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cloud-kernel
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提交 8b9cb3a8 编写于 作者: S Senthilvadivu Guruswamy 提交者： Tomi Valkeinen
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OMAP2, 3: DSS2: Move clocks from core driver to dss driver 

All clock management is moved to dss platform driver. clk_get/put APIs use
dss device instead of core platform device.

Hwmod adaptation design requires each of the DSS HW IP to be a platform driver.
So the device name is changed from omapdss to omapdss_dss in 2420, 2430,
3xxx clock database files. Now the core driver "omapdss" only takes care
of panel registration with the custom bus.
core driver also uses the clk_enable() / clk_disable() APIs exposed by DSS for
clock management.
DSS driver would do clock management of clocks needed by DISPC, RFBI, DSI, VENC

TODO:  The clock content would be adapted to omap_hwmod in a seperate series.
Signed-off-by: NSenthilvadivu Guruswamy <svadivu@ti.com>
Signed-off-by: NSumit Semwal <sumit.semwal@ti.com>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
上级 96c401bc
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arch/arm/mach-omap2/clock2420_data.c
浏览文件 @ 8b9cb3a8
......@@ -1786,10 +1786,10 @@ static struct omap_clk omap2420_clks[] = {
CLK(NULL, "gfx_2d_fck", &gfx_2d_fck, CK_242X),
CLK(NULL, "gfx_ick", &gfx_ick, CK_242X),
/* DSS domain clocks */
CLK("omapdss", "ick", &dss_ick, CK_242X),
CLK("omapdss", "dss1_fck", &dss1_fck, CK_242X),
CLK("omapdss", "dss2_fck", &dss2_fck, CK_242X),
CLK("omapdss", "tv_fck", &dss_54m_fck, CK_242X),
CLK("omapdss_dss", "ick", &dss_ick, CK_242X),
CLK("omapdss_dss", "dss1_fck", &dss1_fck, CK_242X),
CLK("omapdss_dss", "dss2_fck", &dss2_fck, CK_242X),
CLK("omapdss_dss", "tv_fck", &dss_54m_fck, CK_242X),
/* L3 domain clocks */
CLK(NULL, "core_l3_ck", &core_l3_ck, CK_242X),
CLK(NULL, "ssi_fck", &ssi_ssr_sst_fck, CK_242X),
......
arch/arm/mach-omap2/clock2430_data.c
浏览文件 @ 8b9cb3a8
......@@ -1890,10 +1890,10 @@ static struct omap_clk omap2430_clks[] = {
CLK(NULL, "mdm_ick", &mdm_ick, CK_243X),
CLK(NULL, "mdm_osc_ck", &mdm_osc_ck, CK_243X),
/* DSS domain clocks */
CLK("omapdss", "ick", &dss_ick, CK_243X),
CLK("omapdss", "dss1_fck", &dss1_fck, CK_243X),
CLK("omapdss", "dss2_fck", &dss2_fck, CK_243X),
CLK("omapdss", "tv_fck", &dss_54m_fck, CK_243X),
CLK("omapdss_dss", "ick", &dss_ick, CK_243X),
CLK("omapdss_dss", "dss1_fck", &dss1_fck, CK_243X),
CLK("omapdss_dss", "dss2_fck", &dss2_fck, CK_243X),
CLK("omapdss_dss", "tv_fck", &dss_54m_fck, CK_243X),
/* L3 domain clocks */
CLK(NULL, "core_l3_ck", &core_l3_ck, CK_243X),
CLK(NULL, "ssi_fck", &ssi_ssr_sst_fck, CK_243X),
......
