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Date: Wed, 21 Jul 2021 19:42:26 -0700
From: Bjorn Andersson <bjorn.andersson@...aro.org>
To: Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
David Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel@...ll.ch>,
Rob Herring <robh+dt@...nel.org>,
Stephen Boyd <swboyd@...omium.org>,
Abhinav Kumar <abhinavk@...eaurora.org>
Cc: Kuogee Hsieh <khsieh@...eaurora.org>,
Tanmay Shah <tanmay@...eaurora.org>,
Chandan Uddaraju <chandanu@...eaurora.org>,
linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH 4/5] drm/msm/dp: Store each subblock in the io region
Not all platforms has DP_P0 at offset 0x1000 from the beginning of the
DP block. So dss_io_data into representing each of the sub-regions, to
make it possible in the next patch to specify each of the sub-regions
individually.
Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
---
drivers/gpu/drm/msm/dp/dp_catalog.c | 64 +++++++++--------------------
drivers/gpu/drm/msm/dp/dp_parser.c | 30 ++++++++++++--
drivers/gpu/drm/msm/dp/dp_parser.h | 10 ++++-
3 files changed, 54 insertions(+), 50 deletions(-)
diff --git a/drivers/gpu/drm/msm/dp/dp_catalog.c b/drivers/gpu/drm/msm/dp/dp_catalog.c
index ca96e3514790..23458b0ddc37 100644
--- a/drivers/gpu/drm/msm/dp/dp_catalog.c
+++ b/drivers/gpu/drm/msm/dp/dp_catalog.c
@@ -24,15 +24,6 @@
#define DP_INTERRUPT_STATUS_ACK_SHIFT 1
#define DP_INTERRUPT_STATUS_MASK_SHIFT 2
-#define MSM_DP_CONTROLLER_AHB_OFFSET 0x0000
-#define MSM_DP_CONTROLLER_AHB_SIZE 0x0200
-#define MSM_DP_CONTROLLER_AUX_OFFSET 0x0200
-#define MSM_DP_CONTROLLER_AUX_SIZE 0x0200
-#define MSM_DP_CONTROLLER_LINK_OFFSET 0x0400
-#define MSM_DP_CONTROLLER_LINK_SIZE 0x0C00
-#define MSM_DP_CONTROLLER_P0_OFFSET 0x1000
-#define MSM_DP_CONTROLLER_P0_SIZE 0x0400
-
#define DP_INTERRUPT_STATUS1 \
(DP_INTR_AUX_I2C_DONE| \
DP_INTR_WRONG_ADDR | DP_INTR_TIMEOUT | \
@@ -66,82 +57,77 @@ void dp_catalog_snapshot(struct dp_catalog *dp_catalog, struct msm_disp_state *d
{
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
+ struct dss_io_data *dss = &catalog->io->dp_controller;
- msm_disp_snapshot_add_block(disp_state, catalog->io->dp_controller.len,
- catalog->io->dp_controller.base, "dp_ctrl");
+ msm_disp_snapshot_add_block(disp_state, dss->ahb_len, dss->ahb, "dp_ahb");
+ msm_disp_snapshot_add_block(disp_state, dss->aux_len, dss->aux, "dp_aux");
+ msm_disp_snapshot_add_block(disp_state, dss->link_len, dss->link, "dp_link");
+ msm_disp_snapshot_add_block(disp_state, dss->p0_len, dss->p0, "dp_p0");
}
static inline u32 dp_read_aux(struct dp_catalog_private *catalog, u32 offset)
{
- offset += MSM_DP_CONTROLLER_AUX_OFFSET;
- return readl_relaxed(catalog->io->dp_controller.base + offset);
+ return readl_relaxed(catalog->io->dp_controller.aux + offset);
}
static inline void dp_write_aux(struct dp_catalog_private *catalog,
u32 offset, u32 data)
{
- offset += MSM_DP_CONTROLLER_AUX_OFFSET;
/*
* To make sure aux reg writes happens before any other operation,
* this function uses writel() instread of writel_relaxed()
*/
- writel(data, catalog->io->dp_controller.base + offset);
+ writel(data, catalog->io->dp_controller.aux + offset);
