1039 lines
31 KiB
C
1039 lines
31 KiB
C
/*
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* Copyright © 2014 Intel Corporation
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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 (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* 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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Author: Shobhit Kumar <shobhit.kumar@intel.com>
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*
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*/
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#include <linux/gpio/consumer.h>
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#include <linux/gpio/machine.h>
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#include <linux/mfd/intel_soc_pmic.h>
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#include <linux/pinctrl/consumer.h>
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#include <linux/pinctrl/machine.h>
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#include <linux/slab.h>
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#include <linux/string_helpers.h>
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#include <asm/unaligned.h>
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#include <drm/drm_crtc.h>
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#include <drm/drm_edid.h>
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#include <video/mipi_display.h>
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#include "i915_drv.h"
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#include "i915_reg.h"
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#include "intel_de.h"
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#include "intel_display_types.h"
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#include "intel_dsi.h"
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#include "intel_dsi_vbt.h"
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#include "intel_gmbus_regs.h"
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#include "intel_pps_regs.h"
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#include "vlv_dsi.h"
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#include "vlv_dsi_regs.h"
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#include "vlv_sideband.h"
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#define MIPI_TRANSFER_MODE_SHIFT 0
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#define MIPI_VIRTUAL_CHANNEL_SHIFT 1
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#define MIPI_PORT_SHIFT 3
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/* base offsets for gpio pads */
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#define VLV_GPIO_NC_0_HV_DDI0_HPD 0x4130
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#define VLV_GPIO_NC_1_HV_DDI0_DDC_SDA 0x4120
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#define VLV_GPIO_NC_2_HV_DDI0_DDC_SCL 0x4110
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#define VLV_GPIO_NC_3_PANEL0_VDDEN 0x4140
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#define VLV_GPIO_NC_4_PANEL0_BKLTEN 0x4150
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#define VLV_GPIO_NC_5_PANEL0_BKLTCTL 0x4160
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#define VLV_GPIO_NC_6_HV_DDI1_HPD 0x4180
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#define VLV_GPIO_NC_7_HV_DDI1_DDC_SDA 0x4190
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#define VLV_GPIO_NC_8_HV_DDI1_DDC_SCL 0x4170
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#define VLV_GPIO_NC_9_PANEL1_VDDEN 0x4100
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#define VLV_GPIO_NC_10_PANEL1_BKLTEN 0x40E0
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#define VLV_GPIO_NC_11_PANEL1_BKLTCTL 0x40F0
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#define VLV_GPIO_PCONF0(base_offset) (base_offset)
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#define VLV_GPIO_PAD_VAL(base_offset) ((base_offset) + 8)
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struct gpio_map {
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u16 base_offset;
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bool init;
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};
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static struct gpio_map vlv_gpio_table[] = {
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{ VLV_GPIO_NC_0_HV_DDI0_HPD },
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{ VLV_GPIO_NC_1_HV_DDI0_DDC_SDA },
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{ VLV_GPIO_NC_2_HV_DDI0_DDC_SCL },
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{ VLV_GPIO_NC_3_PANEL0_VDDEN },
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{ VLV_GPIO_NC_4_PANEL0_BKLTEN },
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{ VLV_GPIO_NC_5_PANEL0_BKLTCTL },
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{ VLV_GPIO_NC_6_HV_DDI1_HPD },
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{ VLV_GPIO_NC_7_HV_DDI1_DDC_SDA },
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{ VLV_GPIO_NC_8_HV_DDI1_DDC_SCL },
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{ VLV_GPIO_NC_9_PANEL1_VDDEN },
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{ VLV_GPIO_NC_10_PANEL1_BKLTEN },
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{ VLV_GPIO_NC_11_PANEL1_BKLTCTL },
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};
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struct i2c_adapter_lookup {
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u16 slave_addr;
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struct intel_dsi *intel_dsi;
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acpi_handle dev_handle;
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};
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#define CHV_GPIO_IDX_START_N 0
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#define CHV_GPIO_IDX_START_E 73
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#define CHV_GPIO_IDX_START_SW 100
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#define CHV_GPIO_IDX_START_SE 198
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#define CHV_VBT_MAX_PINS_PER_FMLY 15
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#define CHV_GPIO_PAD_CFG0(f, i) (0x4400 + (f) * 0x400 + (i) * 8)
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#define CHV_GPIO_GPIOEN (1 << 15)
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#define CHV_GPIO_GPIOCFG_GPIO (0 << 8)
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#define CHV_GPIO_GPIOCFG_GPO (1 << 8)
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#define CHV_GPIO_GPIOCFG_GPI (2 << 8)
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#define CHV_GPIO_GPIOCFG_HIZ (3 << 8)
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#define CHV_GPIO_GPIOTXSTATE(state) ((!!(state)) << 1)
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#define CHV_GPIO_PAD_CFG1(f, i) (0x4400 + (f) * 0x400 + (i) * 8 + 4)
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#define CHV_GPIO_CFGLOCK (1 << 31)
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/* ICL DSI Display GPIO Pins */
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#define ICL_GPIO_DDSP_HPD_A 0
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#define ICL_GPIO_L_VDDEN_1 1
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#define ICL_GPIO_L_BKLTEN_1 2
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#define ICL_GPIO_DDPA_CTRLCLK_1 3
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#define ICL_GPIO_DDPA_CTRLDATA_1 4
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#define ICL_GPIO_DDSP_HPD_B 5
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#define ICL_GPIO_L_VDDEN_2 6
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#define ICL_GPIO_L_BKLTEN_2 7
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#define ICL_GPIO_DDPA_CTRLCLK_2 8
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#define ICL_GPIO_DDPA_CTRLDATA_2 9
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static enum port intel_dsi_seq_port_to_port(struct intel_dsi *intel_dsi,
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u8 seq_port)
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{
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/*
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* If single link DSI is being used on any port, the VBT sequence block
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* send packet apparently always has 0 for the port. Just use the port
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* we have configured, and ignore the sequence block port.
