mirror of https://gitee.com/openkylin/linux.git
drm: omapdrm: sdi: Allocate the sdi private data structure dynamically
The sdi private data structure is currently stored as a global variable. While no platform with multiple SDI encoders currently exists nor is planned, this doesn't comply with the kernel device model and should thus be fixed. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
This commit is contained in:
Laurent Pinchart
Tomi Valkeinen
parent
c44991ce21
commit
24aac6011f
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@ -29,7 +29,7 @@
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#include "omapdss.h"
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#include "dss.h"
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static struct {
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struct sdi_device {
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struct platform_device *pdev;
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struct dss_device *dss;
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@ -41,11 +41,12 @@ static struct {
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int datapairs;
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struct omap_dss_device output;
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};
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bool port_initialized;
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} sdi;
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#define dssdev_to_sdi(dssdev) container_of(dssdev, struct sdi_device, output)
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struct sdi_clk_calc_ctx {
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struct sdi_device *sdi;
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unsigned long pck_min, pck_max;
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unsigned long fck;
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@ -71,17 +72,17 @@ static bool dpi_calc_dss_cb(unsigned long fck, void *data)
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ctx->fck = fck;
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return dispc_div_calc(sdi.dss->dispc, fck,
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return dispc_div_calc(ctx->sdi->dss->dispc, fck,
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ctx->pck_min, ctx->pck_max,
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dpi_calc_dispc_cb, ctx);
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}
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static int sdi_calc_clock_div(unsigned long pclk,
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unsigned long *fck,
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struct dispc_clock_info *dispc_cinfo)
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static int sdi_calc_clock_div(struct sdi_device *sdi, unsigned long pclk,
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unsigned long *fck,
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struct dispc_clock_info *dispc_cinfo)
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{
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int i;
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struct sdi_clk_calc_ctx ctx;
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struct sdi_clk_calc_ctx ctx = { .sdi = sdi };
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/*
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* DSS fclk gives us very few possibilities, so finding a good pixel
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@ -100,7 +101,7 @@ static int sdi_calc_clock_div(unsigned long pclk,
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ctx.pck_min = 0;
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ctx.pck_max = pclk + 1000 * i * i * i;
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ok = dss_div_calc(sdi.dss, pclk, ctx.pck_min,
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ok = dss_div_calc(sdi->dss, pclk, ctx.pck_min,
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dpi_calc_dss_cb, &ctx);
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if (ok) {
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*fck = ctx.fck;
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@ -112,48 +113,49 @@ static int sdi_calc_clock_div(unsigned long pclk,
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return -EINVAL;
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}
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static void sdi_config_lcd_manager(struct omap_dss_device *dssdev)
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static void sdi_config_lcd_manager(struct sdi_device *sdi)
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{
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sdi.mgr_config.io_pad_mode = DSS_IO_PAD_MODE_BYPASS;
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sdi->mgr_config.io_pad_mode = DSS_IO_PAD_MODE_BYPASS;
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sdi.mgr_config.stallmode = false;
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sdi.mgr_config.fifohandcheck = false;
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sdi->mgr_config.stallmode = false;
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sdi->mgr_config.fifohandcheck = false;
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sdi.mgr_config.video_port_width = 24;
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sdi.mgr_config.lcden_sig_polarity = 1;
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sdi->mgr_config.video_port_width = 24;
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sdi->mgr_config.lcden_sig_polarity = 1;
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dss_mgr_set_lcd_config(&sdi.output, &sdi.mgr_config);
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dss_mgr_set_lcd_config(&sdi->output, &sdi->mgr_config);
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}
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static int sdi_display_enable(struct omap_dss_device *dssdev)
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{
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struct videomode *vm = &sdi.vm;
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struct sdi_device *sdi = dssdev_to_sdi(dssdev);
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struct videomode *vm = &sdi->vm;
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unsigned long fck;
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struct dispc_clock_info dispc_cinfo;
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unsigned long pck;
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int r;
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if (!sdi.output.dispc_channel_connected) {
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if (!sdi->output.dispc_channel_connected) {
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DSSERR("failed to enable display: no output/manager\n");
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return -ENODEV;
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}
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r = regulator_enable(sdi.vdds_sdi_reg);
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r = regulator_enable(sdi->vdds_sdi_reg);
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if (r)
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goto err_reg_enable;
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r = dispc_runtime_get(sdi.dss->dispc);
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r = dispc_runtime_get(sdi->dss->dispc);
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if (r)
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goto err_get_dispc;
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/* 15.5.9.1.2 */
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vm->flags |= DISPLAY_FLAGS_PIXDATA_POSEDGE | DISPLAY_FLAGS_SYNC_POSEDGE;
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r = sdi_calc_clock_div(vm->pixelclock, &fck, &dispc_cinfo);
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r = sdi_calc_clock_div(sdi, vm->pixelclock, &fck, &dispc_cinfo);
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if (r)
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goto err_calc_clock_div;
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sdi.mgr_config.clock_info = dispc_cinfo;
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sdi->mgr_config.clock_info = dispc_cinfo;
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pck = fck / dispc_cinfo.lck_div / dispc_cinfo.pck_div;
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@ -165,13 +167,13 @@ static int sdi_display_enable(struct omap_dss_device *dssdev)
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}
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dss_mgr_set_timings(&sdi.output, vm);
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dss_mgr_set_timings(&sdi->output, vm);
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r = dss_set_fck_rate(sdi.dss, fck);
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r = dss_set_fck_rate(sdi->dss, fck);
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if (r)
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goto err_set_dss_clock_div;
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sdi_config_lcd_manager(dssdev);
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sdi_config_lcd_manager(sdi);
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/*
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* LCLK and PCLK divisors are located in shadow registers, and we
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@ -184,62 +186,69 @@ static int sdi_display_enable(struct omap_dss_device *dssdev)
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* need to care about the shadow register mechanism for pck-free. The
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* exact reason for this is unknown.