}
static inline u32 dp_read_ahb(struct dp_catalog_private *catalog, u32 offset)
{
- offset += MSM_DP_CONTROLLER_AHB_OFFSET;
- return readl_relaxed(catalog->io->dp_controller.base + offset);
+ return readl_relaxed(catalog->io->dp_controller.ahb + offset);
}
static inline void dp_write_ahb(struct dp_catalog_private *catalog,
u32 offset, u32 data)
{
- offset += MSM_DP_CONTROLLER_AHB_OFFSET;
/*
* To make sure phy reg writes happens before any other operation,
* this function uses writel() instread of writel_relaxed()
*/
- writel(data, catalog->io->dp_controller.base + offset);
+ writel(data, catalog->io->dp_controller.ahb + offset);
}
static inline void dp_write_p0(struct dp_catalog_private *catalog,
u32 offset, u32 data)
{
- offset += MSM_DP_CONTROLLER_P0_OFFSET;
/*
* To make sure interface reg writes happens before any other operation,
* this function uses writel() instread of writel_relaxed()
*/
- writel(data, catalog->io->dp_controller.base + offset);
+ writel(data, catalog->io->dp_controller.p0 + offset);
}
static inline u32 dp_read_p0(struct dp_catalog_private *catalog,
u32 offset)
{
- offset += MSM_DP_CONTROLLER_P0_OFFSET;
/*
* To make sure interface reg writes happens before any other operation,
* this function uses writel() instread of writel_relaxed()
*/
- return readl_relaxed(catalog->io->dp_controller.base + offset);
+ return readl_relaxed(catalog->io->dp_controller.p0 + offset);
}
static inline u32 dp_read_link(struct dp_catalog_private *catalog, u32 offset)
{
- offset += MSM_DP_CONTROLLER_LINK_OFFSET;
- return readl_relaxed(catalog->io->dp_controller.base + offset);
+ return readl_relaxed(catalog->io->dp_controller.link + offset);
}
static inline void dp_write_link(struct dp_catalog_private *catalog,
u32 offset, u32 data)
{
- offset += MSM_DP_CONTROLLER_LINK_OFFSET;
/*
* To make sure link reg writes happens before any other operation,
* this function uses writel() instread of writel_relaxed()
*/
- writel(data, catalog->io->dp_controller.base + offset);
+ writel(data, catalog->io->dp_controller.link + offset);
}
/* aux related catalog functions */
@@ -276,29 +262,21 @@ static void dump_regs(void __iomem *base, int len)
void dp_catalog_dump_regs(struct dp_catalog *dp_catalog)
{
- u32 offset, len;
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
+ struct dss_io_data *io = &catalog->io->dp_controller;
pr_info("AHB regs\n");
- offset = MSM_DP_CONTROLLER_AHB_OFFSET;
- len = MSM_DP_CONTROLLER_AHB_SIZE;
- dump_regs(catalog->io->dp_controller.base + offset, len);
+ dump_regs(io->ahb, io->ahb_len);
pr_info("AUXCLK regs\n");
- offset = MSM_DP_CONTROLLER_AUX_OFFSET;
- len = MSM_DP_CONTROLLER_AUX_SIZE;
- dump_regs(catalog->io->dp_controller.base + offset, len);
+ dump_regs(io->aux, io->aux_len);
pr_info("LCLK regs\n");
- offset = MSM_DP_CONTROLLER_LINK_OFFSET;
- len = MSM_DP_CONTROLLER_LINK_SIZE;
- dump_regs(catalog->io->dp_controller.base + offset, len);
+ dump_regs(io->link, io->link_len);
pr_info("P0CLK regs\n");
- offset = MSM_DP_CONTROLLER_P0_OFFSET;
- len = MSM_DP_CONTROLLER_P0_SIZE;
- dump_regs(catalog->io->dp_controller.base + offset, len);
+ dump_regs(io->p0, io->p0_len);
}
