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platform_kernel-5.15
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OMAPDSS: DPI: Use DPI driver data 

DPI related data is currently a static global struct parameter. It is accessed
directly by functions in the driver.

This method won't work if we want the driver to support multiple DPI instances.
Create struct dpi_data, and pass its pointer to functions which need to use it.

We still have a static instance defined for dpi_data, which is accessed by top
level DPI ops. This will be removed when the driver dynamically allocates
dpi_data for each DPI instance.

Signed-off-by: Archit Taneja <archit@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
This commit is contained in:
Archit Taneja 2014-05-30 16:26:22 +05:30 committed by Tomi Valkeinen
parent 0df1f2487d
commit 630d2d0de6
1 changed files with 107 additions and 80 deletions
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187
drivers/video/fbdev/omap2/dss/dpi.c
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@ -37,7 +37,7 @@
#include "dss.h" #include "dss.h"
#include "dss_features.h" #include "dss_features.h"
static struct { struct dpi_data {
struct platform_device *pdev; struct platform_device *pdev;
struct regulator *vdds_dsi_reg; struct regulator *vdds_dsi_reg;
@ -52,7 +52,9 @@ static struct {
struct omap_dss_device output; struct omap_dss_device output;
bool port_initialized; bool port_initialized;
} dpi; };
static struct dpi_data dpi_data;
static struct platform_device *dpi_get_dsidev(enum omap_channel channel) static struct platform_device *dpi_get_dsidev(enum omap_channel channel)
{ {
@ -200,15 +202,16 @@ static bool dpi_calc_dss_cb(unsigned long fck, void *data)
dpi_calc_dispc_cb, ctx); dpi_calc_dispc_cb, ctx);
} }
static bool dpi_dsi_clk_calc(unsigned long pck, struct dpi_clk_calc_ctx *ctx) static bool dpi_dsi_clk_calc(struct dpi_data *dpi, unsigned long pck,
struct dpi_clk_calc_ctx *ctx)
{ {
unsigned long clkin; unsigned long clkin;
unsigned long pll_min, pll_max; unsigned long pll_min, pll_max;
clkin = dsi_get_pll_clkin(dpi.dsidev); clkin = dsi_get_pll_clkin(dpi->dsidev);
memset(ctx, 0, sizeof(*ctx)); memset(ctx, 0, sizeof(*ctx));
ctx->dsidev = dpi.dsidev; ctx->dsidev = dpi->dsidev;
ctx->pck_min = pck - 1000; ctx->pck_min = pck - 1000;
ctx->pck_max = pck + 1000; ctx->pck_max = pck + 1000;
ctx->dsi_cinfo.clkin = clkin; ctx->dsi_cinfo.clkin = clkin;
@ -216,7 +219,7 @@ static bool dpi_dsi_clk_calc(unsigned long pck, struct dpi_clk_calc_ctx *ctx)
pll_min = 0; pll_min = 0;
pll_max = 0; pll_max = 0;
return dsi_pll_calc(dpi.dsidev, clkin, return dsi_pll_calc(dpi->dsidev, clkin,
pll_min, pll_max, pll_min, pll_max,
dpi_calc_pll_cb, ctx); dpi_calc_pll_cb, ctx);
} }
@ -252,7 +255,7 @@ static bool dpi_dss_clk_calc(unsigned long pck, struct dpi_clk_calc_ctx *ctx)
static int dpi_set_dsi_clk(enum omap_channel channel, static int dpi_set_dsi_clk(struct dpi_data *dpi, enum omap_channel channel,
unsigned long pck_req, unsigned long *fck, int *lck_div, unsigned long pck_req, unsigned long *fck, int *lck_div,
int *pck_div) int *pck_div)
{ {
@ -260,18 +263,18 @@ static int dpi_set_dsi_clk(enum omap_channel channel,
int r; int r;
bool ok; bool ok;
