Re: [PATCH v3 2/4] drm/panel: Add driver for DJN HX83112A LCD panel
From: Neil Armstrong
Date: Fri Feb 16 2024 - 05:33:59 EST
On 16/02/2024 11:10, Luca Weiss wrote:
Add support for the 2340x1080 LCD panel (DJN 9A-3R063-1102B) bundled
with a HX83112A driver IC, as found on the Fairphone 4 smartphone.
Signed-off-by: Luca Weiss <luca.weiss@xxxxxxxxxxxxx>
---
drivers/gpu/drm/panel/Kconfig | 10 +
drivers/gpu/drm/panel/Makefile | 1 +
drivers/gpu/drm/panel/panel-himax-hx83112a.c | 372 +++++++++++++++++++++++++++
3 files changed, 383 insertions(+)
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index 8f3783742208..7e25a4609682 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -162,6 +162,16 @@ config DRM_PANEL_FEIYANG_FY07024DI26A30D
Say Y if you want to enable support for panels based on the
Feiyang FY07024DI26A30-D MIPI-DSI interface.
+config DRM_PANEL_HIMAX_HX83112A
+ tristate "Himax HX83112A-based DSI panel"
+ depends on OF
+ depends on DRM_MIPI_DSI
+ depends on BACKLIGHT_CLASS_DEVICE
+ select DRM_KMS_HELPER
+ help
+ Say Y here if you want to enable support for Himax HX83112A-based
+ display panels, such as the one found in the Fairphone 4 smartphone.
+
config DRM_PANEL_HIMAX_HX8394
tristate "HIMAX HX8394 MIPI-DSI LCD panels"
depends on OF
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index d94a644d0a6c..f3e40f24d516 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -14,6 +14,7 @@ obj-$(CONFIG_DRM_PANEL_EBBG_FT8719) += panel-ebbg-ft8719.o
obj-$(CONFIG_DRM_PANEL_ELIDA_KD35T133) += panel-elida-kd35t133.o
obj-$(CONFIG_DRM_PANEL_FEIXIN_K101_IM2BA02) += panel-feixin-k101-im2ba02.o
obj-$(CONFIG_DRM_PANEL_FEIYANG_FY07024DI26A30D) += panel-feiyang-fy07024di26a30d.o
+obj-$(CONFIG_DRM_PANEL_HIMAX_HX83112A) += panel-himax-hx83112a.o
obj-$(CONFIG_DRM_PANEL_HIMAX_HX8394) += panel-himax-hx8394.o
obj-$(CONFIG_DRM_PANEL_ILITEK_IL9322) += panel-ilitek-ili9322.o
obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9341) += panel-ilitek-ili9341.o
diff --git a/drivers/gpu/drm/panel/panel-himax-hx83112a.c b/drivers/gpu/drm/panel/panel-himax-hx83112a.c
new file mode 100644
index 000000000000..466c27012abf
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-himax-hx83112a.c
@@ -0,0 +1,372 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree.
+ * Copyright (c) 2024 Luca Weiss <luca.weiss@xxxxxxxxxxxxx>
+ */
+
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/regulator/consumer.h>
+
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_panel.h>
+#include <drm/drm_probe_helper.h>
+
+/* Manufacturer specific DSI commands */
+#define HX83112A_SETPOWER1 0xb1
+#define HX83112A_SETDISP 0xb2
+#define HX83112A_SETDRV 0xb4
+#define HX83112A_SETEXTC 0xb9
+#define HX83112A_SETBANK 0xbd
+#define HX83112A_SETPTBA 0xbf
+#define HX83112A_SETDGCLUT 0xc1
+#define HX83112A_SETTCON 0xc7
+#define HX83112A_SETCLOCK 0xcb
+#define HX83112A_SETPANEL 0xcc
+#define HX83112A_SETPOWER2 0xd2
+#define HX83112A_SETGIP0 0xd3
+#define HX83112A_SETGIP1 0xd5
+#define HX83112A_SETGIP2 0xd6
+#define HX83112A_SETGIP3 0xd8
+#define HX83112A_SETTP1 0xe7
+#define HX83112A_UNKNOWN1 0xe9
+
+struct hx83112a_panel {
+ struct drm_panel panel;
+ struct mipi_dsi_device *dsi;
+ struct regulator_bulk_data supplies[3];
+ struct gpio_desc *reset_gpio;
+};
+
+static inline struct hx83112a_panel *to_hx83112a_panel(struct drm_panel *panel)
+{
+ return container_of(panel, struct hx83112a_panel, panel);
+}
+
+static void hx83112a_reset(struct hx83112a_panel *ctx)
+{
+ gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+ msleep(20);
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+ msleep(20);
+ gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+ msleep(50);
