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drm/msm/dp: move all IO handling to dp_catalog

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Rather than parsing the I/O addresses from dp_parser and then passing
them via a struct pointer to dp_catalog, handle I/O region parsing in
dp_catalog and drop it from dp_parser.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Tested-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Reviewed-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/576108/
Link: https://lore.kernel.org/r/20240126-dp-power-parser-cleanup-v3-12-098d5f581dd3@linaro.org
This commit is contained in:
Dmitry Baryshkov
2024-01-26 20:26:31 +02:00
parent f304bda5bf
commit 1577814118
5 changed files with 115 additions and 119 deletions
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127
drivers/gpu/drm/msm/dp/dp_catalog.c
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@@ -7,6 +7,7 @@
#include <linux/delay.h>
#include <linux/iopoll.h>
#include <linux/platform_device.h>
#include <linux/rational.h>
#include <drm/display/drm_dp_helper.h>
#include <drm/drm_print.h>
@@ -53,10 +54,31 @@
(PSR_UPDATE_MASK | PSR_CAPTURE_MASK | PSR_EXIT_MASK | \
PSR_UPDATE_ERROR_MASK | PSR_WAKE_ERROR_MASK)
#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
struct dss_io_region {
size_t len;
void __iomem *base;
};
struct dss_io_data {
struct dss_io_region ahb;
struct dss_io_region aux;
struct dss_io_region link;
struct dss_io_region p0;
};
struct dp_catalog_private {
struct device *dev;
struct drm_device *drm_dev;
struct dp_io *io;
struct dss_io_data io;
u32 (*audio_map)[DP_AUDIO_SDP_HEADER_MAX];
struct dp_catalog dp_catalog;
u8 aux_lut_cfg_index[PHY_AUX_CFG_MAX];
@@ -66,7 +88,7 @@ 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;
struct dss_io_data *dss = &catalog->io;
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");
@@ -76,7 +98,7 @@ void dp_catalog_snapshot(struct dp_catalog *dp_catalog, struct msm_disp_state *d
static inline u32 dp_read_aux(struct dp_catalog_private *catalog, u32 offset)
{
return readl_relaxed(catalog->io->dp_controller.aux.base + offset);
return readl_relaxed(catalog->io.aux.base + offset);
}
static inline void dp_write_aux(struct dp_catalog_private *catalog,
@@ -86,12 +108,12 @@ static inline void dp_write_aux(struct dp_catalog_private *catalog,
* 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.aux.base + offset);
writel(data, catalog->io.aux.base + offset);
}
static inline u32 dp_read_ahb(const struct dp_catalog_private *catalog, u32 offset)
{
return readl_relaxed(catalog->io->dp_controller.ahb.base + offset);
return readl_relaxed(catalog->io.ahb.base + offset);
}
static inline void dp_write_ahb(struct dp_catalog_private *catalog,
@@ -101,7 +123,7 @@ static inline void dp_write_ahb(struct dp_catalog_private *catalog,
* 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.ahb.base + offset);
writel(data, catalog->io.ahb.base + offset);
}
static inline void dp_write_p0(struct dp_catalog_private *catalog,
@@ -111,7 +133,7 @@ static inline void dp_write_p0(struct dp_catalog_private *catalog,
* 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.p0.base + offset);
writel(data, catalog->io.p0.base + offset);
}
static inline u32 dp_read_p0(struct dp_catalog_private *catalog,
@@ -121,12 +143,12 @@ static inline u32 dp_read_p0(struct dp_catalog_private *catalog,
* 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.p0.base + offset);
return readl_relaxed(catalog->io.p0.base + offset);
}
static inline u32 dp_read_link(struct dp_catalog_private *catalog, u32 offset)
{
return readl_relaxed(catalog->io->dp_controller.link.base + offset);
return readl_relaxed(catalog->io.link.base + offset);
}
