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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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5e83f359d9
If the bridge is connected using both DSI ports, the driver should use both of them all the time. Correct programming sequence to always use dual-port mode if both dsi0 and dsi1 are connected. Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20230118081658.2198520-14-dmitry.baryshkov@linaro.org
1199 lines
28 KiB
C
1199 lines
28 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2018, The Linux Foundation. All rights reserved.
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* Copyright (c) 2019-2020. Linaro Limited.
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*/
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#include <linux/gpio/consumer.h>
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#include <linux/i2c.h>
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#include <linux/interrupt.h>
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#include <linux/media-bus-format.h>
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#include <linux/module.h>
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#include <linux/of_graph.h>
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#include <linux/platform_device.h>
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#include <linux/regmap.h>
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#include <linux/regulator/consumer.h>
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#include <sound/hdmi-codec.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_bridge.h>
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#include <drm/drm_mipi_dsi.h>
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#include <drm/drm_of.h>
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#include <drm/drm_print.h>
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#include <drm/drm_probe_helper.h>
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#define EDID_SEG_SIZE 256
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#define EDID_LEN 32
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#define EDID_LOOP 8
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#define KEY_DDC_ACCS_DONE 0x02
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#define DDC_NO_ACK 0x50
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#define LT9611_4LANES 0
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struct lt9611 {
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struct device *dev;
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struct drm_bridge bridge;
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struct drm_bridge *next_bridge;
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struct regmap *regmap;
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struct device_node *dsi0_node;
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struct device_node *dsi1_node;
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struct mipi_dsi_device *dsi0;
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struct mipi_dsi_device *dsi1;
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struct platform_device *audio_pdev;
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bool ac_mode;
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struct gpio_desc *reset_gpio;
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struct gpio_desc *enable_gpio;
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bool power_on;
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bool sleep;
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struct regulator_bulk_data supplies[2];
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struct i2c_client *client;
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enum drm_connector_status status;
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u8 edid_buf[EDID_SEG_SIZE];
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};
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#define LT9611_PAGE_CONTROL 0xff
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static const struct regmap_range_cfg lt9611_ranges[] = {
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{
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.name = "register_range",
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.range_min = 0,
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.range_max = 0x85ff,
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.selector_reg = LT9611_PAGE_CONTROL,
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.selector_mask = 0xff,
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.selector_shift = 0,
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.window_start = 0,
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.window_len = 0x100,
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},
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};
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static const struct regmap_config lt9611_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = 0xffff,
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.ranges = lt9611_ranges,
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.num_ranges = ARRAY_SIZE(lt9611_ranges),
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};
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static struct lt9611 *bridge_to_lt9611(struct drm_bridge *bridge)
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{
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return container_of(bridge, struct lt9611, bridge);
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}
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static int lt9611_mipi_input_analog(struct lt9611 *lt9611)
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{
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const struct reg_sequence reg_cfg[] = {
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{ 0x8106, 0x40 }, /* port A rx current */
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{ 0x810a, 0xfe }, /* port A ldo voltage set */
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{ 0x810b, 0xbf }, /* enable port A lprx */