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*/
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if (hweight8(intel_dsi->ports) == 1)
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return ffs(intel_dsi->ports) - 1;
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if (seq_port) {
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if (intel_dsi->ports & BIT(PORT_B))
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return PORT_B;
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else if (intel_dsi->ports & BIT(PORT_C))
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return PORT_C;
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}
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return PORT_A;
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}
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static const u8 *mipi_exec_send_packet(struct intel_dsi *intel_dsi,
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const u8 *data)
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{
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struct drm_i915_private *dev_priv = to_i915(intel_dsi->base.base.dev);
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struct mipi_dsi_device *dsi_device;
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u8 type, flags, seq_port;
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u16 len;
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enum port port;
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drm_dbg_kms(&dev_priv->drm, "\n");
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flags = *data++;
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type = *data++;
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len = *((u16 *) data);
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data += 2;
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seq_port = (flags >> MIPI_PORT_SHIFT) & 3;
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port = intel_dsi_seq_port_to_port(intel_dsi, seq_port);
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if (drm_WARN_ON(&dev_priv->drm, !intel_dsi->dsi_hosts[port]))
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goto out;
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dsi_device = intel_dsi->dsi_hosts[port]->device;
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if (!dsi_device) {
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drm_dbg_kms(&dev_priv->drm, "no dsi device for port %c\n",
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port_name(port));
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goto out;
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}
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if ((flags >> MIPI_TRANSFER_MODE_SHIFT) & 1)
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dsi_device->mode_flags &= ~MIPI_DSI_MODE_LPM;
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else
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dsi_device->mode_flags |= MIPI_DSI_MODE_LPM;
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dsi_device->channel = (flags >> MIPI_VIRTUAL_CHANNEL_SHIFT) & 3;
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switch (type) {
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case MIPI_DSI_GENERIC_SHORT_WRITE_0_PARAM:
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mipi_dsi_generic_write(dsi_device, NULL, 0);
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break;
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case MIPI_DSI_GENERIC_SHORT_WRITE_1_PARAM:
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mipi_dsi_generic_write(dsi_device, data, 1);
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break;
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case MIPI_DSI_GENERIC_SHORT_WRITE_2_PARAM:
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mipi_dsi_generic_write(dsi_device, data, 2);
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break;
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case MIPI_DSI_GENERIC_READ_REQUEST_0_PARAM:
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case MIPI_DSI_GENERIC_READ_REQUEST_1_PARAM:
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case MIPI_DSI_GENERIC_READ_REQUEST_2_PARAM:
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drm_dbg(&dev_priv->drm,
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"Generic Read not yet implemented or used\n");
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break;
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case MIPI_DSI_GENERIC_LONG_WRITE:
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mipi_dsi_generic_write(dsi_device, data, len);
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break;
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case MIPI_DSI_DCS_SHORT_WRITE:
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mipi_dsi_dcs_write_buffer(dsi_device, data, 1);
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break;
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case MIPI_DSI_DCS_SHORT_WRITE_PARAM:
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mipi_dsi_dcs_write_buffer(dsi_device, data, 2);
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break;
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case MIPI_DSI_DCS_READ:
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drm_dbg(&dev_priv->drm,
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"DCS Read not yet implemented or used\n");
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break;
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case MIPI_DSI_DCS_LONG_WRITE:
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mipi_dsi_dcs_write_buffer(dsi_device, data, len);
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break;
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}
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if (DISPLAY_VER(dev_priv) < 11)
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vlv_dsi_wait_for_fifo_empty(intel_dsi, port);
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out:
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data += len;
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return data;
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}
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static const u8 *mipi_exec_delay(struct intel_dsi *intel_dsi, const u8 *data)
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{
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struct drm_i915_private *i915 = to_i915(intel_dsi->base.base.dev);
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u32 delay = *((const u32 *) data);
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drm_dbg_kms(&i915->drm, "\n");
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usleep_range(delay, delay + 10);
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data += 4;
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return data;
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}
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static void vlv_exec_gpio(struct intel_connector *connector,
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u8 gpio_source, u8 gpio_index, bool value)
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{
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struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
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struct gpio_map *map;
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u16 pconf0, padval;
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u32 tmp;
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u8 port;
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if (gpio_index >= ARRAY_SIZE(vlv_gpio_table)) {
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drm_dbg_kms(&dev_priv->drm, "unknown gpio index %u\n",
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gpio_index);
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return;
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}
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map = &vlv_gpio_table[gpio_index];
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if (connector->panel.vbt.dsi.seq_version >= 3) {
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/* XXX: this assumes vlv_gpio_table only has NC GPIOs. */
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port = IOSF_PORT_GPIO_NC;
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} else {
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if (gpio_source == 0) {
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port = IOSF_PORT_GPIO_NC;
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} else if (gpio_source == 1) {
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drm_dbg_kms(&dev_priv->drm, "SC gpio not supported\n");
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return;
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} else {
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drm_dbg_kms(&dev_priv->drm,
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"unknown gpio source %u\n", gpio_source);
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return;
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}
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}
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pconf0 = VLV_GPIO_PCONF0(map->base_offset);
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padval = VLV_GPIO_PAD_VAL(map->base_offset);
