video:mipidsim:fdt: Add DT support for mipi dsim driver
This patch enables parsing mipi data from device tree. Non device tree case is still supported. Signed-off-by: Piotr Wilczek <p.wilczek@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
This commit is contained in:
Piotr Wilczek
Minkyu Kang
parent
b8dfcdb7d3
commit
de461c526e
@ -12,6 +12,7 @@
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#include <linux/list.h>
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#include <linux/fb.h>
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#include <lcd.h>
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#define PANEL_NAME_SIZE (32)
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@ -368,8 +369,12 @@ int exynos_mipi_dsi_register_lcd_device(struct mipi_dsim_lcd_device
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*lcd_dev);
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void exynos_set_dsim_platform_data(struct exynos_platform_mipi_dsim *pd);
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void exynos_init_dsim_platform_data(vidinfo_t *vid);
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/* panel driver init based on mipi dsi interface */
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void s6e8ax0_init(void);
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#ifdef CONFIG_OF_CONTROL
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extern int mipi_power(void);
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#endif
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#endif /* _DSIM_H */
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82
doc/device-tree-bindings/video/exynos_mipi_dsi.txt
Normal file
82
doc/device-tree-bindings/video/exynos_mipi_dsi.txt
Normal file
@ -0,0 +1,82 @@
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Exynos MIPI-DSIM Controller
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=========================
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Required properties:
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SOC specific:
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compatible: should be "samsung,exynos-mipi-dsi"
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reg: Base address of MIPI-DSIM IP.
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Board specific:
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samsung,dsim-config-e-interface: interface to be used (RGB interface
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for main display or CPU interface for main or sub display).
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samsung,dsim-config-e-virtual-ch: virtual channel number that main
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or sub display uses.
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samsung,dsim-config-e-pixel-format: pixel stream format for main
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or sub display.
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samsung,dsim-config-e-burst-mode: selects Burst mode in Video mode.
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in Non-burst mode, RGB data area is filled with RGB data and
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NULL packets, according to input bandwidth of RGB interface.
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samsung,dsim-config-e-no-data-lane: data lane count used by Master.
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samsung,dsim-config-e-byte-clk: select byte clock source.
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It must be DSIM_PLL_OUT_DIV8.
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DSIM_EXT_CLK_DIV8 and DSIM_EXT_CLK_BYPASSS are not supported.
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samsung,dsim-config-hfp: HFP disable mode.
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If set, DSI master ignores HFP area in VIDEO mode.
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In command mode, this variable is ignored.
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samsung,dsim-config-p: P value for PMS setting.
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samsung,dsim-config-m: M value for PMS setting.
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samsung,dsim-config-s: S value for PMS setting.
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samsung,dsim-config-pll-stable-time: the PLL Timer for stability
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of the ganerated clock.
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samsung,dsim-config-esc-clk: escape clock frequency for getting
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the escape clock prescaler value.
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samsung,dsim-config-stop-holding-cnt: the interval value between
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transmitting read packet (or write "set_tear_on" command)
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and BTA request. After transmitting read packet or write
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"set_tear_on" command, BTA requests to D-PHY automatically.
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This counter value specifies the interval between them.
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samsung,dsim-config-bta-timeout: the timer for BTA. This register
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specifies time out from BTA request to change the direction
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with respect to Tx escape clock.
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samsung,dsim-config-rx-timeout: the timer for LP Rx mode timeout.
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this register specifies time out on how long RxValid deasserts,
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after RxLpdt asserts with respect to Tx escape clock.
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- RxValid specifies Rx data valid indicator.
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- RxLpdt specifies an indicator that D-PHY is under RxLpdt mode
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- RxValid and RxLpdt specifies signal from D-PHY.
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samsung,dsim-device-name: name of the device.
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samsung,dsim-device-id: unique device id.
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samsung,dsim-device-bus_id: bus id for identifing connected bus
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and this bus id should be same as id of mipi_dsim_device.
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Optional properties:
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samsung,dsim-device-reverse-panel: reverse panel.