arch/arm/mach-omap2/clock3xxx_data.c
浏览文件 @ 8b9cb3a8
......@@ -3357,13 +3357,13 @@ static struct omap_clk omap3xxx_clks[] = {
CLK("omap_rng", "ick", &rng_ick, CK_34XX | CK_36XX),
CLK(NULL, "sha11_ick", &sha11_ick, CK_34XX | CK_36XX),
CLK(NULL, "des1_ick", &des1_ick, CK_34XX | CK_36XX),
CLK("omapdss", "dss1_fck", &dss1_alwon_fck_3430es1, CK_3430ES1),
CLK("omapdss", "dss1_fck", &dss1_alwon_fck_3430es2, CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
CLK("omapdss", "tv_fck", &dss_tv_fck, CK_3XXX),
CLK("omapdss", "video_fck", &dss_96m_fck, CK_3XXX),
CLK("omapdss", "dss2_fck", &dss2_alwon_fck, CK_3XXX),
CLK("omapdss", "ick", &dss_ick_3430es1, CK_3430ES1),
CLK("omapdss", "ick", &dss_ick_3430es2, CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
CLK("omapdss_dss", "dss1_fck", &dss1_alwon_fck_3430es1, CK_3430ES1),
CLK("omapdss_dss", "dss1_fck", &dss1_alwon_fck_3430es2, CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
CLK("omapdss_dss", "tv_fck", &dss_tv_fck, CK_3XXX),
CLK("omapdss_dss", "video_fck", &dss_96m_fck, CK_3XXX),
CLK("omapdss_dss", "dss2_fck", &dss2_alwon_fck, CK_3XXX),
CLK("omapdss_dss", "ick", &dss_ick_3430es1, CK_3430ES1),
CLK("omapdss_dss", "ick", &dss_ick_3430es2, CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
CLK(NULL, "cam_mclk", &cam_mclk, CK_34XX | CK_36XX),
CLK(NULL, "cam_ick", &cam_ick, CK_34XX | CK_36XX),
CLK(NULL, "csi2_96m_fck", &csi2_96m_fck, CK_34XX | CK_36XX),
......
drivers/video/omap2/dss/core.c
浏览文件 @ 8b9cb3a8
......@@ -34,32 +34,18 @@
#include <linux/regulator/consumer.h>
#include <plat/display.h>
#include <plat/clock.h>
#include "dss.h"
#include "dss_features.h"
static struct {
struct platform_device *pdev;
int ctx_id;
struct clk *dss_ick;
struct clk *dss1_fck;
struct clk *dss2_fck;
struct clk *dss_54m_fck;
struct clk *dss_96m_fck;
unsigned num_clks_enabled;
struct regulator *vdds_dsi_reg;
struct regulator *vdds_sdi_reg;
struct regulator *vdda_dac_reg;
} core;
static void dss_clk_enable_all_no_ctx(void);
static void dss_clk_disable_all_no_ctx(void);
static void dss_clk_enable_no_ctx(enum dss_clock clks);
static void dss_clk_disable_no_ctx(enum dss_clock clks);
static char *def_disp_name;
module_param_named(def_disp, def_disp_name, charp, 0);
MODULE_PARM_DESC(def_disp_name, "default display name");
......@@ -69,297 +55,6 @@ unsigned int dss_debug;
module_param_named(debug, dss_debug, bool, 0644);
#endif
/* CONTEXT */
static int dss_get_ctx_id(void)
{
struct omap_dss_board_info *pdata = core.pdev->dev.platform_data;
int r;
if (!pdata->get_last_off_on_transaction_id)
return 0;
r = pdata->get_last_off_on_transaction_id(&core.pdev->dev);
if (r < 0) {
dev_err(&core.pdev->dev, "getting transaction ID failed, "
"will force context restore\n");
r = -1;
}
return r;
}
int dss_need_ctx_restore(void)
{
int id = dss_get_ctx_id();
if (id < 0 || id != core.ctx_id) {
DSSDBG("ctx id %d -> id %d\n",
core.ctx_id, id);
core.ctx_id = id;
return 1;
} else {
return 0;
}
}
static void save_all_ctx(void)
{
DSSDBG("save context\n");
dss_clk_enable_no_ctx(DSS_CLK_ICK | DSS_CLK_FCK1);
dss_save_context();
dispc_save_context();
#ifdef CONFIG_OMAP2_DSS_DSI
dsi_save_context();
#endif
dss_clk_disable_no_ctx(DSS_CLK_ICK | DSS_CLK_FCK1);
