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drm/exynos/decon5433: add support for DECON-TV 

DECON-TV IP is responsible for generating video stream which is transferred
to HDMI IP. It is almost fully compatible with DECON IP.

The patch is based on initial work of Hyungwon Hwang.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
hifive-unleashed-5.1
Andrzej Hajda 2015-10-20 18:22:41 +09:00 committed by Inki Dae
parent 5d929ba50a
commit b8182832c5
2 changed files with 122 additions and 61 deletions
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154
drivers/gpu/drm/exynos/exynos5433_drm_decon.c
View File

@ -13,6 +13,7 @@
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/component.h>
#include <linux/of_device.h>
#include <linux/of_gpio.h>
#include <linux/pm_runtime.h>
@ -37,6 +38,12 @@ static const char * const decon_clks_name[] = {
"sclk_decon_eclk",
};
enum decon_iftype {
IFTYPE_RGB,
IFTYPE_I80,
IFTYPE_HDMI
};
enum decon_flag_bits {
BIT_CLKS_ENABLED,
BIT_IRQS_ENABLED,
@ -53,7 +60,8 @@ struct decon_context {
struct clk *clks[ARRAY_SIZE(decon_clks_name)];
int pipe;
unsigned long flags;
bool i80_if;
enum decon_iftype out_type;
int first_win;
};
static const uint32_t decon_formats[] = {
@ -80,7 +88,7 @@ static int decon_enable_vblank(struct exynos_drm_crtc *crtc)
if (test_and_set_bit(BIT_IRQS_ENABLED, &ctx->flags)) {
val = VIDINTCON0_INTEN;
if (ctx->i80_if)
if (ctx->out_type == IFTYPE_I80)
val |= VIDINTCON0_FRAMEDONE;
else
val |= VIDINTCON0_INTFRMEN;
@ -104,8 +112,11 @@ static void decon_disable_vblank(struct exynos_drm_crtc *crtc)
static void decon_setup_trigger(struct decon_context *ctx)
{
u32 val = TRIGCON_TRIGEN_PER_F | TRIGCON_TRIGEN_F |
TRIGCON_TE_AUTO_MASK | TRIGCON_SWTRIGEN;
u32 val = (ctx->out_type != IFTYPE_HDMI)
? TRIGCON_TRIGEN_PER_F | TRIGCON_TRIGEN_F |
TRIGCON_TE_AUTO_MASK | TRIGCON_SWTRIGEN
: TRIGCON_TRIGEN_PER_F | TRIGCON_TRIGEN_F |
TRIGCON_HWTRIGMASK_I80_RGB | TRIGCON_HWTRIGEN_I80_RGB;
writel(val, ctx->addr + DECON_TRIGCON);
}
@ -118,13 +129,22 @@ static void decon_commit(struct exynos_drm_crtc *crtc)
if (test_bit(BIT_SUSPENDED, &ctx->flags))
return;
if (ctx->out_type == IFTYPE_HDMI) {
m->crtc_hsync_start = m->crtc_hdisplay + 10;
m->crtc_hsync_end = m->crtc_htotal - 92;
m->crtc_vsync_start = m->crtc_vdisplay + 1;
m->crtc_vsync_end = m->crtc_vsync_start + 1;
}
decon_set_bits(ctx, DECON_VIDCON0, VIDCON0_ENVID, 0);
/* enable clock gate */
val = CMU_CLKGAGE_MODE_SFR_F | CMU_CLKGAGE_MODE_MEM_F;
writel(val, ctx->addr + DECON_CMU);
/* lcd on and use command if */
val = VIDOUT_LCD_ON;
if (ctx->i80_if)
if (ctx->out_type == IFTYPE_I80)
val |= VIDOUT_COMMAND_IF;
else
val |= VIDOUT_RGB_IF;
@ -134,7 +154,7 @@ static void decon_commit(struct exynos_drm_crtc *crtc)