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Example:
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mipidsi@11c80000 {
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compatible = "samsung,exynos-mipi-dsi";
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reg = <0x11c80000 0x5c>;
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samsung,dsim-config-e-interface = <1>;
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samsung,dsim-config-e-virtual-ch = <0>;
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samsung,dsim-config-e-pixel-format = <7>;
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samsung,dsim-config-e-burst-mode = <1>;
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samsung,dsim-config-e-no-data-lane = <3>;
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samsung,dsim-config-e-byte-clk = <0>;
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samsung,dsim-config-hfp = <1>;
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samsung,dsim-config-p = <3>;
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samsung,dsim-config-m = <120>;
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samsung,dsim-config-s = <1>;
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samsung,dsim-config-pll-stable-time = <500>;
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samsung,dsim-config-esc-clk = <20000000>;
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samsung,dsim-config-stop-holding-cnt = <0x7ff>;
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samsung,dsim-config-bta-timeout = <0xff>;
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samsung,dsim-config-rx-timeout = <0xffff>;
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samsung,dsim-device-id = <0xffffffff>;
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samsung,dsim-device-bus-id = <0>;
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samsung,dsim-device-reverse-panel = <1>;
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};
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@ -9,6 +9,8 @@
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#include <common.h>
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#include <malloc.h>
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#include <fdtdec.h>
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#include <libfdt.h>
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#include <linux/err.h>
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#include <asm/arch/dsim.h>
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#include <asm/arch/mipi_dsim.h>
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@ -22,7 +24,14 @@
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#define master_to_driver(a) (a->dsim_lcd_drv)
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#define master_to_device(a) (a->dsim_lcd_dev)
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DECLARE_GLOBAL_DATA_PTR;
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static struct exynos_platform_mipi_dsim *dsim_pd;
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#ifdef CONFIG_OF_CONTROL
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static struct mipi_dsim_config dsim_config_dt;
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static struct exynos_platform_mipi_dsim dsim_platform_data_dt;
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static struct mipi_dsim_lcd_device mipi_lcd_device_dt;
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#endif
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struct mipi_dsim_ddi {
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int bus_id;
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@ -238,3 +247,90 @@ void exynos_set_dsim_platform_data(struct exynos_platform_mipi_dsim *pd)
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dsim_pd = pd;
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}
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#ifdef CONFIG_OF_CONTROL
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int exynos_dsim_config_parse_dt(const void *blob)
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{
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int node;
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node = fdtdec_next_compatible(blob, 0, COMPAT_SAMSUNG_EXYNOS_MIPI_DSI);
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if (node <= 0) {
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printf("exynos_mipi_dsi: Can't get device node for mipi dsi\n");
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return -ENODEV;
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}
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dsim_config_dt.e_interface = fdtdec_get_int(blob, node,
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"samsung,dsim-config-e-interface", 0);
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dsim_config_dt.e_virtual_ch = fdtdec_get_int(blob, node,
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"samsung,dsim-config-e-virtual-ch", 0);
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dsim_config_dt.e_pixel_format = fdtdec_get_int(blob, node,
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"samsung,dsim-config-e-pixel-format", 0);
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dsim_config_dt.e_burst_mode = fdtdec_get_int(blob, node,
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"samsung,dsim-config-e-burst-mode", 0);
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dsim_config_dt.e_no_data_lane = fdtdec_get_int(blob, node,
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"samsung,dsim-config-e-no-data-lane", 0);
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dsim_config_dt.e_byte_clk = fdtdec_get_int(blob, node,
