summaryrefslogtreecommitdiff
path: root/drivers/video/fbdev/omap2/dss/video-pll.c
diff options
context:
space:
mode:
authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-03-25 03:53:42 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-03-25 03:53:42 -0300
commit03dd4cb26d967f9588437b0fc9cc0e8353322bb7 (patch)
treefa581f6dc1c0596391690d1f67eceef3af8246dc /drivers/video/fbdev/omap2/dss/video-pll.c
parentd4e493caf788ef44982e131ff9c786546904d934 (diff)
Linux-libre 4.5-gnu
Diffstat (limited to 'drivers/video/fbdev/omap2/dss/video-pll.c')
-rw-r--r--drivers/video/fbdev/omap2/dss/video-pll.c211
1 files changed, 0 insertions, 211 deletions
diff --git a/drivers/video/fbdev/omap2/dss/video-pll.c b/drivers/video/fbdev/omap2/dss/video-pll.c
deleted file mode 100644
index b1ec59e42..000000000
--- a/drivers/video/fbdev/omap2/dss/video-pll.c
+++ /dev/null
@@ -1,211 +0,0 @@
-/*
-* Copyright (C) 2014 Texas Instruments Ltd
-*
-* This program is free software; you can redistribute it and/or modify it
-* under the terms of the GNU General Public License version 2 as published by
-* the Free Software Foundation.
-*
-* You should have received a copy of the GNU General Public License along with
-* this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#include <linux/clk.h>
-#include <linux/delay.h>
-#include <linux/err.h>
-#include <linux/io.h>
-#include <linux/kernel.h>
-#include <linux/platform_device.h>
-#include <linux/sched.h>
-
-#include <video/omapdss.h>
-
-#include "dss.h"
-#include "dss_features.h"
-
-struct dss_video_pll {
- struct dss_pll pll;
-
- struct device *dev;
-
- void __iomem *clkctrl_base;
-};
-
-#define REG_MOD(reg, val, start, end) \
- writel_relaxed(FLD_MOD(readl_relaxed(reg), val, start, end), reg)
-
-static void dss_dpll_enable_scp_clk(struct dss_video_pll *vpll)
-{
- REG_MOD(vpll->clkctrl_base, 1, 14, 14); /* CIO_CLK_ICG */
-}
-
-static void dss_dpll_disable_scp_clk(struct dss_video_pll *vpll)
-{
- REG_MOD(vpll->clkctrl_base, 0, 14, 14); /* CIO_CLK_ICG */
-}
-
-static void dss_dpll_power_enable(struct dss_video_pll *vpll)
-{
- REG_MOD(vpll->clkctrl_base, 2, 31, 30); /* PLL_POWER_ON_ALL */
-
- /*
- * DRA7x PLL CTRL's PLL_PWR_STATUS seems to always return 0,
- * so we have to use fixed delay here.
- */
- msleep(1);
-}
-
-static void dss_dpll_power_disable(struct dss_video_pll *vpll)
-{
- REG_MOD(vpll->clkctrl_base, 0, 31, 30); /* PLL_POWER_OFF */
-}
-
-static int dss_video_pll_enable(struct dss_pll *pll)
-{
- struct dss_video_pll *vpll = container_of(pll, struct dss_video_pll, pll);
- int r;
-
- r = dss_runtime_get();
- if (r)
- return r;
-
- dss_ctrl_pll_enable(pll->id, true);
-
- dss_dpll_enable_scp_clk(vpll);
-
- r = dss_pll_wait_reset_done(pll);
- if (r)
- goto err_reset;
-
- dss_dpll_power_enable(vpll);
-
- return 0;
-
-err_reset:
- dss_dpll_disable_scp_clk(vpll);
- dss_ctrl_pll_enable(pll->id, false);
- dss_runtime_put();
-
- return r;
-}
-
-static void dss_video_pll_disable(struct dss_pll *pll)
-{
- struct dss_video_pll *vpll = container_of(pll, struct dss_video_pll, pll);
-
- dss_dpll_power_disable(vpll);
-
- dss_dpll_disable_scp_clk(vpll);
-
- dss_ctrl_pll_enable(pll->id, false);
-
- dss_runtime_put();
-}
-
-static const struct dss_pll_ops dss_pll_ops = {
- .enable = dss_video_pll_enable,
- .disable = dss_video_pll_disable,
- .set_config = dss_pll_write_config_type_a,
-};
-
-static const struct dss_pll_hw dss_dra7_video_pll_hw = {
- .n_max = (1 << 8) - 1,
- .m_max = (1 << 12) - 1,
- .mX_max = (1 << 5) - 1,
- .fint_min = 500000,
- .fint_max = 2500000,
- .clkdco_max = 1800000000,
-
- .n_msb = 8,
- .n_lsb = 1,
- .m_msb = 20,
- .m_lsb = 9,
-
- .mX_msb[0] = 25,
- .mX_lsb[0] = 21,
- .mX_msb[1] = 30,
- .mX_lsb[1] = 26,
-
- .has_refsel = true,
-};
-
-struct dss_pll *dss_video_pll_init(struct platform_device *pdev, int id,
- struct regulator *regulator)
-{
- const char * const reg_name[] = { "pll1", "pll2" };
- const char * const clkctrl_name[] = { "pll1_clkctrl", "pll2_clkctrl" };
- const char * const clkin_name[] = { "video1_clk", "video2_clk" };
-
- struct resource *res;
- struct dss_video_pll *vpll;
- void __iomem *pll_base, *clkctrl_base;
- struct clk *clk;
- struct dss_pll *pll;
- int r;
-
- /* PLL CONTROL */
-
- res = platform_get_resource_byname(pdev, IORESOURCE_MEM, reg_name[id]);
- if (!res) {
- dev_err(&pdev->dev,
- "missing platform resource data for pll%d\n", id);
- return ERR_PTR(-ENODEV);
- }
-
- pll_base = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(pll_base)) {
- dev_err(&pdev->dev, "failed to ioremap pll%d reg_name\n", id);
- return ERR_CAST(pll_base);
- }
-
- /* CLOCK CONTROL */
-
- res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
- clkctrl_name[id]);
- if (!res) {
- dev_err(&pdev->dev,
- "missing platform resource data for pll%d\n", id);
- return ERR_PTR(-ENODEV);
- }
-
- clkctrl_base = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(clkctrl_base)) {
- dev_err(&pdev->dev, "failed to ioremap pll%d clkctrl\n", id);
- return ERR_CAST(clkctrl_base);
- }
-
- /* CLKIN */
-
- clk = devm_clk_get(&pdev->dev, clkin_name[id]);
- if (IS_ERR(clk)) {
- DSSERR("can't get video pll clkin\n");
- return ERR_CAST(clk);
- }
-
- vpll = devm_kzalloc(&pdev->dev, sizeof(*vpll), GFP_KERNEL);
- if (!vpll)
- return ERR_PTR(-ENOMEM);
-
- vpll->dev = &pdev->dev;
- vpll->clkctrl_base = clkctrl_base;
-
- pll = &vpll->pll;
-
- pll->name = id == 0 ? "video0" : "video1";
- pll->id = id == 0 ? DSS_PLL_VIDEO1 : DSS_PLL_VIDEO2;
- pll->clkin = clk;
- pll->regulator = regulator;
- pll->base = pll_base;
- pll->hw = &dss_dra7_video_pll_hw;
- pll->ops = &dss_pll_ops;
-
- r = dss_pll_register(pll);
- if (r)
- return ERR_PTR(r);
-
- return pll;
-}
-
-void dss_video_pll_uninit(struct dss_pll *pll)
-{
- dss_pll_unregister(pll);
-}