Hi Eric,
On 16 June 2017 at 02:52, Eric Gao eric.gao@rock-chips.com wrote:
Add rk3288 soc specific driver for mipi dsi.
Signed-off-by: Eric Gao eric.gao@rock-chips.com
drivers/video/rockchip/rk3288_mipi.c | 191 +++++++++++++++++++++++++++++++++++ 1 file changed, 191 insertions(+) create mode 100644 drivers/video/rockchip/rk3288_mipi.c
diff --git a/drivers/video/rockchip/rk3288_mipi.c b/drivers/video/rockchip/rk3288_mipi.c new file mode 100644 index 0000000..34f2aef --- /dev/null +++ b/drivers/video/rockchip/rk3288_mipi.c @@ -0,0 +1,191 @@ +/*
- Copyright (c) 2017, Fuzhou Rockchip Electronics Co., Ltd
- Author: Eric Gao eric.gao@rock-chips.com
- SPDX-License-Identifier: GPL-2.0+
- */
+#include <common.h> +#include <clk.h> +#include <display.h> +#include <dm.h> +#include <fdtdec.h> +#include <panel.h> +#include <regmap.h> +#include "rk_mipi.h" +#include <syscon.h> +#include <asm/gpio.h> +#include <asm/hardware.h> +#include <asm/io.h> +#include <dm/uclass-internal.h> +#include <linux/kernel.h> +#include <asm/arch/clock.h> +#include <asm/arch/cru_rk3288.h> +#include <asm/arch/grf_rk3288.h> +#include <asm/arch/rockchip_mipi_dsi.h>
+DECLARE_GLOBAL_DATA_PTR;
+#define MHz 1000000
+/* Select mipi dsi source, big or little vop */ +static int rk_mipi_dsi_source_select(struct udevice *dev) +{
struct rk_mipi_priv *priv = dev_get_priv(dev);struct rk3288_grf *grf = priv->grf;struct display_plat *disp_uc_plat = dev_get_uclass_platdata(dev);/* Select the video source */switch (disp_uc_plat->source_id) {case VOP_B:rk_clrsetreg(&grf->soc_con6, RK3288_DSI0_LCDC_SEL_MASK,RK3288_DSI0_LCDC_SEL_BIG<< RK3288_DSI0_LCDC_SEL_SHIFT);break;case VOP_L:rk_clrsetreg(&grf->soc_con6, RK3288_DSI0_LCDC_SEL_MASK,RK3288_DSI0_LCDC_SEL_LIT<< RK3288_DSI0_LCDC_SEL_SHIFT);break;default:debug("%s: Invalid VOP id\n", __func__);return -EINVAL;}return 0;+}
+/* Setup mipi dphy working mode */ +static void rk_mipi_dphy_mode_set(struct udevice *dev) +{
struct rk_mipi_priv *priv = dev_get_priv(dev);struct rk3288_grf *grf = priv->grf;int val;/* Set Controller as TX mode */val = RK3288_DPHY_TX0_RXMODE_DIS << RK3288_DPHY_TX0_RXMODE_SHIFT;rk_clrsetreg(&grf->soc_con8, RK3288_DPHY_TX0_RXMODE_MASK, val);/* Exit tx stop mode */val |= RK3288_DPHY_TX0_TXSTOPMODE_EN<< RK3288_DPHY_TX0_TXSTOPMODE_SHIFT;rk_clrsetreg(&grf->soc_con8,RK3288_DPHY_TX0_TXSTOPMODE_MASK, val);/* Disable turnequest */val |= RK3288_DPHY_TX0_TURNREQUEST_EN<< RK3288_DPHY_TX0_TURNREQUEST_SHIFT;rk_clrsetreg(&grf->soc_con8,RK3288_DPHY_TX0_TURNREQUEST_MASK, val);+}
+/*
- This function is called by rk_display_init() using rk_mipi_dsi_enable() and
- rk_mipi_phy_enable() to initialize mipi controller and dphy. If success,
- enable backlight.
- */
+static int rk_display_enable(struct udevice *dev, int panel_bpp,
const struct display_timing *timing)
How about calling this rk_mipi_enable()?
+{
int ret;struct rk_mipi_priv *priv = dev_get_priv(dev);/* Fill the mipi controller parameter */priv->ref_clk = 24 * MHz;priv->sys_clk = priv->ref_clk;priv->pix_clk = timing->pixelclock.typ;priv->phy_clk = priv->pix_clk * 6;priv->txbyte_clk = priv->phy_clk / 8;priv->txesc_clk = 20 * MHz;/* Select vop port, big or little */rk_mipi_dsi_source_select(dev);/* Set mipi dphy work mode */rk_mipi_dphy_mode_set(dev);/* Config and enable mipi dsi according to timing */ret = rk_mipi_dsi_enable(dev, timing);if (ret) {debug("%s: rk_mipi_dsi_enable() failed (err=%d)\n",__func__, ret);return ret;}/* Config and enable mipi phy */ret = rk_mipi_phy_enable(dev);if (ret) {debug("%s: rk_mipi_phy_enable() failed (err=%d)\n",__func__, ret);return ret;}/* Enable backlight */ret = panel_enable_backlight(priv->panel);if (ret) {debug("%s: panel_enable_backlight() failed (err=%d)\n",__func__, ret);return ret;}return 0;+}
+static int rk_mipi_ofdata_to_platdata(struct udevice *dev) +{
struct rk_mipi_priv *priv = dev_get_priv(dev);priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);if (priv->grf <= 0) {
if (IS_ERR(priv->grf))
debug("%s: Get syscon grf failed (ret=%p)\n",__func__, priv->grf);return -ENXIO;}priv->regs = (void *)devfdt_get_addr(dev);
dev_read_addr(dev)
if (priv->regs <= 0) {
This actually returns FDT_ADDR_T_NONE if there is no address.
debug("%s: Get MIPI dsi address failed (ret=%p)\n", __func__,priv->regs);return -ENXIO;}return 0;+}
+/*
- Probe function: check panel existence and readingit's timing. Then config
- mipi dsi controller and enable it according to the timing parameter.
- */
+static int rk_mipi_probe(struct udevice *dev) +{
int ret;struct rk_mipi_priv *priv = dev_get_priv(dev);ret = uclass_get_device_by_phandle(UCLASS_PANEL, dev, "rockchip,panel",&priv->panel);if (ret) {debug("%s: Can not find panel (err=%d)\n", __func__, ret);return ret;}return 0;+}
+static const struct dm_display_ops rk_mipi_dsi_ops = {
.read_timing = rk_mipi_read_timing,.enable = rk_display_enable,+};
+static const struct udevice_id rk_mipi_dsi_ids[] = {
{ .compatible = "rockchip,rk3288_mipi_dsi" },{ }+};
+U_BOOT_DRIVER(rk_mipi_dsi) = {
.name = "rk_mipi_dsi",.id = UCLASS_DISPLAY,.of_match = rk_mipi_dsi_ids,.ofdata_to_platdata = rk_mipi_ofdata_to_platdata,.probe = rk_mipi_probe,.ops = &rk_mipi_dsi_ops,.priv_auto_alloc_size = sizeof(struct rk_mipi_priv),+};
1.9.1
Regards, Simon