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{ 0x8111, 0x40 }, /* port B rx current */
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{ 0x8115, 0xfe }, /* port B ldo voltage set */
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{ 0x8116, 0xbf }, /* enable port B lprx */
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{ 0x811c, 0x03 }, /* PortA clk lane no-LP mode */
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{ 0x8120, 0x03 }, /* PortB clk lane with-LP mode */
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};
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return regmap_multi_reg_write(lt9611->regmap, reg_cfg, ARRAY_SIZE(reg_cfg));
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}
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static int lt9611_mipi_input_digital(struct lt9611 *lt9611,
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const struct drm_display_mode *mode)
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{
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struct reg_sequence reg_cfg[] = {
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{ 0x8300, LT9611_4LANES },
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{ 0x830a, 0x00 },
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{ 0x824f, 0x80 },
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{ 0x8250, 0x10 },
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{ 0x8302, 0x0a },
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{ 0x8306, 0x0a },
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};
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if (lt9611->dsi1_node)
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reg_cfg[1].def = 0x03;
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return regmap_multi_reg_write(lt9611->regmap, reg_cfg, ARRAY_SIZE(reg_cfg));
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}
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static void lt9611_mipi_video_setup(struct lt9611 *lt9611,
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const struct drm_display_mode *mode)
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{
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u32 h_total, hactive, hsync_len, hfront_porch, hsync_porch;
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u32 v_total, vactive, vsync_len, vfront_porch, vsync_porch;
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h_total = mode->htotal;
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v_total = mode->vtotal;
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hactive = mode->hdisplay;
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hsync_len = mode->hsync_end - mode->hsync_start;
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hfront_porch = mode->hsync_start - mode->hdisplay;
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hsync_porch = mode->htotal - mode->hsync_start;
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vactive = mode->vdisplay;
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vsync_len = mode->vsync_end - mode->vsync_start;
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vfront_porch = mode->vsync_start - mode->vdisplay;
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vsync_porch = mode->vtotal - mode->vsync_start;
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regmap_write(lt9611->regmap, 0x830d, (u8)(v_total / 256));
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regmap_write(lt9611->regmap, 0x830e, (u8)(v_total % 256));
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regmap_write(lt9611->regmap, 0x830f, (u8)(vactive / 256));
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regmap_write(lt9611->regmap, 0x8310, (u8)(vactive % 256));
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regmap_write(lt9611->regmap, 0x8311, (u8)(h_total / 256));
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regmap_write(lt9611->regmap, 0x8312, (u8)(h_total % 256));
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regmap_write(lt9611->regmap, 0x8313, (u8)(hactive / 256));
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regmap_write(lt9611->regmap, 0x8314, (u8)(hactive % 256));
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regmap_write(lt9611->regmap, 0x8315, (u8)(vsync_len % 256));
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regmap_write(lt9611->regmap, 0x8316, (u8)(hsync_len % 256));
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regmap_write(lt9611->regmap, 0x8317, (u8)(vfront_porch % 256));
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regmap_write(lt9611->regmap, 0x8318, (u8)(vsync_porch % 256));
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regmap_write(lt9611->regmap, 0x8319, (u8)(hfront_porch % 256));
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regmap_write(lt9611->regmap, 0x831a, (u8)(hsync_porch / 256) |
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((hfront_porch / 256) << 4));
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regmap_write(lt9611->regmap, 0x831b, (u8)(hsync_porch % 256));
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}
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static void lt9611_pcr_setup(struct lt9611 *lt9611, const struct drm_display_mode *mode, unsigned int postdiv)
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{
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unsigned int pcr_m = mode->clock * 5 * postdiv / 27000;
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const struct reg_sequence reg_cfg[] = {
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{ 0x830b, 0x01 },
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{ 0x830c, 0x10 },
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{ 0x8348, 0x00 },
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{ 0x8349, 0x81 },
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/* stage 1 */
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{ 0x8321, 0x4a },
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{ 0x8324, 0x71 },
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{ 0x8325, 0x30 },
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{ 0x832a, 0x01 },
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/* stage 2 */
