-/* 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);
-}
-