ok = dpi_dsi_clk_calc(pck_req, &ctx); ok = dpi_dsi_clk_calc(dpi, pck_req, &ctx);
if (!ok) if (!ok)
return -EINVAL; return -EINVAL;
r = dsi_pll_set_clock_div(dpi.dsidev, &ctx.dsi_cinfo); r = dsi_pll_set_clock_div(dpi->dsidev, &ctx.dsi_cinfo);
if (r) if (r)
return r; return r;
dss_select_lcd_clk_source(channel, dss_select_lcd_clk_source(channel,
dpi_get_alt_clk_src(channel)); dpi_get_alt_clk_src(channel));
dpi.mgr_config.clock_info = ctx.dispc_cinfo; dpi->mgr_config.clock_info = ctx.dispc_cinfo;
*fck = ctx.dsi_cinfo.dsi_pll_hsdiv_dispc_clk; *fck = ctx.dsi_cinfo.dsi_pll_hsdiv_dispc_clk;
*lck_div = ctx.dispc_cinfo.lck_div; *lck_div = ctx.dispc_cinfo.lck_div;
@ -280,8 +283,8 @@ static int dpi_set_dsi_clk(enum omap_channel channel,
return 0; return 0;
} }
static int dpi_set_dispc_clk(unsigned long pck_req, unsigned long *fck, static int dpi_set_dispc_clk(struct dpi_data *dpi, unsigned long pck_req,
int *lck_div, int *pck_div) unsigned long *fck, int *lck_div, int *pck_div)
{ {
struct dpi_clk_calc_ctx ctx; struct dpi_clk_calc_ctx ctx;
int r; int r;
@ -295,7 +298,7 @@ static int dpi_set_dispc_clk(unsigned long pck_req, unsigned long *fck,
if (r) if (r)
return r; return r;
dpi.mgr_config.clock_info = ctx.dispc_cinfo; dpi->mgr_config.clock_info = ctx.dispc_cinfo;
*fck = ctx.fck; *fck = ctx.fck;
*lck_div = ctx.dispc_cinfo.lck_div; *lck_div = ctx.dispc_cinfo.lck_div;
@ -304,19 +307,21 @@ static int dpi_set_dispc_clk(unsigned long pck_req, unsigned long *fck,
return 0; return 0;
} }
static int dpi_set_mode(struct omap_overlay_manager *mgr) static int dpi_set_mode(struct dpi_data *dpi)
{ {
struct omap_video_timings *t = &dpi.timings; struct omap_dss_device *out = &dpi->output;
struct omap_overlay_manager *mgr = out->manager;
struct omap_video_timings *t = &dpi->timings;
int lck_div = 0, pck_div = 0; int lck_div = 0, pck_div = 0;
unsigned long fck = 0; unsigned long fck = 0;
unsigned long pck; unsigned long pck;
int r = 0; int r = 0;
if (dpi.dsidev) if (dpi->dsidev)
r = dpi_set_dsi_clk(mgr->id, t->pixelclock, &fck, r = dpi_set_dsi_clk(dpi, mgr->id, t->pixelclock, &fck,
&lck_div, &pck_div); &lck_div, &pck_div);
else else
r = dpi_set_dispc_clk(t->pixelclock, &fck, r = dpi_set_dispc_clk(dpi, t->pixelclock, &fck,
&lck_div, &pck_div); &lck_div, &pck_div);
if (r) if (r)
return r; return r;
@ -335,28 +340,32 @@ static int dpi_set_mode(struct omap_overlay_manager *mgr)
return 0; return 0;
} }
static void dpi_config_lcd_manager(struct omap_overlay_manager *mgr) static void dpi_config_lcd_manager(struct dpi_data *dpi)
{ {
dpi.mgr_config.io_pad_mode = DSS_IO_PAD_MODE_BYPASS; struct omap_dss_device *out = &dpi->output;
struct omap_overlay_manager *mgr = out->manager;
dpi.mgr_config.stallmode = false; dpi->mgr_config.io_pad_mode = DSS_IO_PAD_MODE_BYPASS;
dpi.mgr_config.fifohandcheck = false;
dpi.mgr_config.video_port_width = dpi.data_lines; dpi->mgr_config.stallmode = false;
dpi->mgr_config.fifohandcheck = false;
dpi.mgr_config.lcden_sig_polarity = 0; dpi->mgr_config.video_port_width = dpi->data_lines;
dss_mgr_set_lcd_config(mgr, &dpi.mgr_config); dpi->mgr_config.lcden_sig_polarity = 0;
dss_mgr_set_lcd_config(mgr, &dpi->mgr_config);
} }
static int dpi_display_enable(struct omap_dss_device *dssdev) static int dpi_display_enable(struct omap_dss_device *dssdev)