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{ 0x834a, 0x40 },
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/* MK limit */
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{ 0x832d, 0x38 },
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{ 0x8331, 0x08 },
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};
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u8 pol = 0x10;
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if (mode->flags & DRM_MODE_FLAG_NHSYNC)
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pol |= 0x2;
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if (mode->flags & DRM_MODE_FLAG_NVSYNC)
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pol |= 0x1;
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regmap_write(lt9611->regmap, 0x831d, pol);
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regmap_multi_reg_write(lt9611->regmap, reg_cfg, ARRAY_SIZE(reg_cfg));
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if (lt9611->dsi1_node) {
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unsigned int hact = mode->hdisplay;
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hact >>= 2;
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hact += 0x50;
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hact = min(hact, 0x3e0U);
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regmap_write(lt9611->regmap, 0x830b, hact / 256);
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regmap_write(lt9611->regmap, 0x830c, hact % 256);
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regmap_write(lt9611->regmap, 0x8348, hact / 256);
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regmap_write(lt9611->regmap, 0x8349, hact % 256);
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}
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regmap_write(lt9611->regmap, 0x8326, pcr_m);
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/* pcr rst */
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regmap_write(lt9611->regmap, 0x8011, 0x5a);
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regmap_write(lt9611->regmap, 0x8011, 0xfa);
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}
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static int lt9611_pll_setup(struct lt9611 *lt9611, const struct drm_display_mode *mode, unsigned int *postdiv)
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{
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unsigned int pclk = mode->clock;
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const struct reg_sequence reg_cfg[] = {
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/* txpll init */
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{ 0x8123, 0x40 },
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{ 0x8124, 0x64 },
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{ 0x8125, 0x80 },
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{ 0x8126, 0x55 },
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{ 0x812c, 0x37 },
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{ 0x812f, 0x01 },
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{ 0x8126, 0x55 },
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{ 0x8127, 0x66 },
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{ 0x8128, 0x88 },
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{ 0x812a, 0x20 },
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};
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regmap_multi_reg_write(lt9611->regmap, reg_cfg, ARRAY_SIZE(reg_cfg));
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if (pclk > 150000) {
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regmap_write(lt9611->regmap, 0x812d, 0x88);
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*postdiv = 1;
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} else if (pclk > 70000) {
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regmap_write(lt9611->regmap, 0x812d, 0x99);
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*postdiv = 2;
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} else {
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regmap_write(lt9611->regmap, 0x812d, 0xaa);
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*postdiv = 4;
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}
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/*
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* first divide pclk by 2 first
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* - write divide by 64k to 19:16 bits which means shift by 17
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* - write divide by 256 to 15:8 bits which means shift by 9
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* - write remainder to 7:0 bits, which means shift by 1
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*/
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regmap_write(lt9611->regmap, 0x82e3, pclk >> 17); /* pclk[19:16] */
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regmap_write(lt9611->regmap, 0x82e4, pclk >> 9); /* pclk[15:8] */
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regmap_write(lt9611->regmap, 0x82e5, pclk >> 1); /* pclk[7:0] */
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regmap_write(lt9611->regmap, 0x82de, 0x20);
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regmap_write(lt9611->regmap, 0x82de, 0xe0);
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regmap_write(lt9611->regmap, 0x8016, 0xf1);
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regmap_write(lt9611->regmap, 0x8016, 0xf3);
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return 0;
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}
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static int lt9611_read_video_check(struct lt9611 *lt9611, unsigned int reg)
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{
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unsigned int temp, temp2;
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int ret;
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ret = regmap_read(lt9611->regmap, reg, &temp);
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if (ret)
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return ret;