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"samsung,dsim-config-e-byte-clk", 0);
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dsim_config_dt.hfp = fdtdec_get_int(blob, node,
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"samsung,dsim-config-hfp", 0);
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dsim_config_dt.p = fdtdec_get_int(blob, node,
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"samsung,dsim-config-p", 0);
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dsim_config_dt.m = fdtdec_get_int(blob, node,
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"samsung,dsim-config-m", 0);
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dsim_config_dt.s = fdtdec_get_int(blob, node,
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"samsung,dsim-config-s", 0);
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dsim_config_dt.pll_stable_time = fdtdec_get_int(blob, node,
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"samsung,dsim-config-pll-stable-time", 0);
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dsim_config_dt.esc_clk = fdtdec_get_int(blob, node,
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"samsung,dsim-config-esc-clk", 0);
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dsim_config_dt.stop_holding_cnt = fdtdec_get_int(blob, node,
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"samsung,dsim-config-stop-holding-cnt", 0);
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dsim_config_dt.bta_timeout = fdtdec_get_int(blob, node,
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"samsung,dsim-config-bta-timeout", 0);
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dsim_config_dt.rx_timeout = fdtdec_get_int(blob, node,
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"samsung,dsim-config-rx-timeout", 0);
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mipi_lcd_device_dt.name = fdtdec_get_config_string(blob,
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"samsung,dsim-device-name");
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mipi_lcd_device_dt.id = fdtdec_get_int(blob, node,
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"samsung,dsim-device-id", 0);
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mipi_lcd_device_dt.bus_id = fdtdec_get_int(blob, node,
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"samsung,dsim-device-bus_id", 0);
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mipi_lcd_device_dt.reverse_panel = fdtdec_get_int(blob, node,
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"samsung,dsim-device-reverse-panel", 0);
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return 0;
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}
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void exynos_init_dsim_platform_data(vidinfo_t *vid)
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{
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if (exynos_dsim_config_parse_dt(gd->fdt_blob))
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debug("Can't get proper dsim config.\n");
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strcpy(dsim_platform_data_dt.lcd_panel_name, mipi_lcd_device_dt.name);
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dsim_platform_data_dt.dsim_config = &dsim_config_dt;
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dsim_platform_data_dt.mipi_power = mipi_power;
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dsim_platform_data_dt.phy_enable = set_mipi_phy_ctrl;
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dsim_platform_data_dt.lcd_panel_info = (void *)vid;
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mipi_lcd_device_dt.platform_data = (void *)&dsim_platform_data_dt;
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exynos_mipi_dsi_register_lcd_device(&mipi_lcd_device_dt);
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dsim_pd = &dsim_platform_data_dt;
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}
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#endif
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@ -79,6 +79,7 @@ enum fdt_compat_id {
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COMPAT_SAMSUNG_EXYNOS5_USB3_PHY,/* Exynos phy controller for usb3.0 */
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COMPAT_SAMSUNG_EXYNOS_TMU, /* Exynos TMU */
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COMPAT_SAMSUNG_EXYNOS_FIMD, /* Exynos Display controller */
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COMPAT_SAMSUNG_EXYNOS_MIPI_DSI, /* Exynos mipi dsi */
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COMPAT_SAMSUNG_EXYNOS5_DP, /* Exynos Display port controller */
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COMPAT_SAMSUNG_EXYNOS5_DWMMC, /* Exynos5 DWMMC controller */
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COMPAT_SAMSUNG_EXYNOS_SERIAL, /* Exynos UART */
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@ -52,6 +52,7 @@ static const char * const compat_names[COMPAT_COUNT] = {
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COMPAT(SAMSUNG_EXYNOS5_USB3_PHY, "samsung,exynos5250-usb3-phy"),
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COMPAT(SAMSUNG_EXYNOS_TMU, "samsung,exynos-tmu"),
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COMPAT(SAMSUNG_EXYNOS_FIMD, "samsung,exynos-fimd"),
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COMPAT(SAMSUNG_EXYNOS_MIPI_DSI, "samsung,exynos-mipi-dsi"),
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COMPAT(SAMSUNG_EXYNOS5_DP, "samsung,exynos5-dp"),
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COMPAT(SAMSUNG_EXYNOS5_DWMMC, "samsung,exynos5250-dwmmc"),
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COMPAT(SAMSUNG_EXYNOS_SERIAL, "samsung,exynos4210-uart"),
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