[PATCH v2 4/5] drm/msm/dp: Store each subblock in the io region
From: Bjorn Andersson
Date: Wed Aug 25 2021 - 18:24:59 EST
Not all platforms has DP_P0 at offset 0x1000 from the beginning of the
DP block. So split the dss_io_data memory region into a set of
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@xxxxxxxxxx>
---
Changes since v1:
- Fixed nonsensical commit message
- Introduced dss_io_region to group base and len
drivers/gpu/drm/msm/dp/dp_catalog.c | 64 +++++++++--------------------
drivers/gpu/drm/msm/dp/dp_parser.c | 28 +++++++++++--
drivers/gpu/drm/msm/dp/dp_parser.h | 11 ++++-
3 files changed, 54 insertions(+), 49 deletions(-)
diff --git a/drivers/gpu/drm/msm/dp/dp_catalog.c b/drivers/gpu/drm/msm/dp/dp_catalog.c
index cc2bb8295329..6ae9b29044b6 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.base, "dp_ahb");
+ msm_disp_snapshot_add_block(disp_state, dss->aux.len, dss->aux.base, "dp_aux");
+ msm_disp_snapshot_add_block(disp_state, dss->link.len, dss->link.base, "dp_link");
+ msm_disp_snapshot_add_block(disp_state, dss->p0.len, dss->p0.base, "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.base + 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.base + 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.base + 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.base + 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.base + 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.base + 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.base + 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.base + 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.base, 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.base, 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.base, 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.base, io->p0.len);
}
u32 dp_catalog_aux_get_irq(struct dp_catalog *dp_catalog)
@@ -493,8 +471,7 @@ 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.base +
REG_DP_MAINLINK_READY,
data, data & bit,
POLLING_SLEEP_US, POLLING_TIMEOUT_US);
@@ -541,8 +518,7 @@ 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.base +
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 215065336268..4a7dad86159f 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 = {
@@ -40,9 +49,22 @@ 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))
- return PTR_ERR(dss->base);
+ dss->ahb.base = dp_ioremap(pdev, 0, &dss->ahb.len);
+ if (IS_ERR(dss->ahb.base))
+ return PTR_ERR(dss->ahb.base);
+
+ 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.base = dss->ahb.base + DP_DEFAULT_AUX_OFFSET;
+ dss->aux.len = DP_DEFAULT_AUX_SIZE;
+ dss->link.base = dss->ahb.base + DP_DEFAULT_LINK_OFFSET;
+ dss->link.len = DP_DEFAULT_LINK_SIZE;
+ dss->p0.base = dss->ahb.base + DP_DEFAULT_P0_OFFSET;
+ dss->p0.len = DP_DEFAULT_P0_SIZE;
io->phy = devm_phy_get(&pdev->dev, "dp");
if (IS_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..a95b05dbb11c 100644
--- a/drivers/gpu/drm/msm/dp/dp_parser.h
+++ b/drivers/gpu/drm/msm/dp/dp_parser.h
@@ -25,9 +25,16 @@ enum dp_pm_type {
DP_MAX_PM
};
-struct dss_io_data {
- size_t len;
+struct dss_io_region {
void __iomem *base;
+ size_t len;
+};
+
+struct dss_io_data {
+ struct dss_io_region ahb;
+ struct dss_io_region aux;
+ struct dss_io_region link;
+ struct dss_io_region p0;
};
static inline const char *dp_parser_pm_name(enum dp_pm_type module)
--
2.29.2