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temp <<= 8;
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ret = regmap_read(lt9611->regmap, reg + 1, &temp2);
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if (ret)
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return ret;
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return (temp + temp2);
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}
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static int lt9611_video_check(struct lt9611 *lt9611)
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{
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u32 v_total, vactive, hactive_a, hactive_b, h_total_sysclk;
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int temp;
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/* top module video check */
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/* vactive */
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temp = lt9611_read_video_check(lt9611, 0x8282);
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if (temp < 0)
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goto end;
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vactive = temp;
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/* v_total */
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temp = lt9611_read_video_check(lt9611, 0x826c);
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if (temp < 0)
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goto end;
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v_total = temp;
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/* h_total_sysclk */
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temp = lt9611_read_video_check(lt9611, 0x8286);
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if (temp < 0)
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goto end;
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h_total_sysclk = temp;
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/* hactive_a */
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temp = lt9611_read_video_check(lt9611, 0x8382);
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if (temp < 0)
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goto end;
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hactive_a = temp / 3;
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/* hactive_b */
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temp = lt9611_read_video_check(lt9611, 0x8386);
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if (temp < 0)
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goto end;
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hactive_b = temp / 3;
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dev_info(lt9611->dev,
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"video check: hactive_a=%d, hactive_b=%d, vactive=%d, v_total=%d, h_total_sysclk=%d\n",
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hactive_a, hactive_b, vactive, v_total, h_total_sysclk);
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return 0;
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end:
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dev_err(lt9611->dev, "read video check error\n");
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return temp;
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}
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static void lt9611_hdmi_set_infoframes(struct lt9611 *lt9611,
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struct drm_connector *connector,
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struct drm_display_mode *mode)
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{
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union hdmi_infoframe infoframe;
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ssize_t len;
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u8 iframes = 0x0a; /* UD1 infoframe */
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u8 buf[32];
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int ret;
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int i;
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ret = drm_hdmi_avi_infoframe_from_display_mode(&infoframe.avi,
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connector,
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mode);
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if (ret < 0)
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goto out;
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len = hdmi_infoframe_pack(&infoframe, buf, sizeof(buf));
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if (len < 0)
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goto out;
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for (i = 0; i < len; i++)
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regmap_write(lt9611->regmap, 0x8440 + i, buf[i]);
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ret = drm_hdmi_vendor_infoframe_from_display_mode(&infoframe.vendor.hdmi,
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connector,
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mode);
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if (ret < 0)
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goto out;
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len = hdmi_infoframe_pack(&infoframe, buf, sizeof(buf));
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if (len < 0)
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goto out;
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for (i = 0; i < len; i++)
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regmap_write(lt9611->regmap, 0x8474 + i, buf[i]);
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iframes |= 0x20;
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out:
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regmap_write(lt9611->regmap, 0x843d, iframes); /* UD1 infoframe */
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}
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static void lt9611_hdmi_tx_digital(struct lt9611 *lt9611, bool is_hdmi)
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{
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if (is_hdmi)