{ {
struct omap_dss_device *out = &dpi.output; struct dpi_data *dpi = &dpi_data;
struct omap_dss_device *out = &dpi->output;
int r; int r;
mutex_lock(&dpi.lock); mutex_lock(&dpi->lock);
if (dss_has_feature(FEAT_DPI_USES_VDDS_DSI) && !dpi.vdds_dsi_reg) { if (dss_has_feature(FEAT_DPI_USES_VDDS_DSI) && !dpi->vdds_dsi_reg) {
DSSERR("no VDSS_DSI regulator\n"); DSSERR("no VDSS_DSI regulator\n");
r = -ENODEV; r = -ENODEV;
goto err_no_reg; goto err_no_reg;
@ -369,7 +378,7 @@ static int dpi_display_enable(struct omap_dss_device *dssdev)
} }
if (dss_has_feature(FEAT_DPI_USES_VDDS_DSI)) { if (dss_has_feature(FEAT_DPI_USES_VDDS_DSI)) {
r = regulator_enable(dpi.vdds_dsi_reg); r = regulator_enable(dpi->vdds_dsi_reg);
if (r) if (r)
goto err_reg_enable; goto err_reg_enable;
} }
@ -382,21 +391,21 @@ static int dpi_display_enable(struct omap_dss_device *dssdev)
if (r) if (r)
goto err_src_sel; goto err_src_sel;
if (dpi.dsidev) { if (dpi->dsidev) {
r = dsi_runtime_get(dpi.dsidev); r = dsi_runtime_get(dpi->dsidev);
if (r) if (r)
goto err_get_dsi; goto err_get_dsi;
r = dsi_pll_init(dpi.dsidev, 0, 1); r = dsi_pll_init(dpi->dsidev, 0, 1);
if (r) if (r)
goto err_dsi_pll_init; goto err_dsi_pll_init;
} }
r = dpi_set_mode(out->manager); r = dpi_set_mode(dpi);
if (r) if (r)
goto err_set_mode; goto err_set_mode;
dpi_config_lcd_manager(out->manager); dpi_config_lcd_manager(dpi);
mdelay(2); mdelay(2);
@ -404,78 +413,84 @@ static int dpi_display_enable(struct omap_dss_device *dssdev)
if (r) if (r)
goto err_mgr_enable; goto err_mgr_enable;
mutex_unlock(&dpi.lock); mutex_unlock(&dpi->lock);
return 0; return 0;
err_mgr_enable: err_mgr_enable:
err_set_mode: err_set_mode:
if (dpi.dsidev) if (dpi->dsidev)
dsi_pll_uninit(dpi.dsidev, true); dsi_pll_uninit(dpi->dsidev, true);
err_dsi_pll_init: err_dsi_pll_init:
if (dpi.dsidev) if (dpi->dsidev)
dsi_runtime_put(dpi.dsidev); dsi_runtime_put(dpi->dsidev);
err_get_dsi: err_get_dsi:
err_src_sel: err_src_sel:
dispc_runtime_put(); dispc_runtime_put();
err_get_dispc: err_get_dispc:
if (dss_has_feature(FEAT_DPI_USES_VDDS_DSI)) if (dss_has_feature(FEAT_DPI_USES_VDDS_DSI))
regulator_disable(dpi.vdds_dsi_reg); regulator_disable(dpi->vdds_dsi_reg);
err_reg_enable: err_reg_enable:
err_no_out_mgr: err_no_out_mgr:
err_no_reg: err_no_reg:
mutex_unlock(&dpi.lock); mutex_unlock(&dpi->lock);
return r; return r;
} }
static void dpi_display_disable(struct omap_dss_device *dssdev) static void dpi_display_disable(struct omap_dss_device *dssdev)
{ {
struct omap_overlay_manager *mgr = dpi.output.manager; struct dpi_data *dpi = &dpi_data;
struct omap_overlay_manager *mgr = dpi->output.manager;
mutex_lock(&dpi.lock); mutex_lock(&dpi->lock);
dss_mgr_disable(mgr); dss_mgr_disable(mgr);
if (dpi.dsidev) { if (dpi->dsidev) {
dss_select_lcd_clk_source(mgr->id, OMAP_DSS_CLK_SRC_FCK); dss_select_lcd_clk_source(mgr->id, OMAP_DSS_CLK_SRC_FCK);
dsi_pll_uninit(dpi.dsidev, true); dsi_pll_uninit(dpi->dsidev, true);
dsi_runtime_put(dpi.dsidev); dsi_runtime_put(dpi->dsidev);
} }
dispc_runtime_put(); dispc_runtime_put();
if (dss_has_feature(FEAT_DPI_USES_VDDS_DSI)) if (dss_has_feature(FEAT_DPI_USES_VDDS_DSI))
regulator_disable(dpi.vdds_dsi_reg); regulator_disable(dpi->vdds_dsi_reg);
mutex_unlock(&dpi.lock); mutex_unlock(&dpi->lock);
