#define SSD130X_SET_VCOMH_VOLTAGE 0xbe
#define SSD132X_SET_FUNCTION_SELECT_B 0xd5
+/* ssd133x commands */
+#define SSD133X_SET_COL_RANGE 0x15
+#define SSD133X_SET_ROW_RANGE 0x75
+#define SSD133X_CONTRAST_A 0x81
+#define SSD133X_CONTRAST_B 0x82
+#define SSD133X_CONTRAST_C 0x83
+#define SSD133X_SET_MASTER_CURRENT 0x87
+#define SSD132X_SET_PRECHARGE_A 0x8a
+#define SSD132X_SET_PRECHARGE_B 0x8b
+#define SSD132X_SET_PRECHARGE_C 0x8c
+#define SSD133X_SET_DISPLAY_START 0xa1
+#define SSD133X_SET_DISPLAY_OFFSET 0xa2
+#define SSD133X_SET_DISPLAY_NORMAL 0xa4
+#define SSD133X_SET_MASTER_CONFIG 0xad
+#define SSD133X_POWER_SAVE_MODE 0xb0
+#define SSD133X_PHASES_PERIOD 0xb1
+#define SSD133X_SET_CLOCK_FREQ 0xb3
+#define SSD133X_SET_PRECHARGE_VOLTAGE 0xbb
+#define SSD133X_SET_VCOMH_VOLTAGE 0xbe
+
#define MAX_CONTRAST 255
const struct ssd130x_deviceinfo ssd130x_variants[] = {
.default_width = 128,
.default_height = 128,
.family_id = SSD132X_FAMILY,
+ },
+ /* ssd133x family */
+ [SSD1331_ID] = {
+ .default_width = 96,
+ .default_height = 64,
+ .family_id = SSD133X_FAMILY,
}
};
EXPORT_SYMBOL_NS_GPL(ssd130x_variants, DRM_SSD130X);
return 0;
}
+static int ssd133x_init(struct ssd130x_device *ssd130x)
+{
+ int ret;
+
+ /* Set color A contrast */
+ ret = ssd130x_write_cmd(ssd130x, 2, SSD133X_CONTRAST_A, 0x91);
+ if (ret < 0)
+ return ret;
+
+ /* Set color B contrast */
+ ret = ssd130x_write_cmd(ssd130x, 2, SSD133X_CONTRAST_B, 0x50);
+ if (ret < 0)
+ return ret;
+
+ /* Set color C contrast */
+ ret = ssd130x_write_cmd(ssd130x, 2, SSD133X_CONTRAST_C, 0x7d);
+ if (ret < 0)
+ return ret;
+
+ /* Set master current */
+ ret = ssd130x_write_cmd(ssd130x, 2, SSD133X_SET_MASTER_CURRENT, 0x06);
+ if (ret < 0)
+ return ret;
+
+ /* Set column start and end */
+ ret = ssd130x_write_cmd(ssd130x, 3, SSD133X_SET_COL_RANGE, 0x00, ssd130x->width - 1);
+ if (ret < 0)
+ return ret;
+
+ /* Set row start and end */
+ ret = ssd130x_write_cmd(ssd130x, 3, SSD133X_SET_ROW_RANGE, 0x00, ssd130x->height - 1);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * Horizontal Address Increment
+ * Normal order SA,SB,SC (e.g. RGB)
+ * COM Split Odd Even
+ * 256 color format
+ */
+ ret = ssd130x_write_cmd(ssd130x, 2, SSD13XX_SET_SEG_REMAP, 0x20);
+ if (ret < 0)
+ return ret;
+
+ /* Set display start and offset */
+ ret = ssd130x_write_cmd(ssd130x, 2, SSD133X_SET_DISPLAY_START, 0x00);
+ if (ret < 0)
+ return ret;
+
+ ret = ssd130x_write_cmd(ssd130x, 2, SSD133X_SET_DISPLAY_OFFSET, 0x00);
+ if (ret < 0)
+ return ret;
+
+ /* Set display mode normal */
+ ret = ssd130x_write_cmd(ssd130x, 1, SSD133X_SET_DISPLAY_NORMAL);
+ if (ret < 0)
+ return ret;
+
+ /* Set multiplex ratio value */
+ ret = ssd130x_write_cmd(ssd130x, 2, SSD13XX_SET_MULTIPLEX_RATIO, ssd130x->height - 1);
+ if (ret < 0)
+ return ret;
+
+ /* Set master configuration */
+ ret = ssd130x_write_cmd(ssd130x, 2, SSD133X_SET_MASTER_CONFIG, 0x8e);
+ if (ret < 0)
+ return ret;
+
+ /* Set power mode */
+ ret = ssd130x_write_cmd(ssd130x, 2, SSD133X_POWER_SAVE_MODE, 0x0b);
+ if (ret < 0)
+ return ret;
+
+ /* Set Phase 1 and 2 period */
+ ret = ssd130x_write_cmd(ssd130x, 2, SSD133X_PHASES_PERIOD, 0x31);