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vlv_iosf_sb_get(dev_priv, BIT(VLV_IOSF_SB_GPIO));
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if (!map->init) {
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/* FIXME: remove constant below */
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vlv_iosf_sb_write(dev_priv, port, pconf0, 0x2000CC00);
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map->init = true;
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}
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tmp = 0x4 | value;
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vlv_iosf_sb_write(dev_priv, port, padval, tmp);
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vlv_iosf_sb_put(dev_priv, BIT(VLV_IOSF_SB_GPIO));
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}
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static void chv_exec_gpio(struct intel_connector *connector,
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u8 gpio_source, u8 gpio_index, bool value)
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{
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struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
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u16 cfg0, cfg1;
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u16 family_num;
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u8 port;
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if (connector->panel.vbt.dsi.seq_version >= 3) {
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if (gpio_index >= CHV_GPIO_IDX_START_SE) {
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/* XXX: it's unclear whether 255->57 is part of SE. */
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gpio_index -= CHV_GPIO_IDX_START_SE;
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port = CHV_IOSF_PORT_GPIO_SE;
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} else if (gpio_index >= CHV_GPIO_IDX_START_SW) {
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gpio_index -= CHV_GPIO_IDX_START_SW;
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port = CHV_IOSF_PORT_GPIO_SW;
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} else if (gpio_index >= CHV_GPIO_IDX_START_E) {
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gpio_index -= CHV_GPIO_IDX_START_E;
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port = CHV_IOSF_PORT_GPIO_E;
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} else {
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port = CHV_IOSF_PORT_GPIO_N;
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}
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} else {
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/* XXX: The spec is unclear about CHV GPIO on seq v2 */
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if (gpio_source != 0) {
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drm_dbg_kms(&dev_priv->drm,
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"unknown gpio source %u\n", gpio_source);
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return;
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}
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if (gpio_index >= CHV_GPIO_IDX_START_E) {
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drm_dbg_kms(&dev_priv->drm,
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"invalid gpio index %u for GPIO N\n",
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gpio_index);
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return;
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}
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port = CHV_IOSF_PORT_GPIO_N;
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}
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family_num = gpio_index / CHV_VBT_MAX_PINS_PER_FMLY;
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gpio_index = gpio_index % CHV_VBT_MAX_PINS_PER_FMLY;
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cfg0 = CHV_GPIO_PAD_CFG0(family_num, gpio_index);
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cfg1 = CHV_GPIO_PAD_CFG1(family_num, gpio_index);
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vlv_iosf_sb_get(dev_priv, BIT(VLV_IOSF_SB_GPIO));
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vlv_iosf_sb_write(dev_priv, port, cfg1, 0);
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vlv_iosf_sb_write(dev_priv, port, cfg0,
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CHV_GPIO_GPIOEN | CHV_GPIO_GPIOCFG_GPO |
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CHV_GPIO_GPIOTXSTATE(value));
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vlv_iosf_sb_put(dev_priv, BIT(VLV_IOSF_SB_GPIO));
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}
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static void bxt_exec_gpio(struct intel_connector *connector,
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u8 gpio_source, u8 gpio_index, bool value)
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{
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struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
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/* XXX: this table is a quick ugly hack. */
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static struct gpio_desc *bxt_gpio_table[U8_MAX + 1];
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struct gpio_desc *gpio_desc = bxt_gpio_table[gpio_index];
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if (!gpio_desc) {
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gpio_desc = devm_gpiod_get_index(dev_priv->drm.dev,
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NULL, gpio_index,
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value ? GPIOD_OUT_LOW :
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GPIOD_OUT_HIGH);
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if (IS_ERR_OR_NULL(gpio_desc)) {
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drm_err(&dev_priv->drm,
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"GPIO index %u request failed (%ld)\n",
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gpio_index, PTR_ERR(gpio_desc));
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return;
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}
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bxt_gpio_table[gpio_index] = gpio_desc;
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}
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gpiod_set_value(gpio_desc, value);
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}
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static void icl_exec_gpio(struct intel_connector *connector,
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u8 gpio_source, u8 gpio_index, bool value)
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{
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struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
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drm_dbg_kms(&dev_priv->drm, "Skipping ICL GPIO element execution\n");
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}
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enum {
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MIPI_RESET_1 = 0,
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MIPI_AVDD_EN_1,
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MIPI_BKLT_EN_1,
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MIPI_AVEE_EN_1,
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MIPI_VIO_EN_1,
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MIPI_RESET_2,
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MIPI_AVDD_EN_2,
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MIPI_BKLT_EN_2,
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MIPI_AVEE_EN_2,
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MIPI_VIO_EN_2,
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};
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static void icl_native_gpio_set_value(struct drm_i915_private *dev_priv,
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int gpio, bool value)
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{
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int index;
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if (drm_WARN_ON(&dev_priv->drm, DISPLAY_VER(dev_priv) == 11 && gpio >= MIPI_RESET_2))
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return;
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switch (gpio) {
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case MIPI_RESET_1:
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case MIPI_RESET_2:
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index = gpio == MIPI_RESET_1 ? HPD_PORT_A : HPD_PORT_B;
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/*
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* Disable HPD to set the pin to output, and set output
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* value. The HPD pin should not be enabled for DSI anyway,
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* assuming the board design and VBT are sane, and the pin isn't
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* used by a non-DSI encoder.
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*
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* The locking protects against concurrent SHOTPLUG_CTL_DDI
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* modifications in irq setup and handling.