static inline void dp_write_link(struct dp_catalog_private *catalog,
@@ -136,7 +158,7 @@ static inline void dp_write_link(struct dp_catalog_private *catalog,
* 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.link.base + offset);
writel(data, catalog->io.link.base + offset);
}
/* aux related catalog functions */
@@ -248,7 +270,7 @@ int dp_catalog_aux_wait_for_hpd_connect_state(struct dp_catalog *dp_catalog)
struct dp_catalog_private, dp_catalog);
/* poll for hpd connected status every 2ms and timeout after 500ms */
return readl_poll_timeout(catalog->io->dp_controller.aux.base +
return readl_poll_timeout(catalog->io.aux.base +
REG_DP_DP_HPD_INT_STATUS,
state, state & DP_DP_HPD_STATE_STATUS_CONNECTED,
2000, 500000);
@@ -276,7 +298,7 @@ void dp_catalog_dump_regs(struct dp_catalog *dp_catalog)
{
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
struct dss_io_data *io = &catalog->io->dp_controller;
struct dss_io_data *io = &catalog->io;
pr_info("AHB regs\n");
dump_regs(io->ahb.base, io->ahb.len);
@@ -500,7 +522,7 @@ int dp_catalog_ctrl_set_pattern_state_bit(struct dp_catalog *dp_catalog,
bit = BIT(state_bit - 1) << DP_MAINLINK_READY_LINK_TRAINING_SHIFT;
/* Poll for mainlink ready status */
ret = readx_poll_timeout(readl, catalog->io->dp_controller.link.base +
ret = readx_poll_timeout(readl, catalog->io.link.base +
REG_DP_MAINLINK_READY,
data, data & bit,
POLLING_SLEEP_US, POLLING_TIMEOUT_US);
@@ -563,7 +585,7 @@ 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.link.base +
ret = readl_poll_timeout(catalog->io.link.base +
REG_DP_MAINLINK_READY,
data, data & DP_MAINLINK_READY_FOR_VIDEO,
POLLING_SLEEP_US, POLLING_TIMEOUT_US);
@@ -945,21 +967,84 @@ void dp_catalog_panel_tpg_disable(struct dp_catalog *dp_catalog)
dp_write_p0(catalog, MMSS_DP_TIMING_ENGINE_EN, 0x0);
}
struct dp_catalog *dp_catalog_get(struct device *dev, struct dp_io *io)
static void __iomem *dp_ioremap(struct platform_device *pdev, int idx, size_t *len)
{
struct resource *res;
void __iomem *base;
base = devm_platform_get_and_ioremap_resource(pdev, idx, &res);
if (!IS_ERR(base))
*len = resource_size(res);
return base;
}
static int dp_catalog_get_io(struct dp_catalog_private *catalog)
{
struct platform_device *pdev = to_platform_device(catalog->dev);
struct dss_io_data *dss = &catalog->io;
dss->ahb.base = dp_ioremap(pdev, 0, &dss->ahb.len);
if (IS_ERR(dss->ahb.base))
return PTR_ERR(dss->ahb.base);
dss->aux.base = dp_ioremap(pdev, 1, &dss->aux.len);
if (IS_ERR(dss->aux.base)) {
/*
* The initial binding had a single reg, but in order to
* support variation in the sub-region sizes this was split.
* dp_ioremap() will fail with -EINVAL here if only a single
* reg is specified, so fill in the sub-region offsets and
* lengths based on this single region.
*/
if (PTR_ERR(dss->aux.base) == -EINVAL) {
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;
} else {
DRM_ERROR("unable to remap aux region: %pe\n", dss->aux.base);
return PTR_ERR(dss->aux.base);
}
} else {
dss->link.base = dp_ioremap(pdev, 2, &dss->link.len);
if (IS_ERR(dss->link.base)) {
DRM_ERROR("unable to remap link region: %pe\n", dss->link.base);
return PTR_ERR(dss->link.base);
}
dss->p0.base = dp_ioremap(pdev, 3, &dss->p0.len);
if (IS_ERR(dss->p0.base)) {
DRM_ERROR("unable to remap p0 region: %pe\n", dss->p0.base);
return PTR_ERR(dss->p0.base);
}
}
return 0;
}
struct dp_catalog *dp_catalog_get(struct device *dev)
{
struct dp_catalog_private *catalog;
if (!io) {
DRM_ERROR("invalid input\n");
return ERR_PTR(-EINVAL);
}
int ret;
catalog = devm_kzalloc(dev, sizeof(*catalog), GFP_KERNEL);
if (!catalog)
return ERR_PTR(-ENOMEM);
catalog->dev = dev;
catalog->io = io;
ret = dp_catalog_get_io(catalog);
if (ret)
return ERR_PTR(ret);
return &catalog->dp_catalog;
}