| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Linus Walleij | 1254 | 100.00% | 8 | 100.00% |
| Total | 1254 | 8 |
#include <linux/amba/clcd-regs.h> #include <linux/device.h> #include <linux/of.h> #include <linux/of_platform.h> #include <linux/regmap.h> #include <linux/mfd/syscon.h> #include <linux/bitops.h> #include <linux/module.h> #include <drm/drmP.h> #include "pl111_versatile.h" #include "pl111_vexpress.h" #include "pl111_drm.h" static struct regmap *versatile_syscon_map; /* * We detect the different syscon types from the compatible strings. */ enum versatile_clcd { INTEGRATOR_CLCD_CM, VERSATILE_CLCD, REALVIEW_CLCD_EB, REALVIEW_CLCD_PB1176, REALVIEW_CLCD_PB11MP, REALVIEW_CLCD_PBA8, REALVIEW_CLCD_PBX, VEXPRESS_CLCD_V2M, }; static const struct of_device_id versatile_clcd_of_match[] = { { .compatible = "arm,core-module-integrator", .data = (void *)INTEGRATOR_CLCD_CM, }, { .compatible = "arm,versatile-sysreg", .data = (void *)VERSATILE_CLCD, }, { .compatible = "arm,realview-eb-syscon", .data = (void *)REALVIEW_CLCD_EB, }, { .compatible = "arm,realview-pb1176-syscon", .data = (void *)REALVIEW_CLCD_PB1176, }, { .compatible = "arm,realview-pb11mp-syscon", .data = (void *)REALVIEW_CLCD_PB11MP, }, { .compatible = "arm,realview-pba8-syscon", .data = (void *)REALVIEW_CLCD_PBA8, }, { .compatible = "arm,realview-pbx-syscon", .data = (void *)REALVIEW_CLCD_PBX, }, { .compatible = "arm,vexpress-muxfpga", .data = (void *)VEXPRESS_CLCD_V2M, }, {}, }; /* * Core module CLCD control on the Integrator/CP, bits * 8 thru 19 of the CM_CONTROL register controls a bunch * of CLCD settings. */ #define INTEGRATOR_HDR_CTRL_OFFSET 0x0C #define INTEGRATOR_CLCD_LCDBIASEN BIT(8) #define INTEGRATOR_CLCD_LCDBIASUP BIT(9) #define INTEGRATOR_CLCD_LCDBIASDN BIT(10) /* Bits 11,12,13 controls the LCD or VGA bridge type */ #define INTEGRATOR_CLCD_LCDMUX_LCD24 BIT(11) #define INTEGRATOR_CLCD_LCDMUX_SHARP (BIT(11)|BIT(12)) #define INTEGRATOR_CLCD_LCDMUX_VGA555 BIT(13) #define INTEGRATOR_CLCD_LCDMUX_VGA24 (BIT(11)|BIT(12)|BIT(13)) #define INTEGRATOR_CLCD_LCD0_EN BIT(14) #define INTEGRATOR_CLCD_LCD1_EN BIT(15) /* R/L flip on Sharp */ #define INTEGRATOR_CLCD_LCD_STATIC1 BIT(16) /* U/D flip on Sharp */ #define INTEGRATOR_CLCD_LCD_STATIC2 BIT(17) /* No connection on Sharp */ #define INTEGRATOR_CLCD_LCD_STATIC BIT(18) /* 0 = 24bit VGA, 1 = 18bit VGA */ #define INTEGRATOR_CLCD_LCD_N24BITEN BIT(19) #define INTEGRATOR_CLCD_MASK GENMASK(19, 8) static void pl111_integrator_enable(struct drm_device *drm, u32 format) { u32 val; dev_info(drm->dev, "enable Integrator CLCD connectors\n"); /* FIXME: really needed? */ val = INTEGRATOR_CLCD_LCD_STATIC1 | INTEGRATOR_CLCD_LCD_STATIC2 | INTEGRATOR_CLCD_LCD0_EN | INTEGRATOR_CLCD_LCD1_EN; switch (format) { case DRM_FORMAT_XBGR8888: case DRM_FORMAT_XRGB8888: /* 24bit formats */ val |= INTEGRATOR_CLCD_LCDMUX_VGA24; break; case DRM_FORMAT_XBGR1555: case DRM_FORMAT_XRGB1555: /* Pseudocolor, RGB555, BGR555 */ val |= INTEGRATOR_CLCD_LCDMUX_VGA555; break; default: dev_err(drm->dev, "unhandled format on Integrator 0x%08x\n", format); break; } regmap_update_bits(versatile_syscon_map, INTEGRATOR_HDR_CTRL_OFFSET, INTEGRATOR_CLCD_MASK, val); } /* * This configuration register in the Versatile and RealView * family is uniformly present but appears more and more * unutilized starting with the RealView series. */ #define SYS_CLCD 0x50 #define SYS_CLCD_MODE_MASK (BIT(0)|BIT(1)) #define SYS_CLCD_MODE_888 0 #define SYS_CLCD_MODE_5551 BIT(0) #define SYS_CLCD_MODE_565_R_LSB