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*/
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spin_lock_irq(&dev_priv->irq_lock);
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intel_de_rmw(dev_priv, SHOTPLUG_CTL_DDI,
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SHOTPLUG_CTL_DDI_HPD_ENABLE(index) |
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SHOTPLUG_CTL_DDI_HPD_OUTPUT_DATA(index),
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value ? SHOTPLUG_CTL_DDI_HPD_OUTPUT_DATA(index) : 0);
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spin_unlock_irq(&dev_priv->irq_lock);
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break;
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case MIPI_AVDD_EN_1:
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case MIPI_AVDD_EN_2:
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index = gpio == MIPI_AVDD_EN_1 ? 0 : 1;
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intel_de_rmw(dev_priv, PP_CONTROL(index), PANEL_POWER_ON,
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value ? PANEL_POWER_ON : 0);
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break;
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case MIPI_BKLT_EN_1:
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case MIPI_BKLT_EN_2:
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index = gpio == MIPI_BKLT_EN_1 ? 0 : 1;
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intel_de_rmw(dev_priv, PP_CONTROL(index), EDP_BLC_ENABLE,
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value ? EDP_BLC_ENABLE : 0);
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break;
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case MIPI_AVEE_EN_1:
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case MIPI_AVEE_EN_2:
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|
index = gpio == MIPI_AVEE_EN_1 ? 1 : 2;
|
|
|
|
intel_de_rmw(dev_priv, GPIO(dev_priv, index),
|
|
GPIO_CLOCK_VAL_OUT,
|
|
GPIO_CLOCK_DIR_MASK | GPIO_CLOCK_DIR_OUT |
|
|
GPIO_CLOCK_VAL_MASK | (value ? GPIO_CLOCK_VAL_OUT : 0));
|
|
break;
|
|
case MIPI_VIO_EN_1:
|
|
case MIPI_VIO_EN_2:
|
|
index = gpio == MIPI_VIO_EN_1 ? 1 : 2;
|
|
|
|
intel_de_rmw(dev_priv, GPIO(dev_priv, index),
|
|
GPIO_DATA_VAL_OUT,
|
|
GPIO_DATA_DIR_MASK | GPIO_DATA_DIR_OUT |
|
|
GPIO_DATA_VAL_MASK | (value ? GPIO_DATA_VAL_OUT : 0));
|
|
break;
|
|
default:
|
|
MISSING_CASE(gpio);
|
|
}
|
|
}
|
|
|
|
static const u8 *mipi_exec_gpio(struct intel_dsi *intel_dsi, const u8 *data)
|
|
{
|
|
struct drm_device *dev = intel_dsi->base.base.dev;
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
struct intel_connector *connector = intel_dsi->attached_connector;
|
|
u8 gpio_source, gpio_index = 0, gpio_number;
|
|
bool value;
|
|
bool native = DISPLAY_VER(dev_priv) >= 11;
|
|
|
|
if (connector->panel.vbt.dsi.seq_version >= 3)
|
|
gpio_index = *data++;
|
|
|
|
gpio_number = *data++;
|
|
|
|
/* gpio source in sequence v2 only */
|
|
if (connector->panel.vbt.dsi.seq_version == 2)
|
|
gpio_source = (*data >> 1) & 3;
|
|
else
|
|
gpio_source = 0;
|
|
|
|
if (connector->panel.vbt.dsi.seq_version >= 4 && *data & BIT(1))
|
|
native = false;
|
|
|
|
/* pull up/down */
|
|
value = *data++ & 1;
|
|
|
|
drm_dbg_kms(&dev_priv->drm, "GPIO index %u, number %u, source %u, native %s, set to %s\n",
|
|
gpio_index, gpio_number, gpio_source, str_yes_no(native), str_on_off(value));
|
|
|
|
if (native)
|
|
icl_native_gpio_set_value(dev_priv, gpio_number, value);
|
|
else if (DISPLAY_VER(dev_priv) >= 11)
|
|
icl_exec_gpio(connector, gpio_source, gpio_index, value);
|
|
else if (IS_VALLEYVIEW(dev_priv))
|
|
vlv_exec_gpio(connector, gpio_source, gpio_number, value);
|
|
else if (IS_CHERRYVIEW(dev_priv))
|
|
chv_exec_gpio(connector, gpio_source, gpio_number, value);
|
|
else
|
|
bxt_exec_gpio(connector, gpio_source, gpio_index, value);
|
|
|
|
return data;
|
|
}
|
|
|
|
#ifdef CONFIG_ACPI
|
|
static int i2c_adapter_lookup(struct acpi_resource *ares, void *data)
|
|
{
|
|
struct i2c_adapter_lookup *lookup = data;
|
|
struct intel_dsi *intel_dsi = lookup->intel_dsi;
|
|
struct acpi_resource_i2c_serialbus *sb;
|
|
struct i2c_adapter *adapter;
|
|
acpi_handle adapter_handle;
|
|
acpi_status status;
|
|
|
|
if (!i2c_acpi_get_i2c_resource(ares, &sb))
|
|
return 1;
|
|
|
|
if (lookup->slave_addr != sb->slave_address)
|
|
return 1;
|
|
|
|
status = acpi_get_handle(lookup->dev_handle,
|
|
sb->resource_source.string_ptr,
|
|
&adapter_handle);
|
|
if (ACPI_FAILURE(status))
|
|
return 1;
|
|
|
|
adapter = i2c_acpi_find_adapter_by_handle(adapter_handle);
|
|
if (adapter)
|
|
