--- /dev/null
+/*
+ * isph3a_af.c
+ *
+ * TI OMAP3 ISP - H3A AF module
+ *
+ * Copyright (C) 2010 Nokia Corporation
+ * Copyright (C) 2009 Texas Instruments, Inc.
+ *
+ * Contacts: David Cohen <dacohen@gmail.com>
+ * Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+ * Sakari Ailus <sakari.ailus@iki.fi>
+ *
+ * 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.
+ */
+
+/* Linux specific include files */
+#include <linux/device.h>
+#include <linux/slab.h>
+
+#include "isp.h"
+#include "isph3a.h"
+#include "ispstat.h"
+
+#define IS_OUT_OF_BOUNDS(value, min, max) \
+ (((value) < (min)) || ((value) > (max)))
+
+static void h3a_af_setup_regs(struct ispstat *af, void *priv)
+{
+ struct omap3isp_h3a_af_config *conf = priv;
+ u32 pcr;
+ u32 pax1;
+ u32 pax2;
+ u32 paxstart;
+ u32 coef;
+ u32 base_coef_set0;
+ u32 base_coef_set1;
+ int index;
+
+ if (af->state == ISPSTAT_DISABLED)
+ return;
+
+ isp_reg_writel(af->isp, af->active_buf->dma_addr, OMAP3_ISP_IOMEM_H3A,
+ ISPH3A_AFBUFST);
+
+ if (!af->update)
+ return;
+
+ /* Configure Hardware Registers */
+ pax1 = ((conf->paxel.width >> 1) - 1) << AF_PAXW_SHIFT;
+ /* Set height in AFPAX1 */
+ pax1 |= (conf->paxel.height >> 1) - 1;
+ isp_reg_writel(af->isp, pax1, OMAP3_ISP_IOMEM_H3A, ISPH3A_AFPAX1);
+
+ /* Configure AFPAX2 Register */
+ /* Set Line Increment in AFPAX2 Register */
+ pax2 = ((conf->paxel.line_inc >> 1) - 1) << AF_LINE_INCR_SHIFT;
+ /* Set Vertical Count */
+ pax2 |= (conf->paxel.v_cnt - 1) << AF_VT_COUNT_SHIFT;
+ /* Set Horizontal Count */
+ pax2 |= (conf->paxel.h_cnt - 1);
+ isp_reg_writel(af->isp, pax2, OMAP3_ISP_IOMEM_H3A, ISPH3A_AFPAX2);
+
+ /* Configure PAXSTART Register */
+ /*Configure Horizontal Start */
+ paxstart = conf->paxel.h_start << AF_HZ_START_SHIFT;
+ /* Configure Vertical Start */
+ paxstart |= conf->paxel.v_start;
+ isp_reg_writel(af->isp, paxstart, OMAP3_ISP_IOMEM_H3A,
+ ISPH3A_AFPAXSTART);
+
+ /*SetIIRSH Register */
+ isp_reg_writel(af->isp, conf->iir.h_start,
+ OMAP3_ISP_IOMEM_H3A, ISPH3A_AFIIRSH);
+
+ base_coef_set0 = ISPH3A_AFCOEF010;
+ base_coef_set1 = ISPH3A_AFCOEF110;
+ for (index = 0; index <= 8; index += 2) {
+ /*Set IIR Filter0 Coefficients */
+ coef = 0;
+ coef |= conf->iir.coeff_set0[index];
+ coef |= conf->iir.coeff_set0[index + 1] <<
+ AF_COEF_SHIFT;
+ isp_reg_writel(af->isp, coef, OMAP3_ISP_IOMEM_H3A,
+ base_coef_set0);
+ base_coef_set0 += AFCOEF_OFFSET;
+
+ /*Set IIR Filter1 Coefficients */
+ coef = 0;
+ coef |= conf->iir.coeff_set1[index];
+ coef |= conf->iir.coeff_set1[index + 1] <<
+ AF_COEF_SHIFT;
+ isp_reg_writel(af->isp, coef, OMAP3_ISP_IOMEM_H3A,
+ base_coef_set1);
+ base_coef_set1 += AFCOEF_OFFSET;
+ }
+ /* set AFCOEF0010 Register */
+ isp_reg_writel(af->isp, conf->iir.coeff_set0[10],
+ OMAP3_ISP_IOMEM_H3A, ISPH3A_AFCOEF0010);