+}
+
+static int hx83112a_on(struct hx83112a_panel *ctx)
+{
+ struct mipi_dsi_device *dsi = ctx->dsi;
+ struct device *dev = &dsi->dev;
+ int ret;
+
+ dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETEXTC, 0x83, 0x11, 0x2a);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETPOWER1,
+ 0x08, 0x28, 0x28, 0x83, 0x83, 0x4c, 0x4f, 0x33);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETDISP,
+ 0x00, 0x02, 0x00, 0x90, 0x24, 0x00, 0x08, 0x19,
+ 0xea, 0x11, 0x11, 0x00, 0x11, 0xa3);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETDRV,
+ 0x58, 0x68, 0x58, 0x68, 0x0f, 0xef, 0x0b, 0xc0,
+ 0x0b, 0xc0, 0x0b, 0xc0, 0x00, 0xff, 0x00, 0xff,
+ 0x00, 0x00, 0x14, 0x15, 0x00, 0x29, 0x11, 0x07,
+ 0x12, 0x00, 0x29);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETBANK, 0x02);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETDRV,
+ 0x00, 0x12, 0x12, 0x11, 0x88, 0x12, 0x12, 0x00,
+ 0x53);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETBANK, 0x00);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETBANK, 0x03);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETDGCLUT,
+ 0xff, 0xfe, 0xfb, 0xf8, 0xf4, 0xf1, 0xed, 0xe6,
+ 0xe2, 0xde, 0xdb, 0xd6, 0xd3, 0xcf, 0xca, 0xc6,
+ 0xc2, 0xbe, 0xb9, 0xb0, 0xa7, 0x9e, 0x96, 0x8d,
+ 0x84, 0x7c, 0x74, 0x6b, 0x62, 0x5a, 0x51, 0x49,
+ 0x41, 0x39, 0x31, 0x29, 0x21, 0x19, 0x12, 0x0a,
+ 0x06, 0x05, 0x02, 0x01, 0x00, 0x00, 0xc9, 0xb3,
+ 0x08, 0x0e, 0xf2, 0xe1, 0x59, 0xf4, 0x22, 0xad,
+ 0x40);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETBANK, 0x02);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETDGCLUT,
+ 0xff, 0xfe, 0xfb, 0xf8, 0xf4, 0xf1, 0xed, 0xe6,
+ 0xe2, 0xde, 0xdb, 0xd6, 0xd3, 0xcf, 0xca, 0xc6,
+ 0xc2, 0xbe, 0xb9, 0xb0, 0xa7, 0x9e, 0x96, 0x8d,
+ 0x84, 0x7c, 0x74, 0x6b, 0x62, 0x5a, 0x51, 0x49,
+ 0x41, 0x39, 0x31, 0x29, 0x21, 0x19, 0x12, 0x0a,
+ 0x06, 0x05, 0x02, 0x01, 0x00, 0x00, 0xc9, 0xb3,
+ 0x08, 0x0e, 0xf2, 0xe1, 0x59, 0xf4, 0x22, 0xad,
+ 0x40);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETBANK, 0x01);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETDGCLUT,
+ 0xff, 0xfe, 0xfb, 0xf8, 0xf4, 0xf1, 0xed, 0xe6,
+ 0xe2, 0xde, 0xdb, 0xd6, 0xd3, 0xcf, 0xca, 0xc6,
+ 0xc2, 0xbe, 0xb9, 0xb0, 0xa7, 0x9e, 0x96, 0x8d,
+ 0x84, 0x7c, 0x74, 0x6b, 0x62, 0x5a, 0x51, 0x49,
+ 0x41, 0x39, 0x31, 0x29, 0x21, 0x19, 0x12, 0x0a,
+ 0x06, 0x05, 0x02, 0x01, 0x00, 0x00, 0xc9, 0xb3,
+ 0x08, 0x0e, 0xf2, 0xe1, 0x59, 0xf4, 0x22, 0xad,
+ 0x40);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETBANK, 0x00);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETDGCLUT, 0x01);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETTCON,
+ 0x70, 0x00, 0x04, 0xe0, 0x33, 0x00);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETPANEL, 0x08);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETPOWER2, 0x2b, 0x2b);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETGIP0,
+ 0x80, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x08,
+ 0x08, 0x03, 0x03, 0x22, 0x18, 0x07, 0x07, 0x07,
+ 0x07, 0x32, 0x10, 0x06, 0x00, 0x06, 0x32, 0x10,
+ 0x07, 0x00, 0x07, 0x32, 0x19, 0x31, 0x09, 0x31,
+ 0x00, 0x00, 0x05, 0x00, 0x00, 0x00, 0x00, 0x08,
+ 0x09, 0x30, 0x00, 0x00, 0x00, 0x06, 0x0d, 0x00,
+ 0x0f);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETBANK, 0x01);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETGIP0,
+ 0x00, 0x00, 0x19, 0x10, 0x00, 0x0a, 0x00, 0x81);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETBANK, 0x00);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETGIP1,
+ 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
+ 0xc0, 0xc0, 0x18, 0x18, 0x19, 0x19, 0x18, 0x18,
+ 0x40, 0x40, 0x18, 0x18, 0x18, 0x18, 0x3f, 0x3f,
