_rate; + u32 remainder; + + parent_rate = (unsigned long long)clk->parent->rate * 16; + div = parent_rate; + remainder = do_div(div, rate); + /* Round the divider value */ + if (remainder > (rate / 2)) + div++; + + /* Round up divider if it gets us closer to desired pix clk */ + if ((div & 0xC) == 0xC) { + div += 0x10; + div &= ~0xF; + } + if (div > 0x1000) + debug("Overflow, DI_BS_CLKGEN0 div:0x%x\n", (u32)div); __raw_writel(div, DI_BS_CLKGEN0(clk->id)); - /* Setup pixel clock timing */ + /* + * Setup pixel clock timing + * Down time is half of period + */ __raw_writel((div / 16) << 16, DI_BS_CLKGEN1(clk->id)); - clk->rate = (clk->parent->rate * 16) / div; + clk->rate = (u64)(clk->parent->rate * 16) / div; + return 0; } -- cgit