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regmap_write(lt9611->regmap, 0x82d6, 0x8c);
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else
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regmap_write(lt9611->regmap, 0x82d6, 0x0c);
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regmap_write(lt9611->regmap, 0x82d7, 0x04);
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}
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static void lt9611_hdmi_tx_phy(struct lt9611 *lt9611)
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{
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struct reg_sequence reg_cfg[] = {
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{ 0x8130, 0x6a },
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{ 0x8131, 0x44 }, /* HDMI DC mode */
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{ 0x8132, 0x4a },
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{ 0x8133, 0x0b },
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{ 0x8134, 0x00 },
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{ 0x8135, 0x00 },
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{ 0x8136, 0x00 },
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{ 0x8137, 0x44 },
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{ 0x813f, 0x0f },
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{ 0x8140, 0xa0 },
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{ 0x8141, 0xa0 },
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{ 0x8142, 0xa0 },
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{ 0x8143, 0xa0 },
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{ 0x8144, 0x0a },
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};
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/* HDMI AC mode */
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if (lt9611->ac_mode)
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reg_cfg[2].def = 0x73;
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regmap_multi_reg_write(lt9611->regmap, reg_cfg, ARRAY_SIZE(reg_cfg));
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}
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static irqreturn_t lt9611_irq_thread_handler(int irq, void *dev_id)
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{
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struct lt9611 *lt9611 = dev_id;
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unsigned int irq_flag0 = 0;
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unsigned int irq_flag3 = 0;
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regmap_read(lt9611->regmap, 0x820f, &irq_flag3);
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regmap_read(lt9611->regmap, 0x820c, &irq_flag0);
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/* hpd changed low */
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if (irq_flag3 & 0x80) {
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dev_info(lt9611->dev, "hdmi cable disconnected\n");
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regmap_write(lt9611->regmap, 0x8207, 0xbf);
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regmap_write(lt9611->regmap, 0x8207, 0x3f);
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}
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/* hpd changed high */
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if (irq_flag3 & 0x40) {
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dev_info(lt9611->dev, "hdmi cable connected\n");
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regmap_write(lt9611->regmap, 0x8207, 0x7f);
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regmap_write(lt9611->regmap, 0x8207, 0x3f);
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}
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if (irq_flag3 & 0xc0 && lt9611->bridge.dev)
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drm_kms_helper_hotplug_event(lt9611->bridge.dev);
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/* video input changed */
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if (irq_flag0 & 0x01) {
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dev_info(lt9611->dev, "video input changed\n");
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regmap_write(lt9611->regmap, 0x829e, 0xff);
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regmap_write(lt9611->regmap, 0x829e, 0xf7);
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regmap_write(lt9611->regmap, 0x8204, 0xff);
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regmap_write(lt9611->regmap, 0x8204, 0xfe);
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}
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return IRQ_HANDLED;
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}
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static void lt9611_enable_hpd_interrupts(struct lt9611 *lt9611)
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{
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unsigned int val;
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regmap_read(lt9611->regmap, 0x8203, &val);
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val &= ~0xc0;
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regmap_write(lt9611->regmap, 0x8203, val);
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regmap_write(lt9611->regmap, 0x8207, 0xff); /* clear */
|
|
regmap_write(lt9611->regmap, 0x8207, 0x3f);
|
|
}
|
|
|
|
static void lt9611_sleep_setup(struct lt9611 *lt9611)
|
|
{
|
|
const struct reg_sequence sleep_setup[] = {
|
|
{ 0x8024, 0x76 },
|
|
{ 0x8023, 0x01 },
|
|
{ 0x8157, 0x03 }, /* set addr pin as output */
|
|
{ 0x8149, 0x0b },
|
|
|
|
{ 0x8102, 0x48 }, /* MIPI Rx power down */
|
|
{ 0x8123, 0x80 },
|
|
{ 0x8130, 0x00 },
|
|
{ 0x8011, 0x0a },
|
|
};
|
|
|
|
regmap_multi_reg_write(lt9611->regmap,
|
|
sleep_setup, ARRAY_SIZE(sleep_setup));
|
|
lt9611->sleep = true;
|
|
}
|
|
|
|
static int lt9611_power_on(struct lt9611 *lt9611)
|
|
{
|
|
int ret;
|
|
const struct reg_sequence seq[] = {
|
|
/* LT9611_System_Init */
|
|
{ 0x8101, 0x18 }, /* sel xtal clock */
|
|
|
|
/* timer for frequency meter */
|
|
{ 0x821b, 0x69 }, /* timer 2 */
|
|
{ 0x821c, 0x78 },
|
|
{ 0x82cb, 0x69 }, /* timer 1 */
|
|