+ /* set AFCOEF1010 Register */
+ isp_reg_writel(af->isp, conf->iir.coeff_set1[10],
+ OMAP3_ISP_IOMEM_H3A, ISPH3A_AFCOEF1010);
+
+ /* PCR Register */
+ /* Set RGB Position */
+ pcr = conf->rgb_pos << AF_RGBPOS_SHIFT;
+ /* Set Accumulator Mode */
+ if (conf->fvmode == OMAP3ISP_AF_MODE_PEAK)
+ pcr |= AF_FVMODE;
+ /* Set A-law */
+ if (conf->alaw_enable)
+ pcr |= AF_ALAW_EN;
+ /* HMF Configurations */
+ if (conf->hmf.enable) {
+ /* Enable HMF */
+ pcr |= AF_MED_EN;
+ /* Set Median Threshold */
+ pcr |= conf->hmf.threshold << AF_MED_TH_SHIFT;
+ }
+ /* Set PCR Register */
+ isp_reg_clr_set(af->isp, OMAP3_ISP_IOMEM_H3A, ISPH3A_PCR,
+ AF_PCR_MASK, pcr);
+
+ af->update = 0;
+ af->config_counter += af->inc_config;
+ af->inc_config = 0;
+ af->buf_size = conf->buf_size;
+}
+
+static void h3a_af_enable(struct ispstat *af, int enable)
+{
+ if (enable) {
+ isp_reg_set(af->isp, OMAP3_ISP_IOMEM_H3A, ISPH3A_PCR,
+ ISPH3A_PCR_AF_EN);
+ omap3isp_subclk_enable(af->isp, OMAP3_ISP_SUBCLK_AF);
+ } else {
+ isp_reg_clr(af->isp, OMAP3_ISP_IOMEM_H3A, ISPH3A_PCR,
+ ISPH3A_PCR_AF_EN);
+ omap3isp_subclk_disable(af->isp, OMAP3_ISP_SUBCLK_AF);
+ }
+}
+
+static int h3a_af_busy(struct ispstat *af)
+{
+ return isp_reg_readl(af->isp, OMAP3_ISP_IOMEM_H3A, ISPH3A_PCR)
+ & ISPH3A_PCR_BUSYAF;
+}
+
+static u32 h3a_af_get_buf_size(struct omap3isp_h3a_af_config *conf)
+{
+ return conf->paxel.h_cnt * conf->paxel.v_cnt * OMAP3ISP_AF_PAXEL_SIZE;
+}
+
+/* Function to check paxel parameters */
+static int h3a_af_validate_params(struct ispstat *af, void *new_conf)
+{
+ struct omap3isp_h3a_af_config *user_cfg = new_conf;
+ struct omap3isp_h3a_af_paxel *paxel_cfg = &user_cfg->paxel;
+ struct omap3isp_h3a_af_iir *iir_cfg = &user_cfg->iir;
+ int index;
+ u32 buf_size;
+
+ /* Check horizontal Count */
+ if (IS_OUT_OF_BOUNDS(paxel_cfg->h_cnt,
+ OMAP3ISP_AF_PAXEL_HORIZONTAL_COUNT_MIN,
+ OMAP3ISP_AF_PAXEL_HORIZONTAL_COUNT_MAX))
+ return -EINVAL;
+
+ /* Check Vertical Count */
+ if (IS_OUT_OF_BOUNDS(paxel_cfg->v_cnt,
+ OMAP3ISP_AF_PAXEL_VERTICAL_COUNT_MIN,
+ OMAP3ISP_AF_PAXEL_VERTICAL_COUNT_MAX))
+ return -EINVAL;
+
+ if (IS_OUT_OF_BOUNDS(paxel_cfg->height, OMAP3ISP_AF_PAXEL_HEIGHT_MIN,
+ OMAP3ISP_AF_PAXEL_HEIGHT_MAX) ||
+ paxel_cfg->height % 2)
+ return -EINVAL;
+
+ /* Check width */
+ if (IS_OUT_OF_BOUNDS(paxel_cfg->width, OMAP3ISP_AF_PAXEL_WIDTH_MIN,
+ OMAP3ISP_AF_PAXEL_WIDTH_MAX) ||
+ paxel_cfg->width % 2)
+ return -EINVAL;
+
+ /* Check Line Increment */
+ if (IS_OUT_OF_BOUNDS(paxel_cfg->line_inc,
+ OMAP3ISP_AF_PAXEL_INCREMENT_MIN,
+ OMAP3ISP_AF_PAXEL_INCREMENT_MAX) ||
+ paxel_cfg->line_inc % 2)
+ return -EINVAL;
+
+ /* Check Horizontal Start */
+ if ((paxel_cfg->h_start < iir_cfg->h_start) ||
+ IS_OUT_OF_BOUNDS(paxel_cfg->h_start,
+ OMAP3ISP_AF_PAXEL_HZSTART_MIN,