} }
static void dpi_set_timings(struct omap_dss_device *dssdev, static void dpi_set_timings(struct omap_dss_device *dssdev,
struct omap_video_timings *timings) struct omap_video_timings *timings)
{ {
struct dpi_data *dpi = &dpi_data;
DSSDBG("dpi_set_timings\n"); DSSDBG("dpi_set_timings\n");
mutex_lock(&dpi.lock); mutex_lock(&dpi->lock);
dpi.timings = *timings; dpi->timings = *timings;
mutex_unlock(&dpi.lock); mutex_unlock(&dpi->lock);
} }
static void dpi_get_timings(struct omap_dss_device *dssdev, static void dpi_get_timings(struct omap_dss_device *dssdev,
struct omap_video_timings *timings) struct omap_video_timings *timings)
{ {
mutex_lock(&dpi.lock); struct dpi_data *dpi = &dpi_data;
*timings = dpi.timings; mutex_lock(&dpi->lock);
mutex_unlock(&dpi.lock); *timings = dpi->timings;
mutex_unlock(&dpi->lock);
} }
static int dpi_check_timings(struct omap_dss_device *dssdev, static int dpi_check_timings(struct omap_dss_device *dssdev,
struct omap_video_timings *timings) struct omap_video_timings *timings)
{ {
struct omap_overlay_manager *mgr = dpi.output.manager; struct dpi_data *dpi = &dpi_data;
struct omap_overlay_manager *mgr = dpi->output.manager;
int lck_div, pck_div; int lck_div, pck_div;
unsigned long fck; unsigned long fck;
unsigned long pck; unsigned long pck;
@ -488,8 +503,8 @@ static int dpi_check_timings(struct omap_dss_device *dssdev,
if (timings->pixelclock == 0) if (timings->pixelclock == 0)
return -EINVAL; return -EINVAL;
if (dpi.dsidev) { if (dpi->dsidev) {
ok = dpi_dsi_clk_calc(timings->pixelclock, &ctx); ok = dpi_dsi_clk_calc(dpi, timings->pixelclock, &ctx);
if (!ok) if (!ok)
return -EINVAL; return -EINVAL;
@ -514,11 +529,13 @@ static int dpi_check_timings(struct omap_dss_device *dssdev,
static void dpi_set_data_lines(struct omap_dss_device *dssdev, int data_lines) static void dpi_set_data_lines(struct omap_dss_device *dssdev, int data_lines)
{ {
mutex_lock(&dpi.lock); struct dpi_data *dpi = &dpi_data;
dpi.data_lines = data_lines; mutex_lock(&dpi->lock);
mutex_unlock(&dpi.lock); dpi->data_lines = data_lines;
mutex_unlock(&dpi->lock);
} }
static int dpi_verify_dsi_pll(struct platform_device *dsidev) static int dpi_verify_dsi_pll(struct platform_device *dsidev)
@ -543,36 +560,36 @@ static int dpi_verify_dsi_pll(struct platform_device *dsidev)
return 0; return 0;
} }
static int dpi_init_regulator(void) static int dpi_init_regulator(struct dpi_data *dpi)
{ {
struct regulator *vdds_dsi; struct regulator *vdds_dsi;
if (!dss_has_feature(FEAT_DPI_USES_VDDS_DSI)) if (!dss_has_feature(FEAT_DPI_USES_VDDS_DSI))
return 0; return 0;
if (dpi.vdds_dsi_reg) if (dpi->vdds_dsi_reg)
return 0; return 0;
vdds_dsi = devm_regulator_get(&dpi.pdev->dev, "vdds_dsi"); vdds_dsi = devm_regulator_get(&dpi->pdev->dev, "vdds_dsi");
if (IS_ERR(vdds_dsi)) { if (IS_ERR(vdds_dsi)) {
if (PTR_ERR(vdds_dsi) != -EPROBE_DEFER) if (PTR_ERR(vdds_dsi) != -EPROBE_DEFER)
DSSERR("can't get VDDS_DSI regulator\n"); DSSERR("can't get VDDS_DSI regulator\n");
return PTR_ERR(vdds_dsi); return PTR_ERR(vdds_dsi);
} }
dpi.vdds_dsi_reg = vdds_dsi; dpi->vdds_dsi_reg = vdds_dsi;
return 0; return 0;
} }
static void dpi_init_pll(void) static void dpi_init_pll(struct dpi_data *dpi)
{ {