+ if (ret < 0)
+ return ret;
+
+ /* Set clock divider */
+ ret = ssd130x_write_cmd(ssd130x, 2, SSD133X_SET_CLOCK_FREQ, 0xf0);
+ if (ret < 0)
+ return ret;
+
+ /* Set pre-charge A */
+ ret = ssd130x_write_cmd(ssd130x, 2, SSD132X_SET_PRECHARGE_A, 0x64);
+ if (ret < 0)
+ return ret;
+
+ /* Set pre-charge B */
+ ret = ssd130x_write_cmd(ssd130x, 2, SSD132X_SET_PRECHARGE_B, 0x78);
+ if (ret < 0)
+ return ret;
+
+ /* Set pre-charge C */
+ ret = ssd130x_write_cmd(ssd130x, 2, SSD132X_SET_PRECHARGE_C, 0x64);
+ if (ret < 0)
+ return ret;
+
+ /* Set pre-charge level */
+ ret = ssd130x_write_cmd(ssd130x, 2, SSD133X_SET_PRECHARGE_VOLTAGE, 0x3a);
+ if (ret < 0)
+ return ret;
+
+ /* Set VCOMH voltage */
+ ret = ssd130x_write_cmd(ssd130x, 2, SSD133X_SET_VCOMH_VOLTAGE, 0x3e);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
static int ssd130x_update_rect(struct ssd130x_device *ssd130x,
struct drm_rect *rect, u8 *buf,
u8 *data_array)
return ret;
}
+static int ssd133x_update_rect(struct ssd130x_device *ssd130x,
+ struct drm_rect *rect, u8 *data_array,
+ unsigned int pitch)
+{
+ unsigned int x = rect->x1;
+ unsigned int y = rect->y1;
+ unsigned int columns = drm_rect_width(rect);
+ unsigned int rows = drm_rect_height(rect);
+ int ret;
+
+ /*
+ * The screen is divided in Segment and Common outputs, where
+ * COM0 to COM[N - 1] are the rows and SEG0 to SEG[M - 1] are
+ * the columns.
+ *
+ * Each Segment has a 8-bit pixel and each Common output has a
+ * row of pixels. When using the (default) horizontal address
+ * increment mode, each byte of data sent to the controller has
+ * a Segment (e.g: SEG0).
+ *
+ * When using the 256 color depth format, each pixel contains 3
+ * sub-pixels for color A, B and C. These have 3 bit, 3 bit and
+ * 2 bits respectively.
+ */
+
+ /* Set column start and end */
+ ret = ssd130x_write_cmd(ssd130x, 3, SSD133X_SET_COL_RANGE, x, columns - 1);
+ if (ret < 0)
+ return ret;
+
+ /* Set row start and end */
+ ret = ssd130x_write_cmd(ssd130x, 3, SSD133X_SET_ROW_RANGE, y, rows - 1);
+ if (ret < 0)
+ return ret;
+
+ /* Write out update in one go since horizontal addressing mode is used */
+ ret = ssd130x_write_data(ssd130x, data_array, pitch * rows);
+
+ return ret;
+}
+
static void ssd130x_clear_screen(struct ssd130x_device *ssd130x, u8 *data_array)
{
unsigned int pages = DIV_ROUND_UP(ssd130x->height, SSD130X_PAGE_HEIGHT);
ssd130x_write_data(ssd130x, data_array, columns * height);
}
+static void ssd133x_clear_screen(struct ssd130x_device *ssd130x, u8 *data_array)
+{
+ const struct drm_format_info *fi = drm_format_info(DRM_FORMAT_RGB332);
+ unsigned int pitch;
+
+ if (!fi)
+ return;
+
+ pitch = drm_format_info_min_pitch(fi, 0, ssd130x->width);
+
+ memset(data_array, 0, pitch * ssd130x->height);
+
+ /* Write out update in one go since horizontal addressing mode is used */
+ ssd130x_write_data(ssd130x, data_array, pitch * ssd130x->height);
+}
+
static int ssd130x_fb_blit_rect(struct drm_framebuffer *fb,
const struct iosys_map *vmap,
struct drm_rect *rect,
return ret;
}
+static int ssd133x_fb_blit_rect(struct drm_framebuffer *fb,