}
static void restore_all_ctx(void)
{
DSSDBG("restore context\n");
dss_clk_enable_all_no_ctx();
dss_restore_context();
dispc_restore_context();
#ifdef CONFIG_OMAP2_DSS_DSI
dsi_restore_context();
#endif
dss_clk_disable_all_no_ctx();
}
#if defined(CONFIG_DEBUG_FS) && defined(CONFIG_OMAP2_DSS_DEBUG_SUPPORT)
/* CLOCKS */
static void core_dump_clocks(struct seq_file *s)
{
int i;
struct clk *clocks[5] = {
core.dss_ick,
core.dss1_fck,
core.dss2_fck,
core.dss_54m_fck,
core.dss_96m_fck
};
seq_printf(s, "- CORE -\n");
seq_printf(s, "internal clk count\t\t%u\n", core.num_clks_enabled);
for (i = 0; i < 5; i++) {
if (!clocks[i])
continue;
seq_printf(s, "%-15s\t%lu\t%d\n",
clocks[i]->name,
clk_get_rate(clocks[i]),
clocks[i]->usecount);
}
}
#endif /* defined(CONFIG_DEBUG_FS) && defined(CONFIG_OMAP2_DSS_DEBUG_SUPPORT) */
static int dss_get_clock(struct clk **clock, const char *clk_name)
{
struct clk *clk;
clk = clk_get(&core.pdev->dev, clk_name);
if (IS_ERR(clk)) {
DSSERR("can't get clock %s", clk_name);
return PTR_ERR(clk);
}
*clock = clk;
DSSDBG("clk %s, rate %ld\n", clk_name, clk_get_rate(clk));
return 0;
}
static int dss_get_clocks(void)
{
int r;
core.dss_ick = NULL;
core.dss1_fck = NULL;
core.dss2_fck = NULL;
core.dss_54m_fck = NULL;
core.dss_96m_fck = NULL;
r = dss_get_clock(&core.dss_ick, "ick");
if (r)
goto err;
r = dss_get_clock(&core.dss1_fck, "dss1_fck");
if (r)
goto err;
r = dss_get_clock(&core.dss2_fck, "dss2_fck");
if (r)
goto err;
r = dss_get_clock(&core.dss_54m_fck, "tv_fck");
if (r)
goto err;
r = dss_get_clock(&core.dss_96m_fck, "video_fck");
if (r)
goto err;
return 0;
err:
if (core.dss_ick)
clk_put(core.dss_ick);
if (core.dss1_fck)
clk_put(core.dss1_fck);
if (core.dss2_fck)
clk_put(core.dss2_fck);
if (core.dss_54m_fck)
clk_put(core.dss_54m_fck);
if (core.dss_96m_fck)
clk_put(core.dss_96m_fck);
return r;
}
static void dss_put_clocks(void)
{
if (core.dss_96m_fck)
clk_put(core.dss_96m_fck);
clk_put(core.dss_54m_fck);
clk_put(core.dss1_fck);
clk_put(core.dss2_fck);
clk_put(core.dss_ick);
}
unsigned long dss_clk_get_rate(enum dss_clock clk)
{
switch (clk) {
case DSS_CLK_ICK:
return clk_get_rate(core.dss_ick);
case DSS_CLK_FCK1:
return clk_get_rate(core.dss1_fck);
case DSS_CLK_FCK2:
return clk_get_rate(core.dss2_fck);
case DSS_CLK_54M:
return clk_get_rate(core.dss_54m_fck);
case DSS_CLK_96M:
return clk_get_rate(core.dss_96m_fck);
}
BUG();
return 0;
}
static unsigned count_clk_bits(enum dss_clock clks)
{
unsigned num_clks = 0;
if (clks & DSS_CLK_ICK)
++num_clks;
if (clks & DSS_CLK_FCK1)
++num_clks;
if (clks & DSS_CLK_FCK2)
++num_clks;
if (clks & DSS_CLK_54M)
++num_clks;
if (clks & DSS_CLK_96M)
++num_clks;
return num_clks;
}
static void dss_clk_enable_no_ctx(enum dss_clock clks)
{
unsigned num_clks = count_clk_bits(clks);
if (clks & DSS_CLK_ICK)
clk_enable(core.dss_ick);
if (clks & DSS_CLK_FCK1)
clk_enable(core.dss1_fck);
if (clks & DSS_CLK_FCK2)
clk_enable(core.dss2_fck);
if (clks & DSS_CLK_54M)
clk_enable(core.dss_54m_fck);
if (clks & DSS_CLK_96M)
clk_enable(core.dss_96m_fck);
core.num_clks_enabled += num_clks;
}
void dss_clk_enable(enum dss_clock clks)
{
bool check_ctx = core.num_clks_enabled == 0;
dss_clk_enable_no_ctx(clks);