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*/
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dispc_mgr_set_clock_div(sdi.dss->dispc, sdi.output.dispc_channel,
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&sdi.mgr_config.clock_info);
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dispc_mgr_set_clock_div(sdi->dss->dispc, sdi->output.dispc_channel,
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&sdi->mgr_config.clock_info);
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dss_sdi_init(sdi.dss, sdi.datapairs);
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r = dss_sdi_enable(sdi.dss);
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dss_sdi_init(sdi->dss, sdi->datapairs);
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r = dss_sdi_enable(sdi->dss);
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if (r)
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goto err_sdi_enable;
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mdelay(2);
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r = dss_mgr_enable(&sdi.output);
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r = dss_mgr_enable(&sdi->output);
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if (r)
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goto err_mgr_enable;
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return 0;
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err_mgr_enable:
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dss_sdi_disable(sdi.dss);
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dss_sdi_disable(sdi->dss);
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err_sdi_enable:
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err_set_dss_clock_div:
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err_calc_clock_div:
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dispc_runtime_put(sdi.dss->dispc);
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dispc_runtime_put(sdi->dss->dispc);
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err_get_dispc:
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regulator_disable(sdi.vdds_sdi_reg);
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regulator_disable(sdi->vdds_sdi_reg);
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err_reg_enable:
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return r;
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}
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static void sdi_display_disable(struct omap_dss_device *dssdev)
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{
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dss_mgr_disable(&sdi.output);
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struct sdi_device *sdi = dssdev_to_sdi(dssdev);
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dss_sdi_disable(sdi.dss);
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dss_mgr_disable(&sdi->output);
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dispc_runtime_put(sdi.dss->dispc);
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dss_sdi_disable(sdi->dss);
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regulator_disable(sdi.vdds_sdi_reg);
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dispc_runtime_put(sdi->dss->dispc);
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regulator_disable(sdi->vdds_sdi_reg);
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}
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static void sdi_set_timings(struct omap_dss_device *dssdev,
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struct videomode *vm)
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{
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sdi.vm = *vm;
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struct sdi_device *sdi = dssdev_to_sdi(dssdev);
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sdi->vm = *vm;
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}
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static void sdi_get_timings(struct omap_dss_device *dssdev,
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struct videomode *vm)
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{
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*vm = sdi.vm;
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struct sdi_device *sdi = dssdev_to_sdi(dssdev);
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*vm = sdi->vm;
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}
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static int sdi_check_timings(struct omap_dss_device *dssdev,
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struct videomode *vm)
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{
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struct sdi_device *sdi = dssdev_to_sdi(dssdev);
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enum omap_channel channel = dssdev->dispc_channel;
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if (!dispc_mgr_timings_ok(sdi.dss->dispc, channel, vm))
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if (!dispc_mgr_timings_ok(sdi->dss->dispc, channel, vm))
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return -EINVAL;
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if (vm->pixelclock == 0)
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@ -248,21 +257,21 @@ static int sdi_check_timings(struct omap_dss_device *dssdev,
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return 0;
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}
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static int sdi_init_regulator(void)
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static int sdi_init_regulator(struct sdi_device *sdi)
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{
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struct regulator *vdds_sdi;
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if (sdi.vdds_sdi_reg)
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if (sdi->vdds_sdi_reg)
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return 0;
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vdds_sdi = devm_regulator_get(&sdi.pdev->dev, "vdds_sdi");
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vdds_sdi = devm_regulator_get(&sdi->pdev->dev, "vdds_sdi");
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if (IS_ERR(vdds_sdi)) {
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if (PTR_ERR(vdds_sdi) != -EPROBE_DEFER)
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DSSERR("can't get VDDS_SDI regulator\n");
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return PTR_ERR(vdds_sdi);
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}
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sdi.vdds_sdi_reg = vdds_sdi;
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sdi->vdds_sdi_reg = vdds_sdi;
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return 0;
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}
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@ -270,13 +279,14 @@ static int sdi_init_regulator(void)
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static int sdi_connect(struct omap_dss_device *dssdev,
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struct omap_dss_device *dst)
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{
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struct sdi_device *sdi = dssdev_to_sdi(dssdev);
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int r;
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r = sdi_init_regulator();
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r = sdi_init_regulator(sdi);
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if (r)
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return r;