BIT(1) #define SYS_CLCD_MODE_565_B_LSB (BIT(0)|BIT(1)) #define SYS_CLCD_CONNECTOR_MASK (BIT(2)|BIT(3)|BIT(4)|BIT(5)) #define SYS_CLCD_NLCDIOON BIT(2) #define SYS_CLCD_VDDPOSSWITCH BIT(3) #define SYS_CLCD_PWR3V5SWITCH BIT(4) #define SYS_CLCD_VDDNEGSWITCH BIT(5) static void pl111_versatile_disable(struct drm_device *drm) { dev_info(drm->dev, "disable Versatile CLCD connectors\n"); regmap_update_bits(versatile_syscon_map, SYS_CLCD, SYS_CLCD_CONNECTOR_MASK, 0); } static void pl111_versatile_enable(struct drm_device *drm, u32 format) { u32 val = 0; dev_info(drm->dev, "enable Versatile CLCD connectors\n"); switch (format) { case DRM_FORMAT_ABGR8888: case DRM_FORMAT_XBGR8888: case DRM_FORMAT_ARGB8888: case DRM_FORMAT_XRGB8888: val |= SYS_CLCD_MODE_888; break; case DRM_FORMAT_BGR565: val |= SYS_CLCD_MODE_565_R_LSB; break; case DRM_FORMAT_RGB565: val |= SYS_CLCD_MODE_565_B_LSB; break; case DRM_FORMAT_ABGR1555: case DRM_FORMAT_XBGR1555: case DRM_FORMAT_ARGB1555: case DRM_FORMAT_XRGB1555: val |= SYS_CLCD_MODE_5551; break; default: dev_err(drm->dev, "unhandled format on Versatile 0x%08x\n", format); break; } /* Set up the MUX */ regmap_update_bits(versatile_syscon_map, SYS_CLCD, SYS_CLCD_MODE_MASK, val); /* Then enable the display */ regmap_update_bits(versatile_syscon_map, SYS_CLCD, SYS_CLCD_CONNECTOR_MASK, SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH); } static void pl111_realview_clcd_disable(struct drm_device *drm) { dev_info(drm->dev, "disable RealView CLCD connectors\n"); regmap_update_bits(versatile_syscon_map, SYS_CLCD, SYS_CLCD_CONNECTOR_MASK, 0); } static void pl111_realview_clcd_enable(struct drm_device *drm, u32 format) { dev_info(drm->dev, "enable RealView CLCD connectors\n"); regmap_update_bits(versatile_syscon_map, SYS_CLCD, SYS_CLCD_CONNECTOR_MASK, SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH); } /* PL110 pixel formats for Integrator, vanilla PL110 */ static const u32 pl110_integrator_pixel_formats[] = { DRM_FORMAT_ABGR8888, DRM_FORMAT_XBGR8888, DRM_FORMAT_ARGB8888, DRM_FORMAT_XRGB8888, DRM_FORMAT_ABGR1555, DRM_FORMAT_XBGR1555, DRM_FORMAT_ARGB1555, DRM_FORMAT_XRGB1555, }; /* Extended PL110 pixel formats for Integrator and Versatile */ static const u32 pl110_versatile_pixel_formats[] = { DRM_FORMAT_ABGR8888, DRM_FORMAT_XBGR8888, DRM_FORMAT_ARGB8888, DRM_FORMAT_XRGB8888, DRM_FORMAT_BGR565, /* Uses external PLD */ DRM_FORMAT_RGB565, /* Uses external PLD */ DRM_FORMAT_ABGR1555, DRM_FORMAT_XBGR1555, DRM_FORMAT_ARGB1555, DRM_FORMAT_XRGB1555, }; static const u32 pl111_realview_pixel_formats[] = { DRM_FORMAT_ABGR8888, DRM_FORMAT_XBGR8888, DRM_FORMAT_ARGB8888, DRM_FORMAT_XRGB8888, DRM_FORMAT_BGR565, DRM_FORMAT_RGB565, DRM_FORMAT_ABGR1555, DRM_FORMAT_XBGR1555, DRM_FORMAT_ARGB1555, DRM_FORMAT_XRGB1555, DRM_FORMAT_ABGR4444, DRM_FORMAT_XBGR4444, DRM_FORMAT_ARGB4444, DRM_FORMAT_XRGB4444, }; /* * The Integrator variant is a PL110 with a bunch of broken, or not * yet implemented features */ static const struct pl111_variant_data pl110_integrator = { .name = "PL110 Integrator", .is_pl110 = true, .broken_clockdivider = true, .broken_vblank = true, .formats = pl110_integrator_pixel_formats, .nformats = ARRAY_SIZE(pl110_integrator_pixel_formats), .fb_bpp = 16, }; /* * This is the in-between PL110 variant found in the ARM Versatile, * supporting RGB565/BGR565 */ static const struct pl111_variant_data pl110_versatile = { .name = "PL110 Versatile", .is_pl110 = true, .external_bgr = true, .formats = pl110_versatile_pixel_formats, .nformats = ARRAY_SIZE(pl110_versatile_pixel_formats), .fb_bpp = 16, }; /* * RealView PL111 variant, the only real difference from the vanilla * PL111 is that we select 16bpp framebuffer by default to be able * to get 1024x768 without saturating the memory bus. */ static const struct pl111_variant_data pl111_realview = { .name = "PL111 RealView", .formats = pl111_realview_pixel_formats, .nformats = ARRAY_SIZE(pl111_realview_pixel_formats), .fb_bpp = 16, }; /* * Versatile Express PL111 variant, again we just push the maximum * BPP to 16 to be able to get 1024x768 without saturating the memory * bus. The clockdivider also seems broken on the Versatile Express. */ static const struct pl111_variant_data pl111_vexpress = { .name = "PL111 Versatile Express", .formats = pl111_realview_pixel_formats, .nformats = ARRAY_SIZE(pl111_realview_pixel_formats), .fb_bpp = 16, .broken_clockdivider = true, }; int pl111_versatile_init(struct device *dev, struct pl111_drm_dev_private *priv) { const struct of_device_id *clcd_id; enum versatile_clcd versatile_clcd_type; struct device_node *np; struct regmap *map; int ret; np = of_find_matching_node_and_match(NULL, versatile_clcd_of_match, &clcd_id); if (!np) { /* Non-ARM reference designs, just bail out */ return 0; } versatile_clcd_type = (enum versatile_clcd)clcd_id->data; /* Versatile Express special handling */ if (versatile_clcd_type == VEXPRESS_CLCD_V2M) { struct platform_device *pdev; /* Registers a driver for the muxfpga */ ret = vexpress_muxfpga_init(); if (ret) { dev_err(dev, "unable to initialize muxfpga driver\n"); return ret; } /* Call into deep Vexpress configuration API */ pdev = of_find_device_by_node(np); if (!pdev) { dev_err(dev, "can't find the sysreg device, deferring\n"); return -EPROBE_DEFER; } map = dev_get_drvdata(&pdev->dev); if (!map) { dev_err(dev, "sysreg has not yet probed\n"); platform_device_put(pdev); return -EPROBE_DEFER; } } else { map = syscon_node_to_regmap(np); } if (IS_ERR(map)) { dev_err(dev, "no Versatile syscon regmap\n"); return PTR_ERR(map); } switch (versatile_clcd_type) { case INTEGRATOR_CLCD_CM: versatile_syscon_map = map; priv->variant = &pl110_integrator; priv->variant_display_enable = pl111_integrator_enable; dev_info(dev, "set up callbacks for Integrator PL110\n"); break; case VERSATILE_CLCD: versatile_syscon_map = map; /* This can do RGB565 with external PLD */ priv->variant = &pl110_versatile; priv->variant_display_enable = pl111_versatile_enable; priv->variant_display_disable = pl111_versatile_disable; /* * The Versatile has a variant halfway between PL110 * and PL111 where these two registers have already been * swapped. */ priv->ienb = CLCD_PL111_IENB; priv->ctrl = CLCD_PL111_CNTL; dev_info(dev, "set up callbacks for Versatile PL110\n"); break; case REALVIEW_CLCD_EB: case REALVIEW_CLCD_PB1176: case REALVIEW_CLCD_PB11MP: case REALVIEW_CLCD_PBA8: case REALVIEW_CLCD_PBX: versatile_syscon_map = map; priv->variant = &pl111_realview; priv->variant_display_enable = pl111_realview_clcd_enable; priv->variant_display_disable = pl111_realview_clcd_disable; dev_info(dev, "set up callbacks for RealView PL111\n"); break; case VEXPRESS_CLCD_V2M: priv->variant = &pl111_vexpress; dev_info(dev, "initializing Versatile Express PL111\n"); ret = pl111_vexpress_clcd_init(dev, priv, map); if (ret) return ret; break; default: dev_info(dev, "unknown Versatile system controller\n"); break; } return 0; } EXPORT_SYMBOL_GPL(pl111_versatile_init);
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