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Commit 4c0403e0 authored by Lei Chen's avatar Lei Chen Committed by Gerrit - the friendly Code Review server
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msm: mdss: Add SPI display driver 



Add SPI display driver for handle IOCTLs from usespace and kickoff
display pixels data.

Change-Id: I24b9215df439f30de5aa7f510ce09014739ccb78
Signed-off-by: default avatarLei Chen <chenlei@codeaurora.org>
parent f0d55498

Documentation/devicetree/bindings/fb/mdss-spi-display.txt

0 → 100644
+24 −0
Original line number Diff line number Diff line 
Qualcomm Technologies, Inc. mdss-spi-display



mdss-spi-display is a spi interface display which support send frame

data and command to panel, compatible with SPI interface specification.



Required properties:

- compatible:		Must be "qcom,mdss-spi-display"

- qcom,mdss-fb-map:	pHandle that specifies the framebuffer to which the

			interface is mapped.



Optional properties:

- label:		A string used to describe the controller used.



Example:

mdss_spi_display: qcom,mdss_spi_display {

	compatible = "qcom,mdss-spi-display";

	label = "mdss spi display";



	mdss_fb0: qcom,mdss_fb_primary {

		cell-index = <0>;

		compatible = "qcom,mdss-fb";

	};

};

drivers/video/fbdev/msm/Kconfig

+9 −0
Original line number Diff line number Diff line
@@ -82,6 +82,15 @@ config FB_MSM_MDSS_HDMI_MHL_SII8334 
	MHL (Mobile High-Definition Link) technology

	uses USB connector to output HDMI content



config FB_MSM_MDSS_SPI_PANEL

	depends on SPI_QUP

	bool "Support SPI panel feature"

	---help---

	The MDSS SPI Panel provides support for transmittimg SPI signals of

	MDSS frame buffer data to connected panel. Limited by SPI clock rate,

	the current max fps only reach to ~30 fps with 240x240 resolution, and

	limited by MDP hardware architecture only supply GPU compostition.



config FB_MSM_MDSS_MHL3

	depends on FB_MSM_MDSS_HDMI_PANEL

	bool "MHL3 SII8620 Support"

drivers/video/fbdev/msm/Makefile

+4 −0
Original line number Diff line number Diff line
@@ -64,6 +64,10 @@ obj-$(CONFIG_FB_MSM_MDSS_HDMI_MHL_SII8334) += mhl_sii8334.o mhl_msc.o 
ccflags-y += -DTARGET_HW_MDSS_HDMI

endif



obj-$(CONFIG_FB_MSM_MDSS_SPI_PANEL) += mdss_spi_display.o

obj-$(CONFIG_FB_MSM_MDSS_SPI_PANEL) += mdss_spi_client.o

obj-$(CONFIG_FB_MSM_MDSS_SPI_PANEL) += mdss_spi_panel.o



obj-$(CONFIG_FB_MSM_MDSS_WRITEBACK) += mdss_wb.o



mdss-qpic-objs := mdss_qpic.o mdss_fb.o mdss_qpic_panel.o mdss_sync.o

drivers/video/fbdev/msm/mdss_fb.c

+23 −2
Original line number Diff line number Diff line
@@ -362,6 +362,9 @@ static ssize_t mdss_fb_get_type(struct device *dev, 
	case EDP_PANEL:

		ret = snprintf(buf, PAGE_SIZE, "edp panel\n");

		break;

	case SPI_PANEL:

		ret = snprintf(buf, PAGE_SIZE, "spi panel\n");

		break;

	default:

		ret = snprintf(buf, PAGE_SIZE, "unknown panel\n");

		break;
@@ -1278,6 +1281,9 @@ static int mdss_fb_probe(struct platform_device *pdev) 


	mfd->pdev = pdev;



	if (mfd->panel.type == SPI_PANEL)

		mfd->fb_imgType = MDP_RGB_565;



	mfd->split_fb_left = mfd->split_fb_right = 0;



	mdss_fb_set_split_mode(mfd, pdata);
@@ -2122,8 +2128,9 @@ void mdss_fb_free_fb_ion_memory(struct msm_fb_data_type *mfd) 


	dma_buf_end_cpu_access(mfd->fbmem_buf, DMA_BIDIRECTIONAL);



	if (mfd->mdp.fb_mem_get_iommu_domain && !(!mfd->fb_attachment ||

		!mfd->fb_attachment->dmabuf ||

	if ((mfd->mdp.fb_mem_get_iommu_domain ||

		(mfd->panel.type == SPI_PANEL)) &&

		!(!mfd->fb_attachment || !mfd->fb_attachment->dmabuf ||

		!mfd->fb_attachment->dmabuf->ops)) {

		dma_buf_unmap_attachment(mfd->fb_attachment, mfd->fb_table,

				DMA_BIDIRECTIONAL);
@@ -2168,6 +2175,20 @@ int mdss_fb_alloc_fb_ion_memory(struct msm_fb_data_type *mfd, size_t fb_size) 
			goto err_put;

		}



		mfd->fb_table = dma_buf_map_attachment(mfd->fb_attachment,

				DMA_BIDIRECTIONAL);

		if (IS_ERR(mfd->fb_table)) {

			rc = PTR_ERR(mfd->fb_table);

			goto err_detach;

		}

	} else if (mfd->panel.type == SPI_PANEL) {

		mfd->fb_attachment = dma_buf_attach(mfd->fbmem_buf,

				&mfd->pdev->dev);

		if (IS_ERR(mfd->fb_attachment)) {

			rc = PTR_ERR(mfd->fb_attachment);

			goto err_put;

		}



		mfd->fb_table = dma_buf_map_attachment(mfd->fb_attachment,

			DMA_BIDIRECTIONAL);

		if (IS_ERR(mfd->fb_table)) {

drivers/video/fbdev/msm/mdss_panel.h

+10 −0
Original line number Diff line number Diff line
@@ -60,6 +60,7 @@ enum fps_resolution { 
#define WRITEBACK_PANEL		10	/* Wifi display */

#define LVDS_PANEL		11	/* LVDS */

#define EDP_PANEL		12	/* LVDS */

#define SPI_PANEL               13	/* SPI */



#define DSC_PPS_LEN		128
@@ -108,6 +109,7 @@ enum { 
	MDSS_PANEL_INTF_DSI,

	MDSS_PANEL_INTF_EDP,

	MDSS_PANEL_INTF_HDMI,

	MDSS_PANEL_INTF_SPI,

};



enum {
@@ -429,6 +431,10 @@ struct edp_panel_info { 
	char frame_rate;	/* fps */

};



struct spi_panel_info {

	char frame_rate;	/* fps */

};



/**

 * struct dynamic_fps_data - defines dynamic fps related data

 * @hfp: horizontal front porch
@@ -741,6 +747,7 @@ struct mdss_panel_info { 
	struct mipi_panel_info mipi;

	struct lvds_panel_info lvds;

	struct edp_panel_info edp;

	struct spi_panel_info spi;



	bool is_dba_panel;
@@ -877,6 +884,9 @@ static inline u32 mdss_panel_get_framerate(struct mdss_panel_info *panel_info, 
			frame_rate = panel_info->lcdc.frame_rate;

			break;

		}

	case SPI_PANEL:

		frame_rate = panel_info->spi.frame_rate;

		break;

	default:

		pixel_total = (panel_info->lcdc.h_back_porch +

			  panel_info->lcdc.h_front_porch +