u32 dp_catalog_aux_get_irq(struct dp_catalog *dp_catalog)
@@ -492,8 +470,7 @@ int dp_catalog_ctrl_set_pattern(struct dp_catalog *dp_catalog,
bit = BIT(pattern - 1) << DP_MAINLINK_READY_LINK_TRAINING_SHIFT;
/* Poll for mainlink ready status */
- ret = readx_poll_timeout(readl, catalog->io->dp_controller.base +
- MSM_DP_CONTROLLER_LINK_OFFSET +
+ ret = readx_poll_timeout(readl, catalog->io->dp_controller.link +
REG_DP_MAINLINK_READY,
data, data & bit,
POLLING_SLEEP_US, POLLING_TIMEOUT_US);
@@ -540,8 +517,7 @@ bool dp_catalog_ctrl_mainlink_ready(struct dp_catalog *dp_catalog)
struct dp_catalog_private, dp_catalog);
/* Poll for mainlink ready status */
- ret = readl_poll_timeout(catalog->io->dp_controller.base +
- MSM_DP_CONTROLLER_LINK_OFFSET +
+ ret = readl_poll_timeout(catalog->io->dp_controller.link +
REG_DP_MAINLINK_READY,
data, data & DP_MAINLINK_READY_FOR_VIDEO,
POLLING_SLEEP_US, POLLING_TIMEOUT_US);
diff --git a/drivers/gpu/drm/msm/dp/dp_parser.c b/drivers/gpu/drm/msm/dp/dp_parser.c
index e68dacef547c..1a10901ae574 100644
--- a/drivers/gpu/drm/msm/dp/dp_parser.c
+++ b/drivers/gpu/drm/msm/dp/dp_parser.c
@@ -11,6 +11,15 @@
#include "dp_parser.h"
#include "dp_reg.h"
+#define DP_DEFAULT_AHB_OFFSET 0x0000
+#define DP_DEFAULT_AHB_SIZE 0x0200
+#define DP_DEFAULT_AUX_OFFSET 0x0200
+#define DP_DEFAULT_AUX_SIZE 0x0200
+#define DP_DEFAULT_LINK_OFFSET 0x0400
+#define DP_DEFAULT_LINK_SIZE 0x0C00
+#define DP_DEFAULT_P0_OFFSET 0x1000
+#define DP_DEFAULT_P0_SIZE 0x0400
+
static const struct dp_regulator_cfg sdm845_dp_reg_cfg = {
.num = 2,
.regs = {
@@ -48,12 +57,25 @@ static int dp_parser_ctrl_res(struct dp_parser *parser)
struct dp_io *io = &parser->io;
struct dss_io_data *dss = &io->dp_controller;
- dss->base = dp_ioremap(pdev, 0, &dss->len);
- if (IS_ERR(dss->base)) {
- DRM_ERROR("unable to remap dp io region: %pe\n", dss->base);
- return PTR_ERR(dss->base);
+ dss->ahb = dp_ioremap(pdev, 0, &dss->ahb_len);
+ if (IS_ERR(dss->ahb)) {
+ DRM_ERROR("unable to remap ahb region: %pe\n", dss->ahb);
+ return PTR_ERR(dss->ahb);
}
+ if (dss->ahb_len < DP_DEFAULT_P0_OFFSET + DP_DEFAULT_P0_SIZE) {
+ DRM_ERROR("legacy memory region not large enough\n");
+ return -EINVAL;
+ }
+
+ dss->ahb_len = DP_DEFAULT_AHB_SIZE;
+ dss->aux = dss->ahb + DP_DEFAULT_AUX_OFFSET;
+ dss->aux_len = DP_DEFAULT_AUX_SIZE;
+ dss->link = dss->ahb + DP_DEFAULT_LINK_OFFSET;
+ dss->link_len = DP_DEFAULT_LINK_SIZE;
+ dss->p0 = dss->ahb + DP_DEFAULT_P0_OFFSET;
+ dss->p0_len = DP_DEFAULT_P0_SIZE;
+
io->phy = devm_phy_get(&pdev->dev, "dp");
if (IS_ERR(io->phy))
return PTR_ERR(io->phy);
diff --git a/drivers/gpu/drm/msm/dp/dp_parser.h b/drivers/gpu/drm/msm/dp/dp_parser.h
index dc62e70b1640..3266b529c090 100644
--- a/drivers/gpu/drm/msm/dp/dp_parser.h
+++ b/drivers/gpu/drm/msm/dp/dp_parser.h
@@ -26,8 +26,14 @@ enum dp_pm_type {
};
struct dss_io_data {
- size_t len;
- void __iomem *base;
+ void __iomem *ahb;
+ size_t ahb_len;
+ void __iomem *aux;
+ size_t aux_len;
+ void __iomem *link;
+ size_t link_len;
+ void __iomem *p0;
+ size_t p0_len;
};
static inline const char *dp_parser_pm_name(enum dp_pm_type module)
--
2.29.2
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