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r = dss_mgr_connect(&sdi.output, dssdev);
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r = dss_mgr_connect(&sdi->output, dssdev);
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if (r)
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return r;
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@ -284,7 +294,7 @@ static int sdi_connect(struct omap_dss_device *dssdev,
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if (r) {
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DSSERR("failed to connect output to new device: %s\n",
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dst->name);
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dss_mgr_disconnect(&sdi.output, dssdev);
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dss_mgr_disconnect(&sdi->output, dssdev);
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return r;
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}
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@ -294,6 +304,8 @@ static int sdi_connect(struct omap_dss_device *dssdev,
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static void sdi_disconnect(struct omap_dss_device *dssdev,
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struct omap_dss_device *dst)
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{
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struct sdi_device *sdi = dssdev_to_sdi(dssdev);
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WARN_ON(dst != dssdev->dst);
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if (dst != dssdev->dst)
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@ -301,7 +313,7 @@ static void sdi_disconnect(struct omap_dss_device *dssdev,
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omapdss_output_unset_device(dssdev);
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dss_mgr_disconnect(&sdi.output, dssdev);
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dss_mgr_disconnect(&sdi->output, dssdev);
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}
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static const struct omapdss_sdi_ops sdi_ops = {
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@ -316,11 +328,11 @@ static const struct omapdss_sdi_ops sdi_ops = {
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.get_timings = sdi_get_timings,
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};
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static void sdi_init_output(struct platform_device *pdev)
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static void sdi_init_output(struct sdi_device *sdi)
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{
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struct omap_dss_device *out = &sdi.output;
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struct omap_dss_device *out = &sdi->output;
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out->dev = &pdev->dev;
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out->dev = &sdi->pdev->dev;
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out->id = OMAP_DSS_OUTPUT_SDI;
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out->output_type = OMAP_DISPLAY_TYPE_SDI;
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out->name = "sdi.0";
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@ -333,23 +345,28 @@ static void sdi_init_output(struct platform_device *pdev)
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omapdss_register_output(out);
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}
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static void sdi_uninit_output(struct platform_device *pdev)
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static void sdi_uninit_output(struct sdi_device *sdi)
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{
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struct omap_dss_device *out = &sdi.output;
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omapdss_unregister_output(out);
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omapdss_unregister_output(&sdi->output);
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}
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int sdi_init_port(struct dss_device *dss, struct platform_device *pdev,
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struct device_node *port)
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{
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struct sdi_device *sdi;
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struct device_node *ep;
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u32 datapairs;
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int r;
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sdi = kzalloc(sizeof(*sdi), GFP_KERNEL);
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if (!sdi)
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return -ENOMEM;
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ep = of_get_next_child(port, NULL);
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if (!ep)
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return 0;
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if (!ep) {
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r = 0;
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goto err_free;
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}
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r = of_property_read_u32(ep, "datapairs", &datapairs);
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if (r) {
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@ -357,29 +374,33 @@ int sdi_init_port(struct dss_device *dss, struct platform_device *pdev,
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goto err_datapairs;
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}
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sdi.datapairs = datapairs;
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sdi.dss = dss;
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sdi->datapairs = datapairs;
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sdi->dss = dss;
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of_node_put(ep);
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sdi.pdev = pdev;
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sdi->pdev = pdev;
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port->data = sdi;
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sdi_init_output(pdev);
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sdi.port_initialized = true;
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sdi_init_output(sdi);
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return 0;
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err_datapairs:
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of_node_put(ep);
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err_free:
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kfree(sdi);
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return r;
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}
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void sdi_uninit_port(struct device_node *port)
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{
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if (!sdi.port_initialized)
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struct sdi_device *sdi = port->data;
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if (!sdi)
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return;
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sdi_uninit_output(sdi.pdev);
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sdi_uninit_output(sdi);
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kfree(sdi);
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}
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