VIDTCON2_HOZVAL(m->hdisplay - 1);
writel(val, ctx->addr + DECON_VIDTCON2);
if (!ctx->i80_if) {
if (ctx->out_type != IFTYPE_I80) {
val = VIDTCON00_VBPD_F(
m->crtc_vtotal - m->crtc_vsync_end - 1) |
VIDTCON00_VFPD_F(
@ -159,15 +179,9 @@ static void decon_commit(struct exynos_drm_crtc *crtc)
decon_setup_trigger(ctx);
/* enable output and display signal */
val = VIDCON0_ENVID | VIDCON0_ENVID_F;
writel(val, ctx->addr + DECON_VIDCON0);
decon_set_bits(ctx, DECON_VIDCON0, VIDCON0_ENVID | VIDCON0_ENVID_F, ~0);
}
#define COORDINATE_X(x) (((x) & 0xfff) << 12)
#define COORDINATE_Y(x) ((x) & 0xfff)
#define OFFSIZE(x) (((x) & 0x3fff) << 14)
#define PAGEWIDTH(x) ((x) & 0x3fff)
static void decon_win_set_pixfmt(struct decon_context *ctx, unsigned int win,
struct drm_framebuffer *fb)
{
@ -238,6 +252,10 @@ static void decon_atomic_begin(struct exynos_drm_crtc *crtc,
decon_shadow_protect_win(ctx, plane->zpos, true);
}
#define BIT_VAL(x, e, s) (((x) & ((1 << ((e) - (s) + 1)) - 1)) << (s))
#define COORDINATE_X(x) BIT_VAL((x), 23, 12)
#define COORDINATE_Y(x) BIT_VAL((x), 11, 0)
static void decon_update_plane(struct exynos_drm_crtc *crtc,
struct exynos_drm_plane *plane)
{
@ -271,8 +289,12 @@ static void decon_update_plane(struct exynos_drm_crtc *crtc,
val = plane->dma_addr[0] + pitch * plane->crtc_h;
writel(val, ctx->addr + DECON_VIDW0xADD1B0(win));
val = OFFSIZE(pitch - plane->crtc_w * bpp)
| PAGEWIDTH(plane->crtc_w * bpp);
if (ctx->out_type != IFTYPE_HDMI)
val = BIT_VAL(pitch - plane->crtc_w * bpp, 27, 14)
| BIT_VAL(plane->crtc_w * bpp, 13, 0);
else
val = BIT_VAL(pitch - plane->crtc_w * bpp, 29, 15)
| BIT_VAL(plane->crtc_w * bpp, 14, 0);
writel(val, ctx->addr + DECON_VIDW0xADD2(win));
decon_win_set_pixfmt(ctx, win, state->fb);
@ -314,7 +336,7 @@ static void decon_atomic_flush(struct exynos_drm_crtc *crtc,
decon_shadow_protect_win(ctx, plane->zpos, false);
if (ctx->i80_if)
if (ctx->out_type == IFTYPE_I80)
set_bit(BIT_WIN_UPDATED, &ctx->flags);
}
@ -339,6 +361,17 @@ static void decon_swreset(struct decon_context *ctx)
}
WARN(tries == 0, "failed to software reset DECON\n");
if (ctx->out_type != IFTYPE_HDMI)
return;
writel(VIDCON0_CLKVALUP | VIDCON0_VLCKFREE, ctx->addr + DECON_VIDCON0);
decon_set_bits(ctx, DECON_CMU,
CMU_CLKGAGE_MODE_SFR_F | CMU_CLKGAGE_MODE_MEM_F, ~0);
writel(VIDCON1_VCLK_RUN_VDEN_DISABLE, ctx->addr + DECON_VIDCON1);
writel(CRCCTRL_CRCEN | CRCCTRL_CRCSTART_F | CRCCTRL_CRCCLKEN,
ctx->addr + DECON_CRCCTRL);
decon_setup_trigger(ctx);
}
static void decon_enable(struct exynos_drm_crtc *crtc)
@ -387,7 +420,7 @@ static void decon_disable(struct exynos_drm_crtc *crtc)
* suspend that connector. Otherwise we might try to scan from
* a destroyed buffer later.