intel_dsi->i2c_bus_num = adapter->nr;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static void i2c_acpi_find_adapter(struct intel_dsi *intel_dsi,
|
|
const u16 slave_addr)
|
|
{
|
|
struct drm_device *drm_dev = intel_dsi->base.base.dev;
|
|
struct acpi_device *adev = ACPI_COMPANION(drm_dev->dev);
|
|
struct i2c_adapter_lookup lookup = {
|
|
.slave_addr = slave_addr,
|
|
.intel_dsi = intel_dsi,
|
|
.dev_handle = acpi_device_handle(adev),
|
|
};
|
|
LIST_HEAD(resource_list);
|
|
|
|
acpi_dev_get_resources(adev, &resource_list, i2c_adapter_lookup, &lookup);
|
|
acpi_dev_free_resource_list(&resource_list);
|
|
}
|
|
#else
|
|
static inline void i2c_acpi_find_adapter(struct intel_dsi *intel_dsi,
|
|
const u16 slave_addr)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
static const u8 *mipi_exec_i2c(struct intel_dsi *intel_dsi, const u8 *data)
|
|
{
|
|
struct drm_i915_private *i915 = to_i915(intel_dsi->base.base.dev);
|
|
struct i2c_adapter *adapter;
|
|
struct i2c_msg msg;
|
|
int ret;
|
|
u8 vbt_i2c_bus_num = *(data + 2);
|
|
u16 slave_addr = *(u16 *)(data + 3);
|
|
u8 reg_offset = *(data + 5);
|
|
u8 payload_size = *(data + 6);
|
|
u8 *payload_data;
|
|
|
|
if (intel_dsi->i2c_bus_num < 0) {
|
|
intel_dsi->i2c_bus_num = vbt_i2c_bus_num;
|
|
i2c_acpi_find_adapter(intel_dsi, slave_addr);
|
|
}
|
|
|
|
adapter = i2c_get_adapter(intel_dsi->i2c_bus_num);
|
|
if (!adapter) {
|
|
drm_err(&i915->drm, "Cannot find a valid i2c bus for xfer\n");
|
|
goto err_bus;
|
|
}
|
|
|
|
payload_data = kzalloc(payload_size + 1, GFP_KERNEL);
|
|
if (!payload_data)
|
|
goto err_alloc;
|
|
|
|
payload_data[0] = reg_offset;
|
|
memcpy(&payload_data[1], (data + 7), payload_size);
|
|
|
|
msg.addr = slave_addr;
|
|
msg.flags = 0;
|
|
msg.len = payload_size + 1;
|
|
msg.buf = payload_data;
|
|
|
|
ret = i2c_transfer(adapter, &msg, 1);
|
|
if (ret < 0)
|
|
drm_err(&i915->drm,
|
|
"Failed to xfer payload of size (%u) to reg (%u)\n",
|
|
payload_size, reg_offset);
|
|
|
|
kfree(payload_data);
|
|
err_alloc:
|
|
i2c_put_adapter(adapter);
|
|
err_bus:
|
|
return data + payload_size + 7;
|
|
}
|
|
|
|
static const u8 *mipi_exec_spi(struct intel_dsi *intel_dsi, const u8 *data)
|
|
{
|
|
struct drm_i915_private *i915 = to_i915(intel_dsi->base.base.dev);
|
|
|
|
drm_dbg_kms(&i915->drm, "Skipping SPI element execution\n");
|
|
|
|
return data + *(data + 5) + 6;
|
|
}
|
|
|
|
static const u8 *mipi_exec_pmic(struct intel_dsi *intel_dsi, const u8 *data)
|
|
{
|
|
struct drm_i915_private *i915 = to_i915(intel_dsi->base.base.dev);
|
|
#ifdef CONFIG_PMIC_OPREGION
|
|
u32 value, mask, reg_address;
|
|
u16 i2c_address;
|
|
int ret;
|
|
|
|
/* byte 0 aka PMIC Flag is reserved */
|
|
i2c_address = get_unaligned_le16(data + 1);
|
|
reg_address = get_unaligned_le32(data + 3);
|
|
value = get_unaligned_le32(data + 7);
|
|
mask = get_unaligned_le32(data + 11);
|
|
|
|
ret = intel_soc_pmic_exec_mipi_pmic_seq_element(i2c_address,
|
|
reg_address,
|
|
value, mask);
|
|
if (ret)
|
|
drm_err(&i915->drm, "%s failed, error: %d\n", __func__, ret);
|
|
#else
|
|
drm_err(&i915->drm,
|
|
"Your hardware requires CONFIG_PMIC_OPREGION and it is not set\n");
|
|
#endif
|
|
|
|
return data + 15;
|
|
}
|
|
|
|
typedef const u8 * (*fn_mipi_elem_exec)(struct intel_dsi *intel_dsi,
|
|
const u8 *data);
|
|
static const fn_mipi_elem_exec exec_elem[] = {
|
|
[MIPI_SEQ_ELEM_SEND_PKT] = mipi_exec_send_packet,
|
|
[MIPI_SEQ_ELEM_DELAY] = mipi_exec_delay,
|
|
[MIPI_SEQ_ELEM_GPIO] = mipi_exec_gpio,
|
|
[MIPI_SEQ_ELEM_I2C] = mipi_exec_i2c,
|
|
[MIPI_SEQ_ELEM_SPI] = mipi_exec_spi,
|
|
[MIPI_SEQ_ELEM_PMIC] = mipi_exec_pmic,
|
|
};
|
|
|
|
/*
|
|
* MIPI Sequence from VBT #53 parsing logic
|
|
* We have already separated each seqence during bios parsing
|
|
* Following is generic execution function for any sequence
|
|
*/
|
|
|
|
static const char * const seq_name[] = {
|
|
[MIPI_SEQ_DEASSERT_RESET] = "MIPI_SEQ_DEASSERT_RESET",
|
|
[MIPI_SEQ_INIT_OTP] = "MIPI_SEQ_INIT_OTP",
|
|
[MIPI_SEQ_DISPLAY_ON] = "MIPI_SEQ_DISPLAY_ON",
|
|
[MIPI_SEQ_DISPLAY_OFF] = "MIPI_SEQ_DISPLAY_OFF",
|
|
[MIPI_SEQ_ASSERT_RESET] = "MIPI_SEQ_ASSERT_RESET",
|
|
[MIPI_SEQ_BACKLIGHT_ON] = "MIPI_SEQ_BACKLIGHT_ON",
|
|
[MIPI_SEQ_BACKLIGHT_OFF] = "MIPI_SEQ_BACKLIGHT_OFF",
|
|
[MIPI_SEQ_TEAR_ON] = "MIPI_SEQ_TEAR_ON",
|
|
[MIPI_SEQ_TEAR_OFF] = "MIPI_SEQ_TEAR_OFF",
|
|
[MIPI_SEQ_POWER_ON] = "MIPI_SEQ_POWER_ON",
|
|
[MIPI_SEQ_POWER_OFF] = "MIPI_SEQ_POWER_OFF",
|
|
};
|
|
|
|
static const char *sequence_name(enum mipi_seq seq_id)
|
|
{
|
|
if (seq_id < ARRAY_SIZE(seq_name) && seq_name[seq_id])
|
|
return seq_name[seq_id];
|
|
else
|
|
return "(unknown)";
