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rockchip: video: mipi: Add rk3288 soc specific driver for mipi dsi
Add rk3288 soc specific driver for mipi dsi. Signed-off-by: Eric Gao <eric.gao@rock-chips.com> Reviewed-by: Simon Glass <sjg@chromium.org> Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
This commit is contained in:
eric.gao@rock-chips.com
Anatolij Gustschin
parent
e9037fb3ad
commit
f680a91d5c
2 changed files with 192 additions and 1 deletions
191
drivers/video/rockchip/rk3288_mipi.c
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191
drivers/video/rockchip/rk3288_mipi.c
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/*
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* Copyright (c) 2017, Fuzhou Rockchip Electronics Co., Ltd
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* Author: Eric Gao <eric.gao@rock-chips.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <clk.h>
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#include <display.h>
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#include <dm.h>
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#include <fdtdec.h>
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#include <panel.h>
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#include <regmap.h>
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#include "rk_mipi.h"
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#include <syscon.h>
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#include <asm/gpio.h>
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#include <asm/hardware.h>
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#include <asm/io.h>
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#include <dm/uclass-internal.h>
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#include <linux/kernel.h>
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#include <asm/arch/clock.h>
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#include <asm/arch/cru_rk3288.h>
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#include <asm/arch/grf_rk3288.h>
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#include <asm/arch/rockchip_mipi_dsi.h>
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DECLARE_GLOBAL_DATA_PTR;
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#define MHz 1000000
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/* Select mipi dsi source, big or little vop */
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static int rk_mipi_dsi_source_select(struct udevice *dev)
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{
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struct rk_mipi_priv *priv = dev_get_priv(dev);
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struct rk3288_grf *grf = priv->grf;
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struct display_plat *disp_uc_plat = dev_get_uclass_platdata(dev);
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/* Select the video source */
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switch (disp_uc_plat->source_id) {
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case VOP_B:
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rk_clrsetreg(&grf->soc_con6, RK3288_DSI0_LCDC_SEL_MASK,
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RK3288_DSI0_LCDC_SEL_BIG
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<< RK3288_DSI0_LCDC_SEL_SHIFT);
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break;
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case VOP_L:
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rk_clrsetreg(&grf->soc_con6, RK3288_DSI0_LCDC_SEL_MASK,
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RK3288_DSI0_LCDC_SEL_LIT
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<< RK3288_DSI0_LCDC_SEL_SHIFT);
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break;
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default:
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debug("%s: Invalid VOP id\n", __func__);
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return -EINVAL;
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}
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return 0;
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}
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/* Setup mipi dphy working mode */
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static void rk_mipi_dphy_mode_set(struct udevice *dev)
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{
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struct rk_mipi_priv *priv = dev_get_priv(dev);
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struct rk3288_grf *grf = priv->grf;
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int val;
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/* Set Controller as TX mode */
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val = RK3288_DPHY_TX0_RXMODE_DIS << RK3288_DPHY_TX0_RXMODE_SHIFT;
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rk_clrsetreg(&grf->soc_con8, RK3288_DPHY_TX0_RXMODE_MASK, val);
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/* Exit tx stop mode */
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val |= RK3288_DPHY_TX0_TXSTOPMODE_EN
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<< RK3288_DPHY_TX0_TXSTOPMODE_SHIFT;
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rk_clrsetreg(&grf->soc_con8,
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RK3288_DPHY_TX0_TXSTOPMODE_MASK, val);
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/* Disable turnequest */
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val |= RK3288_DPHY_TX0_TURNREQUEST_EN
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<< RK3288_DPHY_TX0_TURNREQUEST_SHIFT;
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rk_clrsetreg(&grf->soc_con8,
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RK3288_DPHY_TX0_TURNREQUEST_MASK, val);
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}
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/*
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* This function is called by rk_display_init() using rk_mipi_dsi_enable() and
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* rk_mipi_phy_enable() to initialize mipi controller and dphy. If success,
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* enable backlight.
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*/
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static int rk_mipi_enable(struct udevice *dev, int panel_bpp,
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const struct display_timing *timing)
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{
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int ret;
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struct rk_mipi_priv *priv = dev_get_priv(dev);
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/* Fill the mipi controller parameter */
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priv->ref_clk = 24 * MHz;
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priv->sys_clk = priv->ref_clk;
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priv->pix_clk = timing->pixelclock.typ;
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priv->phy_clk = priv->pix_clk * 6;
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priv->txbyte_clk = priv->phy_clk / 8;
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priv->txesc_clk = 20 * MHz;
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/* Select vop port, big or little */
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rk_mipi_dsi_source_select(dev);
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/* Set mipi dphy work mode */
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rk_mipi_dphy_mode_set(dev);
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/* Config and enable mipi dsi according to timing */
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ret = rk_mipi_dsi_enable(dev, timing);
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if (ret) {
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debug("%s: rk_mipi_dsi_enable() failed (err=%d)\n",
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__func__, ret);
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return ret;
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}
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/* Config and enable mipi phy */
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ret = rk_mipi_phy_enable(dev);
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if (ret) {
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debug("%s: rk_mipi_phy_enable() failed (err=%d)\n",
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__func__, ret);
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return ret;
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}
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/* Enable backlight */
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ret = panel_enable_backlight(priv->panel);
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if (ret) {
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debug("%s: panel_enable_backlight() failed (err=%d)\n",
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__func__, ret);
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return ret;
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}
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return 0;
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}
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static int rk_mipi_ofdata_to_platdata(struct udevice *dev)
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{
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struct rk_mipi_priv *priv = dev_get_priv(dev);
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priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
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if (IS_ERR(priv->grf)) {
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debug("%s: Get syscon grf failed (ret=%p)\n",
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__func__, priv->grf);
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return -ENXIO;
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}
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priv->regs = dev_read_addr(dev);
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if (priv->regs == FDT_ADDR_T_NONE) {
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debug("%s: Get MIPI dsi address failed (ret=%lu)\n", __func__,
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priv->regs);
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return -ENXIO;
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}
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return 0;
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}
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/*
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* Probe function: check panel existence and readingit's timing. Then config
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* mipi dsi controller and enable it according to the timing parameter.
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*/
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static int rk_mipi_probe(struct udevice *dev)
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{
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int ret;
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struct rk_mipi_priv *priv = dev_get_priv(dev);
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ret = uclass_get_device_by_phandle(UCLASS_PANEL, dev, "rockchip,panel",
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&priv->panel);
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if (ret) {
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debug("%s: Can not find panel (err=%d)\n", __func__, ret);
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return ret;
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}
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return 0;
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}
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static const struct dm_display_ops rk_mipi_dsi_ops = {
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.read_timing = rk_mipi_read_timing,
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.enable = rk_mipi_enable,
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};
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static const struct udevice_id rk_mipi_dsi_ids[] = {
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{ .compatible = "rockchip,rk3288_mipi_dsi" },
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{ }
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};
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U_BOOT_DRIVER(rk_mipi_dsi) = {
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.name = "rk_mipi_dsi",
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.id = UCLASS_DISPLAY,
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.of_match = rk_mipi_dsi_ids,
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.ofdata_to_platdata = rk_mipi_ofdata_to_platdata,
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.probe = rk_mipi_probe,
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.ops = &rk_mipi_dsi_ops,
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.priv_auto_alloc_size = sizeof(struct rk_mipi_priv),
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};
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@ -8,7 +8,7 @@
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#define __RK_MIPI_H
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struct rk_mipi_priv {
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ulong regs;
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uintptr_t regs;
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void *grf;
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struct udevice *panel;
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struct mipi_dsi *dsi;
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