if (check_ctx && cpu_is_omap34xx() && dss_need_ctx_restore())
restore_all_ctx();
}
static void dss_clk_disable_no_ctx(enum dss_clock clks)
{
unsigned num_clks = count_clk_bits(clks);
if (clks & DSS_CLK_ICK)
clk_disable(core.dss_ick);
if (clks & DSS_CLK_FCK1)
clk_disable(core.dss1_fck);
if (clks & DSS_CLK_FCK2)
clk_disable(core.dss2_fck);
if (clks & DSS_CLK_54M)
clk_disable(core.dss_54m_fck);
if (clks & DSS_CLK_96M)
clk_disable(core.dss_96m_fck);
core.num_clks_enabled -= num_clks;
}
void dss_clk_disable(enum dss_clock clks)
{
if (cpu_is_omap34xx()) {
unsigned num_clks = count_clk_bits(clks);
BUG_ON(core.num_clks_enabled < num_clks);
if (core.num_clks_enabled == num_clks)
save_all_ctx();
}
dss_clk_disable_no_ctx(clks);
}
static void dss_clk_enable_all_no_ctx(void)
{
enum dss_clock clks;
clks = DSS_CLK_ICK | DSS_CLK_FCK1 | DSS_CLK_FCK2 | DSS_CLK_54M;
if (cpu_is_omap34xx())
clks |= DSS_CLK_96M;
dss_clk_enable_no_ctx(clks);
}
static void dss_clk_disable_all_no_ctx(void)
{
enum dss_clock clks;
clks = DSS_CLK_ICK | DSS_CLK_FCK1 | DSS_CLK_FCK2 | DSS_CLK_54M;
if (cpu_is_omap34xx())
clks |= DSS_CLK_96M;
dss_clk_disable_no_ctx(clks);
}
static void dss_clk_disable_all(void)
{
enum dss_clock clks;
clks = DSS_CLK_ICK | DSS_CLK_FCK1 | DSS_CLK_FCK2 | DSS_CLK_54M;
if (cpu_is_omap34xx())
clks |= DSS_CLK_96M;
dss_clk_disable(clks);
}
/* REGULATORS */
struct regulator *dss_get_vdds_dsi(void)
......@@ -404,18 +99,7 @@ struct regulator *dss_get_vdda_dac(void)
return reg;
}
/* DEBUGFS */
#if defined(CONFIG_DEBUG_FS) && defined(CONFIG_OMAP2_DSS_DEBUG_SUPPORT)
static void dss_debug_dump_clocks(struct seq_file *s)
{
core_dump_clocks(s);
dss_dump_clocks(s);
dispc_dump_clocks(s);
#ifdef CONFIG_OMAP2_DSS_DSI
dsi_dump_clocks(s);
#endif
}
static int dss_debug_show(struct seq_file *s, void *unused)
{
void (*func)(struct seq_file *) = s->private;
......@@ -508,21 +192,15 @@ static int omap_dss_probe(struct platform_device *pdev)
dss_init_overlay_managers(pdev);
dss_init_overlays(pdev);
r = dss_get_clocks();
if (r)
goto err_clocks;
dss_clk_enable_all_no_ctx();
core.ctx_id = dss_get_ctx_id();
DSSDBG("initial ctx id %u\n", core.ctx_id);
r = dss_init_platform_driver();
if (r) {
DSSERR("Failed to initialize DSS platform driver\n");
goto err_dss;
}
/* keep clocks enabled to prevent context saves/restores during init */
dss_clk_enable(DSS_CLK_ICK | DSS_CLK_FCK1);
r = rfbi_init();
if (r) {
DSSERR("Failed to initialize rfbi\n");
......@@ -588,7 +266,7 @@ static int omap_dss_probe(struct platform_device *pdev)
pdata->default_device = dssdev;
}
dss_clk_disable_all();
dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK1);
return 0;
......@@ -611,9 +289,6 @@ static int omap_dss_probe(struct platform_device *pdev)
err_rfbi:
dss_uninit_platform_driver();
err_dss:
dss_clk_disable_all_no_ctx();
dss_put_clocks();
err_clocks:
return r;
}
......@@ -636,16 +311,6 @@ static int omap_dss_remove(struct platform_device *pdev)
dss_uninit_platform_driver();
/*
* As part of hwmod changes, DSS is not the only controller of dss
* clocks; hwmod framework itself will also enable clocks during hwmod
* init for dss, and autoidle is set in h/w for DSS. Hence, there's no
* need to disable clocks if their usecounts > 1.