|
|
}
|
|
|
|
static void intel_dsi_vbt_exec(struct intel_dsi *intel_dsi,
|
|
enum mipi_seq seq_id)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(intel_dsi->base.base.dev);
|
|
struct intel_connector *connector = intel_dsi->attached_connector;
|
|
const u8 *data;
|
|
fn_mipi_elem_exec mipi_elem_exec;
|
|
|
|
if (drm_WARN_ON(&dev_priv->drm,
|
|
seq_id >= ARRAY_SIZE(connector->panel.vbt.dsi.sequence)))
|
|
return;
|
|
|
|
data = connector->panel.vbt.dsi.sequence[seq_id];
|
|
if (!data)
|
|
return;
|
|
|
|
drm_WARN_ON(&dev_priv->drm, *data != seq_id);
|
|
|
|
drm_dbg_kms(&dev_priv->drm, "Starting MIPI sequence %d - %s\n",
|
|
seq_id, sequence_name(seq_id));
|
|
|
|
/* Skip Sequence Byte. */
|
|
data++;
|
|
|
|
/* Skip Size of Sequence. */
|
|
if (connector->panel.vbt.dsi.seq_version >= 3)
|
|
data += 4;
|
|
|
|
while (1) {
|
|
u8 operation_byte = *data++;
|
|
u8 operation_size = 0;
|
|
|
|
if (operation_byte == MIPI_SEQ_ELEM_END)
|
|
break;
|
|
|
|
if (operation_byte < ARRAY_SIZE(exec_elem))
|
|
mipi_elem_exec = exec_elem[operation_byte];
|
|
else
|
|
mipi_elem_exec = NULL;
|
|
|
|
/* Size of Operation. */
|
|
if (connector->panel.vbt.dsi.seq_version >= 3)
|
|
operation_size = *data++;
|
|
|
|
if (mipi_elem_exec) {
|
|
const u8 *next = data + operation_size;
|
|
|
|
data = mipi_elem_exec(intel_dsi, data);
|
|
|
|
/* Consistency check if we have size. */
|
|
if (operation_size && data != next) {
|
|
drm_err(&dev_priv->drm,
|
|
"Inconsistent operation size\n");
|
|
return;
|
|
}
|
|
} else if (operation_size) {
|
|
/* We have size, skip. */
|
|
drm_dbg_kms(&dev_priv->drm,
|
|
"Unsupported MIPI operation byte %u\n",
|
|
operation_byte);
|
|
data += operation_size;
|
|
} else {
|
|
/* No size, can't skip without parsing. */
|
|
drm_err(&dev_priv->drm,
|
|
"Unsupported MIPI operation byte %u\n",
|
|
operation_byte);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
void intel_dsi_vbt_exec_sequence(struct intel_dsi *intel_dsi,
|
|
enum mipi_seq seq_id)
|
|
{
|
|
if (seq_id == MIPI_SEQ_POWER_ON && intel_dsi->gpio_panel)
|
|
gpiod_set_value_cansleep(intel_dsi->gpio_panel, 1);
|
|
if (seq_id == MIPI_SEQ_BACKLIGHT_ON && intel_dsi->gpio_backlight)
|
|
gpiod_set_value_cansleep(intel_dsi->gpio_backlight, 1);
|
|
|
|
intel_dsi_vbt_exec(intel_dsi, seq_id);
|
|
|
|
if (seq_id == MIPI_SEQ_POWER_OFF && intel_dsi->gpio_panel)
|
|
gpiod_set_value_cansleep(intel_dsi->gpio_panel, 0);
|
|
if (seq_id == MIPI_SEQ_BACKLIGHT_OFF && intel_dsi->gpio_backlight)
|
|
gpiod_set_value_cansleep(intel_dsi->gpio_backlight, 0);
|
|
}
|
|
|
|
void intel_dsi_log_params(struct intel_dsi *intel_dsi)
|
|
{
|
|
struct drm_i915_private *i915 = to_i915(intel_dsi->base.base.dev);
|
|
|
|
drm_dbg_kms(&i915->drm, "Pclk %d\n", intel_dsi->pclk);
|
|
drm_dbg_kms(&i915->drm, "Pixel overlap %d\n",
|
|
intel_dsi->pixel_overlap);
|
|
drm_dbg_kms(&i915->drm, "Lane count %d\n", intel_dsi->lane_count);
|
|
drm_dbg_kms(&i915->drm, "DPHY param reg 0x%x\n", intel_dsi->dphy_reg);
|
|
drm_dbg_kms(&i915->drm, "Video mode format %s\n",
|
|
intel_dsi->video_mode == NON_BURST_SYNC_PULSE ?
|
|
"non-burst with sync pulse" :
|
|
intel_dsi->video_mode == NON_BURST_SYNC_EVENTS ?
|
|
"non-burst with sync events" :
|
|
intel_dsi->video_mode == BURST_MODE ?
|
|
"burst" : "<unknown>");
|
|
drm_dbg_kms(&i915->drm, "Burst mode ratio %d\n",
|
|
intel_dsi->burst_mode_ratio);
|
|
drm_dbg_kms(&i915->drm, "Reset timer %d\n", intel_dsi->rst_timer_val);
|
|
drm_dbg_kms(&i915->drm, "Eot %s\n",
|
|
str_enabled_disabled(intel_dsi->eotp_pkt));
|
|
drm_dbg_kms(&i915->drm, "Clockstop %s\n",
|
|
str_enabled_disabled(!intel_dsi->clock_stop));
|
|
drm_dbg_kms(&i915->drm, "Mode %s\n",
|
|
intel_dsi->operation_mode ? "command" : "video");
|
|
if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK)
|
|
drm_dbg_kms(&i915->drm,
|
|
"Dual link: DSI_DUAL_LINK_FRONT_BACK\n");
|
|
else if (intel_dsi->dual_link == DSI_DUAL_LINK_PIXEL_ALT)
|
|
drm_dbg_kms(&i915->drm,
|
|
"Dual link: DSI_DUAL_LINK_PIXEL_ALT\n");
|
|
else
|
|
drm_dbg_kms(&i915->drm, "Dual link: NONE\n");
|
|
drm_dbg_kms(&i915->drm, "Pixel Format %d\n", intel_dsi->pixel_format);
|
|
drm_dbg_kms(&i915->drm, "TLPX %d\n", intel_dsi->escape_clk_div);
|
|
drm_dbg_kms(&i915->drm, "LP RX Timeout 0x%x\n",
|
|
intel_dsi->lp_rx_timeout);
|
|
drm_dbg_kms(&i915->drm, "Turnaround Timeout 0x%x\n",
|
|
intel_dsi->turn_arnd_val);
|
|
drm_dbg_kms(&i915->drm, "Init Count 0x%x\n", intel_dsi->init_count);
|
|
drm_dbg_kms(&i915->drm, "HS to LP Count 0x%x\n",
|
|
intel_dsi->hs_to_lp_count);
|
|
drm_dbg_kms(&i915->drm, "LP Byte Clock %d\n", intel_dsi->lp_byte_clk);
|
|