struct platform_device *dsidev; struct platform_device *dsidev;
if (dpi.dsidev) if (dpi->dsidev)
return; return;
dsidev = dpi_get_dsidev(dpi.output.dispc_channel); dsidev = dpi_get_dsidev(dpi->output.dispc_channel);
if (!dsidev) if (!dsidev)
return; return;
@ -581,7 +598,7 @@ static void dpi_init_pll(void)
return; return;
} }
dpi.dsidev = dsidev; dpi->dsidev = dsidev;
} }
/* /*
@ -618,14 +635,15 @@ static enum omap_channel dpi_get_channel(void)
static int dpi_connect(struct omap_dss_device *dssdev, static int dpi_connect(struct omap_dss_device *dssdev,
struct omap_dss_device *dst) struct omap_dss_device *dst)
{ {
struct dpi_data *dpi = &dpi_data;
struct omap_overlay_manager *mgr; struct omap_overlay_manager *mgr;
int r; int r;
r = dpi_init_regulator(); r = dpi_init_regulator(dpi);
if (r) if (r)
return r; return r;
dpi_init_pll(); dpi_init_pll(dpi);
mgr = omap_dss_get_overlay_manager(dssdev->dispc_channel); mgr = omap_dss_get_overlay_manager(dssdev->dispc_channel);
if (!mgr) if (!mgr)
@ -676,7 +694,8 @@ static const struct omapdss_dpi_ops dpi_ops = {
static void dpi_init_output(struct platform_device *pdev) static void dpi_init_output(struct platform_device *pdev)
{ {
struct omap_dss_device *out = &dpi.output; struct dpi_data *dpi = &dpi_data;
struct omap_dss_device *out = &dpi->output;
out->dev = &pdev->dev; out->dev = &pdev->dev;
out->id = OMAP_DSS_OUTPUT_DPI; out->id = OMAP_DSS_OUTPUT_DPI;
@ -691,16 +710,21 @@ static void dpi_init_output(struct platform_device *pdev)
static void __exit dpi_uninit_output(struct platform_device *pdev) static void __exit dpi_uninit_output(struct platform_device *pdev)
{ {
struct omap_dss_device *out = &dpi.output; struct dpi_data *dpi = &dpi_data;
struct omap_dss_device *out = &dpi->output;
omapdss_unregister_output(out); omapdss_unregister_output(out);
} }
static int omap_dpi_probe(struct platform_device *pdev) static int omap_dpi_probe(struct platform_device *pdev)
{ {
dpi.pdev = pdev; struct dpi_data *dpi = &dpi_data;
mutex_init(&dpi.lock); dpi->pdev = pdev;
dev_set_drvdata(&pdev->dev, dpi);
mutex_init(&dpi->lock);
dpi_init_output(pdev); dpi_init_output(pdev);
@ -736,6 +760,7 @@ void __exit dpi_uninit_platform_driver(void)
int __init dpi_init_port(struct platform_device *pdev, struct device_node *port) int __init dpi_init_port(struct platform_device *pdev, struct device_node *port)
{ {
struct dpi_data *dpi = &dpi_data;
struct device_node *ep; struct device_node *ep;
u32 datalines; u32 datalines;
int r; int r;
@ -750,17 +775,17 @@ int __init dpi_init_port(struct platform_device *pdev, struct device_node *port)
goto err_datalines; goto err_datalines;
} }
dpi.data_lines = datalines; dpi->data_lines = datalines;
of_node_put(ep); of_node_put(ep);
dpi.pdev = pdev; dpi->pdev = pdev;
mutex_init(&dpi.lock); mutex_init(&dpi->lock);
dpi_init_output(pdev); dpi_init_output(pdev);
dpi.port_initialized = true; dpi->port_initialized = true;
return 0; return 0;
@ -772,8 +797,10 @@ int __init dpi_init_port(struct platform_device *pdev, struct device_node *port)
void __exit dpi_uninit_port(void) void __exit dpi_uninit_port(void)
{ {
if (!dpi.port_initialized) struct dpi_data *dpi = &dpi_data;
if (!dpi->port_initialized)
return; return;
dpi_uninit_output(dpi.pdev); dpi_uninit_output(dpi->pdev);
} }