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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>
This commit is contained in:
Tomi Valkeinen 2017-08-10 09:33:07 +03:00
parent 5cdc8dbbda
commit eeb45f85cd
1 changed files with 39 additions and 8 deletions
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47
drivers/gpu/drm/omapdrm/dss/dsi.c
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@ -2108,9 +2108,6 @@ static int dsi_omap4_mux_pads(struct dsi_data *dsi, unsigned int lanes)
u32 enable_mask, enable_shift; u32 enable_mask, enable_shift;
u32 pipd_mask, pipd_shift; u32 pipd_mask, pipd_shift;
if (!dsi->syscon)
return 0;
if (dsi->module_id == 0) { if (dsi->module_id == 0) {
enable_mask = OMAP4_DSI1_LANEENABLE_MASK; enable_mask = OMAP4_DSI1_LANEENABLE_MASK;
enable_shift = OMAP4_DSI1_LANEENABLE_SHIFT; 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)); (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) 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) 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) 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; 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; 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. * 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) if (!np)
return -ENODEV; return -ENODEV;