drm_dbg_kms(&i915->drm, "DBI BW Timer 0x%x\n", intel_dsi->bw_timer);
|
|
drm_dbg_kms(&i915->drm, "LP to HS Clock Count 0x%x\n",
|
|
intel_dsi->clk_lp_to_hs_count);
|
|
drm_dbg_kms(&i915->drm, "HS to LP Clock Count 0x%x\n",
|
|
intel_dsi->clk_hs_to_lp_count);
|
|
drm_dbg_kms(&i915->drm, "BTA %s\n",
|
|
str_enabled_disabled(!(intel_dsi->video_frmt_cfg_bits & DISABLE_VIDEO_BTA)));
|
|
}
|
|
|
|
bool intel_dsi_vbt_init(struct intel_dsi *intel_dsi, u16 panel_id)
|
|
{
|
|
struct drm_device *dev = intel_dsi->base.base.dev;
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
struct intel_connector *connector = intel_dsi->attached_connector;
|
|
struct mipi_config *mipi_config = connector->panel.vbt.dsi.config;
|
|
struct mipi_pps_data *pps = connector->panel.vbt.dsi.pps;
|
|
struct drm_display_mode *mode = connector->panel.vbt.lfp_lvds_vbt_mode;
|
|
u16 burst_mode_ratio;
|
|
enum port port;
|
|
|
|
drm_dbg_kms(&dev_priv->drm, "\n");
|
|
|
|
intel_dsi->eotp_pkt = mipi_config->eot_pkt_disabled ? 0 : 1;
|
|
intel_dsi->clock_stop = mipi_config->enable_clk_stop ? 1 : 0;
|
|
intel_dsi->lane_count = mipi_config->lane_cnt + 1;
|
|
intel_dsi->pixel_format =
|
|
pixel_format_from_register_bits(
|
|
mipi_config->videomode_color_format << 7);
|
|
|
|
intel_dsi->dual_link = mipi_config->dual_link;
|
|
intel_dsi->pixel_overlap = mipi_config->pixel_overlap;
|
|
intel_dsi->operation_mode = mipi_config->is_cmd_mode;
|
|
intel_dsi->video_mode = mipi_config->video_transfer_mode;
|
|
intel_dsi->escape_clk_div = mipi_config->byte_clk_sel;
|
|
intel_dsi->lp_rx_timeout = mipi_config->lp_rx_timeout;
|
|
intel_dsi->hs_tx_timeout = mipi_config->hs_tx_timeout;
|
|
intel_dsi->turn_arnd_val = mipi_config->turn_around_timeout;
|
|
intel_dsi->rst_timer_val = mipi_config->device_reset_timer;
|
|
intel_dsi->init_count = mipi_config->master_init_timer;
|
|
intel_dsi->bw_timer = mipi_config->dbi_bw_timer;
|
|
intel_dsi->video_frmt_cfg_bits =
|
|
mipi_config->bta_enabled ? DISABLE_VIDEO_BTA : 0;
|
|
intel_dsi->bgr_enabled = mipi_config->rgb_flip;
|
|
|
|
/* Starting point, adjusted depending on dual link and burst mode */
|
|
intel_dsi->pclk = mode->clock;
|
|
|
|
/* In dual link mode each port needs half of pixel clock */
|
|
if (intel_dsi->dual_link) {
|
|
intel_dsi->pclk /= 2;
|
|
|
|
/* we can enable pixel_overlap if needed by panel. In this
|
|
* case we need to increase the pixelclock for extra pixels
|
|
*/
|
|
if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK) {
|
|
intel_dsi->pclk += DIV_ROUND_UP(mode->vtotal * intel_dsi->pixel_overlap * 60, 1000);
|
|
}
|
|
}
|
|
|
|
/* Burst Mode Ratio
|
|
* Target ddr frequency from VBT / non burst ddr freq
|
|
* multiply by 100 to preserve remainder
|
|
*/
|
|
if (intel_dsi->video_mode == BURST_MODE) {
|
|
if (mipi_config->target_burst_mode_freq) {
|
|
u32 bitrate = intel_dsi_bitrate(intel_dsi);
|
|
|
|
/*
|
|
* Sometimes the VBT contains a slightly lower clock,
|
|
* then the bitrate we have calculated, in this case
|
|
* just replace it with the calculated bitrate.
|
|
*/
|
|
if (mipi_config->target_burst_mode_freq < bitrate &&
|
|
intel_fuzzy_clock_check(
|
|
mipi_config->target_burst_mode_freq,
|
|
bitrate))
|
|
mipi_config->target_burst_mode_freq = bitrate;
|
|
|
|
if (mipi_config->target_burst_mode_freq < bitrate) {
|
|
drm_err(&dev_priv->drm,
|
|
"Burst mode freq is less than computed\n");
|
|
return false;
|
|
}
|
|
|
|
burst_mode_ratio = DIV_ROUND_UP(
|
|
mipi_config->target_burst_mode_freq * 100,
|
|
bitrate);
|
|
|
|
intel_dsi->pclk = DIV_ROUND_UP(intel_dsi->pclk * burst_mode_ratio, 100);
|
|
} else {
|
|
drm_err(&dev_priv->drm,
|
|
"Burst mode target is not set\n");
|
|
return false;
|
|
}
|
|
} else
|
|
burst_mode_ratio = 100;
|
|
|
|
intel_dsi->burst_mode_ratio = burst_mode_ratio;
|
|
|
|
/* delays in VBT are in unit of 100us, so need to convert
|
|
* here in ms
|
|
* Delay (100us) * 100 /1000 = Delay / 10 (ms) */
|
|
intel_dsi->backlight_off_delay = pps->bl_disable_delay / 10;
|
|
intel_dsi->backlight_on_delay = pps->bl_enable_delay / 10;
|
|
intel_dsi->panel_on_delay = pps->panel_on_delay / 10;
|
|
intel_dsi->panel_off_delay = pps->panel_off_delay / 10;
|
|
intel_dsi->panel_pwr_cycle_delay = pps->panel_power_cycle_delay / 10;
|
|
|
|
intel_dsi->i2c_bus_num = -1;
|
|
|
|
/* a regular driver would get the device in probe */
|
|
for_each_dsi_port(port, intel_dsi->ports) {
|
|
mipi_dsi_attach(intel_dsi->dsi_hosts[port]->device);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* On some BYT/CHT devs some sequences are incomplete and we need to manually
|
|
* control some GPIOs. We need to add a GPIO lookup table before we get these.