{ 0x82cc, 0x78 },
|
|
|
|
/* irq init */
|
|
{ 0x8251, 0x01 },
|
|
{ 0x8258, 0x0a }, /* hpd irq */
|
|
{ 0x8259, 0x80 }, /* hpd debounce width */
|
|
{ 0x829e, 0xf7 }, /* video check irq */
|
|
|
|
/* power consumption for work */
|
|
{ 0x8004, 0xf0 },
|
|
{ 0x8006, 0xf0 },
|
|
{ 0x800a, 0x80 },
|
|
{ 0x800b, 0x40 },
|
|
{ 0x800d, 0xef },
|
|
{ 0x8011, 0xfa },
|
|
};
|
|
|
|
if (lt9611->power_on)
|
|
return 0;
|
|
|
|
ret = regmap_multi_reg_write(lt9611->regmap, seq, ARRAY_SIZE(seq));
|
|
if (!ret)
|
|
lt9611->power_on = true;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int lt9611_power_off(struct lt9611 *lt9611)
|
|
{
|
|
int ret;
|
|
|
|
ret = regmap_write(lt9611->regmap, 0x8130, 0x6a);
|
|
if (!ret)
|
|
lt9611->power_on = false;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void lt9611_reset(struct lt9611 *lt9611)
|
|
{
|
|
gpiod_set_value_cansleep(lt9611->reset_gpio, 1);
|
|
msleep(20);
|
|
|
|
gpiod_set_value_cansleep(lt9611->reset_gpio, 0);
|
|
msleep(20);
|
|
|
|
gpiod_set_value_cansleep(lt9611->reset_gpio, 1);
|
|
msleep(100);
|
|
}
|
|
|
|
static void lt9611_assert_5v(struct lt9611 *lt9611)
|
|
{
|
|
if (!lt9611->enable_gpio)
|
|
return;
|
|
|
|
gpiod_set_value_cansleep(lt9611->enable_gpio, 1);
|
|
msleep(20);
|
|
}
|
|
|
|
static int lt9611_regulator_init(struct lt9611 *lt9611)
|
|
{
|
|
int ret;
|
|
|
|
lt9611->supplies[0].supply = "vdd";
|
|
lt9611->supplies[1].supply = "vcc";
|
|
|
|
ret = devm_regulator_bulk_get(lt9611->dev, 2, lt9611->supplies);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return regulator_set_load(lt9611->supplies[0].consumer, 300000);
|
|
}
|
|
|
|
static int lt9611_regulator_enable(struct lt9611 *lt9611)
|
|
{
|
|
int ret;
|
|
|
|
ret = regulator_enable(lt9611->supplies[0].consumer);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
usleep_range(1000, 10000);
|
|
|
|
ret = regulator_enable(lt9611->supplies[1].consumer);
|
|
if (ret < 0) {
|
|
regulator_disable(lt9611->supplies[0].consumer);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static enum drm_connector_status lt9611_bridge_detect(struct drm_bridge *bridge)
|
|
{
|
|
struct lt9611 *lt9611 = bridge_to_lt9611(bridge);
|
|
unsigned int reg_val = 0;
|
|
int connected = 0;
|
|
|
|
regmap_read(lt9611->regmap, 0x825e, ®_val);
|
|
connected = (reg_val & (BIT(2) | BIT(0)));
|
|
|
|
lt9611->status = connected ? connector_status_connected :
|
|
connector_status_disconnected;
|
|
|
|
return lt9611->status;
|
|
}
|
|
|
|
static int lt9611_read_edid(struct lt9611 *lt9611)
|
|
{
|
|
unsigned int temp;
|
|
int ret = 0;
|
|
int i, j;
|
|
|
|
/* memset to clear old buffer, if any */
|
|
memset(lt9611->edid_buf, 0, sizeof(lt9611->edid_buf));
|
|
|
|
regmap_write(lt9611->regmap, 0x8503, 0xc9);
|
|
|
|
/* 0xA0 is EDID device address */
|
|
regmap_write(lt9611->regmap, 0x8504, 0xa0);
|
|
/* 0x00 is EDID offset address */
|
|
regmap_write(lt9611->regmap, 0x8505, 0x00);
|
|
|
|
/* length for read */
|
|
regmap_write(lt9611->regmap, 0x8506, EDID_LEN);
|
|
regmap_write(lt9611->regmap, 0x8514, 0x7f);
|
|
|
|
for (i = 0; i < EDID_LOOP; i++) {
|
|
/* offset address */
|
|
regmap_write(lt9611->regmap, 0x8505, i * EDID_LEN);
|
|
regmap_write(lt9611->regmap, 0x8507, 0x36);
|
|
regmap_write(lt9611->regmap, 0x8507, 0x31);
|
|
regmap_write(lt9611->regmap, 0x8507, 0x37);
|
|
usleep_range(5000, 10000);
|
|
|
|
regmap_read(lt9611->regmap, 0x8540, &temp);
|
|
|
|
if (temp & KEY_DDC_ACCS_DONE) {
|
|
for (j = 0; j < EDID_LEN; j++) {
|
|
regmap_read(lt9611->regmap, 0x8583, &temp);
|
|
lt9611->edid_buf[i * EDID_LEN + j] = temp;
|
|
}
|
|
|
|
} else if (temp & DDC_NO_ACK) { /* DDC No Ack or Abitration lost */
|
|
dev_err(lt9611->dev, "read edid failed: no ack\n");
|
|
ret = -EIO;
|
|
goto end;
|
|
|
|
} else {
|
|
dev_err(lt9611->dev, "read edid failed: access not done\n");
|
|
ret = -EIO;
|
|
goto end;
|
|
}
|
|
}
|
|
|
|
end:
|
|
regmap_write(lt9611->regmap, 0x8507, 0x1f);
|
|
return ret;
|
|
}
|
|
|
|
static int
|
|
lt9611_get_edid_block(void *data, u8 *buf, unsigned int block, size_t len)
|
|
{
|
|
struct lt9611 *lt9611 = data;
|
|
int ret;
|
|
|
|
if (len > 128)
|
|
return -EINVAL;
|
|
|
|
/* supports up to 1 extension block */
|
|
/* TODO: add support for more extension blocks */
|
|
if (block > 1)
|
|
return -EINVAL;
|
|
|
|
if (block == 0) {
|
|
ret = lt9611_read_edid(lt9611);
|
|
if (ret) {
|
|
dev_err(lt9611->dev, "edid read failed\n");
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
block %= 2;
|
|
memcpy(buf, lt9611->edid_buf + (block * 128), len);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* bridge funcs */
|
|
static void
|
|
lt9611_bridge_atomic_enable(struct drm_bridge *bridge,
|
|
struct drm_bridge_state *old_bridge_state)
|
|
{
|
|
struct lt9611 *lt9611 = bridge_to_lt9611(bridge);
|
|
struct drm_atomic_state *state = old_bridge_state->base.state;
|
|
struct drm_connector *connector;
|
|
struct drm_connector_state *conn_state;
|
|
struct drm_crtc_state *crtc_state;
|
|
struct drm_display_mode *mode;
|
|
unsigned int postdiv;
|
|
|
|
connector = drm_atomic_get_new_connector_for_encoder(state, bridge->encoder);
|
|
if (WARN_ON(!connector))
|
|
return;
|
|
|
|
conn_state = drm_atomic_get_new_connector_state(state, connector);
|
|
if (WARN_ON(!conn_state))
|
|
return;
|
|
|
|
crtc_state = drm_atomic_get_new_crtc_state(state, conn_state->crtc);
|
|
if (WARN_ON(!crtc_state))
|
|
return;
|
|
|
|
mode = &crtc_state->adjusted_mode;
|
|
|
|
lt9611_mipi_input_digital(lt9611, mode);
|
|
lt9611_pll_setup(lt9611, mode, &postdiv);
|
|
lt9611_mipi_video_setup(lt9611, mode);
|
|
lt9611_pcr_setup(lt9611, mode, postdiv);
|
|
|
|
if (lt9611_power_on(lt9611)) {
|
|
dev_err(lt9611->dev, "power on failed\n");
|
|
return;
|
|
}
|
|
|
|
lt9611_mipi_input_analog(lt9611);
|
|
lt9611_hdmi_set_infoframes(lt9611, connector, mode);
|
|
lt9611_hdmi_tx_digital(lt9611, connector->display_info.is_hdmi);
|
|
lt9611_hdmi_tx_phy(lt9611);
|
|
|
|
msleep(500);
|
|
|
|
lt9611_video_check(lt9611);
|
|
|
|
/* Enable HDMI output */
|
|
regmap_write(lt9611->regmap, 0x8130, 0xea);
|
|
}
|
|
|
|
static void
|
|
lt9611_bridge_atomic_disable(struct drm_bridge *bridge,
|
|
struct drm_bridge_state *old_bridge_state)
|
|
{
|
|
struct lt9611 *lt9611 = bridge_to_lt9611(bridge);
|
|
int ret;
|
|
|
|