+ OMAP3ISP_AF_PAXEL_HZSTART_MAX))
+ return -EINVAL;
+
+ /* Check IIR */
+ for (index = 0; index < OMAP3ISP_AF_NUM_COEF; index++) {
+ if ((iir_cfg->coeff_set0[index]) > OMAP3ISP_AF_COEF_MAX)
+ return -EINVAL;
+
+ if ((iir_cfg->coeff_set1[index]) > OMAP3ISP_AF_COEF_MAX)
+ return -EINVAL;
+ }
+
+ if (IS_OUT_OF_BOUNDS(iir_cfg->h_start, OMAP3ISP_AF_IIRSH_MIN,
+ OMAP3ISP_AF_IIRSH_MAX))
+ return -EINVAL;
+
+ /* Hack: If paxel size is 12, the 10th AF window may be corrupted */
+ if ((paxel_cfg->h_cnt * paxel_cfg->v_cnt > 9) &&
+ (paxel_cfg->width * paxel_cfg->height == 12))
+ return -EINVAL;
+
+ buf_size = h3a_af_get_buf_size(user_cfg);
+ if (buf_size > user_cfg->buf_size)
+ /* User buf_size request wasn't enough */
+ user_cfg->buf_size = buf_size;
+ else if (user_cfg->buf_size > OMAP3ISP_AF_MAX_BUF_SIZE)
+ user_cfg->buf_size = OMAP3ISP_AF_MAX_BUF_SIZE;
+
+ return 0;
+}
+
+/* Update local parameters */
+static void h3a_af_set_params(struct ispstat *af, void *new_conf)
+{
+ struct omap3isp_h3a_af_config *user_cfg = new_conf;
+ struct omap3isp_h3a_af_config *cur_cfg = af->priv;
+ int update = 0;
+ int index;
+
+ /* alaw */
+ if (cur_cfg->alaw_enable != user_cfg->alaw_enable) {
+ update = 1;
+ goto out;
+ }
+
+ /* hmf */
+ if (cur_cfg->hmf.enable != user_cfg->hmf.enable) {
+ update = 1;
+ goto out;
+ }
+ if (cur_cfg->hmf.threshold != user_cfg->hmf.threshold) {
+ update = 1;
+ goto out;
+ }
+
+ /* rgbpos */
+ if (cur_cfg->rgb_pos != user_cfg->rgb_pos) {
+ update = 1;
+ goto out;
+ }
+
+ /* iir */
+ if (cur_cfg->iir.h_start != user_cfg->iir.h_start) {
+ update = 1;
+ goto out;
+ }
+ for (index = 0; index < OMAP3ISP_AF_NUM_COEF; index++) {
+ if (cur_cfg->iir.coeff_set0[index] !=
+ user_cfg->iir.coeff_set0[index]) {
+ update = 1;
+ goto out;
+ }
+ if (cur_cfg->iir.coeff_set1[index] !=
+ user_cfg->iir.coeff_set1[index]) {
+ update = 1;
+ goto out;
+ }
+ }
+
+ /* paxel */
+ if ((cur_cfg->paxel.width != user_cfg->paxel.width) ||
+ (cur_cfg->paxel.height != user_cfg->paxel.height) ||
+ (cur_cfg->paxel.h_start != user_cfg->paxel.h_start) ||
+ (cur_cfg->paxel.v_start != user_cfg->paxel.v_start) ||
+ (cur_cfg->paxel.h_cnt != user_cfg->paxel.h_cnt) ||
+ (cur_cfg->paxel.v_cnt != user_cfg->paxel.v_cnt) ||
+ (cur_cfg->paxel.line_inc != user_cfg->paxel.line_inc)) {
+ update = 1;
+ goto out;
+ }
+
+ /* af_mode */
+ if (cur_cfg->fvmode != user_cfg->fvmode)
+ update = 1;
+
+out:
+ if (update || !af->configured) {
+ memcpy(cur_cfg, user_cfg, sizeof(*cur_cfg));
+ af->inc_config++;
+ af->update = 1;
+ /*
+ * User might be asked for a bigger buffer than necessary for
+ * this configuration. In order to return the right amount of
+ * data during buffer request, let's calculate the size here
+ * instead of stick with user_cfg->buf_size.