*/
WARN_ON(core.num_clks_enabled > 0);
dss_put_clocks();
dss_uninit_overlays(pdev);
dss_uninit_overlay_managers(pdev);
......
drivers/video/omap2/dss/dss.c
浏览文件 @ 8b9cb3a8
......@@ -31,6 +31,7 @@
#include <linux/clk.h>
#include <plat/display.h>
#include <plat/clock.h>
#include "dss.h"
#define DSS_BASE 0x48050000
......@@ -61,8 +62,15 @@ struct dss_reg {
static struct {
struct platform_device *pdev;
void __iomem *base;
int ctx_id;
struct clk *dpll4_m4_ck;
struct clk *dss_ick;
struct clk *dss1_fck;
struct clk *dss2_fck;
struct clk *dss_54m_fck;
struct clk *dss_96m_fck;
unsigned num_clks_enabled;
unsigned long cache_req_pck;
unsigned long cache_prate;
......@@ -75,6 +83,11 @@ static struct {
u32 ctx[DSS_SZ_REGS / sizeof(u32)];
} dss;
static void dss_clk_enable_all_no_ctx(void);
static void dss_clk_disable_all_no_ctx(void);
static void dss_clk_enable_no_ctx(enum dss_clock clks);
static void dss_clk_disable_no_ctx(enum dss_clock clks);
static int _omap_dss_wait_reset(void);
static inline void dss_write_reg(const struct dss_reg idx, u32 val)
......@@ -640,6 +653,301 @@ static void dss_exit(void)
iounmap(dss.base);
}
/* CONTEXT */
static int dss_get_ctx_id(void)
{
struct omap_display_platform_data *pdata = dss.pdev->dev.platform_data;
int r;
if (!pdata->board_data->get_last_off_on_transaction_id)
return 0;
r = pdata->board_data->get_last_off_on_transaction_id(&dss.pdev->dev);
if (r < 0) {
dev_err(&dss.pdev->dev, "getting transaction ID failed, "
"will force context restore\n");
r = -1;
}
return r;
}
int dss_need_ctx_restore(void)
{
int id = dss_get_ctx_id();
if (id < 0 || id != dss.ctx_id) {
DSSDBG("ctx id %d -> id %d\n",
dss.ctx_id, id);
dss.ctx_id = id;
return 1;
} else {
return 0;
}
}
static void save_all_ctx(void)
{
DSSDBG("save context\n");
dss_clk_enable_no_ctx(DSS_CLK_ICK | DSS_CLK_FCK1);
dss_save_context();
dispc_save_context();
#ifdef CONFIG_OMAP2_DSS_DSI
dsi_save_context();
#endif
dss_clk_disable_no_ctx(DSS_CLK_ICK | DSS_CLK_FCK1);
}
static void restore_all_ctx(void)
{
DSSDBG("restore context\n");
dss_clk_enable_all_no_ctx();
dss_restore_context();
dispc_restore_context();
#ifdef CONFIG_OMAP2_DSS_DSI
dsi_restore_context();
#endif
dss_clk_disable_all_no_ctx();
}
static int dss_get_clock(struct clk **clock, const char *clk_name)
{
struct clk *clk;
clk = clk_get(&dss.pdev->dev, clk_name);
if (IS_ERR(clk)) {
DSSERR("can't get clock %s", clk_name);
return PTR_ERR(clk);
}
*clock = clk;
DSSDBG("clk %s, rate %ld\n", clk_name, clk_get_rate(clk));
return 0;
}
static int dss_get_clocks(void)
{
int r;
dss.dss_ick = NULL;
dss.dss1_fck = NULL;
dss.dss2_fck = NULL;
dss.dss_54m_fck = NULL;
dss.dss_96m_fck = NULL;
r = dss_get_clock(&dss.dss_ick, "ick");
if (r)
goto err;
r = dss_get_clock(&dss.dss1_fck, "dss1_fck");
if (r)
goto err;
r = dss_get_clock(&dss.dss2_fck, "dss2_fck");
if (r)
goto err;
r = dss_get_clock(&dss.dss_54m_fck, "tv_fck");
if (r)
goto err;