/* Disable HDMI output */
|
|
ret = regmap_write(lt9611->regmap, 0x8130, 0x6a);
|
|
if (ret) {
|
|
dev_err(lt9611->dev, "video on failed\n");
|
|
return;
|
|
}
|
|
|
|
if (lt9611_power_off(lt9611)) {
|
|
dev_err(lt9611->dev, "power on failed\n");
|
|
return;
|
|
}
|
|
}
|
|
|
|
static struct mipi_dsi_device *lt9611_attach_dsi(struct lt9611 *lt9611,
|
|
struct device_node *dsi_node)
|
|
{
|
|
const struct mipi_dsi_device_info info = { "lt9611", 0, lt9611->dev->of_node};
|
|
struct mipi_dsi_device *dsi;
|
|
struct mipi_dsi_host *host;
|
|
struct device *dev = lt9611->dev;
|
|
int ret;
|
|
|
|
host = of_find_mipi_dsi_host_by_node(dsi_node);
|
|
if (!host) {
|
|
dev_err(lt9611->dev, "failed to find dsi host\n");
|
|
return ERR_PTR(-EPROBE_DEFER);
|
|
}
|
|
|
|
dsi = devm_mipi_dsi_device_register_full(dev, host, &info);
|
|
if (IS_ERR(dsi)) {
|
|
dev_err(lt9611->dev, "failed to create dsi device\n");
|
|
return dsi;
|
|
}
|
|
|
|
dsi->lanes = 4;
|
|
dsi->format = MIPI_DSI_FMT_RGB888;
|
|
dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
|
|
MIPI_DSI_MODE_VIDEO_HSE;
|
|
|
|
ret = devm_mipi_dsi_attach(dev, dsi);
|
|
if (ret < 0) {
|
|
dev_err(dev, "failed to attach dsi to host\n");
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
return dsi;
|
|
}
|
|
|
|
static int lt9611_bridge_attach(struct drm_bridge *bridge,
|
|
enum drm_bridge_attach_flags flags)
|
|
{
|
|
struct lt9611 *lt9611 = bridge_to_lt9611(bridge);
|
|
|
|
return drm_bridge_attach(bridge->encoder, lt9611->next_bridge,
|
|
bridge, flags);
|
|
}
|
|
|
|
static enum drm_mode_status lt9611_bridge_mode_valid(struct drm_bridge *bridge,
|
|
const struct drm_display_info *info,
|
|
const struct drm_display_mode *mode)
|
|
{
|
|
struct lt9611 *lt9611 = bridge_to_lt9611(bridge);
|
|
|
|
if (mode->hdisplay > 3840)
|
|
return MODE_BAD_HVALUE;
|
|
|
|
if (mode->vdisplay > 2160)
|
|
return MODE_BAD_VVALUE;
|
|
|
|
if (mode->hdisplay == 3840 &&
|
|
mode->vdisplay == 2160 &&
|
|
drm_mode_vrefresh(mode) > 30)
|
|
return MODE_CLOCK_HIGH;
|
|
|
|
if (mode->hdisplay > 2000 && !lt9611->dsi1_node)
|
|
return MODE_PANEL;
|
|
else
|
|
return MODE_OK;
|
|
}
|
|
|
|
static void lt9611_bridge_atomic_pre_enable(struct drm_bridge *bridge,
|
|
struct drm_bridge_state *old_bridge_state)
|
|
{
|
|
struct lt9611 *lt9611 = bridge_to_lt9611(bridge);
|
|
static const struct reg_sequence reg_cfg[] = {
|
|
{ 0x8102, 0x12 },
|
|
{ 0x8123, 0x40 },
|
|
{ 0x8130, 0xea },
|
|
{ 0x8011, 0xfa },
|
|
};
|
|
|
|
if (!lt9611->sleep)
|
|
return;
|
|
|
|
regmap_multi_reg_write(lt9611->regmap,
|
|
reg_cfg, ARRAY_SIZE(reg_cfg));
|
|
|
|
lt9611->sleep = false;
|
|
}
|
|
|
|
static void
|
|
lt9611_bridge_atomic_post_disable(struct drm_bridge *bridge,
|
|
struct drm_bridge_state *old_bridge_state)
|
|
{
|
|
struct lt9611 *lt9611 = bridge_to_lt9611(bridge);
|
|
|
|
lt9611_sleep_setup(lt9611);
|
|
}
|
|
|
|
static struct edid *lt9611_bridge_get_edid(struct drm_bridge *bridge,
|
|
struct drm_connector *connector)
|
|
{
|
|
struct lt9611 *lt9611 = bridge_to_lt9611(bridge);
|
|
|
|
lt9611_power_on(lt9611);
|
|
return drm_do_get_edid(connector, lt9611_get_edid_block, lt9611);
|
|
}
|
|
|
|
static void lt9611_bridge_hpd_enable(struct drm_bridge *bridge)
|
|
{
|
|
struct lt9611 *lt9611 = bridge_to_lt9611(bridge);
|
|
|
|
lt9611_enable_hpd_interrupts(lt9611);
|
|
}
|
|
|
|
#define MAX_INPUT_SEL_FORMATS 1
|
|
|
|
static u32 *
|
|
lt9611_atomic_get_input_bus_fmts(struct drm_bridge *bridge,
|
|
struct drm_bridge_state *bridge_state,
|
|
struct drm_crtc_state *crtc_state,
|
|
struct drm_connector_state *conn_state,
|
|
u32 output_fmt,
|
|
unsigned int *num_input_fmts)
|
|
{
|
|
u32 *input_fmts;
|
|
|
|
*num_input_fmts = 0;
|
|
|
|
input_fmts = kcalloc(MAX_INPUT_SEL_FORMATS, sizeof(*input_fmts),
|
|
GFP_KERNEL);
|
|
if (!input_fmts)
|
|
return NULL;
|
|
|
|
/* This is the DSI-end bus format */
|
|
input_fmts[0] = MEDIA_BUS_FMT_RGB888_1X24;
|
|
*num_input_fmts = 1;
|
|
|
|
return input_fmts;
|
|
}
|
|
|
|
static const struct drm_bridge_funcs lt9611_bridge_funcs = {
|
|
.attach = lt9611_bridge_attach,
|
|
.mode_valid = lt9611_bridge_mode_valid,
|
|
.detect = lt9611_bridge_detect,
|
|
.get_edid = lt9611_bridge_get_edid,
|
|
.hpd_enable = lt9611_bridge_hpd_enable,
|
|
|
|
.atomic_pre_enable = lt9611_bridge_atomic_pre_enable,
|
|
.atomic_enable = lt9611_bridge_atomic_enable,
|
|
.atomic_disable = lt9611_bridge_atomic_disable,
|
|
.atomic_post_disable = lt9611_bridge_atomic_post_disable,
|
|
.atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
|
|
.atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
|
|
.atomic_reset = drm_atomic_helper_bridge_reset,
|
|
.atomic_get_input_bus_fmts = lt9611_atomic_get_input_bus_fmts,
|
|
};
|
|
|
|
static int lt9611_parse_dt(struct device *dev,
|
|
struct lt9611 *lt9611)
|
|
{
|
|
lt9611->dsi0_node = of_graph_get_remote_node(dev->of_node, 0, -1);
|
|
if (!lt9611->dsi0_node) {
|
|
dev_err(lt9611->dev, "failed to get remote node for primary dsi\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
lt9611->dsi1_node = of_graph_get_remote_node(dev->of_node, 1, -1);
|
|
|
|
lt9611->ac_mode = of_property_read_bool(dev->of_node, "lt,ac-mode");
|
|
|
|
return drm_of_find_panel_or_bridge(dev->of_node, 2, -1, NULL, <9611->next_bridge);
|
|
}
|
|
|
|
static int lt9611_gpio_init(struct lt9611 *lt9611)
|
|
{
|
|
struct device *dev = lt9611->dev;
|
|
|
|
lt9611->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
|
|
if (IS_ERR(lt9611->reset_gpio)) {
|
|
dev_err(dev, "failed to acquire reset gpio\n");
|
|
return PTR_ERR(lt9611->reset_gpio);
|
|
}
|
|
|
|
lt9611->enable_gpio = devm_gpiod_get_optional(dev, "enable",
|
|
GPIOD_OUT_LOW);
|
|
if (IS_ERR(lt9611->enable_gpio)) {
|
|
dev_err(dev, "failed to acquire enable gpio\n");
|
|
return PTR_ERR(lt9611->enable_gpio);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int lt9611_read_device_rev(struct lt9611 *lt9611)
|
|
{
|
|
unsigned int rev;
|
|
int ret;
|
|
|
|
regmap_write(lt9611->regmap, 0x80ee, 0x01);
|
|
ret = regmap_read(lt9611->regmap, 0x8002, &rev);
|
|
if (ret)
|
|
dev_err(lt9611->dev, "failed to read revision: %d\n", ret);
|
|
else
|
|
dev_info(lt9611->dev, "LT9611 revision: 0x%x\n", rev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int lt9611_hdmi_hw_params(struct device *dev, void *data,
