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+/*
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+ * Copyright 2012 Red Hat Inc.
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+ *
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+ * Permission is hereby granted, free of charge, to any person obtaining a
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+ * copy of this software and associated documentation files (the "Software"),
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+ * to deal in the Software without restriction, including without limitation
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+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
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+ * and/or sell copies of the Software, and to permit persons to whom the
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+ * Software is furnished to do so, subject to the following conditions:
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+ *
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+ * The above copyright notice and this permission notice shall be included in
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+ * all copies or substantial portions of the Software.
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+ *
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+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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+ * OTHER DEALINGS IN THE SOFTWARE.
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+ *
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+ * Authors: Ben Skeggs
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+ */
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+
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+#include <core/os.h>
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+#include <core/class.h>
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+
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+#include <subdev/bios.h>
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+#include <subdev/bios/dcb.h>
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+#include <subdev/timer.h>
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+#include <subdev/i2c.h>
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+
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+#include "nv50.h"
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+
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+/******************************************************************************
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+ * DisplayPort
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+ *****************************************************************************/
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+static struct nouveau_i2c_port *
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+nv50_pior_dp_find(struct nouveau_disp *disp, struct dcb_output *outp)
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+{
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+ struct nouveau_i2c *i2c = nouveau_i2c(disp);
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+ return i2c->find_type(i2c, NV_I2C_TYPE_EXTAUX(outp->extdev));
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+}
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+
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+static int
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+nv50_pior_dp_pattern(struct nouveau_disp *disp, struct dcb_output *outp,
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+ int head, int pattern)
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+{
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+ struct nouveau_i2c_port *port;
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+ int ret = -EINVAL;
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+
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+ port = nv50_pior_dp_find(disp, outp);
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+ if (port) {
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+ if (port->func->pattern)
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+ ret = port->func->pattern(port, pattern);
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+ else
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+ ret = 0;
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+ }
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+
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+ return ret;
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+}
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+
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+static int
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+nv50_pior_dp_lnk_ctl(struct nouveau_disp *disp, struct dcb_output *outp,
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+ int head, int lane_nr, int link_bw, bool enh)
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+{
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+ struct nouveau_i2c_port *port;
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+ int ret = -EINVAL;
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+
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+ port = nv50_pior_dp_find(disp, outp);
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+ if (port && port->func->lnk_ctl)
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+ ret = port->func->lnk_ctl(port, lane_nr, link_bw, enh);
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+
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+ return ret;
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+}
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+
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+static int
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+nv50_pior_dp_drv_ctl(struct nouveau_disp *disp, struct dcb_output *outp,
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+ int head, int lane, int vsw, int pre)
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+{
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+ struct nouveau_i2c_port *port;
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+ int ret = -EINVAL;
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+
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+ port = nv50_pior_dp_find(disp, outp);
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+ if (port) {
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+ if (port->func->drv_ctl)
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+ ret = port->func->drv_ctl(port, lane, vsw, pre);
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+ else
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+ ret = 0;
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+ }
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+
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+ return ret;
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+}
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+
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+const struct nouveau_dp_func
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+nv50_pior_dp_func = {
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+ .pattern = nv50_pior_dp_pattern,
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+ .lnk_ctl = nv50_pior_dp_lnk_ctl,
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+ .drv_ctl = nv50_pior_dp_drv_ctl,
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+};
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+
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+/******************************************************************************
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+ * General PIOR handling
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+ *****************************************************************************/
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+int
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+nv50_pior_power(struct nv50_disp_priv *priv, int or, u32 data)
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+{
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+ const u32 stat = data & NV50_DISP_PIOR_PWR_STATE;
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+ const u32 soff = (or * 0x800);
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+ nv_wait(priv, 0x61e004 + soff, 0x80000000, 0x00000000);
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+ nv_mask(priv, 0x61e004 + soff, 0x80000101, 0x80000000 | stat);
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+ nv_wait(priv, 0x61e004 + soff, 0x80000000, 0x00000000);
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+ return 0;
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+}
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+
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+int
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+nv50_pior_mthd(struct nouveau_object *object, u32 mthd, void *args, u32 size)
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+{
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+ struct nv50_disp_priv *priv = (void *)object->engine;
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+ const u8 type = (mthd & NV50_DISP_PIOR_MTHD_TYPE) >> 12;
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+ const u8 or = (mthd & NV50_DISP_PIOR_MTHD_OR);
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+ u32 *data = args;
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+ int ret;
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+
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+ if (size < sizeof(u32))
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+ return -EINVAL;
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+
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+ mthd &= ~NV50_DISP_PIOR_MTHD_TYPE;
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+ mthd &= ~NV50_DISP_PIOR_MTHD_OR;
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+ switch (mthd) {
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+ case NV50_DISP_PIOR_PWR:
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+ ret = priv->pior.power(priv, or, data[0]);
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+ priv->pior.type[or] = type;
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+ break;
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+ default:
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+ return -EINVAL;
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+ }
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+
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+ return ret;
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+}
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Ben Skeggs