r = dss_get_clock(&dss.dss_96m_fck, "video_fck");
if (r)
goto err;
return 0;
err:
if (dss.dss_ick)
clk_put(dss.dss_ick);
if (dss.dss1_fck)
clk_put(dss.dss1_fck);
if (dss.dss2_fck)
clk_put(dss.dss2_fck);
if (dss.dss_54m_fck)
clk_put(dss.dss_54m_fck);
if (dss.dss_96m_fck)
clk_put(dss.dss_96m_fck);
return r;
}
static void dss_put_clocks(void)
{
if (dss.dss_96m_fck)
clk_put(dss.dss_96m_fck);
clk_put(dss.dss_54m_fck);
clk_put(dss.dss1_fck);
clk_put(dss.dss2_fck);
clk_put(dss.dss_ick);
}
unsigned long dss_clk_get_rate(enum dss_clock clk)
{
switch (clk) {
case DSS_CLK_ICK:
return clk_get_rate(dss.dss_ick);
case DSS_CLK_FCK1:
return clk_get_rate(dss.dss1_fck);
case DSS_CLK_FCK2:
return clk_get_rate(dss.dss2_fck);
case DSS_CLK_54M:
return clk_get_rate(dss.dss_54m_fck);
case DSS_CLK_96M:
return clk_get_rate(dss.dss_96m_fck);
}
BUG();
return 0;
}
static unsigned count_clk_bits(enum dss_clock clks)
{
unsigned num_clks = 0;
if (clks & DSS_CLK_ICK)
++num_clks;
if (clks & DSS_CLK_FCK1)
++num_clks;
if (clks & DSS_CLK_FCK2)
++num_clks;
if (clks & DSS_CLK_54M)
++num_clks;
if (clks & DSS_CLK_96M)
++num_clks;
return num_clks;
}
static void dss_clk_enable_no_ctx(enum dss_clock clks)
{
unsigned num_clks = count_clk_bits(clks);
if (clks & DSS_CLK_ICK)
clk_enable(dss.dss_ick);
if (clks & DSS_CLK_FCK1)
clk_enable(dss.dss1_fck);
if (clks & DSS_CLK_FCK2)
clk_enable(dss.dss2_fck);
if (clks & DSS_CLK_54M)
clk_enable(dss.dss_54m_fck);
if (clks & DSS_CLK_96M)
clk_enable(dss.dss_96m_fck);
dss.num_clks_enabled += num_clks;
}
void dss_clk_enable(enum dss_clock clks)
{
bool check_ctx = dss.num_clks_enabled == 0;
dss_clk_enable_no_ctx(clks);
if (check_ctx && cpu_is_omap34xx() && dss_need_ctx_restore())
restore_all_ctx();
}
static void dss_clk_disable_no_ctx(enum dss_clock clks)
{
unsigned num_clks = count_clk_bits(clks);
if (clks & DSS_CLK_ICK)
clk_disable(dss.dss_ick);
if (clks & DSS_CLK_FCK1)
clk_disable(dss.dss1_fck);
if (clks & DSS_CLK_FCK2)
clk_disable(dss.dss2_fck);
if (clks & DSS_CLK_54M)
clk_disable(dss.dss_54m_fck);
if (clks & DSS_CLK_96M)
clk_disable(dss.dss_96m_fck);
dss.num_clks_enabled -= num_clks;
}
void dss_clk_disable(enum dss_clock clks)
{
if (cpu_is_omap34xx()) {
unsigned num_clks = count_clk_bits(clks);
BUG_ON(dss.num_clks_enabled < num_clks);
if (dss.num_clks_enabled == num_clks)
save_all_ctx();
}
dss_clk_disable_no_ctx(clks);
}
static void dss_clk_enable_all_no_ctx(void)
{
enum dss_clock clks;
clks = DSS_CLK_ICK | DSS_CLK_FCK1 | DSS_CLK_FCK2 | DSS_CLK_54M;
if (cpu_is_omap34xx())
clks |= DSS_CLK_96M;
dss_clk_enable_no_ctx(clks);
}
static void dss_clk_disable_all_no_ctx(void)
{
enum dss_clock clks;
clks = DSS_CLK_ICK | DSS_CLK_FCK1 | DSS_CLK_FCK2 | DSS_CLK_54M;
if (cpu_is_omap34xx())
clks |= DSS_CLK_96M;
dss_clk_disable_no_ctx(clks);
}
#if defined(CONFIG_DEBUG_FS) && defined(CONFIG_OMAP2_DSS_DEBUG_SUPPORT)
/* CLOCKS */
static void core_dump_clocks(struct seq_file *s)