|
|
struct hdmi_codec_daifmt *fmt,
|
|
struct hdmi_codec_params *hparms)
|
|
{
|
|
struct lt9611 *lt9611 = data;
|
|
|
|
if (hparms->sample_rate == 48000)
|
|
regmap_write(lt9611->regmap, 0x840f, 0x2b);
|
|
else if (hparms->sample_rate == 96000)
|
|
regmap_write(lt9611->regmap, 0x840f, 0xab);
|
|
else
|
|
return -EINVAL;
|
|
|
|
regmap_write(lt9611->regmap, 0x8435, 0x00);
|
|
regmap_write(lt9611->regmap, 0x8436, 0x18);
|
|
regmap_write(lt9611->regmap, 0x8437, 0x00);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int lt9611_audio_startup(struct device *dev, void *data)
|
|
{
|
|
struct lt9611 *lt9611 = data;
|
|
|
|
regmap_write(lt9611->regmap, 0x82d6, 0x8c);
|
|
regmap_write(lt9611->regmap, 0x82d7, 0x04);
|
|
|
|
regmap_write(lt9611->regmap, 0x8406, 0x08);
|
|
regmap_write(lt9611->regmap, 0x8407, 0x10);
|
|
|
|
regmap_write(lt9611->regmap, 0x8434, 0xd5);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void lt9611_audio_shutdown(struct device *dev, void *data)
|
|
{
|
|
struct lt9611 *lt9611 = data;
|
|
|
|
regmap_write(lt9611->regmap, 0x8406, 0x00);
|
|
regmap_write(lt9611->regmap, 0x8407, 0x00);
|
|
}
|
|
|
|
static int lt9611_hdmi_i2s_get_dai_id(struct snd_soc_component *component,
|
|
struct device_node *endpoint)
|
|
{
|
|
struct of_endpoint of_ep;
|
|
int ret;
|
|
|
|
ret = of_graph_parse_endpoint(endpoint, &of_ep);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/*
|
|
* HDMI sound should be located as reg = <2>
|
|
* Then, it is sound port 0
|
|
*/
|
|
if (of_ep.port == 2)
|
|
return 0;
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static const struct hdmi_codec_ops lt9611_codec_ops = {
|
|
.hw_params = lt9611_hdmi_hw_params,
|
|
.audio_shutdown = lt9611_audio_shutdown,
|
|
.audio_startup = lt9611_audio_startup,
|
|
.get_dai_id = lt9611_hdmi_i2s_get_dai_id,
|
|
};
|
|
|
|
static struct hdmi_codec_pdata codec_data = {
|
|
.ops = <9611_codec_ops,
|
|
.max_i2s_channels = 8,
|
|
.i2s = 1,
|
|
};
|
|
|
|
static int lt9611_audio_init(struct device *dev, struct lt9611 *lt9611)
|
|
{
|
|
codec_data.data = lt9611;
|
|
lt9611->audio_pdev =
|
|
platform_device_register_data(dev, HDMI_CODEC_DRV_NAME,
|
|
PLATFORM_DEVID_AUTO,
|
|
&codec_data, sizeof(codec_data));
|
|
|
|
return PTR_ERR_OR_ZERO(lt9611->audio_pdev);
|
|
}
|
|
|
|
static void lt9611_audio_exit(struct lt9611 *lt9611)
|
|
{
|
|
if (lt9611->audio_pdev) {
|
|
platform_device_unregister(lt9611->audio_pdev);
|
|
lt9611->audio_pdev = NULL;
|
|
}
|
|
}
|
|
|
|
static int lt9611_probe(struct i2c_client *client)
|
|
{
|
|
struct lt9611 *lt9611;
|
|
struct device *dev = &client->dev;
|
|
int ret;
|
|
|
|
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
|
|
dev_err(dev, "device doesn't support I2C\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
lt9611 = devm_kzalloc(dev, sizeof(*lt9611), GFP_KERNEL);
|
|
if (!lt9611)
|
|
return -ENOMEM;
|
|
|
|
lt9611->dev = dev;
|
|
lt9611->client = client;
|
|
lt9611->sleep = false;
|
|
|
|
lt9611->regmap = devm_regmap_init_i2c(client, <9611_regmap_config);
|
|
if (IS_ERR(lt9611->regmap)) {
|
|
dev_err(lt9611->dev, "regmap i2c init failed\n");
|
|
return PTR_ERR(lt9611->regmap);
|
|
}
|
|
|
|
ret = lt9611_parse_dt(dev, lt9611);
|
|
if (ret) {
|
|
dev_err(dev, "failed to parse device tree\n");
|
|
return ret;
|
|
}
|
|
|
|
ret = lt9611_gpio_init(lt9611);
|
|
if (ret < 0)
|
|
goto err_of_put;
|
|
|
|
ret = lt9611_regulator_init(lt9611);
|
|
if (ret < 0)
|
|
goto err_of_put;
|
|
|
|
lt9611_assert_5v(lt9611);
|
|
|
|
ret = lt9611_regulator_enable(lt9611);
|
|
if (ret)
|
|
goto err_of_put;
|
|
|
|
lt9611_reset(lt9611);
|
|
|
|
ret = lt9611_read_device_rev(lt9611);
|
|
if (ret) {
|
|
dev_err(dev, "failed to read chip rev\n");
|
|
goto err_disable_regulators;
|
|
}
|
|
|
|
ret = devm_request_threaded_irq(dev, client->irq, NULL,
|
|
lt9611_irq_thread_handler,
|
|
IRQF_ONESHOT, "lt9611", lt9611);
|
|
if (ret) {
|
|
dev_err(dev, "failed to request irq\n");
|
|
goto err_disable_regulators;
|
|
}
|
|
|
|
i2c_set_clientdata(client, lt9611);
|
|
|
|
lt9611->bridge.funcs = <9611_bridge_funcs;
|
|
lt9611->bridge.of_node = client->dev.of_node;
|
|
lt9611->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID |
|
|
DRM_BRIDGE_OP_HPD | DRM_BRIDGE_OP_MODES;
|
|
lt9611->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
|
|
|
|
drm_bridge_add(<9611->bridge);
|
|
|
|
/* Attach primary DSI */
|
|
lt9611->dsi0 = lt9611_attach_dsi(lt9611, lt9611->dsi0_node);
|
|
if (IS_ERR(lt9611->dsi0)) {
|
|
ret = PTR_ERR(lt9611->dsi0);
|
|
goto err_remove_bridge;
|
|
}
|
|
|
|
/* Attach secondary DSI, if specified */
|
|
if (lt9611->dsi1_node) {
|
|
lt9611->dsi1 = lt9611_attach_dsi(lt9611, lt9611->dsi1_node);
|
|
if (IS_ERR(lt9611->dsi1)) {
|
|
ret = PTR_ERR(lt9611->dsi1);
|
|
goto err_remove_bridge;
|
|
}
|
|
}
|
|
|
|
lt9611_enable_hpd_interrupts(lt9611);
|
|
|
|
ret = lt9611_audio_init(dev, lt9611);
|
|
if (ret)
|
|
goto err_remove_bridge;
|
|
|
|
return 0;
|
|
|
|
err_remove_bridge:
|
|
drm_bridge_remove(<9611->bridge);
|
|
|
|
err_disable_regulators:
|
|
regulator_bulk_disable(ARRAY_SIZE(lt9611->supplies), lt9611->supplies);
|
|
|
|
err_of_put:
|
|
of_node_put(lt9611->dsi1_node);
|
|
of_node_put(lt9611->dsi0_node);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void lt9611_remove(struct i2c_client *client)
|
|
{
|
|
struct lt9611 *lt9611 = i2c_get_clientdata(client);
|
|
|
|
disable_irq(client->irq);
|
|
lt9611_audio_exit(lt9611);
|
|
drm_bridge_remove(<9611->bridge);
|
|
|
|
regulator_bulk_disable(ARRAY_SIZE(lt9611->supplies), lt9611->supplies);
|
|
|
|
of_node_put(lt9611->dsi1_node);
|
|
of_node_put(lt9611->dsi0_node);
|
|
}
|
|
|
|
static struct i2c_device_id lt9611_id[] = {
|
|
{ "lontium,lt9611", 0 },
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, lt9611_id);
|
|
|
|
static const struct of_device_id lt9611_match_table[] = {
|
|
{ .compatible = "lontium,lt9611" },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, lt9611_match_table);
|
|
|
|
static struct i2c_driver lt9611_driver = {
|
|
.driver = {
|
|
.name = "lt9611",
|
|
.of_match_table = lt9611_match_table,
|
|
},
|
|
.probe_new = lt9611_probe,
|
|
.remove = lt9611_remove,
|
|
.id_table = lt9611_id,
|
|
};
|
|
module_i2c_driver(lt9611_driver);
|
|
|
|
MODULE_LICENSE("GPL v2");
|