+ */
+ cur_cfg->buf_size = h3a_af_get_buf_size(cur_cfg);
+ }
+}
+
+static long h3a_af_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
+{
+ struct ispstat *stat = v4l2_get_subdevdata(sd);
+
+ switch (cmd) {
+ case VIDIOC_OMAP3ISP_AF_CFG:
+ return omap3isp_stat_config(stat, arg);
+ case VIDIOC_OMAP3ISP_STAT_REQ:
+ return omap3isp_stat_request_statistics(stat, arg);
+ case VIDIOC_OMAP3ISP_STAT_EN: {
+ int *en = arg;
+ return omap3isp_stat_enable(stat, !!*en);
+ }
+ }
+
+ return -ENOIOCTLCMD;
+
+}
+
+static const struct ispstat_ops h3a_af_ops = {
+ .validate_params = h3a_af_validate_params,
+ .set_params = h3a_af_set_params,
+ .setup_regs = h3a_af_setup_regs,
+ .enable = h3a_af_enable,
+ .busy = h3a_af_busy,
+};
+
+static const struct v4l2_subdev_core_ops h3a_af_subdev_core_ops = {
+ .ioctl = h3a_af_ioctl,
+ .subscribe_event = omap3isp_stat_subscribe_event,
+ .unsubscribe_event = omap3isp_stat_unsubscribe_event,
+};
+
+static const struct v4l2_subdev_video_ops h3a_af_subdev_video_ops = {
+ .s_stream = omap3isp_stat_s_stream,
+};
+
+static const struct v4l2_subdev_ops h3a_af_subdev_ops = {
+ .core = &h3a_af_subdev_core_ops,
+ .video = &h3a_af_subdev_video_ops,
+};
+
+/* Function to register the AF character device driver. */
+int omap3isp_h3a_af_init(struct isp_device *isp)
+{
+ struct ispstat *af = &isp->isp_af;
+ struct omap3isp_h3a_af_config *af_cfg;
+ struct omap3isp_h3a_af_config *af_recover_cfg;
+
+ af_cfg = devm_kzalloc(isp->dev, sizeof(*af_cfg), GFP_KERNEL);
+ if (af_cfg == NULL)
+ return -ENOMEM;
+
+ af->ops = &h3a_af_ops;
+ af->priv = af_cfg;
+ af->event_type = V4L2_EVENT_OMAP3ISP_AF;
+ af->isp = isp;
+
+ /* Set recover state configuration */
+ af_recover_cfg = devm_kzalloc(isp->dev, sizeof(*af_recover_cfg),
+ GFP_KERNEL);
+ if (!af_recover_cfg) {
+ dev_err(af->isp->dev, "AF: cannot allocate memory for recover "
+ "configuration.\n");
+ return -ENOMEM;
+ }
+
+ af_recover_cfg->paxel.h_start = OMAP3ISP_AF_PAXEL_HZSTART_MIN;
+ af_recover_cfg->paxel.width = OMAP3ISP_AF_PAXEL_WIDTH_MIN;
+ af_recover_cfg->paxel.height = OMAP3ISP_AF_PAXEL_HEIGHT_MIN;
+ af_recover_cfg->paxel.h_cnt = OMAP3ISP_AF_PAXEL_HORIZONTAL_COUNT_MIN;
+ af_recover_cfg->paxel.v_cnt = OMAP3ISP_AF_PAXEL_VERTICAL_COUNT_MIN;
+ af_recover_cfg->paxel.line_inc = OMAP3ISP_AF_PAXEL_INCREMENT_MIN;
+ if (h3a_af_validate_params(af, af_recover_cfg)) {
+ dev_err(af->isp->dev, "AF: recover configuration is "
+ "invalid.\n");
+ return -EINVAL;
+ }
+
+ af_recover_cfg->buf_size = h3a_af_get_buf_size(af_recover_cfg);
+ af->recover_priv = af_recover_cfg;
+
+ return omap3isp_stat_init(af, "AF", &h3a_af_subdev_ops);
+}
+
+void omap3isp_h3a_af_cleanup(struct isp_device *isp)
+{
+ omap3isp_stat_cleanup(&isp->isp_af);
+}
Code Review / kvmfornfv.git / blobdiff