*/
for (i = 0; i < WINDOWS_NR; i++)
for (i = ctx->first_win; i < WINDOWS_NR; i++)
decon_disable_plane(crtc, &ctx->planes[i]);
decon_swreset(ctx);
@ -461,25 +494,30 @@ static int decon_bind(struct device *dev, struct device *master, void *data)
struct drm_device *drm_dev = data;
struct exynos_drm_private *priv = drm_dev->dev_private;
struct exynos_drm_plane *exynos_plane;
enum exynos_drm_output_type out_type;
enum drm_plane_type type;
unsigned int zpos;
unsigned int win;
int ret;
ctx->drm_dev = drm_dev;
ctx->pipe = priv->pipe++;
for (zpos = 0; zpos < WINDOWS_NR; zpos++) {
type = exynos_plane_get_type(zpos, CURSOR_WIN);
ret = exynos_plane_init(drm_dev, &ctx->planes[zpos],
for (win = ctx->first_win; win < WINDOWS_NR; win++) {
int tmp = (win == ctx->first_win) ? 0 : win;
type = exynos_plane_get_type(tmp, CURSOR_WIN);
ret = exynos_plane_init(drm_dev, &ctx->planes[win],
1 << ctx->pipe, type, decon_formats,
ARRAY_SIZE(decon_formats), zpos);
ARRAY_SIZE(decon_formats), win);
if (ret)
return ret;
}
exynos_plane = &ctx->planes[DEFAULT_WIN];
exynos_plane = &ctx->planes[ctx->first_win];
out_type = (ctx->out_type == IFTYPE_HDMI) ? EXYNOS_DISPLAY_TYPE_HDMI
: EXYNOS_DISPLAY_TYPE_LCD;
ctx->crtc = exynos_drm_crtc_create(drm_dev, &exynos_plane->base,
ctx->pipe, EXYNOS_DISPLAY_TYPE_LCD,
ctx->pipe, out_type,
&decon_crtc_ops, ctx);
if (IS_ERR(ctx->crtc)) {
ret = PTR_ERR(ctx->crtc);
@ -513,27 +551,7 @@ static const struct component_ops decon_component_ops = {
.unbind = decon_unbind,
};
static irqreturn_t decon_vsync_irq_handler(int irq, void *dev_id)
{
struct decon_context *ctx = dev_id;
u32 val;
if (!test_bit(BIT_CLKS_ENABLED, &ctx->flags))
goto out;
val = readl(ctx->addr + DECON_VIDINTCON1);
if (val & VIDINTCON1_INTFRMPEND) {
drm_crtc_handle_vblank(&ctx->crtc->base);
/* clear */
writel(VIDINTCON1_INTFRMPEND, ctx->addr + DECON_VIDINTCON1);
}
out:
return IRQ_HANDLED;
}
static irqreturn_t decon_lcd_sys_irq_handler(int irq, void *dev_id)
static irqreturn_t decon_irq_handler(int irq, void *dev_id)
{
struct decon_context *ctx = dev_id;
u32 val;
@ -543,8 +561,10 @@ static irqreturn_t decon_lcd_sys_irq_handler(int irq, void *dev_id)
goto out;
val = readl(ctx->addr + DECON_VIDINTCON1);
if (val & VIDINTCON1_INTFRMDONEPEND) {
for (win = 0 ; win < WINDOWS_NR ; win++) {
val &= VIDINTCON1_INTFRMDONEPEND | VIDINTCON1_INTFRMPEND;
if (val) {
for (win = ctx->first_win; win < WINDOWS_NR ; win++) {
struct exynos_drm_plane *plane = &ctx->planes[win];
if (!plane->pending_fb)
@ -554,16 +574,29 @@ static irqreturn_t decon_lcd_sys_irq_handler(int irq, void *dev_id)
}
/* clear */
writel(VIDINTCON1_INTFRMDONEPEND,
ctx->addr + DECON_VIDINTCON1);
writel(val, ctx->addr + DECON_VIDINTCON1);
}
out:
return IRQ_HANDLED;
}
static const struct of_device_id exynos5433_decon_driver_dt_match[] = {
{
.compatible = "samsung,exynos5433-decon",
.data = (void *)IFTYPE_RGB
},
{
.compatible = "samsung,exynos5433-decon-tv",
.data = (void *)IFTYPE_HDMI
},
{},
};
MODULE_DEVICE_TABLE(of, exynos5433_decon_driver_dt_match);
static int exynos5433_decon_probe(struct platform_device *pdev)
{
const struct of_device_id *of_id;
struct device *dev = &pdev->dev;
struct decon_context *ctx;
struct resource *res;
@ -576,8 +609,14 @@ static int exynos5433_decon_probe(struct platform_device *pdev)
__set_bit(BIT_SUSPENDED, &ctx->flags);
ctx->dev = dev;
if (of_get_child_by_name(dev->of_node, "i80-if-timings"))
ctx->i80_if = true;
of_id = of_match_device(exynos5433_decon_driver_dt_match, &pdev->dev);
ctx->out_type = (enum decon_iftype)of_id->data;
if (ctx->out_type == IFTYPE_HDMI)
ctx->first_win = 1;
else if (of_get_child_by_name(dev->of_node, "i80-if-timings"))
ctx->out_type = IFTYPE_I80;
for (i = 0; i < ARRAY_SIZE(decon_clks_name); i++) {
struct clk *clk;
@ -602,15 +641,14 @@ static int exynos5433_decon_probe(struct platform_device *pdev)
}
res = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
ctx->i80_if ? "lcd_sys" : "vsync");
(ctx->out_type == IFTYPE_I80) ? "lcd_sys" : "vsync");
if (!res) {
dev_err(dev, "cannot find IRQ resource\n");
return -ENXIO;
}
ret = devm_request_irq(dev, res->start, ctx->i80_if ?