+ const struct iosys_map *vmap,
+ struct drm_rect *rect, u8 *data_array,
+ struct drm_format_conv_state *fmtcnv_state)
+{
+ struct ssd130x_device *ssd130x = drm_to_ssd130x(fb->dev);
+ const struct drm_format_info *fi = drm_format_info(DRM_FORMAT_RGB332);
+ unsigned int dst_pitch;
+ struct iosys_map dst;
+ int ret = 0;
+
+ if (!fi)
+ return -EINVAL;
+
+ dst_pitch = drm_format_info_min_pitch(fi, 0, drm_rect_width(rect));
+
+ ret = drm_gem_fb_begin_cpu_access(fb, DMA_FROM_DEVICE);
+ if (ret)
+ return ret;
+
+ iosys_map_set_vaddr(&dst, data_array);
+ drm_fb_xrgb8888_to_rgb332(&dst, &dst_pitch, vmap, fb, rect, fmtcnv_state);
+
+ drm_gem_fb_end_cpu_access(fb, DMA_FROM_DEVICE);
+
+ ssd133x_update_rect(ssd130x, rect, data_array, dst_pitch);
+
+ return ret;
+}
+
static int ssd130x_primary_plane_atomic_check(struct drm_plane *plane,
struct drm_atomic_state *state)
{
return 0;
}
+static int ssd133x_primary_plane_atomic_check(struct drm_plane *plane,
+ struct drm_atomic_state *state)
+{
+ struct drm_plane_state *plane_state = drm_atomic_get_new_plane_state(state, plane);
+ struct drm_crtc *crtc = plane_state->crtc;
+ struct drm_crtc_state *crtc_state = NULL;
+ int ret;
+
+ if (crtc)
+ crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
+
+ ret = drm_atomic_helper_check_plane_state(plane_state, crtc_state,
+ DRM_PLANE_NO_SCALING,
+ DRM_PLANE_NO_SCALING,
+ false, false);
+ if (ret)
+ return ret;
+ else if (!plane_state->visible)
+ return 0;
+
+ return 0;
+}
+
static void ssd130x_primary_plane_atomic_update(struct drm_plane *plane,
struct drm_atomic_state *state)
{
drm_dev_exit(idx);
}
+static void ssd133x_primary_plane_atomic_update(struct drm_plane *plane,
+ struct drm_atomic_state *state)
+{
+ struct drm_plane_state *plane_state = drm_atomic_get_new_plane_state(state, plane);
+ struct drm_plane_state *old_plane_state = drm_atomic_get_old_plane_state(state, plane);
+ struct drm_shadow_plane_state *shadow_plane_state = to_drm_shadow_plane_state(plane_state);
+ struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state, plane_state->crtc);
+ struct ssd130x_crtc_state *ssd130x_crtc_state = to_ssd130x_crtc_state(crtc_state);
+ struct drm_framebuffer *fb = plane_state->fb;
+ struct drm_atomic_helper_damage_iter iter;
+ struct drm_device *drm = plane->dev;
+ struct drm_rect dst_clip;
+ struct drm_rect damage;
+ int idx;
+
+ if (!drm_dev_enter(drm, &idx))
+ return;
+
+ drm_atomic_helper_damage_iter_init(&iter, old_plane_state, plane_state);
+ drm_atomic_for_each_plane_damage(&iter, &damage) {
+ dst_clip = plane_state->dst;
+
+ if (!drm_rect_intersect(&dst_clip, &damage))
+ continue;
+
+ ssd133x_fb_blit_rect(fb, &shadow_plane_state->data[0], &dst_clip,
+ ssd130x_crtc_state->data_array,
+ &shadow_plane_state->fmtcnv_state);
+ }
+
+ drm_dev_exit(idx);
+}
+
static void ssd130x_primary_plane_atomic_disable(struct drm_plane *plane,
struct drm_atomic_state *state)
{
drm_dev_exit(idx);
}
+static void ssd133x_primary_plane_atomic_disable(struct drm_plane *plane,
+ struct drm_atomic_state *state)
+{
+ struct drm_device *drm = plane->dev;
+ struct ssd130x_device *ssd130x = drm_to_ssd130x(drm);