+ 0x28, 0x28, 0x24, 0x24, 0x02, 0x03, 0x02, 0x03,
+ 0x00, 0x01, 0x00, 0x01, 0x31, 0x31, 0x31, 0x31,
+ 0x30, 0x30, 0x30, 0x30, 0x2f, 0x2f, 0x2f, 0x2f);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETGIP2,
+ 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
+ 0x40, 0x40, 0x18, 0x18, 0x18, 0x18, 0x19, 0x19,
+ 0x40, 0x40, 0x18, 0x18, 0x18, 0x18, 0x3f, 0x3f,
+ 0x24, 0x24, 0x28, 0x28, 0x01, 0x00, 0x01, 0x00,
+ 0x03, 0x02, 0x03, 0x02, 0x31, 0x31, 0x31, 0x31,
+ 0x30, 0x30, 0x30, 0x30, 0x2f, 0x2f, 0x2f, 0x2f);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETGIP3,
+ 0xaa, 0xea, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xea,
+ 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xea, 0xab, 0xaa,
+ 0xaa, 0xaa, 0xaa, 0xea, 0xab, 0xaa, 0xaa, 0xaa);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETBANK, 0x01);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETGIP3,
+ 0xaa, 0x2e, 0x28, 0x00, 0x00, 0x00, 0xaa, 0x2e,
+ 0x28, 0x00, 0x00, 0x00, 0xaa, 0xee, 0xaa, 0xaa,
+ 0xaa, 0xaa, 0xaa, 0xee, 0xaa, 0xaa, 0xaa, 0xaa);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETBANK, 0x02);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETGIP3,
+ 0xaa, 0xff, 0xff, 0xff, 0xff, 0xff, 0xaa, 0xff,
+ 0xff, 0xff, 0xff, 0xff);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETBANK, 0x03);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETGIP3,
+ 0xaa, 0xaa, 0xea, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+ 0xea, 0xaa, 0xaa, 0xaa, 0xaa, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xaa, 0xff, 0xff, 0xff, 0xff, 0xff);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETBANK, 0x00);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETTP1,
+ 0x0e, 0x0e, 0x1e, 0x65, 0x1c, 0x65, 0x00, 0x50,
+ 0x20, 0x20, 0x00, 0x00, 0x02, 0x02, 0x02, 0x05,
+ 0x14, 0x14, 0x32, 0xb9, 0x23, 0xb9, 0x08);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETBANK, 0x01);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETTP1,
+ 0x02, 0x00, 0xa8, 0x01, 0xa8, 0x0d, 0xa4, 0x0e);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETBANK, 0x02);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETTP1,
+ 0x00, 0x00, 0x08, 0x00, 0x01, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00,
+ 0x00, 0x00, 0x00, 0x02, 0x00);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETBANK, 0x00);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_UNKNOWN1, 0xc3);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETCLOCK, 0xd1, 0xd6);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_UNKNOWN1, 0x3f);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_UNKNOWN1, 0xc6);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_SETPTBA, 0x37);
+ mipi_dsi_dcs_write_seq(dsi, HX83112A_UNKNOWN1, 0x3f);
+
+ ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
+ return ret;
+ }
+ msleep(150);
+
+ ret = mipi_dsi_dcs_set_display_on(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to set display on: %d\n", ret);
+ return ret;
+ }
+ msleep(50);
+
+ return 0;
+}
+
+static int hx83112a_disable(struct drm_panel *panel)
+{
+ struct hx83112a_panel *ctx = to_hx83112a_panel(panel);
+ struct mipi_dsi_device *dsi = ctx->dsi;
+ struct device *dev = &dsi->dev;
+ int ret;
+
+ dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+
+ ret = mipi_dsi_dcs_set_display_off(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to set display off: %d\n", ret);
+ return ret;
+ }
+ msleep(20);
+
+ ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
+ return ret;
+ }
+ msleep(120);
+
+ return 0;
+}
+
+static int hx83112a_prepare(struct drm_panel *panel)
+{
+ struct hx83112a_panel *ctx = to_hx83112a_panel(panel);
