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| author | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2017-08-10 09:33:07 +0300 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2017-08-16 12:52:40 +0300 |
| commit | eeb45f85cd25b9bbb91e966b5f8faca6589d2752 (patch) | |
| tree | 1d1a6340f5cc52e7e9ab21051d1101b2ce3417eb /drivers/gpu/drm/omapdrm/dss | |
| parent | 5cdc8dbbdae163b08baa60a1c9408c4ea3af8643 (diff) | |
| download | linux-stable-eeb45f85cd25b9bbb91e966b5f8faca6589d2752.tar.gz linux-stable-eeb45f85cd25b9bbb91e966b5f8faca6589d2752.tar.bz2 linux-stable-eeb45f85cd25b9bbb91e966b5f8faca6589d2752.zip | |
drm/omap: add OMAP5 DSIPHY lane-enable support
We are missing OMAP5 DSIPHY lane-enable support, which has prevented
OMAP5 DSI working in mainline. This patch adds the lane-enable similarly
to the recently added OMAP4 version.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Diffstat (limited to 'drivers/gpu/drm/omapdrm/dss')
| -rw-r--r-- | drivers/gpu/drm/omapdrm/dss/dsi.c | 47 |
1 files changed, 39 insertions, 8 deletions
diff --git a/drivers/gpu/drm/omapdrm/dss/dsi.c b/drivers/gpu/drm/omapdrm/dss/dsi.c index 1855d69b211d..b56a05730314 100644 --- a/drivers/gpu/drm/omapdrm/dss/dsi.c +++ b/drivers/gpu/drm/omapdrm/dss/dsi.c @@ -2108,9 +2108,6 @@ static int dsi_omap4_mux_pads(struct dsi_data *dsi, unsigned int lanes) u32 enable_mask, enable_shift; u32 pipd_mask, pipd_shift; - if (!dsi->syscon) - return 0; - if (dsi->module_id == 0) { enable_mask = OMAP4_DSI1_LANEENABLE_MASK; enable_shift = OMAP4_DSI1_LANEENABLE_SHIFT; @@ -2130,14 +2127,45 @@ static int dsi_omap4_mux_pads(struct dsi_data *dsi, unsigned int lanes) (lanes << enable_shift) | (lanes << pipd_shift)); } +/* OMAP5 CONTROL_DSIPHY */ + +#define OMAP5_DSIPHY_SYSCON_OFFSET 0x74 + +#define OMAP5_DSI1_LANEENABLE_SHIFT 24 +#define OMAP5_DSI2_LANEENABLE_SHIFT 19 +#define OMAP5_DSI_LANEENABLE_MASK 0x1f + +static int dsi_omap5_mux_pads(struct dsi_data *dsi, unsigned int lanes) +{ + u32 enable_shift; + + if (dsi->module_id == 0) + enable_shift = OMAP5_DSI1_LANEENABLE_SHIFT; + else if (dsi->module_id == 1) + enable_shift = OMAP5_DSI2_LANEENABLE_SHIFT; + else + return -ENODEV; + + return regmap_update_bits(dsi->syscon, OMAP5_DSIPHY_SYSCON_OFFSET, + OMAP5_DSI_LANEENABLE_MASK << enable_shift, + lanes << enable_shift); +} + static int dsi_enable_pads(struct dsi_data *dsi, unsigned int lane_mask) { - return dsi_omap4_mux_pads(dsi, lane_mask); + if (dsi->data->model == DSI_MODEL_OMAP4) + return dsi_omap4_mux_pads(dsi, lane_mask); + if (dsi->data->model == DSI_MODEL_OMAP5) + return dsi_omap5_mux_pads(dsi, lane_mask); + return 0; } static void dsi_disable_pads(struct dsi_data *dsi) { - dsi_omap4_mux_pads(dsi, 0); + if (dsi->data->model == DSI_MODEL_OMAP4) + dsi_omap4_mux_pads(dsi, 0); + else if (dsi->data->model == DSI_MODEL_OMAP5) + dsi_omap5_mux_pads(dsi, 0); } static int dsi_cio_init(struct platform_device *dsidev) @@ -5471,14 +5499,17 @@ static int dsi_bind(struct device *dev, struct device *master, void *data) dsi->module_id = d->id; - if (dsi->data->model == DSI_MODEL_OMAP4) { + if (dsi->data->model == DSI_MODEL_OMAP4 || + dsi->data->model == DSI_MODEL_OMAP5) { struct device_node *np; /* - * The OMAP4 display DT bindings don't reference the padconf + * The OMAP4/5 display DT bindings don't reference the padconf * syscon. Our only option to retrieve it is to find it by name. */ - np = of_find_node_by_name(NULL, "omap4_padconf_global"); + np = of_find_node_by_name(NULL, + dsi->data->model == DSI_MODEL_OMAP4 ? + "omap4_padconf_global" : "omap5_padconf_global"); if (!np) return -ENODEV; |