+ struct drm_plane_state *plane_state = drm_atomic_get_new_plane_state(state, plane);
+ struct drm_crtc_state *crtc_state;
+ struct ssd130x_crtc_state *ssd130x_crtc_state;
+ int idx;
+
+ if (!plane_state->crtc)
+ return;
+
+ crtc_state = drm_atomic_get_new_crtc_state(state, plane_state->crtc);
+ ssd130x_crtc_state = to_ssd130x_crtc_state(crtc_state);
+
+ if (!drm_dev_enter(drm, &idx))
+ return;
+
+ ssd133x_clear_screen(ssd130x, ssd130x_crtc_state->data_array);
+
+ drm_dev_exit(idx);
+}
+
/* Called during init to allocate the plane's atomic state. */
static void ssd130x_primary_plane_reset(struct drm_plane *plane)
{
.atomic_check = ssd132x_primary_plane_atomic_check,
.atomic_update = ssd132x_primary_plane_atomic_update,
.atomic_disable = ssd132x_primary_plane_atomic_disable,
+ },
+ [SSD133X_FAMILY] = {
+ DRM_GEM_SHADOW_PLANE_HELPER_FUNCS,
+ .atomic_check = ssd133x_primary_plane_atomic_check,
+ .atomic_update = ssd133x_primary_plane_atomic_update,
+ .atomic_disable = ssd133x_primary_plane_atomic_disable,
}
};
return 0;
}
+static int ssd133x_crtc_atomic_check(struct drm_crtc *crtc,
+ struct drm_atomic_state *state)
+{
+ struct drm_device *drm = crtc->dev;
+ struct ssd130x_device *ssd130x = drm_to_ssd130x(drm);
+ struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
+ struct ssd130x_crtc_state *ssd130x_state = to_ssd130x_crtc_state(crtc_state);
+ const struct drm_format_info *fi = drm_format_info(DRM_FORMAT_RGB332);
+ unsigned int pitch;
+ int ret;
+
+ if (!fi)
+ return -EINVAL;
+
+ ret = drm_crtc_helper_atomic_check(crtc, state);
+ if (ret)
+ return ret;
+
+ pitch = drm_format_info_min_pitch(fi, 0, ssd130x->width);
+
+ ssd130x_state->data_array = kmalloc(pitch * ssd130x->height, GFP_KERNEL);
+ if (!ssd130x_state->data_array)
+ return -ENOMEM;
+
+ return 0;
+}
+
/* Called during init to allocate the CRTC's atomic state. */
static void ssd130x_crtc_reset(struct drm_crtc *crtc)
{
.mode_valid = ssd130x_crtc_mode_valid,
.atomic_check = ssd132x_crtc_atomic_check,
},
+ [SSD133X_FAMILY] = {
+ .mode_valid = ssd130x_crtc_mode_valid,
+ .atomic_check = ssd133x_crtc_atomic_check,
+ },
};
static const struct drm_crtc_funcs ssd130x_crtc_funcs = {
ssd130x_power_off(ssd130x);
}
+static void ssd133x_encoder_atomic_enable(struct drm_encoder *encoder,
+ struct drm_atomic_state *state)
+{
+ struct drm_device *drm = encoder->dev;
+ struct ssd130x_device *ssd130x = drm_to_ssd130x(drm);
+ int ret;
+
+ ret = ssd130x_power_on(ssd130x);
+ if (ret)
+ return;
+
+ ret = ssd133x_init(ssd130x);
+ if (ret)
+ goto power_off;
+
+ ssd130x_write_cmd(ssd130x, 1, SSD13XX_DISPLAY_ON);
+
+ backlight_enable(ssd130x->bl_dev);
+
+ return;
+
+power_off:
+ ssd130x_power_off(ssd130x);
+}
+
static void ssd130x_encoder_atomic_disable(struct drm_encoder *encoder,
struct drm_atomic_state *state)
{
[SSD132X_FAMILY] = {
.atomic_enable = ssd132x_encoder_atomic_enable,
.atomic_disable = ssd130x_encoder_atomic_disable,
+ },
+ [SSD133X_FAMILY] = {
+ .atomic_enable = ssd133x_encoder_atomic_enable,
+ .atomic_disable = ssd130x_encoder_atomic_disable,
}
};
projects / linux-2.6-microblaze.git / commitdiff