|
|
* If the GOP did not initialize the panel (HDMI inserted) we may need to also
|
|
* change the pinmux for the SoC's PWM0 pin from GPIO to PWM.
|
|
*/
|
|
static struct gpiod_lookup_table pmic_panel_gpio_table = {
|
|
/* Intel GFX is consumer */
|
|
.dev_id = "0000:00:02.0",
|
|
.table = {
|
|
/* Panel EN/DISABLE */
|
|
GPIO_LOOKUP("gpio_crystalcove", 94, "panel", GPIO_ACTIVE_HIGH),
|
|
{ }
|
|
},
|
|
};
|
|
|
|
static struct gpiod_lookup_table soc_panel_gpio_table = {
|
|
.dev_id = "0000:00:02.0",
|
|
.table = {
|
|
GPIO_LOOKUP("INT33FC:01", 10, "backlight", GPIO_ACTIVE_HIGH),
|
|
GPIO_LOOKUP("INT33FC:01", 11, "panel", GPIO_ACTIVE_HIGH),
|
|
{ }
|
|
},
|
|
};
|
|
|
|
static const struct pinctrl_map soc_pwm_pinctrl_map[] = {
|
|
PIN_MAP_MUX_GROUP("0000:00:02.0", "soc_pwm0", "INT33FC:00",
|
|
"pwm0_grp", "pwm"),
|
|
};
|
|
|
|
void intel_dsi_vbt_gpio_init(struct intel_dsi *intel_dsi, bool panel_is_on)
|
|
{
|
|
struct drm_device *dev = intel_dsi->base.base.dev;
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
struct intel_connector *connector = intel_dsi->attached_connector;
|
|
struct mipi_config *mipi_config = connector->panel.vbt.dsi.config;
|
|
enum gpiod_flags flags = panel_is_on ? GPIOD_OUT_HIGH : GPIOD_OUT_LOW;
|
|
bool want_backlight_gpio = false;
|
|
bool want_panel_gpio = false;
|
|
struct pinctrl *pinctrl;
|
|
int ret;
|
|
|
|
if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
|
|
mipi_config->pwm_blc == PPS_BLC_PMIC) {
|
|
gpiod_add_lookup_table(&pmic_panel_gpio_table);
|
|
want_panel_gpio = true;
|
|
}
|
|
|
|
if (IS_VALLEYVIEW(dev_priv) && mipi_config->pwm_blc == PPS_BLC_SOC) {
|
|
gpiod_add_lookup_table(&soc_panel_gpio_table);
|
|
want_panel_gpio = true;
|
|
want_backlight_gpio = true;
|
|
|
|
/* Ensure PWM0 pin is muxed as PWM instead of GPIO */
|
|
ret = pinctrl_register_mappings(soc_pwm_pinctrl_map,
|
|
ARRAY_SIZE(soc_pwm_pinctrl_map));
|
|
if (ret)
|
|
drm_err(&dev_priv->drm,
|
|
"Failed to register pwm0 pinmux mapping\n");
|
|
|
|
pinctrl = devm_pinctrl_get_select(dev->dev, "soc_pwm0");
|
|
if (IS_ERR(pinctrl))
|
|
drm_err(&dev_priv->drm,
|
|
"Failed to set pinmux to PWM\n");
|
|
}
|
|
|
|
if (want_panel_gpio) {
|
|
intel_dsi->gpio_panel = gpiod_get(dev->dev, "panel", flags);
|
|
if (IS_ERR(intel_dsi->gpio_panel)) {
|
|
drm_err(&dev_priv->drm,
|
|
"Failed to own gpio for panel control\n");
|
|
intel_dsi->gpio_panel = NULL;
|
|
}
|
|
}
|
|
|
|
if (want_backlight_gpio) {
|
|
intel_dsi->gpio_backlight =
|
|
gpiod_get(dev->dev, "backlight", flags);
|
|
if (IS_ERR(intel_dsi->gpio_backlight)) {
|
|
drm_err(&dev_priv->drm,
|
|
"Failed to own gpio for backlight control\n");
|
|
intel_dsi->gpio_backlight = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
void intel_dsi_vbt_gpio_cleanup(struct intel_dsi *intel_dsi)
|
|
{
|
|
struct drm_device *dev = intel_dsi->base.base.dev;
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
struct intel_connector *connector = intel_dsi->attached_connector;
|
|
struct mipi_config *mipi_config = connector->panel.vbt.dsi.config;
|
|
|
|
if (intel_dsi->gpio_panel) {
|
|
gpiod_put(intel_dsi->gpio_panel);
|
|
intel_dsi->gpio_panel = NULL;
|
|
}
|
|
|
|
if (intel_dsi->gpio_backlight) {
|
|
gpiod_put(intel_dsi->gpio_backlight);
|
|
intel_dsi->gpio_backlight = NULL;
|
|
}
|
|
|
|
if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
|
|
mipi_config->pwm_blc == PPS_BLC_PMIC)
|
|
gpiod_remove_lookup_table(&pmic_panel_gpio_table);
|
|
|
|
if (IS_VALLEYVIEW(dev_priv) && mipi_config->pwm_blc == PPS_BLC_SOC) {
|
|
pinctrl_unregister_mappings(soc_pwm_pinctrl_map);
|
|
gpiod_remove_lookup_table(&soc_panel_gpio_table);
|
|
}
|
|
}
|