{
int i;
struct clk *clocks[5] = {
dss.dss_ick,
dss.dss1_fck,
dss.dss2_fck,
dss.dss_54m_fck,
dss.dss_96m_fck
};
seq_printf(s, "- CORE -\n");
seq_printf(s, "internal clk count\t\t%u\n", dss.num_clks_enabled);
for (i = 0; i < 5; i++) {
if (!clocks[i])
continue;
seq_printf(s, "%-15s\t%lu\t%d\n",
clocks[i]->name,
clk_get_rate(clocks[i]),
clocks[i]->usecount);
}
}
#endif /* defined(CONFIG_DEBUG_FS) && defined(CONFIG_OMAP2_DSS_DEBUG_SUPPORT) */
/* DEBUGFS */
#if defined(CONFIG_DEBUG_FS) && defined(CONFIG_OMAP2_DSS_DEBUG_SUPPORT)
void dss_debug_dump_clocks(struct seq_file *s)
{
core_dump_clocks(s);
dss_dump_clocks(s);
dispc_dump_clocks(s);
#ifdef CONFIG_OMAP2_DSS_DSI
dsi_dump_clocks(s);
#endif
}
#endif
/* DSS HW IP initialisation */
static int omap_dsshw_probe(struct platform_device *pdev)
{
......@@ -648,6 +956,15 @@ static int omap_dsshw_probe(struct platform_device *pdev)
dss.pdev = pdev;
r = dss_get_clocks();
if (r)
goto err_clocks;
dss_clk_enable_all_no_ctx();
dss.ctx_id = dss_get_ctx_id();
DSSDBG("initial ctx id %u\n", dss.ctx_id);
#ifdef CONFIG_FB_OMAP_BOOTLOADER_INIT
/* DISPC_CONTROL */
if (omap_readl(0x48050440) & 1) /* LCD enabled? */
......@@ -660,15 +977,30 @@ static int omap_dsshw_probe(struct platform_device *pdev)
goto err_dss;
}
err_dss:
dss_clk_disable_all_no_ctx();
return 0;
err_dss:
dss_clk_disable_all_no_ctx();
dss_put_clocks();
err_clocks:
return r;
}
static int omap_dsshw_remove(struct platform_device *pdev)
{
dss_exit();
/*
* As part of hwmod changes, DSS is not the only controller of dss
* clocks; hwmod framework itself will also enable clocks during hwmod
* init for dss, and autoidle is set in h/w for DSS. Hence, there's no
* need to disable clocks if their usecounts > 1.
*/
WARN_ON(dss.num_clks_enabled > 0);
dss_put_clocks();
return 0;
}
......
drivers/video/omap2/dss/dss.h
浏览文件 @ 8b9cb3a8
......@@ -169,11 +169,6 @@ struct seq_file;
struct platform_device;
/* core */
void dss_clk_enable(enum dss_clock clks);
void dss_clk_disable(enum dss_clock clks);
unsigned long dss_clk_get_rate(enum dss_clock clk);
int dss_need_ctx_restore(void);
void dss_dump_clocks(struct seq_file *s);
struct bus_type *dss_get_bus(void);
struct regulator *dss_get_vdds_dsi(void);
struct regulator *dss_get_vdds_sdi(void);
......@@ -219,8 +214,16 @@ void dss_uninit_platform_driver(void);
void dss_save_context(void);
void dss_restore_context(void);
void dss_clk_enable(enum dss_clock clks);
void dss_clk_disable(enum dss_clock clks);
unsigned long dss_clk_get_rate(enum dss_clock clk);
int dss_need_ctx_restore(void);
void dss_dump_clocks(struct seq_file *s);
void dss_dump_regs(struct seq_file *s);
#if defined(CONFIG_DEBUG_FS) && defined(CONFIG_OMAP2_DSS_DEBUG_SUPPORT)
void dss_debug_dump_clocks(struct seq_file *s);
#endif
void dss_sdi_init(u8 datapairs);
int dss_sdi_enable(void);
......
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