+ struct device *dev = &ctx->dsi->dev;
+ int ret;
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+ if (ret < 0) {
+ dev_err(dev, "Failed to enable regulators: %d\n", ret);
+ return ret;
+ }
+
+ hx83112a_reset(ctx);
+
+ ret = hx83112a_on(ctx);
+ if (ret < 0) {
+ dev_err(dev, "Failed to initialize panel: %d\n", ret);
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+ regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int hx83112a_unprepare(struct drm_panel *panel)
+{
+ struct hx83112a_panel *ctx = to_hx83112a_panel(panel);
+
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+ regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+
+ return 0;
+}
+
+static const struct drm_display_mode hx83112a_mode = {
+ .clock = (1080 + 28 + 8 + 8) * (2340 + 27 + 5 + 5) * 60 / 1000,
+ .hdisplay = 1080,
+ .hsync_start = 1080 + 28,
+ .hsync_end = 1080 + 28 + 8,
+ .htotal = 1080 + 28 + 8 + 8,
+ .vdisplay = 2340,
+ .vsync_start = 2340 + 27,
+ .vsync_end = 2340 + 27 + 5,
+ .vtotal = 2340 + 27 + 5 + 5,
+ .width_mm = 67,
+ .height_mm = 145,
+ .type = DRM_MODE_TYPE_DRIVER,
+};
+
+static int hx83112a_get_modes(struct drm_panel *panel,
+ struct drm_connector *connector)
+{
+ return drm_connector_helper_get_modes_fixed(connector, &hx83112a_mode);
+}
+
+static const struct drm_panel_funcs hx83112a_panel_funcs = {
+ .prepare = hx83112a_prepare,
+ .unprepare = hx83112a_unprepare,
+ .disable = hx83112a_disable,
+ .get_modes = hx83112a_get_modes,
+};
+
+static int hx83112a_probe(struct mipi_dsi_device *dsi)
+{
+ struct device *dev = &dsi->dev;
+ struct hx83112a_panel *ctx;
+ int ret;
+
+ ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+ ctx->supplies[0].supply = "vdd1";
+ ctx->supplies[1].supply = "vsn";
+ ctx->supplies[2].supply = "vsp";
+ ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies),
+ ctx->supplies);
+ if (ret < 0)
+ return dev_err_probe(dev, ret, "Failed to get regulators\n");
+
+ ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
+ if (IS_ERR(ctx->reset_gpio))
+ return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
+ "Failed to get reset-gpios\n");
+
+ ctx->dsi = dsi;
+ mipi_dsi_set_drvdata(dsi, ctx);
+
+ dsi->lanes = 4;
+ dsi->format = MIPI_DSI_FMT_RGB888;
+ dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
+ MIPI_DSI_MODE_VIDEO_HSE |
+ MIPI_DSI_CLOCK_NON_CONTINUOUS;
+
+ drm_panel_init(&ctx->panel, dev, &hx83112a_panel_funcs,
+ DRM_MODE_CONNECTOR_DSI);
+ ctx->panel.prepare_prev_first = true;
+
+ ret = drm_panel_of_backlight(&ctx->panel);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to get backlight\n");
+
+ drm_panel_add(&ctx->panel);
+
+ ret = mipi_dsi_attach(dsi);
+ if (ret < 0) {
+ dev_err_probe(dev, ret, "Failed to attach to DSI host\n");
+ drm_panel_remove(&ctx->panel);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void hx83112a_remove(struct mipi_dsi_device *dsi)
+{
+ struct hx83112a_panel *ctx = mipi_dsi_get_drvdata(dsi);
+ int ret;
+
+ ret = mipi_dsi_detach(dsi);
+ if (ret < 0)
+ dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);
+
+ drm_panel_remove(&ctx->panel);
+}
+
+static const struct of_device_id hx83112a_of_match[] = {
+ { .compatible = "djn,9a-3r063-1102b" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, hx83112a_of_match);
+
+static struct mipi_dsi_driver hx83112a_driver = {
+ .probe = hx83112a_probe,
+ .remove = hx83112a_remove,
+ .driver = {
+ .name = "panel-himax-hx83112a",
+ .of_match_table = hx83112a_of_match,
+ },
+};
+module_mipi_dsi_driver(hx83112a_driver);
+
+MODULE_DESCRIPTION("DRM driver for hx83112a-equipped DSI panels");
+MODULE_LICENSE("GPL");
LGTM
Reviewed-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>