decon_lcd_sys_irq_handler : decon_vsync_irq_handler, 0,
"drm_decon", ctx);
ret = devm_request_irq(dev, res->start, decon_irq_handler, 0,
"drm_decon", ctx);
if (ret < 0) {
dev_err(dev, "lcd_sys irq request failed\n");
return ret;
@ -641,12 +679,6 @@ static int exynos5433_decon_remove(struct platform_device *pdev)
return 0;
}
static const struct of_device_id exynos5433_decon_driver_dt_match[] = {
{ .compatible = "samsung,exynos5433-decon" },
{},
};
MODULE_DEVICE_TABLE(of, exynos5433_decon_driver_dt_match);
struct platform_driver exynos5433_decon_driver = {
.probe = exynos5433_decon_probe,
.remove = exynos5433_decon_remove,

29
include/video/exynos5433_decon.h
View File

@ -82,6 +82,8 @@
/* VIDCON0 */
#define VIDCON0_SWRESET (1 << 28)
#define VIDCON0_CLKVALUP (1 << 14)
#define VIDCON0_VLCKFREE (1 << 5)
#define VIDCON0_STOP_STATUS (1 << 2)
#define VIDCON0_ENVID (1 << 1)
#define VIDCON0_ENVID_F (1 << 0)
@ -137,6 +139,13 @@
/* DECON_UPDATE */
#define STANDALONE_UPDATE_F (1 << 0)
/* DECON_VIDCON1 */
#define VIDCON1_VCLK_MASK (0x3 << 9)
#define VIDCON1_VCLK_RUN_VDEN_DISABLE (0x3 << 9)
#define VIDCON1_VCLK_HOLD (0x0 << 9)
#define VIDCON1_VCLK_RUN (0x1 << 9)
/* DECON_VIDTCON00 */
#define VIDTCON00_VBPD_F(x) (((x) & 0xfff) << 16)
#define VIDTCON00_VFPD_F(x) ((x) & 0xfff)
@ -159,7 +168,27 @@
#define TRIGCON_TRIGEN_PER_F (1 << 31)
#define TRIGCON_TRIGEN_F (1 << 30)
#define TRIGCON_TE_AUTO_MASK (1 << 29)
#define TRIGCON_WB_SWTRIGCMD (1 << 28)
#define TRIGCON_SWTRIGCMD_W4BUF (1 << 26)
#define TRIGCON_TRIGMODE_W4BUF (1 << 25)
#define TRIGCON_SWTRIGCMD_W3BUF (1 << 21)
#define TRIGCON_TRIGMODE_W3BUF (1 << 20)
#define TRIGCON_SWTRIGCMD_W2BUF (1 << 16)
#define TRIGCON_TRIGMODE_W2BUF (1 << 15)
#define TRIGCON_SWTRIGCMD_W1BUF (1 << 11)
#define TRIGCON_TRIGMODE_W1BUF (1 << 10)
#define TRIGCON_SWTRIGCMD_W0BUF (1 << 6)
#define TRIGCON_TRIGMODE_W0BUF (1 << 5)
#define TRIGCON_HWTRIGMASK_I80_RGB (1 << 4)
#define TRIGCON_HWTRIGEN_I80_RGB (1 << 3)
#define TRIGCON_HWTRIG_INV_I80_RGB (1 << 2)
#define TRIGCON_SWTRIGCMD (1 << 1)
#define TRIGCON_SWTRIGEN (1 << 0)
/* DECON_CRCCTRL */
#define CRCCTRL_CRCCLKEN (0x1 << 2)
#define CRCCTRL_CRCSTART_F (0x1 << 1)
#define CRCCTRL_CRCEN (0x1 << 0)
#define CRCCTRL_MASK (0x7)
#endif /* EXYNOS_REGS_DECON_H */